diff --git a/testbed/CMakeLists.txt b/testbed/CMakeLists.txt index 9a488e1a..dd6faefc 100644 --- a/testbed/CMakeLists.txt +++ b/testbed/CMakeLists.txt @@ -20,7 +20,7 @@ FILE(COPY "shaders/" DESTINATION "${EXECUTABLE_OUTPUT_PATH}/shaders/") FILE(COPY "meshes/" DESTINATION "${EXECUTABLE_OUTPUT_PATH}/meshes/") # Headers -INCLUDE_DIRECTORIES("src/" "opengl-framework/src/" "glfw/include/" "common/" "scenes/") +INCLUDE_DIRECTORIES("src/" "opengl-framework/src/" "glfw/include/" "common/" "scenes/" "imgui/") # Testbed source files SET(TESTBED_SOURCES @@ -35,6 +35,16 @@ SET(TESTBED_SOURCES src/Timer.cpp ) +# IMGUI source files +SET(IMGUI_SOURCES + imgui/imgui.h + imgui/imgui.cpp + imgui/imconfig.h + imgui/stb_rect_pack.h + imgui/stb_textedit.h + imgui/stb_truetype.h +) + # Common source files SET(COMMON_SOURCES common/Box.h @@ -70,7 +80,7 @@ SET(SCENES_SOURCES ) # Create the executable -ADD_EXECUTABLE(testbed ${TESTBED_SOURCES} ${SCENES_SOURCES} ${COMMON_SOURCES}) +ADD_EXECUTABLE(testbed ${TESTBED_SOURCES} ${SCENES_SOURCES} ${COMMON_SOURCES} ${IMGUI_SOURCES}) # Link with libraries TARGET_LINK_LIBRARIES(testbed reactphysics3d openglframework glfw ${GLFW_LIBRARIES}) diff --git a/testbed/imgui/LICENSE b/testbed/imgui/LICENSE new file mode 100644 index 00000000..b28ef225 --- /dev/null +++ b/testbed/imgui/LICENSE @@ -0,0 +1,21 @@ +The MIT License (MIT) + +Copyright (c) 2014-2015 Omar Cornut and ImGui contributors + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. diff --git a/testbed/imgui/imconfig.h b/testbed/imgui/imconfig.h new file mode 100644 index 00000000..24d61148 --- /dev/null +++ b/testbed/imgui/imconfig.h @@ -0,0 +1,58 @@ +//----------------------------------------------------------------------------- +// USER IMPLEMENTATION +// This file contains compile-time options for ImGui. +// Other options (memory allocation overrides, callbacks, etc.) can be set at runtime via the ImGuiIO structure - ImGui::GetIO(). +//----------------------------------------------------------------------------- + +#pragma once + +//---- Define your own ImVector<> type if you don't want to use the provided implementation defined in imgui.h +//#include +//#define ImVector std::vector +//#define ImVector MyVector + +//---- Define assertion handler. Defaults to calling assert(). +//#define IM_ASSERT(_EXPR) MyAssert(_EXPR) + +//---- Define attributes of all API symbols declarations, e.g. for DLL under Windows. +//#define IMGUI_API __declspec( dllexport ) +//#define IMGUI_API __declspec( dllimport ) + +//---- Include imgui_user.inl at the end of imgui.cpp so you can include code that extends ImGui using its private data/functions. +//#define IMGUI_INCLUDE_IMGUI_USER_INL + +//---- Include imgui_user.h at the end of imgui.h +//#define IMGUI_INCLUDE_IMGUI_USER_H + +//---- Don't implement default handlers for Windows (so as not to link with OpenClipboard() and others Win32 functions) +//#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS +//#define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS + +//---- Don't implement help and test window functionality (ShowUserGuide()/ShowStyleEditor()/ShowTestWindow() methods will be empty) +//#define IMGUI_DISABLE_TEST_WINDOWS + +//---- Implement STB libraries in a namespace to avoid conflicts +//#define IMGUI_STB_NAMESPACE ImStb + +//---- Define constructor and implicit cast operators to convert back<>forth from your math types and ImVec2/ImVec4. +/* +#define IM_VEC2_CLASS_EXTRA \ + ImVec2(const MyVec2& f) { x = f.x; y = f.y; } \ + operator MyVec2() const { return MyVec2(x,y); } + +#define IM_VEC4_CLASS_EXTRA \ + ImVec4(const MyVec4& f) { x = f.x; y = f.y; z = f.z; w = f.w; } \ + operator MyVec4() const { return MyVec4(x,y,z,w); } +*/ + +//---- Freely implement extra functions within the ImGui:: namespace. +//---- Declare helpers or widgets implemented in imgui_user.inl or elsewhere, so end-user doesn't need to include multiple files. +//---- e.g. you can create variants of the ImGui::Value() helper for your low-level math types, or your own widgets/helpers. +/* +namespace ImGui +{ + void Value(const char* prefix, const MyVec2& v, const char* float_format = NULL); + void Value(const char* prefix, const MyVec4& v, const char* float_format = NULL); +} +*/ + diff --git a/testbed/imgui/imgui.cpp b/testbed/imgui/imgui.cpp new file mode 100644 index 00000000..a0f0fe4a --- /dev/null +++ b/testbed/imgui/imgui.cpp @@ -0,0 +1,11499 @@ +// ImGui library v1.39 WIP +// See ImGui::ShowTestWindow() for sample code. +// Read 'Programmer guide' below for notes on how to setup ImGui in your codebase. +// Get latest version at https://github.com/ocornut/imgui +// Developed by Omar Cornut and ImGui contributors. + +/* + + Index + - MISSION STATEMENT + - END-USER GUIDE + - PROGRAMMER GUIDE (read me!) + - API BREAKING CHANGES (read me when you update!) + - FREQUENTLY ASKED QUESTIONS (FAQ), TIPS + - Can I have multiple widgets with the same label? (Yes) + - How do I update to a newer version of ImGui? + - Why is my text output blurry? + - How can I load a different font than the default? + - How can I load multiple fonts? + - How can I display and input Chinese, Japanese, Korean characters? + - ISSUES & TODO-LIST + - CODE + - SAMPLE CODE + - FONT DATA + + + MISSION STATEMENT + ================= + + - easy to use to create code-driven and data-driven tools + - easy to use to create ad hoc short-lived tools and long-lived, more elaborate tools + - easy to hack and improve + - minimize screen real-estate usage + - minimize setup and maintenance + - minimize state storage on user side + - portable, minimize dependencies, run on target (consoles, phones, etc.) + - efficient runtime (NB- we do allocate when "growing" content - creating a window / opening a tree node for the first time, etc. - but a typical frame won't allocate anything) + - read about immediate-mode gui principles @ http://mollyrocket.com/861, http://mollyrocket.com/forums/index.html + + Designed for developers and content-creators, not the typical end-user! Some of the weaknesses includes: + - doesn't look fancy, doesn't animate + - limited layout features, intricate layouts are typically crafted in code + - occasionally uses statically sized buffers for string manipulations - won't crash, but some very long pieces of text may be clipped. functions like ImGui::TextUnformatted() don't have such restriction. + + + END-USER GUIDE + ============== + + - double-click title bar to collapse window + - click upper right corner to close a window, available when 'bool* p_opened' is passed to ImGui::Begin() + - click and drag on lower right corner to resize window + - click and drag on any empty space to move window + - double-click/double-tap on lower right corner grip to auto-fit to content + - TAB/SHIFT+TAB to cycle through keyboard editable fields + - use mouse wheel to scroll + - use CTRL+mouse wheel to zoom window contents (if IO.FontAllowScaling is true) + - CTRL+Click on a slider to input value as text + - text editor: + - Hold SHIFT or use mouse to select text. + - CTRL+Left/Right to word jump + - CTRL+Shift+Left/Right to select words + - CTRL+A our Double-Click to select all + - CTRL+X,CTRL+C,CTRL+V to use OS clipboard + - CTRL+Z,CTRL+Y to undo/redo + - ESCAPE to revert text to its original value + - You can apply arithmetic operators +,*,/ on numerical values. Use +- to subtract (because - would set a negative value!) + + + PROGRAMMER GUIDE + ================ + + - read the FAQ below this section! + - your code creates the UI, if your code doesn't run the UI is gone! == very dynamic UI, no construction/destructions steps, less data retention on your side, no state duplication, less sync, less bugs. + - call and read ImGui::ShowTestWindow() for sample code demonstrating most features. + - see examples/ folder for standalone sample applications. e.g. examples/opengl_example/ + - customization: PushStyleColor()/PushStyleVar() or the style editor to tweak the look of the interface (e.g. if you want a more compact UI or a different color scheme). + + - getting started: + - initialisation: call ImGui::GetIO() to retrieve the ImGuiIO structure and fill the 'Settings' data. + - every frame: + 1/ in your mainloop or right after you got your keyboard/mouse info, call ImGui::GetIO() and fill the 'Input' data, then call ImGui::NewFrame(). + 2/ use any ImGui function you want between NewFrame() and Render() + 3/ ImGui::Render() to render all the accumulated command-lists. it will call your RenderDrawListFn handler that you set in the IO structure. + - all rendering information are stored into command-lists until ImGui::Render() is called. + - ImGui never touches or know about your GPU state. the only function that knows about GPU is the RenderDrawListFn handler that you must provide. + - effectively it means you can create widgets at any time in your code, regardless of "update" vs "render" considerations. + - refer to the examples applications in the examples/ folder for instruction on how to setup your code. + - a typical application skeleton may be: + + // Application init + ImGuiIO& io = ImGui::GetIO(); + io.DisplaySize.x = 1920.0f; + io.DisplaySize.y = 1280.0f; + io.DeltaTime = 1.0f/60.0f; + io.IniFilename = "imgui.ini"; + // TODO: Fill others settings of the io structure + + // Load texture + unsigned char* pixels; + int width, height, bytes_per_pixels; + io.Fonts->GetTexDataAsRGBA32(pixels, &width, &height, &bytes_per_pixels); + // TODO: copy texture to graphics memory. + // TODO: store your texture pointer/identifier in 'io.Fonts->TexID' + + // Application main loop + while (true) + { + // 1) get low-level input + // e.g. on Win32, GetKeyboardState(), or poll your events, etc. + + // 2) TODO: fill all fields of IO structure and call NewFrame + ImGuiIO& io = ImGui::GetIO(); + io.MousePos = mouse_pos; + io.MouseDown[0] = mouse_button_0; + io.KeysDown[i] = ... + ImGui::NewFrame(); + + // 3) most of your application code here - you can use any of ImGui::* functions at any point in the frame + ImGui::Begin("My window"); + ImGui::Text("Hello, world."); + ImGui::End(); + GameUpdate(); + GameRender(); + + // 4) render & swap video buffers + ImGui::Render(); + // swap video buffer, etc. + } + + - after calling ImGui::NewFrame() you can read back 'io.WantCaptureMouse' and 'io.WantCaptureKeyboard' to tell if ImGui + wants to use your inputs. if it does you can discard/hide the inputs from the rest of your application. + + API BREAKING CHANGES + ==================== + + Occasionally introducing changes that are breaking the API. The breakage are generally minor and easy to fix. + Here is a change-log of API breaking changes, if you are using one of the functions listed, expect to have to fix some code. + + - 2015/04/13 (1.38) - renamed IsClipped() to IsRectClipped(). Kept inline redirection function (will obsolete). + - 2015/04/09 (1.38) - renamed ImDrawList::AddArc() to ImDrawList::AddArcFast() for compatibility with future API + - 2015/04/03 (1.38) - removed ImGuiCol_CheckHovered, ImGuiCol_CheckActive, replaced with the more general ImGuiCol_FrameBgHovered, ImGuiCol_FrameBgActive. + - 2014/04/03 (1.38) - removed support for passing -FLT_MAX..+FLT_MAX as the range for a SliderFloat(). Use DragFloat() or Inputfloat() instead. + - 2015/03/17 (1.36) - renamed GetItemRectMin()/GetItemRectMax()/IsMouseHoveringBox() to GetItemRectMin()/GetItemRectMax()/IsMouseHoveringRect(). Kept inline redirection function (will obsolete). + - 2015/03/15 (1.36) - renamed style.TreeNodeSpacing to style.IndentSpacing, ImGuiStyleVar_TreeNodeSpacing to ImGuiStyleVar_IndentSpacing + - 2015/03/13 (1.36) - renamed GetWindowIsFocused() to IsWindowFocused(). Kept inline redirection function (will obsolete). + - 2015/03/08 (1.35) - renamed style.ScrollBarWidth to style.ScrollbarWidth + - 2015/02/27 (1.34) - renamed OpenNextNode(bool) to SetNextTreeNodeOpened(bool, ImGuiSetCond). Kept inline redirection function (will obsolete). + - 2015/02/27 (1.34) - renamed ImGuiSetCondition_*** to ImGuiSetCond_***, and _FirstUseThisSession becomes _Once. + - 2015/02/11 (1.32) - changed text input callback ImGuiTextEditCallback return type from void-->int. reserved for future use, return 0 for now. + - 2015/02/10 (1.32) - renamed GetItemWidth() to CalcItemWidth() to clarify its evolving behavior + - 2015/02/08 (1.31) - renamed GetTextLineSpacing() to GetTextLineHeightWithSpacing() + - 2015/02/01 (1.31) - removed IO.MemReallocFn (unused) + - 2015/01/19 (1.30) - renamed ImGuiStorage::GetIntPtr()/GetFloatPtr() to GetIntRef()/GetIntRef() because Ptr was conflicting with actual pointer storage functions. + - 2015/01/11 (1.30) - big font/image API change! now loads TTF file. allow for multiple fonts. no need for a PNG loader. + (1.30) - removed GetDefaultFontData(). uses io.Fonts->GetTextureData*() API to retrieve uncompressed pixels. + this sequence: + const void* png_data; + unsigned int png_size; + ImGui::GetDefaultFontData(NULL, NULL, &png_data, &png_size); + // + became: + unsigned char* pixels; + int width, height; + io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); + // + io.Fonts->TexID = (your_texture_identifier); + you now have much more flexibility to load multiple TTF fonts and manage the texture buffer for internal needs. + it is now recommended your sample the font texture with bilinear interpolation. + (1.30) - added texture identifier in ImDrawCmd passed to your render function (we can now render images). make sure to set io.Fonts->TexID. + (1.30) - removed IO.PixelCenterOffset (unnecessary, can be handled in user projection matrix) + (1.30) - removed ImGui::IsItemFocused() in favor of ImGui::IsItemActive() which handles all widgets + - 2014/12/10 (1.18) - removed SetNewWindowDefaultPos() in favor of new generic API SetNextWindowPos(pos, ImGuiSetCondition_FirstUseEver) + - 2014/11/28 (1.17) - moved IO.Font*** options to inside the IO.Font-> structure (FontYOffset, FontTexUvForWhite, FontBaseScale, FontFallbackGlyph) + - 2014/11/26 (1.17) - reworked syntax of IMGUI_ONCE_UPON_A_FRAME helper macro to increase compiler compatibility + - 2014/11/07 (1.15) - renamed IsHovered() to IsItemHovered() + - 2014/10/02 (1.14) - renamed IMGUI_INCLUDE_IMGUI_USER_CPP to IMGUI_INCLUDE_IMGUI_USER_INL and imgui_user.cpp to imgui_user.inl (more IDE friendly) + - 2014/09/25 (1.13) - removed 'text_end' parameter from IO.SetClipboardTextFn (the string is now always zero-terminated for simplicity) + - 2014/09/24 (1.12) - renamed SetFontScale() to SetWindowFontScale() + - 2014/09/24 (1.12) - moved IM_MALLOC/IM_REALLOC/IM_FREE preprocessor defines to IO.MemAllocFn/IO.MemReallocFn/IO.MemFreeFn + - 2014/08/30 (1.09) - removed IO.FontHeight (now computed automatically) + - 2014/08/30 (1.09) - moved IMGUI_FONT_TEX_UV_FOR_WHITE preprocessor define to IO.FontTexUvForWhite + - 2014/08/28 (1.09) - changed the behavior of IO.PixelCenterOffset following various rendering fixes + + + FREQUENTLY ASKED QUESTIONS (FAQ), TIPS + ====================================== + + Q: Can I have multiple widgets with the same label? + A: Yes. A primer on the use of labels/IDs in ImGui.. + + - Interactive widgets require state to be carried over multiple frames (most typically ImGui often needs to remember what is the "active" widget). + to do so they need an unique ID. unique ID are typically derived from a string label, an integer index or a pointer. + + Button("OK"); // Label = "OK", ID = hash of "OK" + Button("Cancel"); // Label = "Cancel", ID = hash of "Cancel" + + - Elements that are not clickable, such as Text() items don't need an ID. + + - ID are uniquely scoped within windows, tree nodes, etc. so no conflict can happen if you have two buttons called "OK" in two different windows + or in two different locations of a tree. + + - if you have a same ID twice in the same location, you'll have a conflict: + + Button("OK"); + Button("OK"); // ID collision! Both buttons will be treated as the same. + + Fear not! this is easy to solve and there are many ways to solve it! + + - when passing a label you can optionally specify extra unique ID information within string itself. This helps solving the simpler collision cases. + use "##" to pass a complement to the ID that won't be visible to the end-user: + + Button("Play##0"); // Label = "Play", ID = hash of "Play##0" + Button("Play##1"); // Label = "Play", ID = hash of "Play##1" (different from above) + + - occasionally (rarely) you might want change a label while preserving a constant ID. This allows you to animate labels. + use "###" to pass a label that isn't part of ID: + + Button("Hello###ID"; // Label = "Hello", ID = hash of "ID" + Button("World###ID"; // Label = "World", ID = hash of "ID" (same as above) + + - use PushID() / PopID() to create scopes and avoid ID conflicts within the same Window. + this is the most convenient way of distinguish ID if you are iterating and creating many UI elements. + you can push a pointer, a string or an integer value. remember that ID are formed from the addition of everything in the ID stack! + + for (int i = 0; i < 100; i++) + { + PushID(i); + Button("Click"); // Label = "Click", ID = hash of integer + "label" (unique) + PopID(); + } + + for (int i = 0; i < 100; i++) + { + MyObject* obj = Objects[i]; + PushID(obj); + Button("Click"); // Label = "Click", ID = hash of pointer + "label" (unique) + PopID(); + } + + for (int i = 0; i < 100; i++) + { + MyObject* obj = Objects[i]; + PushID(obj->Name); + Button("Click"); // Label = "Click", ID = hash of string + "label" (unique) + PopID(); + } + + - more example showing that you can stack multiple prefixes into the ID stack: + + Button("Click"); // Label = "Click", ID = hash of "Click" + PushID("node"); + Button("Click"); // Label = "Click", ID = hash of "node" + "Click" + PushID(my_ptr); + Button("Click"); // Label = "Click", ID = hash of "node" + ptr + "Click" + PopID(); + PopID(); + + - tree nodes implicitly creates a scope for you by calling PushID(). + + Button("Click"); // Label = "Click", ID = hash of "Click" + if (TreeNode("node")) + { + Button("Click"); // Label = "Click", ID = hash of "node" + "Click" + TreePop(); + } + + - when working with trees, ID are used to preserve the opened/closed state of each tree node. + depending on your use cases you may want to use strings, indices or pointers as ID. + e.g. when displaying a single object that may change over time (1-1 relationship), using a static string as ID will preserve your node open/closed state when the targeted object change. + e.g. when displaying a list of objects, using indices or pointers as ID will preserve the node open/closed state differently. experiment and see what makes more sense! + + Q: How do I update to a newer version of ImGui? + A: Overwrite the following files: + imgui.cpp + imgui.h + stb_rect_pack.h + stb_textedit.h + stb_truetype.h + Check the "API BREAKING CHANGES" sections for a list of occasional API breaking changes. + + Q: Why is my text output blurry? + A: In your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f) + + Q: How can I load a different font than the default? (default is an embedded version of ProggyClean.ttf, rendered at size 13) + A: Use the font atlas to load the TTF file you want: + + io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels); + io.Fonts->GetTexDataAsRGBA32() or GetTexDataAsAlpha8() + + Q: How can I load multiple fonts? + A: Use the font atlas to pack them into a single texture: + + ImFont* font0 = io.Fonts->AddFontDefault(); + ImFont* font1 = io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels); + ImFont* font2 = io.Fonts->AddFontFromFileTTF("myfontfile2.ttf", size_in_pixels); + io.Fonts->GetTexDataAsRGBA32() or GetTexDataAsAlpha8() + // the first loaded font gets used by default + // use ImGui::PushFont()/ImGui::PopFont() to change the font at runtime + + Q: How can I render and input Chinese, Japanese, Korean characters? + A: When loading a font, pass custom Unicode ranges to specify the glyphs to load. ImGui will support UTF-8 encoding across the board. + Character input depends on you passing the right character code to io.AddInputCharacter(). The example applications do that. + + io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels, io.Fonts->GetGlyphRangesJapanese()); // Load Japanese characters + io.Fonts->GetTexDataAsRGBA32() or GetTexDataAsAlpha8() + io.ImeWindowHandle = MY_HWND; // To input using Microsoft IME, give ImGui the hwnd of your application + + - tip: the construct 'IMGUI_ONCE_UPON_A_FRAME { ... }' will run the block of code only once a frame. You can use it to quickly add custom UI in the middle of a deep nested inner loop in your code. + - tip: you can create widgets without a Begin()/End() block, they will go in an implicit window called "Debug" + - tip: you can call Begin() multiple times with the same name during the same frame, it will keep appending to the same window. + - tip: you can call Render() multiple times (e.g for VR renders). + - tip: call and read the ShowTestWindow() code for more example of how to use ImGui! + + + ISSUES & TODO-LIST + ================== + + - misc: merge or clarify ImVec4 vs ImRect? + - window: add horizontal scroll + - window: fix resize grip rendering scaling along with Rounding style setting + - window: autofit feedback loop when user relies on any dynamic layout (window width multiplier, column). maybe just clearly drop manual autofit? + - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. + - window: allow resizing of child windows (possibly given min/max for each axis?) + - window: background options for child windows, border option (disable rounding) + - window: resizing from any sides? + mouse cursor directives for app. + - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. + - widgets: clean up widgets internal toward exposing everything. + - main: considering adding EndFrame()/Init(). some constructs are awkward in the implementation because of the lack of them. + - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes + - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode? +!- input number: large int not reliably supported because of int<>float conversions. + - input number: optional range min/max for Input*() functions + - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled) + - input number: use mouse wheel to step up/down + - input number: non-decimal input. + - text: proper alignment options + - layout: horizontal layout helper (github issue #97) + - layout: more generic alignment state (left/right/centered) for single items? + - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding. + - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (github issue #125) + - columns: declare column set (each column: fixed size, %, fill, distribute default size among fills) (github issue #125) + - columns: columns header to act as button (~sort op) and allow resize/reorder (github issue #125) + - columns: user specify columns size (github issue #125) + - popup: border options. richer api like BeginChild() perhaps? (github issue #197) + - combo: turn child handling code into pop up helper + - combo: contents should extends to fit label if combo widget is small + - listbox: multiple selection + - listbox: user may want to initial scroll to focus on the one selected value? + ! menubar, menus (github issue #126) + - tabs + - gauge: various forms of gauge/loading bars widgets + - color: better color editor. + - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots) + - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value) + - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID) + - file selection widget -> build the tool in our codebase to improve model-dialog idioms + - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt() + - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). + - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate. + - text edit: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now. + - text edit: centered text for slider as input text so it matches typical positioning. + - text edit: flag to disable live update of the user buffer. + - text edit: field resize behavior - field could stretch when being edited? hover tooltip shows more text? + - text edit: add multi-line text edit + - tree: add treenode/treepush int variants? because (void*) cast from int warns on some platforms/settings + - settings: write more decent code to allow saving/loading new fields + - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file + ! style: store rounded corners in texture to use 1 quad per corner (filled and wireframe). so rounding have minor cost. + - style: checkbox: padding for "active" color should be a multiplier of the + - style: colorbox not always square? + - text: simple markup language for color change? + - log: LogButtons() options for specifying depth and/or hiding depth slider + - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope) + - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard) + - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs. + - filters: set a current filter that tree node can automatically query to hide themselves + - filters: handle wildcards (with implicit leading/trailing *), regexps + - shortcuts: add a shortcut api, e.g. parse "&Save" and/or "Save (CTRL+S)", pass in to widgets or provide simple ways to use (button=activate, input=focus) + ! keyboard: tooltip & combo boxes are messing up / not honoring keyboard tabbing + - keyboard: full keyboard navigation and focus. + - input: rework IO to be able to pass actual events to fix temporal aliasing issues. + - input: support track pad style scrolling & slider edit. + - tooltip: move to fit within screen (e.g. when mouse cursor is right of the screen). + - portability: big-endian test/support (github issue #81) + - misc: mark printf compiler attributes on relevant functions + - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL) + - misc: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon? + - style editor: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? + - style editor: color child window height expressed in multiple of line height. + - optimization/render: use indexed rendering to reduce vertex data cost (e.g. for remote/networked imgui) + - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)? + - optimization: turn some the various stack vectors into statically-sized arrays + - optimization: better clipping for multi-component widgets +*/ + +#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS) +#define _CRT_SECURE_NO_WARNINGS +#endif + +#include "imgui.h" +#include // toupper, isprint +#include // sqrtf, fabsf, fmodf, powf, cosf, sinf, floorf, ceilf +#include // intptr_t +#include // vsnprintf, sscanf +#include // new (ptr) + +#ifdef _MSC_VER +#pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff) +#pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen +#endif + +// Clang warnings with -Weverything +#ifdef __clang__ +#pragma clang diagnostic ignored "-Wold-style-cast" // warning : use of old-style cast // yes, they are more terse. +#pragma clang diagnostic ignored "-Wfloat-equal" // warning : comparing floating point with == or != is unsafe // storing and comparing against same constants ok. +#pragma clang diagnostic ignored "-Wformat-nonliteral" // warning : format string is not a string literal // passing non-literal to vsnformat(). yes, user passing incorrect format strings can crash the code. +#pragma clang diagnostic ignored "-Wexit-time-destructors" // warning : declaration requires an exit-time destructor // exit-time destruction order is undefined. if MemFree() leads to users code that has been disabled before exit it might cause problems. ImGui coding style welcomes static/globals. +#pragma clang diagnostic ignored "-Wglobal-constructors" // warning : declaration requires a global destructor // similar to above, not sure what the exact difference it. +#pragma clang diagnostic ignored "-Wsign-conversion" // warning : implicit conversion changes signedness // +#pragma clang diagnostic ignored "-Wmissing-noreturn" // warning : function xx could be declared with attribute 'noreturn' warning // GetDefaultFontData() asserts which some implementation makes it never return. +#endif +#ifdef __GNUC__ +#pragma GCC diagnostic ignored "-Wunused-function" // warning: 'xxxx' defined but not used +#endif + +//------------------------------------------------------------------------- +// STB libraries implementation +//------------------------------------------------------------------------- + +struct ImGuiTextEditState; + +//#define IMGUI_STB_NAMESPACE ImStb +//#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION +//#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION + +#ifdef IMGUI_STB_NAMESPACE +namespace IMGUI_STB_NAMESPACE +{ +#endif + +#ifdef __clang__ +#pragma clang diagnostic push +#pragma clang diagnostic ignored "-Wunused-function" +#pragma clang diagnostic ignored "-Wmissing-prototypes" +#endif + +#define STBRP_ASSERT(x) IM_ASSERT(x) +#ifndef IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION +#define STBRP_STATIC +#define STB_RECT_PACK_IMPLEMENTATION +#endif +#include "stb_rect_pack.h" + +#define STBTT_malloc(x,u) ((void)(u), ImGui::MemAlloc(x)) +#define STBTT_free(x,u) ((void)(u), ImGui::MemFree(x)) +#define STBTT_assert(x) IM_ASSERT(x) +#ifndef IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION +#define STBTT_STATIC +#define STB_TRUETYPE_IMPLEMENTATION +#endif +#include "stb_truetype.h" + +#undef STB_TEXTEDIT_STRING +#undef STB_TEXTEDIT_CHARTYPE +#define STB_TEXTEDIT_STRING ImGuiTextEditState +#define STB_TEXTEDIT_CHARTYPE ImWchar +#include "stb_textedit.h" + +#ifdef __clang__ +#pragma clang diagnostic pop +#endif + +#ifdef IMGUI_STB_NAMESPACE +} // namespace ImStb +using namespace IMGUI_STB_NAMESPACE; +#endif + +//------------------------------------------------------------------------- +// Forward Declarations +//------------------------------------------------------------------------- + +struct ImRect; +struct ImGuiColMod; +struct ImGuiStyleMod; +struct ImGuiDrawContext; +struct ImGuiTextEditState; +struct ImGuiIniData; +struct ImGuiState; +struct ImGuiWindow; + +static bool ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool* out_held, bool allow_key_modifiers, bool repeat = false, bool pressed_on_click = false); +static void LogText(const ImVec2& ref_pos, const char* text, const char* text_end = NULL); + +static void RenderText(ImVec2 pos, const char* text, const char* text_end = NULL, bool hide_text_after_hash = true); +static void RenderTextWrapped(ImVec2 pos, const char* text, const char* text_end, float wrap_width); +static void RenderTextClipped(ImVec2 pos, const char* text, const char* text_end, const ImVec2* text_size_if_known, const ImVec2& clip_max); +static void RenderFrame(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, bool border = true, float rounding = 0.0f); +static void RenderCollapseTriangle(ImVec2 p_min, bool opened, float scale = 1.0f, bool shadow = false); + +static void SetFont(ImFont* font); +static bool ItemAdd(const ImRect& bb, const ImGuiID* id); +static void ItemSize(ImVec2 size, float text_offset_y = 0.0f); +static void ItemSize(const ImRect& bb, float text_offset_y = 0.0f); +static void PushColumnClipRect(int column_index = -1); +static bool IsClippedEx(const ImRect& bb, const ImGuiID* id, bool clip_even_when_logged); + +static bool IsMouseHoveringRect(const ImRect& bb); +static bool IsKeyPressedMap(ImGuiKey key, bool repeat = true); + +static void Scrollbar(ImGuiWindow* window); +static bool CloseWindowButton(bool* p_opened = NULL); +static void FocusWindow(ImGuiWindow* window); +static ImGuiWindow* FindHoveredWindow(ImVec2 pos, bool excluding_childs); + +// Helpers: String +static int ImStricmp(const char* str1, const char* str2); +static int ImStrnicmp(const char* str1, const char* str2, int count); +static char* ImStrdup(const char *str); +static size_t ImStrlenW(const ImWchar* str); +static const char* ImStristr(const char* haystack, const char* needle, const char* needle_end); +static size_t ImFormatString(char* buf, size_t buf_size, const char* fmt, ...); +static size_t ImFormatStringV(char* buf, size_t buf_size, const char* fmt, va_list args); + +// Helpers: Misc +static ImU32 ImHash(const void* data, size_t data_size, ImU32 seed); +static bool ImLoadFileToMemory(const char* filename, const char* file_open_mode, void** out_file_data, size_t* out_file_size, size_t padding_bytes = 0); +static inline int ImUpperPowerOfTwo(int v) { v--; v |= v >> 1; v |= v >> 2; v |= v >> 4; v |= v >> 8; v |= v >> 16; v++; return v; } +static inline bool ImCharIsSpace(int c) { return c == ' ' || c == '\t' || c == 0x3000; } + +// Helpers: UTF-8 <> wchar +static int ImTextCharToUtf8(char* buf, size_t buf_size, unsigned int in_char); // return output UTF-8 bytes count +static ptrdiff_t ImTextStrToUtf8(char* buf, size_t buf_size, const ImWchar* in_text, const ImWchar* in_text_end); // return output UTF-8 bytes count +static int ImTextCharFromUtf8(unsigned int* out_char, const char* in_text, const char* in_text_end); // return input UTF-8 bytes count +static ptrdiff_t ImTextStrFromUtf8(ImWchar* buf, size_t buf_size, const char* in_text, const char* in_text_end, const char** in_remaining = NULL); // return input UTF-8 bytes count +static int ImTextCountCharsFromUtf8(const char* in_text, const char* in_text_end); // return number of UTF-8 code-points (NOT bytes count) +static int ImTextCountUtf8BytesFromStr(const ImWchar* in_text, const ImWchar* in_text_end); // return number of bytes to express string as UTF-8 code-points + +//----------------------------------------------------------------------------- +// Platform dependent default implementations +//----------------------------------------------------------------------------- + +static const char* GetClipboardTextFn_DefaultImpl(); +static void SetClipboardTextFn_DefaultImpl(const char* text); +static void ImeSetInputScreenPosFn_DefaultImpl(int x, int y); + +//----------------------------------------------------------------------------- +// User facing structures +//----------------------------------------------------------------------------- + +ImGuiStyle::ImGuiStyle() +{ + Alpha = 1.0f; // Global alpha applies to everything in ImGui + WindowPadding = ImVec2(8,8); // Padding within a window + WindowMinSize = ImVec2(32,32); // Minimum window size + WindowRounding = 9.0f; // Radius of window corners rounding. Set to 0.0f to have rectangular windows + ChildWindowRounding = 0.0f; // Radius of child window corners rounding. Set to 0.0f to have rectangular windows + FramePadding = ImVec2(4,3); // Padding within a framed rectangle (used by most widgets) + FrameRounding = 0.0f; // Radius of frame corners rounding. Set to 0.0f to have rectangular frames (used by most widgets). + ItemSpacing = ImVec2(8,4); // Horizontal and vertical spacing between widgets/lines + ItemInnerSpacing = ImVec2(4,4); // Horizontal and vertical spacing between within elements of a composed widget (e.g. a slider and its label) + TouchExtraPadding = ImVec2(0,0); // Expand reactive bounding box for touch-based system where touch position is not accurate enough. Unfortunately we don't sort widgets so priority on overlap will always be given to the first widget. So don't grow this too much! + AutoFitPadding = ImVec2(8,8); // Extra space after auto-fit (double-clicking on resize grip) + WindowFillAlphaDefault = 0.70f; // Default alpha of window background, if not specified in ImGui::Begin() + IndentSpacing = 22.0f; // Horizontal spacing when e.g. entering a tree node + ColumnsMinSpacing = 6.0f; // Minimum horizontal spacing between two columns + ScrollbarWidth = 16.0f; // Width of the vertical scrollbar + GrabMinSize = 10.0f; // Minimum width/height of a slider or scrollbar grab + DisplaySafeAreaPadding = ImVec2(22,22); // Window positions are clamped to be visible within the display area. If you cannot see the edge of your screen (e.g. on a TV) increase the safe area padding + + Colors[ImGuiCol_Text] = ImVec4(0.90f, 0.90f, 0.90f, 1.00f); + Colors[ImGuiCol_WindowBg] = ImVec4(0.00f, 0.00f, 0.00f, 1.00f); + Colors[ImGuiCol_ChildWindowBg] = ImVec4(0.00f, 0.00f, 0.00f, 0.00f); + Colors[ImGuiCol_Border] = ImVec4(0.70f, 0.70f, 0.70f, 1.00f); + Colors[ImGuiCol_BorderShadow] = ImVec4(0.00f, 0.00f, 0.00f, 0.60f); + Colors[ImGuiCol_FrameBg] = ImVec4(0.80f, 0.80f, 0.80f, 0.30f); // Background of checkbox, radio button, plot, slider, text input + Colors[ImGuiCol_FrameBgHovered] = ImVec4(0.90f, 0.80f, 0.80f, 0.40f); + Colors[ImGuiCol_FrameBgActive] = ImVec4(0.90f, 0.65f, 0.65f, 0.45f); + Colors[ImGuiCol_TitleBg] = ImVec4(0.50f, 0.50f, 1.00f, 0.45f); + Colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.40f, 0.40f, 0.80f, 0.20f); + Colors[ImGuiCol_ScrollbarBg] = ImVec4(0.40f, 0.40f, 0.80f, 0.15f); + Colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.40f, 0.40f, 0.80f, 0.30f); + Colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.40f, 0.40f, 0.80f, 0.40f); + Colors[ImGuiCol_ScrollbarGrabActive] = ImVec4(0.80f, 0.50f, 0.50f, 0.40f); + Colors[ImGuiCol_ComboBg] = ImVec4(0.20f, 0.20f, 0.20f, 0.99f); + Colors[ImGuiCol_CheckMark] = ImVec4(0.90f, 0.90f, 0.90f, 0.50f); + Colors[ImGuiCol_SliderGrab] = ImVec4(1.00f, 1.00f, 1.00f, 0.30f); + Colors[ImGuiCol_SliderGrabActive] = ImVec4(0.80f, 0.50f, 0.50f, 1.00f); + Colors[ImGuiCol_Button] = ImVec4(0.67f, 0.40f, 0.40f, 0.60f); + Colors[ImGuiCol_ButtonHovered] = ImVec4(0.67f, 0.40f, 0.40f, 1.00f); + Colors[ImGuiCol_ButtonActive] = ImVec4(0.80f, 0.50f, 0.50f, 1.00f); + Colors[ImGuiCol_Header] = ImVec4(0.40f, 0.40f, 0.90f, 0.45f); + Colors[ImGuiCol_HeaderHovered] = ImVec4(0.45f, 0.45f, 0.90f, 0.80f); + Colors[ImGuiCol_HeaderActive] = ImVec4(0.53f, 0.53f, 0.87f, 0.80f); + Colors[ImGuiCol_Column] = ImVec4(0.50f, 0.50f, 0.50f, 1.00f); + Colors[ImGuiCol_ColumnHovered] = ImVec4(0.70f, 0.60f, 0.60f, 1.00f); + Colors[ImGuiCol_ColumnActive] = ImVec4(0.90f, 0.70f, 0.70f, 1.00f); + Colors[ImGuiCol_ResizeGrip] = ImVec4(1.00f, 1.00f, 1.00f, 0.30f); + Colors[ImGuiCol_ResizeGripHovered] = ImVec4(1.00f, 1.00f, 1.00f, 0.60f); + Colors[ImGuiCol_ResizeGripActive] = ImVec4(1.00f, 1.00f, 1.00f, 0.90f); + Colors[ImGuiCol_CloseButton] = ImVec4(0.50f, 0.50f, 0.90f, 0.50f); + Colors[ImGuiCol_CloseButtonHovered] = ImVec4(0.70f, 0.70f, 0.90f, 0.60f); + Colors[ImGuiCol_CloseButtonActive] = ImVec4(0.70f, 0.70f, 0.70f, 1.00f); + Colors[ImGuiCol_PlotLines] = ImVec4(1.00f, 1.00f, 1.00f, 1.00f); + Colors[ImGuiCol_PlotLinesHovered] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f); + Colors[ImGuiCol_PlotHistogram] = ImVec4(0.90f, 0.70f, 0.00f, 1.00f); + Colors[ImGuiCol_PlotHistogramHovered] = ImVec4(1.00f, 0.60f, 0.00f, 1.00f); + Colors[ImGuiCol_TextSelectedBg] = ImVec4(0.00f, 0.00f, 1.00f, 0.35f); + Colors[ImGuiCol_TooltipBg] = ImVec4(0.05f, 0.05f, 0.10f, 0.90f); +} + +// Statically allocated font atlas. This is merely a maneuver to keep ImFontAtlas definition at the bottom of the .h file (otherwise it'd be inside ImGuiIO) +// Also we wouldn't be able to new() one at this point, before users may define IO.MemAllocFn. +static ImFontAtlas GDefaultFontAtlas; + +ImGuiIO::ImGuiIO() +{ + // Most fields are initialized with zero + memset(this, 0, sizeof(*this)); + + DisplaySize = ImVec2(-1.0f, -1.0f); + DeltaTime = 1.0f/60.0f; + IniSavingRate = 5.0f; + IniFilename = "imgui.ini"; + LogFilename = "imgui_log.txt"; + Fonts = &GDefaultFontAtlas; + FontGlobalScale = 1.0f; + MousePos = ImVec2(-1,-1); + MousePosPrev = ImVec2(-1,-1); + MouseDoubleClickTime = 0.30f; + MouseDoubleClickMaxDist = 6.0f; + MouseDragThreshold = 6.0f; + UserData = NULL; + + // User functions + RenderDrawListsFn = NULL; + MemAllocFn = malloc; + MemFreeFn = free; + GetClipboardTextFn = GetClipboardTextFn_DefaultImpl; // Platform dependent default implementations + SetClipboardTextFn = SetClipboardTextFn_DefaultImpl; + ImeSetInputScreenPosFn = ImeSetInputScreenPosFn_DefaultImpl; +} + +// Pass in translated ASCII characters for text input. +// - with glfw you can get those from the callback set in glfwSetCharCallback() +// - on Windows you can get those using ToAscii+keyboard state, or via the WM_CHAR message +void ImGuiIO::AddInputCharacter(ImWchar c) +{ + const size_t n = ImStrlenW(InputCharacters); + if (n + 1 < sizeof(InputCharacters) / sizeof(InputCharacters[0])) + { + InputCharacters[n] = c; + InputCharacters[n+1] = 0; + } +} + +//----------------------------------------------------------------------------- +// Helpers +//----------------------------------------------------------------------------- + +#define IM_ARRAYSIZE(_ARR) ((int)(sizeof(_ARR)/sizeof(*_ARR))) + +#undef PI +const float PI = 3.14159265358979323846f; + +#ifdef INT_MAX +#define IM_INT_MIN INT_MIN +#define IM_INT_MAX INT_MAX +#else +#define IM_INT_MIN (-2147483647-1) +#define IM_INT_MAX (2147483647) +#endif + +// Play it nice with Windows users. Notepad in 2015 still doesn't display text data with Unix-style \n. +#ifdef _MSC_VER +#define STR_NEWLINE "\r\n" +#else +#define STR_NEWLINE "\n" +#endif + +// Math bits +// We are keeping those static in the .cpp file so as not to leak them outside, in the case the user has implicit cast operators between ImVec2 and its own types. +static inline ImVec2 operator*(const ImVec2& lhs, const float rhs) { return ImVec2(lhs.x*rhs, lhs.y*rhs); } +//static inline ImVec2 operator/(const ImVec2& lhs, const float rhs) { return ImVec2(lhs.x/rhs, lhs.y/rhs); } +static inline ImVec2 operator+(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(lhs.x+rhs.x, lhs.y+rhs.y); } +static inline ImVec2 operator-(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(lhs.x-rhs.x, lhs.y-rhs.y); } +static inline ImVec2 operator*(const ImVec2& lhs, const ImVec2 rhs) { return ImVec2(lhs.x*rhs.x, lhs.y*rhs.y); } +static inline ImVec2 operator/(const ImVec2& lhs, const ImVec2 rhs) { return ImVec2(lhs.x/rhs.x, lhs.y/rhs.y); } +static inline ImVec2& operator+=(ImVec2& lhs, const ImVec2& rhs) { lhs.x += rhs.x; lhs.y += rhs.y; return lhs; } +static inline ImVec2& operator-=(ImVec2& lhs, const ImVec2& rhs) { lhs.x -= rhs.x; lhs.y -= rhs.y; return lhs; } +static inline ImVec2& operator*=(ImVec2& lhs, const float rhs) { lhs.x *= rhs; lhs.y *= rhs; return lhs; } +//static inline ImVec2& operator/=(ImVec2& lhs, const float rhs) { lhs.x /= rhs; lhs.y /= rhs; return lhs; } + +static inline int ImMin(int lhs, int rhs) { return lhs < rhs ? lhs : rhs; } +static inline int ImMax(int lhs, int rhs) { return lhs >= rhs ? lhs : rhs; } +static inline float ImMin(float lhs, float rhs) { return lhs < rhs ? lhs : rhs; } +static inline float ImMax(float lhs, float rhs) { return lhs >= rhs ? lhs : rhs; } +static inline ImVec2 ImMin(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(ImMin(lhs.x,rhs.x), ImMin(lhs.y,rhs.y)); } +static inline ImVec2 ImMax(const ImVec2& lhs, const ImVec2& rhs) { return ImVec2(ImMax(lhs.x,rhs.x), ImMax(lhs.y,rhs.y)); } +static inline int ImClamp(int v, int mn, int mx) { return (v < mn) ? mn : (v > mx) ? mx : v; } +static inline float ImClamp(float v, float mn, float mx) { return (v < mn) ? mn : (v > mx) ? mx : v; } +static inline ImVec2 ImClamp(const ImVec2& f, const ImVec2& mn, ImVec2 mx) { return ImVec2(ImClamp(f.x,mn.x,mx.x), ImClamp(f.y,mn.y,mx.y)); } +static inline float ImSaturate(float f) { return (f < 0.0f) ? 0.0f : (f > 1.0f) ? 1.0f : f; } +static inline float ImLerp(float a, float b, float t) { return a + (b - a) * t; } +static inline ImVec2 ImLerp(const ImVec2& a, const ImVec2& b, const ImVec2& t) { return ImVec2(a.x + (b.x - a.x) * t.x, a.y + (b.y - a.y) * t.y); } +static inline float ImLengthSqr(const ImVec2& lhs) { return lhs.x*lhs.x + lhs.y*lhs.y; } + +static int ImStricmp(const char* str1, const char* str2) +{ + int d; + while ((d = toupper(*str2) - toupper(*str1)) == 0 && *str1) { str1++; str2++; } + return d; +} + +static int ImStrnicmp(const char* str1, const char* str2, int count) +{ + int d = 0; + while (count > 0 && (d = toupper(*str2) - toupper(*str1)) == 0 && *str1) { str1++; str2++; count--; } + return d; +} + +static char* ImStrdup(const char *str) +{ + char *buff = (char*)ImGui::MemAlloc(strlen(str) + 1); + IM_ASSERT(buff); + strcpy(buff, str); + return buff; +} + +static size_t ImStrlenW(const ImWchar* str) +{ + size_t n = 0; + while (*str++) n++; + return n; +} + +static const char* ImStristr(const char* haystack, const char* needle, const char* needle_end) +{ + if (!needle_end) + needle_end = needle + strlen(needle); + + const char un0 = (char)toupper(*needle); + while (*haystack) + { + if (toupper(*haystack) == un0) + { + const char* b = needle + 1; + for (const char* a = haystack + 1; b < needle_end; a++, b++) + if (toupper(*a) != toupper(*b)) + break; + if (b == needle_end) + return haystack; + } + haystack++; + } + return NULL; +} + +// Pass data_size==0 for zero-terminated string +// Try to replace with FNV1a hash? +static ImU32 ImHash(const void* data, size_t data_size, ImU32 seed = 0) +{ + static ImU32 crc32_lut[256] = { 0 }; + if (!crc32_lut[1]) + { + const ImU32 polynomial = 0xEDB88320; + for (ImU32 i = 0; i < 256; i++) + { + ImU32 crc = i; + for (ImU32 j = 0; j < 8; j++) + crc = (crc >> 1) ^ (ImU32(-int(crc & 1)) & polynomial); + crc32_lut[i] = crc; + } + } + + seed = ~seed; + ImU32 crc = seed; + const unsigned char* current = (const unsigned char*)data; + + if (data_size > 0) + { + // Known size + while (data_size--) + crc = (crc >> 8) ^ crc32_lut[(crc & 0xFF) ^ *current++]; + } + else + { + // Zero-terminated string + while (unsigned char c = *current++) + { + // We support a syntax of "label###id" where only "###id" is included in the hash, and only "label" gets displayed. + // Because this syntax is rarely used we are optimizing for the common case. + // - If we reach ### in the string we discard the hash so far and reset to the seed. + // - We don't do 'current += 2; continue;' after handling ### to keep the code smaller. + if (c == '#' && current[0] == '#' && current[1] == '#') + crc = seed; + + crc = (crc >> 8) ^ crc32_lut[(crc & 0xFF) ^ c]; + } + } + return ~crc; +} + +static size_t ImFormatString(char* buf, size_t buf_size, const char* fmt, ...) +{ + va_list args; + va_start(args, fmt); + int w = vsnprintf(buf, buf_size, fmt, args); + va_end(args); + buf[buf_size-1] = 0; + return (w == -1) ? buf_size : (size_t)w; +} + +static size_t ImFormatStringV(char* buf, size_t buf_size, const char* fmt, va_list args) +{ + int w = vsnprintf(buf, buf_size, fmt, args); + buf[buf_size-1] = 0; + return (w == -1) ? buf_size : (size_t)w; +} + +ImU32 ImGui::ColorConvertFloat4ToU32(const ImVec4& in) +{ + ImU32 out = ((ImU32)(ImSaturate(in.x)*255.f)); + out |= ((ImU32)(ImSaturate(in.y)*255.f) << 8); + out |= ((ImU32)(ImSaturate(in.z)*255.f) << 16); + out |= ((ImU32)(ImSaturate(in.w)*255.f) << 24); + return out; +} + +// Convert rgb floats ([0-1],[0-1],[0-1]) to hsv floats ([0-1],[0-1],[0-1]), from Foley & van Dam p592 +// Optimized http://lolengine.net/blog/2013/01/13/fast-rgb-to-hsv +void ImGui::ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v) +{ + float K = 0.f; + if (g < b) + { + const float tmp = g; g = b; b = tmp; + K = -1.f; + } + if (r < g) + { + const float tmp = r; r = g; g = tmp; + K = -2.f / 6.f - K; + } + + const float chroma = r - (g < b ? g : b); + out_h = fabsf(K + (g - b) / (6.f * chroma + 1e-20f)); + out_s = chroma / (r + 1e-20f); + out_v = r; +} + +// Convert hsv floats ([0-1],[0-1],[0-1]) to rgb floats ([0-1],[0-1],[0-1]), from Foley & van Dam p593 +// also http://en.wikipedia.org/wiki/HSL_and_HSV +void ImGui::ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b) +{ + if (s == 0.0f) + { + // gray + out_r = out_g = out_b = v; + return; + } + + h = fmodf(h, 1.0f) / (60.0f/360.0f); + int i = (int)h; + float f = h - (float)i; + float p = v * (1.0f - s); + float q = v * (1.0f - s * f); + float t = v * (1.0f - s * (1.0f - f)); + + switch (i) + { + case 0: out_r = v; out_g = t; out_b = p; break; + case 1: out_r = q; out_g = v; out_b = p; break; + case 2: out_r = p; out_g = v; out_b = t; break; + case 3: out_r = p; out_g = q; out_b = v; break; + case 4: out_r = t; out_g = p; out_b = v; break; + case 5: default: out_r = v; out_g = p; out_b = q; break; + } +} + +// Load file content into memory +// Memory allocated with ImGui::MemAlloc(), must be freed by user using ImGui::MemFree() +static bool ImLoadFileToMemory(const char* filename, const char* file_open_mode, void** out_file_data, size_t* out_file_size, size_t padding_bytes) +{ + IM_ASSERT(filename && file_open_mode && out_file_data && out_file_size); + *out_file_data = NULL; + *out_file_size = 0; + + FILE* f; + if ((f = fopen(filename, file_open_mode)) == NULL) + return false; + + long file_size_signed; + if (fseek(f, 0, SEEK_END) || (file_size_signed = ftell(f)) == -1 || fseek(f, 0, SEEK_SET)) + { + fclose(f); + return false; + } + + size_t file_size = (size_t)file_size_signed; + void* file_data = ImGui::MemAlloc(file_size + padding_bytes); + if (file_data == NULL) + { + fclose(f); + return false; + } + if (fread(file_data, 1, file_size, f) != file_size) + { + fclose(f); + ImGui::MemFree(file_data); + return false; + } + if (padding_bytes > 0) + memset((void *)(((char*)file_data) + file_size), 0, padding_bytes); + + fclose(f); + *out_file_data = file_data; + *out_file_size = file_size; + + return true; +} + +//----------------------------------------------------------------------------- + +struct ImGuiColMod // Color modifier, backup of modified data so we can restore it +{ + ImGuiCol Col; + ImVec4 PreviousValue; +}; + +struct ImGuiStyleMod // Style modifier, backup of modified data so we can restore it +{ + ImGuiStyleVar Var; + ImVec2 PreviousValue; +}; + +struct ImRect // 2D axis aligned bounding-box +{ + ImVec2 Min; + ImVec2 Max; + + ImRect() { Min = ImVec2(FLT_MAX,FLT_MAX); Max = ImVec2(-FLT_MAX,-FLT_MAX); } + ImRect(const ImVec2& min, const ImVec2& max) { Min = min; Max = max; } + ImRect(const ImVec4& v) { Min.x = v.x; Min.y = v.y; Max.x = v.z; Max.y = v.w; } + ImRect(float x1, float y1, float x2, float y2) { Min.x = x1; Min.y = y1; Max.x = x2; Max.y = y2; } + + ImVec2 GetCenter() const { return Min + (Max-Min)*0.5f; } + ImVec2 GetSize() const { return Max-Min; } + float GetWidth() const { return (Max-Min).x; } + float GetHeight() const { return (Max-Min).y; } + ImVec2 GetTL() const { return Min; } + ImVec2 GetTR() const { return ImVec2(Max.x,Min.y); } + ImVec2 GetBL() const { return ImVec2(Min.x,Max.y); } + ImVec2 GetBR() const { return Max; } + bool Contains(const ImVec2& p) const { return p.x >= Min.x && p.y >= Min.y && p.x < Max.x && p.y < Max.y; } + bool Contains(const ImRect& r) const { return r.Min.x >= Min.x && r.Min.y >= Min.y && r.Max.x < Max.x && r.Max.y < Max.y; } + bool Overlaps(const ImRect& r) const { return r.Min.y < Max.y && r.Max.y > Min.y && r.Min.x < Max.x && r.Max.x > Min.x; } + void Add(const ImVec2& rhs) { Min.x = ImMin(Min.x, rhs.x); Min.y = ImMin(Min.y, rhs.y); Max.x = ImMax(Max.x, rhs.x); Max.y = ImMax(Max.x, rhs.x); } + void Add(const ImRect& rhs) { Min.x = ImMin(Min.x, rhs.Min.x); Min.y = ImMin(Min.y, rhs.Min.y); Max.x = ImMax(Max.x, rhs.Max.x); Max.y = ImMax(Max.y, rhs.Max.y); } + void Expand(const float amount) { Min.x -= amount; Min.y -= amount; Max.x += amount; Max.y += amount; } + void Expand(const ImVec2& amount) { Min -= amount; Max += amount; } + void Clip(const ImRect& clip) { Min.x = ImMax(Min.x, clip.Min.x); Min.y = ImMax(Min.y, clip.Min.y); Max.x = ImMin(Max.x, clip.Max.x); Max.y = ImMin(Max.y, clip.Max.y); } + ImVec2 GetClosestPoint(ImVec2 p, bool on_edge) const + { + if (!on_edge && Contains(p)) + return p; + if (p.x > Max.x) p.x = Max.x; + else if (p.x < Min.x) p.x = Min.x; + if (p.y > Max.y) p.y = Max.y; + else if (p.y < Min.y) p.y = Min.y; + return p; + } +}; +typedef ImRect ImGuiAabb; // FIXME-OBSOLETE + +struct ImGuiGroupData +{ + ImVec2 BackupCursorPos; + ImVec2 BackupCursorMaxPos; + float BackupColumnsStartX; + float BackupCurrentLineHeight; + float BackupCurrentLineTextBaseOffset; + float BackupLogLinePosY; +}; + +// Temporary per-window data, reset at the beginning of the frame +struct ImGuiDrawContext +{ + ImVec2 CursorPos; + ImVec2 CursorPosPrevLine; + ImVec2 CursorStartPos; + ImVec2 CursorMaxPos; // Implicitly calculate the size of our contents, always extending. Saved into window->SizeContents at the end of the frame + float CurrentLineHeight; + float CurrentLineTextBaseOffset; + float PrevLineHeight; + float PrevLineTextBaseOffset; + float LogLinePosY; + int TreeDepth; + ImGuiID LastItemID; + ImRect LastItemRect; + bool LastItemHoveredAndUsable; + bool LastItemHoveredRect; + ImVector ChildWindows; + ImVector AllowKeyboardFocus; + ImVector ItemWidth; // 0.0: default, >0.0: width in pixels, <0.0: align xx pixels to the right of window + ImVector TextWrapPos; + ImVector GroupStack; + ImGuiColorEditMode ColorEditMode; + ImGuiStorage* StateStorage; + + float ColumnsStartX; // Indentation / start position from left of window (increased by TreePush/TreePop, etc.) + float ColumnsOffsetX; // Offset to the current column (if ColumnsCurrent > 0). FIXME: This and the above should be a stack to allow use cases like Tree->Column->Tree. Need revamp columns API. + int ColumnsCurrent; + int ColumnsCount; + ImVec2 ColumnsStartPos; + float ColumnsCellMinY; + float ColumnsCellMaxY; + bool ColumnsShowBorders; + ImGuiID ColumnsSetID; + ImVector ColumnsOffsetsT; // Columns offset normalized 0.0 (far left) -> 1.0 (far right) + + ImGuiDrawContext() + { + CursorPos = CursorPosPrevLine = CursorStartPos = CursorMaxPos = ImVec2(0.0f, 0.0f); + CurrentLineHeight = PrevLineHeight = 0.0f; + CurrentLineTextBaseOffset = PrevLineTextBaseOffset = 0.0f; + LogLinePosY = -1.0f; + TreeDepth = 0; + LastItemID = 0; + LastItemRect = ImRect(0.0f,0.0f,0.0f,0.0f); + LastItemHoveredAndUsable = LastItemHoveredRect = false; + ColorEditMode = ImGuiColorEditMode_RGB; + StateStorage = NULL; + + ColumnsStartX = 0.0f; + ColumnsOffsetX = 0.0f; + ColumnsCurrent = 0; + ColumnsCount = 1; + ColumnsStartPos = ImVec2(0.0f, 0.0f); + ColumnsCellMinY = ColumnsCellMaxY = 0.0f; + ColumnsShowBorders = true; + ColumnsSetID = 0; + } +}; + +// Internal state of the currently focused/edited text input box +struct ImGuiTextEditState +{ + ImGuiID Id; // widget id owning the text state + ImWchar Text[1024]; // edit buffer, we need to persist but can't guarantee the persistence of the user-provided buffer. so we copy into own buffer. + char InitialText[1024*3+1]; // backup of end-user buffer at the time of focus (in UTF-8, unaltered) + size_t CurLenA, CurLenW; // we need to maintain our buffer length in both UTF-8 and wchar format. + size_t BufSizeA; // end-user buffer size, <= 1024 (or increase above) + float Width; // widget width + float ScrollX; + STB_TexteditState StbState; + float CursorAnim; + ImVec2 InputCursorScreenPos; // Cursor position in screen space to be used by IME callback. + bool SelectedAllMouseLock; + ImFont* Font; + float FontSize; + + ImGuiTextEditState() { memset(this, 0, sizeof(*this)); } + + void CursorAnimReset() { CursorAnim = -0.30f; } // After a user-input the cursor stays on for a while without blinking + bool CursorIsVisible() const { return CursorAnim <= 0.0f || fmodf(CursorAnim, 1.20f) <= 0.80f; } // Blinking + bool HasSelection() const { return StbState.select_start != StbState.select_end; } + void SelectAll() { StbState.select_start = 0; StbState.select_end = (int)ImStrlenW(Text); StbState.cursor = StbState.select_end; StbState.has_preferred_x = false; } + + void OnKeyPressed(int key); + void UpdateScrollOffset(); + ImVec2 CalcDisplayOffsetFromCharIdx(int i) const; + + // Static functions because they are used to render non-focused instances of a text input box + static const char* GetTextPointerClippedA(ImFont* font, float font_size, const char* text, float width, ImVec2* out_text_size = NULL); + static const ImWchar* GetTextPointerClippedW(ImFont* font, float font_size, const ImWchar* text, float width, ImVec2* out_text_size = NULL); + static void RenderTextScrolledClipped(ImFont* font, float font_size, const char* text, ImVec2 pos_base, float width, float scroll_x); +}; + +// Data saved in imgui.ini file +struct ImGuiIniData +{ + char* Name; + ImGuiID ID; + ImVec2 Pos; + ImVec2 Size; + bool Collapsed; + + ImGuiIniData() { memset(this, 0, sizeof(*this)); } + ~ImGuiIniData() { if (Name) { ImGui::MemFree(Name); Name = NULL; } } +}; + +struct ImGuiMouseCursorData +{ + ImGuiMouseCursor Type; + ImVec2 Offset; + ImVec2 Size; + ImVec2 TexUvMin[2]; + ImVec2 TexUvMax[2]; +}; + +// Main state for ImGui +struct ImGuiState +{ + bool Initialized; + ImGuiIO IO; + ImGuiStyle Style; + ImFont* Font; // (Shortcut) == FontStack.empty() ? IO.Font : FontStack.back() + float FontSize; // (Shortcut) == FontBaseSize * g.CurrentWindow->FontWindowScale == window->FontSize() + float FontBaseSize; // (Shortcut) == IO.FontGlobalScale * Font->Scale * Font->FontSize. Size of characters. + ImVec2 FontTexUvWhitePixel; // (Shortcut) == Font->TexUvForWhite + + float Time; + int FrameCount; + int FrameCountRendered; + ImVector Windows; + ImVector WindowsSortBuffer; + ImGuiWindow* CurrentWindow; // Being drawn into + ImVector CurrentWindowStack; + ImGuiWindow* FocusedWindow; // Will catch keyboard inputs + ImGuiWindow* HoveredWindow; // Will catch mouse inputs + ImGuiWindow* HoveredRootWindow; // Will catch mouse inputs (for focus/move only) + ImGuiID HoveredId; // Hovered widget + ImGuiID ActiveId; // Active widget + ImGuiID ActiveIdPreviousFrame; + bool ActiveIdIsAlive; + bool ActiveIdIsJustActivated; // Set when + bool ActiveIdIsFocusedOnly; // Set only by active widget. Denote focus but no active interaction. + ImGuiWindow* MovedWindow; // Track the child window we clicked on to move a window. Only valid if ActiveID is the "#MOVE" identifier of a window. + float SettingsDirtyTimer; + ImVector Settings; + int DisableHideTextAfterDoubleHash; + ImVector ColorModifiers; + ImVector StyleModifiers; + ImVector FontStack; + + ImVec2 SetNextWindowPosVal; + ImGuiSetCond SetNextWindowPosCond; + ImVec2 SetNextWindowSizeVal; + ImGuiSetCond SetNextWindowSizeCond; + bool SetNextWindowCollapsedVal; + ImGuiSetCond SetNextWindowCollapsedCond; + bool SetNextWindowFocus; + bool SetNextTreeNodeOpenedVal; + ImGuiSetCond SetNextTreeNodeOpenedCond; + + // Render + ImVector RenderDrawLists[3]; + + // Mouse cursor + ImGuiMouseCursor MouseCursor; + ImDrawList MouseCursorDrawList; // Optional software render of mouse cursors, if io.MouseDrawCursor is set + ImGuiMouseCursorData MouseCursorData[ImGuiMouseCursor_Count_]; + + // Widget state + ImGuiTextEditState InputTextState; + ImGuiID ScalarAsInputTextId; // Temporary text input when CTRL+clicking on a slider, etc. + ImGuiStorage ColorEditModeStorage; // for user selection + ImGuiID ActiveComboID; + ImVec2 ActiveClickDeltaToCenter; + float DragCurrentValue; // current dragged value, always float, not rounded by end-user precision settings + ImVec2 DragLastMouseDelta; + float DragSpeedDefaultRatio; // if speed == 0.0f, uses (max-min) * DragSpeedDefaultRatio + float DragSpeedScaleSlow; + float DragSpeedScaleFast; + float ScrollbarClickDeltaToGrabCenter; // distance between mouse and center of grab box, normalized in parent space + char Tooltip[1024]; + char* PrivateClipboard; // if no custom clipboard handler is defined + + // Logging + bool LogEnabled; + FILE* LogFile; + ImGuiTextBuffer* LogClipboard; // pointer so our GImGui static constructor doesn't call heap allocators. + int LogStartDepth; + int LogAutoExpandMaxDepth; + + // Misc + float FramerateSecPerFrame[120]; // calculate estimate of framerate for user + int FramerateSecPerFrameIdx; + float FramerateSecPerFrameAccum; + char TempBuffer[1024*3+1]; // temporary text buffer + + ImGuiState() + { + Initialized = false; + Font = NULL; + FontBaseSize = FontSize = 0.0f; + FontTexUvWhitePixel = ImVec2(0.0f, 0.0f); + + Time = 0.0f; + FrameCount = 0; + FrameCountRendered = -1; + CurrentWindow = NULL; + FocusedWindow = NULL; + HoveredWindow = NULL; + HoveredRootWindow = NULL; + HoveredId = 0; + ActiveId = 0; + ActiveIdPreviousFrame = 0; + ActiveIdIsAlive = false; + ActiveIdIsJustActivated = false; + ActiveIdIsFocusedOnly = false; + MovedWindow = NULL; + SettingsDirtyTimer = 0.0f; + DisableHideTextAfterDoubleHash = 0; + + SetNextWindowPosVal = ImVec2(0.0f, 0.0f); + SetNextWindowPosCond = 0; + SetNextWindowSizeVal = ImVec2(0.0f, 0.0f); + SetNextWindowSizeCond = 0; + SetNextWindowCollapsedVal = false; + SetNextWindowCollapsedCond = 0; + SetNextWindowFocus = false; + SetNextTreeNodeOpenedVal = false; + SetNextTreeNodeOpenedCond = 0; + + ScalarAsInputTextId = 0; + ActiveComboID = 0; + ActiveClickDeltaToCenter = ImVec2(0.0f, 0.0f); + DragCurrentValue = 0.0f; + DragLastMouseDelta = ImVec2(0.0f, 0.0f); + DragSpeedDefaultRatio = 0.01f; + DragSpeedScaleSlow = 0.01f; + DragSpeedScaleFast = 10.0f; + ScrollbarClickDeltaToGrabCenter = 0.0f; + memset(Tooltip, 0, sizeof(Tooltip)); + PrivateClipboard = NULL; + + MouseCursor = ImGuiMouseCursor_Arrow; + + LogEnabled = false; + LogFile = NULL; + LogClipboard = NULL; + LogStartDepth = 0; + LogAutoExpandMaxDepth = 2; + + memset(FramerateSecPerFrame, 0, sizeof(FramerateSecPerFrame)); + FramerateSecPerFrameIdx = 0; + FramerateSecPerFrameAccum = 0.0f; + } +}; + +static ImGuiState GImDefaultState; // Internal state storage +static ImGuiState* GImGui = &GImDefaultState; // We access everything through this pointer. NB: this pointer is always assumed to be != NULL + +struct ImGuiWindow +{ + char* Name; + ImGuiID ID; + ImGuiWindowFlags Flags; + ImVec2 PosFloat; + ImVec2 Pos; // Position rounded-up to nearest pixel + ImVec2 Size; // Current size (==SizeFull or collapsed title bar size) + ImVec2 SizeFull; // Size when non collapsed + ImVec2 SizeContents; // Size of contents (== extents reach of the drawing cursor) from previous frame + ImGuiID MoveID; // == window->GetID("#MOVE") + float ScrollY; + float NextScrollY; + bool ScrollbarY; + bool Visible; // Set to true on Begin() + bool WasVisible; + bool Accessed; // Set to true when any widget access the current window + bool Collapsed; // Set when collapsing window to become only title-bar + bool SkipItems; // == Visible && !Collapsed + int AutoFitFrames; + bool AutoFitOnlyGrows; + int SetWindowPosAllowFlags; // bit ImGuiSetCond_*** specify if SetWindowPos() call will succeed with this particular flag. + int SetWindowSizeAllowFlags; // bit ImGuiSetCond_*** specify if SetWindowSize() call will succeed with this particular flag. + int SetWindowCollapsedAllowFlags; // bit ImGuiSetCond_*** specify if SetWindowCollapsed() call will succeed with this particular flag. + + ImGuiDrawContext DC; // Temporary per-window data, reset at the beginning of the frame + ImVector IDStack; // ID stack. ID are hashes seeded with the value at the top of the stack + ImVector ClipRectStack; // Scissoring / clipping rectangle. x1, y1, x2, y2. + ImRect ClippedRect; // = ClipRectStack.front() after setup in Begin() + int LastFrameDrawn; + float ItemWidthDefault; + ImGuiStorage StateStorage; + float FontWindowScale; // Scale multiplier per-window + ImDrawList* DrawList; + ImGuiWindow* RootWindow; + + // Focus + int FocusIdxAllCounter; // Start at -1 and increase as assigned via FocusItemRegister() + int FocusIdxTabCounter; // (same, but only count widgets which you can Tab through) + int FocusIdxAllRequestCurrent; // Item being requested for focus + int FocusIdxTabRequestCurrent; // Tab-able item being requested for focus + int FocusIdxAllRequestNext; // Item being requested for focus, for next update (relies on layout to be stable between the frame pressing TAB and the next frame) + int FocusIdxTabRequestNext; // " + +public: + ImGuiWindow(const char* name); + ~ImGuiWindow(); + + ImGuiID GetID(const char* str, const char* str_end = NULL); + ImGuiID GetID(const void* ptr); + + bool FocusItemRegister(bool is_active, bool tab_stop = true); // Return true if focus is requested + void FocusItemUnregister(); + + ImRect Rect() const { return ImRect(Pos, Pos+Size); } + float CalcFontSize() const { return GImGui->FontBaseSize * FontWindowScale; } + float TitleBarHeight() const { return (Flags & ImGuiWindowFlags_NoTitleBar) ? 0 : CalcFontSize() + GImGui->Style.FramePadding.y * 2.0f; } + ImRect TitleBarRect() const { return ImRect(Pos, Pos + ImVec2(SizeFull.x, TitleBarHeight())); } + ImVec2 WindowPadding() const { return ((Flags & ImGuiWindowFlags_ChildWindow) && !(Flags & ImGuiWindowFlags_ShowBorders) && !(Flags & ImGuiWindowFlags_ComboBox)) ? ImVec2(0,0) : GImGui->Style.WindowPadding; } + ImU32 Color(ImGuiCol idx, float a=1.f) const { ImVec4 c = GImGui->Style.Colors[idx]; c.w *= GImGui->Style.Alpha * a; return ImGui::ColorConvertFloat4ToU32(c); } + ImU32 Color(const ImVec4& col) const { ImVec4 c = col; c.w *= GImGui->Style.Alpha; return ImGui::ColorConvertFloat4ToU32(c); } +}; + +static inline ImGuiWindow* GetCurrentWindow() +{ + // If this ever crash it probably means that ImGui::NewFrame() hasn't been called. We should always have a CurrentWindow in the stack (there is an implicit "Debug" window) + ImGuiState& g = *GImGui; + g.CurrentWindow->Accessed = true; + return g.CurrentWindow; +} + +static inline void SetCurrentWindow(ImGuiWindow* window) +{ + ImGuiState& g = *GImGui; + g.CurrentWindow = window; + if (window) + g.FontSize = window->CalcFontSize(); +} + +static inline ImGuiWindow* GetParentWindow() +{ + ImGuiState& g = *GImGui; + IM_ASSERT(g.CurrentWindowStack.size() >= 2); + return g.CurrentWindowStack[g.CurrentWindowStack.size() - 2]; +} + +static void SetActiveId(ImGuiID id) +{ + ImGuiState& g = *GImGui; + g.ActiveId = id; + g.ActiveIdIsFocusedOnly = false; + g.ActiveIdIsJustActivated = true; +} + +static void RegisterAliveId(ImGuiID id) +{ + ImGuiState& g = *GImGui; + if (g.ActiveId == id) + g.ActiveIdIsAlive = true; +} + +//----------------------------------------------------------------------------- + +// Helper: Key->value storage +void ImGuiStorage::Clear() +{ + Data.clear(); +} + +// std::lower_bound but without the bullshit +static ImVector::iterator LowerBound(ImVector& data, ImU32 key) +{ + ImVector::iterator first = data.begin(); + ImVector::iterator last = data.end(); + int count = (int)(last - first); + while (count > 0) + { + int count2 = count / 2; + ImVector::iterator mid = first + count2; + if (mid->key < key) + { + first = ++mid; + count -= count2 + 1; + } + else + { + count = count2; + } + } + return first; +} + +int ImGuiStorage::GetInt(ImU32 key, int default_val) const +{ + ImVector::iterator it = LowerBound(const_cast&>(Data), key); + if (it == Data.end() || it->key != key) + return default_val; + return it->val_i; +} + +float ImGuiStorage::GetFloat(ImU32 key, float default_val) const +{ + ImVector::iterator it = LowerBound(const_cast&>(Data), key); + if (it == Data.end() || it->key != key) + return default_val; + return it->val_f; +} + +void* ImGuiStorage::GetVoidPtr(ImGuiID key) const +{ + ImVector::iterator it = LowerBound(const_cast&>(Data), key); + if (it == Data.end() || it->key != key) + return NULL; + return it->val_p; +} + +// References are only valid until a new value is added to the storage. Calling a Set***() function or a Get***Ref() function invalidates the pointer. +int* ImGuiStorage::GetIntRef(ImGuiID key, int default_val) +{ + ImVector::iterator it = LowerBound(Data, key); + if (it == Data.end() || it->key != key) + it = Data.insert(it, Pair(key, default_val)); + return &it->val_i; +} + +float* ImGuiStorage::GetFloatRef(ImGuiID key, float default_val) +{ + ImVector::iterator it = LowerBound(Data, key); + if (it == Data.end() || it->key != key) + it = Data.insert(it, Pair(key, default_val)); + return &it->val_f; +} + +void** ImGuiStorage::GetVoidPtrRef(ImGuiID key, void* default_val) +{ + ImVector::iterator it = LowerBound(Data, key); + if (it == Data.end() || it->key != key) + it = Data.insert(it, Pair(key, default_val)); + return &it->val_p; +} + +// FIXME-OPT: Wasting CPU because all SetInt() are preceeded by GetInt() calls so we should have the result from lower_bound already in place. +// However we only use SetInt() on explicit user action (so that's maximum once a frame) so the optimisation isn't much needed. +void ImGuiStorage::SetInt(ImU32 key, int val) +{ + ImVector::iterator it = LowerBound(Data, key); + if (it == Data.end() || it->key != key) + { + Data.insert(it, Pair(key, val)); + return; + } + it->val_i = val; +} + +void ImGuiStorage::SetFloat(ImU32 key, float val) +{ + ImVector::iterator it = LowerBound(Data, key); + if (it == Data.end() || it->key != key) + { + Data.insert(it, Pair(key, val)); + return; + } + it->val_f = val; +} + +void ImGuiStorage::SetVoidPtr(ImU32 key, void* val) +{ + ImVector::iterator it = LowerBound(Data, key); + if (it == Data.end() || it->key != key) + { + Data.insert(it, Pair(key, val)); + return; + } + it->val_p = val; +} + +void ImGuiStorage::SetAllInt(int v) +{ + for (size_t i = 0; i < Data.size(); i++) + Data[i].val_i = v; +} + +//----------------------------------------------------------------------------- + +// Helper: Parse and apply text filters. In format "aaaaa[,bbbb][,ccccc]" +ImGuiTextFilter::ImGuiTextFilter(const char* default_filter) +{ + if (default_filter) + { + ImFormatString(InputBuf, IM_ARRAYSIZE(InputBuf), "%s", default_filter); + Build(); + } + else + { + InputBuf[0] = 0; + CountGrep = 0; + } +} + +void ImGuiTextFilter::Draw(const char* label, float width) +{ + if (width > 0.0f) + ImGui::PushItemWidth(width); + ImGui::InputText(label, InputBuf, IM_ARRAYSIZE(InputBuf)); + if (width > 0.0f) + ImGui::PopItemWidth(); + Build(); +} + +void ImGuiTextFilter::TextRange::split(char separator, ImVector& out) +{ + out.resize(0); + const char* wb = b; + const char* we = wb; + while (we < e) + { + if (*we == separator) + { + out.push_back(TextRange(wb, we)); + wb = we + 1; + } + we++; + } + if (wb != we) + out.push_back(TextRange(wb, we)); +} + +void ImGuiTextFilter::Build() +{ + Filters.resize(0); + TextRange input_range(InputBuf, InputBuf+strlen(InputBuf)); + input_range.split(',', Filters); + + CountGrep = 0; + for (size_t i = 0; i != Filters.size(); i++) + { + Filters[i].trim_blanks(); + if (Filters[i].empty()) + continue; + if (Filters[i].front() != '-') + CountGrep += 1; + } +} + +bool ImGuiTextFilter::PassFilter(const char* val) const +{ + if (Filters.empty()) + return true; + + if (val == NULL) + val = ""; + + for (size_t i = 0; i != Filters.size(); i++) + { + const TextRange& f = Filters[i]; + if (f.empty()) + continue; + if (f.front() == '-') + { + // Subtract + if (ImStristr(val, f.begin()+1, f.end()) != NULL) + return false; + } + else + { + // Grep + if (ImStristr(val, f.begin(), f.end()) != NULL) + return true; + } + } + + // Implicit * grep + if (CountGrep == 0) + return true; + + return false; +} + +//----------------------------------------------------------------------------- + +// On some platform vsnprintf() takes va_list by reference and modifies it. +// va_copy is the 'correct' way to copy a va_list but Visual Studio prior to 2013 doesn't have it. +#ifndef va_copy +#define va_copy(dest, src) (dest = src) +#endif + +// Helper: Text buffer for logging/accumulating text +void ImGuiTextBuffer::appendv(const char* fmt, va_list args) +{ + va_list args_copy; + va_copy(args_copy, args); + + int len = vsnprintf(NULL, 0, fmt, args); // FIXME-OPT: could do a first pass write attempt, likely successful on first pass. + if (len <= 0) + return; + + const size_t write_off = Buf.size(); + const size_t needed_sz = write_off + (size_t)len; + if (write_off + (size_t)len >= Buf.capacity()) + { + const size_t double_capacity = Buf.capacity() * 2; + Buf.reserve(needed_sz > double_capacity ? needed_sz : double_capacity); + } + + Buf.resize(needed_sz); + ImFormatStringV(&Buf[write_off] - 1, (size_t)len+1, fmt, args_copy); +} + +void ImGuiTextBuffer::append(const char* fmt, ...) +{ + va_list args; + va_start(args, fmt); + appendv(fmt, args); + va_end(args); +} + +//----------------------------------------------------------------------------- + +ImGuiWindow::ImGuiWindow(const char* name) +{ + Name = ImStrdup(name); + ID = ImHash(name, 0); + IDStack.push_back(ID); + MoveID = GetID("#MOVE"); + + Flags = 0; + PosFloat = Pos = ImVec2(0.0f, 0.0f); + Size = SizeFull = ImVec2(0.0f, 0.0f); + SizeContents = ImVec2(0.0f, 0.0f); + ScrollY = 0.0f; + NextScrollY = 0.0f; + ScrollbarY = false; + Visible = WasVisible = false; + Accessed = false; + Collapsed = false; + SkipItems = false; + AutoFitFrames = -1; + AutoFitOnlyGrows = false; + SetWindowPosAllowFlags = SetWindowSizeAllowFlags = SetWindowCollapsedAllowFlags = ImGuiSetCond_Always | ImGuiSetCond_Once | ImGuiSetCond_FirstUseEver; + + LastFrameDrawn = -1; + ItemWidthDefault = 0.0f; + FontWindowScale = 1.0f; + + DrawList = (ImDrawList*)ImGui::MemAlloc(sizeof(ImDrawList)); + new(DrawList) ImDrawList(); + RootWindow = NULL; + + FocusIdxAllCounter = FocusIdxTabCounter = -1; + FocusIdxAllRequestCurrent = FocusIdxTabRequestCurrent = IM_INT_MAX; + FocusIdxAllRequestNext = FocusIdxTabRequestNext = IM_INT_MAX; +} + +ImGuiWindow::~ImGuiWindow() +{ + DrawList->~ImDrawList(); + ImGui::MemFree(DrawList); + DrawList = NULL; + ImGui::MemFree(Name); + Name = NULL; +} + +ImGuiID ImGuiWindow::GetID(const char* str, const char* str_end) +{ + ImGuiID seed = IDStack.back(); + const ImGuiID id = ImHash(str, str_end ? str_end - str : 0, seed); + RegisterAliveId(id); + return id; +} + +ImGuiID ImGuiWindow::GetID(const void* ptr) +{ + ImGuiID seed = IDStack.back(); + const ImGuiID id = ImHash(&ptr, sizeof(void*), seed); + RegisterAliveId(id); + return id; +} + +bool ImGuiWindow::FocusItemRegister(bool is_active, bool tab_stop) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + + const bool allow_keyboard_focus = window->DC.AllowKeyboardFocus.back(); + FocusIdxAllCounter++; + if (allow_keyboard_focus) + FocusIdxTabCounter++; + + // Process keyboard input at this point: TAB, Shift-TAB switch focus + // We can always TAB out of a widget that doesn't allow tabbing in. + if (tab_stop && FocusIdxAllRequestNext == IM_INT_MAX && FocusIdxTabRequestNext == IM_INT_MAX && is_active && IsKeyPressedMap(ImGuiKey_Tab)) + { + // Modulo on index will be applied at the end of frame once we've got the total counter of items. + FocusIdxTabRequestNext = FocusIdxTabCounter + (g.IO.KeyShift ? (allow_keyboard_focus ? -1 : 0) : +1); + } + + if (FocusIdxAllCounter == FocusIdxAllRequestCurrent) + return true; + + if (allow_keyboard_focus) + if (FocusIdxTabCounter == FocusIdxTabRequestCurrent) + return true; + + return false; +} + +void ImGuiWindow::FocusItemUnregister() +{ + FocusIdxAllCounter--; + FocusIdxTabCounter--; +} + +static inline void AddDrawListToRenderList(ImVector& out_render_list, ImDrawList* draw_list) +{ + if (!draw_list->commands.empty() && !draw_list->vtx_buffer.empty()) + { + if (draw_list->commands.back().vtx_count == 0) + draw_list->commands.pop_back(); + out_render_list.push_back(draw_list); + GImGui->IO.MetricsRenderVertices += (int)draw_list->vtx_buffer.size(); + } +} + +static void AddWindowToRenderList(ImVector& out_render_list, ImGuiWindow* window) +{ + AddDrawListToRenderList(out_render_list, window->DrawList); + for (size_t i = 0; i < window->DC.ChildWindows.size(); i++) + { + ImGuiWindow* child = window->DC.ChildWindows[i]; + if (child->Visible) // clipped children may have been marked not Visible + AddWindowToRenderList(out_render_list, child); + } +} + +//----------------------------------------------------------------------------- + +void* ImGui::MemAlloc(size_t sz) +{ + return GImGui->IO.MemAllocFn(sz); +} + +void ImGui::MemFree(void* ptr) +{ + return GImGui->IO.MemFreeFn(ptr); +} + +static ImGuiIniData* FindWindowSettings(const char* name) +{ + ImGuiState& g = *GImGui; + ImGuiID id = ImHash(name, 0); + for (size_t i = 0; i != g.Settings.size(); i++) + { + ImGuiIniData* ini = g.Settings[i]; + if (ini->ID == id) + return ini; + } + return NULL; +} + +static ImGuiIniData* AddWindowSettings(const char* name) +{ + ImGuiIniData* ini = (ImGuiIniData*)ImGui::MemAlloc(sizeof(ImGuiIniData)); + new(ini) ImGuiIniData(); + ini->Name = ImStrdup(name); + ini->ID = ImHash(name, 0); + ini->Collapsed = false; + ini->Pos = ImVec2(FLT_MAX,FLT_MAX); + ini->Size = ImVec2(0,0); + GImGui->Settings.push_back(ini); + return ini; +} + +// Zero-tolerance, poor-man .ini parsing +// FIXME: Write something less rubbish +static void LoadSettings() +{ + ImGuiState& g = *GImGui; + const char* filename = g.IO.IniFilename; + if (!filename) + return; + + char* file_data; + size_t file_size; + if (!ImLoadFileToMemory(filename, "rb", (void**)&file_data, &file_size, 1)) + return; + + ImGuiIniData* settings = NULL; + const char* buf_end = file_data + file_size; + for (const char* line_start = file_data; line_start < buf_end; ) + { + const char* line_end = line_start; + while (line_end < buf_end && *line_end != '\n' && *line_end != '\r') + line_end++; + + if (line_start[0] == '[' && line_end > line_start && line_end[-1] == ']') + { + char name[64]; + ImFormatString(name, IM_ARRAYSIZE(name), "%.*s", line_end-line_start-2, line_start+1); + settings = FindWindowSettings(name); + if (!settings) + settings = AddWindowSettings(name); + } + else if (settings) + { + float x, y; + int i; + if (sscanf(line_start, "Pos=%f,%f", &x, &y) == 2) + settings->Pos = ImVec2(x, y); + else if (sscanf(line_start, "Size=%f,%f", &x, &y) == 2) + settings->Size = ImMax(ImVec2(x, y), g.Style.WindowMinSize); + else if (sscanf(line_start, "Collapsed=%d", &i) == 1) + settings->Collapsed = (i != 0); + } + + line_start = line_end+1; + } + + ImGui::MemFree(file_data); +} + +static void SaveSettings() +{ + ImGuiState& g = *GImGui; + const char* filename = g.IO.IniFilename; + if (!filename) + return; + + // Gather data from windows that were active during this session + for (size_t i = 0; i != g.Windows.size(); i++) + { + ImGuiWindow* window = g.Windows[i]; + if (window->Flags & ImGuiWindowFlags_NoSavedSettings) + continue; + ImGuiIniData* settings = FindWindowSettings(window->Name); + settings->Pos = window->Pos; + settings->Size = window->SizeFull; + settings->Collapsed = window->Collapsed; + } + + // Write .ini file + // If a window wasn't opened in this session we preserve its settings + FILE* f = fopen(filename, "wt"); + if (!f) + return; + for (size_t i = 0; i != g.Settings.size(); i++) + { + const ImGuiIniData* settings = g.Settings[i]; + if (settings->Pos.x == FLT_MAX) + continue; + const char* name = settings->Name; + if (const char* p = strstr(name, "###")) // Skip to the "###" marker if any. We don't skip past to match the behavior of GetID() + name = p; + fprintf(f, "[%s]\n", name); + fprintf(f, "Pos=%d,%d\n", (int)settings->Pos.x, (int)settings->Pos.y); + fprintf(f, "Size=%d,%d\n", (int)settings->Size.x, (int)settings->Size.y); + fprintf(f, "Collapsed=%d\n", settings->Collapsed); + fprintf(f, "\n"); + } + + fclose(f); +} + +static void MarkSettingsDirty() +{ + ImGuiState& g = *GImGui; + + if (g.SettingsDirtyTimer <= 0.0f) + g.SettingsDirtyTimer = g.IO.IniSavingRate; +} + +const char* ImGui::GetVersion() +{ + return IMGUI_VERSION; +} + +// Internal state access - if you want to share ImGui state between modules (e.g. DLL) or allocate it yourself +// Note that we still point to some static data and members (such as GFontAtlas), so the state instance you end up using will point to the static data within its module +void* ImGui::GetInternalState() +{ + return GImGui; +} + +size_t ImGui::GetInternalStateSize() +{ + return sizeof(ImGuiState); +} + +void ImGui::SetInternalState(void* state, bool construct) +{ + if (construct) + new (state) ImGuiState(); + + GImGui = (ImGuiState*)state; +} + +ImGuiIO& ImGui::GetIO() +{ + return GImGui->IO; +} + +ImGuiStyle& ImGui::GetStyle() +{ + return GImGui->Style; +} + +void ImGui::NewFrame() +{ + ImGuiState& g = *GImGui; + + // Check user data + IM_ASSERT(g.IO.DeltaTime > 0.0f); + IM_ASSERT(g.IO.DisplaySize.x >= 0.0f && g.IO.DisplaySize.y >= 0.0f); + IM_ASSERT(g.IO.RenderDrawListsFn != NULL); // Must be implemented + IM_ASSERT(g.IO.Fonts->Fonts.size() > 0); // Font Atlas not created. Did you call io.Fonts->GetTexDataAsRGBA32 / GetTexDataAsAlpha8 ? + IM_ASSERT(g.IO.Fonts->Fonts[0]->IsLoaded()); // Font Atlas not created. Did you call io.Fonts->GetTexDataAsRGBA32 / GetTexDataAsAlpha8 ? + + if (!g.Initialized) + { + // Initialize on first frame + g.LogClipboard = (ImGuiTextBuffer*)ImGui::MemAlloc(sizeof(ImGuiTextBuffer)); + new(g.LogClipboard) ImGuiTextBuffer(); + + IM_ASSERT(g.Settings.empty()); + LoadSettings(); + g.Initialized = true; + } + + SetFont(g.IO.Fonts->Fonts[0]); + + g.Time += g.IO.DeltaTime; + g.FrameCount += 1; + g.Tooltip[0] = '\0'; + + // Update inputs state + if (g.IO.MousePos.x < 0 && g.IO.MousePos.y < 0) + g.IO.MousePos = ImVec2(-9999.0f, -9999.0f); + if ((g.IO.MousePos.x < 0 && g.IO.MousePos.y < 0) || (g.IO.MousePosPrev.x < 0 && g.IO.MousePosPrev.y < 0)) // if mouse just appeared or disappeared (negative coordinate) we cancel out movement in MouseDelta + g.IO.MouseDelta = ImVec2(0.0f, 0.0f); + else + g.IO.MouseDelta = g.IO.MousePos - g.IO.MousePosPrev; + g.IO.MousePosPrev = g.IO.MousePos; + for (size_t i = 0; i < IM_ARRAYSIZE(g.IO.MouseDown); i++) + { + g.IO.MouseDownTime[i] = g.IO.MouseDown[i] ? (g.IO.MouseDownTime[i] < 0.0f ? 0.0f : g.IO.MouseDownTime[i] + g.IO.DeltaTime) : -1.0f; + g.IO.MouseClicked[i] = (g.IO.MouseDownTime[i] == 0.0f); + g.IO.MouseDoubleClicked[i] = false; + if (g.IO.MouseClicked[i]) + { + if (g.Time - g.IO.MouseClickedTime[i] < g.IO.MouseDoubleClickTime) + { + if (ImLengthSqr(g.IO.MousePos - g.IO.MouseClickedPos[i]) < g.IO.MouseDoubleClickMaxDist * g.IO.MouseDoubleClickMaxDist) + g.IO.MouseDoubleClicked[i] = true; + g.IO.MouseClickedTime[i] = -FLT_MAX; // so the third click isn't turned into a double-click + } + else + { + g.IO.MouseClickedTime[i] = g.Time; + } + g.IO.MouseClickedPos[i] = g.IO.MousePos; + g.IO.MouseDragMaxDistanceSqr[i] = 0.0f; + } + else if (g.IO.MouseDown[i]) + { + g.IO.MouseDragMaxDistanceSqr[i] = ImMax(g.IO.MouseDragMaxDistanceSqr[i], ImLengthSqr(g.IO.MousePos - g.IO.MouseClickedPos[i])); + } + } + for (size_t i = 0; i < IM_ARRAYSIZE(g.IO.KeysDown); i++) + g.IO.KeysDownTime[i] = g.IO.KeysDown[i] ? (g.IO.KeysDownTime[i] < 0.0f ? 0.0f : g.IO.KeysDownTime[i] + g.IO.DeltaTime) : -1.0f; + + // Calculate frame-rate for the user, as a purely luxurious feature + g.FramerateSecPerFrameAccum += g.IO.DeltaTime - g.FramerateSecPerFrame[g.FramerateSecPerFrameIdx]; + g.FramerateSecPerFrame[g.FramerateSecPerFrameIdx] = g.IO.DeltaTime; + g.FramerateSecPerFrameIdx = (g.FramerateSecPerFrameIdx + 1) % IM_ARRAYSIZE(g.FramerateSecPerFrame); + g.IO.Framerate = 1.0f / (g.FramerateSecPerFrameAccum / (float)IM_ARRAYSIZE(g.FramerateSecPerFrame)); + + // Clear reference to active widget if the widget isn't alive anymore + g.HoveredId = 0; + if (!g.ActiveIdIsAlive && g.ActiveIdPreviousFrame == g.ActiveId && g.ActiveId != 0) + SetActiveId(0); + g.ActiveIdPreviousFrame = g.ActiveId; + g.ActiveIdIsAlive = false; + g.ActiveIdIsJustActivated = false; + if (!g.ActiveId) + g.MovedWindow = NULL; + + // Delay saving settings so we don't spam disk too much + if (g.SettingsDirtyTimer > 0.0f) + { + g.SettingsDirtyTimer -= g.IO.DeltaTime; + if (g.SettingsDirtyTimer <= 0.0f) + SaveSettings(); + } + + // Find the window we are hovering. Child windows can extend beyond the limit of their parent so we need to derive HoveredRootWindow from HoveredWindow + g.HoveredWindow = FindHoveredWindow(g.IO.MousePos, false); + if (g.HoveredWindow && (g.HoveredWindow->Flags & ImGuiWindowFlags_ChildWindow)) + g.HoveredRootWindow = g.HoveredWindow->RootWindow; + else + g.HoveredRootWindow = FindHoveredWindow(g.IO.MousePos, true); + + // Are we using inputs? Tell user so they can capture/discard the inputs away from the rest of their application. + // When clicking outside of a window we assume the click is owned by the application and won't request capture. + int mouse_earliest_button_down = -1; + for (int i = 0; i < IM_ARRAYSIZE(g.IO.MouseDown); i++) + { + if (g.IO.MouseClicked[i]) + g.IO.MouseDownOwned[i] = (g.HoveredWindow != NULL); + if (g.IO.MouseDown[i]) + if (mouse_earliest_button_down == -1 || g.IO.MouseClickedTime[mouse_earliest_button_down] > g.IO.MouseClickedTime[i]) + mouse_earliest_button_down = i; + } + bool mouse_owned_by_application = mouse_earliest_button_down != -1 && !g.IO.MouseDownOwned[mouse_earliest_button_down]; + g.IO.WantCaptureMouse = (!mouse_owned_by_application && g.HoveredWindow != NULL) || (g.ActiveId != 0); + g.IO.WantCaptureKeyboard = (g.ActiveId != 0); + g.MouseCursor = ImGuiMouseCursor_Arrow; + + // If mouse was first clicked outside of ImGui bounds we also cancel out hovering. + if (mouse_owned_by_application) + g.HoveredWindow = g.HoveredRootWindow = NULL; + + // Scale & Scrolling + if (g.HoveredWindow && g.IO.MouseWheel != 0.0f) + { + ImGuiWindow* window = g.HoveredWindow; + if (g.IO.KeyCtrl) + { + if (g.IO.FontAllowUserScaling) + { + // Zoom / Scale window + float new_font_scale = ImClamp(window->FontWindowScale + g.IO.MouseWheel * 0.10f, 0.50f, 2.50f); + float scale = new_font_scale / window->FontWindowScale; + window->FontWindowScale = new_font_scale; + + const ImVec2 offset = window->Size * (1.0f - scale) * (g.IO.MousePos - window->Pos) / window->Size; + window->Pos += offset; + window->PosFloat += offset; + window->Size *= scale; + window->SizeFull *= scale; + } + } + else + { + // Scroll + if (!(window->Flags & ImGuiWindowFlags_NoScrollWithMouse)) + { + const int scroll_lines = (window->Flags & ImGuiWindowFlags_ComboBox) ? 3 : 5; + window->NextScrollY -= g.IO.MouseWheel * window->CalcFontSize() * scroll_lines; + } + } + } + + // Pressing TAB activate widget focus + // NB: Don't discard FocusedWindow if it isn't active, so that a window that go on/off programatically won't lose its keyboard focus. + if (g.ActiveId == 0 && g.FocusedWindow != NULL && g.FocusedWindow->Visible && IsKeyPressedMap(ImGuiKey_Tab, false)) + { + g.FocusedWindow->FocusIdxTabRequestNext = 0; + } + + // Mark all windows as not visible + for (size_t i = 0; i != g.Windows.size(); i++) + { + ImGuiWindow* window = g.Windows[i]; + window->WasVisible = window->Visible; + window->Visible = false; + window->Accessed = false; + } + + // No window should be open at the beginning of the frame. + // But in order to allow the user to call NewFrame() multiple times without calling Render(), we are doing an explicit clear. + g.CurrentWindowStack.resize(0); + + // Create implicit window - we will only render it if the user has added something to it. + ImGui::SetNextWindowSize(ImVec2(400,400), ImGuiSetCond_FirstUseEver); + ImGui::Begin("Debug"); +} + +// NB: behavior of ImGui after Shutdown() is not tested/guaranteed at the moment. This function is merely here to free heap allocations. +void ImGui::Shutdown() +{ + ImGuiState& g = *GImGui; + if (!g.Initialized) + return; + + SaveSettings(); + + for (size_t i = 0; i < g.Windows.size(); i++) + { + g.Windows[i]->~ImGuiWindow(); + ImGui::MemFree(g.Windows[i]); + } + g.Windows.clear(); + g.WindowsSortBuffer.clear(); + g.CurrentWindowStack.clear(); + g.FocusedWindow = NULL; + g.HoveredWindow = NULL; + g.HoveredRootWindow = NULL; + for (size_t i = 0; i < g.Settings.size(); i++) + { + g.Settings[i]->~ImGuiIniData(); + ImGui::MemFree(g.Settings[i]); + } + g.Settings.clear(); + g.ColorModifiers.clear(); + g.StyleModifiers.clear(); + g.FontStack.clear(); + for (size_t i = 0; i < IM_ARRAYSIZE(g.RenderDrawLists); i++) + g.RenderDrawLists[i].clear(); + g.MouseCursorDrawList.ClearFreeMemory(); + g.ColorEditModeStorage.Clear(); + if (g.PrivateClipboard) + { + ImGui::MemFree(g.PrivateClipboard); + g.PrivateClipboard = NULL; + } + + if (g.LogFile && g.LogFile != stdout) + { + fclose(g.LogFile); + g.LogFile = NULL; + } + if (g.LogClipboard) + { + g.LogClipboard->~ImGuiTextBuffer(); + ImGui::MemFree(g.LogClipboard); + } + + g.IO.Fonts->Clear(); + + g.Initialized = false; +} + +// FIXME: Add a more explicit sort order in the window structure. +static int ChildWindowComparer(const void* lhs, const void* rhs) +{ + const ImGuiWindow* a = *(const ImGuiWindow**)lhs; + const ImGuiWindow* b = *(const ImGuiWindow**)rhs; + if (int d = (a->Flags & ImGuiWindowFlags_Popup) - (b->Flags & ImGuiWindowFlags_Popup)) + return d; + if (int d = (a->Flags & ImGuiWindowFlags_Tooltip) - (b->Flags & ImGuiWindowFlags_Tooltip)) + return d; + if (int d = (a->Flags & ImGuiWindowFlags_ComboBox) - (b->Flags & ImGuiWindowFlags_ComboBox)) + return d; + return 0; +} + +static void AddWindowToSortedBuffer(ImVector& out_sorted_windows, ImGuiWindow* window) +{ + out_sorted_windows.push_back(window); + if (window->Visible) + { + const size_t count = window->DC.ChildWindows.size(); + if (count > 1) + qsort(window->DC.ChildWindows.begin(), count, sizeof(ImGuiWindow*), ChildWindowComparer); + for (size_t i = 0; i < count; i++) + { + ImGuiWindow* child = window->DC.ChildWindows[i]; + if (child->Visible) + AddWindowToSortedBuffer(out_sorted_windows, child); + } + } +} + +static void PushClipRect(const ImVec4& clip_rect, bool clipped = true) +{ + ImGuiWindow* window = GetCurrentWindow(); + + ImVec4 cr = clip_rect; + if (clipped && !window->ClipRectStack.empty()) + { + // Clip with existing clip rect + const ImVec4 cur_cr = window->ClipRectStack.back(); + cr = ImVec4(ImMax(cr.x, cur_cr.x), ImMax(cr.y, cur_cr.y), ImMin(cr.z, cur_cr.z), ImMin(cr.w, cur_cr.w)); + } + cr.z = ImMax(cr.x, cr.z); + cr.w = ImMax(cr.y, cr.w); + + IM_ASSERT(cr.x <= cr.z && cr.y <= cr.w); + window->ClipRectStack.push_back(cr); + window->DrawList->PushClipRect(cr); +} + +static void PopClipRect() +{ + ImGuiWindow* window = GetCurrentWindow(); + window->ClipRectStack.pop_back(); + window->DrawList->PopClipRect(); +} + +void ImGui::Render() +{ + ImGuiState& g = *GImGui; + IM_ASSERT(g.Initialized); // Forgot to call ImGui::NewFrame() + + const bool first_render_of_the_frame = (g.FrameCountRendered != g.FrameCount); + g.FrameCountRendered = g.FrameCount; + + if (first_render_of_the_frame) + { + // Hide implicit window if it hasn't been used + IM_ASSERT(g.CurrentWindowStack.size() == 1); // Mismatched Begin/End + if (g.CurrentWindow && !g.CurrentWindow->Accessed) + g.CurrentWindow->Visible = false; + ImGui::End(); + + if (g.ActiveId == 0 && g.HoveredId == 0 && g.IO.MouseClicked[0]) + { + if (g.HoveredRootWindow != NULL) + { + // Select window for move/focus when we're done with all our widgets (we use the root window ID here) + IM_ASSERT(g.MovedWindow == NULL); + g.MovedWindow = g.HoveredWindow; + SetActiveId(g.HoveredRootWindow->MoveID); + } + else if (g.FocusedWindow != NULL) + { + // Clicking on void disable focus + FocusWindow(NULL); + } + } + + // Sort the window list so that all child windows are after their parent + // We cannot do that on FocusWindow() because childs may not exist yet + g.WindowsSortBuffer.resize(0); + g.WindowsSortBuffer.reserve(g.Windows.size()); + for (size_t i = 0; i != g.Windows.size(); i++) + { + ImGuiWindow* window = g.Windows[i]; + if (window->Flags & ImGuiWindowFlags_ChildWindow) // if a child is visible its parent will add it + if (window->Visible) + continue; + AddWindowToSortedBuffer(g.WindowsSortBuffer, window); + } + IM_ASSERT(g.Windows.size() == g.WindowsSortBuffer.size()); // we done something wrong + g.Windows.swap(g.WindowsSortBuffer); + + // Clear data for next frame + g.IO.MouseWheel = 0.0f; + memset(g.IO.InputCharacters, 0, sizeof(g.IO.InputCharacters)); + } + + // Skip render altogether if alpha is 0.0 + // Note that vertex buffers have been created, so it is best practice that you don't call Begin/End in the first place. + if (g.Style.Alpha > 0.0f) + { + // Render tooltip + if (g.Tooltip[0]) + { + // Use a dummy window to render the tooltip + ImGui::BeginTooltip(); + ImGui::TextUnformatted(g.Tooltip); + ImGui::EndTooltip(); + } + + // Gather windows to render + g.IO.MetricsRenderVertices = 0; + for (size_t i = 0; i < IM_ARRAYSIZE(g.RenderDrawLists); i++) + g.RenderDrawLists[i].resize(0); + for (size_t i = 0; i != g.Windows.size(); i++) + { + ImGuiWindow* window = g.Windows[i]; + if (window->Visible && (window->Flags & (ImGuiWindowFlags_ChildWindow)) == 0) + { + // FIXME: Generalize this with a proper layering system so we can stack. + if (window->Flags & ImGuiWindowFlags_Popup) + AddWindowToRenderList(g.RenderDrawLists[1], window); + else if (window->Flags & ImGuiWindowFlags_Tooltip) + AddWindowToRenderList(g.RenderDrawLists[2], window); + else + AddWindowToRenderList(g.RenderDrawLists[0], window); + } + } + + // Flatten layers + size_t n = g.RenderDrawLists[0].size(); + size_t flattened_size = n; + for (size_t i = 1; i < IM_ARRAYSIZE(g.RenderDrawLists); i++) + flattened_size += g.RenderDrawLists[i].size(); + g.RenderDrawLists[0].resize(flattened_size); + for (size_t i = 1; i < IM_ARRAYSIZE(g.RenderDrawLists); i++) + { + ImVector& layer = g.RenderDrawLists[i]; + if (!layer.empty()) + { + memcpy(&g.RenderDrawLists[0][n], &layer[0], layer.size() * sizeof(ImDrawList*)); + n += layer.size(); + } + } + + if (g.IO.MouseDrawCursor) + { + const ImGuiMouseCursorData& cursor_data = g.MouseCursorData[g.MouseCursor]; + const ImVec2 pos = g.IO.MousePos - cursor_data.Offset; + const ImVec2 size = cursor_data.Size; + const ImTextureID tex_id = g.IO.Fonts->TexID; + g.MouseCursorDrawList.Clear(); + g.MouseCursorDrawList.PushTextureID(tex_id); + g.MouseCursorDrawList.AddImage(tex_id, pos+ImVec2(1,0), pos+ImVec2(1,0) + size, cursor_data.TexUvMin[1], cursor_data.TexUvMax[1], 0x30000000); // Shadow + g.MouseCursorDrawList.AddImage(tex_id, pos+ImVec2(2,0), pos+ImVec2(2,0) + size, cursor_data.TexUvMin[1], cursor_data.TexUvMax[1], 0x30000000); // Shadow + g.MouseCursorDrawList.AddImage(tex_id, pos, pos + size, cursor_data.TexUvMin[1], cursor_data.TexUvMax[1], 0xFF000000); // Black border + g.MouseCursorDrawList.AddImage(tex_id, pos, pos + size, cursor_data.TexUvMin[0], cursor_data.TexUvMax[0], 0xFFFFFFFF); // White fill + g.MouseCursorDrawList.PopTextureID(); + AddDrawListToRenderList(g.RenderDrawLists[0], &g.MouseCursorDrawList); + } + + // Render + if (!g.RenderDrawLists[0].empty()) + g.IO.RenderDrawListsFn(&g.RenderDrawLists[0][0], (int)g.RenderDrawLists[0].size()); + } +} + +// Find the optional ## from which we stop displaying text. +static const char* FindTextDisplayEnd(const char* text, const char* text_end = NULL) +{ + const char* text_display_end = text; + if (!text_end) + text_end = (const char*)-1; + + ImGuiState& g = *GImGui; + if (g.DisableHideTextAfterDoubleHash > 0) + { + while (text_display_end < text_end && *text_display_end != '\0') + text_display_end++; + } + else + { + while (text_display_end < text_end && *text_display_end != '\0' && (text_display_end[0] != '#' || text_display_end[1] != '#')) + text_display_end++; + } + return text_display_end; +} + +// Pass text data straight to log (without being displayed) +void ImGui::LogText(const char* fmt, ...) +{ + ImGuiState& g = *GImGui; + if (!g.LogEnabled) + return; + + va_list args; + va_start(args, fmt); + if (g.LogFile) + { + vfprintf(g.LogFile, fmt, args); + } + else + { + g.LogClipboard->appendv(fmt, args); + } + va_end(args); +} + +// Internal version that takes a position to decide on newline placement and pad items according to their depth. +// We split text into individual lines to add current tree level padding +static void LogText(const ImVec2& ref_pos, const char* text, const char* text_end) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + + if (!text_end) + text_end = FindTextDisplayEnd(text, text_end); + + const bool log_new_line = ref_pos.y > window->DC.LogLinePosY+1; + window->DC.LogLinePosY = ref_pos.y; + + const char* text_remaining = text; + if (g.LogStartDepth > window->DC.TreeDepth) // Re-adjust padding if we have popped out of our starting depth + g.LogStartDepth = window->DC.TreeDepth; + const int tree_depth = (window->DC.TreeDepth - g.LogStartDepth); + for (;;) + { + // Split the string. Each new line (after a '\n') is followed by spacing corresponding to the current depth of our log entry. + const char* line_end = text_remaining; + while (line_end < text_end) + if (*line_end == '\n') + break; + else + line_end++; + if (line_end >= text_end) + line_end = NULL; + + const bool is_first_line = (text == text_remaining); + bool is_last_line = false; + if (line_end == NULL) + { + is_last_line = true; + line_end = text_end; + } + if (line_end != NULL && !(is_last_line && (line_end - text_remaining)==0)) + { + const int char_count = (int)(line_end - text_remaining); + if (log_new_line || !is_first_line) + ImGui::LogText(STR_NEWLINE "%*s%.*s", tree_depth*4, "", char_count, text_remaining); + else + ImGui::LogText(" %.*s", char_count, text_remaining); + } + + if (is_last_line) + break; + text_remaining = line_end + 1; + } +} + +static float CalcWrapWidthForPos(const ImVec2& pos, float wrap_pos_x) +{ + if (wrap_pos_x < 0.0f) + return 0.0f; + + ImGuiWindow* window = GetCurrentWindow(); + if (wrap_pos_x == 0.0f) + wrap_pos_x = ImGui::GetContentRegionMax().x; + if (wrap_pos_x > 0.0f) + wrap_pos_x += window->Pos.x; // wrap_pos_x is provided is window local space + + const float wrap_width = wrap_pos_x > 0.0f ? ImMax(wrap_pos_x - pos.x, 0.00001f) : 0.0f; + return wrap_width; +} + +// Internal ImGui functions to render text +// RenderText***() functions calls ImDrawList::AddText() calls ImBitmapFont::RenderText() +static void RenderText(ImVec2 pos, const char* text, const char* text_end, bool hide_text_after_hash) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + + // Hide anything after a '##' string + const char* text_display_end; + if (hide_text_after_hash) + { + text_display_end = FindTextDisplayEnd(text, text_end); + } + else + { + if (!text_end) + text_end = text + strlen(text); // FIXME-OPT + text_display_end = text_end; + } + + const int text_len = (int)(text_display_end - text); + if (text_len > 0) + { + // Render + window->DrawList->AddText(g.Font, g.FontSize, pos, window->Color(ImGuiCol_Text), text, text_display_end); + + // Log as text + if (g.LogEnabled) + LogText(pos, text, text_display_end); + } +} + +static void RenderTextWrapped(ImVec2 pos, const char* text, const char* text_end, float wrap_width) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + + if (!text_end) + text_end = text + strlen(text); // FIXME-OPT + + const int text_len = (int)(text_end - text); + if (text_len > 0) + { + // Render + window->DrawList->AddText(g.Font, g.FontSize, pos, window->Color(ImGuiCol_Text), text, text_end, wrap_width); + + // Log as text + if (g.LogEnabled) + LogText(pos, text, text_end); + } +} + +static void RenderTextClipped(ImVec2 pos, const char* text, const char* text_end, const ImVec2* text_size_if_known, const ImVec2& clip_max) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + + // Hide anything after a '##' string + const char* text_display_end = FindTextDisplayEnd(text, text_end); + const int text_len = (int)(text_display_end - text); + if (text_len > 0) + { + const ImVec2 text_size = text_size_if_known ? *text_size_if_known : ImGui::CalcTextSize(text, text_display_end, false, 0.0f); + + // Perform CPU side clipping for single clipped element to avoid using scissor state + const bool need_clipping = (pos.x + text_size.x >= clip_max.x) || (pos.y + text_size.y >= clip_max.y); + + // Render + window->DrawList->AddText(g.Font, g.FontSize, pos, window->Color(ImGuiCol_Text), text, text_display_end, 0.0f, need_clipping ? &clip_max : NULL); + + // Log as text + if (g.LogEnabled) + LogText(pos, text, text_display_end); + } +} + +// Render a rectangle shaped with optional rounding and borders +static void RenderFrame(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, bool border, float rounding) +{ + ImGuiWindow* window = GetCurrentWindow(); + + window->DrawList->AddRectFilled(p_min, p_max, fill_col, rounding); + if (border && (window->Flags & ImGuiWindowFlags_ShowBorders)) + { + // FIXME: This is the best I've found that works on multiple renderer/back ends. Bit dodgy. + window->DrawList->AddRect(p_min+ImVec2(1.5f,1.5f), p_max+ImVec2(1,1), window->Color(ImGuiCol_BorderShadow), rounding); + window->DrawList->AddRect(p_min+ImVec2(0.5f,0.5f), p_max+ImVec2(0,0), window->Color(ImGuiCol_Border), rounding); + } +} + +// Render a triangle to denote expanded/collapsed state +static void RenderCollapseTriangle(ImVec2 p_min, bool opened, float scale, bool shadow) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + + const float h = g.FontSize * 1.00f; + const float r = h * 0.40f * scale; + ImVec2 center = p_min + ImVec2(h*0.50f, h*0.50f*scale); + + ImVec2 a, b, c; + if (opened) + { + center.y -= r*0.25f; + a = center + ImVec2(0,1)*r; + b = center + ImVec2(-0.866f,-0.5f)*r; + c = center + ImVec2(0.866f,-0.5f)*r; + } + else + { + a = center + ImVec2(1,0)*r; + b = center + ImVec2(-0.500f,0.866f)*r; + c = center + ImVec2(-0.500f,-0.866f)*r; + } + + if (shadow && (window->Flags & ImGuiWindowFlags_ShowBorders) != 0) + window->DrawList->AddTriangleFilled(a+ImVec2(2,2), b+ImVec2(2,2), c+ImVec2(2,2), window->Color(ImGuiCol_BorderShadow)); + window->DrawList->AddTriangleFilled(a, b, c, window->Color(ImGuiCol_Text)); +} + +// Calculate text size. Text can be multi-line. Optionally ignore text after a ## marker. +// CalcTextSize("") should return ImVec2(0.0f, GImGui->FontSize) +ImVec2 ImGui::CalcTextSize(const char* text, const char* text_end, bool hide_text_after_double_hash, float wrap_width) +{ + ImGuiState& g = *GImGui; + + const char* text_display_end; + if (hide_text_after_double_hash) + text_display_end = FindTextDisplayEnd(text, text_end); // Hide anything after a '##' string + else + text_display_end = text_end; + + ImFont* font = g.Font; + const float font_size = g.FontSize; + ImVec2 text_size = font->CalcTextSizeA(font_size, FLT_MAX, wrap_width, text, text_display_end, NULL); + + // Cancel out character spacing for the last character of a line (it is baked into glyph->XAdvance field) + const float font_scale = font_size / font->FontSize; + const float character_spacing_x = 1.0f * font_scale; + if (text_size.x > 0.0f) + text_size.x -= character_spacing_x; + + return text_size; +} + +// Helper to calculate coarse clipping of large list of evenly sized items. +// If you are displaying thousands of items and you have a random access to the list, you can perform clipping yourself to save on CPU. +// { +// float item_height = ImGui::GetTextLineHeightWithSpacing(); +// int display_start, display_end; +// ImGui::CalcListClipping(count, item_height, &display_start, &display_end); // calculate how many to clip/display +// ImGui::SetCursorPosY(ImGui::GetCursorPosY() + (display_start) * item_height); // advance cursor +// for (int i = display_start; i < display_end; i++) // display only visible items +// // TODO: display visible item +// ImGui::SetCursorPosY(ImGui::GetCursorPosY() + (count - display_end) * item_height); // advance cursor +// } +void ImGui::CalcListClipping(int items_count, float items_height, int* out_items_display_start, int* out_items_display_end) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + + if (g.LogEnabled) + { + // If logging is active, do not perform any clipping + *out_items_display_start = 0; + *out_items_display_end = items_count; + return; + } + + const ImVec2 pos = window->DC.CursorPos; + const ImVec4 clip_rect = window->ClipRectStack.back(); + const float clip_y1 = clip_rect.y; + const float clip_y2 = clip_rect.w; + + int start = (int)((clip_y1 - pos.y) / items_height); + int end = (int)((clip_y2 - pos.y) / items_height); + start = ImClamp(start, 0, items_count); + end = ImClamp(end + 1, start, items_count); + + *out_items_display_start = start; + *out_items_display_end = end; +} + +// Find window given position, search front-to-back +static ImGuiWindow* FindHoveredWindow(ImVec2 pos, bool excluding_childs) +{ + ImGuiState& g = *GImGui; + for (int i = (int)g.Windows.size()-1; i >= 0; i--) + { + ImGuiWindow* window = g.Windows[(size_t)i]; + if (!window->Visible) + continue; + if (excluding_childs && (window->Flags & ImGuiWindowFlags_ChildWindow) != 0) + continue; + + // Using the clipped AABB so a child window will typically be clipped by its parent. + ImRect bb(window->ClippedRect.Min - g.Style.TouchExtraPadding, window->ClippedRect.Max + g.Style.TouchExtraPadding); + if (bb.Contains(pos)) + return window; + } + return NULL; +} + +// Test if mouse cursor is hovering given rectangle +// NB- Rectangle is clipped by our current clip setting +// NB- Expand the rectangle to be generous on imprecise inputs systems (g.Style.TouchExtraPadding) +static bool IsMouseHoveringRect(const ImRect& rect) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + + // Clip + ImRect rect_clipped = rect; + if (!window->ClipRectStack.empty()) + { + const ImVec4 clip_rect = window->ClipRectStack.back(); + rect_clipped.Clip(ImRect(ImVec2(clip_rect.x, clip_rect.y), ImVec2(clip_rect.z, clip_rect.w))); + } + + // Expand for touch input + const ImRect rect_for_touch(rect_clipped.Min - g.Style.TouchExtraPadding, rect_clipped.Max + g.Style.TouchExtraPadding); + return rect_for_touch.Contains(g.IO.MousePos); +} + +bool ImGui::IsMouseHoveringRect(const ImVec2& rect_min, const ImVec2& rect_max) +{ + return IsMouseHoveringRect(ImRect(rect_min, rect_max)); +} + +bool ImGui::IsMouseHoveringWindow() +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + return g.HoveredWindow == window; +} + +bool ImGui::IsMouseHoveringAnyWindow() +{ + ImGuiState& g = *GImGui; + return g.HoveredWindow != NULL; +} + +bool ImGui::IsPosHoveringAnyWindow(const ImVec2& pos) +{ + return FindHoveredWindow(pos, false) != NULL; +} + +static bool IsKeyPressedMap(ImGuiKey key, bool repeat) +{ + ImGuiState& g = *GImGui; + const int key_index = g.IO.KeyMap[key]; + return ImGui::IsKeyPressed(key_index, repeat); +} + +bool ImGui::IsKeyPressed(int key_index, bool repeat) +{ + ImGuiState& g = *GImGui; + IM_ASSERT(key_index >= 0 && key_index < IM_ARRAYSIZE(g.IO.KeysDown)); + const float t = g.IO.KeysDownTime[key_index]; + if (t == 0.0f) + return true; + + // FIXME: Repeat rate should be provided elsewhere? + const float KEY_REPEAT_DELAY = 0.250f; + const float KEY_REPEAT_RATE = 0.020f; + if (repeat && t > KEY_REPEAT_DELAY) + if ((fmodf(t - KEY_REPEAT_DELAY, KEY_REPEAT_RATE) > KEY_REPEAT_RATE*0.5f) != (fmodf(t - KEY_REPEAT_DELAY - g.IO.DeltaTime, KEY_REPEAT_RATE) > KEY_REPEAT_RATE*0.5f)) + return true; + + return false; +} + +bool ImGui::IsMouseClicked(int button, bool repeat) +{ + ImGuiState& g = *GImGui; + IM_ASSERT(button >= 0 && button < IM_ARRAYSIZE(g.IO.MouseDown)); + const float t = g.IO.MouseDownTime[button]; + if (t == 0.0f) + return true; + + // FIXME: Repeat rate should be provided elsewhere? + const float MOUSE_REPEAT_DELAY = 0.250f; + const float MOUSE_REPEAT_RATE = 0.020f; + if (repeat && t > MOUSE_REPEAT_DELAY) + if ((fmodf(t - MOUSE_REPEAT_DELAY, MOUSE_REPEAT_RATE) > MOUSE_REPEAT_RATE*0.5f) != (fmodf(t - MOUSE_REPEAT_DELAY - g.IO.DeltaTime, MOUSE_REPEAT_RATE) > MOUSE_REPEAT_RATE*0.5f)) + return true; + + return false; +} + +bool ImGui::IsMouseDoubleClicked(int button) +{ + ImGuiState& g = *GImGui; + IM_ASSERT(button >= 0 && button < IM_ARRAYSIZE(g.IO.MouseDown)); + return g.IO.MouseDoubleClicked[button]; +} + +bool ImGui::IsMouseDragging(int button, float lock_threshold) +{ + ImGuiState& g = *GImGui; + IM_ASSERT(button >= 0 && button < IM_ARRAYSIZE(g.IO.MouseDown)); + if (lock_threshold < 0.0f) + lock_threshold = g.IO.MouseDragThreshold; + return g.IO.MouseDragMaxDistanceSqr[button] >= lock_threshold * lock_threshold; +} + +ImVec2 ImGui::GetMousePos() +{ + return GImGui->IO.MousePos; +} + +ImVec2 ImGui::GetMouseDragDelta(int button, float lock_threshold) +{ + ImGuiState& g = *GImGui; + IM_ASSERT(button >= 0 && button < IM_ARRAYSIZE(g.IO.MouseDown)); + if (lock_threshold < 0.0f) + lock_threshold = g.IO.MouseDragThreshold; + if (g.IO.MouseDown[button]) + if (g.IO.MouseDragMaxDistanceSqr[button] >= lock_threshold * lock_threshold) + return g.IO.MousePos - g.IO.MouseClickedPos[button]; // Assume we can only get active with left-mouse button (at the moment). + return ImVec2(0.0f, 0.0f); +} + +void ImGui::ResetMouseDragDelta(int button) +{ + ImGuiState& g = *GImGui; + IM_ASSERT(button >= 0 && button < IM_ARRAYSIZE(g.IO.MouseDown)); + // NB: We don't need to reset g.IO.MouseDragMaxDistanceSqr + g.IO.MouseClickedPos[button] = g.IO.MousePos; +} + +ImGuiMouseCursor ImGui::GetMouseCursor() +{ + return GImGui->MouseCursor; +} + +void ImGui::SetMouseCursor(ImGuiMouseCursor cursor_type) +{ + GImGui->MouseCursor = cursor_type; +} + +bool ImGui::IsItemHovered() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->DC.LastItemHoveredAndUsable; +} + +bool ImGui::IsItemHoveredRect() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->DC.LastItemHoveredRect; +} + +bool ImGui::IsItemActive() +{ + ImGuiState& g = *GImGui; + if (g.ActiveId) + { + ImGuiWindow* window = GetCurrentWindow(); + return g.ActiveId == window->DC.LastItemID; + } + return false; +} + +bool ImGui::IsAnyItemActive() +{ + ImGuiState& g = *GImGui; + return g.ActiveId != 0; +} + +bool ImGui::IsItemVisible() +{ + ImGuiWindow* window = GetCurrentWindow(); + ImRect r(window->ClipRectStack.back()); + return r.Overlaps(window->DC.LastItemRect); +} + +ImVec2 ImGui::GetItemRectMin() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->DC.LastItemRect.Min; +} + +ImVec2 ImGui::GetItemRectMax() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->DC.LastItemRect.Max; +} + +ImVec2 ImGui::GetItemRectSize() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->DC.LastItemRect.GetSize(); +} + +ImVec2 ImGui::CalcItemRectClosestPoint(const ImVec2& pos, bool on_edge, float outward) +{ + ImGuiWindow* window = GetCurrentWindow(); + ImRect rect = window->DC.LastItemRect; + rect.Expand(outward); + return rect.GetClosestPoint(pos, on_edge); +} + +// Tooltip is stored and turned into a BeginTooltip()/EndTooltip() sequence at the end of the frame. Each call override previous value. +void ImGui::SetTooltipV(const char* fmt, va_list args) +{ + ImGuiState& g = *GImGui; + ImFormatStringV(g.Tooltip, IM_ARRAYSIZE(g.Tooltip), fmt, args); +} + +void ImGui::SetTooltip(const char* fmt, ...) +{ + va_list args; + va_start(args, fmt); + SetTooltipV(fmt, args); + va_end(args); +} + +float ImGui::GetTime() +{ + return GImGui->Time; +} + +int ImGui::GetFrameCount() +{ + return GImGui->FrameCount; +} + +void ImGui::BeginTooltip() +{ + ImGuiState& g = *GImGui; + ImGuiWindowFlags flags = ImGuiWindowFlags_Tooltip|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_AlwaysAutoResize; + ImGui::Begin("##Tooltip", NULL, ImVec2(0,0), g.Style.Colors[ImGuiCol_TooltipBg].w, flags); +} + +void ImGui::EndTooltip() +{ + IM_ASSERT(GetCurrentWindow()->Flags & ImGuiWindowFlags_Tooltip); + ImGui::End(); +} + +void ImGui::BeginPopup(bool* p_opened) +{ + IM_ASSERT(p_opened != NULL); // Must provide a bool at the moment + + ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f); + ImGuiWindowFlags flags = ImGuiWindowFlags_Popup|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_AlwaysAutoResize; + ImGui::Begin("##Popup", p_opened, flags); +} + +void ImGui::EndPopup() +{ + IM_ASSERT(GetCurrentWindow()->Flags & ImGuiWindowFlags_Popup); + ImGui::End(); + ImGui::PopStyleVar(); +} + +bool ImGui::BeginChild(const char* str_id, const ImVec2& size_arg, bool border, ImGuiWindowFlags extra_flags) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + + ImGuiWindowFlags flags = ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_ChildWindow; + + const ImVec2 content_max = window->Pos + ImGui::GetContentRegionMax(); + const ImVec2 cursor_pos = window->Pos + ImGui::GetCursorPos(); + ImVec2 size = size_arg; + if (size.x <= 0.0f) + { + if (size.x == 0.0f) + flags |= ImGuiWindowFlags_ChildWindowAutoFitX; + size.x = ImMax(content_max.x - cursor_pos.x, g.Style.WindowMinSize.x) - fabsf(size.x); + } + if (size.y <= 0.0f) + { + if (size.y == 0.0f) + flags |= ImGuiWindowFlags_ChildWindowAutoFitY; + size.y = ImMax(content_max.y - cursor_pos.y, g.Style.WindowMinSize.y) - fabsf(size.y); + } + if (border) + flags |= ImGuiWindowFlags_ShowBorders; + flags |= extra_flags; + + char title[256]; + ImFormatString(title, IM_ARRAYSIZE(title), "%s.%s", window->Name, str_id); + + const float alpha = 1.0f; + bool ret = ImGui::Begin(title, NULL, size, alpha, flags); + + if (!(window->Flags & ImGuiWindowFlags_ShowBorders)) + g.CurrentWindow->Flags &= ~ImGuiWindowFlags_ShowBorders; + + return ret; +} + +bool ImGui::BeginChild(ImGuiID id, const ImVec2& size, bool border, ImGuiWindowFlags extra_flags) +{ + char str_id[32]; + ImFormatString(str_id, IM_ARRAYSIZE(str_id), "child_%x", id); + bool ret = ImGui::BeginChild(str_id, size, border, extra_flags); + return ret; +} + +void ImGui::EndChild() +{ + ImGuiWindow* window = GetCurrentWindow(); + + IM_ASSERT(window->Flags & ImGuiWindowFlags_ChildWindow); + if (window->Flags & ImGuiWindowFlags_ComboBox) + { + ImGui::End(); + } + else + { + // When using auto-filling child window, we don't provide full width/height to ItemSize so that it doesn't feed back into automatic size-fitting. + ImGuiState& g = *GImGui; + ImVec2 sz = ImGui::GetWindowSize(); + if (window->Flags & ImGuiWindowFlags_ChildWindowAutoFitX) + sz.x = ImMax(g.Style.WindowMinSize.x, sz.x - g.Style.AutoFitPadding.x); + if (window->Flags & ImGuiWindowFlags_ChildWindowAutoFitY) + sz.y = ImMax(g.Style.WindowMinSize.y, sz.y - g.Style.AutoFitPadding.y); + + ImGui::End(); + + window = GetCurrentWindow(); + ImRect bb(window->DC.CursorPos, window->DC.CursorPos + sz); + ItemSize(sz); + ItemAdd(bb, NULL); + } +} + +// Helper to create a child window / scrolling region that looks like a normal widget frame. +void ImGui::BeginChildFrame(ImGuiID id, const ImVec2& size) +{ + ImGuiState& g = *GImGui; + const ImGuiStyle& style = g.Style; + ImGui::PushStyleColor(ImGuiCol_ChildWindowBg, style.Colors[ImGuiCol_FrameBg]); + ImGui::PushStyleVar(ImGuiStyleVar_ChildWindowRounding, style.FrameRounding); + ImGui::BeginChild(id, size); +} + +void ImGui::EndChildFrame() +{ + ImGui::EndChild(); + ImGui::PopStyleVar(); + ImGui::PopStyleColor(); +} + +static ImGuiWindow* FindWindowByName(const char* name) +{ + // FIXME-OPT: Store sorted hashes -> pointers. + ImGuiState& g = *GImGui; + ImGuiID id = ImHash(name, 0); + for (size_t i = 0; i < g.Windows.size(); i++) + if (g.Windows[i]->ID == id) + return g.Windows[i]; + return NULL; +} + +static ImGuiWindow* CreateNewWindow(const char* name, ImVec2 size, ImGuiWindowFlags flags) +{ + ImGuiState& g = *GImGui; + + // Create window the first time + ImGuiWindow* window = (ImGuiWindow*)ImGui::MemAlloc(sizeof(ImGuiWindow)); + new(window) ImGuiWindow(name); + window->Flags = flags; + + if (flags & ImGuiWindowFlags_NoSavedSettings) + { + // User can disable loading and saving of settings. Tooltip and child windows also don't store settings. + window->Size = window->SizeFull = size; + } + else + { + // Retrieve settings from .ini file + // Use SetWindowPos() or SetNextWindowPos() with the appropriate condition flag to change the initial position of a window. + window->PosFloat = ImVec2(60, 60); + window->Pos = ImVec2((float)(int)window->PosFloat.x, (float)(int)window->PosFloat.y); + + ImGuiIniData* settings = FindWindowSettings(name); + if (!settings) + { + settings = AddWindowSettings(name); + } + else + { + window->SetWindowPosAllowFlags &= ~ImGuiSetCond_FirstUseEver; + window->SetWindowSizeAllowFlags &= ~ImGuiSetCond_FirstUseEver; + window->SetWindowCollapsedAllowFlags &= ~ImGuiSetCond_FirstUseEver; + } + + if (settings->Pos.x != FLT_MAX) + { + window->PosFloat = settings->Pos; + window->Pos = ImVec2((float)(int)window->PosFloat.x, (float)(int)window->PosFloat.y); + window->Collapsed = settings->Collapsed; + } + + if (ImLengthSqr(settings->Size) > 0.00001f && !(flags & ImGuiWindowFlags_NoResize)) + size = settings->Size; + window->Size = window->SizeFull = size; + } + + if ((flags & ImGuiWindowFlags_AlwaysAutoResize) != 0) + { + window->AutoFitFrames = 2; + window->AutoFitOnlyGrows = false; + } + else if (ImLengthSqr(window->Size) < 0.00001f) + { + window->AutoFitFrames = 2; + window->AutoFitOnlyGrows = true; + } + + g.Windows.push_back(window); + return window; +} + +// Push a new ImGui window to add widgets to. +// - 'size' for a regular window denote the initial size for first-time creation (no saved data) and isn't that useful. Use SetNextWindowSize() prior to calling Begin() for more flexible window manipulation. +// - A default window called "Debug" is automatically stacked at the beginning of every frame so you can use widgets without explicitly calling a Begin/End pair. +// - Begin/End can be called multiple times during the frame with the same window name to append content. +// - The window name is used as a unique identifier to preserve window information across frames (and save rudimentary information to the .ini file). +// You can use the "##" or "###" markers to use the same label with different id, or same id with different label. See documentation at the top of this file. +// - Return false when window is collapsed, so you can early out in your code. You always need to call ImGui::End() even if false is returned. +// - Passing 'bool* p_opened' displays a Close button on the upper-right corner of the window, the pointed value will be set to false when the button is pressed. +// - Passing non-zero 'size' is roughly equivalent to calling SetNextWindowSize(size, ImGuiSetCond_FirstUseEver) prior to calling Begin(). +bool ImGui::Begin(const char* name, bool* p_opened, ImGuiWindowFlags flags) +{ + return ImGui::Begin(name, p_opened, ImVec2(0.f, 0.f), -1.0f, flags); +} + +bool ImGui::Begin(const char* name, bool* p_opened, const ImVec2& size_on_first_use, float bg_alpha, ImGuiWindowFlags flags) +{ + ImGuiState& g = *GImGui; + const ImGuiStyle& style = g.Style; + IM_ASSERT(g.Initialized); // Forgot to call ImGui::NewFrame() + IM_ASSERT(name != NULL); // Must pass a name + + // Find or create + bool window_is_new = false; + ImGuiWindow* window = FindWindowByName(name); + if (!window) + { + window = CreateNewWindow(name, size_on_first_use, flags); + window_is_new = true; + } + window->Flags = (ImGuiWindowFlags)flags; + + // Add to stack + g.CurrentWindowStack.push_back(window); + SetCurrentWindow(window); + + // Process SetNextWindow***() calls + bool window_pos_set_by_api = false; + if (g.SetNextWindowPosCond) + { + const ImVec2 backup_cursor_pos = window->DC.CursorPos; // FIXME: not sure of the exact reason of this anymore :( need to look into that. + ImGui::SetWindowPos(g.SetNextWindowPosVal, g.SetNextWindowPosCond); + window->DC.CursorPos = backup_cursor_pos; + window_pos_set_by_api = true; + g.SetNextWindowPosCond = 0; + } + if (g.SetNextWindowSizeCond) + { + ImGui::SetWindowSize(g.SetNextWindowSizeVal, g.SetNextWindowSizeCond); + g.SetNextWindowSizeCond = 0; + } + if (g.SetNextWindowCollapsedCond) + { + ImGui::SetWindowCollapsed(g.SetNextWindowCollapsedVal, g.SetNextWindowCollapsedCond); + g.SetNextWindowCollapsedCond = 0; + } + if (g.SetNextWindowFocus) + { + ImGui::SetWindowFocus(); + g.SetNextWindowFocus = false; + } + + // Find parent + ImGuiWindow* parent_window = (flags & ImGuiWindowFlags_ChildWindow) != 0 ? g.CurrentWindowStack[g.CurrentWindowStack.size()-2] : NULL; + + // Update known root window (if we are a child window, otherwise window == window->RootWindow) + size_t root_idx = g.CurrentWindowStack.size() - 1; + while (root_idx > 0) + { + if ((g.CurrentWindowStack[root_idx]->Flags & ImGuiWindowFlags_ChildWindow) == 0) + break; + root_idx--; + } + window->RootWindow = g.CurrentWindowStack[root_idx]; + + // Default alpha + if (bg_alpha < 0.0f) + bg_alpha = style.WindowFillAlphaDefault; + + // When reusing window again multiple times a frame, just append content (don't need to setup again) + const int current_frame = ImGui::GetFrameCount(); + const bool first_begin_of_the_frame = (window->LastFrameDrawn != current_frame); + if (first_begin_of_the_frame) + { + window->DrawList->Clear(); + window->Visible = true; + + // New windows appears in front + if (!(flags & ImGuiWindowFlags_ChildWindow) && !(flags & ImGuiWindowFlags_Tooltip)) + { + if (window->LastFrameDrawn < current_frame - 1) + { + FocusWindow(window); + + // Popup position themselves when they first appear + if (flags & ImGuiWindowFlags_Popup) + { + if (!window_pos_set_by_api) + window->PosFloat = g.IO.MousePos; + } + } + } + + window->LastFrameDrawn = current_frame; + window->ClipRectStack.resize(0); + + // Reset contents size for auto-fitting + window->SizeContents = window_is_new ? ImVec2(0.0f, 0.0f) : window->DC.CursorMaxPos - window->Pos; + window->SizeContents.y += window->ScrollY; + + if (flags & ImGuiWindowFlags_ChildWindow) + { + parent_window->DC.ChildWindows.push_back(window); + window->Pos = window->PosFloat = parent_window->DC.CursorPos; + window->SizeFull = size_on_first_use; + } + } + + // Setup texture + window->DrawList->PushTextureID(g.Font->ContainerAtlas->TexID); + + // Setup outer clipping rectangle + if ((flags & ImGuiWindowFlags_ChildWindow) && !(flags & ImGuiWindowFlags_ComboBox)) + PushClipRect(parent_window->ClipRectStack.back()); + else if (g.IO.DisplayVisibleMin.x != g.IO.DisplayVisibleMax.x && g.IO.DisplayVisibleMin.y != g.IO.DisplayVisibleMax.y) + PushClipRect(ImVec4(g.IO.DisplayVisibleMin.x, g.IO.DisplayVisibleMin.y, g.IO.DisplayVisibleMax.x, g.IO.DisplayVisibleMax.y)); + else + PushClipRect(ImVec4(0.0f, 0.0f, g.IO.DisplaySize.x, g.IO.DisplaySize.y)); + + // Setup and draw window + if (first_begin_of_the_frame) + { + // Reset ID stack + window->IDStack.resize(1); + + // Move window (at the beginning of the frame to avoid input lag or sheering). Only valid for root windows. + RegisterAliveId(window->MoveID); + if (g.ActiveId == window->MoveID) + { + if (g.IO.MouseDown[0]) + { + if (!(window->Flags & ImGuiWindowFlags_NoMove)) + { + window->PosFloat += g.IO.MouseDelta; + if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings)) + MarkSettingsDirty(); + } + IM_ASSERT(g.MovedWindow != NULL); + FocusWindow(g.MovedWindow); + } + else + { + SetActiveId(0); + g.MovedWindow = NULL; // Not strictly necessary but doing it for sanity. + } + } + + // Tooltips always follows mouse + if (!window_pos_set_by_api && (window->Flags & ImGuiWindowFlags_Tooltip) != 0) + { + window->PosFloat = g.IO.MousePos + ImVec2(32,16) - style.FramePadding*2; + } + + // Clamp into view + if (!(window->Flags & ImGuiWindowFlags_ChildWindow) && !(window->Flags & ImGuiWindowFlags_Tooltip)) + { + if (window->AutoFitFrames <= 0 && g.IO.DisplaySize.x > 0.0f && g.IO.DisplaySize.y > 0.0f) // Ignore zero-sized display explicitly to avoid losing positions if a window manager reports zero-sized window when initializing or minimizing. + { + ImVec2 clip_min = style.DisplaySafeAreaPadding; + ImVec2 clip_max = g.IO.DisplaySize - style.DisplaySafeAreaPadding; + window->PosFloat = ImMax(window->PosFloat + window->Size, clip_min) - window->Size; + window->PosFloat = ImMin(window->PosFloat, clip_max); + } + window->SizeFull = ImMax(window->SizeFull, style.WindowMinSize); + } + window->Pos = ImVec2((float)(int)window->PosFloat.x, (float)(int)window->PosFloat.y); + + // Default item width. Make it proportional to window size if window manually resizes + if (window->Size.x > 0.0f && !(window->Flags & ImGuiWindowFlags_Tooltip) && !(window->Flags & ImGuiWindowFlags_AlwaysAutoResize)) + window->ItemWidthDefault = (float)(int)(window->Size.x * 0.65f); + else + window->ItemWidthDefault = 200.0f; + + // Prepare for focus requests + if (window->FocusIdxAllRequestNext == IM_INT_MAX || window->FocusIdxAllCounter == -1) + window->FocusIdxAllRequestCurrent = IM_INT_MAX; + else + window->FocusIdxAllRequestCurrent = (window->FocusIdxAllRequestNext + (window->FocusIdxAllCounter+1)) % (window->FocusIdxAllCounter+1); + if (window->FocusIdxTabRequestNext == IM_INT_MAX || window->FocusIdxTabCounter == -1) + window->FocusIdxTabRequestCurrent = IM_INT_MAX; + else + window->FocusIdxTabRequestCurrent = (window->FocusIdxTabRequestNext + (window->FocusIdxTabCounter+1)) % (window->FocusIdxTabCounter+1); + window->FocusIdxAllCounter = window->FocusIdxTabCounter = -1; + window->FocusIdxAllRequestNext = window->FocusIdxTabRequestNext = IM_INT_MAX; + + ImRect title_bar_rect = window->TitleBarRect(); + + // Apply and ImClamp scrolling + window->ScrollY = window->NextScrollY; + window->ScrollY = ImMax(window->ScrollY, 0.0f); + if (!window->Collapsed && !window->SkipItems) + window->ScrollY = ImMin(window->ScrollY, ImMax(0.0f, window->SizeContents.y - window->SizeFull.y)); + window->NextScrollY = window->ScrollY; + + // At this point we don't have a clipping rectangle setup yet, so we can test and draw in title bar + // Collapse window by double-clicking on title bar + if (!(window->Flags & ImGuiWindowFlags_NoTitleBar)) + { + if (!(window->Flags & ImGuiWindowFlags_NoCollapse) && g.HoveredWindow == window && IsMouseHoveringRect(title_bar_rect) && g.IO.MouseDoubleClicked[0]) + { + window->Collapsed = !window->Collapsed; + if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings)) + MarkSettingsDirty(); + FocusWindow(window); + } + } + else + { + window->Collapsed = false; + } + + // Calculate auto-fit size + ImVec2 size_auto_fit; + if ((window->Flags & ImGuiWindowFlags_Tooltip) != 0) + { + // Tooltip always resize. We keep the spacing symmetric on both axises for aesthetic purpose. + size_auto_fit = window->SizeContents + style.WindowPadding - ImVec2(0.0f, style.ItemSpacing.y); + } + else + { + size_auto_fit = ImClamp(window->SizeContents + style.AutoFitPadding, style.WindowMinSize, ImMax(style.WindowMinSize, g.IO.DisplaySize - style.AutoFitPadding)); + if (size_auto_fit.y < window->SizeContents.y + style.AutoFitPadding.y) + size_auto_fit.x += style.ScrollbarWidth; + } + + const float window_rounding = (window->Flags & ImGuiWindowFlags_ChildWindow) ? style.ChildWindowRounding : style.WindowRounding; + if (window->Collapsed) + { + // We still process initial auto-fit on collapsed windows to get a window width + // But otherwise we don't honor ImGuiWindowFlags_AlwaysAutoResize when collapsed. + if (window->AutoFitFrames > 0) + { + window->SizeFull = window->AutoFitOnlyGrows ? ImMax(window->SizeFull, size_auto_fit) : size_auto_fit; + title_bar_rect = window->TitleBarRect(); + } + + // Draw title bar only + window->Size = title_bar_rect.GetSize(); + window->DrawList->AddRectFilled(title_bar_rect.GetTL(), title_bar_rect.GetBR(), window->Color(ImGuiCol_TitleBgCollapsed), window_rounding); + if (window->Flags & ImGuiWindowFlags_ShowBorders) + { + window->DrawList->AddRect(title_bar_rect.GetTL()+ImVec2(1,1), title_bar_rect.GetBR()+ImVec2(1,1), window->Color(ImGuiCol_BorderShadow), window_rounding); + window->DrawList->AddRect(title_bar_rect.GetTL(), title_bar_rect.GetBR(), window->Color(ImGuiCol_Border), window_rounding); + } + } + else + { + ImU32 resize_col = 0; + if ((window->Flags & ImGuiWindowFlags_Tooltip) != 0) + { + window->Size = window->SizeFull = size_auto_fit; + } + else + { + if ((window->Flags & ImGuiWindowFlags_AlwaysAutoResize) != 0) + { + // Don't continuously mark settings as dirty, the size of the window doesn't need to be stored. + window->SizeFull = size_auto_fit; + } + else if (window->AutoFitFrames > 0) + { + // Auto-fit only grows during the first few frames + window->SizeFull = window->AutoFitOnlyGrows ? ImMax(window->SizeFull, size_auto_fit) : size_auto_fit; + if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings)) + MarkSettingsDirty(); + } + else if (!(window->Flags & ImGuiWindowFlags_NoResize)) + { + // Manual resize grip + const ImRect resize_rect(window->Rect().GetBR()-ImVec2(14,14), window->Rect().GetBR()); + const ImGuiID resize_id = window->GetID("#RESIZE"); + bool hovered, held; + ButtonBehavior(resize_rect, resize_id, &hovered, &held, true); + resize_col = window->Color(held ? ImGuiCol_ResizeGripActive : hovered ? ImGuiCol_ResizeGripHovered : ImGuiCol_ResizeGrip); + + if (hovered || held) + g.MouseCursor = ImGuiMouseCursor_ResizeNWSE; + + if (g.HoveredWindow == window && held && g.IO.MouseDoubleClicked[0]) + { + // Manual auto-fit when double-clicking + window->SizeFull = size_auto_fit; + if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings)) + MarkSettingsDirty(); + SetActiveId(0); + } + else if (held) + { + // Resize + window->SizeFull = ImMax(window->SizeFull + g.IO.MouseDelta, style.WindowMinSize); + if (!(window->Flags & ImGuiWindowFlags_NoSavedSettings)) + MarkSettingsDirty(); + } + } + + // Update rectangle immediately so that rendering right below us isn't one frame late + window->Size = window->SizeFull; + title_bar_rect = window->TitleBarRect(); + } + + // Scrollbar + window->ScrollbarY = (window->SizeContents.y > window->Size.y) && !(window->Flags & ImGuiWindowFlags_NoScrollbar); + + // Window background + if (bg_alpha > 0.0f) + { + if ((window->Flags & ImGuiWindowFlags_ComboBox) != 0) + window->DrawList->AddRectFilled(window->Pos, window->Pos+window->Size, window->Color(ImGuiCol_ComboBg, bg_alpha), window_rounding); + else if ((window->Flags & ImGuiWindowFlags_Tooltip) != 0) + window->DrawList->AddRectFilled(window->Pos, window->Pos+window->Size, window->Color(ImGuiCol_TooltipBg, bg_alpha), window_rounding); + else if ((window->Flags & ImGuiWindowFlags_ChildWindow) != 0) + window->DrawList->AddRectFilled(window->Pos, window->Pos+window->Size-ImVec2(window->ScrollbarY?style.ScrollbarWidth:0.0f,0.0f), window->Color(ImGuiCol_ChildWindowBg, bg_alpha), window_rounding, window->ScrollbarY ? (1|8) : (0xF)); + else + window->DrawList->AddRectFilled(window->Pos, window->Pos+window->Size, window->Color(ImGuiCol_WindowBg, bg_alpha), window_rounding); + } + + // Title bar + if (!(window->Flags & ImGuiWindowFlags_NoTitleBar)) + window->DrawList->AddRectFilled(title_bar_rect.GetTL(), title_bar_rect.GetBR(), window->Color(ImGuiCol_TitleBg), window_rounding, 1|2); + + // Borders + if (window->Flags & ImGuiWindowFlags_ShowBorders) + { + window->DrawList->AddRect(window->Pos+ImVec2(1,1), window->Pos+window->Size+ImVec2(1,1), window->Color(ImGuiCol_BorderShadow), window_rounding); + window->DrawList->AddRect(window->Pos, window->Pos+window->Size, window->Color(ImGuiCol_Border), window_rounding); + if (!(window->Flags & ImGuiWindowFlags_NoTitleBar)) + window->DrawList->AddLine(title_bar_rect.GetBL(), title_bar_rect.GetBR(), window->Color(ImGuiCol_Border)); + } + + // Scrollbar + if (window->ScrollbarY) + Scrollbar(window); + + // Render resize grip + // (after the input handling so we don't have a frame of latency) + if (!(window->Flags & ImGuiWindowFlags_NoResize)) + { + const float r = window_rounding; + const ImVec2 br = window->Rect().GetBR(); + if (r == 0.0f) + { + window->DrawList->AddTriangleFilled(br, br-ImVec2(0,14), br-ImVec2(14,0), resize_col); + } + else + { + // FIXME: We should draw 4 triangles and decide on a size that's not dependent on the rounding size (previously used 18) + window->DrawList->AddArcFast(br - ImVec2(r,r), r, resize_col, 6, 9, true); + window->DrawList->AddTriangleFilled(br+ImVec2(0,-2*r),br+ImVec2(0,-r),br+ImVec2(-r,-r), resize_col); + window->DrawList->AddTriangleFilled(br+ImVec2(-r,-r), br+ImVec2(-r,0),br+ImVec2(-2*r,0), resize_col); + } + } + } + + // Setup drawing context + window->DC.ColumnsStartX = window->WindowPadding().x; + window->DC.ColumnsOffsetX = 0.0f; + window->DC.CursorStartPos = window->Pos + ImVec2(window->DC.ColumnsStartX + window->DC.ColumnsOffsetX, window->TitleBarHeight() + window->WindowPadding().y) - ImVec2(0.0f, window->ScrollY); + window->DC.CursorPos = window->DC.CursorStartPos; + window->DC.CursorPosPrevLine = window->DC.CursorPos; + window->DC.CursorMaxPos = window->DC.CursorStartPos; + window->DC.CurrentLineHeight = window->DC.PrevLineHeight = 0.0f; + window->DC.CurrentLineTextBaseOffset = window->DC.PrevLineTextBaseOffset = 0.0f; + window->DC.LogLinePosY = window->DC.CursorPos.y - 9999.0f; + window->DC.ChildWindows.resize(0); + window->DC.ItemWidth.resize(0); + window->DC.ItemWidth.push_back(window->ItemWidthDefault); + window->DC.AllowKeyboardFocus.resize(0); + window->DC.AllowKeyboardFocus.push_back(true); + window->DC.TextWrapPos.resize(0); + window->DC.TextWrapPos.push_back(-1.0f); // disabled + window->DC.ColorEditMode = ImGuiColorEditMode_UserSelect; + window->DC.ColumnsCurrent = 0; + window->DC.ColumnsCount = 1; + window->DC.ColumnsStartPos = window->DC.CursorPos; + window->DC.ColumnsCellMinY = window->DC.ColumnsCellMaxY = window->DC.ColumnsStartPos.y; + window->DC.TreeDepth = 0; + window->DC.StateStorage = &window->StateStorage; + window->DC.GroupStack.resize(0); + + if (window->AutoFitFrames > 0) + window->AutoFitFrames--; + + // Title bar + if (!(window->Flags & ImGuiWindowFlags_NoTitleBar)) + { + if (p_opened != NULL) + CloseWindowButton(p_opened); + + ImVec2 text_min = window->Pos + style.FramePadding; + if (!(window->Flags & ImGuiWindowFlags_NoCollapse)) + { + RenderCollapseTriangle(window->Pos + style.FramePadding, !window->Collapsed, 1.0f, true); + text_min.x += g.FontSize + style.ItemInnerSpacing.x; + } + + const ImVec2 text_size = CalcTextSize(name, NULL, true); + const ImVec2 text_max = window->Pos + ImVec2(window->Size.x - (p_opened ? (title_bar_rect.GetHeight()-3) : style.FramePadding.x), style.FramePadding.y*2 + text_size.y); + RenderTextClipped(text_min, name, NULL, &text_size, text_max); + } + if (window->Flags & ImGuiWindowFlags_Popup) + { + if (p_opened) + { + if (g.IO.MouseClicked[0] && (!g.HoveredWindow || g.HoveredWindow->RootWindow != window)) + *p_opened = false; + else if (!g.FocusedWindow) + *p_opened = false; + else if (g.FocusedWindow->RootWindow != window)// && !(g.FocusedWindow->RootWindow->Flags & ImGuiWindowFlags_Tooltip)) + *p_opened = false; + } + } + + // Save clipped aabb so we can access it in constant-time in FindHoveredWindow() + window->ClippedRect = window->Rect(); + window->ClippedRect.Clip(window->ClipRectStack.front()); + + // Pressing CTRL+C while holding on a window copy its content to the clipboard + // This works but 1. doesn't handle multiple Begin/End pairs, 2. recursing into another Begin/End pair - so we need to work that out and add better logging scope. + // Maybe we can support CTRL+C on every element? + /* + if (g.ActiveId == move_id) + if (g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_C)) + ImGui::LogToClipboard(); + */ + } + + // Inner clipping rectangle + // We set this up after processing the resize grip so that our clip rectangle doesn't lag by a frame + // Note that if our window is collapsed we will end up with a null clipping rectangle which is the correct behavior. + const ImRect title_bar_rect = window->TitleBarRect(); + ImVec4 clip_rect(title_bar_rect.Min.x+0.5f+window->WindowPadding().x*0.5f, title_bar_rect.Max.y+0.5f, window->Rect().Max.x+0.5f-window->WindowPadding().x*0.5f, window->Rect().Max.y-1.5f); + if (window->ScrollbarY) + clip_rect.z -= style.ScrollbarWidth; + PushClipRect(clip_rect); + + // Clear 'accessed' flag last thing + if (first_begin_of_the_frame) + window->Accessed = false; + + // Child window can be out of sight and have "negative" clip windows. + // Mark them as collapsed so commands are skipped earlier (we can't manually collapse because they have no title bar). + if (flags & ImGuiWindowFlags_ChildWindow) + { + IM_ASSERT((flags & ImGuiWindowFlags_NoTitleBar) != 0); + window->Collapsed = parent_window && parent_window->Collapsed; + + const ImVec4 clip_rect_t = window->ClipRectStack.back(); + window->Collapsed |= (clip_rect_t.x >= clip_rect_t.z || clip_rect_t.y >= clip_rect_t.w); + + // We also hide the window from rendering because we've already added its border to the command list. + // (we could perform the check earlier in the function but it is simpler at this point) + if (window->Collapsed) + window->Visible = false; + } + if (style.Alpha <= 0.0f) + window->Visible = false; + + // Return false if we don't intend to display anything to allow user to perform an early out optimization + window->SkipItems = (window->Collapsed || !window->Visible) && window->AutoFitFrames <= 0; + return !window->SkipItems; +} + +void ImGui::End() +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = g.CurrentWindow; + + ImGui::Columns(1, "#CloseColumns"); + PopClipRect(); // inner window clip rectangle + PopClipRect(); // outer window clip rectangle + window->DrawList->PopTextureID(); + + // Stop logging + if (!(window->Flags & ImGuiWindowFlags_ChildWindow)) // FIXME: add more options for scope of logging + ImGui::LogFinish(); + + // Pop + // NB: we don't clear 'window->RootWindow'. The pointer is allowed to live until the next call to Begin(). + g.CurrentWindowStack.pop_back(); + SetCurrentWindow(g.CurrentWindowStack.empty() ? NULL : g.CurrentWindowStack.back()); +} + +// Vertical scrollbar +// The entire piece of code below is rather confusing because: +// - We handle absolute seeking (when first clicking outside the grab) and relative manipulation (afterward or when clicking inside the grab) +// - We store values as ratio and in a form that allows the window content to change while we are holding on a scrollbar +static void Scrollbar(ImGuiWindow* window) +{ + ImGuiState& g = *GImGui; + const ImGuiStyle& style = g.Style; + const ImGuiID id = window->GetID("#SCROLLY"); + + // Render background + ImRect bb(window->Rect().Max.x - style.ScrollbarWidth, window->Pos.y + window->TitleBarHeight()+1, window->Rect().Max.x, window->Rect().Max.y-1); + window->DrawList->AddRectFilled(bb.Min, bb.Max, window->Color(ImGuiCol_ScrollbarBg)); + bb.Expand(-3.0f); + const float scrollbar_height = bb.GetHeight(); + + // The grabable box size generally represent the amount visible (vs the total scrollable amount) + // But we maintain a minimum size in pixel to allow for the user to still aim inside. + const float grab_h_pixels = ImMin(ImMax(scrollbar_height * ImSaturate(window->Size.y / ImMax(window->SizeContents.y, window->Size.y)), style.GrabMinSize), scrollbar_height); + const float grab_h_norm = grab_h_pixels / scrollbar_height; + + // Handle input right away. None of the code of Begin() is relying on scrolling position before calling Scrollbar(). + bool held = false; + bool hovered = false; + const bool previously_held = (g.ActiveId == id); + ButtonBehavior(bb, id, &hovered, &held, true); + + const float scroll_max = ImMax(1.0f, window->SizeContents.y - window->Size.y); + float scroll_ratio = ImSaturate(window->ScrollY / scroll_max); + float grab_y_norm = scroll_ratio * (scrollbar_height - grab_h_pixels) / scrollbar_height; + if (held) + { + const float clicked_y_norm = ImSaturate((g.IO.MousePos.y - bb.Min.y) / scrollbar_height); // Click position in scrollbar space (0.0f->1.0f) + g.HoveredId = id; + + bool seek_absolute = false; + if (!previously_held) + { + // On initial click calculate the distance between mouse and the center of the grab + if (clicked_y_norm >= grab_y_norm && clicked_y_norm <= grab_y_norm + grab_h_norm) + { + g.ScrollbarClickDeltaToGrabCenter = clicked_y_norm - grab_y_norm - grab_h_norm*0.5f; + } + else + { + seek_absolute = true; + g.ScrollbarClickDeltaToGrabCenter = 0; + } + } + + // Apply scroll + const float scroll_y_norm = ImSaturate((clicked_y_norm - g.ScrollbarClickDeltaToGrabCenter - grab_h_norm*0.5f) / (1.0f - grab_h_norm)); + window->ScrollY = (float)(int)(0.5f + scroll_y_norm * (window->SizeContents.y - window->Size.y)); + window->NextScrollY = window->ScrollY; + + // Update values for rendering + scroll_ratio = ImSaturate(window->ScrollY / scroll_max); + grab_y_norm = scroll_ratio * (scrollbar_height - grab_h_pixels) / scrollbar_height; + + // Update distance to grab now that we have seeked and saturated + if (seek_absolute) + g.ScrollbarClickDeltaToGrabCenter = clicked_y_norm - grab_y_norm - grab_h_norm*0.5f; + } + + // Render + const ImU32 grab_col = window->Color(held ? ImGuiCol_ScrollbarGrabActive : hovered ? ImGuiCol_ScrollbarGrabHovered : ImGuiCol_ScrollbarGrab); + window->DrawList->AddRectFilled(ImVec2(bb.Min.x, ImLerp(bb.Min.y, bb.Max.y, grab_y_norm)), ImVec2(bb.Max.x, ImLerp(bb.Min.y, bb.Max.y, grab_y_norm) + grab_h_pixels), grab_col); +} + +// Moving window to front of display (which happens to be back of our sorted list) +static void FocusWindow(ImGuiWindow* window) +{ + ImGuiState& g = *GImGui; + + // Always mark the window we passed as focused. This is used for keyboard interactions such as tabbing. + g.FocusedWindow = window; + + // Passing NULL allow to disable keyboard focus + if (!window) + return; + + // And move its root window to the top of the pile + if (window->RootWindow) + window = window->RootWindow; + + if (g.Windows.back() == window) + return; + + for (size_t i = 0; i < g.Windows.size(); i++) + if (g.Windows[i] == window) + { + g.Windows.erase(g.Windows.begin() + i); + break; + } + g.Windows.push_back(window); +} + +void ImGui::PushItemWidth(float item_width) +{ + ImGuiWindow* window = GetCurrentWindow(); + window->DC.ItemWidth.push_back(item_width == 0.0f ? window->ItemWidthDefault : item_width); +} + +void ImGui::PopItemWidth() +{ + ImGuiWindow* window = GetCurrentWindow(); + window->DC.ItemWidth.pop_back(); +} + +float ImGui::CalcItemWidth() +{ + ImGuiWindow* window = GetCurrentWindow(); + float w = window->DC.ItemWidth.back(); + if (w < 0.0f) + { + // Align to a right-side limit. We include 1 frame padding in the calculation because this is how the width is always used (we add 2 frame padding to it), but we could move that responsibility to the widget as well. + ImGuiState& g = *GImGui; + w = -w; + float width_to_right_edge = window->Pos.x + ImGui::GetContentRegionMax().x - window->DC.CursorPos.x; + w = ImMax(1.0f, width_to_right_edge - w - g.Style.FramePadding.x * 2.0f); + } + w = (float)(int)w; + return w; +} + +static void SetFont(ImFont* font) +{ + ImGuiState& g = *GImGui; + + IM_ASSERT(font && font->IsLoaded()); + IM_ASSERT(font->Scale > 0.0f); + g.Font = font; + g.FontBaseSize = g.IO.FontGlobalScale * g.Font->FontSize * g.Font->Scale; + g.FontSize = g.CurrentWindow ? g.CurrentWindow->CalcFontSize() : 0.0f; + g.FontTexUvWhitePixel = g.Font->ContainerAtlas->TexUvWhitePixel; +} + +void ImGui::PushFont(ImFont* font) +{ + ImGuiState& g = *GImGui; + + if (!font) + font = g.IO.Fonts->Fonts[0]; + + SetFont(font); + g.FontStack.push_back(font); + g.CurrentWindow->DrawList->PushTextureID(font->ContainerAtlas->TexID); +} + +void ImGui::PopFont() +{ + ImGuiState& g = *GImGui; + + g.CurrentWindow->DrawList->PopTextureID(); + g.FontStack.pop_back(); + SetFont(g.FontStack.empty() ? g.IO.Fonts->Fonts[0] : g.FontStack.back()); +} + +void ImGui::PushAllowKeyboardFocus(bool allow_keyboard_focus) +{ + ImGuiWindow* window = GetCurrentWindow(); + window->DC.AllowKeyboardFocus.push_back(allow_keyboard_focus); +} + +void ImGui::PopAllowKeyboardFocus() +{ + ImGuiWindow* window = GetCurrentWindow(); + window->DC.AllowKeyboardFocus.pop_back(); +} + +void ImGui::PushTextWrapPos(float wrap_x) +{ + ImGuiWindow* window = GetCurrentWindow(); + window->DC.TextWrapPos.push_back(wrap_x); +} + +void ImGui::PopTextWrapPos() +{ + ImGuiWindow* window = GetCurrentWindow(); + window->DC.TextWrapPos.pop_back(); +} + +void ImGui::PushStyleColor(ImGuiCol idx, const ImVec4& col) +{ + ImGuiState& g = *GImGui; + + ImGuiColMod backup; + backup.Col = idx; + backup.PreviousValue = g.Style.Colors[idx]; + g.ColorModifiers.push_back(backup); + g.Style.Colors[idx] = col; +} + +void ImGui::PopStyleColor(int count) +{ + ImGuiState& g = *GImGui; + + while (count > 0) + { + ImGuiColMod& backup = g.ColorModifiers.back(); + g.Style.Colors[backup.Col] = backup.PreviousValue; + g.ColorModifiers.pop_back(); + count--; + } +} + +static float* GetStyleVarFloatAddr(ImGuiStyleVar idx) +{ + ImGuiState& g = *GImGui; + switch (idx) + { + case ImGuiStyleVar_Alpha: return &g.Style.Alpha; + case ImGuiStyleVar_WindowRounding: return &g.Style.WindowRounding; + case ImGuiStyleVar_ChildWindowRounding: return &g.Style.ChildWindowRounding; + case ImGuiStyleVar_FrameRounding: return &g.Style.FrameRounding; + case ImGuiStyleVar_IndentSpacing: return &g.Style.IndentSpacing; + case ImGuiStyleVar_GrabMinSize: return &g.Style.GrabMinSize; + } + return NULL; +} + +static ImVec2* GetStyleVarVec2Addr(ImGuiStyleVar idx) +{ + ImGuiState& g = *GImGui; + switch (idx) + { + case ImGuiStyleVar_WindowPadding: return &g.Style.WindowPadding; + case ImGuiStyleVar_FramePadding: return &g.Style.FramePadding; + case ImGuiStyleVar_ItemSpacing: return &g.Style.ItemSpacing; + case ImGuiStyleVar_ItemInnerSpacing: return &g.Style.ItemInnerSpacing; + } + return NULL; +} + +void ImGui::PushStyleVar(ImGuiStyleVar idx, float val) +{ + ImGuiState& g = *GImGui; + + float* pvar = GetStyleVarFloatAddr(idx); + IM_ASSERT(pvar != NULL); // Called function with wrong-type? Variable is not a float. + ImGuiStyleMod backup; + backup.Var = idx; + backup.PreviousValue = ImVec2(*pvar, 0.0f); + g.StyleModifiers.push_back(backup); + *pvar = val; +} + + +void ImGui::PushStyleVar(ImGuiStyleVar idx, const ImVec2& val) +{ + ImGuiState& g = *GImGui; + + ImVec2* pvar = GetStyleVarVec2Addr(idx); + IM_ASSERT(pvar != NULL); // Called function with wrong-type? Variable is not a ImVec2. + ImGuiStyleMod backup; + backup.Var = idx; + backup.PreviousValue = *pvar; + g.StyleModifiers.push_back(backup); + *pvar = val; +} + +void ImGui::PopStyleVar(int count) +{ + ImGuiState& g = *GImGui; + + while (count > 0) + { + ImGuiStyleMod& backup = g.StyleModifiers.back(); + if (float* pvar_f = GetStyleVarFloatAddr(backup.Var)) + *pvar_f = backup.PreviousValue.x; + else if (ImVec2* pvar_v = GetStyleVarVec2Addr(backup.Var)) + *pvar_v = backup.PreviousValue; + g.StyleModifiers.pop_back(); + count--; + } +} + +const char* ImGui::GetStyleColName(ImGuiCol idx) +{ + // Create switch-case from enum with regexp: ImGuiCol_{.*}, --> case ImGuiCol_\1: return "\1"; + switch (idx) + { + case ImGuiCol_Text: return "Text"; + case ImGuiCol_WindowBg: return "WindowBg"; + case ImGuiCol_ChildWindowBg: return "ChildWindowBg"; + case ImGuiCol_Border: return "Border"; + case ImGuiCol_BorderShadow: return "BorderShadow"; + case ImGuiCol_FrameBg: return "FrameBg"; + case ImGuiCol_FrameBgHovered: return "FrameBgHovered"; + case ImGuiCol_FrameBgActive: return "FrameBgActive"; + case ImGuiCol_TitleBg: return "TitleBg"; + case ImGuiCol_TitleBgCollapsed: return "TitleBgCollapsed"; + case ImGuiCol_ScrollbarBg: return "ScrollbarBg"; + case ImGuiCol_ScrollbarGrab: return "ScrollbarGrab"; + case ImGuiCol_ScrollbarGrabHovered: return "ScrollbarGrabHovered"; + case ImGuiCol_ScrollbarGrabActive: return "ScrollbarGrabActive"; + case ImGuiCol_ComboBg: return "ComboBg"; + case ImGuiCol_CheckMark: return "CheckMark"; + case ImGuiCol_SliderGrab: return "SliderGrab"; + case ImGuiCol_SliderGrabActive: return "SliderGrabActive"; + case ImGuiCol_Button: return "Button"; + case ImGuiCol_ButtonHovered: return "ButtonHovered"; + case ImGuiCol_ButtonActive: return "ButtonActive"; + case ImGuiCol_Header: return "Header"; + case ImGuiCol_HeaderHovered: return "HeaderHovered"; + case ImGuiCol_HeaderActive: return "HeaderActive"; + case ImGuiCol_Column: return "Column"; + case ImGuiCol_ColumnHovered: return "ColumnHovered"; + case ImGuiCol_ColumnActive: return "ColumnActive"; + case ImGuiCol_ResizeGrip: return "ResizeGrip"; + case ImGuiCol_ResizeGripHovered: return "ResizeGripHovered"; + case ImGuiCol_ResizeGripActive: return "ResizeGripActive"; + case ImGuiCol_CloseButton: return "CloseButton"; + case ImGuiCol_CloseButtonHovered: return "CloseButtonHovered"; + case ImGuiCol_CloseButtonActive: return "CloseButtonActive"; + case ImGuiCol_PlotLines: return "PlotLines"; + case ImGuiCol_PlotLinesHovered: return "PlotLinesHovered"; + case ImGuiCol_PlotHistogram: return "PlotHistogram"; + case ImGuiCol_PlotHistogramHovered: return "PlotHistogramHovered"; + case ImGuiCol_TextSelectedBg: return "TextSelectedBg"; + case ImGuiCol_TooltipBg: return "TooltipBg"; + } + IM_ASSERT(0); + return "Unknown"; +} + +bool ImGui::IsWindowFocused() +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + return g.FocusedWindow == window; +} + +bool ImGui::IsRootWindowFocused() +{ + ImGuiState& g = *GImGui; + ImGuiWindow* root_window = GetCurrentWindow()->RootWindow; + return g.FocusedWindow == root_window; +} + +bool ImGui::IsRootWindowOrAnyChildFocused() +{ + ImGuiState& g = *GImGui; + ImGuiWindow* root_window = GetCurrentWindow()->RootWindow; + return g.FocusedWindow && g.FocusedWindow->RootWindow == root_window; +} + +float ImGui::GetWindowWidth() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->Size.x; +} + +ImVec2 ImGui::GetWindowPos() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->Pos; +} + +static void SetWindowPos(ImGuiWindow* window, const ImVec2& pos, ImGuiSetCond cond) +{ + // Test condition (NB: bit 0 is always true) and clear flags for next time + if (cond && (window->SetWindowPosAllowFlags & cond) == 0) + return; + window->SetWindowPosAllowFlags &= ~(ImGuiSetCond_Once | ImGuiSetCond_FirstUseEver); + + // Set + const ImVec2 old_pos = window->Pos; + window->PosFloat = pos; + window->Pos = ImVec2((float)(int)window->PosFloat.x, (float)(int)window->PosFloat.y); + window->DC.CursorPos += (window->Pos - old_pos); // As we happen to move the window while it is being appended to (which is a bad idea - will smear) let's at least offset the cursor + window->DC.CursorMaxPos += (window->Pos - old_pos); // And more importantly we need to adjust this so size calculation doesn't get affected. +} + +void ImGui::SetWindowPos(const ImVec2& pos, ImGuiSetCond cond) +{ + ImGuiWindow* window = GetCurrentWindow(); + SetWindowPos(window, pos, cond); +} + +void ImGui::SetWindowPos(const char* name, const ImVec2& pos, ImGuiSetCond cond) +{ + ImGuiWindow* window = FindWindowByName(name); + if (window) + SetWindowPos(window, pos, cond); +} + +ImVec2 ImGui::GetWindowSize() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->Size; +} + +static void SetWindowSize(ImGuiWindow* window, const ImVec2& size, ImGuiSetCond cond) +{ + // Test condition (NB: bit 0 is always true) and clear flags for next time + if (cond && (window->SetWindowSizeAllowFlags & cond) == 0) + return; + window->SetWindowSizeAllowFlags &= ~(ImGuiSetCond_Once | ImGuiSetCond_FirstUseEver); + + // Set + if (ImLengthSqr(size) > 0.00001f) + { + window->SizeFull = size; + window->AutoFitFrames = 0; + } + else + { + // Autofit + window->AutoFitFrames = 2; + window->AutoFitOnlyGrows = false; + } +} + +void ImGui::SetWindowSize(const ImVec2& size, ImGuiSetCond cond) +{ + ImGuiWindow* window = GetCurrentWindow(); + SetWindowSize(window, size, cond); +} + +void ImGui::SetWindowSize(const char* name, const ImVec2& size, ImGuiSetCond cond) +{ + ImGuiWindow* window = FindWindowByName(name); + if (window) + SetWindowSize(window, size, cond); +} + +static void SetWindowCollapsed(ImGuiWindow* window, bool collapsed, ImGuiSetCond cond) +{ + // Test condition (NB: bit 0 is always true) and clear flags for next time + if (cond && (window->SetWindowCollapsedAllowFlags & cond) == 0) + return; + window->SetWindowCollapsedAllowFlags &= ~(ImGuiSetCond_Once | ImGuiSetCond_FirstUseEver); + + // Set + window->Collapsed = collapsed; +} + +void ImGui::SetWindowCollapsed(bool collapsed, ImGuiSetCond cond) +{ + ImGuiWindow* window = GetCurrentWindow(); + SetWindowCollapsed(window, collapsed, cond); +} + +bool ImGui::GetWindowCollapsed() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->Collapsed; +} + +void ImGui::SetWindowCollapsed(const char* name, bool collapsed, ImGuiSetCond cond) +{ + ImGuiWindow* window = FindWindowByName(name); + if (window) + SetWindowCollapsed(window, collapsed, cond); +} + +void ImGui::SetWindowFocus() +{ + ImGuiWindow* window = GetCurrentWindow(); + FocusWindow(window); +} + +void ImGui::SetWindowFocus(const char* name) +{ + if (name) + { + ImGuiWindow* window = FindWindowByName(name); + if (window) + FocusWindow(window); + } + else + { + FocusWindow(NULL); + } +} + +void ImGui::SetNextWindowPos(const ImVec2& pos, ImGuiSetCond cond) +{ + ImGuiState& g = *GImGui; + g.SetNextWindowPosVal = pos; + g.SetNextWindowPosCond = cond ? cond : ImGuiSetCond_Always; +} + +void ImGui::SetNextWindowSize(const ImVec2& size, ImGuiSetCond cond) +{ + ImGuiState& g = *GImGui; + g.SetNextWindowSizeVal = size; + g.SetNextWindowSizeCond = cond ? cond : ImGuiSetCond_Always; +} + +void ImGui::SetNextWindowCollapsed(bool collapsed, ImGuiSetCond cond) +{ + ImGuiState& g = *GImGui; + g.SetNextWindowCollapsedVal = collapsed; + g.SetNextWindowCollapsedCond = cond ? cond : ImGuiSetCond_Always; +} + +void ImGui::SetNextWindowFocus() +{ + ImGuiState& g = *GImGui; + g.SetNextWindowFocus = true; +} + +ImVec2 ImGui::GetContentRegionMax() +{ + ImGuiWindow* window = GetCurrentWindow(); + ImVec2 window_padding = window->WindowPadding(); + ImVec2 mx = window->Size - window_padding; + if (window->DC.ColumnsCount != 1) + { + mx.x = ImGui::GetColumnOffset(window->DC.ColumnsCurrent + 1); + mx.x -= window_padding.x; + } + else + { + if (window->ScrollbarY) + mx.x -= GImGui->Style.ScrollbarWidth; + } + return mx; +} + +ImVec2 ImGui::GetWindowContentRegionMin() +{ + ImGuiWindow* window = GetCurrentWindow(); + return ImVec2(0, window->TitleBarHeight()) + window->WindowPadding(); +} + +ImVec2 ImGui::GetWindowContentRegionMax() +{ + ImGuiWindow* window = GetCurrentWindow(); + ImVec2 m = window->Size - window->WindowPadding(); + if (window->ScrollbarY) + m.x -= GImGui->Style.ScrollbarWidth; + return m; +} + +float ImGui::GetTextLineHeight() +{ + ImGuiState& g = *GImGui; + return g.FontSize; +} + +float ImGui::GetTextLineHeightWithSpacing() +{ + ImGuiState& g = *GImGui; + return g.FontSize + g.Style.ItemSpacing.y; +} + +ImDrawList* ImGui::GetWindowDrawList() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->DrawList; +} + +ImFont* ImGui::GetWindowFont() +{ + ImGuiState& g = *GImGui; + return g.Font; +} + +float ImGui::GetWindowFontSize() +{ + ImGuiState& g = *GImGui; + return g.FontSize; +} + +void ImGui::SetWindowFontScale(float scale) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + window->FontWindowScale = scale; + g.FontSize = window->CalcFontSize(); +} + +// NB: internally we store CursorPos in absolute screen coordinates because it is more convenient. +// Conversion happens as we pass the value to user, but it makes our naming convention dodgy. May want to rename 'DC.CursorPos'. +ImVec2 ImGui::GetCursorPos() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->DC.CursorPos - window->Pos; +} + +float ImGui::GetCursorPosX() +{ + return ImGui::GetCursorPos().x; +} + +float ImGui::GetCursorPosY() +{ + return ImGui::GetCursorPos().y; +} + +void ImGui::SetCursorPos(const ImVec2& pos) +{ + ImGuiWindow* window = GetCurrentWindow(); + window->DC.CursorPos = window->Pos + pos; + window->DC.CursorMaxPos = ImMax(window->DC.CursorMaxPos, window->DC.CursorPos); +} + +void ImGui::SetCursorPosX(float x) +{ + ImGuiWindow* window = GetCurrentWindow(); + window->DC.CursorPos.x = window->Pos.x + x; + window->DC.CursorMaxPos.x = ImMax(window->DC.CursorMaxPos.x, window->DC.CursorPos.x); +} + +void ImGui::SetCursorPosY(float y) +{ + ImGuiWindow* window = GetCurrentWindow(); + window->DC.CursorPos.y = window->Pos.y + y; + window->DC.CursorMaxPos.y = ImMax(window->DC.CursorMaxPos.y, window->DC.CursorPos.y); +} + +ImVec2 ImGui::GetCursorScreenPos() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->DC.CursorPos; +} + +void ImGui::SetCursorScreenPos(const ImVec2& screen_pos) +{ + ImGuiWindow* window = GetCurrentWindow(); + window->DC.CursorPos = screen_pos; +} + +float ImGui::GetScrollPosY() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->ScrollY; +} + +float ImGui::GetScrollMaxY() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->SizeContents.y - window->SizeFull.y; +} + +void ImGui::SetScrollPosHere() +{ + ImGuiWindow* window = GetCurrentWindow(); + window->NextScrollY = (window->DC.CursorPos.y + window->ScrollY) - (window->Pos.y + window->SizeFull.y * 0.5f) - (window->TitleBarHeight() + window->WindowPadding().y); +} + +void ImGui::SetKeyboardFocusHere(int offset) +{ + ImGuiWindow* window = GetCurrentWindow(); + window->FocusIdxAllRequestNext = window->FocusIdxAllCounter + 1 + offset; + window->FocusIdxTabRequestNext = IM_INT_MAX; +} + +void ImGui::SetStateStorage(ImGuiStorage* tree) +{ + ImGuiWindow* window = GetCurrentWindow(); + window->DC.StateStorage = tree ? tree : &window->StateStorage; +} + +ImGuiStorage* ImGui::GetStateStorage() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->DC.StateStorage; +} + +void ImGui::TextV(const char* fmt, va_list args) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return; + + const char* text_end = g.TempBuffer + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args); + TextUnformatted(g.TempBuffer, text_end); +} + +void ImGui::Text(const char* fmt, ...) +{ + va_list args; + va_start(args, fmt); + TextV(fmt, args); + va_end(args); +} + +void ImGui::TextColoredV(const ImVec4& col, const char* fmt, va_list args) +{ + ImGui::PushStyleColor(ImGuiCol_Text, col); + TextV(fmt, args); + ImGui::PopStyleColor(); +} + +void ImGui::TextColored(const ImVec4& col, const char* fmt, ...) +{ + va_list args; + va_start(args, fmt); + TextColoredV(col, fmt, args); + va_end(args); +} + +void ImGui::TextWrappedV(const char* fmt, va_list args) +{ + ImGui::PushTextWrapPos(0.0f); + TextV(fmt, args); + ImGui::PopTextWrapPos(); +} + +void ImGui::TextWrapped(const char* fmt, ...) +{ + va_list args; + va_start(args, fmt); + TextWrappedV(fmt, args); + va_end(args); +} + +void ImGui::TextUnformatted(const char* text, const char* text_end) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return; + + IM_ASSERT(text != NULL); + const char* text_begin = text; + if (text_end == NULL) + text_end = text + strlen(text); // FIXME-OPT + + const float wrap_pos_x = window->DC.TextWrapPos.back(); + const bool wrap_enabled = wrap_pos_x >= 0.0f; + if (text_end - text > 2000 && !wrap_enabled) + { + // Long text! + // Perform manual coarse clipping to optimize for long multi-line text + // From this point we will only compute the width of lines that are visible. Optimization only available when word-wrapping is disabled. + // We also don't vertically center the text within the line full height, which is unlikely to matter because we are likely the biggest and only item on the line. + const char* line = text; + const float line_height = ImGui::GetTextLineHeight(); + const ImVec2 text_pos = window->DC.CursorPos + ImVec2(0.0f, window->DC.CurrentLineTextBaseOffset); + const ImVec4 clip_rect = window->ClipRectStack.back(); + ImVec2 text_size(0,0); + + if (text_pos.y <= clip_rect.w) + { + ImVec2 pos = text_pos; + + // Lines to skip (can't skip when logging text) + if (!g.LogEnabled) + { + int lines_skippable = (int)((clip_rect.y - text_pos.y) / line_height) - 1; + if (lines_skippable > 0) + { + int lines_skipped = 0; + while (line < text_end && lines_skipped <= lines_skippable) + { + const char* line_end = strchr(line, '\n'); + line = line_end + 1; + lines_skipped++; + } + pos.y += lines_skipped * line_height; + } + } + + // Lines to render + if (line < text_end) + { + ImRect line_rect(pos, pos + ImVec2(ImGui::GetWindowWidth(), line_height)); + while (line < text_end) + { + const char* line_end = strchr(line, '\n'); + if (IsClippedEx(line_rect, NULL, false)) + break; + + const ImVec2 line_size = CalcTextSize(line, line_end, false); + text_size.x = ImMax(text_size.x, line_size.x); + RenderText(pos, line, line_end, false); + if (!line_end) + line_end = text_end; + line = line_end + 1; + line_rect.Min.y += line_height; + line_rect.Max.y += line_height; + pos.y += line_height; + } + + // Count remaining lines + int lines_skipped = 0; + while (line < text_end) + { + const char* line_end = strchr(line, '\n'); + if (!line_end) + line_end = text_end; + line = line_end + 1; + lines_skipped++; + } + pos.y += lines_skipped * line_height; + } + + text_size.y += (pos - text_pos).y; + } + + ImRect bb(text_pos, text_pos + text_size); + ItemSize(bb); + ItemAdd(bb, NULL); + } + else + { + const float wrap_width = wrap_enabled ? CalcWrapWidthForPos(window->DC.CursorPos, wrap_pos_x) : 0.0f; + const ImVec2 text_size = CalcTextSize(text_begin, text_end, false, wrap_width); + + // Account of baseline offset + ImVec2 text_pos = window->DC.CursorPos; + text_pos.y += window->DC.CurrentLineTextBaseOffset; + + ImRect bb(text_pos, text_pos + text_size); + ItemSize(bb.GetSize()); + if (!ItemAdd(bb, NULL)) + return; + + // Render (we don't hide text after ## in this end-user function) + RenderTextWrapped(bb.Min, text_begin, text_end, wrap_width); + } +} + +void ImGui::AlignFirstTextHeightToWidgets() +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return; + + // Declare a dummy item size to that upcoming items that are smaller will center-align on the newly expanded line height. + ItemSize(ImVec2(0, g.FontSize + g.Style.FramePadding.y*2), g.Style.FramePadding.y); + ImGui::SameLine(0, 0); +} + +// Add a label+text combo aligned to other label+value widgets +void ImGui::LabelTextV(const char* label, const char* fmt, va_list args) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return; + + const ImGuiStyle& style = g.Style; + const float w = ImGui::CalcItemWidth(); + + const char* value_text_begin = &g.TempBuffer[0]; + const char* value_text_end = value_text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args); + + const ImVec2 label_size = CalcTextSize(label, NULL, true); + const ImRect value_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w + style.FramePadding.x*2, label_size.y + style.FramePadding.y*2)); + const ImRect total_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w + style.FramePadding.x*2 + (label_size.x > 0.0f ? style.ItemInnerSpacing.x : 0.0f), style.FramePadding.y*2) + label_size); + ItemSize(total_bb, style.FramePadding.y); + if (!ItemAdd(total_bb, NULL)) + return; + + // Render + RenderTextClipped(ImVec2(value_bb.Min.x, value_bb.Min.y + style.FramePadding.y), value_text_begin, value_text_end, NULL, value_bb.Max); + RenderText(ImVec2(value_bb.Max.x + style.ItemInnerSpacing.x, value_bb.Min.y + style.FramePadding.y), label); +} + +void ImGui::LabelText(const char* label, const char* fmt, ...) +{ + va_list args; + va_start(args, fmt); + LabelTextV(label, fmt, args); + va_end(args); +} + +static inline bool IsWindowContentHoverable(ImGuiWindow* window) +{ + ImGuiState& g = *GImGui; + + // An active popup disable hovering on other windows (apart from its own children) + if (ImGuiWindow* focused_window = g.FocusedWindow) + if (ImGuiWindow* focused_root_window = focused_window->RootWindow) + if ((focused_root_window->Flags & ImGuiWindowFlags_Popup) != 0 && focused_root_window->WasVisible && focused_root_window != window->RootWindow) + return false; + + return true; +} + +static bool IsHovered(const ImRect& bb, ImGuiID id) +{ + ImGuiState& g = *GImGui; + if (g.HoveredId == 0) + { + ImGuiWindow* window = GetCurrentWindow(); + if (g.HoveredRootWindow == window->RootWindow) + if ((g.ActiveId == 0 || g.ActiveId == id || g.ActiveIdIsFocusedOnly) && IsMouseHoveringRect(bb)) + if (IsWindowContentHoverable(g.HoveredRootWindow)) + return true; + } + return false; +} + +static bool ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool* out_held, bool allow_key_modifiers, bool repeat, bool pressed_on_click) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + + const bool hovered = IsHovered(bb, id); + bool pressed = false; + if (hovered) + { + g.HoveredId = id; + if (allow_key_modifiers || (!g.IO.KeyCtrl && !g.IO.KeyShift && !g.IO.KeyAlt)) + { + if (g.IO.MouseClicked[0]) + { + if (pressed_on_click) + { + pressed = true; + SetActiveId(0); + } + else + { + SetActiveId(id); + } + FocusWindow(window); + } + else if (repeat && g.ActiveId && ImGui::IsMouseClicked(0, true)) + { + pressed = true; + } + } + } + + bool held = false; + if (g.ActiveId == id) + { + if (g.IO.MouseDown[0]) + { + held = true; + } + else + { + if (hovered) + pressed = true; + SetActiveId(0); + } + } + + if (out_hovered) *out_hovered = hovered; + if (out_held) *out_held = held; + + return pressed; +} + +bool ImGui::Button(const char* label, const ImVec2& size_arg, bool repeat_when_held) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const ImGuiID id = window->GetID(label); + const ImVec2 label_size = CalcTextSize(label, NULL, true); + + const ImVec2 size(size_arg.x != 0.0f ? size_arg.x : (label_size.x + style.FramePadding.x*2), size_arg.y != 0.0f ? size_arg.y : (label_size.y + style.FramePadding.y*2)); + const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size); + ItemSize(bb, style.FramePadding.y); + if (!ItemAdd(bb, &id)) + return false; + + bool hovered, held; + bool pressed = ButtonBehavior(bb, id, &hovered, &held, true, repeat_when_held); + + // Render + const ImU32 col = window->Color((hovered && held) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button); + RenderFrame(bb.Min, bb.Max, col, true, style.FrameRounding); + + const ImVec2 off = ImVec2(ImMax(0.0f, size.x - label_size.x) * 0.5f, ImMax(0.0f, size.y - label_size.y) * 0.5f); // Center (only applies if we explicitly gave a size bigger than the text size, which isn't the common path) + RenderTextClipped(bb.Min + off, label, NULL, &label_size, bb.Max); // Render clip (only applies if we explicitly gave a size smaller than the text size, which isn't the commmon path) + + return pressed; +} + +// Small buttons fits within text without additional spacing. +bool ImGui::SmallButton(const char* label) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const ImGuiID id = window->GetID(label); + const ImVec2 label_size = CalcTextSize(label, NULL, true); + + ImVec2 text_pos = window->DC.CursorPos; + text_pos.y += window->DC.CurrentLineTextBaseOffset; + ImRect bb(text_pos, text_pos + label_size + ImVec2(style.FramePadding.x*2,0)); + ItemSize(bb); + if (!ItemAdd(bb, &id)) + return false; + + bool hovered, held; + bool pressed = ButtonBehavior(bb, id, &hovered, &held, true); + + // Render + const ImU32 col = window->Color((hovered && held) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button); + RenderFrame(bb.Min, bb.Max, col); + RenderText(bb.Min + ImVec2(style.FramePadding.x,0), label); + + return pressed; +} + +// Tip: use ImGui::PushID()/PopID() to push indices or pointers in the ID stack. +// Then you can keep 'str_id' empty or the same for all your buttons (instead of creating a string based on a non-string id) +bool ImGui::InvisibleButton(const char* str_id, const ImVec2& size) +{ + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiID id = window->GetID(str_id); + const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size); + ItemSize(bb); + if (!ItemAdd(bb, &id)) + return false; + + bool hovered, held; + bool pressed = ButtonBehavior(bb, id, &hovered, &held, true); + + return pressed; +} + +// Upper-right button to close a window. +static bool CloseWindowButton(bool* p_opened) +{ + ImGuiWindow* window = GetCurrentWindow(); + + const ImGuiID id = window->GetID("#CLOSE"); + const float size = window->TitleBarHeight() - 4.0f; + const ImRect bb(window->Rect().GetTR() + ImVec2(-3.0f-size,2.0f), window->Rect().GetTR() + ImVec2(-3.0f,2.0f+size)); + + bool hovered, held; + bool pressed = ButtonBehavior(bb, id, &hovered, &held, true); + + // Render + const ImU32 col = window->Color((held && hovered) ? ImGuiCol_CloseButtonActive : hovered ? ImGuiCol_CloseButtonHovered : ImGuiCol_CloseButton); + const ImVec2 center = bb.GetCenter(); + window->DrawList->AddCircleFilled(center, ImMax(2.0f,size*0.5f), col, 16); + + const float cross_extent = (size * 0.5f * 0.7071f) - 1.0f; + if (hovered) + { + window->DrawList->AddLine(center + ImVec2(+cross_extent,+cross_extent), center + ImVec2(-cross_extent,-cross_extent), window->Color(ImGuiCol_Text)); + window->DrawList->AddLine(center + ImVec2(+cross_extent,-cross_extent), center + ImVec2(-cross_extent,+cross_extent), window->Color(ImGuiCol_Text)); + } + + if (p_opened != NULL && pressed) + *p_opened = !*p_opened; + + return pressed; +} + +void ImGui::Image(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, const ImVec4& tint_col, const ImVec4& border_col) +{ + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return; + + ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size); + if (border_col.w > 0.0f) + bb.Max += ImVec2(2,2); + ItemSize(bb); + if (!ItemAdd(bb, NULL)) + return; + + if (border_col.w > 0.0f) + { + window->DrawList->AddRect(bb.Min, bb.Max, window->Color(border_col), 0.0f); + window->DrawList->AddImage(user_texture_id, bb.Min+ImVec2(1,1), bb.Max-ImVec2(1,1), uv0, uv1, window->Color(tint_col)); + } + else + { + window->DrawList->AddImage(user_texture_id, bb.Min, bb.Max, uv0, uv1, window->Color(tint_col)); + } +} + +// frame_padding < 0: uses FramePadding from style (default) +// frame_padding = 0: no framing +// frame_padding > 0: set framing size +// The color used are the button colors. +bool ImGui::ImageButton(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, int frame_padding, const ImVec4& bg_col, const ImVec4& tint_col) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + + // Default to using texture ID as ID. User can still push string/integer prefixes. + // We could hash the size/uv to create a unique ID but that would prevent the user from animating buttons. + ImGui::PushID((void *)user_texture_id); + const ImGuiID id = window->GetID("#image"); + ImGui::PopID(); + + const ImVec2 padding = (frame_padding >= 0) ? ImVec2((float)frame_padding, (float)frame_padding) : style.FramePadding; + const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size + padding*2); + const ImRect image_bb(window->DC.CursorPos + padding, window->DC.CursorPos + padding + size); + ItemSize(bb); + if (!ItemAdd(bb, &id)) + return false; + + bool hovered, held; + bool pressed = ButtonBehavior(bb, id, &hovered, &held, true); + + // Render + const ImU32 col = window->Color((hovered && held) ? ImGuiCol_ButtonActive : hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button); + if (padding.x > 0.0f || padding.y > 0.0f) + RenderFrame(bb.Min, bb.Max, col); + if (bg_col.w > 0.0f) + window->DrawList->AddRectFilled(image_bb.Min, image_bb.Max, window->Color(bg_col)); + window->DrawList->AddImage(user_texture_id, image_bb.Min, image_bb.Max, uv0, uv1, window->Color(tint_col)); + + return pressed; +} + +// Start logging ImGui output to TTY +void ImGui::LogToTTY(int max_depth) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (g.LogEnabled) + return; + + g.LogEnabled = true; + g.LogFile = stdout; + g.LogStartDepth = window->DC.TreeDepth; + if (max_depth >= 0) + g.LogAutoExpandMaxDepth = max_depth; +} + +// Start logging ImGui output to given file +void ImGui::LogToFile(int max_depth, const char* filename) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (g.LogEnabled) + return; + if (!filename) + { + filename = g.IO.LogFilename; + if (!filename) + return; + } + + g.LogFile = fopen(filename, "ab"); + if (!g.LogFile) + { + IM_ASSERT(g.LogFile != NULL); // Consider this an error + return; + } + g.LogEnabled = true; + g.LogStartDepth = window->DC.TreeDepth; + if (max_depth >= 0) + g.LogAutoExpandMaxDepth = max_depth; +} + +// Start logging ImGui output to clipboard +void ImGui::LogToClipboard(int max_depth) +{ + ImGuiWindow* window = GetCurrentWindow(); + ImGuiState& g = *GImGui; + if (g.LogEnabled) + return; + + g.LogEnabled = true; + g.LogFile = NULL; + g.LogStartDepth = window->DC.TreeDepth; + if (max_depth >= 0) + g.LogAutoExpandMaxDepth = max_depth; +} + +void ImGui::LogFinish() +{ + ImGuiState& g = *GImGui; + if (!g.LogEnabled) + return; + + ImGui::LogText(STR_NEWLINE); + g.LogEnabled = false; + if (g.LogFile != NULL) + { + if (g.LogFile == stdout) + fflush(g.LogFile); + else + fclose(g.LogFile); + g.LogFile = NULL; + } + if (g.LogClipboard->size() > 1) + { + if (g.IO.SetClipboardTextFn) + g.IO.SetClipboardTextFn(g.LogClipboard->begin()); + g.LogClipboard->clear(); + } +} + +// Helper to display logging buttons +void ImGui::LogButtons() +{ + ImGuiState& g = *GImGui; + + ImGui::PushID("LogButtons"); + const bool log_to_tty = ImGui::Button("Log To TTY"); + ImGui::SameLine(); + const bool log_to_file = ImGui::Button("Log To File"); + ImGui::SameLine(); + const bool log_to_clipboard = ImGui::Button("Log To Clipboard"); + ImGui::SameLine(); + + ImGui::PushItemWidth(80.0f); + ImGui::PushAllowKeyboardFocus(false); + ImGui::SliderInt("Depth", &g.LogAutoExpandMaxDepth, 0, 9, NULL); + ImGui::PopAllowKeyboardFocus(); + ImGui::PopItemWidth(); + ImGui::PopID(); + + // Start logging at the end of the function so that the buttons don't appear in the log + if (log_to_tty) + LogToTTY(g.LogAutoExpandMaxDepth); + if (log_to_file) + LogToFile(g.LogAutoExpandMaxDepth, g.IO.LogFilename); + if (log_to_clipboard) + LogToClipboard(g.LogAutoExpandMaxDepth); +} + +bool ImGui::CollapsingHeader(const char* label, const char* str_id, bool display_frame, bool default_open) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + + IM_ASSERT(str_id != NULL || label != NULL); + if (str_id == NULL) + str_id = label; + if (label == NULL) + label = str_id; + const ImGuiID id = window->GetID(str_id); + + // We only write to the tree storage if the user clicks (or explicitely use SetNextTreeNode*** functions) + ImGuiStorage* storage = window->DC.StateStorage; + bool opened; + if (g.SetNextTreeNodeOpenedCond != 0) + { + if (g.SetNextTreeNodeOpenedCond & ImGuiSetCond_Always) + { + opened = g.SetNextTreeNodeOpenedVal; + storage->SetInt(id, opened); + } + else + { + // We treat ImGuiSetCondition_Once and ImGuiSetCondition_FirstUseEver the same because tree node state are not saved persistently. + const int stored_value = storage->GetInt(id, -1); + if (stored_value == -1) + { + opened = g.SetNextTreeNodeOpenedVal; + storage->SetInt(id, opened); + } + else + { + opened = stored_value != 0; + } + } + g.SetNextTreeNodeOpenedCond = 0; + } + else + { + opened = storage->GetInt(id, default_open) != 0; + } + + // Framed header expand a little outside the default padding + const ImVec2 window_padding = window->WindowPadding(); + const ImVec2 label_size = CalcTextSize(label, NULL, true); + const ImVec2 pos_min = window->DC.CursorPos; + const ImVec2 pos_max = window->Pos + GetContentRegionMax(); + ImRect bb = ImRect(pos_min, ImVec2(pos_max.x, pos_min.y + label_size.y)); + if (display_frame) + { + bb.Min.x -= window_padding.x*0.5f - 1; + bb.Max.x += window_padding.x*0.5f - 1; + bb.Max.y += style.FramePadding.y * 2; + } + + // FIXME: we don't provide our width so that it doesn't get feed back into AutoFit. Should manage that better so we can still hover without extending ContentsSize + const ImRect text_bb(bb.Min, bb.Min + ImVec2(g.FontSize + style.FramePadding.x*2*2,0) + label_size); + ItemSize(ImVec2(text_bb.GetSize().x, bb.GetSize().y), display_frame ? style.FramePadding.y : 0.0f); + + // When logging is enabled, if automatically expand tree nodes (but *NOT* collapsing headers.. seems like sensible behavior). + // NB- If we are above max depth we still allow manually opened nodes to be logged. + if (g.LogEnabled && !display_frame && window->DC.TreeDepth < g.LogAutoExpandMaxDepth) + opened = true; + + if (!ItemAdd(bb, &id)) + return opened; + + bool hovered, held; + bool pressed = ButtonBehavior(display_frame ? bb : text_bb, id, &hovered, &held, false); + if (pressed) + { + opened = !opened; + storage->SetInt(id, opened); + } + + // Render + const ImU32 col = window->Color((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header); + if (display_frame) + { + // Framed type + RenderFrame(bb.Min, bb.Max, col, true, style.FrameRounding); + RenderCollapseTriangle(bb.Min + style.FramePadding, opened, 1.0f, true); + if (g.LogEnabled) + { + // NB: '##' is normally used to hide text (as a library-wide feature), so we need to specify the text range to make sure the ## aren't stripped out here. + const char log_prefix[] = "\n##"; + LogText(bb.Min + style.FramePadding, log_prefix, log_prefix+3); + } + RenderText(bb.Min + style.FramePadding + ImVec2(g.FontSize + style.FramePadding.x*2,0), label); + if (g.LogEnabled) + { + const char log_suffix[] = "##"; + LogText(bb.Min + style.FramePadding, log_suffix, log_suffix+2); + } + } + else + { + // Unframed typed for tree nodes + if ((held && hovered) || hovered) + RenderFrame(bb.Min, bb.Max, col, false); + RenderCollapseTriangle(bb.Min + ImVec2(style.FramePadding.x, g.FontSize*0.15f), opened, 0.70f, false); + if (g.LogEnabled) + LogText(bb.Min, ">"); + RenderText(bb.Min + ImVec2(g.FontSize + style.FramePadding.x*2,0), label); + } + + return opened; +} + +void ImGui::Bullet() +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return; + + const ImGuiStyle& style = g.Style; + const float line_height = g.FontSize; + const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(line_height, line_height)); + ItemSize(bb); + if (!ItemAdd(bb, NULL)) + return; + + // Render + const float bullet_size = line_height*0.15f; + window->DrawList->AddCircleFilled(bb.Min + ImVec2(style.FramePadding.x + line_height*0.5f, line_height*0.5f), bullet_size, window->Color(ImGuiCol_Text)); + + // Stay on same line + ImGui::SameLine(0, -1); +} + +// Text with a little bullet aligned to the typical tree node. +void ImGui::BulletTextV(const char* fmt, va_list args) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return; + + const char* text_begin = g.TempBuffer; + const char* text_end = text_begin + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args); + + const ImGuiStyle& style = g.Style; + const float line_height = g.FontSize; + const ImVec2 label_size = CalcTextSize(text_begin, text_end, true); + const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(line_height + (label_size.x > 0.0f ? (style.FramePadding.x*2) : 0.0f),0) + label_size); // Empty text doesn't add padding + ItemSize(bb); + if (!ItemAdd(bb, NULL)) + return; + + // Render + const float bullet_size = line_height*0.15f; + window->DrawList->AddCircleFilled(bb.Min + ImVec2(style.FramePadding.x + line_height*0.5f, line_height*0.5f), bullet_size, window->Color(ImGuiCol_Text)); + RenderText(bb.Min+ImVec2(g.FontSize + style.FramePadding.x*2,0), text_begin, text_end); +} + +void ImGui::BulletText(const char* fmt, ...) +{ + va_list args; + va_start(args, fmt); + BulletTextV(fmt, args); + va_end(args); +} + +// If returning 'true' the node is open and the user is responsible for calling TreePop +bool ImGui::TreeNodeV(const char* str_id, const char* fmt, va_list args) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args); + + if (!str_id || !str_id[0]) + str_id = fmt; + + ImGui::PushID(str_id); + const bool opened = ImGui::CollapsingHeader(g.TempBuffer, "", false); + ImGui::PopID(); + + if (opened) + ImGui::TreePush(str_id); + + return opened; +} + +bool ImGui::TreeNode(const char* str_id, const char* fmt, ...) +{ + va_list args; + va_start(args, fmt); + bool s = TreeNodeV(str_id, fmt, args); + va_end(args); + return s; +} + +// If returning 'true' the node is open and the user is responsible for calling TreePop +bool ImGui::TreeNodeV(const void* ptr_id, const char* fmt, va_list args) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + ImFormatStringV(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), fmt, args); + + if (!ptr_id) + ptr_id = fmt; + + ImGui::PushID(ptr_id); + const bool opened = ImGui::CollapsingHeader(g.TempBuffer, "", false); + ImGui::PopID(); + + if (opened) + ImGui::TreePush(ptr_id); + + return opened; +} + +bool ImGui::TreeNode(const void* ptr_id, const char* fmt, ...) +{ + va_list args; + va_start(args, fmt); + bool s = TreeNodeV(ptr_id, fmt, args); + va_end(args); + return s; +} + +bool ImGui::TreeNode(const char* str_label_id) +{ + return TreeNode(str_label_id, "%s", str_label_id); +} + +void ImGui::SetNextTreeNodeOpened(bool opened, ImGuiSetCond cond) +{ + ImGuiState& g = *GImGui; + g.SetNextTreeNodeOpenedVal = opened; + g.SetNextTreeNodeOpenedCond = cond ? cond : ImGuiSetCond_Always; +} + +void ImGui::PushID(const char* str_id) +{ + ImGuiWindow* window = GetCurrentWindow(); + window->IDStack.push_back(window->GetID(str_id)); +} + +void ImGui::PushID(const char* str_id_begin, const char* str_id_end) +{ + ImGuiWindow* window = GetCurrentWindow(); + window->IDStack.push_back(window->GetID(str_id_begin, str_id_end)); +} + +void ImGui::PushID(const void* ptr_id) +{ + ImGuiWindow* window = GetCurrentWindow(); + window->IDStack.push_back(window->GetID(ptr_id)); +} + +void ImGui::PushID(const int int_id) +{ + const void* ptr_id = (void*)(intptr_t)int_id; + ImGuiWindow* window = GetCurrentWindow(); + window->IDStack.push_back(window->GetID(ptr_id)); +} + +void ImGui::PopID() +{ + ImGuiWindow* window = GetCurrentWindow(); + window->IDStack.pop_back(); +} + +ImGuiID ImGui::GetID(const char* str_id) +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->GetID(str_id); +} + +ImGuiID ImGui::GetID(const char* str_id_begin, const char* str_id_end) +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->GetID(str_id_begin, str_id_end); +} + +ImGuiID ImGui::GetID(const void* ptr_id) +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->GetID(ptr_id); +} + +// User can input math operators (e.g. +100) to edit a numerical values. +// NB: only call right after InputText because we are using its InitialValue storage +static void ApplyNumericalTextInput(const char* buf, float *v) +{ + while (ImCharIsSpace(*buf)) + buf++; + + // We don't support '-' op because it would conflict with inputing negative value. + // Instead you can use +-100 to subtract from an existing value + char op = buf[0]; + if (op == '+' || op == '*' || op == '/') + { + buf++; + while (ImCharIsSpace(*buf)) + buf++; + } + else + { + op = 0; + } + if (!buf[0]) + return; + + float ref_v = *v; + if (op) + if (sscanf(GImGui->InputTextState.InitialText, "%f", &ref_v) < 1) + return; + + float op_v = 0.0f; + if (sscanf(buf, "%f", &op_v) < 1) + return; + + if (op == '+') + *v = ref_v + op_v; + else if (op == '*') + *v = ref_v * op_v; + else if (op == '/') + { + if (op_v == 0.0f) + return; + *v = ref_v / op_v; + } + else + *v = op_v; +} + +// Create text input in place of a slider (when CTRL+Clicking on slider) +static bool SliderFloatAsInputText(const char* label, float* v, ImGuiID id, int decimal_precision) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + + char text_buf[64]; + ImFormatString(text_buf, IM_ARRAYSIZE(text_buf), "%.*f", decimal_precision, *v); + + SetActiveId(g.ScalarAsInputTextId); + g.HoveredId = 0; + + // Our replacement widget will override the focus ID (registered previously to allow for a TAB focus to happen) + window->FocusItemUnregister(); + + bool value_changed = ImGui::InputText(label, text_buf, IM_ARRAYSIZE(text_buf), ImGuiInputTextFlags_CharsDecimal | ImGuiInputTextFlags_AutoSelectAll); + if (g.ScalarAsInputTextId == 0) + { + // First frame + IM_ASSERT(g.ActiveId == id); // InputText ID expected to match the Slider ID (else we'd need to store them both, which is also possible) + g.ScalarAsInputTextId = g.ActiveId; + g.HoveredId = id; + } + else if (g.ActiveId != g.ScalarAsInputTextId) + { + // Release + g.ScalarAsInputTextId = 0; + } + if (value_changed) + { + ApplyNumericalTextInput(text_buf, v); + } + return value_changed; +} + +// Parse display precision back from the display format string +static inline void ParseFormat(const char* fmt, int& decimal_precision) +{ + while ((fmt = strchr(fmt, '%')) != NULL) + { + fmt++; + if (fmt[0] == '%') { fmt++; continue; } // Ignore "%%" + while (*fmt >= '0' && *fmt <= '9') + fmt++; + if (*fmt == '.') + { + decimal_precision = atoi(fmt + 1); + if (decimal_precision < 0 || decimal_precision > 10) + decimal_precision = 3; + } + break; + } +} + +static inline float RoundScalar(float value, int decimal_precision) +{ + // Round past decimal precision + // 0: 1, 1: 0.1, 2: 0.01, etc. + // So when our value is 1.99999 with a precision of 0.001 we'll end up rounding to 2.0 + // FIXME: Investigate better rounding methods + const float min_step = 1.0f / powf(10.0f, (float)decimal_precision); + const float remainder = fmodf(value, min_step); + if (remainder <= min_step*0.5f) + value -= remainder; + else + value += (min_step - remainder); + return value; +} + +static bool SliderScalarBehavior(const ImRect& frame_bb, ImGuiID id, float* v, float v_min, float v_max, float power, int decimal_precision, bool horizontal) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + const ImGuiStyle& style = g.Style; + + // Draw frame + RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg), true, style.FrameRounding); + + const bool is_non_linear = fabsf(power - 1.0f) > 0.0001f; + + const float padding = horizontal ? style.FramePadding.x : style.FramePadding.y; + const float slider_sz = horizontal ? (frame_bb.GetWidth() - padding * 2.0f) : (frame_bb.GetHeight() - padding * 2.0f); + float grab_sz; + if (decimal_precision > 0) + grab_sz = ImMin(style.GrabMinSize, slider_sz); + else + grab_sz = ImMin(ImMax(1.0f * (slider_sz / (v_max-v_min+1.0f)), style.GrabMinSize), slider_sz); // Integer sliders, if possible have the grab size represent 1 unit + const float slider_usable_sz = slider_sz - grab_sz; + const float slider_usable_pos_min = (horizontal ? frame_bb.Min.x : frame_bb.Min.y) + padding + grab_sz*0.5f; + const float slider_usable_pos_max = (horizontal ? frame_bb.Max.x : frame_bb.Max.y) - padding - grab_sz*0.5f; + + bool value_changed = false; + + // For logarithmic sliders that cross over sign boundary we want the exponential increase to be symmetric around 0.0f + float linear_zero_pos = 0.0f; // 0.0->1.0f + if (v_min * v_max < 0.0f) + { + // Different sign + const float linear_dist_min_to_0 = powf(fabsf(0.0f - v_min), 1.0f/power); + const float linear_dist_max_to_0 = powf(fabsf(v_max - 0.0f), 1.0f/power); + linear_zero_pos = linear_dist_min_to_0 / (linear_dist_min_to_0+linear_dist_max_to_0); + } + else + { + // Same sign + linear_zero_pos = v_min < 0.0f ? 1.0f : 0.0f; + } + + // Process clicking on the slider + if (g.ActiveId == id) + { + if (g.IO.MouseDown[0]) + { + const float mouse_abs_pos = horizontal ? g.IO.MousePos.x : g.IO.MousePos.y; + float normalized_pos = ImClamp((mouse_abs_pos - slider_usable_pos_min) / slider_usable_sz, 0.0f, 1.0f); + if (!horizontal) + normalized_pos = 1.0f - normalized_pos; + + float new_value; + if (is_non_linear) + { + // Account for logarithmic scale on both sides of the zero + if (normalized_pos < linear_zero_pos) + { + // Negative: rescale to the negative range before powering + float a = 1.0f - (normalized_pos / linear_zero_pos); + a = powf(a, power); + new_value = ImLerp(ImMin(v_max,0.0f), v_min, a); + } + else + { + // Positive: rescale to the positive range before powering + float a; + if (fabsf(linear_zero_pos - 1.0f) > 1.e-6) + a = (normalized_pos - linear_zero_pos) / (1.0f - linear_zero_pos); + else + a = normalized_pos; + a = powf(a, power); + new_value = ImLerp(ImMax(v_min,0.0f), v_max, a); + } + } + else + { + // Linear slider + new_value = ImLerp(v_min, v_max, normalized_pos); + } + + // Round past decimal precision + new_value = RoundScalar(new_value, decimal_precision); + + if (*v != new_value) + { + *v = new_value; + value_changed = true; + } + } + else + { + SetActiveId(0); + } + } + + // Calculate slider grab positioning + float grab_t; + if (is_non_linear) + { + float v_clamped = ImClamp(*v, v_min, v_max); + if (v_clamped < 0.0f) + { + const float f = 1.0f - (v_clamped - v_min) / (ImMin(0.0f,v_max) - v_min); + grab_t = (1.0f - powf(f, 1.0f/power)) * linear_zero_pos; + } + else + { + const float f = (v_clamped - ImMax(0.0f,v_min)) / (v_max - ImMax(0.0f,v_min)); + grab_t = linear_zero_pos + powf(f, 1.0f/power) * (1.0f - linear_zero_pos); + } + } + else + { + // Linear slider + grab_t = (ImClamp(*v, v_min, v_max) - v_min) / (v_max - v_min); + } + + // Draw + if (!horizontal) + grab_t = 1.0f - grab_t; + const float grab_pos = ImLerp(slider_usable_pos_min, slider_usable_pos_max, grab_t); + ImRect grab_bb; + if (horizontal) + grab_bb = ImRect(ImVec2(grab_pos - grab_sz*0.5f, frame_bb.Min.y + 2.0f), ImVec2(grab_pos + grab_sz*0.5f, frame_bb.Max.y - 2.0f)); + else + grab_bb = ImRect(ImVec2(frame_bb.Min.x + 2.0f, grab_pos - grab_sz*0.5f), ImVec2(frame_bb.Max.x - 2.0f, grab_pos + grab_sz*0.5f)); + window->DrawList->AddRectFilled(grab_bb.Min, grab_bb.Max, window->Color(g.ActiveId == id ? ImGuiCol_SliderGrabActive : ImGuiCol_SliderGrab)); + + return value_changed; +} + +// Use power!=1.0 for logarithmic sliders. +// Adjust display_format to decorate the value with a prefix or a suffix. +// "%.3f" 1.234 +// "%5.2f secs" 01.23 secs +// "Gold: %.0f" Gold: 1 +bool ImGui::SliderFloat(const char* label, float* v, float v_min, float v_max, const char* display_format, float power) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const ImGuiID id = window->GetID(label); + const float w = ImGui::CalcItemWidth(); + + const ImVec2 label_size = CalcTextSize(label, NULL, true); + const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y) + style.FramePadding*2.0f); + const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f)); + + // NB- we don't call ItemSize() yet because we may turn into a text edit box below + if (!ItemAdd(total_bb, &id)) + { + ItemSize(total_bb, style.FramePadding.y); + return false; + } + + const bool hovered = IsHovered(frame_bb, id); + if (hovered) + g.HoveredId = id; + + if (!display_format) + display_format = "%.3f"; + int decimal_precision = 3; + ParseFormat(display_format, decimal_precision); + + // Tabbing or CTRL-clicking on Slider turns it into an input box + bool start_text_input = false; + const bool tab_focus_requested = window->FocusItemRegister(g.ActiveId == id); + if (tab_focus_requested || (hovered && g.IO.MouseClicked[0])) + { + SetActiveId(id); + FocusWindow(window); + + const bool is_ctrl_down = g.IO.KeyCtrl; + if (tab_focus_requested || is_ctrl_down) + { + start_text_input = true; + g.ScalarAsInputTextId = 0; + } + } + if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id)) + return SliderFloatAsInputText(label, v, id, decimal_precision); + + ItemSize(total_bb, style.FramePadding.y); + + // Actual slider behavior + render grab + const bool value_changed = SliderScalarBehavior(frame_bb, id, v, v_min, v_max, power, decimal_precision, true); + + // Display value using user-provided display format so user can add prefix/suffix/decorations to the value. + char value_buf[64]; + const char* value_buf_end = value_buf + ImFormatString(value_buf, IM_ARRAYSIZE(value_buf), display_format, *v); + const ImVec2 value_text_size = CalcTextSize(value_buf, value_buf_end, true); + RenderTextClipped(ImVec2(ImMax(frame_bb.Min.x + style.FramePadding.x, frame_bb.GetCenter().x - value_text_size.x*0.5f), frame_bb.Min.y + style.FramePadding.y), value_buf, value_buf_end, &value_text_size, frame_bb.Max); + + if (label_size.x > 0.0f) + RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label); + + return value_changed; +} + +bool ImGui::VSliderFloat(const char* label, const ImVec2& size, float* v, float v_min, float v_max, const char* display_format, float power) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const ImGuiID id = window->GetID(label); + + const ImVec2 label_size = CalcTextSize(label, NULL, true); + const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + size); + const ImRect bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f)); + + ItemSize(bb, style.FramePadding.y); + if (!ItemAdd(frame_bb, &id)) + return false; + + const bool hovered = IsHovered(frame_bb, id); + if (hovered) + g.HoveredId = id; + + if (!display_format) + display_format = "%.3f"; + int decimal_precision = 3; + ParseFormat(display_format, decimal_precision); + + if (hovered && g.IO.MouseClicked[0]) + { + SetActiveId(id); + FocusWindow(window); + } + + // Actual slider behavior + render grab + bool value_changed = SliderScalarBehavior(frame_bb, id, v, v_min, v_max, power, decimal_precision, false); + + // Display value using user-provided display format so user can add prefix/suffix/decorations to the value. + // For the vertical slider we allow centered text to overlap the frame padding + char value_buf[64]; + char* value_buf_end = value_buf + ImFormatString(value_buf, IM_ARRAYSIZE(value_buf), display_format, *v); + const ImVec2 value_text_size = CalcTextSize(value_buf, value_buf_end, true); + RenderTextClipped(ImVec2(ImMax(frame_bb.Min.x, frame_bb.GetCenter().x - value_text_size.x*0.5f), frame_bb.Min.y + style.FramePadding.y), value_buf, value_buf_end, &value_text_size, frame_bb.Max); + + if (label_size.x > 0.0f) + RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label); + + return value_changed; +} + +bool ImGui::SliderAngle(const char* label, float* v_rad, float v_degrees_min, float v_degrees_max) +{ + float v_deg = (*v_rad) * 360.0f / (2*PI); + bool value_changed = ImGui::SliderFloat(label, &v_deg, v_degrees_min, v_degrees_max, "%.0f deg", 1.0f); + *v_rad = v_deg * (2*PI) / 360.0f; + return value_changed; +} + +bool ImGui::SliderInt(const char* label, int* v, int v_min, int v_max, const char* display_format) +{ + if (!display_format) + display_format = "%.0f"; + float v_f = (float)*v; + bool value_changed = ImGui::SliderFloat(label, &v_f, (float)v_min, (float)v_max, display_format, 1.0f); + *v = (int)v_f; + return value_changed; +} + +bool ImGui::VSliderInt(const char* label, const ImVec2& size, int* v, int v_min, int v_max, const char* display_format) +{ + if (!display_format) + display_format = "%.0f"; + float v_f = (float)*v; + bool value_changed = ImGui::VSliderFloat(label, size, &v_f, (float)v_min, (float)v_max, display_format, 1.0f); + *v = (int)v_f; + return value_changed; +} + +// Add multiple sliders on 1 line for compact edition of multiple components +static bool SliderFloatN(const char* label, float* v, int components, float v_min, float v_max, const char* display_format, float power) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const float w_full = ImGui::CalcItemWidth(); + const float w_item_one = ImMax(1.0f, (float)(int)((w_full - (style.FramePadding.x*2.0f + style.ItemInnerSpacing.x)*(components-1)) / (float)components)); + const float w_item_last = ImMax(1.0f, (float)(int)(w_full - (w_item_one + style.FramePadding.x*2.0f + style.ItemInnerSpacing.x)*(components-1))); + + bool value_changed = false; + ImGui::BeginGroup(); + ImGui::PushID(label); + ImGui::PushItemWidth(w_item_one); + for (int i = 0; i < components; i++) + { + ImGui::PushID(i); + if (i + 1 == components) + { + ImGui::PopItemWidth(); + ImGui::PushItemWidth(w_item_last); + } + value_changed |= ImGui::SliderFloat("##v", &v[i], v_min, v_max, display_format, power); + ImGui::SameLine(0, (int)style.ItemInnerSpacing.x); + ImGui::PopID(); + } + ImGui::PopItemWidth(); + ImGui::PopID(); + + ImGui::TextUnformatted(label, FindTextDisplayEnd(label)); + ImGui::EndGroup(); + + return value_changed; +} + +bool ImGui::SliderFloat2(const char* label, float v[2], float v_min, float v_max, const char* display_format, float power) +{ + return SliderFloatN(label, v, 2, v_min, v_max, display_format, power); +} + +bool ImGui::SliderFloat3(const char* label, float v[3], float v_min, float v_max, const char* display_format, float power) +{ + return SliderFloatN(label, v, 3, v_min, v_max, display_format, power); +} + +bool ImGui::SliderFloat4(const char* label, float v[4], float v_min, float v_max, const char* display_format, float power) +{ + return SliderFloatN(label, v, 4, v_min, v_max, display_format, power); +} + +static bool SliderIntN(const char* label, int* v, int components, int v_min, int v_max, const char* display_format) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const float w_full = ImGui::CalcItemWidth(); + const float w_item_one = ImMax(1.0f, (float)(int)((w_full - (style.FramePadding.x*2.0f + style.ItemInnerSpacing.x)*(components-1)) / (float)components)); + const float w_item_last = ImMax(1.0f, (float)(int)(w_full - (w_item_one + style.FramePadding.x*2.0f + style.ItemInnerSpacing.x)*(components-1))); + + bool value_changed = false; + ImGui::BeginGroup(); + ImGui::PushID(label); + ImGui::PushItemWidth(w_item_one); + for (int i = 0; i < components; i++) + { + ImGui::PushID(i); + if (i + 1 == components) + { + ImGui::PopItemWidth(); + ImGui::PushItemWidth(w_item_last); + } + value_changed |= ImGui::SliderInt("##v", &v[i], v_min, v_max, display_format); + ImGui::SameLine(0, (int)style.ItemInnerSpacing.x); + ImGui::PopID(); + } + ImGui::PopItemWidth(); + ImGui::PopID(); + + ImGui::TextUnformatted(label, FindTextDisplayEnd(label)); + ImGui::EndGroup(); + + return value_changed; +} + +bool ImGui::SliderInt2(const char* label, int v[2], int v_min, int v_max, const char* display_format) +{ + return SliderIntN(label, v, 2, v_min, v_max, display_format); +} + +bool ImGui::SliderInt3(const char* label, int v[3], int v_min, int v_max, const char* display_format) +{ + return SliderIntN(label, v, 3, v_min, v_max, display_format); +} + +bool ImGui::SliderInt4(const char* label, int v[4], int v_min, int v_max, const char* display_format) +{ + return SliderIntN(label, v, 4, v_min, v_max, display_format); +} + +// FIXME-WIP: Work in progress. May change API / behavior. +static bool DragScalarBehavior(const ImRect& frame_bb, ImGuiID id, float* v, float v_speed, float v_min, float v_max, int decimal_precision, float power) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + const ImGuiStyle& style = g.Style; + + // Draw frame + const ImU32 frame_col = window->Color(g.ActiveId == id ? ImGuiCol_FrameBgActive : g.HoveredId == id ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg); + RenderFrame(frame_bb.Min, frame_bb.Max, frame_col, true, style.FrameRounding); + + bool value_changed = false; + + // Process clicking on the drag + if (g.ActiveId == id) + { + if (g.IO.MouseDown[0]) + { + if (g.ActiveIdIsJustActivated) + { + // Lock current value on click + g.DragCurrentValue = *v; + g.DragLastMouseDelta = ImVec2(0.f, 0.f); + } + + const ImVec2 mouse_drag_delta = ImGui::GetMouseDragDelta(0, 1.0f); + if (fabsf(mouse_drag_delta.x - g.DragLastMouseDelta.x) > 0.0f) + { + float speed = v_speed; + if (speed == 0.0f && (v_max - v_min) != 0.0f && (v_max - v_min) < FLT_MAX) + speed = (v_max - v_min) * g.DragSpeedDefaultRatio; + if (g.IO.KeyShift && g.DragSpeedScaleFast >= 0.0f) + speed = speed * g.DragSpeedScaleFast; + if (g.IO.KeyAlt && g.DragSpeedScaleSlow >= 0.0f) + speed = speed * g.DragSpeedScaleSlow; + + float v_cur = g.DragCurrentValue; + float delta = (mouse_drag_delta.x - g.DragLastMouseDelta.x) * speed; + if (fabsf(power - 1.0f) > 0.001f) + { + // Logarithmic curve on both side of 0.0 + float v0_abs = v_cur >= 0.0f ? v_cur : -v_cur; + float v0_sign = v_cur >= 0.0f ? 1.0f : -1.0f; + float v1 = powf(v0_abs, 1.0f / power) + (delta * v0_sign); + float v1_abs = v1 >= 0.0f ? v1 : -v1; + float v1_sign = v1 >= 0.0f ? 1.0f : -1.0f; // Crossed sign line + v_cur = powf(v1_abs, power) * v0_sign * v1_sign; // Reapply sign + } + else + { + v_cur += delta; + } + g.DragLastMouseDelta.x = mouse_drag_delta.x; + + // Clamp + if (v_min < v_max) + v_cur = ImClamp(v_cur, v_min, v_max); + g.DragCurrentValue = v_cur; + + // Round to user desired precision, then apply + v_cur = RoundScalar(v_cur, decimal_precision); + if (*v != v_cur) + { + *v = v_cur; + value_changed = true; + } + } + } + else + { + SetActiveId(0); + } + } + + return value_changed; +} + +bool ImGui::DragFloat(const char* label, float *v, float v_speed, float v_min, float v_max, const char* display_format, float power) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const ImGuiID id = window->GetID(label); + const float w = ImGui::CalcItemWidth(); + + const ImVec2 label_size = CalcTextSize(label, NULL, true); + const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y) + style.FramePadding*2.0f); + const ImRect inner_bb(frame_bb.Min + style.FramePadding, frame_bb.Max - style.FramePadding); + const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f)); + + // NB- we don't call ItemSize() yet because we may turn into a text edit box below + if (!ItemAdd(total_bb, &id)) + { + ItemSize(total_bb, style.FramePadding.y); + return false; + } + + const bool hovered = IsHovered(frame_bb, id); + if (hovered) + g.HoveredId = id; + + if (!display_format) + display_format = "%.3f"; + int decimal_precision = 3; + ParseFormat(display_format, decimal_precision); + + // Tabbing or CTRL-clicking on Drag turns it into an input box + bool start_text_input = false; + const bool tab_focus_requested = window->FocusItemRegister(g.ActiveId == id); + if (tab_focus_requested || (hovered && (g.IO.MouseClicked[0] | g.IO.MouseDoubleClicked[0]))) + { + SetActiveId(id); + FocusWindow(window); + + if (tab_focus_requested || g.IO.KeyCtrl || g.IO.MouseDoubleClicked[0]) + { + start_text_input = true; + g.ScalarAsInputTextId = 0; + } + } + if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id)) + return SliderFloatAsInputText(label, v, id, decimal_precision); + + ItemSize(total_bb, style.FramePadding.y); + + // Actual drag behavior + const bool value_changed = DragScalarBehavior(frame_bb, id, v, v_speed, v_min, v_max, decimal_precision, power); + + // Display value using user-provided display format so user can add prefix/suffix/decorations to the value. + char value_buf[64]; + const char* value_buf_end = value_buf + ImFormatString(value_buf, IM_ARRAYSIZE(value_buf), display_format, *v); + const ImVec2 value_text_size = CalcTextSize(value_buf, value_buf_end, true); + RenderTextClipped(ImVec2(ImMax(frame_bb.Min.x + style.FramePadding.x, inner_bb.GetCenter().x - value_text_size.x*0.5f), frame_bb.Min.y + style.FramePadding.y), value_buf, value_buf_end, &value_text_size, frame_bb.Max); + + if (label_size.x > 0.0f) + RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label); + + return value_changed; +} + +static bool DragFloatN(const char* label, float* v, int components, float v_speed, float v_min, float v_max, const char* display_format, float power) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const float w_full = ImGui::CalcItemWidth(); + const float w_item_one = ImMax(1.0f, (float)(int)((w_full - (style.FramePadding.x*2.0f + style.ItemInnerSpacing.x)*(components-1)) / (float)components)); + const float w_item_last = ImMax(1.0f, (float)(int)(w_full - (w_item_one + style.FramePadding.x*2.0f + style.ItemInnerSpacing.x)*(components-1))); + + bool value_changed = false; + ImGui::BeginGroup(); + ImGui::PushID(label); + ImGui::PushItemWidth(w_item_one); + for (int i = 0; i < components; i++) + { + ImGui::PushID(i); + if (i + 1 == components) + { + ImGui::PopItemWidth(); + ImGui::PushItemWidth(w_item_last); + } + value_changed |= ImGui::DragFloat("##v", &v[i], v_speed, v_min, v_max, display_format, power); + ImGui::SameLine(0, (int)style.ItemInnerSpacing.x); + ImGui::PopID(); + } + ImGui::PopItemWidth(); + ImGui::PopID(); + + ImGui::TextUnformatted(label, FindTextDisplayEnd(label)); + ImGui::EndGroup(); + + return value_changed; +} + +bool ImGui::DragFloat2(const char* label, float v[2], float v_speed, float v_min, float v_max, const char* display_format, float power) +{ + return DragFloatN(label, v, 2, v_speed, v_min, v_max, display_format, power); +} + +bool ImGui::DragFloat3(const char* label, float v[2], float v_speed, float v_min, float v_max, const char* display_format, float power) +{ + return DragFloatN(label, v, 3, v_speed, v_min, v_max, display_format, power); +} + +bool ImGui::DragFloat4(const char* label, float v[2], float v_speed, float v_min, float v_max, const char* display_format, float power) +{ + return DragFloatN(label, v, 4, v_speed, v_min, v_max, display_format, power); +} + +// NB: v_speed is float to allow adjusting the drag speed with more precision +bool ImGui::DragInt(const char* label, int* v, float v_speed, int v_min, int v_max, const char* display_format) +{ + if (!display_format) + display_format = "%.0f"; + float v_f = (float)*v; + bool value_changed = ImGui::DragFloat(label, &v_f, v_speed, (float)v_min, (float)v_max, display_format); + *v = (int)v_f; + return value_changed; +} + +static bool DragIntN(const char* label, int* v, int components, float v_speed, int v_min, int v_max, const char* display_format) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const float w_full = ImGui::CalcItemWidth(); + const float w_item_one = ImMax(1.0f, (float)(int)((w_full - (style.FramePadding.x*2.0f + style.ItemInnerSpacing.x)*(components-1)) / (float)components)); + const float w_item_last = ImMax(1.0f, (float)(int)(w_full - (w_item_one + style.FramePadding.x*2.0f + style.ItemInnerSpacing.x)*(components-1))); + + bool value_changed = false; + ImGui::BeginGroup(); + ImGui::PushID(label); + ImGui::PushItemWidth(w_item_one); + for (int i = 0; i < components; i++) + { + ImGui::PushID(i); + if (i + 1 == components) + { + ImGui::PopItemWidth(); + ImGui::PushItemWidth(w_item_last); + } + value_changed |= ImGui::DragInt("##v", &v[i], v_speed, v_min, v_max, display_format); + ImGui::SameLine(0, (int)style.ItemInnerSpacing.x); + ImGui::PopID(); + } + ImGui::PopItemWidth(); + ImGui::PopID(); + + ImGui::TextUnformatted(label, FindTextDisplayEnd(label)); + ImGui::EndGroup(); + + return value_changed; +} + +bool ImGui::DragInt2(const char* label, int v[2], float v_speed, int v_min, int v_max, const char* display_format) +{ + return DragIntN(label, v, 2, v_speed, v_min, v_max, display_format); +} + +bool ImGui::DragInt3(const char* label, int v[3], float v_speed, int v_min, int v_max, const char* display_format) +{ + return DragIntN(label, v, 3, v_speed, v_min, v_max, display_format); +} + +bool ImGui::DragInt4(const char* label, int v[4], float v_speed, int v_min, int v_max, const char* display_format) +{ + return DragIntN(label, v, 4, v_speed, v_min, v_max, display_format); +} + +enum ImGuiPlotType +{ + ImGuiPlotType_Lines, + ImGuiPlotType_Histogram +}; + +static void Plot(ImGuiPlotType plot_type, const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return; + + const ImGuiStyle& style = g.Style; + + const ImVec2 label_size = ImGui::CalcTextSize(label, NULL, true); + if (graph_size.x == 0.0f) + graph_size.x = ImGui::CalcItemWidth() + (style.FramePadding.x * 2); + if (graph_size.y == 0.0f) + graph_size.y = label_size.y + (style.FramePadding.y * 2); + + const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(graph_size.x, graph_size.y)); + const ImRect inner_bb(frame_bb.Min + style.FramePadding, frame_bb.Max - style.FramePadding); + const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0)); + ItemSize(total_bb, style.FramePadding.y); + if (!ItemAdd(total_bb, NULL)) + return; + + // Determine scale from values if not specified + if (scale_min == FLT_MAX || scale_max == FLT_MAX) + { + float v_min = FLT_MAX; + float v_max = -FLT_MAX; + for (int i = 0; i < values_count; i++) + { + const float v = values_getter(data, i); + v_min = ImMin(v_min, v); + v_max = ImMax(v_max, v); + } + if (scale_min == FLT_MAX) + scale_min = v_min; + if (scale_max == FLT_MAX) + scale_max = v_max; + } + + RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg), true, style.FrameRounding); + + int res_w = ImMin((int)graph_size.x, values_count); + if (plot_type == ImGuiPlotType_Lines) + res_w -= 1; + + // Tooltip on hover + int v_hovered = -1; + if (IsMouseHoveringRect(inner_bb)) + { + const float t = ImClamp((g.IO.MousePos.x - inner_bb.Min.x) / (inner_bb.Max.x - inner_bb.Min.x), 0.0f, 0.9999f); + const int v_idx = (int)(t * (values_count + ((plot_type == ImGuiPlotType_Lines) ? -1 : 0))); + IM_ASSERT(v_idx >= 0 && v_idx < values_count); + + const float v0 = values_getter(data, (v_idx + values_offset) % values_count); + const float v1 = values_getter(data, (v_idx + 1 + values_offset) % values_count); + if (plot_type == ImGuiPlotType_Lines) + ImGui::SetTooltip("%d: %8.4g\n%d: %8.4g", v_idx, v0, v_idx+1, v1); + else if (plot_type == ImGuiPlotType_Histogram) + ImGui::SetTooltip("%d: %8.4g", v_idx, v0); + v_hovered = v_idx; + } + + const float t_step = 1.0f / (float)res_w; + + float v0 = values_getter(data, (0 + values_offset) % values_count); + float t0 = 0.0f; + ImVec2 p0 = ImVec2( t0, 1.0f - ImSaturate((v0 - scale_min) / (scale_max - scale_min)) ); + + const ImU32 col_base = window->Color((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLines : ImGuiCol_PlotHistogram); + const ImU32 col_hovered = window->Color((plot_type == ImGuiPlotType_Lines) ? ImGuiCol_PlotLinesHovered : ImGuiCol_PlotHistogramHovered); + + for (int n = 0; n < res_w; n++) + { + const float t1 = t0 + t_step; + const int v_idx = (int)(t0 * values_count); + IM_ASSERT(v_idx >= 0 && v_idx < values_count); + const float v1 = values_getter(data, (v_idx + values_offset + 1) % values_count); + const ImVec2 p1 = ImVec2( t1, 1.0f - ImSaturate((v1 - scale_min) / (scale_max - scale_min)) ); + + // NB- Draw calls are merged together by the DrawList system. + if (plot_type == ImGuiPlotType_Lines) + window->DrawList->AddLine(ImLerp(inner_bb.Min, inner_bb.Max, p0), ImLerp(inner_bb.Min, inner_bb.Max, p1), v_hovered == v_idx ? col_hovered : col_base); + else if (plot_type == ImGuiPlotType_Histogram) + window->DrawList->AddRectFilled(ImLerp(inner_bb.Min, inner_bb.Max, p0), ImLerp(inner_bb.Min, inner_bb.Max, ImVec2(p1.x, 1.0f))+ImVec2(-1,0), v_hovered == v_idx ? col_hovered : col_base); + + t0 = t1; + p0 = p1; + } + + // Text overlay + if (overlay_text) + RenderText(ImVec2(inner_bb.GetCenter().x - ImGui::CalcTextSize(overlay_text, NULL, true).x*0.5f, frame_bb.Min.y + style.FramePadding.y), overlay_text); + + RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label); +} + +struct ImGuiPlotArrayGetterData +{ + const float* Values; + size_t Stride; + + ImGuiPlotArrayGetterData(const float* values, size_t stride) { Values = values; Stride = stride; } +}; + +static float Plot_ArrayGetter(void* data, int idx) +{ + ImGuiPlotArrayGetterData* plot_data = (ImGuiPlotArrayGetterData*)data; + const float v = *(float*)(void*)((unsigned char*)plot_data->Values + (size_t)idx * plot_data->Stride); + return v; +} + +void ImGui::PlotLines(const char* label, const float* values, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size, size_t stride) +{ + ImGuiPlotArrayGetterData data(values, stride); + Plot(ImGuiPlotType_Lines, label, &Plot_ArrayGetter, (void*)&data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size); +} + +void ImGui::PlotLines(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size) +{ + Plot(ImGuiPlotType_Lines, label, values_getter, data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size); +} + +void ImGui::PlotHistogram(const char* label, const float* values, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size, size_t stride) +{ + ImGuiPlotArrayGetterData data(values, stride); + Plot(ImGuiPlotType_Histogram, label, &Plot_ArrayGetter, (void*)&data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size); +} + +void ImGui::PlotHistogram(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset, const char* overlay_text, float scale_min, float scale_max, ImVec2 graph_size) +{ + Plot(ImGuiPlotType_Histogram, label, values_getter, data, values_count, values_offset, overlay_text, scale_min, scale_max, graph_size); +} + +bool ImGui::Checkbox(const char* label, bool* v) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const ImGuiID id = window->GetID(label); + const ImVec2 label_size = CalcTextSize(label, NULL, true); + + const ImRect check_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(label_size.y + style.FramePadding.y*2, label_size.y + style.FramePadding.y*2)); + ItemSize(check_bb, style.FramePadding.y); + + ImRect total_bb = check_bb; + if (label_size.x > 0) + SameLine(0, (int)style.ItemInnerSpacing.x); + const ImRect text_bb(window->DC.CursorPos + ImVec2(0,style.FramePadding.y), window->DC.CursorPos + ImVec2(0,style.FramePadding.y) + label_size); + if (label_size.x > 0) + { + ItemSize(ImVec2(text_bb.GetWidth(), check_bb.GetHeight()), style.FramePadding.y); + total_bb = ImRect(ImMin(check_bb.Min, text_bb.Min), ImMax(check_bb.Max, text_bb.Max)); + } + + if (!ItemAdd(total_bb, &id)) + return false; + + bool hovered, held; + bool pressed = ButtonBehavior(total_bb, id, &hovered, &held, true); + if (pressed) + *v = !(*v); + + RenderFrame(check_bb.Min, check_bb.Max, window->Color((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), true, style.FrameRounding); + if (*v) + { + const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight()); + const float pad = check_sz < 8.0f ? 1.0f : check_sz < 13.0f ? 2.0f : 3.0f; + window->DrawList->AddRectFilled(check_bb.Min+ImVec2(pad,pad), check_bb.Max-ImVec2(pad,pad), window->Color(ImGuiCol_CheckMark), style.FrameRounding); + } + + if (g.LogEnabled) + LogText(text_bb.GetTL(), *v ? "[x]" : "[ ]"); + RenderText(text_bb.GetTL(), label); + + return pressed; +} + +bool ImGui::CheckboxFlags(const char* label, unsigned int* flags, unsigned int flags_value) +{ + bool v = (*flags & flags_value) ? true : false; + bool pressed = ImGui::Checkbox(label, &v); + if (v) + *flags |= flags_value; + else + *flags &= ~flags_value; + return pressed; +} + +bool ImGui::RadioButton(const char* label, bool active) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const ImGuiID id = window->GetID(label); + const ImVec2 label_size = CalcTextSize(label, NULL, true); + + const ImRect check_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(label_size.y + style.FramePadding.y*2-1, label_size.y + style.FramePadding.y*2-1)); + ItemSize(check_bb, style.FramePadding.y); + + ImRect total_bb = check_bb; + if (label_size.x > 0) + SameLine(0, (int)style.ItemInnerSpacing.x); + const ImRect text_bb(window->DC.CursorPos + ImVec2(0, style.FramePadding.y), window->DC.CursorPos + ImVec2(0, style.FramePadding.y) + label_size); + if (label_size.x > 0) + { + ItemSize(ImVec2(text_bb.GetWidth(), check_bb.GetHeight()), style.FramePadding.y); + total_bb.Add(text_bb); + } + + if (!ItemAdd(total_bb, &id)) + return false; + + ImVec2 center = check_bb.GetCenter(); + center.x = (float)(int)center.x + 0.5f; + center.y = (float)(int)center.y + 0.5f; + const float radius = check_bb.GetHeight() * 0.5f; + + bool hovered, held; + bool pressed = ButtonBehavior(total_bb, id, &hovered, &held, true); + + window->DrawList->AddCircleFilled(center, radius, window->Color((held && hovered) ? ImGuiCol_FrameBgActive : hovered ? ImGuiCol_FrameBgHovered : ImGuiCol_FrameBg), 16); + if (active) + { + const float check_sz = ImMin(check_bb.GetWidth(), check_bb.GetHeight()); + const float pad = check_sz < 8.0f ? 1.0f : check_sz < 13.0f ? 2.0f : 3.0f; + window->DrawList->AddCircleFilled(center, radius-pad, window->Color(ImGuiCol_CheckMark), 16); + } + + if (window->Flags & ImGuiWindowFlags_ShowBorders) + { + window->DrawList->AddCircle(center+ImVec2(1,1), radius, window->Color(ImGuiCol_BorderShadow), 16); + window->DrawList->AddCircle(center, radius, window->Color(ImGuiCol_Border), 16); + } + + if (g.LogEnabled) + LogText(text_bb.GetTL(), active ? "(x)" : "( )"); + RenderText(text_bb.GetTL(), label); + + return pressed; +} + +bool ImGui::RadioButton(const char* label, int* v, int v_button) +{ + const bool pressed = ImGui::RadioButton(label, *v == v_button); + if (pressed) + { + *v = v_button; + } + return pressed; +} + +// Wrapper for stb_textedit.h to edit text (our wrapper is for: statically sized buffer, single-line, wchar characters. InputText converts between UTF-8 and wchar) +static int STB_TEXTEDIT_STRINGLEN(const STB_TEXTEDIT_STRING* obj) { return (int)ImStrlenW(obj->Text); } +static ImWchar STB_TEXTEDIT_GETCHAR(const STB_TEXTEDIT_STRING* obj, int idx) { return obj->Text[idx]; } +static float STB_TEXTEDIT_GETWIDTH(STB_TEXTEDIT_STRING* obj, int line_start_idx, int char_idx) { (void)line_start_idx; return obj->Font->CalcTextSizeW(obj->FontSize, FLT_MAX, &obj->Text[char_idx], &obj->Text[char_idx]+1, NULL).x; } +static int STB_TEXTEDIT_KEYTOTEXT(int key) { return key >= 0x10000 ? 0 : key; } +static ImWchar STB_TEXTEDIT_NEWLINE = '\n'; +static void STB_TEXTEDIT_LAYOUTROW(StbTexteditRow* r, STB_TEXTEDIT_STRING* obj, int line_start_idx) +{ + const ImWchar* text_remaining = NULL; + const ImVec2 size = obj->Font->CalcTextSizeW(obj->FontSize, FLT_MAX, obj->Text + line_start_idx, NULL, &text_remaining); + r->x0 = 0.0f; + r->x1 = size.x; + r->baseline_y_delta = size.y; + r->ymin = 0.0f; + r->ymax = size.y; + r->num_chars = (int)(text_remaining - (obj->Text + line_start_idx)); +} + +static bool is_separator(unsigned int c) { return c==',' || c==';' || c=='(' || c==')' || c=='{' || c=='}' || c=='[' || c==']' || c=='|'; } +#define STB_TEXTEDIT_IS_SPACE(CH) ( ImCharIsSpace((unsigned int)CH) || is_separator((unsigned int)CH) ) +static void STB_TEXTEDIT_DELETECHARS(STB_TEXTEDIT_STRING* obj, int pos, int n) +{ + ImWchar* dst = obj->Text + pos; + + // We maintain our buffer length in both UTF-8 and wchar formats + obj->CurLenA -= ImTextCountUtf8BytesFromStr(dst, dst + n); + obj->CurLenW -= n; + + // Offset remaining text + const ImWchar* src = obj->Text + pos + n; + while (ImWchar c = *src++) + *dst++ = c; + *dst = '\0'; +} + +static bool STB_TEXTEDIT_INSERTCHARS(STB_TEXTEDIT_STRING* obj, int pos, const ImWchar* new_text, int new_text_len) +{ + const size_t text_len = obj->CurLenW; + if ((size_t)new_text_len + text_len + 1 > IM_ARRAYSIZE(obj->Text)) + return false; + + const int new_text_len_utf8 = ImTextCountUtf8BytesFromStr(new_text, new_text + new_text_len); + if ((size_t)new_text_len_utf8 + obj->CurLenA + 1 > obj->BufSizeA) + return false; + + if (pos != (int)text_len) + memmove(obj->Text + (size_t)pos + new_text_len, obj->Text + (size_t)pos, (text_len - (size_t)pos) * sizeof(ImWchar)); + memcpy(obj->Text + (size_t)pos, new_text, (size_t)new_text_len * sizeof(ImWchar)); + + obj->CurLenW += new_text_len; + obj->CurLenA += new_text_len_utf8; + obj->Text[obj->CurLenW] = '\0'; + + return true; +} + +// We don't use an enum so we can build even with conflicting symbols (if another user of stb_textedit.h leak their STB_TEXTEDIT_K_* symbols) +#define STB_TEXTEDIT_K_LEFT 0x10000 // keyboard input to move cursor left +#define STB_TEXTEDIT_K_RIGHT 0x10001 // keyboard input to move cursor right +#define STB_TEXTEDIT_K_UP 0x10002 // keyboard input to move cursor up +#define STB_TEXTEDIT_K_DOWN 0x10003 // keyboard input to move cursor down +#define STB_TEXTEDIT_K_LINESTART 0x10004 // keyboard input to move cursor to start of line +#define STB_TEXTEDIT_K_LINEEND 0x10005 // keyboard input to move cursor to end of line +#define STB_TEXTEDIT_K_TEXTSTART 0x10006 // keyboard input to move cursor to start of text +#define STB_TEXTEDIT_K_TEXTEND 0x10007 // keyboard input to move cursor to end of text +#define STB_TEXTEDIT_K_DELETE 0x10008 // keyboard input to delete selection or character under cursor +#define STB_TEXTEDIT_K_BACKSPACE 0x10009 // keyboard input to delete selection or character left of cursor +#define STB_TEXTEDIT_K_UNDO 0x1000A // keyboard input to perform undo +#define STB_TEXTEDIT_K_REDO 0x1000B // keyboard input to perform redo +#define STB_TEXTEDIT_K_WORDLEFT 0x1000C // keyboard input to move cursor left one word +#define STB_TEXTEDIT_K_WORDRIGHT 0x1000D // keyboard input to move cursor right one word +#define STB_TEXTEDIT_K_SHIFT 0x20000 + +#ifdef IMGUI_STB_NAMESPACE +namespace IMGUI_STB_NAMESPACE +{ +#endif +#define STB_TEXTEDIT_IMPLEMENTATION +#include "stb_textedit.h" +#ifdef IMGUI_STB_NAMESPACE +} +#endif + +void ImGuiTextEditState::OnKeyPressed(int key) +{ + stb_textedit_key(this, &StbState, key); + CursorAnimReset(); +} + +void ImGuiTextEditState::UpdateScrollOffset() +{ + // Scroll in chunks of quarter width + const float scroll_x_increment = Width * 0.25f; + const float cursor_offset_x = Font->CalcTextSizeW(FontSize, FLT_MAX, Text, Text+StbState.cursor, NULL).x; + + // If widget became bigger than text (because of a resize), reset horizontal scrolling + if (ScrollX > 0.0f) + { + const float text_width = cursor_offset_x + Font->CalcTextSizeW(FontSize, FLT_MAX, Text+StbState.cursor, NULL, NULL).x; + if (text_width < Width) + { + ScrollX = 0.0f; + return; + } + } + + if (cursor_offset_x < ScrollX) + ScrollX = ImMax(0.0f, cursor_offset_x - scroll_x_increment); + else if (cursor_offset_x - Width >= ScrollX) + ScrollX = cursor_offset_x - Width + scroll_x_increment; +} + +ImVec2 ImGuiTextEditState::CalcDisplayOffsetFromCharIdx(int i) const +{ + const ImWchar* text_start = GetTextPointerClippedW(Font, FontSize, Text, ScrollX, NULL); + const ImWchar* text_end = (Text+i >= text_start) ? Text+i : text_start; // Clip if requested character is outside of display + IM_ASSERT(text_end >= text_start); + + const ImVec2 offset = Font->CalcTextSizeW(FontSize, Width+1, text_start, text_end, NULL); + return offset; +} + +// [Static] +const char* ImGuiTextEditState::GetTextPointerClippedA(ImFont* font, float font_size, const char* text, float width, ImVec2* out_text_size) +{ + if (width <= 0.0f) + return text; + + const char* text_clipped_end = NULL; + const ImVec2 text_size = font->CalcTextSizeA(font_size, width, 0.0f, text, NULL, &text_clipped_end); + if (out_text_size) + *out_text_size = text_size; + return text_clipped_end; +} + +// [Static] +const ImWchar* ImGuiTextEditState::GetTextPointerClippedW(ImFont* font, float font_size, const ImWchar* text, float width, ImVec2* out_text_size) +{ + if (width <= 0.0f) + return text; + + const ImWchar* text_clipped_end = NULL; + const ImVec2 text_size = font->CalcTextSizeW(font_size, width, text, NULL, &text_clipped_end); + if (out_text_size) + *out_text_size = text_size; + return text_clipped_end; +} + +// [Static] +void ImGuiTextEditState::RenderTextScrolledClipped(ImFont* font, float font_size, const char* buf, ImVec2 pos, float width, float scroll_x) +{ + ImGuiWindow* window = GetCurrentWindow(); + const ImU32 font_color = window->Color(ImGuiCol_Text); + //window->DrawList->AddLine(pos, pos+ImVec2(width,0), 0xFF00FFFF); + + // Determine start and end of visible string + // FIXME-OPT: This is pretty slow for what it does. + const char* text_start = scroll_x <= 0.0f ? buf : GetTextPointerClippedA(font, font_size, buf, scroll_x, NULL); + const char* text_end = GetTextPointerClippedA(font, font_size, text_start, width + 1, NULL); // +1 to allow character spacing to fit outside the allowed width + window->DrawList->AddText(font, font_size, pos, font_color, text_start, text_end); + + // Log as text + if (GImGui->LogEnabled) + LogText(pos, buf, NULL); +} + +bool ImGui::InputFloat(const char* label, float *v, float step, float step_fast, int decimal_precision, ImGuiInputTextFlags extra_flags) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const float w = ImGui::CalcItemWidth(); + const ImVec2 label_size = CalcTextSize(label, NULL, true); + const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y) + style.FramePadding*2.0f); + + ImGui::BeginGroup(); + ImGui::PushID(label); + const ImVec2 button_sz = ImVec2(g.FontSize, g.FontSize) + style.FramePadding * 2; + if (step > 0.0f) + ImGui::PushItemWidth(ImMax(1.0f, w - (button_sz.x + style.ItemInnerSpacing.x)*2)); + + char buf[64]; + if (decimal_precision < 0) + ImFormatString(buf, IM_ARRAYSIZE(buf), "%f", *v); // Ideally we'd have a minimum decimal precision of 1 to visually denote that it is a float, while hiding non-significant digits? + else + ImFormatString(buf, IM_ARRAYSIZE(buf), "%.*f", decimal_precision, *v); + bool value_changed = false; + const ImGuiInputTextFlags flags = extra_flags | (ImGuiInputTextFlags_CharsDecimal|ImGuiInputTextFlags_AutoSelectAll); + if (ImGui::InputText("", buf, IM_ARRAYSIZE(buf), flags)) + { + ApplyNumericalTextInput(buf, v); + value_changed = true; + } + + // Step buttons + if (step > 0.0f) + { + ImGui::PopItemWidth(); + ImGui::SameLine(0, (int)style.ItemInnerSpacing.x); + if (ImGui::Button("-", button_sz, true)) + { + *v -= g.IO.KeyCtrl && step_fast > 0.0f ? step_fast : step; + value_changed = true; + } + ImGui::SameLine(0, (int)style.ItemInnerSpacing.x); + if (ImGui::Button("+", button_sz, true)) + { + *v += g.IO.KeyCtrl && step_fast > 0.0f ? step_fast : step; + value_changed = true; + } + } + + ImGui::PopID(); + + if (label_size.x > 0) + { + ImGui::SameLine(0, (int)style.ItemInnerSpacing.x); + RenderText(ImVec2(window->DC.CursorPos.x, window->DC.CursorPos.y + style.FramePadding.y), label); + ItemSize(label_size, style.FramePadding.y); + } + + ImGui::EndGroup(); + + return value_changed; +} + +bool ImGui::InputInt(const char* label, int *v, int step, int step_fast, ImGuiInputTextFlags extra_flags) +{ + float f = (float)*v; + const bool value_changed = ImGui::InputFloat(label, &f, (float)step, (float)step_fast, 0, extra_flags); + if (value_changed) + *v = (int)f; + return value_changed; +} + +// Public API to manipulate UTF-8 text +// We expose UTF-8 to the user (unlike the STB_TEXTEDIT_* functions which are manipulating wchar) +void ImGuiTextEditCallbackData::DeleteChars(int pos, int bytes_count) +{ + char* dst = Buf + pos; + const char* src = Buf + pos + bytes_count; + while (char c = *src++) + *dst++ = c; + *dst = '\0'; + + BufDirty = true; + if (CursorPos + bytes_count >= pos) + CursorPos -= bytes_count; + else if (CursorPos >= pos) + CursorPos = pos; + SelectionStart = SelectionEnd = CursorPos; +} + +void ImGuiTextEditCallbackData::InsertChars(int pos, const char* new_text, const char* new_text_end) +{ + const size_t text_len = strlen(Buf); + if (!new_text_end) + new_text_end = new_text + strlen(new_text); + const size_t new_text_len = (size_t)(new_text_end - new_text); + + if (new_text_len + text_len + 1 >= BufSize) + return; + + size_t upos = (size_t)pos; + if (text_len != upos) + memmove(Buf + upos + new_text_len, Buf + upos, text_len - upos); + memcpy(Buf + upos, new_text, new_text_len * sizeof(char)); + Buf[text_len + new_text_len] = '\0'; + + BufDirty = true; + if (CursorPos >= pos) + CursorPos += (int)new_text_len; + SelectionStart = SelectionEnd = CursorPos; +} + +// Return false to discard a character. +static bool InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiTextEditCallback callback, void* user_data) +{ + unsigned int c = *p_char; + + if (c < 128 && c != ' ' && !isprint((int)(c & 0xFF))) + return false; + + if (c >= 0xE000 && c <= 0xF8FF) // Filter private Unicode range. I don't imagine anybody would want to input them. GLFW on OSX seems to send private characters for special keys like arrow keys. + return false; + + if (flags & (ImGuiInputTextFlags_CharsDecimal | ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase | ImGuiInputTextFlags_CharsNoBlank)) + { + if (flags & ImGuiInputTextFlags_CharsDecimal) + if (!(c >= '0' && c <= '9') && (c != '.') && (c != '-') && (c != '+') && (c != '*') && (c != '/')) + return false; + + if (flags & ImGuiInputTextFlags_CharsHexadecimal) + if (!(c >= '0' && c <= '9') && !(c >= 'a' && c <= 'f') && !(c >= 'A' && c <= 'F')) + return false; + + if (flags & ImGuiInputTextFlags_CharsUppercase) + if (c >= 'a' && c <= 'z') + *p_char = (c += (unsigned int)('A'-'a')); + + if (flags & ImGuiInputTextFlags_CharsNoBlank) + if (ImCharIsSpace(c)) + return false; + } + + if (flags & ImGuiInputTextFlags_CallbackCharFilter) + { + ImGuiTextEditCallbackData callback_data; + memset(&callback_data, 0, sizeof(ImGuiTextEditCallbackData)); + callback_data.EventFlag = ImGuiInputTextFlags_CallbackCharFilter; + callback_data.EventChar = (ImWchar)c; + callback_data.Flags = flags; + callback_data.UserData = user_data; + if (callback(&callback_data) != 0) + return false; + *p_char = callback_data.EventChar; + if (!callback_data.EventChar) + return false; + } + + return true; +} + +// Edit a string of text +bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlags flags, ImGuiTextEditCallback callback, void* user_data) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiIO& io = g.IO; + const ImGuiStyle& style = g.Style; + + const ImGuiID id = window->GetID(label); + const float w = ImGui::CalcItemWidth(); + + const ImVec2 label_size = CalcTextSize(label, NULL, true); + const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y) + style.FramePadding*2.0f); + const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? (style.ItemInnerSpacing.x + label_size.x) : 0.0f, 0.0f)); + ItemSize(total_bb, style.FramePadding.y); + if (!ItemAdd(total_bb, &id)) + return false; + + // NB: we are only allowed to access 'edit_state' if we are the active widget. + ImGuiTextEditState& edit_state = g.InputTextState; + + const bool is_ctrl_down = io.KeyCtrl; + const bool is_shift_down = io.KeyShift; + const bool focus_requested = window->FocusItemRegister(g.ActiveId == id, (flags & ImGuiInputTextFlags_CallbackCompletion) == 0); // Using completion callback disable keyboard tabbing + const bool focus_requested_by_code = focus_requested && (window->FocusIdxAllCounter == window->FocusIdxAllRequestCurrent); + const bool focus_requested_by_tab = focus_requested && !focus_requested_by_code; + + const bool hovered = IsHovered(frame_bb, id); + if (hovered) + { + g.HoveredId = id; + g.MouseCursor = ImGuiMouseCursor_TextInput; + } + const bool user_clicked = hovered && io.MouseClicked[0]; + + bool select_all = (g.ActiveId != id) && (flags & ImGuiInputTextFlags_AutoSelectAll) != 0; + if (focus_requested || user_clicked) + { + if (g.ActiveId != id) + { + // Start edition + // Take a copy of the initial buffer value (both in original UTF-8 format and converted to wchar) + // From the moment we focused we are ignoring the content of 'buf' + ImFormatString(edit_state.InitialText, IM_ARRAYSIZE(edit_state.InitialText), "%s", buf); + const char* buf_end = NULL; + edit_state.CurLenW = ImTextStrFromUtf8(edit_state.Text, IM_ARRAYSIZE(edit_state.Text), buf, NULL, &buf_end); + edit_state.CurLenA = buf_end - buf; // We can't get the result from ImFormatString() above because it is not UTF-8 aware. Here we'll cut off malformed UTF-8. + edit_state.Width = w + style.FramePadding.x; + edit_state.InputCursorScreenPos = ImVec2(-1.f,-1.f); + edit_state.CursorAnimReset(); + + if (edit_state.Id != id) + { + edit_state.Id = id; + edit_state.ScrollX = 0.0f; + stb_textedit_initialize_state(&edit_state.StbState, true); + if (focus_requested_by_code) + select_all = true; + } + else + { + // Recycle existing cursor/selection/undo stack but clamp position + // Note a single mouse click will override the cursor/position immediately by calling stb_textedit_click handler. + edit_state.StbState.cursor = ImMin(edit_state.StbState.cursor, (int)edit_state.CurLenW); + edit_state.StbState.select_start = ImMin(edit_state.StbState.select_start, (int)edit_state.CurLenW); + edit_state.StbState.select_end = ImMin(edit_state.StbState.select_end, (int)edit_state.CurLenW); + } + if (focus_requested_by_tab || (user_clicked && is_ctrl_down)) + select_all = true; + } + SetActiveId(id); + FocusWindow(window); + } + else if (io.MouseClicked[0]) + { + // Release focus when we click outside + if (g.ActiveId == id) + { + SetActiveId(0); + } + } + + // Although we are active we don't prevent mouse from hovering other elements unless we are interacting right now with the widget. + // Down the line we should have a cleaner concept of focused vs active in the library. + if (g.ActiveId == id) + g.ActiveIdIsFocusedOnly = !io.MouseDown[0]; + + bool value_changed = false; + bool cancel_edit = false; + bool enter_pressed = false; + if (g.ActiveId == id) + //if (edit_state.Id == id) // Works, but double-click to select-all sets cursors to end which in turn tends to scroll toward the right when shrinking widget. + { + // Update some data if we are active or last active + edit_state.Width = w + style.FramePadding.x; + edit_state.BufSizeA = buf_size; + edit_state.Font = g.Font; + edit_state.FontSize = g.FontSize; + edit_state.UpdateScrollOffset(); + } + if (g.ActiveId == id) + { + // Edit in progress + const float mx = g.IO.MousePos.x - frame_bb.Min.x - style.FramePadding.x; + const float my = g.FontSize*0.5f; // Flatten mouse because we are doing a single-line edit + + if (select_all || (hovered && io.MouseDoubleClicked[0])) + { + edit_state.SelectAll(); + edit_state.SelectedAllMouseLock = true; + } + else if (io.MouseClicked[0] && !edit_state.SelectedAllMouseLock) + { + stb_textedit_click(&edit_state, &edit_state.StbState, mx + edit_state.ScrollX, my); + edit_state.CursorAnimReset(); + } + else if (io.MouseDown[0] && !edit_state.SelectedAllMouseLock) + { + stb_textedit_drag(&edit_state, &edit_state.StbState, mx + edit_state.ScrollX, my); + edit_state.CursorAnimReset(); + } + if (edit_state.SelectedAllMouseLock && !io.MouseDown[0]) + edit_state.SelectedAllMouseLock = false; + + if (g.IO.InputCharacters[0]) + { + // Process text input (before we check for Return because using some IME will effectively send a Return?) + for (int n = 0; n < IM_ARRAYSIZE(g.IO.InputCharacters) && g.IO.InputCharacters[n]; n++) + { + unsigned int c = (unsigned int)g.IO.InputCharacters[n]; + if (c) + { + // Insert character if they pass filtering + if (!InputTextFilterCharacter(&c, flags, callback, user_data)) + continue; + edit_state.OnKeyPressed((int)c); + } + } + + // Consume characters + memset(g.IO.InputCharacters, 0, sizeof(g.IO.InputCharacters)); + } + + const int k_mask = (is_shift_down ? STB_TEXTEDIT_K_SHIFT : 0); + if (IsKeyPressedMap(ImGuiKey_LeftArrow)) { edit_state.OnKeyPressed(is_ctrl_down ? STB_TEXTEDIT_K_WORDLEFT | k_mask : STB_TEXTEDIT_K_LEFT | k_mask); } + else if (IsKeyPressedMap(ImGuiKey_RightArrow)) { edit_state.OnKeyPressed(is_ctrl_down ? STB_TEXTEDIT_K_WORDRIGHT | k_mask : STB_TEXTEDIT_K_RIGHT | k_mask); } + else if (IsKeyPressedMap(ImGuiKey_Home)) { edit_state.OnKeyPressed(is_ctrl_down ? STB_TEXTEDIT_K_TEXTSTART | k_mask : STB_TEXTEDIT_K_LINESTART | k_mask); } + else if (IsKeyPressedMap(ImGuiKey_End)) { edit_state.OnKeyPressed(is_ctrl_down ? STB_TEXTEDIT_K_TEXTEND | k_mask : STB_TEXTEDIT_K_LINEEND | k_mask); } + else if (IsKeyPressedMap(ImGuiKey_Delete)) { edit_state.OnKeyPressed(STB_TEXTEDIT_K_DELETE | k_mask); } + else if (IsKeyPressedMap(ImGuiKey_Backspace)) { edit_state.OnKeyPressed(STB_TEXTEDIT_K_BACKSPACE | k_mask); } + else if (IsKeyPressedMap(ImGuiKey_Enter)) { SetActiveId(0); enter_pressed = true; } + else if (IsKeyPressedMap(ImGuiKey_Escape)) { SetActiveId(0); cancel_edit = true; } + else if (is_ctrl_down && IsKeyPressedMap(ImGuiKey_Z)) { edit_state.OnKeyPressed(STB_TEXTEDIT_K_UNDO); } + else if (is_ctrl_down && IsKeyPressedMap(ImGuiKey_Y)) { edit_state.OnKeyPressed(STB_TEXTEDIT_K_REDO); } + else if (is_ctrl_down && IsKeyPressedMap(ImGuiKey_A)) { edit_state.SelectAll(); } + else if (is_ctrl_down && (IsKeyPressedMap(ImGuiKey_X) || IsKeyPressedMap(ImGuiKey_C))) + { + // Cut, Copy + const bool cut = IsKeyPressedMap(ImGuiKey_X); + if (cut && !edit_state.HasSelection()) + edit_state.SelectAll(); + + if (g.IO.SetClipboardTextFn) + { + const int ib = edit_state.HasSelection() ? ImMin(edit_state.StbState.select_start, edit_state.StbState.select_end) : 0; + const int ie = edit_state.HasSelection() ? ImMax(edit_state.StbState.select_start, edit_state.StbState.select_end) : (int)edit_state.CurLenW; + ImTextStrToUtf8(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), edit_state.Text+ib, edit_state.Text+ie); + g.IO.SetClipboardTextFn(g.TempBuffer); + } + + if (cut) + stb_textedit_cut(&edit_state, &edit_state.StbState); + } + else if (is_ctrl_down && IsKeyPressedMap(ImGuiKey_V)) + { + // Paste + if (g.IO.GetClipboardTextFn) + { + if (const char* clipboard = g.IO.GetClipboardTextFn()) + { + // Remove new-line from pasted buffer + const size_t clipboard_len = strlen(clipboard); + ImWchar* clipboard_filtered = (ImWchar*)ImGui::MemAlloc((clipboard_len+1) * sizeof(ImWchar)); + int clipboard_filtered_len = 0; + for (const char* s = clipboard; *s; ) + { + unsigned int c; + s += ImTextCharFromUtf8(&c, s, NULL); + if (c == 0) + break; + if (c >= 0x10000) + continue; + if (!InputTextFilterCharacter(&c, flags, callback, user_data)) + continue; + clipboard_filtered[clipboard_filtered_len++] = (ImWchar)c; + } + clipboard_filtered[clipboard_filtered_len] = 0; + if (clipboard_filtered_len > 0) // If everything was filtered, ignore the pasting operation + stb_textedit_paste(&edit_state, &edit_state.StbState, clipboard_filtered, clipboard_filtered_len); + ImGui::MemFree(clipboard_filtered); + } + } + } + + edit_state.CursorAnim += g.IO.DeltaTime; + edit_state.UpdateScrollOffset(); + + if (cancel_edit) + { + // Restore initial value + ImFormatString(buf, buf_size, "%s", edit_state.InitialText); + value_changed = true; + } + else + { + // Apply new value immediately - copy modified buffer back + // Note that as soon as we can focus into the input box, the in-widget value gets priority over any underlying modification of the input buffer + // FIXME: We actually always render 'buf' in RenderTextScrolledClipped + // FIXME-OPT: CPU waste to do this every time the widget is active, should mark dirty state from the stb_textedit callbacks + ImTextStrToUtf8(g.TempBuffer, IM_ARRAYSIZE(g.TempBuffer), edit_state.Text, NULL); + + // User callback + if ((flags & (ImGuiInputTextFlags_CallbackCompletion | ImGuiInputTextFlags_CallbackHistory | ImGuiInputTextFlags_CallbackAlways)) != 0) + { + IM_ASSERT(callback != NULL); + + // The reason we specify the usage semantic (Completion/History) is that Completion needs to disable keyboard TABBING at the moment. + ImGuiInputTextFlags event_flag = 0; + ImGuiKey event_key = ImGuiKey_COUNT; + if ((flags & ImGuiInputTextFlags_CallbackCompletion) != 0 && IsKeyPressedMap(ImGuiKey_Tab)) + { + event_flag = ImGuiInputTextFlags_CallbackCompletion; + event_key = ImGuiKey_Tab; + } + else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_UpArrow)) + { + event_flag = ImGuiInputTextFlags_CallbackHistory; + event_key = ImGuiKey_UpArrow; + } + else if ((flags & ImGuiInputTextFlags_CallbackHistory) != 0 && IsKeyPressedMap(ImGuiKey_DownArrow)) + { + event_flag = ImGuiInputTextFlags_CallbackHistory; + event_key = ImGuiKey_DownArrow; + } + + if (event_key != ImGuiKey_COUNT || (flags & ImGuiInputTextFlags_CallbackAlways) != 0) + { + ImGuiTextEditCallbackData callback_data; + callback_data.EventFlag = event_flag; + callback_data.EventKey = event_key; + callback_data.Buf = g.TempBuffer; + callback_data.BufSize = edit_state.BufSizeA; + callback_data.BufDirty = false; + callback_data.Flags = flags; + callback_data.UserData = user_data; + + // We have to convert from position from wchar to UTF-8 positions + const int utf8_cursor_pos = callback_data.CursorPos = ImTextCountUtf8BytesFromStr(edit_state.Text, edit_state.Text + edit_state.StbState.cursor); + const int utf8_selection_start = callback_data.SelectionStart = ImTextCountUtf8BytesFromStr(edit_state.Text, edit_state.Text + edit_state.StbState.select_start); + const int utf8_selection_end = callback_data.SelectionEnd = ImTextCountUtf8BytesFromStr(edit_state.Text, edit_state.Text + edit_state.StbState.select_end); + + // Call user code + callback(&callback_data); + + // Read back what user may have modified + IM_ASSERT(callback_data.Buf == g.TempBuffer); // Invalid to modify those fields + IM_ASSERT(callback_data.BufSize == edit_state.BufSizeA); + IM_ASSERT(callback_data.Flags == flags); + if (callback_data.CursorPos != utf8_cursor_pos) edit_state.StbState.cursor = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.CursorPos); + if (callback_data.SelectionStart != utf8_selection_start) edit_state.StbState.select_start = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionStart); + if (callback_data.SelectionEnd != utf8_selection_end) edit_state.StbState.select_end = ImTextCountCharsFromUtf8(callback_data.Buf, callback_data.Buf + callback_data.SelectionEnd); + if (callback_data.BufDirty) + { + ImTextStrFromUtf8(edit_state.Text, IM_ARRAYSIZE(edit_state.Text), g.TempBuffer, NULL); + edit_state.CursorAnimReset(); + } + } + } + + if (strcmp(g.TempBuffer, buf) != 0) + { + ImFormatString(buf, buf_size, "%s", g.TempBuffer); + value_changed = true; + } + } + } + + RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg), true, style.FrameRounding); + + const ImVec2 font_off_up = ImVec2(0.0f, g.FontSize+1.0f); // FIXME: those offsets are part of the style or font API + const ImVec2 font_off_dn = ImVec2(0.0f, 2.0f); + + if (g.ActiveId == id) + { + // Draw selection + const int select_begin_idx = edit_state.StbState.select_start; + const int select_end_idx = edit_state.StbState.select_end; + if (select_begin_idx != select_end_idx) + { + const ImVec2 select_begin_pos = frame_bb.Min + style.FramePadding + edit_state.CalcDisplayOffsetFromCharIdx(ImMin(select_begin_idx,select_end_idx)); + const ImVec2 select_end_pos = frame_bb.Min + style.FramePadding + edit_state.CalcDisplayOffsetFromCharIdx(ImMax(select_begin_idx,select_end_idx)); + window->DrawList->AddRectFilled(select_begin_pos - font_off_up, select_end_pos + font_off_dn, window->Color(ImGuiCol_TextSelectedBg)); + } + } + + //const float render_scroll_x = (g.ActiveId == id) ? edit_state.ScrollX : 0.0f; + const float render_scroll_x = (edit_state.Id == id) ? edit_state.ScrollX : 0.0f; + ImGuiTextEditState::RenderTextScrolledClipped(g.Font, g.FontSize, buf, frame_bb.Min + style.FramePadding, w + style.FramePadding.x, render_scroll_x); + + if (g.ActiveId == id) + { + const ImVec2 cursor_pos = frame_bb.Min + style.FramePadding + edit_state.CalcDisplayOffsetFromCharIdx(edit_state.StbState.cursor); + + // Draw blinking cursor + if (g.InputTextState.CursorIsVisible()) + window->DrawList->AddRect(cursor_pos - font_off_up + ImVec2(0,2), cursor_pos + font_off_dn - ImVec2(0,3), window->Color(ImGuiCol_Text)); + + // Notify OS of text input position for advanced IME + if (io.ImeSetInputScreenPosFn && ImLengthSqr(edit_state.InputCursorScreenPos - cursor_pos) > 0.0001f) + io.ImeSetInputScreenPosFn((int)cursor_pos.x - 1, (int)(cursor_pos.y - g.FontSize)); // -1 x offset so that Windows IME can cover our cursor. Bit of an extra nicety. + + edit_state.InputCursorScreenPos = cursor_pos; + } + + if (label_size.x > 0) + RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label); + + if ((flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0) + return enter_pressed; + else + return value_changed; +} + +static bool InputFloatN(const char* label, float* v, int components, int decimal_precision) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const float w_full = ImGui::CalcItemWidth(); + const float w_item_one = ImMax(1.0f, (float)(int)((w_full - (style.FramePadding.x*2.0f + style.ItemInnerSpacing.x) * (components-1)) / (float)components)); + const float w_item_last = ImMax(1.0f, (float)(int)(w_full - (w_item_one + style.FramePadding.x*2.0f + style.ItemInnerSpacing.x) * (components-1))); + + bool value_changed = false; + ImGui::BeginGroup(); + ImGui::PushID(label); + ImGui::PushItemWidth(w_item_one); + for (int i = 0; i < components; i++) + { + ImGui::PushID(i); + if (i + 1 == components) + { + ImGui::PopItemWidth(); + ImGui::PushItemWidth(w_item_last); + } + value_changed |= ImGui::InputFloat("##v", &v[i], 0, 0, decimal_precision); + ImGui::SameLine(0, (int)style.ItemInnerSpacing.x); + ImGui::PopID(); + } + ImGui::PopItemWidth(); + ImGui::PopID(); + + window->DC.CurrentLineTextBaseOffset = ImMax(window->DC.CurrentLineTextBaseOffset, style.FramePadding.y); + ImGui::TextUnformatted(label, FindTextDisplayEnd(label)); + ImGui::EndGroup(); + + return value_changed; +} + +bool ImGui::InputFloat2(const char* label, float v[2], int decimal_precision) +{ + return InputFloatN(label, v, 2, decimal_precision); +} + +bool ImGui::InputFloat3(const char* label, float v[3], int decimal_precision) +{ + return InputFloatN(label, v, 3, decimal_precision); +} + +bool ImGui::InputFloat4(const char* label, float v[4], int decimal_precision) +{ + return InputFloatN(label, v, 4, decimal_precision); +} + +static bool InputIntN(const char* label, int* v, int components) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const float w_full = ImGui::CalcItemWidth(); + const float w_item_one = ImMax(1.0f, (float)(int)((w_full - (style.FramePadding.x*2.0f + style.ItemInnerSpacing.x) * (components-1)) / (float)components)); + const float w_item_last = ImMax(1.0f, (float)(int)(w_full - (w_item_one + style.FramePadding.x*2.0f + style.ItemInnerSpacing.x) * (components-1))); + + bool value_changed = false; + ImGui::BeginGroup(); + ImGui::PushID(label); + ImGui::PushItemWidth(w_item_one); + for (int i = 0; i < components; i++) + { + ImGui::PushID(i); + if (i + 1 == components) + { + ImGui::PopItemWidth(); + ImGui::PushItemWidth(w_item_last); + } + value_changed |= ImGui::InputInt("##v", &v[i], 0, 0); + ImGui::SameLine(0, (int)style.ItemInnerSpacing.x); + ImGui::PopID(); + } + ImGui::PopItemWidth(); + ImGui::PopID(); + + window->DC.CurrentLineTextBaseOffset = ImMax(window->DC.CurrentLineTextBaseOffset, style.FramePadding.y); + ImGui::TextUnformatted(label, FindTextDisplayEnd(label)); + ImGui::EndGroup(); + + return value_changed; +} + +bool ImGui::InputInt2(const char* label, int v[2]) +{ + return InputIntN(label, v, 2); +} + +bool ImGui::InputInt3(const char* label, int v[3]) +{ + return InputIntN(label, v, 3); +} + +bool ImGui::InputInt4(const char* label, int v[4]) +{ + return InputIntN(label, v, 4); +} + +static bool Items_ArrayGetter(void* data, int idx, const char** out_text) +{ + const char** items = (const char**)data; + if (out_text) + *out_text = items[idx]; + return true; +} + +static bool Items_SingleStringGetter(void* data, int idx, const char** out_text) +{ + // FIXME-OPT: we could pre-compute the indices to fasten this. But only 1 active combo means the waste is limited. + const char* items_separated_by_zeros = (const char*)data; + int items_count = 0; + const char* p = items_separated_by_zeros; + while (*p) + { + if (idx == items_count) + break; + p += strlen(p) + 1; + items_count++; + } + if (!*p) + return false; + if (out_text) + *out_text = p; + return true; +} + +// Combo box helper allowing to pass an array of strings. +bool ImGui::Combo(const char* label, int* current_item, const char** items, int items_count, int height_in_items) +{ + const bool value_changed = Combo(label, current_item, Items_ArrayGetter, (void*)items, items_count, height_in_items); + return value_changed; +} + +// Combo box helper allowing to pass all items in a single string. +bool ImGui::Combo(const char* label, int* current_item, const char* items_separated_by_zeros, int height_in_items) +{ + int items_count = 0; + const char* p = items_separated_by_zeros; // FIXME-OPT: Avoid computing this + while (*p) + { + p += strlen(p) + 1; + items_count++; + } + bool value_changed = Combo(label, current_item, Items_SingleStringGetter, (void*)items_separated_by_zeros, items_count, height_in_items); + return value_changed; +} + +// Combo box function. +bool ImGui::Combo(const char* label, int* current_item, bool (*items_getter)(void*, int, const char**), void* data, int items_count, int height_in_items) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const ImGuiID id = window->GetID(label); + const float w = ImGui::CalcItemWidth(); + + const ImVec2 label_size = CalcTextSize(label, NULL, true); + const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(w, label_size.y) + style.FramePadding*2.0f); + const ImRect total_bb(frame_bb.Min, frame_bb.Max + ImVec2(style.ItemInnerSpacing.x + label_size.x,0)); + ItemSize(total_bb, style.FramePadding.y); + if (!ItemAdd(total_bb, &id)) + return false; + + const float arrow_size = (g.FontSize + style.FramePadding.x * 2.0f); + const bool hovered = IsHovered(frame_bb, id); + + bool value_changed = false; + const ImRect value_bb(frame_bb.Min, frame_bb.Max - ImVec2(arrow_size, 0.0f)); + RenderFrame(frame_bb.Min, frame_bb.Max, window->Color(ImGuiCol_FrameBg), true, style.FrameRounding); + RenderFrame(ImVec2(frame_bb.Max.x-arrow_size, frame_bb.Min.y), frame_bb.Max, window->Color(hovered ? ImGuiCol_ButtonHovered : ImGuiCol_Button), true, style.FrameRounding); // FIXME-ROUNDING + RenderCollapseTriangle(ImVec2(frame_bb.Max.x-arrow_size, frame_bb.Min.y) + style.FramePadding, true); + + if (*current_item >= 0 && *current_item < items_count) + { + const char* item_text; + if (items_getter(data, *current_item, &item_text)) + RenderTextClipped(frame_bb.Min + style.FramePadding, item_text, NULL, NULL, value_bb.Max); + } + + if (label_size.x > 0) + RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label); + + ImGui::PushID((int)id); + bool menu_toggled = false; + if (hovered) + { + g.HoveredId = id; + if (g.IO.MouseClicked[0]) + { + menu_toggled = true; + g.ActiveComboID = (g.ActiveComboID == id) ? 0 : id; + if (g.ActiveComboID) + FocusWindow(window); + } + } + + if (g.ActiveComboID == id) + { + // Size default to hold ~7 items + if (height_in_items < 0) + height_in_items = 7; + + const ImVec2 backup_pos = ImGui::GetCursorPos(); + const float popup_off_x = 0.0f;//style.ItemInnerSpacing.x; + const float popup_height = (label_size.y + style.ItemSpacing.y) * ImMin(items_count, height_in_items) + (style.FramePadding.y * 3); + const ImRect popup_rect(ImVec2(frame_bb.Min.x+popup_off_x, frame_bb.Max.y), ImVec2(frame_bb.Max.x+popup_off_x, frame_bb.Max.y + popup_height)); + ImGui::SetCursorPos(popup_rect.Min - window->Pos); + + const ImGuiWindowFlags flags = ImGuiWindowFlags_ComboBox | ((window->Flags & ImGuiWindowFlags_ShowBorders) ? ImGuiWindowFlags_ShowBorders : 0); + ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, style.FramePadding); + ImGui::BeginChild("#ComboBox", popup_rect.GetSize(), false, flags); + ImGui::Spacing(); + + bool combo_item_active = false; + combo_item_active |= (g.ActiveId == GetCurrentWindow()->GetID("#SCROLLY")); + + // Display items + for (int i = 0; i < items_count; i++) + { + ImGui::PushID((void*)(intptr_t)i); + const bool item_selected = (i == *current_item); + const char* item_text; + if (!items_getter(data, i, &item_text)) + item_text = "*Unknown item*"; + if (ImGui::Selectable(item_text, item_selected)) + { + SetActiveId(0); + g.ActiveComboID = 0; + value_changed = true; + *current_item = i; + } + if (item_selected && menu_toggled) + ImGui::SetScrollPosHere(); + combo_item_active |= ImGui::IsItemActive(); + ImGui::PopID(); + } + ImGui::EndChild(); + ImGui::PopStyleVar(); + ImGui::SetCursorPos(backup_pos); + + if (!combo_item_active && g.ActiveId != 0) + g.ActiveComboID = 0; + } + + ImGui::PopID(); + + return value_changed; +} + +// Tip: pass an empty label (e.g. "##dummy") then you can use the space to draw other text or image. +// But you need to make sure the ID is unique, e.g. enclose calls in PushID/PopID. +bool ImGui::Selectable(const char* label, bool selected, const ImVec2& size_arg) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const ImGuiID id = window->GetID(label); + const ImVec2 label_size = CalcTextSize(label, NULL, true); + + const float w = ImMax(label_size.x, window->Pos.x + ImGui::GetContentRegionMax().x - style.AutoFitPadding.x - window->DC.CursorPos.x); + const ImVec2 size(size_arg.x != 0.0f ? size_arg.x : w, size_arg.y != 0.0f ? size_arg.y : label_size.y); + ImRect bb(window->DC.CursorPos, window->DC.CursorPos + size); + ItemSize(bb); + if (size_arg.x == 0.0f) + bb.Max.x += style.AutoFitPadding.x; + + // Selectables are meant to be tightly packed together. So for both rendering and collision we extend to compensate for spacing. + ImRect bb_with_spacing = bb; + const float spacing_L = (float)(int)(style.ItemSpacing.x * 0.5f); + const float spacing_U = (float)(int)(style.ItemSpacing.y * 0.5f); + const float spacing_R = style.ItemSpacing.x - spacing_L; + const float spacing_D = style.ItemSpacing.y - spacing_U; + bb_with_spacing.Min.x -= spacing_L; + bb_with_spacing.Min.y -= spacing_U; + bb_with_spacing.Max.x += spacing_R; + bb_with_spacing.Max.y += spacing_D; + if (!ItemAdd(bb_with_spacing, &id)) + return false; + + bool hovered, held; + bool pressed = ButtonBehavior(bb_with_spacing, id, &hovered, &held, true, false, false); + + // Render + if (hovered || selected) + { + const ImU32 col = window->Color((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header); + RenderFrame(bb_with_spacing.Min, bb_with_spacing.Max, col, false, style.FrameRounding); + } + + //const ImVec2 off = ImVec2(ImMax(0.0f, size.x - text_size.x) * 0.5f, ImMax(0.0f, size.y - text_size.y) * 0.5f); + RenderTextClipped(bb.Min, label, NULL, &label_size, bb_with_spacing.Max); + + return pressed; +} + +bool ImGui::Selectable(const char* label, bool* p_selected, const ImVec2& size_arg) +{ + if (ImGui::Selectable(label, *p_selected, size_arg)) + { + *p_selected = !*p_selected; + return true; + } + return false; +} + +// Helper to calculate the size of a listbox and display a label on the right. +// Tip: To have a list filling the entire window width, PushItemWidth(-1) and pass an empty label "##empty" +bool ImGui::ListBoxHeader(const char* label, const ImVec2& size_arg) +{ + ImGuiWindow* window = GetCurrentWindow(); + + const ImGuiStyle& style = ImGui::GetStyle(); + const ImGuiID id = ImGui::GetID(label); + const ImVec2 label_size = ImGui::CalcTextSize(label, NULL, true); + + // Size default to hold ~7 items. Fractional number of items helps seeing that we can scroll down/up without looking at scrollbar. + ImVec2 size; + size.x = (size_arg.x != 0.0f) ? (size_arg.x) : ImGui::CalcItemWidth() + style.FramePadding.x * 2.0f; + size.y = (size_arg.y != 0.0f) ? (size_arg.y) : ImGui::GetTextLineHeightWithSpacing() * 7.4f + style.ItemSpacing.y; + const ImVec2 frame_size = ImVec2(size.x, ImMax(size.y, label_size.y)); + const ImRect frame_bb(window->DC.CursorPos, window->DC.CursorPos + frame_size); + const ImRect bb(frame_bb.Min, frame_bb.Max + ImVec2(label_size.x > 0.0f ? style.ItemInnerSpacing.x + label_size.x : 0.0f, 0.0f)); + window->DC.LastItemRect = bb; + + ImGui::BeginGroup(); + if (label_size.x > 0) + RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, frame_bb.Min.y + style.FramePadding.y), label); + + ImGui::BeginChildFrame(id, frame_bb.GetSize()); + return true; +} + +bool ImGui::ListBoxHeader(const char* label, int items_count, int height_in_items) +{ + // Size default to hold ~7 items. Fractional number of items helps seeing that we can scroll down/up without looking at scrollbar. + // However we don't add +0.40f if items_count <= height_in_items. It is slightly dodgy, because it means a dynamic list of items will make the widget resize occasionally when it crosses that size. + // I am expecting that someone will come and complain about this behavior in a remote future, then we can advise on a better solution. + if (height_in_items < 0) + height_in_items = ImMin(items_count, 7); + float height_in_items_f = height_in_items < items_count ? (height_in_items + 0.40f) : (height_in_items + 0.00f); + + // We include ItemSpacing.y so that a list sized for the exact number of items doesn't make a scrollbar appears. We could also enforce that by passing a flag to BeginChild(). + ImVec2 size; + size.x = 0.0f; + size.y = ImGui::GetTextLineHeightWithSpacing() * height_in_items_f + ImGui::GetStyle().ItemSpacing.y; + return ImGui::ListBoxHeader(label, size); +} + +void ImGui::ListBoxFooter() +{ + ImGuiWindow* parent_window = GetParentWindow(); + const ImRect bb = parent_window->DC.LastItemRect; + const ImGuiStyle& style = ImGui::GetStyle(); + + ImGui::EndChildFrame(); + + // Redeclare item size so that it includes the label (we have stored the full size in LastItemRect) + // We call SameLine() to restore DC.CurrentLine* data + ImGui::SameLine(); + parent_window->DC.CursorPos = bb.Min; + ItemSize(bb, style.FramePadding.y); + ImGui::EndGroup(); +} + +bool ImGui::ListBox(const char* label, int* current_item, const char** items, int items_count, int height_items) +{ + const bool value_changed = ListBox(label, current_item, Items_ArrayGetter, (void*)items, items_count, height_items); + return value_changed; +} + +bool ImGui::ListBox(const char* label, int* current_item, bool (*items_getter)(void*, int, const char**), void* data, int items_count, int height_in_items) +{ + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + if (!ImGui::ListBoxHeader(label, items_count, height_in_items)) + return false; + + bool value_changed = false; + for (int i = 0; i < items_count; i++) + { + const bool item_selected = (i == *current_item); + const char* item_text; + if (!items_getter(data, i, &item_text)) + item_text = "*Unknown item*"; + + ImGui::PushID(i); + if (ImGui::Selectable(item_text, item_selected)) + { + *current_item = i; + value_changed = true; + } + ImGui::PopID(); + } + + ImGui::ListBoxFooter(); + return value_changed; +} + +// A little colored square. Return true when clicked. +bool ImGui::ColorButton(const ImVec4& col, bool small_height, bool outline_border) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const ImGuiID id = window->GetID("#colorbutton"); + const float square_size = g.FontSize; + const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(square_size + style.FramePadding.x*2, square_size + (small_height ? 0 : style.FramePadding.y*2))); + ItemSize(bb, small_height ? 0.0f : style.FramePadding.y); + if (!ItemAdd(bb, &id)) + return false; + + bool hovered, held; + bool pressed = ButtonBehavior(bb, id, &hovered, &held, true); + RenderFrame(bb.Min, bb.Max, window->Color(col), outline_border, style.FrameRounding); + + if (hovered) + { + int ix = (int)(col.x * 255.0f + 0.5f); + int iy = (int)(col.y * 255.0f + 0.5f); + int iz = (int)(col.z * 255.0f + 0.5f); + int iw = (int)(col.w * 255.0f + 0.5f); + ImGui::SetTooltip("Color:\n(%.2f,%.2f,%.2f,%.2f)\n#%02X%02X%02X%02X", col.x, col.y, col.z, col.w, ix, iy, iz, iw); + } + + return pressed; +} + +bool ImGui::ColorEdit3(const char* label, float col[3]) +{ + float col4[4]; + col4[0] = col[0]; + col4[1] = col[1]; + col4[2] = col[2]; + col4[3] = 1.0f; + const bool value_changed = ImGui::ColorEdit4(label, col4, false); + col[0] = col4[0]; + col[1] = col4[1]; + col[2] = col4[2]; + return value_changed; +} + +// Edit colors components (each component in 0.0f..1.0f range +// Use CTRL-Click to input value and TAB to go to next item. +bool ImGui::ColorEdit4(const char* label, float col[4], bool alpha) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return false; + + const ImGuiStyle& style = g.Style; + const ImGuiID id = window->GetID(label); + const float w_full = ImGui::CalcItemWidth(); + const float square_sz = (g.FontSize + style.FramePadding.x * 2.0f); + + ImGuiColorEditMode edit_mode = window->DC.ColorEditMode; + if (edit_mode == ImGuiColorEditMode_UserSelect || edit_mode == ImGuiColorEditMode_UserSelectShowButton) + edit_mode = g.ColorEditModeStorage.GetInt(id, 0) % 3; + + float f[4] = { col[0], col[1], col[2], col[3] }; + + if (edit_mode == ImGuiColorEditMode_HSV) + ImGui::ColorConvertRGBtoHSV(f[0], f[1], f[2], f[0], f[1], f[2]); + + int i[4] = { (int)(f[0] * 255.0f + 0.5f), (int)(f[1] * 255.0f + 0.5f), (int)(f[2] * 255.0f + 0.5f), (int)(f[3] * 255.0f + 0.5f) }; + + int components = alpha ? 4 : 3; + bool value_changed = false; + + ImGui::BeginGroup(); + ImGui::PushID(label); + + const bool hsv = (edit_mode == 1); + switch (edit_mode) + { + case ImGuiColorEditMode_RGB: + case ImGuiColorEditMode_HSV: + { + // RGB/HSV 0..255 Sliders + const float w_items_all = w_full - (square_sz + style.ItemInnerSpacing.x); + const float w_item_one = ImMax(1.0f, (float)(int)((w_items_all - (style.FramePadding.x*2.0f + style.ItemInnerSpacing.x) * (components-1)) / (float)components)); + const float w_item_last = ImMax(1.0f, (float)(int)(w_items_all - (w_item_one + style.FramePadding.x*2.0f + style.ItemInnerSpacing.x) * (components-1))); + + const bool hide_prefix = (w_item_one <= CalcTextSize("M:999").x); + const char* ids[4] = { "##X", "##Y", "##Z", "##W" }; + const char* fmt_table[3][4] = + { + { "%3.0f", "%3.0f", "%3.0f", "%3.0f" }, + { "R:%3.0f", "G:%3.0f", "B:%3.0f", "A:%3.0f" }, + { "H:%3.0f", "S:%3.0f", "V:%3.0f", "A:%3.0f" } + }; + const char** fmt = hide_prefix ? fmt_table[0] : hsv ? fmt_table[2] : fmt_table[1]; + + ImGui::PushItemWidth(w_item_one); + for (int n = 0; n < components; n++) + { + if (n > 0) + ImGui::SameLine(0, (int)style.ItemInnerSpacing.x); + if (n + 1 == components) + ImGui::PushItemWidth(w_item_last); + value_changed |= ImGui::DragInt(ids[n], &i[n], 1.0f, 0, 255, fmt[n]); + } + ImGui::PopItemWidth(); + ImGui::PopItemWidth(); + } + break; + case ImGuiColorEditMode_HEX: + { + // RGB Hexadecimal Input + const float w_slider_all = w_full - square_sz; + char buf[64]; + if (alpha) + ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X%02X", i[0], i[1], i[2], i[3]); + else + ImFormatString(buf, IM_ARRAYSIZE(buf), "#%02X%02X%02X", i[0], i[1], i[2]); + ImGui::PushItemWidth(w_slider_all - style.ItemInnerSpacing.x); + value_changed |= ImGui::InputText("##Text", buf, IM_ARRAYSIZE(buf), ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase); + ImGui::PopItemWidth(); + char* p = buf; + while (*p == '#' || ImCharIsSpace(*p)) + p++; + + // Treat at unsigned (%X is unsigned) + i[0] = i[1] = i[2] = i[3] = 0; + if (alpha) + sscanf(p, "%02X%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2], (unsigned int*)&i[3]); + else + sscanf(p, "%02X%02X%02X", (unsigned int*)&i[0], (unsigned int*)&i[1], (unsigned int*)&i[2]); + } + break; + } + + ImGui::SameLine(0, (int)style.ItemInnerSpacing.x); + + const ImVec4 col_display(col[0], col[1], col[2], 1.0f); + if (ImGui::ColorButton(col_display)) + g.ColorEditModeStorage.SetInt(id, (edit_mode + 1) % 3); // Don't set local copy of 'edit_mode' right away! + + if (window->DC.ColorEditMode == ImGuiColorEditMode_UserSelectShowButton) + { + ImGui::SameLine(0, (int)style.ItemInnerSpacing.x); + const char* button_titles[3] = { "RGB", "HSV", "HEX" }; + if (ImGui::Button(button_titles[edit_mode])) + g.ColorEditModeStorage.SetInt(id, (edit_mode + 1) % 3); // Don't set local copy of 'edit_mode' right away! + ImGui::SameLine(); + } + else + { + ImGui::SameLine(0, (int)style.ItemInnerSpacing.x); + } + + ImGui::TextUnformatted(label, FindTextDisplayEnd(label)); + + // Convert back + for (int n = 0; n < 4; n++) + f[n] = i[n] / 255.0f; + if (edit_mode == 1) + ImGui::ColorConvertHSVtoRGB(f[0], f[1], f[2], f[0], f[1], f[2]); + + if (value_changed) + { + col[0] = f[0]; + col[1] = f[1]; + col[2] = f[2]; + if (alpha) + col[3] = f[3]; + } + + ImGui::PopID(); + ImGui::EndGroup(); + + return value_changed; +} + +void ImGui::ColorEditMode(ImGuiColorEditMode mode) +{ + ImGuiWindow* window = GetCurrentWindow(); + window->DC.ColorEditMode = mode; +} + +// Horizontal separating line. +void ImGui::Separator() +{ + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return; + + if (window->DC.ColumnsCount > 1) + PopClipRect(); + + const ImRect bb(ImVec2(window->Pos.x, window->DC.CursorPos.y), ImVec2(window->Pos.x + window->Size.x, window->DC.CursorPos.y)); + ItemSize(ImVec2(0.0f, bb.GetSize().y)); // NB: we don't provide our width so that it doesn't get feed back into AutoFit + if (!ItemAdd(bb, NULL)) + { + if (window->DC.ColumnsCount > 1) + PushColumnClipRect(); + return; + } + + window->DrawList->AddLine(bb.Min, bb.Max, window->Color(ImGuiCol_Border)); + + ImGuiState& g = *GImGui; + if (g.LogEnabled) + ImGui::LogText(STR_NEWLINE "--------------------------------"); + + if (window->DC.ColumnsCount > 1) + { + PushColumnClipRect(); + window->DC.ColumnsCellMinY = window->DC.CursorPos.y; + } +} + +// A little vertical spacing. +void ImGui::Spacing() +{ + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return; + + ItemSize(ImVec2(0,0)); +} + +// Advance cursor given item size. +static void ItemSize(ImVec2 size, float text_offset_y) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return; + + // Always align ourselves on pixel boundaries + const float line_height = ImMax(window->DC.CurrentLineHeight, size.y); + const float text_base_offset = ImMax(window->DC.CurrentLineTextBaseOffset, text_offset_y); + window->DC.CursorPosPrevLine = ImVec2(window->DC.CursorPos.x + size.x, window->DC.CursorPos.y); + window->DC.CursorPos = ImVec2((float)(int)(window->Pos.x + window->DC.ColumnsStartX + window->DC.ColumnsOffsetX), (float)(int)(window->DC.CursorPos.y + line_height + g.Style.ItemSpacing.y)); + window->DC.CursorMaxPos.x = ImMax(window->DC.CursorMaxPos.x, window->DC.CursorPosPrevLine.x); + window->DC.CursorMaxPos.y = ImMax(window->DC.CursorMaxPos.y, window->DC.CursorPos.y); + + //window->DrawList->AddCircle(window->DC.CursorMaxPos, 3.0f, 0xFF0000FF, 4); // Debug + + window->DC.PrevLineHeight = line_height; + window->DC.PrevLineTextBaseOffset = text_base_offset; + window->DC.CurrentLineHeight = window->DC.CurrentLineTextBaseOffset = 0.0f; +} + +static inline void ItemSize(const ImRect& bb, float text_offset_y) +{ + ItemSize(bb.GetSize(), text_offset_y); +} + +static bool IsClippedEx(const ImRect& bb, const ImGuiID* id, bool clip_even_when_logged) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + + if (!bb.Overlaps(ImRect(window->ClipRectStack.back()))) + { + if (!id || *id != GImGui->ActiveId) + if (clip_even_when_logged || !g.LogEnabled) + return true; + } + return false; +} + +bool ImGui::IsRectClipped(const ImVec2& size) +{ + ImGuiWindow* window = GetCurrentWindow(); + return IsClippedEx(ImRect(window->DC.CursorPos, window->DC.CursorPos + size), NULL, true); +} + +static bool ItemAdd(const ImRect& bb, const ImGuiID* id) +{ + ImGuiWindow* window = GetCurrentWindow(); + window->DC.LastItemID = id ? *id : 0; + window->DC.LastItemRect = bb; + if (IsClippedEx(bb, id, false)) + { + window->DC.LastItemHoveredAndUsable = window->DC.LastItemHoveredRect = false; + return false; + } + + // This is a sensible default, but widgets are free to override it after calling ItemAdd() + ImGuiState& g = *GImGui; + if (IsMouseHoveringRect(bb)) + { + // Matching the behavior of IsHovered() but ignore if ActiveId==window->MoveID (we clicked on the window background) + // So that clicking on items with no active id such as Text() still returns true with IsItemHovered() + window->DC.LastItemHoveredRect = true; + window->DC.LastItemHoveredAndUsable = false; + if (g.HoveredRootWindow == window->RootWindow) + if (g.ActiveId == 0 || (id && g.ActiveId == *id) || g.ActiveIdIsFocusedOnly || (g.ActiveId == window->MoveID)) + if (IsWindowContentHoverable(window)) + window->DC.LastItemHoveredAndUsable = true; + } + else + { + window->DC.LastItemHoveredAndUsable = window->DC.LastItemHoveredRect = false; + } + + return true; +} + +void ImGui::BeginGroup() +{ + ImGuiWindow* window = GetCurrentWindow(); + + window->DC.GroupStack.resize(window->DC.GroupStack.size() + 1); + ImGuiGroupData& group_data = window->DC.GroupStack.back(); + group_data.BackupCursorPos = window->DC.CursorPos; + group_data.BackupCursorMaxPos = window->DC.CursorMaxPos; + group_data.BackupColumnsStartX = window->DC.ColumnsStartX; + group_data.BackupCurrentLineHeight = window->DC.CurrentLineHeight; + group_data.BackupCurrentLineTextBaseOffset = window->DC.CurrentLineTextBaseOffset; + group_data.BackupLogLinePosY = window->DC.LogLinePosY; + + window->DC.ColumnsStartX = window->DC.CursorPos.x - window->Pos.x; + window->DC.CursorMaxPos = window->DC.CursorPos; + window->DC.CurrentLineHeight = 0.0f; + window->DC.LogLinePosY = window->DC.CursorPos.y - 9999.0f; +} + +void ImGui::EndGroup() +{ + ImGuiWindow* window = GetCurrentWindow(); + ImGuiStyle& style = ImGui::GetStyle(); + + IM_ASSERT(!window->DC.GroupStack.empty()); + + ImGuiGroupData& group_data = window->DC.GroupStack.back(); + + ImRect group_bb(group_data.BackupCursorPos, window->DC.CursorMaxPos); + group_bb.Max.y -= style.ItemSpacing.y; // Cancel out last vertical spacing because we are adding one ourselves. + group_bb.Max = ImMax(group_bb.Min, group_bb.Max); + + window->DC.CursorPos = group_data.BackupCursorPos; + window->DC.CursorMaxPos = ImMax(group_data.BackupCursorMaxPos, window->DC.CursorMaxPos); + window->DC.CurrentLineHeight = group_data.BackupCurrentLineHeight; + window->DC.CurrentLineTextBaseOffset = group_data.BackupCurrentLineTextBaseOffset; // FIXME: Ideally we'll grab the base offset from the first line of the group. + window->DC.ColumnsStartX = group_data.BackupColumnsStartX; + window->DC.LogLinePosY = window->DC.CursorPos.y - 9999.0f; + + ItemSize(group_bb.GetSize(), group_data.BackupCurrentLineTextBaseOffset); + ItemAdd(group_bb, NULL); + + window->DC.GroupStack.pop_back(); + + //window->DrawList->AddRect(group_bb.Min, group_bb.Max, 0xFFFF00FF); // Debug +} + +// Gets back to previous line and continue with horizontal layout +// column_x == 0 : follow on previous item +// columm_x != 0 : align to specified column +// spacing_w < 0 : use default spacing if column_x==0, no spacing if column_x!=0 +// spacing_w >= 0 : enforce spacing +void ImGui::SameLine(int column_x, int spacing_w) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return; + + float x, y; + if (column_x != 0) + { + if (spacing_w < 0) spacing_w = 0; + x = window->Pos.x + (float)column_x + (float)spacing_w; + y = window->DC.CursorPosPrevLine.y; + } + else + { + if (spacing_w < 0) spacing_w = (int)g.Style.ItemSpacing.x; + x = window->DC.CursorPosPrevLine.x + (float)spacing_w; + y = window->DC.CursorPosPrevLine.y; + } + window->DC.CurrentLineHeight = window->DC.PrevLineHeight; + window->DC.CurrentLineTextBaseOffset = window->DC.PrevLineTextBaseOffset; + window->DC.CursorPos = ImVec2(x, y); +} + +void ImGui::NextColumn() +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (window->SkipItems) + return; + + if (window->DC.ColumnsCount > 1) + { + ImGui::PopItemWidth(); + PopClipRect(); + + window->DC.ColumnsCellMaxY = ImMax(window->DC.ColumnsCellMaxY, window->DC.CursorPos.y); + if (++window->DC.ColumnsCurrent < window->DC.ColumnsCount) + { + window->DC.ColumnsOffsetX = ImGui::GetColumnOffset(window->DC.ColumnsCurrent) - window->DC.ColumnsStartX + g.Style.ItemSpacing.x; + } + else + { + window->DC.ColumnsCurrent = 0; + window->DC.ColumnsOffsetX = 0.0f; + window->DC.ColumnsCellMinY = window->DC.ColumnsCellMaxY; + } + window->DC.CursorPos.x = (float)(int)(window->Pos.x + window->DC.ColumnsStartX + window->DC.ColumnsOffsetX); + window->DC.CursorPos.y = window->DC.ColumnsCellMinY; + window->DC.CurrentLineHeight = 0.0f; + window->DC.CurrentLineTextBaseOffset = 0.0f; + + PushColumnClipRect(); + ImGui::PushItemWidth(ImGui::GetColumnWidth() * 0.65f); // FIXME + } +} + +int ImGui::GetColumnIndex() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->DC.ColumnsCurrent; +} + +int ImGui::GetColumnsCount() +{ + ImGuiWindow* window = GetCurrentWindow(); + return window->DC.ColumnsCount; +} + +static float GetDraggedColumnOffset(int column_index) +{ + // Active (dragged) column always follow mouse. The reason we need this is that dragging a column to the right edge of an auto-resizing + // window creates a feedback loop because we store normalized positions/ So while dragging we enforce absolute positioning + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + IM_ASSERT(g.ActiveId == window->DC.ColumnsSetID + ImGuiID(column_index)); + + float x = g.IO.MousePos.x + g.ActiveClickDeltaToCenter.x; + x -= window->Pos.x; + x = ImClamp(x, ImGui::GetColumnOffset(column_index-1)+g.Style.ColumnsMinSpacing, ImGui::GetColumnOffset(column_index+1)-g.Style.ColumnsMinSpacing); + + return x; +} + +float ImGui::GetColumnOffset(int column_index) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (column_index < 0) + column_index = window->DC.ColumnsCurrent; + + if (g.ActiveId) + { + const ImGuiID column_id = window->DC.ColumnsSetID + ImGuiID(column_index); + if (g.ActiveId == column_id) + return GetDraggedColumnOffset(column_index); + } + + // Read from cache + IM_ASSERT(column_index < (int)window->DC.ColumnsOffsetsT.size()); + const float t = window->DC.ColumnsOffsetsT[column_index]; + + const float min_x = window->DC.ColumnsStartX; + const float max_x = window->Size.x - (g.Style.ScrollbarWidth);// - window->WindowPadding().x; + const float offset = min_x + t * (max_x - min_x); + return offset; +} + +void ImGui::SetColumnOffset(int column_index, float offset) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + if (column_index < 0) + column_index = window->DC.ColumnsCurrent; + + IM_ASSERT(column_index < (int)window->DC.ColumnsOffsetsT.size()); + const ImGuiID column_id = window->DC.ColumnsSetID + ImGuiID(column_index); + + const float min_x = window->DC.ColumnsStartX; + const float max_x = window->Size.x - (g.Style.ScrollbarWidth);// - window->WindowPadding().x; + const float t = (offset - min_x) / (max_x - min_x); + window->DC.StateStorage->SetFloat(column_id, t); + window->DC.ColumnsOffsetsT[column_index] = t; +} + +float ImGui::GetColumnWidth(int column_index) +{ + ImGuiWindow* window = GetCurrentWindow(); + if (column_index < 0) + column_index = window->DC.ColumnsCurrent; + + const float w = GetColumnOffset(column_index+1) - GetColumnOffset(column_index); + return w; +} + +static void PushColumnClipRect(int column_index) +{ + ImGuiWindow* window = GetCurrentWindow(); + if (column_index < 0) + column_index = window->DC.ColumnsCurrent; + + const float x1 = window->Pos.x + ImGui::GetColumnOffset(column_index) - 1; + const float x2 = window->Pos.x + ImGui::GetColumnOffset(column_index+1) - 1; + PushClipRect(ImVec4(x1,-FLT_MAX,x2,+FLT_MAX)); +} + +void ImGui::Columns(int columns_count, const char* id, bool border) +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + + if (window->DC.ColumnsCount != 1) + { + if (window->DC.ColumnsCurrent != 0) + ItemSize(ImVec2(0,0)); // Advance to column 0 + ImGui::PopItemWidth(); + PopClipRect(); + + window->DC.ColumnsCellMaxY = ImMax(window->DC.ColumnsCellMaxY, window->DC.CursorPos.y); + window->DC.CursorPos.y = window->DC.ColumnsCellMaxY; + } + + // Draw columns borders and handle resize at the time of "closing" a columns set + if (window->DC.ColumnsCount != columns_count && window->DC.ColumnsCount != 1 && window->DC.ColumnsShowBorders && !window->SkipItems) + { + const float y1 = window->DC.ColumnsStartPos.y; + const float y2 = window->DC.CursorPos.y; + for (int i = 1; i < window->DC.ColumnsCount; i++) + { + float x = window->Pos.x + GetColumnOffset(i); + + const ImGuiID column_id = window->DC.ColumnsSetID + ImGuiID(i); + const ImRect column_rect(ImVec2(x-4,y1),ImVec2(x+4,y2)); + + if (IsClippedEx(column_rect, &column_id, false)) + continue; + + bool hovered, held; + ButtonBehavior(column_rect, column_id, &hovered, &held, true); + if (hovered || held) + g.MouseCursor = ImGuiMouseCursor_ResizeEW; + + // Draw before resize so our items positioning are in sync with the line being drawn + const ImU32 col = window->Color(held ? ImGuiCol_ColumnActive : hovered ? ImGuiCol_ColumnHovered : ImGuiCol_Column); + const float xi = (float)(int)x; + window->DrawList->AddLine(ImVec2(xi, y1), ImVec2(xi, y2), col); + + if (held) + { + if (g.ActiveIdIsJustActivated) + g.ActiveClickDeltaToCenter.x = x - g.IO.MousePos.x; + + x = GetDraggedColumnOffset(i); + SetColumnOffset(i, x); + } + } + } + + // Set state for first column + window->DC.ColumnsSetID = window->GetID(id ? id : ""); + window->DC.ColumnsCurrent = 0; + window->DC.ColumnsCount = columns_count; + window->DC.ColumnsShowBorders = border; + window->DC.ColumnsStartPos = window->DC.CursorPos; + window->DC.ColumnsCellMinY = window->DC.ColumnsCellMaxY = window->DC.CursorPos.y; + window->DC.ColumnsOffsetX = 0.0f; + window->DC.CursorPos.x = (float)(int)(window->Pos.x + window->DC.ColumnsStartX + window->DC.ColumnsOffsetX); + + if (window->DC.ColumnsCount != 1) + { + // Cache column offsets + window->DC.ColumnsOffsetsT.resize((size_t)columns_count + 1); + for (int column_index = 0; column_index < columns_count + 1; column_index++) + { + const ImGuiID column_id = window->DC.ColumnsSetID + ImGuiID(column_index); + RegisterAliveId(column_id); + const float default_t = column_index / (float)window->DC.ColumnsCount; + const float t = window->DC.StateStorage->GetFloat(column_id, default_t); // Cheaply store our floating point value inside the integer (could store an union into the map?) + window->DC.ColumnsOffsetsT[column_index] = t; + } + + PushColumnClipRect(); + ImGui::PushItemWidth(ImGui::GetColumnWidth() * 0.65f); + } + else + { + window->DC.ColumnsOffsetsT.resize(2); + window->DC.ColumnsOffsetsT[0] = 0.0f; + window->DC.ColumnsOffsetsT[1] = 1.0f; + } +} + + +inline void ImGui::Indent() +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + window->DC.ColumnsStartX += g.Style.IndentSpacing; + window->DC.CursorPos.x = window->Pos.x + window->DC.ColumnsStartX + window->DC.ColumnsOffsetX; +} + +inline void ImGui::Unindent() +{ + ImGuiState& g = *GImGui; + ImGuiWindow* window = GetCurrentWindow(); + window->DC.ColumnsStartX -= g.Style.IndentSpacing; + window->DC.CursorPos.x = window->Pos.x + window->DC.ColumnsStartX + window->DC.ColumnsOffsetX; +} + +void ImGui::TreePush(const char* str_id) +{ + ImGuiWindow* window = GetCurrentWindow(); + ImGui::Indent(); + window->DC.TreeDepth++; + PushID(str_id ? str_id : "#TreePush"); +} + +void ImGui::TreePush(const void* ptr_id) +{ + ImGuiWindow* window = GetCurrentWindow(); + ImGui::Indent(); + window->DC.TreeDepth++; + PushID(ptr_id ? ptr_id : (const void*)"#TreePush"); +} + +void ImGui::TreePop() +{ + ImGuiWindow* window = GetCurrentWindow(); + ImGui::Unindent(); + window->DC.TreeDepth--; + PopID(); +} + +void ImGui::Value(const char* prefix, bool b) +{ + ImGui::Text("%s: %s", prefix, (b ? "true" : "false")); +} + +void ImGui::Value(const char* prefix, int v) +{ + ImGui::Text("%s: %d", prefix, v); +} + +void ImGui::Value(const char* prefix, unsigned int v) +{ + ImGui::Text("%s: %d", prefix, v); +} + +void ImGui::Value(const char* prefix, float v, const char* float_format) +{ + if (float_format) + { + char fmt[64]; + ImFormatString(fmt, IM_ARRAYSIZE(fmt), "%%s: %s", float_format); + ImGui::Text(fmt, prefix, v); + } + else + { + ImGui::Text("%s: %.3f", prefix, v); + } +} + +void ImGui::Color(const char* prefix, const ImVec4& v) +{ + ImGui::Text("%s: (%.2f,%.2f,%.2f,%.2f)", prefix, v.x, v.y, v.z, v.w); + ImGui::SameLine(); + ImGui::ColorButton(v, true); +} + +void ImGui::Color(const char* prefix, unsigned int v) +{ + ImGui::Text("%s: %08X", prefix, v); + ImGui::SameLine(); + + ImVec4 col; + col.x = (float)((v >> 0) & 0xFF) / 255.0f; + col.y = (float)((v >> 8) & 0xFF) / 255.0f; + col.z = (float)((v >> 16) & 0xFF) / 255.0f; + col.w = (float)((v >> 24) & 0xFF) / 255.0f; + ImGui::ColorButton(col, true); +} + +//----------------------------------------------------------------------------- +// ImDrawList +//----------------------------------------------------------------------------- + +static ImVec4 GNullClipRect(-9999.0f,-9999.0f, +9999.0f, +9999.0f); + +void ImDrawList::Clear() +{ + commands.resize(0); + vtx_buffer.resize(0); + vtx_write = NULL; + clip_rect_stack.resize(0); + texture_id_stack.resize(0); +} + +void ImDrawList::ClearFreeMemory() +{ + commands.clear(); + vtx_buffer.clear(); + vtx_write = NULL; + clip_rect_stack.clear(); + texture_id_stack.clear(); +} + +void ImDrawList::AddDrawCmd() +{ + ImDrawCmd draw_cmd; + draw_cmd.vtx_count = 0; + draw_cmd.clip_rect = clip_rect_stack.empty() ? GNullClipRect : clip_rect_stack.back(); + draw_cmd.texture_id = texture_id_stack.empty() ? NULL : texture_id_stack.back(); + draw_cmd.user_callback = NULL; + draw_cmd.user_callback_data = NULL; + + IM_ASSERT(draw_cmd.clip_rect.x <= draw_cmd.clip_rect.z && draw_cmd.clip_rect.y <= draw_cmd.clip_rect.w); + commands.push_back(draw_cmd); +} + +void ImDrawList::AddCallback(ImDrawCallback callback, void* callback_data) +{ + ImDrawCmd* current_cmd = commands.empty() ? NULL : &commands.back(); + if (!current_cmd || current_cmd->vtx_count != 0 || current_cmd->user_callback != NULL) + { + AddDrawCmd(); + current_cmd = &commands.back(); + } + current_cmd->user_callback = callback; + current_cmd->user_callback_data = callback_data; + + // Force a new command after us + // We function this way so that the most common calls (AddLine, AddRect..) always have a command to add to without doing any check. + AddDrawCmd(); +} + +void ImDrawList::UpdateClipRect() +{ + ImDrawCmd* current_cmd = commands.empty() ? NULL : &commands.back(); + if (!current_cmd || (current_cmd->vtx_count != 0) || current_cmd->user_callback != NULL) + { + AddDrawCmd(); + } + else + { + current_cmd->clip_rect = clip_rect_stack.empty() ? GNullClipRect : clip_rect_stack.back(); + } +} + +// Scissoring. The values in clip_rect are x1, y1, x2, y2. +void ImDrawList::PushClipRect(const ImVec4& clip_rect) +{ + clip_rect_stack.push_back(clip_rect); + UpdateClipRect(); +} + +void ImDrawList::PushClipRectFullScreen() +{ + PushClipRect(GNullClipRect); + + // This would be more correct but we're not supposed to access ImGuiState from here? + //ImGuiState& g = *GImGui; + //if (g.IO.DisplayVisibleMin.x != g.IO.DisplayVisibleMax.x && g.IO.DisplayVisibleMin.y != g.IO.DisplayVisibleMax.y) + // PushClipRect(ImVec4(g.IO.DisplayVisibleMin.x, g.IO.DisplayVisibleMin.y, g.IO.DisplayVisibleMax.x, g.IO.DisplayVisibleMax.y)); + //else + // PushClipRect(ImVec4(0.0f, 0.0f, g.IO.DisplaySize.x, g.IO.DisplaySize.y)); +} + +void ImDrawList::PopClipRect() +{ + IM_ASSERT(clip_rect_stack.size() > 0); + clip_rect_stack.pop_back(); + UpdateClipRect(); +} + +void ImDrawList::UpdateTextureID() +{ + ImDrawCmd* current_cmd = commands.empty() ? NULL : &commands.back(); + const ImTextureID texture_id = texture_id_stack.empty() ? NULL : texture_id_stack.back(); + if (!current_cmd || (current_cmd->vtx_count != 0 && current_cmd->texture_id != texture_id) || current_cmd->user_callback != NULL) + { + AddDrawCmd(); + } + else + { + current_cmd->texture_id = texture_id; + } +} + +void ImDrawList::PushTextureID(const ImTextureID& texture_id) +{ + texture_id_stack.push_back(texture_id); + UpdateTextureID(); +} + +void ImDrawList::PopTextureID() +{ + IM_ASSERT(texture_id_stack.size() > 0); + texture_id_stack.pop_back(); + UpdateTextureID(); +} + +void ImDrawList::PrimReserve(unsigned int vtx_count) +{ + ImDrawCmd& draw_cmd = commands.back(); + draw_cmd.vtx_count += vtx_count; + + size_t vtx_buffer_size = vtx_buffer.size(); + vtx_buffer.resize(vtx_buffer_size + vtx_count); + vtx_write = &vtx_buffer[vtx_buffer_size]; +} + +void ImDrawList::PrimTriangle(const ImVec2& a, const ImVec2& b, const ImVec2& c, ImU32 col) +{ + const ImVec2 uv = GImGui->FontTexUvWhitePixel; + vtx_write[0].pos = a; vtx_write[0].uv = uv; vtx_write[0].col = col; + vtx_write[1].pos = b; vtx_write[1].uv = uv; vtx_write[1].col = col; + vtx_write[2].pos = c; vtx_write[2].uv = uv; vtx_write[2].col = col; + vtx_write += 3; +} + +void ImDrawList::PrimRect(const ImVec2& a, const ImVec2& c, ImU32 col) +{ + const ImVec2 uv = GImGui->FontTexUvWhitePixel; + const ImVec2 b(c.x, a.y); + const ImVec2 d(a.x, c.y); + vtx_write[0].pos = a; vtx_write[0].uv = uv; vtx_write[0].col = col; + vtx_write[1].pos = b; vtx_write[1].uv = uv; vtx_write[1].col = col; + vtx_write[2].pos = c; vtx_write[2].uv = uv; vtx_write[2].col = col; + vtx_write[3].pos = a; vtx_write[3].uv = uv; vtx_write[3].col = col; + vtx_write[4].pos = c; vtx_write[4].uv = uv; vtx_write[4].col = col; + vtx_write[5].pos = d; vtx_write[5].uv = uv; vtx_write[5].col = col; + vtx_write += 6; +} + +void ImDrawList::PrimRectUV(const ImVec2& a, const ImVec2& c, const ImVec2& uv_a, const ImVec2& uv_c, ImU32 col) +{ + const ImVec2 b(c.x, a.y); + const ImVec2 d(a.x, c.y); + const ImVec2 uv_b(uv_c.x, uv_a.y); + const ImVec2 uv_d(uv_a.x, uv_c.y); + vtx_write[0].pos = a; vtx_write[0].uv = uv_a; vtx_write[0].col = col; + vtx_write[1].pos = b; vtx_write[1].uv = uv_b; vtx_write[1].col = col; + vtx_write[2].pos = c; vtx_write[2].uv = uv_c; vtx_write[2].col = col; + vtx_write[3].pos = a; vtx_write[3].uv = uv_a; vtx_write[3].col = col; + vtx_write[4].pos = c; vtx_write[4].uv = uv_c; vtx_write[4].col = col; + vtx_write[5].pos = d; vtx_write[5].uv = uv_d; vtx_write[5].col = col; + vtx_write += 6; +} + +void ImDrawList::PrimQuad(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, ImU32 col) +{ + const ImVec2 uv = GImGui->FontTexUvWhitePixel; + vtx_write[0].pos = a; vtx_write[0].uv = uv; vtx_write[0].col = col; + vtx_write[1].pos = b; vtx_write[1].uv = uv; vtx_write[1].col = col; + vtx_write[2].pos = c; vtx_write[2].uv = uv; vtx_write[2].col = col; + vtx_write[3].pos = a; vtx_write[3].uv = uv; vtx_write[3].col = col; + vtx_write[4].pos = c; vtx_write[4].uv = uv; vtx_write[4].col = col; + vtx_write[5].pos = d; vtx_write[5].uv = uv; vtx_write[5].col = col; + vtx_write += 6; +} + +// FIXME-OPT: In many instances the caller could provide a normal. +void ImDrawList::PrimLine(const ImVec2& a, const ImVec2& b, ImU32 col, float thickness) +{ + const float inv_length = 1.0f / sqrtf(ImLengthSqr(b - a)); + const float dx = (b.x - a.x) * (thickness * 0.5f * inv_length); // line direction, halved + const float dy = (b.y - a.y) * (thickness * 0.5f * inv_length); // line direction, halved + + const ImVec2 pa(a.x + dy, a.y - dx); + const ImVec2 pb(b.x + dy, b.y - dx); + const ImVec2 pc(b.x - dy, b.y + dx); + const ImVec2 pd(a.x - dy, a.y + dx); + PrimQuad(pa, pb, pc, pd, col); +} + +void ImDrawList::AddLine(const ImVec2& a, const ImVec2& b, ImU32 col, float thickness) +{ + if ((col >> 24) == 0) + return; + + PrimReserve(6); + PrimLine(a, b, col, thickness); +} + +void ImDrawList::AddArcFast(const ImVec2& center, float radius, ImU32 col, int a_min, int a_max, bool filled, const ImVec2& third_point_offset) +{ + if ((col >> 24) == 0) + return; + + const int SAMPLES = 12; + static ImVec2 circle_vtx[SAMPLES]; + static bool circle_vtx_builds = false; + if (!circle_vtx_builds) + { + for (int i = 0; i < SAMPLES; i++) + { + const float a = ((float)i / (float)SAMPLES) * 2*PI; + circle_vtx[i].x = cosf(a + PI); + circle_vtx[i].y = sinf(a + PI); + } + circle_vtx_builds = true; + } + + const ImVec2 uv = GImGui->FontTexUvWhitePixel; + if (filled) + { + PrimReserve((unsigned int)(a_max-a_min) * 3); + for (int a0 = a_min; a0 < a_max; a0++) + { + int a1 = (a0 + 1 == SAMPLES) ? 0 : a0 + 1; + PrimVtx(center + circle_vtx[a0] * radius, uv, col); + PrimVtx(center + circle_vtx[a1] * radius, uv, col); + PrimVtx(center + third_point_offset, uv, col); + } + } + else + { + PrimReserve((unsigned int)(a_max-a_min) * 6); + for (int a0 = a_min; a0 < a_max; a0++) + { + int a1 = (a0 + 1 == SAMPLES) ? 0 : a0 + 1; + PrimLine(center + circle_vtx[a0] * radius, center + circle_vtx[a1] * radius, col); + } + } +} + +void ImDrawList::AddRect(const ImVec2& a, const ImVec2& b, ImU32 col, float rounding, int rounding_corners) +{ + if ((col >> 24) == 0) + return; + + float r = rounding; + r = ImMin(r, fabsf(b.x-a.x) * ( ((rounding_corners&(1|2))==(1|2)) || ((rounding_corners&(4|8))==(4|8)) ? 0.5f : 1.0f )); + r = ImMin(r, fabsf(b.y-a.y) * ( ((rounding_corners&(1|8))==(1|8)) || ((rounding_corners&(2|4))==(2|4)) ? 0.5f : 1.0f )); + + if (r == 0.0f || rounding_corners == 0) + { + PrimReserve(4*6); + PrimLine(ImVec2(a.x,a.y), ImVec2(b.x,a.y), col); + PrimLine(ImVec2(b.x,a.y), ImVec2(b.x,b.y), col); + PrimLine(ImVec2(b.x,b.y), ImVec2(a.x,b.y), col); + PrimLine(ImVec2(a.x,b.y), ImVec2(a.x,a.y), col); + } + else + { + PrimReserve(4*6); + PrimLine(ImVec2(a.x + ((rounding_corners & 1)?r:0), a.y), ImVec2(b.x - ((rounding_corners & 2)?r:0), a.y), col); + PrimLine(ImVec2(b.x, a.y + ((rounding_corners & 2)?r:0)), ImVec2(b.x, b.y - ((rounding_corners & 4)?r:0)), col); + PrimLine(ImVec2(b.x - ((rounding_corners & 4)?r:0), b.y), ImVec2(a.x + ((rounding_corners & 8)?r:0), b.y), col); + PrimLine(ImVec2(a.x, b.y - ((rounding_corners & 8)?r:0)), ImVec2(a.x, a.y + ((rounding_corners & 1)?r:0)), col); + + if (rounding_corners & 1) AddArcFast(ImVec2(a.x+r,a.y+r), r, col, 0, 3); + if (rounding_corners & 2) AddArcFast(ImVec2(b.x-r,a.y+r), r, col, 3, 6); + if (rounding_corners & 4) AddArcFast(ImVec2(b.x-r,b.y-r), r, col, 6, 9); + if (rounding_corners & 8) AddArcFast(ImVec2(a.x+r,b.y-r), r, col, 9, 12); + } +} + +void ImDrawList::AddRectFilled(const ImVec2& a, const ImVec2& b, ImU32 col, float rounding, int rounding_corners) +{ + if ((col >> 24) == 0) + return; + + float r = rounding; + r = ImMin(r, fabsf(b.x-a.x) * ( ((rounding_corners&(1|2))==(1|2)) || ((rounding_corners&(4|8))==(4|8)) ? 0.5f : 1.0f )); + r = ImMin(r, fabsf(b.y-a.y) * ( ((rounding_corners&(1|8))==(1|8)) || ((rounding_corners&(2|4))==(2|4)) ? 0.5f : 1.0f )); + + if (r == 0.0f || rounding_corners == 0) + { + // Use triangle so we can merge more draw calls together (at the cost of extra vertices) + PrimReserve(6); + PrimRect(a, b, col); + } + else + { + PrimReserve(6+6*2); + PrimRect(ImVec2(a.x+r,a.y), ImVec2(b.x-r,b.y), col); + + float top_y = (rounding_corners & 1) ? a.y+r : a.y; + float bot_y = (rounding_corners & 8) ? b.y-r : b.y; + PrimRect(ImVec2(a.x,top_y), ImVec2(a.x+r,bot_y), col); + + top_y = (rounding_corners & 2) ? a.y+r : a.y; + bot_y = (rounding_corners & 4) ? b.y-r : b.y; + PrimRect(ImVec2(b.x-r,top_y), ImVec2(b.x,bot_y), col); + + if (rounding_corners & 1) AddArcFast(ImVec2(a.x+r,a.y+r), r, col, 0, 3, true); + if (rounding_corners & 2) AddArcFast(ImVec2(b.x-r,a.y+r), r, col, 3, 6, true); + if (rounding_corners & 4) AddArcFast(ImVec2(b.x-r,b.y-r), r, col, 6, 9, true); + if (rounding_corners & 8) AddArcFast(ImVec2(a.x+r,b.y-r), r, col, 9, 12, true); + } +} + +void ImDrawList::AddTriangleFilled(const ImVec2& a, const ImVec2& b, const ImVec2& c, ImU32 col) +{ + if ((col >> 24) == 0) + return; + + PrimReserve(3); + PrimTriangle(a, b, c, col); +} + +void ImDrawList::AddCircle(const ImVec2& centre, float radius, ImU32 col, int num_segments) +{ + if ((col >> 24) == 0) + return; + + PrimReserve((unsigned int)num_segments*6); + const float a_step = 2*PI/(float)num_segments; + float a0 = 0.0f; + for (int i = 0; i < num_segments; i++) + { + const float a1 = (i + 1) == num_segments ? 0.0f : a0 + a_step; + PrimLine(centre + ImVec2(cosf(a0), sinf(a0))*radius, centre + ImVec2(cosf(a1), sinf(a1))*radius, col); + a0 = a1; + } +} + +void ImDrawList::AddCircleFilled(const ImVec2& centre, float radius, ImU32 col, int num_segments) +{ + if ((col >> 24) == 0) + return; + + const ImVec2 uv = GImGui->FontTexUvWhitePixel; + PrimReserve((unsigned int)num_segments*3); + const float a_step = 2*PI/(float)num_segments; + float a0 = 0.0f; + for (int i = 0; i < num_segments; i++) + { + const float a1 = (i + 1) == num_segments ? 0.0f : a0 + a_step; + PrimVtx(centre + ImVec2(cosf(a0), sinf(a0))*radius, uv, col); + PrimVtx(centre + ImVec2(cosf(a1), sinf(a1))*radius, uv, col); + PrimVtx(centre, uv, col); + a0 = a1; + } +} + +void ImDrawList::AddText(const ImFont* font, float font_size, const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end, float wrap_width, const ImVec2* cpu_clip_max) +{ + if ((col >> 24) == 0) + return; + + if (text_end == NULL) + text_end = text_begin + strlen(text_begin); + if (text_begin == text_end) + return; + + IM_ASSERT(font->ContainerAtlas->TexID == texture_id_stack.back()); // Use high-level ImGui::PushFont() or low-level ImDrawList::PushTextureId() to change font. + + // reserve vertices for worse case + const unsigned int char_count = (unsigned int)(text_end - text_begin); + const unsigned int vtx_count_max = char_count * 6; + const size_t vtx_begin = vtx_buffer.size(); + PrimReserve(vtx_count_max); + + font->RenderText(font_size, pos, col, clip_rect_stack.back(), text_begin, text_end, this, wrap_width, cpu_clip_max); + + // give back unused vertices + vtx_buffer.resize((size_t)(vtx_write - &vtx_buffer.front())); + const size_t vtx_count = vtx_buffer.size() - vtx_begin; + commands.back().vtx_count -= (unsigned int)(vtx_count_max - vtx_count); + vtx_write -= (vtx_count_max - vtx_count); +} + +void ImDrawList::AddImage(ImTextureID user_texture_id, const ImVec2& a, const ImVec2& b, const ImVec2& uv0, const ImVec2& uv1, ImU32 col) +{ + if ((col >> 24) == 0) + return; + + // FIXME-OPT: This is wasting draw calls. + const bool push_texture_id = texture_id_stack.empty() || user_texture_id != texture_id_stack.back(); + if (push_texture_id) + PushTextureID(user_texture_id); + + PrimReserve(6); + PrimRectUV(a, b, uv0, uv1, col); + + if (push_texture_id) + PopTextureID(); +} + +//----------------------------------------------------------------------------- +// ImFontAtlias +//----------------------------------------------------------------------------- + +struct ImFontAtlas::ImFontAtlasData +{ + // Input + ImFont* OutFont; // Load into this font + void* TTFData; // TTF data, we own the memory + size_t TTFDataSize; // TTF data size, in bytes + float SizePixels; // Desired output size, in pixels + const ImWchar* GlyphRanges; // List of Unicode range (2 value per range, values are inclusive, zero-terminated list) + int FontNo; // Index of font within .TTF file (0) + + // Temporary Build Data + stbtt_fontinfo FontInfo; + stbrp_rect* Rects; + stbtt_pack_range* Ranges; + int RangesCount; +}; + +ImFontAtlas::ImFontAtlas() +{ + TexID = NULL; + TexPixelsAlpha8 = NULL; + TexPixelsRGBA32 = NULL; + TexWidth = TexHeight = 0; + TexUvWhitePixel = ImVec2(0, 0); +} + +ImFontAtlas::~ImFontAtlas() +{ + Clear(); +} + +void ImFontAtlas::ClearInputData() +{ + for (size_t i = 0; i < InputData.size(); i++) + { + if (InputData[i]->TTFData) + ImGui::MemFree(InputData[i]->TTFData); + ImGui::MemFree(InputData[i]); + } + InputData.clear(); +} + +void ImFontAtlas::ClearTexData() +{ + if (TexPixelsAlpha8) + ImGui::MemFree(TexPixelsAlpha8); + if (TexPixelsRGBA32) + ImGui::MemFree(TexPixelsRGBA32); + TexPixelsAlpha8 = NULL; + TexPixelsRGBA32 = NULL; +} + +void ImFontAtlas::Clear() +{ + ClearInputData(); + ClearTexData(); + for (size_t i = 0; i < Fonts.size(); i++) + { + Fonts[i]->~ImFont(); + ImGui::MemFree(Fonts[i]); + } + Fonts.clear(); +} + +void ImGui::GetDefaultFontData(const void** fnt_data, unsigned int* fnt_size, const void** png_data, unsigned int* png_size) +{ + printf("GetDefaultFontData() is obsoleted in ImGui 1.30.\n"); + printf("Please use ImGui::GetIO().Fonts->GetTexDataAsRGBA32() or GetTexDataAsAlpha8() functions to retrieve uncompressed texture data.\n"); + if (fnt_data) *fnt_data = NULL; + if (fnt_size) *fnt_size = 0; + if (png_data) *png_data = NULL; + if (png_size) *png_size = 0; + IM_ASSERT(false); +} + +void ImFontAtlas::GetTexDataAsAlpha8(unsigned char** out_pixels, int* out_width, int* out_height, int* out_bytes_per_pixel) +{ + // Lazily build + if (TexPixelsAlpha8 == NULL) + { + if (InputData.empty()) + AddFontDefault(); + Build(); + } + + *out_pixels = TexPixelsAlpha8; + if (out_width) *out_width = TexWidth; + if (out_height) *out_height = TexHeight; + if (out_bytes_per_pixel) *out_bytes_per_pixel = 1; +} + +void ImFontAtlas::GetTexDataAsRGBA32(unsigned char** out_pixels, int* out_width, int* out_height, int* out_bytes_per_pixel) +{ + // Lazily convert to RGBA32 format + // Although it is likely to be the most commonly used format, our font rendering is 8 bpp + if (!TexPixelsRGBA32) + { + unsigned char* pixels; + GetTexDataAsAlpha8(&pixels, NULL, NULL); + TexPixelsRGBA32 = (unsigned int*)ImGui::MemAlloc((size_t)(TexWidth * TexHeight * 4)); + const unsigned char* src = pixels; + unsigned int* dst = TexPixelsRGBA32; + for (int n = TexWidth * TexHeight; n > 0; n--) + *dst++ = ((unsigned int)(*src++) << 24) | 0x00FFFFFF; + } + + *out_pixels = (unsigned char*)TexPixelsRGBA32; + if (out_width) *out_width = TexWidth; + if (out_height) *out_height = TexHeight; + if (out_bytes_per_pixel) *out_bytes_per_pixel = 4; +} + +static void GetDefaultCompressedFontDataTTF(const void** ttf_compressed_data, unsigned int* ttf_compressed_size); +static unsigned int stb_decompress_length(unsigned char *input); +static unsigned int stb_decompress(unsigned char *output, unsigned char *i, unsigned int length); + +// Load embedded ProggyClean.ttf at size 13 +ImFont* ImFontAtlas::AddFontDefault() +{ + unsigned int ttf_compressed_size; + const void* ttf_compressed; + GetDefaultCompressedFontDataTTF(&ttf_compressed, &ttf_compressed_size); + ImFont* font = AddFontFromMemoryCompressedTTF(ttf_compressed, ttf_compressed_size, 13.0f, GetGlyphRangesDefault(), 0); + font->DisplayOffset.y += 1; + return font; +} + +ImFont* ImFontAtlas::AddFontFromFileTTF(const char* filename, float size_pixels, const ImWchar* glyph_ranges, int font_no) +{ + void* data = NULL; + size_t data_size = 0; + if (!ImLoadFileToMemory(filename, "rb", (void**)&data, &data_size)) + { + IM_ASSERT(0); // Could not load file. + return NULL; + } + + ImFont* font = AddFontFromMemoryTTF(data, (unsigned int)data_size, size_pixels, glyph_ranges, font_no); + return font; +} + +// NB: ownership of 'data' is given to ImFontAtlas which will clear it. +ImFont* ImFontAtlas::AddFontFromMemoryTTF(void* in_ttf_data, unsigned int in_ttf_data_size, float size_pixels, const ImWchar* glyph_ranges, int font_no) +{ + // Create new font + ImFont* font = (ImFont*)ImGui::MemAlloc(sizeof(ImFont)); + new (font) ImFont(); + Fonts.push_back(font); + + // Add to build list + ImFontAtlasData* data = (ImFontAtlasData*)ImGui::MemAlloc(sizeof(ImFontAtlasData)); + memset(data, 0, sizeof(ImFontAtlasData)); + data->OutFont = font; + data->TTFData = in_ttf_data; + data->TTFDataSize = in_ttf_data_size; + data->SizePixels = size_pixels; + data->GlyphRanges = glyph_ranges; + data->FontNo = font_no; + InputData.push_back(data); + + // Invalidate texture + ClearTexData(); + + return font; +} + +ImFont* ImFontAtlas::AddFontFromMemoryCompressedTTF(const void* in_compressed_ttf_data, unsigned int in_compressed_ttf_data_size, float size_pixels, const ImWchar* glyph_ranges, int font_no) +{ + // Decompress + const size_t buf_decompressed_size = stb_decompress_length((unsigned char*)in_compressed_ttf_data); + unsigned char* buf_decompressed = (unsigned char *)ImGui::MemAlloc(buf_decompressed_size); + stb_decompress(buf_decompressed, (unsigned char*)in_compressed_ttf_data, in_compressed_ttf_data_size); + + // Add + ImFont* font = AddFontFromMemoryTTF(buf_decompressed, (unsigned int)buf_decompressed_size, size_pixels, glyph_ranges, font_no); + return font; +} + +bool ImFontAtlas::Build() +{ + IM_ASSERT(InputData.size() > 0); + + TexID = NULL; + TexWidth = TexHeight = 0; + TexUvWhitePixel = ImVec2(0, 0); + ClearTexData(); + + // Initialize font information early (so we can error without any cleanup) + count glyphs + int total_glyph_count = 0; + int total_glyph_range_count = 0; + for (size_t input_i = 0; input_i < InputData.size(); input_i++) + { + ImFontAtlasData& data = *InputData[input_i]; + IM_ASSERT(data.OutFont && !data.OutFont->IsLoaded()); + const int font_offset = stbtt_GetFontOffsetForIndex((unsigned char*)data.TTFData, data.FontNo); + IM_ASSERT(font_offset >= 0); + if (!stbtt_InitFont(&data.FontInfo, (unsigned char*)data.TTFData, font_offset)) + return false; + + if (!data.GlyphRanges) + data.GlyphRanges = GetGlyphRangesDefault(); + for (const ImWchar* in_range = data.GlyphRanges; in_range[0] && in_range[1]; in_range += 2) + { + total_glyph_count += (in_range[1] - in_range[0]) + 1; + total_glyph_range_count++; + } + } + + // Start packing + TexWidth = (total_glyph_count > 1000) ? 1024 : 512; // Width doesn't actually matters. + TexHeight = 0; + const int max_tex_height = 1024*32; + stbtt_pack_context spc; + int ret = stbtt_PackBegin(&spc, NULL, TexWidth, max_tex_height, 0, 1, NULL); + IM_ASSERT(ret); + stbtt_PackSetOversampling(&spc, 1, 1); + + // Pack our extra data rectangles first, so it will be on the upper-left corner of our texture (UV will have small values). + ImVector extra_rects; + RenderCustomTexData(0, &extra_rects); + stbrp_pack_rects((stbrp_context*)spc.pack_info, &extra_rects[0], (int)extra_rects.size()); + for (size_t i = 0; i < extra_rects.size(); i++) + if (extra_rects[i].was_packed) + TexHeight = ImMax(TexHeight, extra_rects[i].y + extra_rects[i].h); + + // Allocate packing character data and flag packed characters buffer as non-packed (x0=y0=x1=y1=0) + int buf_packedchars_n = 0, buf_rects_n = 0, buf_ranges_n = 0; + stbtt_packedchar* buf_packedchars = (stbtt_packedchar*)ImGui::MemAlloc(total_glyph_count * sizeof(stbtt_packedchar)); + stbrp_rect* buf_rects = (stbrp_rect*)ImGui::MemAlloc(total_glyph_count * sizeof(stbrp_rect)); + stbtt_pack_range* buf_ranges = (stbtt_pack_range*)ImGui::MemAlloc(total_glyph_range_count * sizeof(stbtt_pack_range)); + memset(buf_packedchars, 0, total_glyph_count * sizeof(stbtt_packedchar)); + memset(buf_rects, 0, total_glyph_count * sizeof(stbrp_rect)); // Unnecessary but let's clear this for the sake of sanity. + memset(buf_ranges, 0, total_glyph_range_count * sizeof(stbtt_pack_range)); + + // First font pass: pack all glyphs (no rendering at this point, we are working with glyph sizes only) + for (size_t input_i = 0; input_i < InputData.size(); input_i++) + { + ImFontAtlasData& data = *InputData[input_i]; + + // Setup ranges + int glyph_count = 0; + int glyph_ranges_count = 0; + for (const ImWchar* in_range = data.GlyphRanges; in_range[0] && in_range[1]; in_range += 2) + { + glyph_count += (in_range[1] - in_range[0]) + 1; + glyph_ranges_count++; + } + data.Ranges = buf_ranges + buf_ranges_n; + data.RangesCount = glyph_ranges_count; + buf_ranges_n += glyph_ranges_count; + for (int i = 0; i < glyph_ranges_count; i++) + { + const ImWchar* in_range = &data.GlyphRanges[i * 2]; + stbtt_pack_range& range = data.Ranges[i]; + range.font_size = data.SizePixels; + range.first_unicode_char_in_range = in_range[0]; + range.num_chars_in_range = (in_range[1] - in_range[0]) + 1; + range.chardata_for_range = buf_packedchars + buf_packedchars_n; + buf_packedchars_n += range.num_chars_in_range; + } + + // Pack + data.Rects = buf_rects + buf_rects_n; + buf_rects_n += glyph_count; + const int n = stbtt_PackFontRangesGatherRects(&spc, &data.FontInfo, data.Ranges, data.RangesCount, data.Rects); + stbrp_pack_rects((stbrp_context*)spc.pack_info, data.Rects, n); + + // Extend texture height + for (int i = 0; i < n; i++) + if (data.Rects[i].was_packed) + TexHeight = ImMax(TexHeight, data.Rects[i].y + data.Rects[i].h); + } + IM_ASSERT(buf_rects_n == total_glyph_count); + IM_ASSERT(buf_packedchars_n == total_glyph_count); + IM_ASSERT(buf_ranges_n == total_glyph_range_count); + + // Create texture + TexHeight = ImUpperPowerOfTwo(TexHeight); + TexPixelsAlpha8 = (unsigned char*)ImGui::MemAlloc(TexWidth * TexHeight); + memset(TexPixelsAlpha8, 0, TexWidth * TexHeight); + spc.pixels = TexPixelsAlpha8; + spc.height = TexHeight; + + // Second pass: render characters + for (size_t input_i = 0; input_i < InputData.size(); input_i++) + { + ImFontAtlasData& data = *InputData[input_i]; + ret = stbtt_PackFontRangesRenderIntoRects(&spc, &data.FontInfo, data.Ranges, data.RangesCount, data.Rects); + data.Rects = NULL; + } + + // End packing + stbtt_PackEnd(&spc); + ImGui::MemFree(buf_rects); + buf_rects = NULL; + + // Third pass: setup ImFont and glyphs for runtime + for (size_t input_i = 0; input_i < InputData.size(); input_i++) + { + ImFontAtlasData& data = *InputData[input_i]; + data.OutFont->ContainerAtlas = this; + data.OutFont->FontSize = data.SizePixels; + + const float font_scale = stbtt_ScaleForPixelHeight(&data.FontInfo, data.SizePixels); + int font_ascent, font_descent, font_line_gap; + stbtt_GetFontVMetrics(&data.FontInfo, &font_ascent, &font_descent, &font_line_gap); + + const float uv_scale_x = 1.0f / TexWidth; + const float uv_scale_y = 1.0f / TexHeight; + const int character_spacing_x = 1; + for (int i = 0; i < data.RangesCount; i++) + { + stbtt_pack_range& range = data.Ranges[i]; + for (int char_idx = 0; char_idx < range.num_chars_in_range; char_idx += 1) + { + const int codepoint = range.first_unicode_char_in_range + char_idx; + const stbtt_packedchar& pc = range.chardata_for_range[char_idx]; + if (!pc.x0 && !pc.x1 && !pc.y0 && !pc.y1) + continue; + + data.OutFont->Glyphs.resize(data.OutFont->Glyphs.size() + 1); + ImFont::Glyph& glyph = data.OutFont->Glyphs.back(); + glyph.Codepoint = (ImWchar)codepoint; + glyph.Width = (signed short)pc.x1 - pc.x0 + 1; + glyph.Height = (signed short)pc.y1 - pc.y0 + 1; + glyph.XOffset = (signed short)(pc.xoff); + glyph.YOffset = (signed short)(pc.yoff + (int)(font_ascent * font_scale)); + glyph.XAdvance = (signed short)(pc.xadvance + character_spacing_x); // Bake spacing into XAdvance + glyph.U0 = ((float)pc.x0 - 0.5f) * uv_scale_x; + glyph.V0 = ((float)pc.y0 - 0.5f) * uv_scale_y; + glyph.U1 = ((float)pc.x0 - 0.5f + glyph.Width) * uv_scale_x; + glyph.V1 = ((float)pc.y0 - 0.5f + glyph.Height) * uv_scale_y; + } + } + + data.OutFont->BuildLookupTable(); + } + + // Cleanup temporaries + ImGui::MemFree(buf_packedchars); + ImGui::MemFree(buf_ranges); + buf_packedchars = NULL; + buf_ranges = NULL; + ClearInputData(); + + // Render into our custom data block + RenderCustomTexData(1, &extra_rects); + + return true; +} + +void ImFontAtlas::RenderCustomTexData(int pass, void* p_rects) +{ + // . = white layer, X = black layer, others are blank + const int TEX_DATA_W = 90; + const int TEX_DATA_H = 27; + const char texture_data[TEX_DATA_W*TEX_DATA_H+1] = + { + "..- -XXXXXXX- X - X -XXXXXXX - XXXXXXX" + "..- -X.....X- X.X - X.X -X.....X - X.....X" + "--- -XXX.XXX- X...X - X...X -X....X - X....X" + "X - X.X - X.....X - X.....X -X...X - X...X" + "XX - X.X -X.......X- X.......X -X..X.X - X.X..X" + "X.X - X.X -XXXX.XXXX- XXXX.XXXX -X.X X.X - X.X X.X" + "X..X - X.X - X.X - X.X -XX X.X - X.X XX" + "X...X - X.X - X.X - XX X.X XX - X.X - X.X " + "X....X - X.X - X.X - X.X X.X X.X - X.X - X.X " + "X.....X - X.X - X.X - X..X X.X X..X - X.X - X.X " + "X......X - X.X - X.X - X...XXXXXX.XXXXXX...X - X.X XX-XX X.X " + "X.......X - X.X - X.X -X.....................X- X.X X.X-X.X X.X " + "X........X - X.X - X.X - X...XXXXXX.XXXXXX...X - X.X..X-X..X.X " + "X.........X -XXX.XXX- X.X - X..X X.X X..X - X...X-X...X " + "X..........X-X.....X- X.X - X.X X.X X.X - X....X-X....X " + "X......XXXXX-XXXXXXX- X.X - XX X.X XX - X.....X-X.....X " + "X...X..X --------- X.X - X.X - XXXXXXX-XXXXXXX " + "X..X X..X - -XXXX.XXXX- XXXX.XXXX ------------------------------------" + "X.X X..X - -X.......X- X.......X - XX XX - " + "XX X..X - - X.....X - X.....X - X.X X.X - " + " X..X - X...X - X...X - X..X X..X - " + " XX - X.X - X.X - X...XXXXXXXXXXXXX...X - " + "------------ - X - X -X.....................X- " + " ----------------------------------- X...XXXXXXXXXXXXX...X - " + " - X..X X..X - " + " - X.X X.X - " + " - XX XX - " + }; + + ImVector& rects = *(ImVector*)p_rects; + if (pass == 0) + { + stbrp_rect r; + memset(&r, 0, sizeof(r)); + r.w = (TEX_DATA_W*2)+1; + r.h = TEX_DATA_H+1; + rects.push_back(r); + } + else if (pass == 1) + { + // Copy pixels + const stbrp_rect& r = rects[0]; + for (int y = 0, n = 0; y < TEX_DATA_H; y++) + for (int x = 0; x < TEX_DATA_W; x++, n++) + { + const int offset0 = (int)(r.x + x) + (int)(r.y + y) * TexWidth; + const int offset1 = offset0 + 1 + TEX_DATA_W; + TexPixelsAlpha8[offset0] = texture_data[n] == '.' ? 0xFF : 0x00; + TexPixelsAlpha8[offset1] = texture_data[n] == 'X' ? 0xFF : 0x00; + } + const ImVec2 tex_uv_scale(1.0f / TexWidth, 1.0f / TexHeight); + TexUvWhitePixel = ImVec2(r.x + 0.5f, r.y + 0.5f) * tex_uv_scale; + + const ImVec2 cursor_datas[ImGuiMouseCursor_Count_][3] = + { + // Pos ........ Size ......... Offset ...... + { ImVec2(0,3), ImVec2(12,19), ImVec2( 0, 0) }, // ImGuiMouseCursor_Arrow + { ImVec2(13,0), ImVec2(7,16), ImVec2( 4, 8) }, // ImGuiMouseCursor_TextInput + { ImVec2(31,0), ImVec2(23,23), ImVec2(11,11) }, // ImGuiMouseCursor_Move + { ImVec2(21,0), ImVec2( 9,23), ImVec2( 5,11) }, // ImGuiMouseCursor_ResizeNS + { ImVec2(55,18),ImVec2(23, 9), ImVec2(11, 5) }, // ImGuiMouseCursor_ResizeEW + { ImVec2(73,0), ImVec2(17,17), ImVec2( 9, 9) }, // ImGuiMouseCursor_ResizeNESW + { ImVec2(55,0), ImVec2(17,17), ImVec2( 9, 9) }, // ImGuiMouseCursor_ResizeNWSE + }; + + for (int type = 0; type < ImGuiMouseCursor_Count_; type++) + { + ImGuiMouseCursorData& cursor_data = GImGui->MouseCursorData[type]; + ImVec2 pos = cursor_datas[type][0] + ImVec2((float)r.x, (float)r.y); + const ImVec2 size = cursor_datas[type][1]; + cursor_data.Type = type; + cursor_data.Size = size; + cursor_data.Offset = cursor_datas[type][2]; + cursor_data.TexUvMin[0] = (pos) * tex_uv_scale; + cursor_data.TexUvMax[0] = (pos + size) * tex_uv_scale; + pos.x += TEX_DATA_W+1; + cursor_data.TexUvMin[1] = (pos) * tex_uv_scale; + cursor_data.TexUvMax[1] = (pos + size) * tex_uv_scale; + } + } +} + +//----------------------------------------------------------------------------- +// ImFont +//----------------------------------------------------------------------------- + +ImFont::ImFont() +{ + Scale = 1.0f; + FallbackChar = (ImWchar)'?'; + Clear(); +} + +ImFont::~ImFont() +{ + // Invalidate active font so that the user gets a clear crash instead of a dangling pointer. + // If you want to delete fonts you need to do it between Render() and NewFrame(). + ImGuiState& g = *GImGui; + if (g.Font == this) + g.Font = NULL; + Clear(); +} + +void ImFont::Clear() +{ + FontSize = 0.0f; + DisplayOffset = ImVec2(-0.5f, 0.5f); + ContainerAtlas = NULL; + Glyphs.clear(); + FallbackGlyph = NULL; + FallbackXAdvance = 0.0f; + IndexXAdvance.clear(); + IndexLookup.clear(); +} + +// Retrieve list of range (2 int per range, values are inclusive) +const ImWchar* ImFontAtlas::GetGlyphRangesDefault() +{ + static const ImWchar ranges[] = + { + 0x0020, 0x00FF, // Basic Latin + Latin Supplement + 0, + }; + return &ranges[0]; +} + +const ImWchar* ImFontAtlas::GetGlyphRangesChinese() +{ + static const ImWchar ranges[] = + { + 0x0020, 0x00FF, // Basic Latin + Latin Supplement + 0x3000, 0x30FF, // Punctuations, Hiragana, Katakana + 0x31F0, 0x31FF, // Katakana Phonetic Extensions + 0xFF00, 0xFFEF, // Half-width characters + 0x4e00, 0x9FAF, // CJK Ideograms + 0, + }; + return &ranges[0]; +} + +const ImWchar* ImFontAtlas::GetGlyphRangesJapanese() +{ + // Store the 1946 ideograms code points as successive offsets from the initial unicode codepoint 0x4E00. Each offset has an implicit +1. + // This encoding helps us reduce the source code size. + static const short offsets_from_0x4E00[] = + { + -1,0,1,3,0,0,0,0,1,0,5,1,1,0,7,4,6,10,0,1,9,9,7,1,3,19,1,10,7,1,0,1,0,5,1,0,6,4,2,6,0,0,12,6,8,0,3,5,0,1,0,9,0,0,8,1,1,3,4,5,13,0,0,8,2,17, + 4,3,1,1,9,6,0,0,0,2,1,3,2,22,1,9,11,1,13,1,3,12,0,5,9,2,0,6,12,5,3,12,4,1,2,16,1,1,4,6,5,3,0,6,13,15,5,12,8,14,0,0,6,15,3,6,0,18,8,1,6,14,1, + 5,4,12,24,3,13,12,10,24,0,0,0,1,0,1,1,2,9,10,2,2,0,0,3,3,1,0,3,8,0,3,2,4,4,1,6,11,10,14,6,15,3,4,15,1,0,0,5,2,2,0,0,1,6,5,5,6,0,3,6,5,0,0,1,0, + 11,2,2,8,4,7,0,10,0,1,2,17,19,3,0,2,5,0,6,2,4,4,6,1,1,11,2,0,3,1,2,1,2,10,7,6,3,16,0,8,24,0,0,3,1,1,3,0,1,6,0,0,0,2,0,1,5,15,0,1,0,0,2,11,19, + 1,4,19,7,6,5,1,0,0,0,0,5,1,0,1,9,0,0,5,0,2,0,1,0,3,0,11,3,0,2,0,0,0,0,0,9,3,6,4,12,0,14,0,0,29,10,8,0,14,37,13,0,31,16,19,0,8,30,1,20,8,3,48, + 21,1,0,12,0,10,44,34,42,54,11,18,82,0,2,1,2,12,1,0,6,2,17,2,12,7,0,7,17,4,2,6,24,23,8,23,39,2,16,23,1,0,5,1,2,15,14,5,6,2,11,0,8,6,2,2,2,14, + 20,4,15,3,4,11,10,10,2,5,2,1,30,2,1,0,0,22,5,5,0,3,1,5,4,1,0,0,2,2,21,1,5,1,2,16,2,1,3,4,0,8,4,0,0,5,14,11,2,16,1,13,1,7,0,22,15,3,1,22,7,14, + 22,19,11,24,18,46,10,20,64,45,3,2,0,4,5,0,1,4,25,1,0,0,2,10,0,0,0,1,0,1,2,0,0,9,1,2,0,0,0,2,5,2,1,1,5,5,8,1,1,1,5,1,4,9,1,3,0,1,0,1,1,2,0,0, + 2,0,1,8,22,8,1,0,0,0,0,4,2,1,0,9,8,5,0,9,1,30,24,2,6,4,39,0,14,5,16,6,26,179,0,2,1,1,0,0,0,5,2,9,6,0,2,5,16,7,5,1,1,0,2,4,4,7,15,13,14,0,0, + 3,0,1,0,0,0,2,1,6,4,5,1,4,9,0,3,1,8,0,0,10,5,0,43,0,2,6,8,4,0,2,0,0,9,6,0,9,3,1,6,20,14,6,1,4,0,7,2,3,0,2,0,5,0,3,1,0,3,9,7,0,3,4,0,4,9,1,6,0, + 9,0,0,2,3,10,9,28,3,6,2,4,1,2,32,4,1,18,2,0,3,1,5,30,10,0,2,2,2,0,7,9,8,11,10,11,7,2,13,7,5,10,0,3,40,2,0,1,6,12,0,4,5,1,5,11,11,21,4,8,3,7, + 8,8,33,5,23,0,0,19,8,8,2,3,0,6,1,1,1,5,1,27,4,2,5,0,3,5,6,3,1,0,3,1,12,5,3,3,2,0,7,7,2,1,0,4,0,1,1,2,0,10,10,6,2,5,9,7,5,15,15,21,6,11,5,20, + 4,3,5,5,2,5,0,2,1,0,1,7,28,0,9,0,5,12,5,5,18,30,0,12,3,3,21,16,25,32,9,3,14,11,24,5,66,9,1,2,0,5,9,1,5,1,8,0,8,3,3,0,1,15,1,4,8,1,2,7,0,7,2, + 8,3,7,5,3,7,10,2,1,0,0,2,25,0,6,4,0,10,0,4,2,4,1,12,5,38,4,0,4,1,10,5,9,4,0,14,4,2,5,18,20,21,1,3,0,5,0,7,0,3,7,1,3,1,1,8,1,0,0,0,3,2,5,2,11, + 6,0,13,1,3,9,1,12,0,16,6,2,1,0,2,1,12,6,13,11,2,0,28,1,7,8,14,13,8,13,0,2,0,5,4,8,10,2,37,42,19,6,6,7,4,14,11,18,14,80,7,6,0,4,72,12,36,27, + 7,7,0,14,17,19,164,27,0,5,10,7,3,13,6,14,0,2,2,5,3,0,6,13,0,0,10,29,0,4,0,3,13,0,3,1,6,51,1,5,28,2,0,8,0,20,2,4,0,25,2,10,13,10,0,16,4,0,1,0, + 2,1,7,0,1,8,11,0,0,1,2,7,2,23,11,6,6,4,16,2,2,2,0,22,9,3,3,5,2,0,15,16,21,2,9,20,15,15,5,3,9,1,0,0,1,7,7,5,4,2,2,2,38,24,14,0,0,15,5,6,24,14, + 5,5,11,0,21,12,0,3,8,4,11,1,8,0,11,27,7,2,4,9,21,59,0,1,39,3,60,62,3,0,12,11,0,3,30,11,0,13,88,4,15,5,28,13,1,4,48,17,17,4,28,32,46,0,16,0, + 18,11,1,8,6,38,11,2,6,11,38,2,0,45,3,11,2,7,8,4,30,14,17,2,1,1,65,18,12,16,4,2,45,123,12,56,33,1,4,3,4,7,0,0,0,3,2,0,16,4,2,4,2,0,7,4,5,2,26, + 2,25,6,11,6,1,16,2,6,17,77,15,3,35,0,1,0,5,1,0,38,16,6,3,12,3,3,3,0,9,3,1,3,5,2,9,0,18,0,25,1,3,32,1,72,46,6,2,7,1,3,14,17,0,28,1,40,13,0,20, + 15,40,6,38,24,12,43,1,1,9,0,12,6,0,6,2,4,19,3,7,1,48,0,9,5,0,5,6,9,6,10,15,2,11,19,3,9,2,0,1,10,1,27,8,1,3,6,1,14,0,26,0,27,16,3,4,9,6,2,23, + 9,10,5,25,2,1,6,1,1,48,15,9,15,14,3,4,26,60,29,13,37,21,1,6,4,0,2,11,22,23,16,16,2,2,1,3,0,5,1,6,4,0,0,4,0,0,8,3,0,2,5,0,7,1,7,3,13,2,4,10, + 3,0,2,31,0,18,3,0,12,10,4,1,0,7,5,7,0,5,4,12,2,22,10,4,2,15,2,8,9,0,23,2,197,51,3,1,1,4,13,4,3,21,4,19,3,10,5,40,0,4,1,1,10,4,1,27,34,7,21, + 2,17,2,9,6,4,2,3,0,4,2,7,8,2,5,1,15,21,3,4,4,2,2,17,22,1,5,22,4,26,7,0,32,1,11,42,15,4,1,2,5,0,19,3,1,8,6,0,10,1,9,2,13,30,8,2,24,17,19,1,4, + 4,25,13,0,10,16,11,39,18,8,5,30,82,1,6,8,18,77,11,13,20,75,11,112,78,33,3,0,0,60,17,84,9,1,1,12,30,10,49,5,32,158,178,5,5,6,3,3,1,3,1,4,7,6, + 19,31,21,0,2,9,5,6,27,4,9,8,1,76,18,12,1,4,0,3,3,6,3,12,2,8,30,16,2,25,1,5,5,4,3,0,6,10,2,3,1,0,5,1,19,3,0,8,1,5,2,6,0,0,0,19,1,2,0,5,1,2,5, + 1,3,7,0,4,12,7,3,10,22,0,9,5,1,0,2,20,1,1,3,23,30,3,9,9,1,4,191,14,3,15,6,8,50,0,1,0,0,4,0,0,1,0,2,4,2,0,2,3,0,2,0,2,2,8,7,0,1,1,1,3,3,17,11, + 91,1,9,3,2,13,4,24,15,41,3,13,3,1,20,4,125,29,30,1,0,4,12,2,21,4,5,5,19,11,0,13,11,86,2,18,0,7,1,8,8,2,2,22,1,2,6,5,2,0,1,2,8,0,2,0,5,2,1,0, + 2,10,2,0,5,9,2,1,2,0,1,0,4,0,0,10,2,5,3,0,6,1,0,1,4,4,33,3,13,17,3,18,6,4,7,1,5,78,0,4,1,13,7,1,8,1,0,35,27,15,3,0,0,0,1,11,5,41,38,15,22,6, + 14,14,2,1,11,6,20,63,5,8,27,7,11,2,2,40,58,23,50,54,56,293,8,8,1,5,1,14,0,1,12,37,89,8,8,8,2,10,6,0,0,0,4,5,2,1,0,1,1,2,7,0,3,3,0,4,6,0,3,2, + 19,3,8,0,0,0,4,4,16,0,4,1,5,1,3,0,3,4,6,2,17,10,10,31,6,4,3,6,10,126,7,3,2,2,0,9,0,0,5,20,13,0,15,0,6,0,2,5,8,64,50,3,2,12,2,9,0,0,11,8,20, + 109,2,18,23,0,0,9,61,3,0,28,41,77,27,19,17,81,5,2,14,5,83,57,252,14,154,263,14,20,8,13,6,57,39,38, + }; + static int ranges_unpacked = false; + static ImWchar ranges[8 + IM_ARRAYSIZE(offsets_from_0x4E00)*2 + 1] = + { + 0x0020, 0x00FF, // Basic Latin + Latin Supplement + 0x3000, 0x30FF, // Punctuations, Hiragana, Katakana + 0x31F0, 0x31FF, // Katakana Phonetic Extensions + 0xFF00, 0xFFEF, // Half-width characters + }; + if (!ranges_unpacked) + { + // Unpack + int codepoint = 0x4e00; + ImWchar* dst = &ranges[8]; + for (int n = 0; n < IM_ARRAYSIZE(offsets_from_0x4E00); n++, dst += 2) + dst[0] = dst[1] = (ImWchar)(codepoint += (offsets_from_0x4E00[n] + 1)); + dst[0] = 0; + ranges_unpacked = true; + } + return &ranges[0]; +} + +void ImFont::BuildLookupTable() +{ + int max_codepoint = 0; + for (size_t i = 0; i != Glyphs.size(); i++) + max_codepoint = ImMax(max_codepoint, (int)Glyphs[i].Codepoint); + + IndexXAdvance.clear(); + IndexXAdvance.resize((size_t)max_codepoint + 1); + IndexLookup.clear(); + IndexLookup.resize((size_t)max_codepoint + 1); + for (size_t i = 0; i < (size_t)max_codepoint + 1; i++) + { + IndexXAdvance[i] = -1.0f; + IndexLookup[i] = -1; + } + for (size_t i = 0; i < Glyphs.size(); i++) + { + const size_t codepoint = (int)Glyphs[i].Codepoint; + IndexXAdvance[codepoint] = Glyphs[i].XAdvance; + IndexLookup[codepoint] = (int)i; + } + + // Create a glyph to handle TAB + // FIXME: Needs proper TAB handling but it needs to be contextualized (can arbitrary say that each string starts at "column 0" + if (FindGlyph((unsigned short)' ')) + { + if (Glyphs.back().Codepoint != '\t') // So we can call this function multiple times + Glyphs.resize(Glyphs.size() + 1); + ImFont::Glyph& tab_glyph = Glyphs.back(); + tab_glyph = *FindGlyph((unsigned short)' '); + tab_glyph.Codepoint = '\t'; + tab_glyph.XAdvance *= 4; + IndexXAdvance[(size_t)tab_glyph.Codepoint] = (float)tab_glyph.XAdvance; + IndexLookup[(size_t)tab_glyph.Codepoint] = (int)(Glyphs.size()-1); + } + + FallbackGlyph = NULL; + FallbackGlyph = FindGlyph(FallbackChar); + FallbackXAdvance = FallbackGlyph ? FallbackGlyph->XAdvance : 0.0f; + for (size_t i = 0; i < (size_t)max_codepoint + 1; i++) + if (IndexXAdvance[i] < 0.0f) + IndexXAdvance[i] = FallbackXAdvance; +} + +void ImFont::SetFallbackChar(ImWchar c) +{ + FallbackChar = c; + BuildLookupTable(); +} + +const ImFont::Glyph* ImFont::FindGlyph(unsigned short c) const +{ + if (c < (int)IndexLookup.size()) + { + const int i = IndexLookup[c]; + if (i != -1) + return &Glyphs[i]; + } + return FallbackGlyph; +} + +// Convert UTF-8 to 32-bits character, process single character input. +// Based on stb_from_utf8() from github.com/nothings/stb/ +// We handle UTF-8 decoding error by skipping forward. +static int ImTextCharFromUtf8(unsigned int* out_char, const char* in_text, const char* in_text_end) +{ + unsigned int c = (unsigned int)-1; + const unsigned char* str = (const unsigned char*)in_text; + if (!(*str & 0x80)) + { + c = (unsigned int)(*str++); + *out_char = c; + return 1; + } + if ((*str & 0xe0) == 0xc0) + { + *out_char = 0; + if (in_text_end && in_text_end - (const char*)str < 2) return 0; + if (*str < 0xc2) return 0; + c = (unsigned int)((*str++ & 0x1f) << 6); + if ((*str & 0xc0) != 0x80) return 0; + c += (*str++ & 0x3f); + *out_char = c; + return 2; + } + if ((*str & 0xf0) == 0xe0) + { + *out_char = 0; + if (in_text_end && in_text_end - (const char*)str < 3) return 0; + if (*str == 0xe0 && (str[1] < 0xa0 || str[1] > 0xbf)) return 0; + if (*str == 0xed && str[1] > 0x9f) return 0; // str[1] < 0x80 is checked below + c = (unsigned int)((*str++ & 0x0f) << 12); + if ((*str & 0xc0) != 0x80) return 0; + c += (unsigned int)((*str++ & 0x3f) << 6); + if ((*str & 0xc0) != 0x80) return 0; + c += (*str++ & 0x3f); + *out_char = c; + return 3; + } + if ((*str & 0xf8) == 0xf0) + { + *out_char = 0; + if (in_text_end && in_text_end - (const char*)str < 4) return 0; + if (*str > 0xf4) return 0; + if (*str == 0xf0 && (str[1] < 0x90 || str[1] > 0xbf)) return 0; + if (*str == 0xf4 && str[1] > 0x8f) return 0; // str[1] < 0x80 is checked below + c = (unsigned int)((*str++ & 0x07) << 18); + if ((*str & 0xc0) != 0x80) return 0; + c += (unsigned int)((*str++ & 0x3f) << 12); + if ((*str & 0xc0) != 0x80) return 0; + c += (unsigned int)((*str++ & 0x3f) << 6); + if ((*str & 0xc0) != 0x80) return 0; + c += (*str++ & 0x3f); + // utf-8 encodings of values used in surrogate pairs are invalid + if ((c & 0xFFFFF800) == 0xD800) return 0; + *out_char = c; + return 4; + } + *out_char = 0; + return 0; +} + +static ptrdiff_t ImTextStrFromUtf8(ImWchar* buf, size_t buf_size, const char* in_text, const char* in_text_end, const char** in_text_remaining) +{ + ImWchar* buf_out = buf; + ImWchar* buf_end = buf + buf_size; + while (buf_out < buf_end-1 && (!in_text_end || in_text < in_text_end) && *in_text) + { + unsigned int c; + in_text += ImTextCharFromUtf8(&c, in_text, in_text_end); + if (c == 0) + break; + if (c < 0x10000) // FIXME: Losing characters that don't fit in 2 bytes + *buf_out++ = (ImWchar)c; + } + *buf_out = 0; + if (in_text_remaining) + *in_text_remaining = in_text; + return buf_out - buf; +} + +static int ImTextCountCharsFromUtf8(const char* in_text, const char* in_text_end) +{ + int char_count = 0; + while ((!in_text_end || in_text < in_text_end) && *in_text) + { + unsigned int c; + in_text += ImTextCharFromUtf8(&c, in_text, in_text_end); + if (c == 0) + break; + if (c < 0x10000) + char_count++; + } + return char_count; +} + +// Based on stb_to_utf8() from github.com/nothings/stb/ +static int ImTextCharToUtf8(char* buf, size_t buf_size, unsigned int c) +{ + if (c) + { + size_t i = 0; + size_t n = buf_size; + if (c < 0x80) + { + if (i+1 > n) return 0; + buf[i++] = (char)c; + return 1; + } + else if (c < 0x800) + { + if (i+2 > n) return 0; + buf[i++] = (char)(0xc0 + (c >> 6)); + buf[i++] = (char)(0x80 + (c & 0x3f)); + return 2; + } + else if (c >= 0xdc00 && c < 0xe000) + { + return 0; + } + else if (c >= 0xd800 && c < 0xdc00) + { + if (i+4 > n) return 0; + buf[i++] = (char)(0xf0 + (c >> 18)); + buf[i++] = (char)(0x80 + ((c >> 12) & 0x3f)); + buf[i++] = (char)(0x80 + ((c >> 6) & 0x3f)); + buf[i++] = (char)(0x80 + ((c ) & 0x3f)); + return 4; + } + //else if (c < 0x10000) + { + if (i+3 > n) return 0; + buf[i++] = (char)(0xe0 + (c >> 12)); + buf[i++] = (char)(0x80 + ((c>> 6) & 0x3f)); + buf[i++] = (char)(0x80 + ((c ) & 0x3f)); + return 3; + } + } + return 0; +} + +static ptrdiff_t ImTextStrToUtf8(char* buf, size_t buf_size, const ImWchar* in_text, const ImWchar* in_text_end) +{ + char* buf_out = buf; + const char* buf_end = buf + buf_size; + while (buf_out < buf_end-1 && (!in_text_end || in_text < in_text_end) && *in_text) + { + buf_out += ImTextCharToUtf8(buf_out, (uintptr_t)(buf_end-buf_out-1), (unsigned int)*in_text); + in_text++; + } + *buf_out = 0; + return buf_out - buf; +} + +static int ImTextCountUtf8BytesFromStr(const ImWchar* in_text, const ImWchar* in_text_end) +{ + int bytes_count = 0; + while ((!in_text_end || in_text < in_text_end) && *in_text) + { + char dummy[5]; // FIXME-OPT + bytes_count += ImTextCharToUtf8(dummy, 5, (unsigned int)*in_text); + in_text++; + } + return bytes_count; +} + +const char* ImFont::CalcWordWrapPositionA(float scale, const char* text, const char* text_end, float wrap_width) const +{ + // Simple word-wrapping for English, not full-featured. Please submit failing cases! + // FIXME: Much possible improvements (don't cut things like "word !", "word!!!" but cut within "word,,,,", more sensible support for punctuations, support for Unicode punctuations, etc.) + + // For references, possible wrap point marked with ^ + // "aaa bbb, ccc,ddd. eee fff. ggg!" + // ^ ^ ^ ^ ^__ ^ ^ + + // List of hardcoded separators: .,;!?'" + + // Skip extra blanks after a line returns (that includes not counting them in width computation) + // e.g. "Hello world" --> "Hello" "World" + + // Cut words that cannot possibly fit within one line. + // e.g.: "The tropical fish" with ~5 characters worth of width --> "The tr" "opical" "fish" + + float line_width = 0.0f; + float word_width = 0.0f; + float blank_width = 0.0f; + + const char* word_end = text; + const char* prev_word_end = NULL; + bool inside_word = true; + + const char* s = text; + while (s < text_end) + { + unsigned int c = (unsigned int)*s; + const char* next_s; + if (c < 0x80) + next_s = s + 1; + else + next_s = s + ImTextCharFromUtf8(&c, s, text_end); + if (c == 0) + break; + + if (c == '\n') + { + line_width = word_width = blank_width = 0.0f; + inside_word = true; + s = next_s; + continue; + } + + const float char_width = ((size_t)c < IndexXAdvance.size()) ? IndexXAdvance[(size_t)c] * scale : FallbackXAdvance; + if (ImCharIsSpace(c)) + { + if (inside_word) + { + line_width += blank_width; + blank_width = 0.0f; + } + blank_width += char_width; + inside_word = false; + } + else + { + word_width += char_width; + if (inside_word) + { + word_end = next_s; + } + else + { + prev_word_end = word_end; + line_width += word_width + blank_width; + word_width = blank_width = 0.0f; + } + + // Allow wrapping after punctuation. + inside_word = !(c == '.' || c == ',' || c == ';' || c == '!' || c == '?' || c == '\"'); + } + + // We ignore blank width at the end of the line (they can be skipped) + if (line_width + word_width >= wrap_width) + { + // Words that cannot possibly fit within an entire line will be cut anywhere. + if (word_width < wrap_width) + s = prev_word_end ? prev_word_end : word_end; + break; + } + + s = next_s; + } + + return s; +} + +ImVec2 ImFont::CalcTextSizeA(float size, float max_width, float wrap_width, const char* text_begin, const char* text_end, const char** remaining) const +{ + if (!text_end) + text_end = text_begin + strlen(text_begin); // FIXME-OPT: Need to avoid this. + + const float scale = size / FontSize; + const float line_height = FontSize * scale; + + ImVec2 text_size = ImVec2(0,0); + float line_width = 0.0f; + + const bool word_wrap_enabled = (wrap_width > 0.0f); + const char* word_wrap_eol = NULL; + + const char* s = text_begin; + while (s < text_end) + { + if (word_wrap_enabled) + { + // Calculate how far we can render. Requires two passes on the string data but keeps the code simple and not intrusive for what's essentially an uncommon feature. + if (!word_wrap_eol) + { + word_wrap_eol = CalcWordWrapPositionA(scale, s, text_end, wrap_width - line_width); + if (word_wrap_eol == s) // Wrap_width is too small to fit anything. Force displaying 1 character to minimize the height discontinuity. + word_wrap_eol++; // +1 may not be a character start point in UTF-8 but it's ok because we use s >= word_wrap_eol below + } + + if (s >= word_wrap_eol) + { + if (text_size.x < line_width) + text_size.x = line_width; + text_size.y += line_height; + line_width = 0.0f; + word_wrap_eol = NULL; + + // Wrapping skips upcoming blanks + while (s < text_end) + { + const char c = *s; + if (ImCharIsSpace(c)) { s++; } else if (c == '\n') { s++; break; } else { break; } + } + continue; + } + } + + // Decode and advance source (handle unlikely UTF-8 decoding failure by skipping to the next byte) + const char* prev_s = s; + unsigned int c = (unsigned int)*s; + if (c < 0x80) + { + s += 1; + } + else + { + s += ImTextCharFromUtf8(&c, s, text_end); + if (c == 0) + break; + } + + if (c == '\n') + { + text_size.x = ImMax(text_size.x, line_width); + text_size.y += line_height; + line_width = 0.0f; + continue; + } + + const float char_width = ((size_t)c < IndexXAdvance.size()) ? IndexXAdvance[(size_t)c] * scale : FallbackXAdvance; + if (line_width + char_width >= max_width) + { + s = prev_s; + break; + } + + line_width += char_width; + } + + if (line_width > 0 || text_size.y == 0.0f) + { + if (text_size.x < line_width) + text_size.x = line_width; + text_size.y += line_height; + } + + if (remaining) + *remaining = s; + + return text_size; +} + +ImVec2 ImFont::CalcTextSizeW(float size, float max_width, const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining) const +{ + if (!text_end) + text_end = text_begin + ImStrlenW(text_begin); + + const float scale = size / FontSize; + const float line_height = FontSize * scale; + + ImVec2 text_size = ImVec2(0,0); + float line_width = 0.0f; + + const ImWchar* s = text_begin; + while (s < text_end) + { + const unsigned int c = (unsigned int)(*s++); + + if (c == '\n') + { + text_size.x = ImMax(text_size.x, line_width); + text_size.y += line_height; + line_width = 0.0f; + continue; + } + + const float char_width = ((size_t)c < IndexXAdvance.size()) ? IndexXAdvance[(size_t)c] * scale : FallbackXAdvance; + if (line_width + char_width >= max_width) + { + s--; + break; + } + + line_width += char_width; + } + + if (line_width > 0 || text_size.y == 0.0f) + { + if (text_size.x < line_width) + text_size.x = line_width; + text_size.y += line_height; + } + + if (remaining) + *remaining = s; + + return text_size; +} + +void ImFont::RenderText(float size, ImVec2 pos, ImU32 col, const ImVec4& clip_rect_ref, const char* text_begin, const char* text_end, ImDrawList* draw_list, float wrap_width, const ImVec2* cpu_clip_max) const +{ + if (!text_end) + text_end = text_begin + strlen(text_begin); + + const float scale = size / FontSize; + const float line_height = FontSize * scale; + + // Align to be pixel perfect + pos.x = (float)(int)pos.x + DisplayOffset.x; + pos.y = (float)(int)pos.y + DisplayOffset.y; + + const bool word_wrap_enabled = (wrap_width > 0.0f); + const char* word_wrap_eol = NULL; + + ImVec4 clip_rect = clip_rect_ref; + if (cpu_clip_max) + { + clip_rect.z = ImMin(clip_rect.z, cpu_clip_max->x); + clip_rect.w = ImMin(clip_rect.w, cpu_clip_max->y); + } + float x = pos.x; + float y = pos.y; + + ImDrawVert* out_vertices = draw_list->vtx_write; + + const char* s = text_begin; + while (s < text_end) + { + if (word_wrap_enabled) + { + // Calculate how far we can render. Requires two passes on the string data but keeps the code simple and not intrusive for what's essentially an uncommon feature. + if (!word_wrap_eol) + { + word_wrap_eol = CalcWordWrapPositionA(scale, s, text_end, wrap_width - (x - pos.x)); + if (word_wrap_eol == s) // Wrap_width is too small to fit anything. Force displaying 1 character to minimize the height discontinuity. + word_wrap_eol++; // +1 may not be a character start point in UTF-8 but it's ok because we use s >= word_wrap_eol below + } + + if (s >= word_wrap_eol) + { + x = pos.x; + y += line_height; + word_wrap_eol = NULL; + + // Wrapping skips upcoming blanks + while (s < text_end) + { + const char c = *s; + if (ImCharIsSpace(c)) { s++; } else if (c == '\n') { s++; break; } else { break; } + } + continue; + } + } + + // Decode and advance source (handle unlikely UTF-8 decoding failure by skipping to the next byte) + unsigned int c = (unsigned int)*s; + if (c < 0x80) + { + s += 1; + } + else + { + s += ImTextCharFromUtf8(&c, s, text_end); + if (c == 0) + break; + } + + if (c == '\n') + { + x = pos.x; + y += line_height; + continue; + } + + float char_width = 0.0f; + if (const Glyph* glyph = FindGlyph((unsigned short)c)) + { + char_width = glyph->XAdvance * scale; + if (c != ' ' && c != '\t') + { + // Clipping on Y is more likely + float y1 = (float)(y + glyph->YOffset * scale); + float y2 = (float)(y1 + glyph->Height * scale); + if (y1 <= clip_rect.w && y2 >= clip_rect.y) + { + float x1 = (float)(x + glyph->XOffset * scale); + float x2 = (float)(x1 + glyph->Width * scale); + if (x1 <= clip_rect.z && x2 >= clip_rect.x) + { + // Render a character + float u1 = glyph->U0; + float v1 = glyph->V0; + float u2 = glyph->U1; + float v2 = glyph->V1; + + // CPU side clipping used to fit text in their frame when the frame is too small. Only does clipping for axis aligned quad and in the "max" direction (bottom-right) + if (cpu_clip_max) + { + if (x2 > cpu_clip_max->x) + { + const float clip_tx = (cpu_clip_max->x - x1) / (x2 - x1); + x2 = cpu_clip_max->x; + u2 = u1 + clip_tx * (u2 - u1); + } + if (y2 > cpu_clip_max->y) + { + const float clip_ty = (cpu_clip_max->y - y1) / (y2 - y1); + y2 = cpu_clip_max->y; + v2 = v1 + clip_ty * (v2 - v1); + } + } + + // NB: we are not calling PrimRectUV() here because non-inlined causes too much overhead in a debug build. + out_vertices[0].pos = ImVec2(x1, y1); + out_vertices[0].uv = ImVec2(u1, v1); + out_vertices[0].col = col; + + out_vertices[1].pos = ImVec2(x2, y1); + out_vertices[1].uv = ImVec2(u2, v1); + out_vertices[1].col = col; + + out_vertices[2].pos = ImVec2(x2, y2); + out_vertices[2].uv = ImVec2(u2, v2); + out_vertices[2].col = col; + + out_vertices[3] = out_vertices[0]; + out_vertices[4] = out_vertices[2]; + + out_vertices[5].pos = ImVec2(x1, y2); + out_vertices[5].uv = ImVec2(u1, v2); + out_vertices[5].col = col; + + out_vertices += 6; + } + } + } + } + + x += char_width; + } + + draw_list->vtx_write = out_vertices; +} + +//----------------------------------------------------------------------------- +// PLATFORM DEPENDANT HELPERS +//----------------------------------------------------------------------------- + +#if defined(_MSC_VER) && !defined(IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS) + +#ifndef _WINDOWS_ +#define WIN32_LEAN_AND_MEAN +#include +#endif + +// Win32 API clipboard implementation +static const char* GetClipboardTextFn_DefaultImpl() +{ + static char* buf_local = NULL; + if (buf_local) + { + ImGui::MemFree(buf_local); + buf_local = NULL; + } + if (!OpenClipboard(NULL)) + return NULL; + HANDLE wbuf_handle = GetClipboardData(CF_UNICODETEXT); + if (wbuf_handle == NULL) + return NULL; + if (ImWchar* wbuf_global = (ImWchar*)GlobalLock(wbuf_handle)) + { + int buf_len = ImTextCountUtf8BytesFromStr(wbuf_global, NULL) + 1; + buf_local = (char*)ImGui::MemAlloc(buf_len * sizeof(char)); + ImTextStrToUtf8(buf_local, buf_len, wbuf_global, NULL); + } + GlobalUnlock(wbuf_handle); + CloseClipboard(); + return buf_local; +} + +// Win32 API clipboard implementation +static void SetClipboardTextFn_DefaultImpl(const char* text) +{ + if (!OpenClipboard(NULL)) + return; + + const int wbuf_length = ImTextCountCharsFromUtf8(text, NULL) + 1; + HGLOBAL wbuf_handle = GlobalAlloc(GMEM_MOVEABLE, (SIZE_T)wbuf_length * sizeof(ImWchar)); + if (wbuf_handle == NULL) + return; + ImWchar* wbuf_global = (ImWchar*)GlobalLock(wbuf_handle); + ImTextStrFromUtf8(wbuf_global, wbuf_length, text, NULL); + GlobalUnlock(wbuf_handle); + EmptyClipboard(); + SetClipboardData(CF_UNICODETEXT, wbuf_handle); + CloseClipboard(); +} + +#else + +// Local ImGui-only clipboard implementation, if user hasn't defined better clipboard handlers +static const char* GetClipboardTextFn_DefaultImpl() +{ + return GImGui->PrivateClipboard; +} + +// Local ImGui-only clipboard implementation, if user hasn't defined better clipboard handlers +static void SetClipboardTextFn_DefaultImpl(const char* text) +{ + ImGuiState& g = *GImGui; + if (g.PrivateClipboard) + { + ImGui::MemFree(g.PrivateClipboard); + g.PrivateClipboard = NULL; + } + const char* text_end = text + strlen(text); + g.PrivateClipboard = (char*)ImGui::MemAlloc((size_t)(text_end - text) + 1); + memcpy(g.PrivateClipboard, text, (size_t)(text_end - text)); + g.PrivateClipboard[(size_t)(text_end - text)] = 0; +} + +#endif + +#if defined(_MSC_VER) && !defined(IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS) + +#ifndef _WINDOWS_ +#define WIN32_LEAN_AND_MEAN +#include +#endif +#include +#pragma comment(lib, "imm32") + +static void ImeSetInputScreenPosFn_DefaultImpl(int x, int y) +{ + // Notify OS Input Method Editor of text input position + if (HWND hwnd = (HWND)GImGui->IO.ImeWindowHandle) + if (HIMC himc = ImmGetContext(hwnd)) + { + COMPOSITIONFORM cf; + cf.ptCurrentPos.x = x; + cf.ptCurrentPos.y = y; + cf.dwStyle = CFS_FORCE_POSITION; + ImmSetCompositionWindow(himc, &cf); + } +} + +#else + +static void ImeSetInputScreenPosFn_DefaultImpl(int, int) +{ +} + +#endif + +#ifdef IMGUI_DISABLE_TEST_WINDOWS + +void ImGui::ShowUserGuide() {} +void ImGui::ShowStyleEditor(ImGuiStyle*) {} +void ImGui::ShowTestWindow(bool*) {} +void ImGui::ShowMetricsWindow(bool*) {} + +#else + +//----------------------------------------------------------------------------- +// HELP +//----------------------------------------------------------------------------- + +void ImGui::ShowUserGuide() +{ + ImGuiState& g = *GImGui; + + ImGui::BulletText("Double-click on title bar to collapse window."); + ImGui::BulletText("Click and drag on lower right corner to resize window."); + ImGui::BulletText("Click and drag on any empty space to move window."); + ImGui::BulletText("Mouse Wheel to scroll."); + if (g.IO.FontAllowUserScaling) + ImGui::BulletText("CTRL+Mouse Wheel to zoom window contents."); + ImGui::BulletText("TAB/SHIFT+TAB to cycle through keyboard editable fields."); + ImGui::BulletText("CTRL+Click on a slider to input text."); + ImGui::BulletText( + "While editing text:\n" + "- Hold SHIFT or use mouse to select text\n" + "- CTRL+Left/Right to word jump\n" + "- CTRL+A select all\n" + "- CTRL+X,CTRL+C,CTRL+V clipboard\n" + "- CTRL+Z,CTRL+Y undo/redo\n" + "- ESCAPE to revert\n" + "- You can apply arithmetic operators +,*,/ on numerical values.\n" + " Use +- to subtract.\n"); +} + +void ImGui::ShowStyleEditor(ImGuiStyle* ref) +{ + ImGuiState& g = *GImGui; + ImGuiStyle& style = g.Style; + + const ImGuiStyle def; // Default style + + if (ImGui::Button("Revert Style")) + g.Style = ref ? *ref : def; + if (ref) + { + ImGui::SameLine(); + if (ImGui::Button("Save Style")) + *ref = g.Style; + } + + ImGui::PushItemWidth(ImGui::GetWindowWidth() * 0.55f); + + if (ImGui::TreeNode("Sizes")) + { + ImGui::SliderFloat("Alpha", &style.Alpha, 0.20f, 1.0f, "%.2f"); // Not exposing zero here so user doesn't "lose" the UI. But application code could have a toggle to switch between zero and non-zero. + ImGui::SliderFloat2("WindowPadding", (float*)&style.WindowPadding, 0.0f, 20.0f, "%.0f"); + ImGui::SliderFloat("WindowRounding", &style.WindowRounding, 0.0f, 16.0f, "%.0f"); + ImGui::SliderFloat("ChildWindowRounding", &style.ChildWindowRounding, 0.0f, 16.0f, "%.0f"); + ImGui::SliderFloat2("FramePadding", (float*)&style.FramePadding, 0.0f, 20.0f, "%.0f"); + ImGui::SliderFloat("FrameRounding", &style.FrameRounding, 0.0f, 16.0f, "%.0f"); + ImGui::SliderFloat2("ItemSpacing", (float*)&style.ItemSpacing, 0.0f, 20.0f, "%.0f"); + ImGui::SliderFloat2("ItemInnerSpacing", (float*)&style.ItemInnerSpacing, 0.0f, 20.0f, "%.0f"); + ImGui::SliderFloat2("TouchExtraPadding", (float*)&style.TouchExtraPadding, 0.0f, 10.0f, "%.0f"); + ImGui::SliderFloat("IndentSpacing", &style.IndentSpacing, 0.0f, 20.0f, "%.0f"); + ImGui::SliderFloat("ScrollBarWidth", &style.ScrollbarWidth, 1.0f, 20.0f, "%.0f"); + ImGui::SliderFloat("GrabMinSize", &style.GrabMinSize, 1.0f, 20.0f, "%.0f"); + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Colors")) + { + static int output_dest = 0; + static bool output_only_modified = false; + if (ImGui::Button("Output Colors")) + { + if (output_dest == 0) + ImGui::LogToClipboard(); + else + ImGui::LogToTTY(); + ImGui::LogText("ImGuiStyle& style = ImGui::GetStyle();" STR_NEWLINE); + for (int i = 0; i < ImGuiCol_COUNT; i++) + { + const ImVec4& col = style.Colors[i]; + const char* name = ImGui::GetStyleColName(i); + if (!output_only_modified || memcmp(&col, (ref ? &ref->Colors[i] : &def.Colors[i]), sizeof(ImVec4)) != 0) + ImGui::LogText("style.Colors[ImGuiCol_%s]%*s= ImVec4(%.2ff, %.2ff, %.2ff, %.2ff);" STR_NEWLINE, name, 22 - strlen(name), "", col.x, col.y, col.z, col.w); + } + ImGui::LogFinish(); + } + ImGui::SameLine(); ImGui::PushItemWidth(150); ImGui::Combo("##output_type", &output_dest, "To Clipboard\0To TTY"); ImGui::PopItemWidth(); + ImGui::SameLine(); ImGui::Checkbox("Only Modified Fields", &output_only_modified); + + static ImGuiColorEditMode edit_mode = ImGuiColorEditMode_RGB; + ImGui::RadioButton("RGB", &edit_mode, ImGuiColorEditMode_RGB); + ImGui::SameLine(); + ImGui::RadioButton("HSV", &edit_mode, ImGuiColorEditMode_HSV); + ImGui::SameLine(); + ImGui::RadioButton("HEX", &edit_mode, ImGuiColorEditMode_HEX); + //ImGui::Text("Tip: Click on colored square to change edit mode."); + + static ImGuiTextFilter filter; + filter.Draw("Filter colors", 200); + + ImGui::BeginChild("#colors", ImVec2(0, 300), true); + + ImGui::ColorEditMode(edit_mode); + for (int i = 0; i < ImGuiCol_COUNT; i++) + { + const char* name = ImGui::GetStyleColName(i); + if (!filter.PassFilter(name)) + continue; + ImGui::PushID(i); + ImGui::ColorEdit4(name, (float*)&style.Colors[i], true); + if (memcmp(&style.Colors[i], (ref ? &ref->Colors[i] : &def.Colors[i]), sizeof(ImVec4)) != 0) + { + ImGui::SameLine(); if (ImGui::Button("Revert")) style.Colors[i] = ref ? ref->Colors[i] : def.Colors[i]; + if (ref) { ImGui::SameLine(); if (ImGui::Button("Save")) ref->Colors[i] = style.Colors[i]; } + } + ImGui::PopID(); + } + ImGui::EndChild(); + + ImGui::TreePop(); + } + + ImGui::PopItemWidth(); +} + +//----------------------------------------------------------------------------- +// SAMPLE CODE +//----------------------------------------------------------------------------- + +static void ShowExampleAppConsole(bool* opened); +static void ShowExampleAppLongText(bool* opened); +static void ShowExampleAppAutoResize(bool* opened); +static void ShowExampleAppFixedOverlay(bool* opened); +static void ShowExampleAppManipulatingWindowTitle(bool* opened); +static void ShowExampleAppCustomRendering(bool* opened); + +// Demonstrate ImGui features (unfortunately this makes this function a little bloated!) +void ImGui::ShowTestWindow(bool* opened) +{ + // Examples apps + static bool show_app_metrics = false; + static bool show_app_console = false; + static bool show_app_long_text = false; + static bool show_app_auto_resize = false; + static bool show_app_fixed_overlay = false; + static bool show_app_custom_rendering = false; + static bool show_app_manipulating_window_title = false; + if (show_app_metrics) + ImGui::ShowMetricsWindow(&show_app_metrics); + if (show_app_console) + ShowExampleAppConsole(&show_app_console); + if (show_app_long_text) + ShowExampleAppLongText(&show_app_long_text); + if (show_app_auto_resize) + ShowExampleAppAutoResize(&show_app_auto_resize); + if (show_app_fixed_overlay) + ShowExampleAppFixedOverlay(&show_app_fixed_overlay); + if (show_app_manipulating_window_title) + ShowExampleAppManipulatingWindowTitle(&show_app_manipulating_window_title); + if (show_app_custom_rendering) + ShowExampleAppCustomRendering(&show_app_custom_rendering); + + static bool no_titlebar = false; + static bool no_border = true; + static bool no_resize = false; + static bool no_move = false; + static bool no_scrollbar = false; + static bool no_collapse = false; + static float bg_alpha = 0.65f; + + // Demonstrate the various window flags. Typically you would just use the default. + ImGuiWindowFlags window_flags = 0; + if (no_titlebar) window_flags |= ImGuiWindowFlags_NoTitleBar; + if (!no_border) window_flags |= ImGuiWindowFlags_ShowBorders; + if (no_resize) window_flags |= ImGuiWindowFlags_NoResize; + if (no_move) window_flags |= ImGuiWindowFlags_NoMove; + if (no_scrollbar) window_flags |= ImGuiWindowFlags_NoScrollbar; + if (no_collapse) window_flags |= ImGuiWindowFlags_NoCollapse; + if (!ImGui::Begin("ImGui Test", opened, ImVec2(550,680), bg_alpha, window_flags)) + { + // Early out if the window is collapsed, as an optimization. + ImGui::End(); + return; + } + + //ImGui::PushItemWidth(ImGui::GetWindowWidth() * 0.65f); // 2/3 of the space for widget and 1/3 for labels + ImGui::PushItemWidth(-140); // Right align, keep 140 pixels for labels + + ImGui::Text("ImGui says hello."); + //ImGui::Text("MousePos (%g, %g)", ImGui::GetIO().MousePos.x, ImGui::GetIO().MousePos.y); + //ImGui::Text("MouseWheel %d", ImGui::GetIO().MouseWheel); + //ImGui::Text("KeyMods %s%s%s", ImGui::GetIO().KeyCtrl ? "CTRL" : "", ImGui::GetIO().KeyShift ? "SHIFT" : "", ImGui::GetIO().KeyAlt? "ALT" : ""); + //ImGui::Text("WantCaptureMouse: %d", ImGui::GetIO().WantCaptureMouse); + //ImGui::Text("WantCaptureKeyboard: %d", ImGui::GetIO().WantCaptureKeyboard); + + ImGui::Spacing(); + if (ImGui::CollapsingHeader("Help")) + { + ImGui::TextWrapped("This window is being created by the ShowTestWindow() function. Please refer to the code for programming reference.\n\nUser Guide:"); + ImGui::ShowUserGuide(); + } + + if (ImGui::CollapsingHeader("Window options")) + { + ImGui::Checkbox("no titlebar", &no_titlebar); ImGui::SameLine(150); + ImGui::Checkbox("no border", &no_border); ImGui::SameLine(300); + ImGui::Checkbox("no resize", &no_resize); + ImGui::Checkbox("no move", &no_move); ImGui::SameLine(150); + ImGui::Checkbox("no scrollbar", &no_scrollbar); ImGui::SameLine(300); + ImGui::Checkbox("no collapse", &no_collapse); + ImGui::SliderFloat("bg alpha", &bg_alpha, 0.0f, 1.0f); + + if (ImGui::TreeNode("Style")) + { + ImGui::ShowStyleEditor(); + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Fonts")) + { + ImGui::TextWrapped("Tip: Load fonts with GetIO().Fonts->AddFontFromFileTTF()."); + for (size_t i = 0; i < ImGui::GetIO().Fonts->Fonts.size(); i++) + { + ImFont* font = ImGui::GetIO().Fonts->Fonts[i]; + ImGui::BulletText("Font %d: %.2f pixels, %d glyphs", i, font->FontSize, font->Glyphs.size()); + ImGui::TreePush((void*)i); + ImGui::PushFont(font); + ImGui::Text("The quick brown fox jumps over the lazy dog"); + ImGui::PopFont(); + if (i > 0 && ImGui::Button("Set as default")) + { + ImGui::GetIO().Fonts->Fonts[i] = ImGui::GetIO().Fonts->Fonts[0]; + ImGui::GetIO().Fonts->Fonts[0] = font; + } + ImGui::SliderFloat("font scale", &font->Scale, 0.3f, 2.0f, "%.1f"); // scale only this font + ImGui::TreePop(); + } + static float window_scale = 1.0f; + ImGui::SliderFloat("this window scale", &window_scale, 0.3f, 2.0f, "%.1f"); // scale only this window + ImGui::SliderFloat("global scale", &ImGui::GetIO().FontGlobalScale, 0.3f, 2.0f, "%.1f"); // scale everything + ImGui::SetWindowFontScale(window_scale); + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Logging")) + { + ImGui::LogButtons(); + ImGui::TreePop(); + } + } + + if (ImGui::CollapsingHeader("Widgets")) + { + static bool a=false; + if (ImGui::Button("Button")) { printf("Clicked\n"); a ^= 1; } + if (a) + { + ImGui::SameLine(); + ImGui::Text("Thanks for clicking me!"); + } + + if (ImGui::TreeNode("Tree")) + { + for (size_t i = 0; i < 5; i++) + { + if (ImGui::TreeNode((void*)i, "Child %d", i)) + { + ImGui::Text("blah blah"); + ImGui::SameLine(); + if (ImGui::SmallButton("print")) + printf("Child %d pressed", (int)i); + ImGui::TreePop(); + } + } + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Bullets")) + { + ImGui::BulletText("Bullet point 1"); + ImGui::BulletText("Bullet point 2\nOn multiple lines"); + ImGui::Bullet(); ImGui::Text("Bullet point 3 (two calls)"); + ImGui::Bullet(); ImGui::SmallButton("Button 1"); + ImGui::Bullet(); ImGui::SmallButton("Button 2"); + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Colored Text")) + { + // Using shortcut. You can use PushStyleColor()/PopStyleColor() for more flexibility. + ImGui::TextColored(ImVec4(1.0f,0.0f,1.0f,1.0f), "Pink"); + ImGui::TextColored(ImVec4(1.0f,1.0f,0.0f,1.0f), "Yellow"); + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Word Wrapping")) + { + // Using shortcut. You can use PushTextWrapPos()/PopTextWrapPos() for more flexibility. + ImGui::TextWrapped("This text should automatically wrap on the edge of the window. The current implementation for text wrapping follows simple rules that works for English and possibly other languages."); + ImGui::Spacing(); + + static float wrap_width = 200.0f; + ImGui::SliderFloat("Wrap width", &wrap_width, -20, 600, "%.0f"); + + ImGui::Text("Test paragraph 1:"); + ImGui::GetWindowDrawList()->AddRectFilled(ImGui::GetCursorScreenPos() + ImVec2(wrap_width, 0.0f), ImGui::GetCursorScreenPos() + ImVec2(wrap_width+10, ImGui::GetTextLineHeight()), 0xFFFF00FF); + ImGui::PushTextWrapPos(ImGui::GetCursorPos().x + wrap_width); + ImGui::Text("lazy dog. This paragraph is made to fit within %.0f pixels. The quick brown fox jumps over the lazy dog.", wrap_width); + ImGui::GetWindowDrawList()->AddRect(ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), 0xFF00FFFF); + ImGui::PopTextWrapPos(); + + ImGui::Text("Test paragraph 2:"); + ImGui::GetWindowDrawList()->AddRectFilled(ImGui::GetCursorScreenPos() + ImVec2(wrap_width, 0.0f), ImGui::GetCursorScreenPos() + ImVec2(wrap_width+10, ImGui::GetTextLineHeight()), 0xFFFF00FF); + ImGui::PushTextWrapPos(ImGui::GetCursorPos().x + wrap_width); + ImGui::Text("aaaaaaaa bbbbbbbb, cccccccc,dddddddd. eeeeeeee ffffffff. gggggggg!hhhhhhhh"); + ImGui::GetWindowDrawList()->AddRect(ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), 0xFF00FFFF); + ImGui::PopTextWrapPos(); + + ImGui::TreePop(); + } + + if (ImGui::TreeNode("UTF-8 Text")) + { + // UTF-8 test with Japanese characters + // (needs a suitable font, try Arial Unicode or M+ fonts http://mplus-fonts.sourceforge.jp/mplus-outline-fonts/index-en.html) + // Most compiler appears to support UTF-8 in source code (with Visual Studio you need to save your file as 'UTF-8 without signature') + // However for the sake for maximum portability here we are *not* including raw UTF-8 character in this source file, instead we encode the string with hexadecimal constants. + // In your own application be reasonable and use UTF-8 in source or retrieve the data from file system! + // Note that characters values are preserved even if the font cannot be displayed, so you can safely copy & paste garbled characters into another application. + ImGui::TextWrapped("CJK text will only appears if the font was loaded with the appropriate CJK character ranges. Call io.Font->LoadFromFileTTF() manually to load extra character ranges."); + ImGui::Text("Hiragana: \xe3\x81\x8b\xe3\x81\x8d\xe3\x81\x8f\xe3\x81\x91\xe3\x81\x93 (kakikukeko)"); + ImGui::Text("Kanjis: \xe6\x97\xa5\xe6\x9c\xac\xe8\xaa\x9e (nihongo)"); + static char buf[32] = "\xe6\x97\xa5\xe6\x9c\xac\xe8\xaa\x9e"; + ImGui::InputText("UTF-8 input", buf, IM_ARRAYSIZE(buf)); + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Clipping")) + { + static ImVec2 size(80, 20); + ImGui::TextWrapped("On a per-widget basis we are occasionally clipping text if it won't fit in its frame."); + ImGui::SliderFloat2("size", (float*)&size, 5.0f, 200.0f); + ImGui::Button("Line 1 hello\nLine 2 clip me!", size); + ImGui::TextWrapped("Otherwise we are doing coarser clipping + passing a scissor rectangle to the renderer. The system is designed to try minimizing both execution and rendering cost."); + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Images")) + { + ImGui::TextWrapped("Below we are displaying the font texture (which is the only texture we have access to in this demo). Use the 'ImTextureID' type as storage to pass pointers or identifier to your own texture data. Hover the texture for a zoomed view!"); + ImVec2 tex_screen_pos = ImGui::GetCursorScreenPos(); + float tex_w = (float)ImGui::GetIO().Fonts->TexWidth; + float tex_h = (float)ImGui::GetIO().Fonts->TexHeight; + ImTextureID tex_id = ImGui::GetIO().Fonts->TexID; + ImGui::Image(tex_id, ImVec2(tex_w, tex_h), ImVec2(0,0), ImVec2(1,1), ImColor(255,255,255,255), ImColor(255,255,255,128)); + if (ImGui::IsItemHovered()) + { + ImGui::BeginTooltip(); + float focus_sz = 32.0f; + float focus_x = ImClamp(ImGui::GetMousePos().x - tex_screen_pos.x - focus_sz * 0.5f, 0.0f, tex_w - focus_sz); + float focus_y = ImClamp(ImGui::GetMousePos().y - tex_screen_pos.y - focus_sz * 0.5f, 0.0f, tex_h - focus_sz); + ImGui::Text("Min: (%.2f, %.2f)", focus_x, focus_y); + ImGui::Text("Max: (%.2f, %.2f)", focus_x + focus_sz, focus_y + focus_sz); + ImVec2 uv0 = ImVec2((focus_x) / tex_w, (focus_y) / tex_h); + ImVec2 uv1 = ImVec2((focus_x + focus_sz) / tex_w, (focus_y + focus_sz) / tex_h); + ImGui::Image(tex_id, ImVec2(128,128), uv0, uv1, ImColor(255,255,255,255), ImColor(255,255,255,128)); + ImGui::EndTooltip(); + } + ImGui::TextWrapped("And now some textured buttons.."); + static int pressed_count = 0; + for (int i = 0; i < 8; i++) + { + if (i > 0) + ImGui::SameLine(); + ImGui::PushID(i); + int frame_padding = -1 + i; // -1 padding uses default padding + if (ImGui::ImageButton(tex_id, ImVec2(32,32), ImVec2(0,0), ImVec2(32.0f/tex_w,32/tex_h), frame_padding)) + pressed_count += 1; + ImGui::PopID(); + } + ImGui::Text("Pressed %d times.", pressed_count); + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Selectables")) + { + if (ImGui::TreeNode("Basic")) + { + static bool selected[3] = { false, true, false }; + ImGui::Selectable("1. I am selectable", &selected[0]); + ImGui::Selectable("2. I am selectable", &selected[1]); + ImGui::Text("3. I am not selectable"); + ImGui::Selectable("4. I am selectable", &selected[2]); + ImGui::TreePop(); + } + if (ImGui::TreeNode("Rendering more text into the same block")) + { + static bool selected[3] = { false, false, false }; + ImGui::Selectable("main.c", &selected[0]); ImGui::SameLine(300); ImGui::Text(" 2,345 bytes"); + ImGui::Selectable("Hello.cpp", &selected[1]); ImGui::SameLine(300); ImGui::Text("12,345 bytes"); + ImGui::Selectable("Hello.h", &selected[2]); ImGui::SameLine(300); ImGui::Text(" 2,345 bytes"); + ImGui::TreePop(); + } + if (ImGui::TreeNode("Grid")) + { + static bool selected[16] = { true, false, false, false, false, true, false, false, false, false, true, false, false, false, false, true }; + for (int i = 0; i < 16; i++) + { + ImGui::PushID(i); + if (ImGui::Selectable("Me", &selected[i], ImVec2(50,50))) + { + int x = i % 4, y = i / 4; + if (x > 0) selected[i - 1] ^= 1; + if (x < 3) selected[i + 1] ^= 1; + if (y > 0) selected[i - 4] ^= 1; + if (y < 3) selected[i + 4] ^= 1; + } + if ((i % 4) < 3) ImGui::SameLine(); + ImGui::PopID(); + } + ImGui::TreePop(); + } + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Popup")) + { + static bool popup_open = false; + static int selected_fish = -1; + const char* fishes[] = { "Bream", "Haddock", "Mackerel", "Pollock", "Tilefish" }; + if (ImGui::Button("Select..")) + popup_open = true; + ImGui::SameLine(); + ImGui::Text(selected_fish == -1 ? "" : fishes[selected_fish]); + if (popup_open) + { + ImGui::BeginPopup(&popup_open); + ImGui::Text("Aquarium"); + ImGui::Separator(); + for (int i = 0; i < IM_ARRAYSIZE(fishes); i++) + { + if (ImGui::Selectable(fishes[i], false)) + { + selected_fish = i; + popup_open = false; + } + } + ImGui::EndPopup(); + } + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Filtered Text Input")) + { + static char buf1[64] = ""; ImGui::InputText("default", buf1, 64); + static char buf2[64] = ""; ImGui::InputText("decimal", buf2, 64, ImGuiInputTextFlags_CharsDecimal); + static char buf3[64] = ""; ImGui::InputText("hexadecimal", buf3, 64, ImGuiInputTextFlags_CharsHexadecimal | ImGuiInputTextFlags_CharsUppercase); + static char buf4[64] = ""; ImGui::InputText("uppercase", buf4, 64, ImGuiInputTextFlags_CharsUppercase); + static char buf5[64] = ""; ImGui::InputText("no blank", buf5, 64, ImGuiInputTextFlags_CharsNoBlank); + struct TextFilters { static int FilterImGuiLetters(ImGuiTextEditCallbackData* data) { if (data->EventChar < 256 && strchr("imgui", (char)data->EventChar)) return 0; return 1; } }; + static char buf6[64] = ""; ImGui::InputText("\"imgui\" letters", buf6, 64, ImGuiInputTextFlags_CallbackCharFilter, TextFilters::FilterImGuiLetters); + ImGui::TreePop(); + } + + static bool check = true; + ImGui::Checkbox("checkbox", &check); + + static int e = 0; + ImGui::RadioButton("radio a", &e, 0); ImGui::SameLine(); + ImGui::RadioButton("radio b", &e, 1); ImGui::SameLine(); + ImGui::RadioButton("radio c", &e, 2); + + // Color buttons, demonstrate using PushID() to add unique identifier in the ID stack, and changing style. + for (int i = 0; i < 7; i++) + { + if (i > 0) ImGui::SameLine(); + ImGui::PushID(i); + ImGui::PushStyleColor(ImGuiCol_Button, ImColor::HSV(i/7.0f, 0.6f, 0.6f)); + ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImColor::HSV(i/7.0f, 0.7f, 0.7f)); + ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImColor::HSV(i/7.0f, 0.8f, 0.8f)); + ImGui::Button("Click"); + ImGui::PopStyleColor(3); + ImGui::PopID(); + } + + ImGui::Text("Hover over me"); + if (ImGui::IsItemHovered()) + ImGui::SetTooltip("I am a tooltip"); + + ImGui::SameLine(); + ImGui::Text("- or me"); + if (ImGui::IsItemHovered()) + { + ImGui::BeginTooltip(); + ImGui::Text("I am a fancy tooltip"); + static float arr[] = { 0.6f, 0.1f, 1.0f, 0.5f, 0.92f, 0.1f, 0.2f }; + ImGui::PlotLines("Curve", arr, IM_ARRAYSIZE(arr)); + ImGui::EndTooltip(); + } + + // Testing IMGUI_ONCE_UPON_A_FRAME macro + //for (int i = 0; i < 5; i++) + //{ + // IMGUI_ONCE_UPON_A_FRAME + // { + // ImGui::Text("This will be displayed only once."); + // } + //} + + ImGui::Separator(); + + ImGui::LabelText("label", "Value"); + + static int item = 1; + ImGui::Combo("combo", &item, "aaaa\0bbbb\0cccc\0dddd\0eeee\0\0"); + + const char* items[] = { "AAAA", "BBBB", "CCCC", "DDDD", "EEEE", "FFFF", "GGGG", "HHHH", "IIII", "JJJJ", "KKKK" }; + static int item2 = -1; + ImGui::Combo("combo scroll", &item2, items, IM_ARRAYSIZE(items)); + + { + static char str0[128] = "Hello, world!"; + static int i0=123; + static float f0=0.001f; + ImGui::InputText("input text", str0, IM_ARRAYSIZE(str0)); + ImGui::InputInt("input int", &i0); + ImGui::InputFloat("input float", &f0, 0.01f, 1.0f); + + static float vec4a[4] = { 0.10f, 0.20f, 0.30f, 0.44f }; + ImGui::InputFloat3("input float3", vec4a); + } + + { + static int i1=50; + static int i2=42; + ImGui::DragInt("drag int", &i1, 1); + ImGui::SameLine(); + ImGui::TextColored(ImColor(170,170,170,255), "(?)"); + if (ImGui::IsItemHovered()) + ImGui::SetTooltip("Click and drag to edit value.\nHold SHIFT/ALT for faster/slower edit.\nDouble-click or CTRL+click to input text"); + + ImGui::DragInt("drag int 0..100", &i2, 1, 0, 100, "%.0f%%"); + + static float f1=1.00f; + static float f2=0.0067f; + ImGui::DragFloat("drag float", &f1, 1.0f); + ImGui::DragFloat("drag small float", &f2, 0.0001f, 0.0f, 0.0f, "%.06f ns"); + } + + { + static int i1=0; + //static int i2=42; + ImGui::SliderInt("slider int 0..3", &i1, 0, 3); + //ImGui::SliderInt("slider int -100..100", &i2, -100, 100); + + static float f1=0.123f; + static float f2=0.0f; + ImGui::SliderFloat("slider float", &f1, 0.0f, 1.0f, "ratio = %.3f"); + ImGui::SliderFloat("slider log float", &f2, -10.0f, 10.0f, "%.4f", 3.0f); + static float angle = 0.0f; + ImGui::SliderAngle("slider angle", &angle); + } + + static float col1[3] = { 1.0f,0.0f,0.2f }; + static float col2[4] = { 0.4f,0.7f,0.0f,0.5f }; + ImGui::ColorEdit3("color 1", col1); + ImGui::ColorEdit4("color 2", col2); + + const char* listbox_items[] = { "Apple", "Banana", "Cherry", "Kiwi", "Mango", "Orange", "Pineapple", "Strawberry", "Watermelon" }; + static int listbox_item_current = 1; + ImGui::ListBox("listbox\n(single select)", &listbox_item_current, listbox_items, IM_ARRAYSIZE(listbox_items), 4); + + //static int listbox_item_current2 = 2; + //ImGui::PushItemWidth(-1); + //ImGui::ListBox("##listbox2", &listbox_item_current2, listbox_items, IM_ARRAYSIZE(listbox_items), 4); + //ImGui::PopItemWidth(); + + if (ImGui::TreeNode("Multi-component Widgets")) + { + ImGui::Unindent(); + + static float vec4f[4] = { 0.10f, 0.20f, 0.30f, 0.44f }; + static int vec4i[4] = { 1, 5, 100, 255 }; + + ImGui::InputFloat2("input float2", vec4f); + ImGui::DragFloat2("drag float2", vec4f, 0.01f, 0.0f, 1.0f); + ImGui::SliderFloat2("slider float2", vec4f, 0.0f, 1.0f); + ImGui::DragInt2("drag int2", vec4i, 1, 0, 255); + ImGui::InputInt2("input int2", vec4i); + ImGui::SliderInt2("slider int2", vec4i, 0, 255); + + ImGui::InputFloat3("input float3", vec4f); + ImGui::DragFloat3("drag float3", vec4f, 0.01f, 0.0f, 1.0f); + ImGui::SliderFloat3("slider float3", vec4f, 0.0f, 1.0f); + ImGui::DragInt3("drag int3", vec4i, 1, 0, 255); + ImGui::InputInt3("input int3", vec4i); + ImGui::SliderInt3("slider int3", vec4i, 0, 255); + + ImGui::InputFloat4("input float4", vec4f); + ImGui::DragFloat4("drag float4", vec4f, 0.01f, 0.0f, 1.0f); + ImGui::SliderFloat4("slider float4", vec4f, 0.0f, 1.0f); + ImGui::InputInt4("input int4", vec4i); + ImGui::DragInt4("drag int4", vec4i, 1, 0, 255); + ImGui::SliderInt4("slider int4", vec4i, 0, 255); + + ImGui::Indent(); + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Vertical Sliders")) + { + ImGui::Unindent(); + const float spacing = 4; + ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(spacing, spacing)); + + static int int_value = 0; + ImGui::VSliderInt("##int", ImVec2(18,160), &int_value, 0, 5); + ImGui::SameLine(); + + static float values[7] = { 0.0f, 0.60f, 0.35f, 0.9f, 0.70f, 0.20f, 0.0f }; + ImGui::PushID("set1"); + for (int i = 0; i < 7; i++) + { + if (i > 0) ImGui::SameLine(); + ImGui::PushID(i); + ImGui::PushStyleColor(ImGuiCol_FrameBg, ImColor::HSV(i/7.0f, 0.5f, 0.5f)); + ImGui::PushStyleColor(ImGuiCol_FrameBgHovered, ImColor::HSV(i/7.0f, 0.6f, 0.5f)); + ImGui::PushStyleColor(ImGuiCol_FrameBgActive, ImColor::HSV(i/7.0f, 0.7f, 0.5f)); + ImGui::PushStyleColor(ImGuiCol_SliderGrab, ImColor::HSV(i/7.0f, 0.9f, 0.9f)); + ImGui::VSliderFloat("##v", ImVec2(18,160), &values[i], 0.0f, 1.0f, ""); + if (ImGui::IsItemActive() || ImGui::IsItemHovered()) + ImGui::SetTooltip("%.3f", values[i]); + ImGui::PopStyleColor(4); + ImGui::PopID(); + } + ImGui::PopID(); + + ImGui::SameLine(); + ImGui::PushID("set2"); + static float values2[4] = { 0.20f, 0.80f, 0.40f, 0.25f }; + const int rows = 3; + const ImVec2 small_slider_size(18, (160.0f-(rows-1)*spacing)/rows); + for (int nx = 0; nx < 4; nx++) + { + if (nx > 0) ImGui::SameLine(); + ImGui::BeginGroup(); + for (int ny = 0; ny < rows; ny++) + { + ImGui::PushID(nx*rows+ny); + ImGui::VSliderFloat("##v", small_slider_size, &values2[nx], 0.0f, 1.0f, ""); + if (ImGui::IsItemActive() || ImGui::IsItemHovered()) + ImGui::SetTooltip("%.3f", values2[nx]); + ImGui::PopID(); + } + ImGui::EndGroup(); + } + ImGui::PopID(); + + ImGui::SameLine(); + ImGui::PushID("set3"); + for (int i = 0; i < 4; i++) + { + if (i > 0) ImGui::SameLine(); + ImGui::PushID(i); + ImGui::PushStyleVar(ImGuiStyleVar_GrabMinSize, 40); + ImGui::VSliderFloat("##v", ImVec2(40,160), &values[i], 0.0f, 1.0f, "%.2f"); + ImGui::PopStyleVar(); + ImGui::PopID(); + } + ImGui::PopID(); + + ImGui::Indent(); + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Dragging")) + { + // You can use ImGui::GetItemActiveDragDelta() to query for the dragged amount on any widget. + static ImVec2 value_raw(0.0f, 0.0f); + static ImVec2 value_with_lock_threshold(0.0f, 0.0f); + ImGui::Button("Drag Me"); + if (ImGui::IsItemActive()) + { + value_raw = ImGui::GetMouseDragDelta(0, 0.0f); + value_with_lock_threshold = ImGui::GetMouseDragDelta(0); + //ImGui::SetTooltip("Delta: %.1f, %.1f", value.x, value.y); + + // Draw a line between the button and the mouse cursor + ImDrawList* draw_list = ImGui::GetWindowDrawList(); + draw_list->PushClipRectFullScreen(); + draw_list->AddLine(ImGui::CalcItemRectClosestPoint(ImGui::GetIO().MousePos, true, -2.0f), ImGui::GetIO().MousePos, ImColor(ImGui::GetStyle().Colors[ImGuiCol_Button]), 4.0f); + draw_list->PopClipRect(); + } + ImGui::SameLine(); ImGui::Text("Raw (%.1f, %.1f), WithLockThresold (%.1f, %.1f)", value_raw.x, value_raw.y, value_with_lock_threshold.x, value_with_lock_threshold.y); + ImGui::TreePop(); + } + } + + if (ImGui::CollapsingHeader("Graphs widgets")) + { + static float arr[] = { 0.6f, 0.1f, 1.0f, 0.5f, 0.92f, 0.1f, 0.2f }; + ImGui::PlotLines("Frame Times", arr, IM_ARRAYSIZE(arr)); + + static bool pause; + static ImVector values; if (values.empty()) { values.resize(90); memset(&values.front(), 0, values.size()*sizeof(float)); } + static size_t values_offset = 0; + if (!pause) + { + // create dummy data at fixed 60 hz rate + static float refresh_time = -1.0f; + if (ImGui::GetTime() > refresh_time + 1.0f/60.0f) + { + refresh_time = ImGui::GetTime(); + static float phase = 0.0f; + values[values_offset] = cosf(phase); + values_offset = (values_offset+1)%values.size(); + phase += 0.10f*values_offset; + } + } + ImGui::PlotLines("##Graph", &values.front(), (int)values.size(), (int)values_offset, "avg 0.0", -1.0f, 1.0f, ImVec2(0,80)); + ImGui::SameLine(0, (int)ImGui::GetStyle().ItemInnerSpacing.x); + ImGui::BeginGroup(); + ImGui::Text("Graph"); + ImGui::Checkbox("pause", &pause); + ImGui::EndGroup(); + ImGui::PlotHistogram("Histogram", arr, IM_ARRAYSIZE(arr), 0, NULL, 0.0f, 1.0f, ImVec2(0,80)); + } + + if (ImGui::CollapsingHeader("Layout")) + { + if (ImGui::TreeNode("Widgets Alignment")) + { + static float f = 0.0f; + ImGui::Text("Fixed: 100 pixels"); + ImGui::PushItemWidth(100); + ImGui::InputFloat("float##1", &f); + ImGui::PopItemWidth(); + + ImGui::Text("Proportional: 50%% of window width"); + ImGui::PushItemWidth(ImGui::GetWindowWidth() * 0.5f); + ImGui::InputFloat("float##2", &f); + ImGui::PopItemWidth(); + + ImGui::Text("Right-aligned: Leave 100 pixels for label"); + ImGui::PushItemWidth(-100); + ImGui::InputFloat("float##3", &f); + ImGui::PopItemWidth(); + + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Basic Horizontal Layout")) + { + ImGui::TextWrapped("(Use ImGui::SameLine() to keep adding items to the right of the preceeding item)"); + + // Text + ImGui::Text("Two items: Hello"); + ImGui::SameLine(); + ImGui::TextColored(ImVec4(1,1,0,1), "World"); + + // Adjust spacing + ImGui::Text("More spacing: Hello"); + ImGui::SameLine(0, 20); + ImGui::TextColored(ImVec4(1,1,0,1), "World"); + + // Button + ImGui::AlignFirstTextHeightToWidgets(); + ImGui::Text("Normal buttons"); ImGui::SameLine(); + ImGui::Button("Banana"); ImGui::SameLine(); + ImGui::Button("Apple"); ImGui::SameLine(); + ImGui::Button("Corniflower"); + + // Button + ImGui::Text("Small buttons"); ImGui::SameLine(); + ImGui::SmallButton("Like this one"); ImGui::SameLine(); + ImGui::Text("can fit within a text block."); + + // Aligned to arbitrary position. Easy/cheap column. + ImGui::Text("Aligned"); + ImGui::SameLine(150); ImGui::Text("x=150"); + ImGui::SameLine(300); ImGui::Text("x=300"); + ImGui::Text("Aligned"); + ImGui::SameLine(150); ImGui::SmallButton("x=150"); + ImGui::SameLine(300); ImGui::SmallButton("x=300"); + + // Checkbox + static bool c1=false,c2=false,c3=false,c4=false; + ImGui::Checkbox("My", &c1); ImGui::SameLine(); + ImGui::Checkbox("Tailor", &c2); ImGui::SameLine(); + ImGui::Checkbox("Is", &c3); ImGui::SameLine(); + ImGui::Checkbox("Rich", &c4); + + // Various + static float f0=1.0f, f1=2.0f, f2=3.0f; + ImGui::PushItemWidth(80); + const char* items[] = { "AAAA", "BBBB", "CCCC", "DDDD" }; + static int item = -1; + ImGui::Combo("Combo", &item, items, IM_ARRAYSIZE(items)); ImGui::SameLine(); + ImGui::SliderFloat("X", &f0, 0.0f,5.0f); ImGui::SameLine(); + ImGui::SliderFloat("Y", &f1, 0.0f,5.0f); ImGui::SameLine(); + ImGui::SliderFloat("Z", &f2, 0.0f,5.0f); + ImGui::PopItemWidth(); + + ImGui::PushItemWidth(80); + ImGui::Text("Lists:"); + static int selection[4] = { 0, 1, 2, 3 }; + for (int i = 0; i < 4; i++) + { + if (i > 0) ImGui::SameLine(); + ImGui::PushID(i); + ImGui::ListBox("", &selection[i], items, IM_ARRAYSIZE(items)); + ImGui::PopID(); + //if (ImGui::IsItemHovered()) ImGui::SetTooltip("ListBox %d hovered", i); + } + ImGui::PopItemWidth(); + + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Groups")) + { + ImGui::TextWrapped("(Using ImGui::BeginGroup()/EndGroup() to layout items)"); + + ImVec2 size; + ImGui::BeginGroup(); + { + ImGui::BeginGroup(); + ImGui::Button("AAA"); + ImGui::SameLine(); + ImGui::Button("BBB"); + ImGui::SameLine(); + ImGui::BeginGroup(); + ImGui::Button("CCC"); + ImGui::Button("DDD"); + ImGui::EndGroup(); + if (ImGui::IsItemHovered()) + ImGui::SetTooltip("Group hovered"); + ImGui::SameLine(); + ImGui::Button("EEE"); + ImGui::EndGroup(); + + // Capture the group size and create widgets using the same size + size = ImGui::GetItemRectSize(); + const float values[5] = { 0.5f, 0.20f, 0.80f, 0.60f, 0.25f }; + ImGui::PlotHistogram("##values", values, IM_ARRAYSIZE(values), 0, NULL, 0.0f, 1.0f, size); + } + ImGui::Button("ACTION", ImVec2((size.x - ImGui::GetStyle().ItemSpacing.x)*0.5f,size.y)); + ImGui::SameLine(); + ImGui::Button("REACTION", ImVec2((size.x - ImGui::GetStyle().ItemSpacing.x)*0.5f,size.y)); + ImGui::EndGroup(); + ImGui::SameLine(); + + ImGui::Button("LEVERAGE\nBUZZWORD", size); + ImGui::SameLine(); + + ImGui::ListBoxHeader("List", size); + ImGui::Selectable("Selected", true); + ImGui::Selectable("Not Selected", false); + ImGui::ListBoxFooter(); + + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Text Baseline Alignment")) + { + ImGui::TextWrapped("(This is testing the vertical alignment that occurs on text to keep it at the same baseline as widgets. Lines only composed of text or \"small\" widgets fit in less vertical spaces than lines with normal widgets)"); + + ImGui::Text("One\nTwo\nThree"); ImGui::SameLine(); + ImGui::Text("Hello\nWorld"); ImGui::SameLine(); + ImGui::Text("Banana"); + + ImGui::Text("Banana"); ImGui::SameLine(); + ImGui::Text("Hello\nWorld"); ImGui::SameLine(); + ImGui::Text("One\nTwo\nThree"); + + ImGui::Button("HOP"); ImGui::SameLine(); + ImGui::Text("Banana"); ImGui::SameLine(); + ImGui::Text("Hello\nWorld"); ImGui::SameLine(); + ImGui::Text("Banana"); + + ImGui::Button("HOP"); ImGui::SameLine(); + ImGui::Text("Hello\nWorld"); ImGui::SameLine(); + ImGui::Text("Banana"); + + ImGui::Button("TEST"); ImGui::SameLine(); + ImGui::Text("TEST"); ImGui::SameLine(); + ImGui::SmallButton("TEST"); + + ImGui::AlignFirstTextHeightToWidgets(); // If your line starts with text, call this to align it to upcoming widgets. + ImGui::Text("Text aligned to Widget"); ImGui::SameLine(); + ImGui::Button("Widget"); ImGui::SameLine(); + ImGui::Text("Widget"); ImGui::SameLine(); + ImGui::SmallButton("Widget"); + + ImGui::TreePop(); + } + } + + if (ImGui::CollapsingHeader("Child regions")) + { + ImGui::Text("Without border"); + static int line = 50; + bool goto_line = ImGui::Button("Goto"); + ImGui::SameLine(); + ImGui::PushItemWidth(100); + goto_line |= ImGui::InputInt("##Line", &line, 0, 0, ImGuiInputTextFlags_EnterReturnsTrue); + ImGui::PopItemWidth(); + ImGui::BeginChild("Sub1", ImVec2(ImGui::GetWindowWidth() * 0.5f,300)); + for (int i = 0; i < 100; i++) + { + ImGui::Text("%04d: scrollable region", i); + if (goto_line && line == i) + ImGui::SetScrollPosHere(); + } + if (goto_line && line >= 100) + ImGui::SetScrollPosHere(); + ImGui::EndChild(); + + ImGui::SameLine(); + + ImGui::PushStyleVar(ImGuiStyleVar_ChildWindowRounding, 5.0f); + ImGui::BeginChild("Sub2", ImVec2(0,300), true); + ImGui::Text("With border"); + ImGui::Columns(2); + for (int i = 0; i < 100; i++) + { + if (i == 50) + ImGui::NextColumn(); + char buf[32]; + ImFormatString(buf, IM_ARRAYSIZE(buf), "%08x", i*5731); + ImGui::Button(buf); + } + ImGui::EndChild(); + ImGui::PopStyleVar(); + } + + if (ImGui::CollapsingHeader("Columns")) + { + // Basic columns + ImGui::Text("Basic:"); + ImGui::Columns(4, "mycolumns"); + ImGui::Separator(); + ImGui::Text("ID"); ImGui::NextColumn(); + ImGui::Text("Name"); ImGui::NextColumn(); + ImGui::Text("Path"); ImGui::NextColumn(); + ImGui::Text("Flags"); ImGui::NextColumn(); + ImGui::Separator(); + const char* names[3] = { "Robert", "Stephanie", "C64" }; + const char* paths[3] = { "/path/robert", "/path/stephanie", "/path/computer" }; + for (int i = 0; i < 3; i++) + { + ImGui::Text("%04d", i); ImGui::NextColumn(); + ImGui::Text(names[i]); ImGui::NextColumn(); + ImGui::Text(paths[i]); ImGui::NextColumn(); + ImGui::Text("...."); ImGui::NextColumn(); + } + ImGui::Columns(1); + + ImGui::Separator(); + ImGui::Spacing(); + + // Scrolling columns + /* + ImGui::Text("Scrolling:"); + ImGui::BeginChild("##header", ImVec2(0, ImGui::GetTextLineHeightWithSpacing()+ImGui::GetStyle().ItemSpacing.y)); + ImGui::Columns(3); + ImGui::Text("ID"); ImGui::NextColumn(); + ImGui::Text("Name"); ImGui::NextColumn(); + ImGui::Text("Path"); ImGui::NextColumn(); + ImGui::Columns(1); + ImGui::Separator(); + ImGui::EndChild(); + ImGui::BeginChild("##scrollingregion", ImVec2(0, 60)); + ImGui::Columns(3); + for (int i = 0; i < 10; i++) + { + ImGui::Text("%04d", i); ImGui::NextColumn(); + ImGui::Text("Foobar"); ImGui::NextColumn(); + ImGui::Text("/path/foobar/%04d/", i); ImGui::NextColumn(); + } + ImGui::Columns(1); + ImGui::EndChild(); + + ImGui::Separator(); + ImGui::Spacing(); + */ + + // Create multiple items in a same cell before switching to next column + ImGui::Text("Mixed items:"); + ImGui::Columns(3, "mixed"); + ImGui::Separator(); + + static int e = 0; + ImGui::Text("Hello"); + ImGui::Button("Banana"); + ImGui::RadioButton("radio a", &e, 0); + ImGui::NextColumn(); + + ImGui::Text("ImGui"); + ImGui::Button("Apple"); + ImGui::RadioButton("radio b", &e, 1); + static float foo = 1.0f; + ImGui::InputFloat("red", &foo, 0.05f, 0, 3); + ImGui::Text("An extra line here."); + ImGui::NextColumn(); + + ImGui::Text("World!"); + ImGui::Button("Corniflower"); + ImGui::RadioButton("radio c", &e, 2); + static float bar = 1.0f; + ImGui::InputFloat("blue", &bar, 0.05f, 0, 3); + ImGui::NextColumn(); + + if (ImGui::CollapsingHeader("Category A")) ImGui::Text("Blah blah blah"); ImGui::NextColumn(); + if (ImGui::CollapsingHeader("Category B")) ImGui::Text("Blah blah blah"); ImGui::NextColumn(); + if (ImGui::CollapsingHeader("Category C")) ImGui::Text("Blah blah blah"); ImGui::NextColumn(); + ImGui::Columns(1); + + ImGui::Separator(); + ImGui::Spacing(); + + // Tree items + ImGui::Text("Tree items:"); + ImGui::Columns(2, "tree items"); + ImGui::Separator(); + if (ImGui::TreeNode("Hello")) { ImGui::BulletText("World"); ImGui::TreePop(); } ImGui::NextColumn(); + if (ImGui::TreeNode("Bonjour")) { ImGui::BulletText("Monde"); ImGui::TreePop(); } ImGui::NextColumn(); + ImGui::Columns(1); + + ImGui::Separator(); + ImGui::Spacing(); + + // Word-wrapping + ImGui::Text("Word-wrapping:"); + ImGui::Columns(2, "word-wrapping"); + ImGui::Separator(); + ImGui::TextWrapped("The quick brown fox jumps over the lazy dog."); + ImGui::Text("Hello Left"); + ImGui::NextColumn(); + ImGui::TextWrapped("The quick brown fox jumps over the lazy dog."); + ImGui::Text("Hello Right"); + ImGui::Columns(1); + + ImGui::Separator(); + ImGui::Spacing(); + + if (ImGui::TreeNode("Inside a tree..")) + { + if (ImGui::TreeNode("node 1 (with borders)")) + { + ImGui::Columns(4); + for (int i = 0; i < 8; i++) + { + ImGui::Text("%c%c%c", 'a'+i, 'a'+i, 'a'+i); + ImGui::NextColumn(); + } + ImGui::Columns(1); + ImGui::TreePop(); + } + if (ImGui::TreeNode("node 2 (without borders)")) + { + ImGui::Columns(4, NULL, false); + for (int i = 0; i < 8; i++) + { + ImGui::Text("%c%c%c", 'a'+i, 'a'+i, 'a'+i); + ImGui::NextColumn(); + } + ImGui::Columns(1); + ImGui::TreePop(); + } + ImGui::TreePop(); + } + } + + if (ImGui::CollapsingHeader("Filtering")) + { + static ImGuiTextFilter filter; + ImGui::Text("Filter usage:\n" + " \"\" display all lines\n" + " \"xxx\" display lines containing \"xxx\"\n" + " \"xxx,yyy\" display lines containing \"xxx\" or \"yyy\"\n" + " \"-xxx\" hide lines containing \"xxx\""); + filter.Draw(); + const char* lines[] = { "aaa1.c", "bbb1.c", "ccc1.c", "aaa2.cpp", "bbb2.cpp", "ccc2.cpp", "abc.h", "hello, world" }; + for (size_t i = 0; i < IM_ARRAYSIZE(lines); i++) + if (filter.PassFilter(lines[i])) + ImGui::BulletText("%s", lines[i]); + } + + if (ImGui::CollapsingHeader("Keyboard, Mouse & Focus")) + { + if (ImGui::TreeNode("Tabbing")) + { + ImGui::Text("Use TAB/SHIFT+TAB to cycle thru keyboard editable fields."); + static char buf[32] = "dummy"; + ImGui::InputText("1", buf, IM_ARRAYSIZE(buf)); + ImGui::InputText("2", buf, IM_ARRAYSIZE(buf)); + ImGui::InputText("3", buf, IM_ARRAYSIZE(buf)); + ImGui::PushAllowKeyboardFocus(false); + ImGui::InputText("4 (tab skip)", buf, IM_ARRAYSIZE(buf)); + //ImGui::SameLine(); ImGui::Text("(?)"); if (ImGui::IsHovered()) ImGui::SetTooltip("Use ImGui::PushAllowKeyboardFocus(bool)\nto disable tabbing through certain widgets."); + ImGui::PopAllowKeyboardFocus(); + ImGui::InputText("5", buf, IM_ARRAYSIZE(buf)); + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Focus from code")) + { + bool focus_1 = ImGui::Button("Focus on 1"); ImGui::SameLine(); + bool focus_2 = ImGui::Button("Focus on 2"); ImGui::SameLine(); + bool focus_3 = ImGui::Button("Focus on 3"); + int has_focus = 0; + static char buf[128] = "click on a button to set focus"; + + if (focus_1) ImGui::SetKeyboardFocusHere(); + ImGui::InputText("1", buf, IM_ARRAYSIZE(buf)); + if (ImGui::IsItemActive()) has_focus = 1; + + if (focus_2) ImGui::SetKeyboardFocusHere(); + ImGui::InputText("2", buf, IM_ARRAYSIZE(buf)); + if (ImGui::IsItemActive()) has_focus = 2; + + ImGui::PushAllowKeyboardFocus(false); + if (focus_3) ImGui::SetKeyboardFocusHere(); + ImGui::InputText("3 (tab skip)", buf, IM_ARRAYSIZE(buf)); + if (ImGui::IsItemActive()) has_focus = 3; + ImGui::PopAllowKeyboardFocus(); + if (has_focus) + ImGui::Text("Item with focus: %d", has_focus); + else + ImGui::Text("Item with focus: "); + ImGui::TextWrapped("Cursor & selection are preserved when refocusing last used item in code."); + ImGui::TreePop(); + } + + if (ImGui::TreeNode("Mouse cursors")) + { + ImGui::TextWrapped("(Your application can render a different mouse cursor based on what ImGui::GetMouseCursor() returns. You can also set io.MouseDrawCursor to ask ImGui to render the cursor for you in software)"); + ImGui::Checkbox("io.MouseDrawCursor", &ImGui::GetIO().MouseDrawCursor); + ImGui::Text("Hover to see mouse cursors:"); + for (int i = 0; i < ImGuiMouseCursor_Count_; i++) + { + char label[32]; + sprintf(label, "Mouse cursor %d", i); + ImGui::Bullet(); ImGui::Selectable(label, false); + if (ImGui::IsItemHovered()) + ImGui::SetMouseCursor(i); + } + ImGui::TreePop(); + } + } + + if (ImGui::CollapsingHeader("App Examples")) + { + ImGui::Checkbox("Metrics", &show_app_metrics); + ImGui::Checkbox("Console", &show_app_console); + ImGui::Checkbox("Long text display", &show_app_long_text); + ImGui::Checkbox("Auto-resizing window", &show_app_auto_resize); + ImGui::Checkbox("Simple overlay", &show_app_fixed_overlay); + ImGui::Checkbox("Manipulating window title", &show_app_manipulating_window_title); + ImGui::Checkbox("Custom rendering", &show_app_custom_rendering); + } + + ImGui::End(); +} + +void ImGui::ShowMetricsWindow(bool* opened) +{ + if (ImGui::Begin("ImGui Metrics", opened)) + { + ImGui::Text("ImGui %s", ImGui::GetVersion()); + ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate); + ImGui::Text("%d vertices", ImGui::GetIO().MetricsRenderVertices); + ImGui::Separator(); + + struct Funcs + { + static void NodeDrawList(ImDrawList* draw_list, const char* label) + { + bool node_opened = ImGui::TreeNode(draw_list, "%s: %d vtx, %d cmds", label, draw_list->vtx_buffer.size(), draw_list->commands.size()); + if (draw_list == ImGui::GetWindowDrawList()) + { + ImGui::SameLine(); + ImGui::TextColored(ImColor(255,100,100), "CURRENTLY APPENDING"); // Can't display stats for active draw list! (we don't have the data double-buffered) + } + if (!node_opened) + return; + for (const ImDrawCmd* pcmd = draw_list->commands.begin(); pcmd < draw_list->commands.end(); pcmd++) + if (pcmd->user_callback) + ImGui::BulletText("Callback %p, user_data %p", pcmd->user_callback, pcmd->user_callback_data); + else + ImGui::BulletText("Draw %d vtx, tex = %p", pcmd->vtx_count, pcmd->texture_id); + ImGui::TreePop(); + } + + static void NodeWindows(ImVector& windows, const char* label) + { + if (!ImGui::TreeNode(label, "%s (%d)", label, (int)windows.size())) + return; + for (int i = 0; i < (int)windows.size(); i++) + Funcs::NodeWindow(windows[i], "Window"); + ImGui::TreePop(); + } + + static void NodeWindow(ImGuiWindow* window, const char* label) + { + if (!ImGui::TreeNode(window, "%s '%s', %d @ 0x%p", label, window->Name, window->Visible, window)) + return; + NodeDrawList(window->DrawList, "DrawList"); + if (window->RootWindow != window) NodeWindow(window->RootWindow, "RootWindow"); + if (window->DC.ChildWindows.size() > 0) NodeWindows(window->DC.ChildWindows, "ChildWindows"); + ImGui::TreePop(); + } + }; + + ImGuiState& g = *GImGui; // Access private state + g.DisableHideTextAfterDoubleHash++; // Not exposed (yet). Disable processing that hides text after '##' markers. + Funcs::NodeWindows(g.Windows, "Windows"); + if (ImGui::TreeNode("DrawList", "Active DrawLists (%d)", (int)g.RenderDrawLists[0].size())) + { + for (int i = 0; i < (int)g.RenderDrawLists[0].size(); i++) + Funcs::NodeDrawList(g.RenderDrawLists[0][i], "DrawList"); + ImGui::TreePop(); + } + g.DisableHideTextAfterDoubleHash--; + } + ImGui::End(); +} + +static void ShowExampleAppAutoResize(bool* opened) +{ + if (!ImGui::Begin("Example: Auto-Resizing Window", opened, ImGuiWindowFlags_AlwaysAutoResize)) + { + ImGui::End(); + return; + } + + static int lines = 10; + ImGui::TextWrapped("Window will resize every-frame to the size of its content. Note that you don't want to query the window size to output your content because that would create a feedback loop."); + ImGui::SliderInt("Number of lines", &lines, 1, 20); + for (int i = 0; i < lines; i++) + ImGui::Text("%*sThis is line %d", i*4, "", i); // Pad with space to extend size horizontally + + ImGui::End(); +} + +static void ShowExampleAppFixedOverlay(bool* opened) +{ + ImGui::SetNextWindowPos(ImVec2(10,10)); + if (!ImGui::Begin("Example: Fixed Overlay", opened, ImVec2(0,0), 0.3f, ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoSavedSettings)) + { + ImGui::End(); + return; + } + + ImGui::Text("Simple overlay\non the top-left side of the screen."); + ImGui::Separator(); + ImGui::Text("Mouse Position: (%.1f,%.1f)", ImGui::GetIO().MousePos.x, ImGui::GetIO().MousePos.y); + + ImGui::End(); +} + +static void ShowExampleAppManipulatingWindowTitle(bool* opened) +{ + (void)opened; + + // By default, Windows are uniquely identified by their title. + // You can use the "##" and "###" markers to manipulate the display/ID. Read FAQ at the top of this file! + + // Using "##" to display same title but have unique identifier. + ImGui::SetNextWindowPos(ImVec2(100,100), ImGuiSetCond_FirstUseEver); + ImGui::Begin("Same title as another window##1"); + ImGui::Text("This is window 1.\nMy title is the same as window 2, but my identifier is unique."); + ImGui::End(); + + ImGui::SetNextWindowPos(ImVec2(100,200), ImGuiSetCond_FirstUseEver); + ImGui::Begin("Same title as another window##2"); + ImGui::Text("This is window 2.\nMy title is the same as window 1, but my identifier is unique."); + ImGui::End(); + + // Using "###" to display a changing title but keep a static identifier "AnimatedTitle" + char buf[128]; + ImFormatString(buf, IM_ARRAYSIZE(buf), "Animated title %c %d###AnimatedTitle", "|/-\\"[(int)(ImGui::GetTime()/0.25f)&3], rand()); + ImGui::SetNextWindowPos(ImVec2(100,300), ImGuiSetCond_FirstUseEver); + ImGui::Begin(buf); + ImGui::Text("This window has a changing title."); + ImGui::End(); +} + +static void ShowExampleAppCustomRendering(bool* opened) +{ + ImGui::SetNextWindowSize(ImVec2(300,350), ImGuiSetCond_FirstUseEver); + if (!ImGui::Begin("Example: Custom Rendering", opened)) + { + ImGui::End(); + return; + } + + // Tip: If you do a lot of custom rendering, you probably want to use your own geometrical types and benefit of overloaded operators, etc. + // Define IM_VEC2_CLASS_EXTRA in imconfig.h to create implicit conversions between your types and ImVec2/ImVec4. + // ImGui defines overloaded operators but they are internal to imgui.cpp and not exposed outside (to avoid messing with your types) + // In this example we aren't using the operators. + + static ImVector points; + static bool adding_line = false; + if (ImGui::Button("Clear")) points.clear(); + if (points.size() >= 2) { ImGui::SameLine(); if (ImGui::Button("Undo")) { points.pop_back(); points.pop_back(); } } + ImGui::Text("Left-click and drag to add lines"); + ImGui::Text("Right-click to undo"); + + ImDrawList* draw_list = ImGui::GetWindowDrawList(); + + // Here we are using InvisibleButton() as a convenience to 1) advance the cursor and 2) allows us to use IsItemHovered() + // However you can draw directly and poll mouse/keyboard by yourself. You can manipulate the cursor using GetCursorPos() and SetCursorPos(). + // If you only use the ImDrawList API, you can notify the owner window of its extends by using SetCursorPos(max). + ImVec2 canvas_pos = ImGui::GetCursorScreenPos(); // ImDrawList API uses screen coordinates! + ImVec2 canvas_size = ImVec2(ImMax(50.0f,ImGui::GetWindowContentRegionMax().x-ImGui::GetCursorPos().x), ImMax(50.0f,ImGui::GetWindowContentRegionMax().y-ImGui::GetCursorPos().y)); // Resize canvas what's available + draw_list->AddRect(canvas_pos, ImVec2(canvas_pos.x + canvas_size.x, canvas_pos.y + canvas_size.y), 0xFFFFFFFF); + bool adding_preview = false; + ImGui::InvisibleButton("canvas", canvas_size); + if (ImGui::IsItemHovered()) + { + ImVec2 mouse_pos_in_canvas = ImVec2(ImGui::GetIO().MousePos.x - canvas_pos.x, ImGui::GetIO().MousePos.y - canvas_pos.y); + if (!adding_line && ImGui::GetIO().MouseClicked[0]) + { + points.push_back(mouse_pos_in_canvas); + adding_line = true; + } + if (adding_line) + { + adding_preview = true; + points.push_back(mouse_pos_in_canvas); + if (!ImGui::GetIO().MouseDown[0]) + adding_line = adding_preview = false; + } + if (ImGui::GetIO().MouseClicked[1] && !points.empty()) + { + adding_line = false; + points.pop_back(); + points.pop_back(); + } + } + draw_list->PushClipRect(ImVec4(canvas_pos.x, canvas_pos.y, canvas_pos.x+canvas_size.x, canvas_pos.y+canvas_size.y)); // clip lines within the canvas (if we resize it, etc.) + for (int i = 0; i < (int)points.size() - 1; i += 2) + draw_list->AddLine(ImVec2(canvas_pos.x + points[i].x, canvas_pos.y + points[i].y), ImVec2(canvas_pos.x + points[i+1].x, canvas_pos.y + points[i+1].y), 0xFF00FFFF); + draw_list->PopClipRect(); + if (adding_preview) + points.pop_back(); + ImGui::End(); +} + +struct ExampleAppConsole +{ + char InputBuf[256]; + ImVector Items; + bool ScrollToBottom; + ImVector History; + int HistoryPos; // -1: new line, 0..History.size()-1 browsing history. + ImVector Commands; + + ExampleAppConsole() + { + ClearLog(); + HistoryPos = -1; + Commands.push_back("HELP"); + Commands.push_back("HISTORY"); + Commands.push_back("CLEAR"); + Commands.push_back("CLASSIFY"); // "classify" is here to provide an example of "C"+[tab] completing to "CL" and displaying matches. + } + ~ExampleAppConsole() + { + ClearLog(); + for (size_t i = 0; i < Items.size(); i++) + ImGui::MemFree(History[i]); + } + + void ClearLog() + { + for (size_t i = 0; i < Items.size(); i++) + ImGui::MemFree(Items[i]); + Items.clear(); + ScrollToBottom = true; + } + + void AddLog(const char* fmt, ...) + { + char buf[1024]; + va_list args; + va_start(args, fmt); + ImFormatStringV(buf, IM_ARRAYSIZE(buf), fmt, args); + va_end(args); + Items.push_back(ImStrdup(buf)); + ScrollToBottom = true; + } + + void Run(const char* title, bool* opened) + { + ImGui::SetNextWindowSize(ImVec2(520,600), ImGuiSetCond_FirstUseEver); + if (!ImGui::Begin(title, opened)) + { + ImGui::End(); + return; + } + + ImGui::TextWrapped("This example implements a console with basic coloring, completion and history. A more elaborate implementation may want to store entries along with extra data such as timestamp, emitter, etc."); + ImGui::TextWrapped("Enter 'HELP' for help, press TAB to use text completion."); + + // TODO: display from bottom + // TODO: clip manually + + if (ImGui::SmallButton("Add Dummy Text")) { AddLog("%d some text", Items.size()); AddLog("some more text"); AddLog("display very important message here!"); } ImGui::SameLine(); + if (ImGui::SmallButton("Add Dummy Error")) AddLog("[error] something went wrong"); ImGui::SameLine(); + if (ImGui::SmallButton("Clear")) ClearLog(); + //static float t = 0.0f; if (ImGui::GetTime() - t > 0.02f) { t = ImGui::GetTime(); AddLog("Spam %f", t); } + + ImGui::Separator(); + + ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(0,0)); + static ImGuiTextFilter filter; + filter.Draw("Filter (\"incl,-excl\") (\"error\")", 180); + //if (ImGui::IsItemHovered()) ImGui::SetKeyboardFocusHere(-1); // Auto focus on hover + ImGui::PopStyleVar(); + ImGui::Separator(); + + // Display every line as a separate entry so we can change their color or add custom widgets. If you only want raw text you can use ImGui::TextUnformatted(log.begin(), log.end()); + // NB- if you have thousands of entries this approach may be too inefficient. You can seek and display only the lines that are visible - CalcListClipping() is a helper to compute this information. + // If your items are of variable size you may want to implement code similar to what CalcListClipping() does. Or split your data into fixed height items to allow random-seeking into your list. + ImGui::BeginChild("ScrollingRegion", ImVec2(0,-ImGui::GetTextLineHeightWithSpacing()*2)); + ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(4,1)); // Tighten spacing + for (size_t i = 0; i < Items.size(); i++) + { + const char* item = Items[i]; + if (!filter.PassFilter(item)) + continue; + ImVec4 col(1,1,1,1); // A better implement may store a type per-item. For the sample let's just parse the text. + if (strstr(item, "[error]")) col = ImVec4(1.0f,0.4f,0.4f,1.0f); + else if (strncmp(item, "# ", 2) == 0) col = ImVec4(1.0f,0.8f,0.6f,1.0f); + ImGui::PushStyleColor(ImGuiCol_Text, col); + ImGui::TextUnformatted(item); + ImGui::PopStyleColor(); + } + if (ScrollToBottom) + ImGui::SetScrollPosHere(); + ScrollToBottom = false; + ImGui::PopStyleVar(); + ImGui::EndChild(); + ImGui::Separator(); + + // Command-line + if (ImGui::InputText("Input", InputBuf, IM_ARRAYSIZE(InputBuf), ImGuiInputTextFlags_EnterReturnsTrue|ImGuiInputTextFlags_CallbackCompletion|ImGuiInputTextFlags_CallbackHistory, &TextEditCallbackStub, (void*)this)) + { + char* input_end = InputBuf+strlen(InputBuf); + while (input_end > InputBuf && input_end[-1] == ' ') input_end--; *input_end = 0; + if (InputBuf[0]) + ExecCommand(InputBuf); + strcpy(InputBuf, ""); + } + + // Demonstrate keeping auto focus on the input box + if (ImGui::IsItemHovered() || (ImGui::IsRootWindowOrAnyChildFocused() && !ImGui::IsAnyItemActive() && !ImGui::IsMouseClicked(0))) + ImGui::SetKeyboardFocusHere(-1); // Auto focus + + ImGui::End(); + } + + void ExecCommand(const char* command_line) + { + AddLog("# %s\n", command_line); + + // Insert into history. First find match and delete it so it can be pushed to the back. This isn't trying to be smart or optimal. + HistoryPos = -1; + for (int i = (int)History.size()-1; i >= 0; i--) + if (ImStricmp(History[i], command_line) == 0) + { + ImGui::MemFree(History[i]); + History.erase(History.begin() + i); + break; + } + History.push_back(ImStrdup(command_line)); + + // Process command + if (ImStricmp(command_line, "CLEAR") == 0) + { + ClearLog(); + } + else if (ImStricmp(command_line, "HELP") == 0) + { + AddLog("Commands:"); + for (size_t i = 0; i < Commands.size(); i++) + AddLog("- %s", Commands[i]); + } + else if (ImStricmp(command_line, "HISTORY") == 0) + { + for (size_t i = History.size() >= 10 ? History.size() - 10 : 0; i < History.size(); i++) + AddLog("%3d: %s\n", i, History[i]); + } + else + { + AddLog("Unknown command: '%s'\n", command_line); + } + } + + static int TextEditCallbackStub(ImGuiTextEditCallbackData* data) + { + ExampleAppConsole* console = (ExampleAppConsole*)data->UserData; + return console->TextEditCallback(data); + } + + int TextEditCallback(ImGuiTextEditCallbackData* data) + { + //AddLog("cursor: %d, selection: %d-%d", data->CursorPos, data->SelectionStart, data->SelectionEnd); + switch (data->EventFlag) + { + case ImGuiInputTextFlags_CallbackCompletion: + { + // Example of TEXT COMPLETION + + // Locate beginning of current word + const char* word_end = data->Buf + data->CursorPos; + const char* word_start = word_end; + while (word_start > data->Buf) + { + const char c = word_start[-1]; + if (ImCharIsSpace(c) || c == ',' || c == ';') + break; + word_start--; + } + + // Build a list of candidates + ImVector candidates; + for (size_t i = 0; i < Commands.size(); i++) + if (ImStrnicmp(Commands[i], word_start, (int)(word_end-word_start)) == 0) + candidates.push_back(Commands[i]); + + if (candidates.size() == 0) + { + // No match + AddLog("No match for \"%.*s\"!\n", word_end-word_start, word_start); + } + else if (candidates.size() == 1) + { + // Single match. Delete the beginning of the word and replace it entirely so we've got nice casing + data->DeleteChars((int)(word_start-data->Buf), (int)(word_end-word_start)); + data->InsertChars(data->CursorPos, candidates[0]); + data->InsertChars(data->CursorPos, " "); + } + else + { + // Multiple matches. Complete as much as we can, so inputing "C" will complete to "CL" and display "CLEAR" and "CLASSIFY" + int match_len = (int)(word_end - word_start); + for (;;) + { + int c = 0; + bool all_candidates_matches = true; + for (size_t i = 0; i < candidates.size() && all_candidates_matches; i++) + if (i == 0) + c = toupper(candidates[i][match_len]); + else if (c != toupper(candidates[i][match_len])) + all_candidates_matches = false; + if (!all_candidates_matches) + break; + match_len++; + } + + if (match_len > 0) + { + data->DeleteChars((int)(word_start - data->Buf), (int)(word_end-word_start)); + data->InsertChars(data->CursorPos, candidates[0], candidates[0] + match_len); + } + + // List matches + AddLog("Possible matches:\n"); + for (size_t i = 0; i < candidates.size(); i++) + AddLog("- %s\n", candidates[i]); + } + + break; + } + case ImGuiInputTextFlags_CallbackHistory: + { + // Example of HISTORY + const int prev_history_pos = HistoryPos; + if (data->EventKey == ImGuiKey_UpArrow) + { + if (HistoryPos == -1) + HistoryPos = (int)(History.size() - 1); + else if (HistoryPos > 0) + HistoryPos--; + } + else if (data->EventKey == ImGuiKey_DownArrow) + { + if (HistoryPos != -1) + if (++HistoryPos >= (int)History.size()) + HistoryPos = -1; + } + + // A better implementation would preserve the data on the current input line along with cursor position. + if (prev_history_pos != HistoryPos) + { + ImFormatString(data->Buf, data->BufSize, "%s", (HistoryPos >= 0) ? History[HistoryPos] : ""); + data->BufDirty = true; + data->CursorPos = data->SelectionStart = data->SelectionEnd = (int)strlen(data->Buf); + } + } + } + return 0; + } +}; + +static void ShowExampleAppConsole(bool* opened) +{ + static ExampleAppConsole console; + console.Run("Example: Console", opened); +} + +static void ShowExampleAppLongText(bool* opened) +{ + ImGui::SetNextWindowSize(ImVec2(520,600), ImGuiSetCond_FirstUseEver); + if (!ImGui::Begin("Example: Long text display", opened)) + { + ImGui::End(); + return; + } + + static int test_type = 0; + static ImGuiTextBuffer log; + static int lines = 0; + ImGui::Text("Printing unusually long amount of text."); + ImGui::Combo("Test type", &test_type, "Single call to TextUnformatted()\0Multiple calls to Text(), clipped manually\0Multiple calls to Text(), not clipped"); + ImGui::Text("Buffer contents: %d lines, %d bytes", lines, log.size()); + if (ImGui::Button("Clear")) { log.clear(); lines = 0; } + ImGui::SameLine(); + if (ImGui::Button("Add 1000 lines")) + { + for (int i = 0; i < 1000; i++) + log.append("%i The quick brown fox jumps over the lazy dog\n", lines+i); + lines += 1000; + } + ImGui::BeginChild("Log"); + switch (test_type) + { + case 0: + // Single call to TextUnformatted() with a big buffer + ImGui::TextUnformatted(log.begin(), log.end()); + break; + case 1: + // Multiple calls to Text(), manually coarsely clipped - demonstrate how to use the CalcListClipping() helper. + ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(0,0)); + int display_start, display_end; + ImGui::CalcListClipping(lines, ImGui::GetTextLineHeight(), &display_start, &display_end); + ImGui::SetCursorPosY(ImGui::GetCursorPosY() + (display_start) * ImGui::GetTextLineHeight()); + for (int i = display_start; i < display_end; i++) + ImGui::Text("%i The quick brown fox jumps over the lazy dog\n", i); + ImGui::SetCursorPosY(ImGui::GetCursorPosY() + (lines - display_end) * ImGui::GetTextLineHeight()); + ImGui::PopStyleVar(); + break; + case 2: + // Multiple calls to Text(), not clipped + ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(0,0)); + for (int i = 0; i < lines; i++) + ImGui::Text("%i The quick brown fox jumps over the lazy dog\n", i); + ImGui::PopStyleVar(); + break; + } + ImGui::EndChild(); + ImGui::End(); +} + +// End of Sample code +#endif + +//----------------------------------------------------------------------------- +// FONT DATA +//----------------------------------------------------------------------------- +// Compressed with stb_compress() then converted to a C array. +// Use the program in extra_fonts/binary_to_compressed_c.cpp to create the array from a TTF file. +// Decompressor from stb.h (public domain) by Sean Barrett https://github.com/nothings/stb/blob/master/stb.h +//----------------------------------------------------------------------------- + +static unsigned int stb_decompress_length(unsigned char *input) +{ + return (input[8] << 24) + (input[9] << 16) + (input[10] << 8) + input[11]; +} + +static unsigned char *stb__barrier, *stb__barrier2, *stb__barrier3, *stb__barrier4; +static unsigned char *stb__dout; +static void stb__match(unsigned char *data, unsigned int length) +{ + // INVERSE of memmove... write each byte before copying the next... + IM_ASSERT (stb__dout + length <= stb__barrier); + if (stb__dout + length > stb__barrier) { stb__dout += length; return; } + if (data < stb__barrier4) { stb__dout = stb__barrier+1; return; } + while (length--) *stb__dout++ = *data++; +} + +static void stb__lit(unsigned char *data, unsigned int length) +{ + IM_ASSERT (stb__dout + length <= stb__barrier); + if (stb__dout + length > stb__barrier) { stb__dout += length; return; } + if (data < stb__barrier2) { stb__dout = stb__barrier+1; return; } + memcpy(stb__dout, data, length); + stb__dout += length; +} + +#define stb__in2(x) ((i[x] << 8) + i[(x)+1]) +#define stb__in3(x) ((i[x] << 16) + stb__in2((x)+1)) +#define stb__in4(x) ((i[x] << 24) + stb__in3((x)+1)) + +static unsigned char *stb_decompress_token(unsigned char *i) +{ + if (*i >= 0x20) { // use fewer if's for cases that expand small + if (*i >= 0x80) stb__match(stb__dout-i[1]-1, i[0] - 0x80 + 1), i += 2; + else if (*i >= 0x40) stb__match(stb__dout-(stb__in2(0) - 0x4000 + 1), i[2]+1), i += 3; + else /* *i >= 0x20 */ stb__lit(i+1, i[0] - 0x20 + 1), i += 1 + (i[0] - 0x20 + 1); + } else { // more ifs for cases that expand large, since overhead is amortized + if (*i >= 0x18) stb__match(stb__dout-(stb__in3(0) - 0x180000 + 1), i[3]+1), i += 4; + else if (*i >= 0x10) stb__match(stb__dout-(stb__in3(0) - 0x100000 + 1), stb__in2(3)+1), i += 5; + else if (*i >= 0x08) stb__lit(i+2, stb__in2(0) - 0x0800 + 1), i += 2 + (stb__in2(0) - 0x0800 + 1); + else if (*i == 0x07) stb__lit(i+3, stb__in2(1) + 1), i += 3 + (stb__in2(1) + 1); + else if (*i == 0x06) stb__match(stb__dout-(stb__in3(1)+1), i[4]+1), i += 5; + else if (*i == 0x04) stb__match(stb__dout-(stb__in3(1)+1), stb__in2(4)+1), i += 6; + } + return i; +} + +static unsigned int stb_adler32(unsigned int adler32, unsigned char *buffer, unsigned int buflen) +{ + const unsigned long ADLER_MOD = 65521; + unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16; + unsigned long blocklen, i; + + blocklen = buflen % 5552; + while (buflen) { + for (i=0; i + 7 < blocklen; i += 8) { + s1 += buffer[0], s2 += s1; + s1 += buffer[1], s2 += s1; + s1 += buffer[2], s2 += s1; + s1 += buffer[3], s2 += s1; + s1 += buffer[4], s2 += s1; + s1 += buffer[5], s2 += s1; + s1 += buffer[6], s2 += s1; + s1 += buffer[7], s2 += s1; + + buffer += 8; + } + + for (; i < blocklen; ++i) + s1 += *buffer++, s2 += s1; + + s1 %= ADLER_MOD, s2 %= ADLER_MOD; + buflen -= blocklen; + blocklen = 5552; + } + return (unsigned int)(s2 << 16) + (unsigned int)s1; +} + +static unsigned int stb_decompress(unsigned char *output, unsigned char *i, unsigned int length) +{ + unsigned int olen; + if (stb__in4(0) != 0x57bC0000) return 0; + if (stb__in4(4) != 0) return 0; // error! stream is > 4GB + olen = stb_decompress_length(i); + stb__barrier2 = i; + stb__barrier3 = i+length; + stb__barrier = output + olen; + stb__barrier4 = output; + i += 16; + + stb__dout = output; + for (;;) { + unsigned char *old_i = i; + i = stb_decompress_token(i); + if (i == old_i) { + if (*i == 0x05 && i[1] == 0xfa) { + IM_ASSERT(stb__dout == output + olen); + if (stb__dout != output + olen) return 0; + if (stb_adler32(1, output, olen) != (unsigned int) stb__in4(2)) + return 0; + return olen; + } else { + IM_ASSERT(0); /* NOTREACHED */ + return 0; + } + } + IM_ASSERT(stb__dout <= output + olen); + if (stb__dout > output + olen) + return 0; + } +} + +//----------------------------------------------------------------------------- +// ProggyClean.ttf +// Copyright (c) 2004, 2005 Tristan Grimmer +// MIT license (see License.txt in http://www.upperbounds.net/download/ProggyClean.ttf.zip) +// Download and more information at http://upperbounds.net +//----------------------------------------------------------------------------- +static const unsigned int proggy_clean_ttf_compressed_size = 9583; +static const unsigned int proggy_clean_ttf_compressed_data[9584/4] = +{ + 0x0000bc57, 0x00000000, 0xf8a00000, 0x00000400, 0x00010037, 0x000c0000, 0x00030080, 0x2f534f40, 0x74eb8832, 0x01000090, 0x2c158248, 0x616d634e, + 0x23120270, 0x03000075, 0x241382a0, 0x74766352, 0x82178220, 0xfc042102, 0x02380482, 0x66796c67, 0x5689af12, 0x04070000, 0x80920000, 0x64616568, + 0xd36691d7, 0xcc201b82, 0x36210382, 0x27108268, 0xc3014208, 0x04010000, 0x243b0f82, 0x78746d68, 0x807e008a, 0x98010000, 0x06020000, 0x61636f6c, + 0xd8b0738c, 0x82050000, 0x0402291e, 0x7078616d, 0xda00ae01, 0x28201f82, 0x202c1082, 0x656d616e, 0x96bb5925, 0x84990000, 0x9e2c1382, 0x74736f70, + 0xef83aca6, 0x249b0000, 0xd22c3382, 0x70657270, 0x12010269, 0xf4040000, 0x08202f82, 0x012ecb84, 0x553c0000, 0x0f5fd5e9, 0x0300f53c, 0x00830008, + 0x7767b722, 0x002b3f82, 0xa692bd00, 0xfe0000d7, 0x83800380, 0x21f1826f, 0x00850002, 0x41820120, 0x40fec026, 0x80030000, 0x05821083, 0x07830120, + 0x0221038a, 0x24118200, 0x90000101, 0x82798200, 0x00022617, 0x00400008, 0x2009820a, 0x82098276, 0x82002006, 0x9001213b, 0x0223c883, 0x828a02bc, + 0x858f2010, 0xc5012507, 0x00023200, 0x04210083, 0x91058309, 0x6c412b03, 0x40007374, 0xac200000, 0x00830008, 0x01000523, 0x834d8380, 0x80032103, + 0x012101bf, 0x23b88280, 0x00800000, 0x0b830382, 0x07820120, 0x83800021, 0x88012001, 0x84002009, 0x2005870f, 0x870d8301, 0x2023901b, 0x83199501, + 0x82002015, 0x84802000, 0x84238267, 0x88002027, 0x8561882d, 0x21058211, 0x13880000, 0x01800022, 0x05850d85, 0x0f828020, 0x03208384, 0x03200582, + 0x47901b84, 0x1b850020, 0x1f821d82, 0x3f831d88, 0x3f410383, 0x84058405, 0x210982cd, 0x09830000, 0x03207789, 0xf38a1384, 0x01203782, 0x13872384, + 0x0b88c983, 0x0d898f84, 0x00202982, 0x23900383, 0x87008021, 0x83df8301, 0x86118d03, 0x863f880d, 0x8f35880f, 0x2160820f, 0x04830300, 0x1c220382, + 0x05820100, 0x4c000022, 0x09831182, 0x04001c24, 0x11823000, 0x0800082e, 0x00000200, 0xff007f00, 0xffffac20, 0x00220982, 0x09848100, 0xdf216682, + 0x843586d5, 0x06012116, 0x04400684, 0xa58120d7, 0x00b127d8, 0x01b88d01, 0x2d8685ff, 0xc100c621, 0xf4be0801, 0x9e011c01, 0x88021402, 0x1403fc02, + 0x9c035803, 0x1404de03, 0x50043204, 0xa2046204, 0x66051605, 0x1206bc05, 0xd6067406, 0x7e073807, 0x4e08ec07, 0x96086c08, 0x1009d008, 0x88094a09, + 0x800a160a, 0x560b040b, 0x2e0cc80b, 0xea0c820c, 0xa40d5e0d, 0x500eea0d, 0x280f960e, 0x1210b00f, 0xe0107410, 0xb6115211, 0x6e120412, 0x4c13c412, + 0xf613ac13, 0xae145814, 0x4015ea14, 0xa6158015, 0x1216b815, 0xc6167e16, 0x8e173417, 0x5618e017, 0xee18ba18, 0x96193619, 0x481ad419, 0xf01a9c1a, + 0xc81b5c1b, 0x4c1c041c, 0xea1c961c, 0x921d2a1d, 0x401ed21d, 0xe01e8e1e, 0x761f241f, 0xa61fa61f, 0x01821020, 0x8a202e34, 0xc820b220, 0x74211421, + 0xee219821, 0x86226222, 0x01820c23, 0x83238021, 0x23983c01, 0x24d823b0, 0x244a2400, 0x24902468, 0x250625ae, 0x25822560, 0x26f825f8, 0x82aa2658, + 0xd8be0801, 0x9a274027, 0x68280a28, 0x0e29a828, 0xb8292029, 0x362af829, 0x602a602a, 0x2a2b022b, 0xac2b5e2b, 0x202ce62b, 0x9a2c342c, 0x5c2d282d, + 0xaa2d782d, 0x262ee82d, 0x262fa62e, 0xf42fb62f, 0xc8305e30, 0xb4313e31, 0x9e321e32, 0x82331e33, 0x5c34ee33, 0x3a35ce34, 0xd4358635, 0x72362636, + 0x7637e636, 0x3a38d837, 0x1239a638, 0xae397439, 0x9a3a2e3a, 0x7c3b063b, 0x3a3ce83b, 0x223d963c, 0xec3d863d, 0xc63e563e, 0x9a3f2a3f, 0x6a401240, + 0x3641d040, 0x0842a241, 0x7a424042, 0xf042b842, 0xcc436243, 0x8a442a44, 0x5845ee44, 0xe245b645, 0xb4465446, 0x7a471447, 0x5448da47, 0x4049c648, + 0x15462400, 0x034d0808, 0x0b000700, 0x13000f00, 0x1b001700, 0x23001f00, 0x2b002700, 0x33002f00, 0x3b003700, 0x43003f00, 0x4b004700, 0x53004f00, + 0x5b005700, 0x63005f00, 0x6b006700, 0x73006f00, 0x7b007700, 0x83007f00, 0x8b008700, 0x00008f00, 0x15333511, 0x20039631, 0x20178205, 0xd3038221, + 0x20739707, 0x25008580, 0x028080fc, 0x05be8080, 0x04204a85, 0x05ce0685, 0x0107002a, 0x02000080, 0x00000400, 0x250d8b41, 0x33350100, 0x03920715, + 0x13820320, 0x858d0120, 0x0e8d0320, 0xff260d83, 0x00808000, 0x54820106, 0x04800223, 0x845b8c80, 0x41332059, 0x078b068f, 0x82000121, 0x82fe2039, + 0x84802003, 0x83042004, 0x23598a0e, 0x00180000, 0x03210082, 0x42ab9080, 0x73942137, 0x2013bb41, 0x8f978205, 0x2027a39b, 0x20b68801, 0x84b286fd, + 0x91c88407, 0x41032011, 0x11a51130, 0x15000027, 0x80ff8000, 0x11af4103, 0x841b0341, 0x8bd983fd, 0x9be99bc9, 0x8343831b, 0x21f1821f, 0xb58300ff, + 0x0f84e889, 0xf78a0484, 0x8000ff22, 0x0020eeb3, 0x14200082, 0x2130ef41, 0xeb431300, 0x4133200a, 0xd7410ecb, 0x9a07200b, 0x2027871b, 0x21238221, + 0xe7828080, 0xe784fd20, 0xe8848020, 0xfe808022, 0x08880d85, 0xba41fd20, 0x82248205, 0x85eab02a, 0x008022e7, 0x2cd74200, 0x44010021, 0xd34406eb, + 0x44312013, 0xcf8b0eef, 0x0d422f8b, 0x82332007, 0x0001212f, 0x8023cf82, 0x83000180, 0x820583de, 0x830682d4, 0x820020d4, 0x82dc850a, 0x20e282e9, + 0xb2ff85fe, 0x010327e9, 0x02000380, 0x0f440400, 0x0c634407, 0x68825982, 0x85048021, 0x260a825d, 0x010b0000, 0x4400ff00, 0x2746103f, 0x08d74209, + 0x4d440720, 0x0eaf4406, 0xc3441d20, 0x23078406, 0xff800002, 0x04845b83, 0x8d05b241, 0x1781436f, 0x6b8c87a5, 0x1521878e, 0x06474505, 0x01210783, + 0x84688c00, 0x8904828e, 0x441e8cf7, 0x0b270cff, 0x80008000, 0x45030003, 0xfb430fab, 0x080f4107, 0x410bf942, 0xd34307e5, 0x070d4207, 0x80800123, + 0x205d85fe, 0x849183fe, 0x20128404, 0x82809702, 0x00002217, 0x41839a09, 0x6b4408cf, 0x0733440f, 0x3b460720, 0x82798707, 0x97802052, 0x0000296f, + 0xff800004, 0x01800100, 0x0021ef89, 0x0a914625, 0x410a4d41, 0x00250ed4, 0x00050000, 0x056d4280, 0x210a7b46, 0x21481300, 0x46ed8512, 0x00210bd1, + 0x89718202, 0x21738877, 0x2b850001, 0x00220582, 0x87450a00, 0x0ddb4606, 0x41079b42, 0x9d420c09, 0x0b09420b, 0x8d820720, 0x9742fc84, 0x42098909, + 0x00241e0f, 0x00800014, 0x0b47da82, 0x0833442a, 0x49078d41, 0x2f450f13, 0x42278f17, 0x01200751, 0x22063742, 0x44808001, 0x20450519, 0x88068906, + 0x83fe2019, 0x4203202a, 0x1a941a58, 0x00820020, 0xe7a40e20, 0x420ce146, 0x854307e9, 0x0fcb4713, 0xff20a182, 0xfe209b82, 0x0c867f8b, 0x0021aea4, + 0x219fa40f, 0x7d41003b, 0x07194214, 0xbf440520, 0x071d4206, 0x6941a590, 0x80802309, 0x028900ff, 0xa9a4b685, 0xc5808021, 0x449b82ab, 0x152007eb, + 0x42134d46, 0x61440a15, 0x051e4208, 0x222b0442, 0x47001100, 0xfd412913, 0x17194714, 0x410f5b41, 0x02220773, 0x09428080, 0x21a98208, 0xd4420001, + 0x481c840d, 0x00232bc9, 0x42120000, 0xe74c261b, 0x149d4405, 0x07209d87, 0x410db944, 0x14421c81, 0x42fd2005, 0x80410bd2, 0x203d8531, 0x06874100, + 0x48256f4a, 0xcb420c95, 0x13934113, 0x44075d44, 0x044c0855, 0x00ff2105, 0xfe228185, 0x45448000, 0x22c5b508, 0x410c0000, 0x7b412087, 0x1bb74514, + 0x32429c85, 0x0a574805, 0x21208943, 0x8ba01300, 0x440dfb4e, 0x77431437, 0x245b4113, 0x200fb145, 0x41108ffe, 0x80203562, 0x00200082, 0x46362b42, + 0x1742178d, 0x4527830f, 0x0f830b2f, 0x4a138146, 0x802409a1, 0xfe8000ff, 0x94419982, 0x09294320, 0x04000022, 0x49050f4f, 0xcb470a63, 0x48032008, + 0x2b48067b, 0x85022008, 0x82638338, 0x00002209, 0x05af4806, 0x900e9f49, 0x84c5873f, 0x214285bd, 0x064900ff, 0x0c894607, 0x00000023, 0x4903820a, + 0x714319f3, 0x0749410c, 0x8a07a145, 0x02152507, 0xfe808000, 0x74490386, 0x8080211b, 0x0c276f82, 0x00018000, 0x48028003, 0x2b2315db, 0x43002f00, + 0x6f82142f, 0x44011521, 0x93510da7, 0x20e68508, 0x06494d80, 0x8e838020, 0x06821286, 0x124bff20, 0x25f3830c, 0x03800080, 0xe74a0380, 0x207b8715, + 0x876b861d, 0x4a152007, 0x07870775, 0xf6876086, 0x8417674a, 0x0a0021f2, 0x431c9743, 0x8d421485, 0x200b830b, 0x06474d03, 0x71828020, 0x04510120, + 0x42da8606, 0x1f831882, 0x001a0022, 0xff4d0082, 0x0b0f532c, 0x0d449b94, 0x4e312007, 0x074f12e7, 0x0bf3490b, 0xbb412120, 0x413f820a, 0xef490857, + 0x80002313, 0xe2830001, 0x6441fc20, 0x8b802006, 0x00012108, 0xfd201582, 0x492c9b48, 0x802014ff, 0x51084347, 0x0f4327f3, 0x17bf4a14, 0x201b7944, + 0x06964201, 0x134ffe20, 0x20d6830b, 0x25d78280, 0xfd800002, 0x05888000, 0x9318dc41, 0x21d282d4, 0xdb481800, 0x0dff542a, 0x45107743, 0xe14813f5, + 0x0f034113, 0x83135d45, 0x47b28437, 0xe4510e73, 0x21f58e06, 0x2b8400fd, 0x1041fcac, 0x08db4b0b, 0x421fdb41, 0xdf4b18df, 0x011d210a, 0x420af350, + 0x6e8308af, 0xac85cb86, 0x1e461082, 0x82b7a407, 0x411420a3, 0xa34130ab, 0x178f4124, 0x41139741, 0x86410d93, 0x82118511, 0x057243d8, 0x8941d9a4, + 0x3093480c, 0x4a13474f, 0xfb5016a9, 0x07ad4108, 0x4a0f9d42, 0xfe200fad, 0x4708aa41, 0x83482dba, 0x288f4d06, 0xb398c3bb, 0x44267b41, 0xb34439d7, + 0x0755410f, 0x200ebb45, 0x0f5f4215, 0x20191343, 0x06df5301, 0xf04c0220, 0x2ba64d07, 0x82050841, 0x430020ce, 0xa78f3627, 0x5213ff42, 0x2f970bc1, + 0x4305ab55, 0xa084111b, 0x450bac45, 0x5f4238b8, 0x010c2106, 0x0220ed82, 0x441bb344, 0x875010af, 0x0737480f, 0x490c5747, 0x0c840c03, 0x4c204b42, + 0x8ba905d7, 0x8b948793, 0x510c0c51, 0xfb4b24b9, 0x1b174107, 0x5709d74c, 0xd1410ca5, 0x079d480f, 0x201ff541, 0x06804780, 0x7d520120, 0x80002205, + 0x20a983fe, 0x47bb83fe, 0x1b8409b4, 0x81580220, 0x4e00202c, 0x4f41282f, 0x0eab4f17, 0x57471520, 0x0e0f4808, 0x8221e041, 0x3e1b4a8b, 0x4407175d, + 0x1b4b071f, 0x4a0f8b07, 0x174a0703, 0x0ba5411b, 0x430fb141, 0x0120057b, 0xfc20dd82, 0x4a056047, 0xf4850c0c, 0x01221982, 0x02828000, 0x1a5d088b, + 0x20094108, 0x8c0e3941, 0x4900200e, 0x7744434f, 0x200b870b, 0x0e4b5a33, 0x2b41f78b, 0x8b138307, 0x0b9f450b, 0x2406f741, 0xfd808001, 0x09475a00, + 0x84000121, 0x5980200e, 0x85450e5d, 0x832c8206, 0x4106831e, 0x00213814, 0x28b34810, 0x410c2f4b, 0x5f4a13d7, 0x0b2b4113, 0x6e43a883, 0x11174b05, + 0x4b066a45, 0xcc470541, 0x5000202b, 0xcb472f4b, 0x44b59f0f, 0xc5430b5b, 0x0d654907, 0x21065544, 0xd6828080, 0xfe201982, 0x8230ec4a, 0x120025c2, + 0x80ff8000, 0x4128d74d, 0x3320408b, 0x410a9f50, 0xdb822793, 0x822bd454, 0x61134b2e, 0x410b214a, 0xad4117c9, 0x0001211f, 0x4206854f, 0x4b430596, + 0x06bb5530, 0x2025cf46, 0x0ddd5747, 0x500ea349, 0x0f840fa7, 0x5213c153, 0x634e08d1, 0x0bbe4809, 0x59316e4d, 0x5b50053f, 0x203f6323, 0x5117eb46, + 0x94450a63, 0x246e410a, 0x63410020, 0x0bdb5f2f, 0x4233ab44, 0x39480757, 0x112d4a07, 0x7241118f, 0x000e2132, 0x9f286f41, 0x0f8762c3, 0x33350723, + 0x094e6415, 0x2010925f, 0x067252fe, 0xd0438020, 0x63a68225, 0x11203a4f, 0x480e6360, 0x5748131f, 0x079b521f, 0x200e2f43, 0x864b8315, 0x113348e7, + 0x85084e48, 0x06855008, 0x5880fd21, 0x7c420925, 0x0c414824, 0x37470c86, 0x1b8b422b, 0x5b0a8755, 0x23410c21, 0x0b83420b, 0x5a082047, 0xf482067f, + 0xa80b4c47, 0x0c0021cf, 0x20207b42, 0x0fb74100, 0x420b8744, 0xeb43076f, 0x0f6f420b, 0x4261fe20, 0x439aa00c, 0x215034e3, 0x0ff9570f, 0x4b1f2d5d, + 0x2d5d0c6f, 0x09634d0b, 0x1f51b8a0, 0x620f200c, 0xaf681e87, 0x24f94d07, 0x4e0f4945, 0xfe200c05, 0x22139742, 0x57048080, 0x23950c20, 0x97601585, + 0x4813201f, 0xad620523, 0x200f8f0f, 0x9e638f15, 0x00002181, 0x41342341, 0x0f930f0b, 0x210b4b62, 0x978f0001, 0xfe200f84, 0x8425c863, 0x2704822b, + 0x80000a00, 0x00038001, 0x610e9768, 0x834514bb, 0x0bc3430f, 0x2107e357, 0x80848080, 0x4400fe21, 0x2e410983, 0x00002a1a, 0x00000700, 0x800380ff, + 0x0fdf5800, 0x59150021, 0xd142163d, 0x0c02410c, 0x01020025, 0x65800300, 0x00240853, 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0x3a317405, 0x83808021, 0x180f20ea, 0x4626434a, 0x531818e3, 0xdb59172d, 0x0cbb460c, + 0x2013d859, 0x18b94502, 0x8f46188d, 0x77521842, 0x0a184e38, 0x9585fd20, 0x6a180684, 0xc64507e9, 0x51cbb230, 0xd3440cf3, 0x17ff6a0f, 0x450f5b42, + 0x276407c1, 0x4853180a, 0x21ccb010, 0xcf580013, 0x0c15442d, 0x410a1144, 0x1144359d, 0x5cfe2006, 0xa1410a43, 0x2bb64519, 0x2f5b7618, 0xb512b745, + 0x0cfd6fd1, 0x42089f59, 0xb8450c70, 0x0000232d, 0x50180900, 0xb9491ae3, 0x0fc37610, 0x01210f83, 0x0f3b4100, 0xa01b2742, 0x0ccd426f, 0x6e8f6f94, + 0x9c808021, 0xc7511870, 0x17c74b08, 0x9b147542, 0x44fe2079, 0xd5480c7e, 0x95ef861d, 0x101b597b, 0xf5417594, 0x9f471808, 0x86868d0e, 0x3733491c, + 0x690f4d6d, 0x43440b83, 0x1ba94c0b, 0x660cd16b, 0x802008ae, 0x74126448, 0xcb4f38a3, 0x2cb74b0b, 0x47137755, 0xe3971777, 0x1b5d0120, 0x057a4108, + 0x6e08664d, 0x17421478, 0x11af4208, 0x850c3f42, 0x08234f0c, 0x4321eb4a, 0xf3451095, 0x0f394e0f, 0x4310eb45, 0xc09707b1, 0x54431782, 0xaec08d1d, + 0x0f434dbb, 0x9f0c0b45, 0x0a3b4dbb, 0x4618bdc7, 0x536032eb, 0x17354213, 0x4d134169, 0xc7a30c2f, 0x4e254342, 0x174332cf, 0x43cdae17, 0x6b4706e4, + 0x0e16430d, 0x530b5542, 0x2f7c26bb, 0x13075f31, 0x43175342, 0x60181317, 0x6550114e, 0x28624710, 0x58070021, 0x59181683, 0x2d540cf5, 0x05d5660c, + 0x20090c7b, 0x0e157e02, 0x8000ff2b, 0x14000080, 0x80ff8000, 0x27137e03, 0x336a4b20, 0x0f817107, 0x13876e18, 0x730f2f7e, 0x2f450b75, 0x6d02200b, + 0x6d66094c, 0x4b802009, 0x15820a02, 0x2f45fe20, 0x5e032006, 0x00202fd9, 0x450af741, 0xeb412e0f, 0x0ff3411f, 0x420a8b65, 0xf7410eae, 0x1c664810, + 0x540e1145, 0xbfa509f3, 0x42302f58, 0x80200c35, 0xcb066c47, 0x4b1120c1, 0x41492abb, 0x34854110, 0xa7097b72, 0x251545c7, 0x4b2c7f56, 0xc5b40bab, + 0x940cd54e, 0x2e6151c8, 0x09f35f18, 0x4b420420, 0x09677121, 0x8f24f357, 0x1b5418e1, 0x08915a1f, 0x3143d894, 0x22541805, 0x1b9b4b0e, 0x8c0d3443, + 0x1400240d, 0x18ff8000, 0x582e6387, 0xf99b2b3b, 0x8807a550, 0x17a14790, 0x2184fd20, 0x5758fe20, 0x2354882c, 0x15000080, 0x5e056751, 0x334c2c2f, + 0x97c58f0c, 0x1fd7410f, 0x0d4d4018, 0x4114dc41, 0x04470ed6, 0x0dd54128, 0x00820020, 0x02011523, 0x22008700, 0x86480024, 0x0001240a, 0x8682001a, + 0x0002240b, 0x866c000e, 0x8a03200b, 0x8a042017, 0x0005220b, 0x22218614, 0x84060000, 0x86012017, 0x8212200f, 0x250b8519, 0x000d0001, 0x0b850031, + 0x07000224, 0x0b862600, 0x11000324, 0x0b862d00, 0x238a0420, 0x0a000524, 0x17863e00, 0x17840620, 0x01000324, 0x57820904, 0x0b85a783, 0x0b85a785, + 0x0b85a785, 0x22000325, 0x85007a00, 0x85a7850b, 0x85a7850b, 0x22a7850b, 0x82300032, 0x00342201, 0x0805862f, 0x35003131, 0x54207962, 0x74736972, + 0x47206e61, 0x6d6d6972, 0x65527265, 0x616c7567, 0x58545472, 0x6f725020, 0x43796767, 0x6e61656c, 0x30325454, 0x822f3430, 0x35313502, 0x79006200, + 0x54002000, 0x69007200, 0x74007300, 0x6e006100, 0x47200f82, 0x6d240f84, 0x65006d00, 0x52200982, 0x67240582, 0x6c007500, 0x72201d82, 0x54222b82, + 0x23825800, 0x19825020, 0x67006f22, 0x79220182, 0x1b824300, 0x3b846520, 0x1f825420, 0x41000021, 0x1422099b, 0x0b410000, 0x87088206, 0x01012102, + 0x78080982, 0x01020101, 0x01040103, 0x01060105, 0x01080107, 0x010a0109, 0x010c010b, 0x010e010d, 0x0110010f, 0x01120111, 0x01140113, 0x01160115, + 0x01180117, 0x011a0119, 0x011c011b, 0x011e011d, 0x0020011f, 0x00040003, 0x00060005, 0x00080007, 0x000a0009, 0x000c000b, 0x000e000d, 0x0010000f, + 0x00120011, 0x00140013, 0x00160015, 0x00180017, 0x001a0019, 0x001c001b, 0x001e001d, 0x08bb821f, 0x22002142, 0x24002300, 0x26002500, 0x28002700, + 0x2a002900, 0x2c002b00, 0x2e002d00, 0x30002f00, 0x32003100, 0x34003300, 0x36003500, 0x38003700, 0x3a003900, 0x3c003b00, 0x3e003d00, 0x40003f00, + 0x42004100, 0x4b09f382, 0x00450044, 0x00470046, 0x00490048, 0x004b004a, 0x004d004c, 0x004f004e, 0x00510050, 0x00530052, 0x00550054, 0x00570056, + 0x00590058, 0x005b005a, 0x005d005c, 0x005f005e, 0x01610060, 0x01220121, 0x01240123, 0x01260125, 0x01280127, 0x012a0129, 0x012c012b, 0x012e012d, + 0x0130012f, 0x01320131, 0x01340133, 0x01360135, 0x01380137, 0x013a0139, 0x013c013b, 0x013e013d, 0x0140013f, 0x00ac0041, 0x008400a3, 0x00bd0085, + 0x00e80096, 0x008e0086, 0x009d008b, 0x00a400a9, 0x008a00ef, 0x008300da, 0x00f20093, 0x008d00f3, 0x00880097, 0x00de00c3, 0x009e00f1, 0x00f500aa, + 0x00f600f4, 0x00ad00a2, 0x00c700c9, 0x006200ae, 0x00900063, 0x00cb0064, 0x00c80065, 0x00cf00ca, 0x00cd00cc, 0x00e900ce, 0x00d30066, 0x00d100d0, + 0x006700af, 0x009100f0, 0x00d400d6, 0x006800d5, 0x00ed00eb, 0x006a0089, 0x006b0069, 0x006c006d, 0x00a0006e, 0x0071006f, 0x00720070, 0x00750073, + 0x00760074, 0x00ea0077, 0x007a0078, 0x007b0079, 0x007c007d, 0x00a100b8, 0x007e007f, 0x00810080, 0x00ee00ec, 0x6e750eba, 0x646f6369, 0x78302365, + 0x31303030, 0x32200e8d, 0x33200e8d, 0x34200e8d, 0x35200e8d, 0x36200e8d, 0x37200e8d, 0x38200e8d, 0x39200e8d, 0x61200e8d, 0x62200e8d, 0x63200e8d, + 0x64200e8d, 0x65200e8d, 0x66200e8d, 0x31210e8c, 0x8d0e8d30, 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, + 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, 0x66312def, 0x6c656406, 0x04657465, 0x6f727545, 0x3820ec8c, 0x3820ec8d, + 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, + 0x3820ec8d, 0x200ddc41, 0x0ddc4139, 0xef8d3920, 0xef8d3920, 0xef8d3920, 0xef8d3920, 0xef8d3920, 0xef8d3920, 0xef8d3920, 0xef8d3920, 0xef8d3920, + 0xef8d3920, 0xef8d3920, 0xef8d3920, 0xef8d3920, 0xef8d3920, 0x00663923, 0x48fa0500, 0x00f762f9, +}; + +static void GetDefaultCompressedFontDataTTF(const void** ttf_compressed_data, unsigned int* ttf_compressed_size) +{ + *ttf_compressed_data = proggy_clean_ttf_compressed_data; + *ttf_compressed_size = proggy_clean_ttf_compressed_size; +} + +//----------------------------------------------------------------------------- + +//---- Include imgui_user.inl at the end of imgui.cpp +//---- So you can include code that extends ImGui using its private data/functions. +#ifdef IMGUI_INCLUDE_IMGUI_USER_INL +#include "imgui_user.inl" +#endif + +//----------------------------------------------------------------------------- diff --git a/testbed/imgui/imgui.h b/testbed/imgui/imgui.h new file mode 100644 index 00000000..bb9af931 --- /dev/null +++ b/testbed/imgui/imgui.h @@ -0,0 +1,1048 @@ +// ImGui library v1.39 WIP +// See .cpp file for documentation. +// See ImGui::ShowTestWindow() for sample code. +// Read 'Programmer guide' in .cpp for notes on how to setup ImGui in your codebase. +// Get latest version at https://github.com/ocornut/imgui + +#pragma once + +#include "imconfig.h" // User-editable configuration file +#include // FLT_MAX +#include // va_list +#include // ptrdiff_t, NULL +#include // NULL, malloc, free, qsort, atoi +#include // memset, memmove, memcpy, strlen, strchr, strcpy, strcmp + +#define IMGUI_VERSION "1.39 WIP" + +// Define assertion handler. +#ifndef IM_ASSERT +#include +#define IM_ASSERT(_EXPR) assert(_EXPR) +#endif + +// Define attributes of all API symbols declarations, e.g. for DLL under Windows. +#ifndef IMGUI_API +#define IMGUI_API +#endif + +// Forward declarations +struct ImDrawCmd; +struct ImDrawList; +struct ImFont; +struct ImFontAtlas; +struct ImGuiIO; +struct ImGuiStorage; +struct ImGuiStyle; + +typedef unsigned int ImU32; +typedef unsigned short ImWchar; // character for display +typedef void* ImTextureID; // user data to refer to a texture (e.g. store your texture handle/id) +typedef ImU32 ImGuiID; // unique ID used by widgets (typically hashed from a stack of string) +typedef int ImGuiCol; // enum ImGuiCol_ +typedef int ImGuiStyleVar; // enum ImGuiStyleVar_ +typedef int ImGuiKey; // enum ImGuiKey_ +typedef int ImGuiColorEditMode; // enum ImGuiColorEditMode_ +typedef int ImGuiMouseCursor; // enum ImGuiMouseCursor_ +typedef int ImGuiWindowFlags; // enum ImGuiWindowFlags_ +typedef int ImGuiSetCond; // enum ImGuiSetCond_ +typedef int ImGuiInputTextFlags; // enum ImGuiInputTextFlags_ +struct ImGuiTextEditCallbackData; // for advanced uses of InputText() +typedef int (*ImGuiTextEditCallback)(ImGuiTextEditCallbackData *data); + +struct ImVec2 +{ + float x, y; + ImVec2() { x = y = 0.0f; } + ImVec2(float _x, float _y) { x = _x; y = _y; } + +#ifdef IM_VEC2_CLASS_EXTRA // Define constructor and implicit cast operators to convert back<>forth from your math types and ImVec2. + IM_VEC2_CLASS_EXTRA +#endif +}; + +struct ImVec4 +{ + float x, y, z, w; + ImVec4() { x = y = z = w = 0.0f; } + ImVec4(float _x, float _y, float _z, float _w) { x = _x; y = _y; z = _z; w = _w; } + +#ifdef IM_VEC4_CLASS_EXTRA // Define constructor and implicit cast operators to convert back<>forth from your math types and ImVec4. + IM_VEC4_CLASS_EXTRA +#endif +}; + +namespace ImGui +{ + // Proxy functions to access the MemAllocFn/MemFreeFn pointers in ImGui::GetIO(). The only reason they exist here is to allow ImVector<> to compile inline. + IMGUI_API void* MemAlloc(size_t sz); + IMGUI_API void MemFree(void* ptr); +} + +// std::vector<> like class to avoid dragging dependencies (also: windows implementation of STL with debug enabled is absurdly slow, so let's bypass it so our code runs fast in debug). +// Use '#define ImVector std::vector' if you want to use the STL type or your own type. +// Our implementation does NOT call c++ constructors! because the data types we use don't need them (but that could be added as well). Only provide the minimum functionalities we need. +#ifndef ImVector +template +class ImVector +{ +protected: + size_t Size; + size_t Capacity; + T* Data; + +public: + typedef T value_type; + typedef value_type* iterator; + typedef const value_type* const_iterator; + + ImVector() { Size = Capacity = 0; Data = NULL; } + ~ImVector() { if (Data) ImGui::MemFree(Data); } + + inline bool empty() const { return Size == 0; } + inline size_t size() const { return Size; } + inline size_t capacity() const { return Capacity; } + + inline value_type& at(size_t i) { IM_ASSERT(i < Size); return Data[i]; } + inline const value_type& at(size_t i) const { IM_ASSERT(i < Size); return Data[i]; } + inline value_type& operator[](size_t i) { IM_ASSERT(i < Size); return Data[i]; } + inline const value_type& operator[](size_t i) const { IM_ASSERT(i < Size); return Data[i]; } + + inline void clear() { if (Data) { Size = Capacity = 0; ImGui::MemFree(Data); Data = NULL; } } + inline iterator begin() { return Data; } + inline const_iterator begin() const { return Data; } + inline iterator end() { return Data + Size; } + inline const_iterator end() const { return Data + Size; } + inline value_type& front() { IM_ASSERT(Size > 0); return Data[0]; } + inline const value_type& front() const { IM_ASSERT(Size > 0); return Data[0]; } + inline value_type& back() { IM_ASSERT(Size > 0); return Data[Size-1]; } + inline const value_type& back() const { IM_ASSERT(Size > 0); return Data[Size-1]; } + inline void swap(ImVector& rhs) { const size_t rhs_size = rhs.Size; rhs.Size = Size; Size = rhs_size; const size_t rhs_cap = rhs.Capacity; rhs.Capacity = Capacity; Capacity = rhs_cap; value_type* rhs_data = rhs.Data; rhs.Data = Data; Data = rhs_data; } + + inline void resize(size_t new_size) { if (new_size > Capacity) reserve(new_size); Size = new_size; } + inline void reserve(size_t new_capacity) + { + if (new_capacity <= Capacity) return; + T* new_data = (value_type*)ImGui::MemAlloc(new_capacity * sizeof(value_type)); + memcpy(new_data, Data, Size * sizeof(value_type)); + ImGui::MemFree(Data); + Data = new_data; + Capacity = new_capacity; + } + + inline void push_back(const value_type& v) { if (Size == Capacity) reserve(Capacity ? Capacity * 2 : 4); Data[Size++] = v; } + inline void pop_back() { IM_ASSERT(Size > 0); Size--; } + + inline iterator erase(const_iterator it) { IM_ASSERT(it >= begin() && it < end()); const ptrdiff_t off = it - begin(); memmove(Data + off, Data + off + 1, (Size - (size_t)off - 1) * sizeof(value_type)); Size--; return Data + off; } + inline iterator insert(const_iterator it, const value_type& v) { IM_ASSERT(it >= begin() && it <= end()); const ptrdiff_t off = it - begin(); if (Size == Capacity) reserve(Capacity ? Capacity * 2 : 4); if (off < (int)Size) memmove(Data + off + 1, Data + off, (Size - (size_t)off) * sizeof(value_type)); Data[off] = v; Size++; return Data + off; } +}; +#endif // #ifndef ImVector + +// Helpers at bottom of the file: +// - IMGUI_ONCE_UPON_A_FRAME // Execute a block of code once per frame only (convenient for creating UI within deep-nested code that runs multiple times) +// - struct ImGuiTextFilter // Parse and apply text filters. In format "aaaaa[,bbbb][,ccccc]" +// - struct ImGuiTextBuffer // Text buffer for logging/accumulating text +// - struct ImGuiStorage // Custom key value storage (if you need to alter open/close states manually) +// - struct ImDrawList // Draw command list +// - struct ImFont // TTF font loader, bake glyphs into bitmap + +// ImGui end-user API +// In a namespace so that user can add extra functions in a separate file (e.g. Value() helpers for your vector or common types) +namespace ImGui +{ + // Main + IMGUI_API ImGuiIO& GetIO(); + IMGUI_API ImGuiStyle& GetStyle(); + IMGUI_API void NewFrame(); + IMGUI_API void Render(); + IMGUI_API void Shutdown(); + IMGUI_API void ShowUserGuide(); // help block + IMGUI_API void ShowStyleEditor(ImGuiStyle* ref = NULL); // style editor block + IMGUI_API void ShowTestWindow(bool* opened = NULL); // test window, demonstrate ImGui features + IMGUI_API void ShowMetricsWindow(bool* opened = NULL); // metrics window + + // Window + // See implementation in .cpp for details + IMGUI_API bool Begin(const char* name = "Debug", bool* p_opened = NULL, ImGuiWindowFlags flags = 0); // return false when window is collapsed, so you can early out in your code. 'bool* p_opened' creates a widget on the upper-right to close the window (which sets your bool to false). + IMGUI_API bool Begin(const char* name, bool* p_opened, const ImVec2& size_on_first_use, float bg_alpha = -1.0f, ImGuiWindowFlags flags = 0); // this is the older/longer API. call SetNextWindowSize() instead if you want to set a window size. For regular windows, 'size_on_first_use' only applies to the first time EVER the window is created and probably not what you want! maybe obsolete this API eventually. + IMGUI_API void End(); + IMGUI_API bool BeginChild(const char* str_id, const ImVec2& size = ImVec2(0,0), bool border = false, ImGuiWindowFlags extra_flags = 0); // size==0.0f: use remaining window size, size<0.0f: use remaining window size minus abs(size). on each axis. + IMGUI_API bool BeginChild(ImGuiID id, const ImVec2& size = ImVec2(0,0), bool border = false, ImGuiWindowFlags extra_flags = 0); // " + IMGUI_API void EndChild(); + IMGUI_API ImVec2 GetContentRegionMax(); // window or current column boundaries, in windows coordinates + IMGUI_API ImVec2 GetWindowContentRegionMin(); // window boundaries, in windows coordinates + IMGUI_API ImVec2 GetWindowContentRegionMax(); + IMGUI_API ImDrawList* GetWindowDrawList(); // get rendering command-list if you want to append your own draw primitives + IMGUI_API ImFont* GetWindowFont(); + IMGUI_API float GetWindowFontSize(); // size (also height in pixels) of current font with current scale applied + IMGUI_API void SetWindowFontScale(float scale); // per-window font scale. Adjust IO.FontGlobalScale if you want to scale all windows + IMGUI_API ImVec2 GetWindowPos(); // you should rarely need/care about the window position, but it can be useful if you want to do your own drawing + IMGUI_API ImVec2 GetWindowSize(); // get current window position + IMGUI_API float GetWindowWidth(); + IMGUI_API bool GetWindowCollapsed(); + + IMGUI_API void SetNextWindowPos(const ImVec2& pos, ImGuiSetCond cond = 0); // set next window position - call before Begin() + IMGUI_API void SetNextWindowSize(const ImVec2& size, ImGuiSetCond cond = 0); // set next window size. set to ImVec2(0,0) to force an auto-fit + IMGUI_API void SetNextWindowCollapsed(bool collapsed, ImGuiSetCond cond = 0); // set next window collapsed state + IMGUI_API void SetNextWindowFocus(); // set next window to be focused / front-most + IMGUI_API void SetWindowPos(const ImVec2& pos, ImGuiSetCond cond = 0); // set current window position - call within Begin()/End(). may incur tearing + IMGUI_API void SetWindowSize(const ImVec2& size, ImGuiSetCond cond = 0); // set current window size. set to ImVec2(0,0) to force an auto-fit. may incur tearing + IMGUI_API void SetWindowCollapsed(bool collapsed, ImGuiSetCond cond = 0); // set current window collapsed state + IMGUI_API void SetWindowFocus(); // set current window to be focused / front-most + IMGUI_API void SetWindowPos(const char* name, const ImVec2& pos, ImGuiSetCond cond = 0); // set named window position - call within Begin()/End(). may incur tearing + IMGUI_API void SetWindowSize(const char* name, const ImVec2& size, ImGuiSetCond cond = 0); // set named window size. set to ImVec2(0,0) to force an auto-fit. may incur tearing + IMGUI_API void SetWindowCollapsed(const char* name, bool collapsed, ImGuiSetCond cond = 0); // set named window collapsed state + IMGUI_API void SetWindowFocus(const char* name); // set named window to be focused / front-most. use NULL to remove focus. + + IMGUI_API float GetScrollPosY(); // get scrolling position [0..GetScrollMaxY()] + IMGUI_API float GetScrollMaxY(); // get maximum scrolling position == ContentSize.Y - WindowSize.Y + IMGUI_API void SetScrollPosHere(); // adjust scrolling position to center into the current cursor position + IMGUI_API void SetKeyboardFocusHere(int offset = 0); // focus keyboard on the next widget. Use positive 'offset' to access sub components of a multiple component widget + IMGUI_API void SetStateStorage(ImGuiStorage* tree); // replace tree state storage with our own (if you want to manipulate it yourself, typically clear subsection of it) + IMGUI_API ImGuiStorage* GetStateStorage(); + + // Parameters stacks (shared) + IMGUI_API void PushFont(ImFont* font); // use NULL as a shortcut to push default font + IMGUI_API void PopFont(); + IMGUI_API void PushStyleColor(ImGuiCol idx, const ImVec4& col); + IMGUI_API void PopStyleColor(int count = 1); + IMGUI_API void PushStyleVar(ImGuiStyleVar idx, float val); + IMGUI_API void PushStyleVar(ImGuiStyleVar idx, const ImVec2& val); + IMGUI_API void PopStyleVar(int count = 1); + + // Parameters stacks (current window) + IMGUI_API void PushItemWidth(float item_width); // width of items for the common item+label case, pixels. 0.0f = default to ~2/3 of windows width, >0.0f: width in pixels, <0.0f align xx pixels to the right of window (so -0.01f always align width to the right side) + IMGUI_API void PopItemWidth(); + IMGUI_API float CalcItemWidth(); // width of item given pushed settings and current cursor position + IMGUI_API void PushAllowKeyboardFocus(bool v); // allow focusing using TAB/Shift-TAB, enabled by default but you can disable it for certain widgets + IMGUI_API void PopAllowKeyboardFocus(); + IMGUI_API void PushTextWrapPos(float wrap_pos_x = 0.0f); // word-wrapping for Text*() commands. < 0.0f: no wrapping; 0.0f: wrap to end of window (or column); > 0.0f: wrap at 'wrap_pos_x' position in window local space + IMGUI_API void PopTextWrapPos(); + + // Tooltip + IMGUI_API void SetTooltip(const char* fmt, ...); // set tooltip under mouse-cursor, typically use with ImGui::IsHovered(). last call wins + IMGUI_API void SetTooltipV(const char* fmt, va_list args); + IMGUI_API void BeginTooltip(); // use to create full-featured tooltip windows that aren't just text + IMGUI_API void EndTooltip(); + + // Popup + IMGUI_API void BeginPopup(bool* p_opened); + IMGUI_API void EndPopup(); + + // Layout + IMGUI_API void BeginGroup(); + IMGUI_API void EndGroup(); + IMGUI_API void Separator(); // horizontal line + IMGUI_API void SameLine(int column_x = 0, int spacing_w = -1); // call between widgets or groups to layout them horizontally + IMGUI_API void Spacing(); // add vertical spacing + IMGUI_API void Indent(); // move content position toward the right by style.IndentSpacing pixels + IMGUI_API void Unindent(); // move content position back to the left (cancel Indent) + IMGUI_API void Columns(int count = 1, const char* id = NULL, bool border=true); // setup number of columns + IMGUI_API void NextColumn(); // next column + IMGUI_API int GetColumnIndex(); // get current column index + IMGUI_API float GetColumnOffset(int column_index = -1); // get position of column line (in pixels, from the left side of the contents region). pass -1 to use current column, otherwise 0..GetcolumnsCount() inclusive. column 0 is usually 0.0f and not resizable unless you call this + IMGUI_API void SetColumnOffset(int column_index, float offset_x); // set position of column line (in pixels, from the left side of the contents region). pass -1 to use current column + IMGUI_API float GetColumnWidth(int column_index = -1); // column width (== GetColumnOffset(GetColumnIndex()+1) - GetColumnOffset(GetColumnOffset()) + IMGUI_API int GetColumnsCount(); // number of columns (what was passed to Columns()) + IMGUI_API ImVec2 GetCursorPos(); // cursor position is relative to window position + IMGUI_API float GetCursorPosX(); // " + IMGUI_API float GetCursorPosY(); // " + IMGUI_API void SetCursorPos(const ImVec2& pos); // " + IMGUI_API void SetCursorPosX(float x); // " + IMGUI_API void SetCursorPosY(float y); // " + IMGUI_API ImVec2 GetCursorScreenPos(); // cursor position in absolute screen coordinates [0..io.DisplaySize] + IMGUI_API void SetCursorScreenPos(const ImVec2& pos); // cursor position in absolute screen coordinates [0..io.DisplaySize] + IMGUI_API void AlignFirstTextHeightToWidgets(); // call once if the first item on the line is a Text() item and you want to vertically lower it to match subsequent (bigger) widgets + IMGUI_API float GetTextLineHeight(); // height of font == GetWindowFontSize() + IMGUI_API float GetTextLineHeightWithSpacing(); // spacing (in pixels) between 2 consecutive lines of text == GetWindowFontSize() + GetStyle().ItemSpacing.y + + // ID scopes + // If you are creating widgets in a loop you most likely want to push a unique identifier so ImGui can differentiate them + // You can also use "##extra" within your widget name to distinguish them from each others (see 'Programmer Guide') + IMGUI_API void PushID(const char* str_id); // push identifier into the ID stack. IDs are hash of the *entire* stack! + IMGUI_API void PushID(const char* str_id_begin, const char* str_id_end); + IMGUI_API void PushID(const void* ptr_id); + IMGUI_API void PushID(const int int_id); + IMGUI_API void PopID(); + IMGUI_API ImGuiID GetID(const char* str_id); // calculate unique ID (hash of whole ID stack + given parameter). useful if you want to query into ImGuiStorage yourself. otherwise rarely needed + IMGUI_API ImGuiID GetID(const char* str_id_begin, const char* str_id_end); + IMGUI_API ImGuiID GetID(const void* ptr_id); + + // Widgets + IMGUI_API void Text(const char* fmt, ...); + IMGUI_API void TextV(const char* fmt, va_list args); + IMGUI_API void TextColored(const ImVec4& col, const char* fmt, ...); // shortcut for PushStyleColor(ImGuiCol_Text, col); Text(fmt, ...); PopStyleColor(); + IMGUI_API void TextColoredV(const ImVec4& col, const char* fmt, va_list args); + IMGUI_API void TextWrapped(const char* fmt, ...); // shortcut for PushTextWrapPos(0.0f); Text(fmt, ...); PopTextWrapPos(); + IMGUI_API void TextWrappedV(const char* fmt, va_list args); + IMGUI_API void TextUnformatted(const char* text, const char* text_end = NULL); // doesn't require null terminated string if 'text_end' is specified. no copy done to any bounded stack buffer, recommended for long chunks of text + IMGUI_API void LabelText(const char* label, const char* fmt, ...); // display text+label aligned the same way as value+label widgets + IMGUI_API void LabelTextV(const char* label, const char* fmt, va_list args); + IMGUI_API void Bullet(); + IMGUI_API void BulletText(const char* fmt, ...); + IMGUI_API void BulletTextV(const char* fmt, va_list args); + IMGUI_API bool Button(const char* label, const ImVec2& size = ImVec2(0,0), bool repeat_when_held = false); + IMGUI_API bool SmallButton(const char* label); + IMGUI_API bool InvisibleButton(const char* str_id, const ImVec2& size); + IMGUI_API void Image(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0 = ImVec2(0,0), const ImVec2& uv1 = ImVec2(1,1), const ImVec4& tint_col = ImVec4(1,1,1,1), const ImVec4& border_col = ImVec4(0,0,0,0)); + IMGUI_API bool ImageButton(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0 = ImVec2(0,0), const ImVec2& uv1 = ImVec2(1,1), int frame_padding = -1, const ImVec4& bg_col = ImVec4(0,0,0,1), const ImVec4& tint_col = ImVec4(1,1,1,1)); // <0 frame_padding uses default frame padding settings. 0 for no padding + IMGUI_API bool CollapsingHeader(const char* label, const char* str_id = NULL, bool display_frame = true, bool default_open = false); + IMGUI_API bool Checkbox(const char* label, bool* v); + IMGUI_API bool CheckboxFlags(const char* label, unsigned int* flags, unsigned int flags_value); + IMGUI_API bool RadioButton(const char* label, bool active); + IMGUI_API bool RadioButton(const char* label, int* v, int v_button); + IMGUI_API bool Combo(const char* label, int* current_item, const char** items, int items_count, int height_in_items = -1); + IMGUI_API bool Combo(const char* label, int* current_item, const char* items_separated_by_zeros, int height_in_items = -1); // separate items with \0, end item-list with \0\0 + IMGUI_API bool Combo(const char* label, int* current_item, bool (*items_getter)(void* data, int idx, const char** out_text), void* data, int items_count, int height_in_items = -1); + IMGUI_API bool ColorButton(const ImVec4& col, bool small_height = false, bool outline_border = true); + IMGUI_API bool ColorEdit3(const char* label, float col[3]); + IMGUI_API bool ColorEdit4(const char* label, float col[4], bool show_alpha = true); + IMGUI_API void ColorEditMode(ImGuiColorEditMode mode); + IMGUI_API void PlotLines(const char* label, const float* values, int values_count, int values_offset = 0, const char* overlay_text = NULL, float scale_min = FLT_MAX, float scale_max = FLT_MAX, ImVec2 graph_size = ImVec2(0,0), size_t stride = sizeof(float)); + IMGUI_API void PlotLines(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset = 0, const char* overlay_text = NULL, float scale_min = FLT_MAX, float scale_max = FLT_MAX, ImVec2 graph_size = ImVec2(0,0)); + IMGUI_API void PlotHistogram(const char* label, const float* values, int values_count, int values_offset = 0, const char* overlay_text = NULL, float scale_min = FLT_MAX, float scale_max = FLT_MAX, ImVec2 graph_size = ImVec2(0,0), size_t stride = sizeof(float)); + IMGUI_API void PlotHistogram(const char* label, float (*values_getter)(void* data, int idx), void* data, int values_count, int values_offset = 0, const char* overlay_text = NULL, float scale_min = FLT_MAX, float scale_max = FLT_MAX, ImVec2 graph_size = ImVec2(0,0)); + + // Widgets: Sliders (tip: ctrl+click on a slider to input text) + IMGUI_API bool SliderFloat(const char* label, float* v, float v_min, float v_max, const char* display_format = "%.3f", float power = 1.0f); // adjust display_format to decorate the value with a prefix or a suffix. Use power!=1.0 for logarithmic sliders + IMGUI_API bool SliderFloat2(const char* label, float v[2], float v_min, float v_max, const char* display_format = "%.3f", float power = 1.0f); + IMGUI_API bool SliderFloat3(const char* label, float v[3], float v_min, float v_max, const char* display_format = "%.3f", float power = 1.0f); + IMGUI_API bool SliderFloat4(const char* label, float v[4], float v_min, float v_max, const char* display_format = "%.3f", float power = 1.0f); + IMGUI_API bool SliderAngle(const char* label, float* v_rad, float v_degrees_min = -360.0f, float v_degrees_max = +360.0f); + IMGUI_API bool SliderInt(const char* label, int* v, int v_min, int v_max, const char* display_format = "%.0f"); + IMGUI_API bool SliderInt2(const char* label, int v[2], int v_min, int v_max, const char* display_format = "%.0f"); + IMGUI_API bool SliderInt3(const char* label, int v[3], int v_min, int v_max, const char* display_format = "%.0f"); + IMGUI_API bool SliderInt4(const char* label, int v[4], int v_min, int v_max, const char* display_format = "%.0f"); + IMGUI_API bool VSliderFloat(const char* label, const ImVec2& size, float* v, float v_min, float v_max, const char* display_format = "%.3f", float power = 1.0f); + IMGUI_API bool VSliderInt(const char* label, const ImVec2& size, int* v, int v_min, int v_max, const char* display_format = "%.0f"); + + // Widgets: Drags (tip: ctrl+click on a drag box to input text) + IMGUI_API bool DragFloat(const char* label, float* v, float v_speed = 1.0f, float v_min = 0.0f, float v_max = 0.0f, const char* display_format = "%.3f", float power = 1.0f); // If v_max >= v_max we have no bound + IMGUI_API bool DragFloat2(const char* label, float v[2], float v_speed = 1.0f, float v_min = 0.0f, float v_max = 0.0f, const char* display_format = "%.3f", float power = 1.0f); + IMGUI_API bool DragFloat3(const char* label, float v[3], float v_speed = 1.0f, float v_min = 0.0f, float v_max = 0.0f, const char* display_format = "%.3f", float power = 1.0f); + IMGUI_API bool DragFloat4(const char* label, float v[4], float v_speed = 1.0f, float v_min = 0.0f, float v_max = 0.0f, const char* display_format = "%.3f", float power = 1.0f); + IMGUI_API bool DragInt(const char* label, int* v, float v_speed = 1.0f, int v_min = 0, int v_max = 0, const char* display_format = "%.0f"); // If v_max >= v_max we have no bound + IMGUI_API bool DragInt2(const char* label, int v[2], float v_speed = 1.0f, int v_min = 0, int v_max = 0, const char* display_format = "%.0f"); + IMGUI_API bool DragInt3(const char* label, int v[3], float v_speed = 1.0f, int v_min = 0, int v_max = 0, const char* display_format = "%.0f"); + IMGUI_API bool DragInt4(const char* label, int v[4], float v_speed = 1.0f, int v_min = 0, int v_max = 0, const char* display_format = "%.0f"); + + // Widgets: Input + IMGUI_API bool InputText(const char* label, char* buf, size_t buf_size, ImGuiInputTextFlags flags = 0, ImGuiTextEditCallback callback = NULL, void* user_data = NULL); + IMGUI_API bool InputFloat(const char* label, float* v, float step = 0.0f, float step_fast = 0.0f, int decimal_precision = -1, ImGuiInputTextFlags extra_flags = 0); + IMGUI_API bool InputFloat2(const char* label, float v[2], int decimal_precision = -1); + IMGUI_API bool InputFloat3(const char* label, float v[3], int decimal_precision = -1); + IMGUI_API bool InputFloat4(const char* label, float v[4], int decimal_precision = -1); + IMGUI_API bool InputInt(const char* label, int* v, int step = 1, int step_fast = 100, ImGuiInputTextFlags extra_flags = 0); + IMGUI_API bool InputInt2(const char* label, int v[2]); + IMGUI_API bool InputInt3(const char* label, int v[3]); + IMGUI_API bool InputInt4(const char* label, int v[4]); + + // Widgets: Trees + IMGUI_API bool TreeNode(const char* str_label_id); // if returning 'true' the node is open and the user is responsible for calling TreePop + IMGUI_API bool TreeNode(const char* str_id, const char* fmt, ...); // " + IMGUI_API bool TreeNode(const void* ptr_id, const char* fmt, ...); // " + IMGUI_API bool TreeNodeV(const char* str_id, const char* fmt, va_list args); // " + IMGUI_API bool TreeNodeV(const void* ptr_id, const char* fmt, va_list args); // " + IMGUI_API void TreePush(const char* str_id = NULL); // already called by TreeNode(), but you can call Push/Pop yourself for layouting purpose + IMGUI_API void TreePush(const void* ptr_id = NULL); // " + IMGUI_API void TreePop(); + IMGUI_API void SetNextTreeNodeOpened(bool opened, ImGuiSetCond cond = 0); // set next tree node to be opened. + + // Widgets: Selectable / Lists + IMGUI_API bool Selectable(const char* label, bool selected = false, const ImVec2& size = ImVec2(0,0)); + IMGUI_API bool Selectable(const char* label, bool* p_selected, const ImVec2& size = ImVec2(0,0)); + IMGUI_API bool ListBox(const char* label, int* current_item, const char** items, int items_count, int height_in_items = -1); + IMGUI_API bool ListBox(const char* label, int* current_item, bool (*items_getter)(void* data, int idx, const char** out_text), void* data, int items_count, int height_in_items = -1); + IMGUI_API bool ListBoxHeader(const char* label, const ImVec2& size = ImVec2(0,0)); // use if you want to reimplement ListBox() will custom data or interactions. make sure to call ListBoxFooter() afterwards. + IMGUI_API bool ListBoxHeader(const char* label, int items_count, int height_in_items = -1); // " + IMGUI_API void ListBoxFooter(); // terminate the scrolling region + + // Widgets: Value() Helpers. Output single value in "name: value" format (tip: freely declare your own within the ImGui namespace!) + IMGUI_API void Value(const char* prefix, bool b); + IMGUI_API void Value(const char* prefix, int v); + IMGUI_API void Value(const char* prefix, unsigned int v); + IMGUI_API void Value(const char* prefix, float v, const char* float_format = NULL); + IMGUI_API void Color(const char* prefix, const ImVec4& v); + IMGUI_API void Color(const char* prefix, unsigned int v); + + // Logging: all text output from interface is redirected to tty/file/clipboard. Tree nodes are automatically opened. + IMGUI_API void LogToTTY(int max_depth = -1); // start logging to tty + IMGUI_API void LogToFile(int max_depth = -1, const char* filename = NULL); // start logging to file + IMGUI_API void LogToClipboard(int max_depth = -1); // start logging to OS clipboard + IMGUI_API void LogFinish(); // stop logging (close file, etc.) + IMGUI_API void LogButtons(); // helper to display buttons for logging to tty/file/clipboard + IMGUI_API void LogText(const char* fmt, ...); // pass text data straight to log (without being displayed) + + // Utilities + IMGUI_API bool IsItemHovered(); // was the last item hovered by mouse? + IMGUI_API bool IsItemHoveredRect(); // was the last item hovered by mouse? even if another item is active while we are hovering this + IMGUI_API bool IsItemActive(); // was the last item active? (e.g. button being held, text field being edited- items that don't interact will always return false) + IMGUI_API bool IsAnyItemActive(); // + IMGUI_API bool IsItemVisible(); + IMGUI_API ImVec2 GetItemRectMin(); // get bounding rect of last item in screen space + IMGUI_API ImVec2 GetItemRectMax(); // " + IMGUI_API ImVec2 GetItemRectSize(); // " + IMGUI_API bool IsWindowFocused(); // is current window focused (differentiate child windows from each others) + IMGUI_API bool IsRootWindowFocused(); // is current root window focused + IMGUI_API bool IsRootWindowOrAnyChildFocused(); // is current root window or any of its child (including current window) focused + IMGUI_API bool IsRectClipped(const ImVec2& size); // test if rectangle of given size starting from cursor pos is out of clipping region. to perform coarse clipping on user's side (as an optimization) + IMGUI_API bool IsKeyPressed(int key_index, bool repeat = true); // key_index into the keys_down[512] array, imgui doesn't know the semantic of each entry + IMGUI_API bool IsMouseClicked(int button, bool repeat = false); + IMGUI_API bool IsMouseDoubleClicked(int button); + IMGUI_API bool IsMouseHoveringWindow(); // is mouse hovering current window ("window" in API names always refer to current window) + IMGUI_API bool IsMouseHoveringAnyWindow(); // is mouse hovering any active imgui window + IMGUI_API bool IsMouseHoveringRect(const ImVec2& rect_min, const ImVec2& rect_max);// is mouse hovering given bounding rect + IMGUI_API bool IsMouseDragging(int button = 0, float lock_threshold = -1.0f); // is mouse dragging. if lock_threshold < -1.0f uses io.MouseDraggingThreshold + IMGUI_API bool IsPosHoveringAnyWindow(const ImVec2& pos); // is given position hovering any active imgui window + IMGUI_API ImVec2 GetMousePos(); // shortcut to ImGui::GetIO().MousePos provided by user, to be consistent with other calls + IMGUI_API ImVec2 GetMouseDragDelta(int button = 0, float lock_threshold = -1.0f); // dragging amount since clicking, also see: GetItemActiveDragDelta(). if lock_threshold < -1.0f uses io.MouseDraggingThreshold + IMGUI_API void ResetMouseDragDelta(int button = 0); + IMGUI_API ImGuiMouseCursor GetMouseCursor(); // get desired cursor type, reset in ImGui::NewFrame(), this updated during the frame. valid before Render(). If you use software rendering by setting io.MouseDrawCursor ImGui will render those for you + IMGUI_API void SetMouseCursor(ImGuiMouseCursor type); // set desired cursor type + IMGUI_API float GetTime(); + IMGUI_API int GetFrameCount(); + IMGUI_API const char* GetStyleColName(ImGuiCol idx); + IMGUI_API ImVec2 CalcItemRectClosestPoint(const ImVec2& pos, bool on_edge = false, float outward = +0.0f); // utility to find the closest point the last item bounding rectangle edge. useful to visually link items + IMGUI_API ImVec2 CalcTextSize(const char* text, const char* text_end = NULL, bool hide_text_after_double_hash = false, float wrap_width = -1.0f); + IMGUI_API void CalcListClipping(int items_count, float items_height, int* out_items_display_start, int* out_items_display_end); // helper to manually clip large list of items. see comments in implementation + + IMGUI_API void BeginChildFrame(ImGuiID id, const ImVec2& size); // helper to create a child window / scrolling region that looks like a normal widget frame + IMGUI_API void EndChildFrame(); + + IMGUI_API ImU32 ColorConvertFloat4ToU32(const ImVec4& in); + IMGUI_API void ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float& out_s, float& out_v); + IMGUI_API void ColorConvertHSVtoRGB(float h, float s, float v, float& out_r, float& out_g, float& out_b); + + // Internal state access - if you want to share ImGui state between modules (e.g. DLL) or allocate it yourself + IMGUI_API const char* GetVersion(); + IMGUI_API void* GetInternalState(); + IMGUI_API size_t GetInternalStateSize(); + IMGUI_API void SetInternalState(void* state, bool construct = false); + + // Obsolete (will be removed) + IMGUI_API void GetDefaultFontData(const void** fnt_data, unsigned int* fnt_size, const void** png_data, unsigned int* png_size); // OBSOLETE + static inline void OpenNextNode(bool open) { ImGui::SetNextTreeNodeOpened(open, 0); } // OBSOLETE + static inline bool GetWindowIsFocused() { return ImGui::IsWindowFocused(); } // OBSOLETE + static inline ImVec2 GetItemBoxMin() { return GetItemRectMin(); } // OBSOLETE + static inline ImVec2 GetItemBoxMax() { return GetItemRectMax(); } // OBSOLETE + static inline bool IsClipped(const ImVec2& size) { return IsRectClipped(size); } // OBSOLETE + static inline bool IsMouseHoveringBox(const ImVec2& rect_min, const ImVec2& rect_max) { return IsMouseHoveringRect(rect_min, rect_max); } // OBSOLETE + +} // namespace ImGui + +// Flags for ImGui::Begin() +enum ImGuiWindowFlags_ +{ + // Default: 0 + ImGuiWindowFlags_NoTitleBar = 1 << 0, // Disable title-bar + ImGuiWindowFlags_NoResize = 1 << 1, // Disable user resizing with the lower-right grip + ImGuiWindowFlags_NoMove = 1 << 2, // Disable user moving the window + ImGuiWindowFlags_NoScrollbar = 1 << 3, // Disable scrollbar (window can still scroll with mouse or programatically) + ImGuiWindowFlags_NoScrollWithMouse = 1 << 4, // Disable user scrolling with mouse wheel + ImGuiWindowFlags_NoCollapse = 1 << 5, // Disable user collapsing window by double-clicking on it + ImGuiWindowFlags_AlwaysAutoResize = 1 << 6, // Resize every window to its content every frame + ImGuiWindowFlags_ShowBorders = 1 << 7, // Show borders around windows and items + ImGuiWindowFlags_NoSavedSettings = 1 << 8, // Never load/save settings in .ini file + // [Internal] + ImGuiWindowFlags_ChildWindow = 1 << 9, // For internal use by BeginChild() + ImGuiWindowFlags_ChildWindowAutoFitX = 1 << 10, // For internal use by BeginChild() + ImGuiWindowFlags_ChildWindowAutoFitY = 1 << 11, // For internal use by BeginChild() + ImGuiWindowFlags_ComboBox = 1 << 12, // For internal use by ComboBox() + ImGuiWindowFlags_Tooltip = 1 << 13, // For internal use by BeginTooltip() + ImGuiWindowFlags_Popup = 1 << 14 // For internal use by BeginPopup() +}; + +// Flags for ImGui::InputText() +enum ImGuiInputTextFlags_ +{ + // Default: 0 + ImGuiInputTextFlags_CharsDecimal = 1 << 0, // Allow 0123456789.+-*/ + ImGuiInputTextFlags_CharsHexadecimal = 1 << 1, // Allow 0123456789ABCDEFabcdef + ImGuiInputTextFlags_CharsUppercase = 1 << 2, // Turn a..z into A..Z + ImGuiInputTextFlags_CharsNoBlank = 1 << 3, // Filter out spaces, tabs + ImGuiInputTextFlags_AutoSelectAll = 1 << 4, // Select entire text when first taking mouse focus + ImGuiInputTextFlags_EnterReturnsTrue = 1 << 5, // Return 'true' when Enter is pressed (as opposed to when the value was modified) + ImGuiInputTextFlags_CallbackCompletion = 1 << 6, // Call user function on pressing TAB (for completion handling) + ImGuiInputTextFlags_CallbackHistory = 1 << 7, // Call user function on pressing Up/Down arrows (for history handling) + ImGuiInputTextFlags_CallbackAlways = 1 << 8, // Call user function every time + ImGuiInputTextFlags_CallbackCharFilter = 1 << 9 // Call user function to filter character. Modify data->EventChar to replace/filter input, or return 1 to discard character. +}; + +// User fill ImGuiIO.KeyMap[] array with indices into the ImGuiIO.KeysDown[512] array +enum ImGuiKey_ +{ + ImGuiKey_Tab, + ImGuiKey_LeftArrow, + ImGuiKey_RightArrow, + ImGuiKey_UpArrow, + ImGuiKey_DownArrow, + ImGuiKey_Home, + ImGuiKey_End, + ImGuiKey_Delete, + ImGuiKey_Backspace, + ImGuiKey_Enter, + ImGuiKey_Escape, + ImGuiKey_A, // for CTRL+A: select all + ImGuiKey_C, // for CTRL+C: copy + ImGuiKey_V, // for CTRL+V: paste + ImGuiKey_X, // for CTRL+X: cut + ImGuiKey_Y, // for CTRL+Y: redo + ImGuiKey_Z, // for CTRL+Z: undo + ImGuiKey_COUNT +}; + +// Enumeration for PushStyleColor() / PopStyleColor() +enum ImGuiCol_ +{ + ImGuiCol_Text, + ImGuiCol_WindowBg, + ImGuiCol_ChildWindowBg, + ImGuiCol_Border, + ImGuiCol_BorderShadow, + ImGuiCol_FrameBg, // Background of checkbox, radio button, plot, slider, text input + ImGuiCol_FrameBgHovered, + ImGuiCol_FrameBgActive, + ImGuiCol_TitleBg, + ImGuiCol_TitleBgCollapsed, + ImGuiCol_ScrollbarBg, + ImGuiCol_ScrollbarGrab, + ImGuiCol_ScrollbarGrabHovered, + ImGuiCol_ScrollbarGrabActive, + ImGuiCol_ComboBg, + ImGuiCol_CheckMark, + ImGuiCol_SliderGrab, + ImGuiCol_SliderGrabActive, + ImGuiCol_Button, + ImGuiCol_ButtonHovered, + ImGuiCol_ButtonActive, + ImGuiCol_Header, + ImGuiCol_HeaderHovered, + ImGuiCol_HeaderActive, + ImGuiCol_Column, + ImGuiCol_ColumnHovered, + ImGuiCol_ColumnActive, + ImGuiCol_ResizeGrip, + ImGuiCol_ResizeGripHovered, + ImGuiCol_ResizeGripActive, + ImGuiCol_CloseButton, + ImGuiCol_CloseButtonHovered, + ImGuiCol_CloseButtonActive, + ImGuiCol_PlotLines, + ImGuiCol_PlotLinesHovered, + ImGuiCol_PlotHistogram, + ImGuiCol_PlotHistogramHovered, + ImGuiCol_TextSelectedBg, + ImGuiCol_TooltipBg, + ImGuiCol_COUNT +}; + +// Enumeration for PushStyleVar() / PopStyleVar() +// NB: the enum only refers to fields of ImGuiStyle() which makes sense to be pushed/poped in UI code. Feel free to add others. +enum ImGuiStyleVar_ +{ + ImGuiStyleVar_Alpha, // float + ImGuiStyleVar_WindowPadding, // ImVec2 + ImGuiStyleVar_WindowRounding, // float + ImGuiStyleVar_ChildWindowRounding, // float + ImGuiStyleVar_FramePadding, // ImVec2 + ImGuiStyleVar_FrameRounding, // float + ImGuiStyleVar_ItemSpacing, // ImVec2 + ImGuiStyleVar_ItemInnerSpacing, // ImVec2 + ImGuiStyleVar_IndentSpacing, // float + ImGuiStyleVar_GrabMinSize // float +}; + +// Enumeration for ColorEditMode() +enum ImGuiColorEditMode_ +{ + ImGuiColorEditMode_UserSelect = -2, + ImGuiColorEditMode_UserSelectShowButton = -1, + ImGuiColorEditMode_RGB = 0, + ImGuiColorEditMode_HSV = 1, + ImGuiColorEditMode_HEX = 2 +}; + +// Enumeration for GetMouseCursor() +enum ImGuiMouseCursor_ +{ + ImGuiMouseCursor_Arrow = 0, + ImGuiMouseCursor_TextInput, // When hovering over InputText, etc. + ImGuiMouseCursor_Move, // Unused + ImGuiMouseCursor_ResizeNS, // Unused + ImGuiMouseCursor_ResizeEW, // When hovering over a column + ImGuiMouseCursor_ResizeNESW, // Unused + ImGuiMouseCursor_ResizeNWSE, // When hovering over the bottom-right corner of a window + ImGuiMouseCursor_Count_ +}; + +// Condition flags for ImGui::SetWindow***(), SetNextWindow***(), SetNextTreeNode***() functions +// All those functions treat 0 as a shortcut to ImGuiSetCond_Always +enum ImGuiSetCond_ +{ + ImGuiSetCond_Always = 1 << 0, // Set the variable + ImGuiSetCond_Once = 1 << 1, // Only set the variable on the first call per runtime session + ImGuiSetCond_FirstUseEver = 1 << 2 // Only set the variable if the window doesn't exist in the .ini file +}; + +struct ImGuiStyle +{ + float Alpha; // Global alpha applies to everything in ImGui + ImVec2 WindowPadding; // Padding within a window + ImVec2 WindowMinSize; // Minimum window size + float WindowRounding; // Radius of window corners rounding. Set to 0.0f to have rectangular windows + float ChildWindowRounding; // Radius of child window corners rounding. Set to 0.0f to have rectangular windows + ImVec2 FramePadding; // Padding within a framed rectangle (used by most widgets) + float FrameRounding; // Radius of frame corners rounding. Set to 0.0f to have rectangular frame (used by most widgets). + ImVec2 ItemSpacing; // Horizontal and vertical spacing between widgets/lines + ImVec2 ItemInnerSpacing; // Horizontal and vertical spacing between within elements of a composed widget (e.g. a slider and its label) + ImVec2 TouchExtraPadding; // Expand reactive bounding box for touch-based system where touch position is not accurate enough. Unfortunately we don't sort widgets so priority on overlap will always be given to the first widget. So don't grow this too much! + ImVec2 AutoFitPadding; // Extra space after auto-fit (double-clicking on resize grip) + float WindowFillAlphaDefault; // Default alpha of window background, if not specified in ImGui::Begin() + float IndentSpacing; // Horizontal indentation when e.g. entering a tree node + float ColumnsMinSpacing; // Minimum horizontal spacing between two columns + float ScrollbarWidth; // Width of the vertical scrollbar + float GrabMinSize; // Minimum width/height of a slider or scrollbar grab + ImVec2 DisplaySafeAreaPadding; // Window positions are clamped to be visible within the display area. If you cannot see the edge of your screen (e.g. on a TV) increase the safe area padding. + ImVec4 Colors[ImGuiCol_COUNT]; + + IMGUI_API ImGuiStyle(); +}; + +// This is where your app communicate with ImGui. Call ImGui::GetIO() to access. +// Read 'Programmer guide' section in .cpp file for general usage. +struct ImGuiIO +{ + //------------------------------------------------------------------ + // Settings (fill once) // Default value: + //------------------------------------------------------------------ + + ImVec2 DisplaySize; // // Display size, in pixels. For clamping windows positions. + float DeltaTime; // = 1.0f/60.0f // Time elapsed since last frame, in seconds. + float IniSavingRate; // = 5.0f // Maximum time between saving positions/sizes to .ini file, in seconds. + const char* IniFilename; // = "imgui.ini" // Path to .ini file. NULL to disable .ini saving. + const char* LogFilename; // = "imgui_log.txt" // Path to .log file (default parameter to ImGui::LogToFile when no file is specified). + float MouseDoubleClickTime; // = 0.30f // Time for a double-click, in seconds. + float MouseDoubleClickMaxDist; // = 6.0f // Distance threshold to stay in to validate a double-click, in pixels. + float MouseDragThreshold; // = 6.0f // Distance threshold before considering we are dragging + int KeyMap[ImGuiKey_COUNT]; // // Map of indices into the KeysDown[512] entries array + void* UserData; // = NULL // Store your own data for retrieval by callbacks. + + ImFontAtlas* Fonts; // // Load and assemble one or more fonts into a single tightly packed texture. Output to Fonts array. + float FontGlobalScale; // = 1.0f // Global scale all fonts + bool FontAllowUserScaling; // = false // Allow user scaling text of individual window with CTRL+Wheel. + ImVec2 DisplayVisibleMin; // (0.0f,0.0f) // If you use DisplaySize as a virtual space larger than your screen, set DisplayVisibleMin/Max to the visible area. + ImVec2 DisplayVisibleMax; // (0.0f,0.0f) // If the values are the same, we defaults to Min=(0.0f) and Max=DisplaySize + + //------------------------------------------------------------------ + // User Functions + //------------------------------------------------------------------ + + // REQUIRED: rendering function. + // See example code if you are unsure of how to implement this. + void (*RenderDrawListsFn)(ImDrawList** const draw_lists, int count); + + // Optional: access OS clipboard + // (default to use native Win32 clipboard on Windows, otherwise uses a private clipboard. Override to access OS clipboard on other architectures) + const char* (*GetClipboardTextFn)(); + void (*SetClipboardTextFn)(const char* text); + + // Optional: override memory allocations. MemFreeFn() may be called with a NULL pointer. + // (default to posix malloc/free) + void* (*MemAllocFn)(size_t sz); + void (*MemFreeFn)(void* ptr); + + // Optional: notify OS Input Method Editor of the screen position of your cursor for text input position (e.g. when using Japanese/Chinese IME in Windows) + // (default to use native imm32 api on Windows) + void (*ImeSetInputScreenPosFn)(int x, int y); + void* ImeWindowHandle; // (Windows) Set this to your HWND to get automatic IME cursor positioning. + + //------------------------------------------------------------------ + // Input - Fill before calling NewFrame() + //------------------------------------------------------------------ + + ImVec2 MousePos; // Mouse position, in pixels (set to -1,-1 if no mouse / on another screen, etc.) + bool MouseDown[5]; // Mouse buttons. ImGui itself only uses button 0 (left button). Others buttons allows to track if mouse is being used by your application + available to user as a convenience via IsMouse** API. + float MouseWheel; // Mouse wheel: 1 unit scrolls about 5 lines text. + bool MouseDrawCursor; // Request ImGui to draw a mouse cursor for you (if you are on a platform without a mouse cursor). + bool KeyCtrl; // Keyboard modifier pressed: Control + bool KeyShift; // Keyboard modifier pressed: Shift + bool KeyAlt; // Keyboard modifier pressed: Alt + bool KeysDown[512]; // Keyboard keys that are pressed (in whatever storage order you naturally have access to keyboard data) + ImWchar InputCharacters[16+1]; // List of characters input (translated by user from keypress+keyboard state). Fill using AddInputCharacter() helper. + + // Function + IMGUI_API void AddInputCharacter(ImWchar c); // Helper to add a new character into InputCharacters[] + + //------------------------------------------------------------------ + // Output - Retrieve after calling NewFrame(), you can use them to discard inputs or hide them from the rest of your application + //------------------------------------------------------------------ + + bool WantCaptureMouse; // Mouse is hovering a window or widget is active (= ImGui will use your mouse input) + bool WantCaptureKeyboard; // Widget is active (= ImGui will use your keyboard input) + float Framerate; // Framerate estimation, in frame per second. Rolling average estimation based on IO.DeltaTime over 120 frames + int MetricsRenderVertices; // Vertices processed during last call to Render() + + //------------------------------------------------------------------ + // [Internal] ImGui will maintain those fields for you + //------------------------------------------------------------------ + + ImVec2 MousePosPrev; // Previous mouse position + ImVec2 MouseDelta; // Mouse delta. Note that this is zero if either current or previous position are negative to allow mouse enabling/disabling. + bool MouseClicked[5]; // Mouse button went from !Down to Down + ImVec2 MouseClickedPos[5]; // Position at time of clicking + float MouseClickedTime[5]; // Time of last click (used to figure out double-click) + bool MouseDoubleClicked[5]; // Has mouse button been double-clicked? + bool MouseDownOwned[5]; // Track if button was clicked inside a window. We don't request mouse capture from the application if click started outside ImGui bounds. + float MouseDownTime[5]; // Time the mouse button has been down + float MouseDragMaxDistanceSqr[5]; // Squared maximum distance of how much mouse has traveled from the click point + float KeysDownTime[512]; // Time the keyboard key has been down + + IMGUI_API ImGuiIO(); +}; + +//----------------------------------------------------------------------------- +// Helpers +//----------------------------------------------------------------------------- + +// Helper: execute a block of code once a frame only +// Convenient if you want to quickly create an UI within deep-nested code that runs multiple times every frame. +// Usage: +// IMGUI_ONCE_UPON_A_FRAME +// { +// // code block will be executed one per frame +// } +// Attention! the macro expands into 2 statement so make sure you don't use it within e.g. an if() statement without curly braces. +#define IMGUI_ONCE_UPON_A_FRAME static ImGuiOnceUponAFrame imgui_oaf##__LINE__; if (imgui_oaf##__LINE__) +struct ImGuiOnceUponAFrame +{ + ImGuiOnceUponAFrame() { RefFrame = -1; } + mutable int RefFrame; + operator bool() const { const int current_frame = ImGui::GetFrameCount(); if (RefFrame == current_frame) return false; RefFrame = current_frame; return true; } +}; + +// Helper: Parse and apply text filters. In format "aaaaa[,bbbb][,ccccc]" +struct ImGuiTextFilter +{ + struct TextRange + { + const char* b; + const char* e; + + TextRange() { b = e = NULL; } + TextRange(const char* _b, const char* _e) { b = _b; e = _e; } + const char* begin() const { return b; } + const char* end() const { return e; } + bool empty() const { return b == e; } + char front() const { return *b; } + static bool isblank(char c) { return c == ' ' || c == '\t'; } + void trim_blanks() { while (b < e && isblank(*b)) b++; while (e > b && isblank(*(e-1))) e--; } + IMGUI_API void split(char separator, ImVector& out); + }; + + char InputBuf[256]; + ImVector Filters; + int CountGrep; + + ImGuiTextFilter(const char* default_filter = ""); + void Clear() { InputBuf[0] = 0; Build(); } + void Draw(const char* label = "Filter (inc,-exc)", float width = -1.0f); // Helper calling InputText+Build + bool PassFilter(const char* val) const; + bool IsActive() const { return !Filters.empty(); } + IMGUI_API void Build(); +}; + +// Helper: Text buffer for logging/accumulating text +struct ImGuiTextBuffer +{ + ImVector Buf; + + ImGuiTextBuffer() { Buf.push_back(0); } + const char* begin() const { return &Buf.front(); } + const char* end() const { return &Buf.back(); } // Buf is zero-terminated, so end() will point on the zero-terminator + size_t size() const { return Buf.size()-1; } + bool empty() { return size() >= 1; } + void clear() { Buf.clear(); Buf.push_back(0); } + IMGUI_API void append(const char* fmt, ...); + IMGUI_API void appendv(const char* fmt, va_list args); +}; + +// Helper: Key->value storage +// - Store collapse state for a tree (Int 0/1) +// - Store color edit options (Int using values in ImGuiColorEditMode enum). +// - Custom user storage for temporary values. +// Typically you don't have to worry about this since a storage is held within each Window. +// Declare your own storage if: +// - You want to manipulate the open/close state of a particular sub-tree in your interface (tree node uses Int 0/1 to store their state). +// - You want to store custom debug data easily without adding or editing structures in your code. +struct ImGuiStorage +{ + struct Pair + { + ImGuiID key; + union { int val_i; float val_f; void* val_p; }; + Pair(ImGuiID _key, int _val_i) { key = _key; val_i = _val_i; } + Pair(ImGuiID _key, float _val_f) { key = _key; val_f = _val_f; } + Pair(ImGuiID _key, void* _val_p) { key = _key; val_p = _val_p; } + }; + ImVector Data; + + // - Get***() functions find pair, never add/allocate. Pairs are sorted so a query is O(log N) + // - Set***() functions find pair, insertion on demand if missing. + // - Sorted insertion is costly but should amortize. A typical frame shouldn't need to insert any new pair. + IMGUI_API void Clear(); + IMGUI_API int GetInt(ImGuiID key, int default_val = 0) const; + IMGUI_API void SetInt(ImGuiID key, int val); + IMGUI_API float GetFloat(ImGuiID key, float default_val = 0.0f) const; + IMGUI_API void SetFloat(ImGuiID key, float val); + IMGUI_API void* GetVoidPtr(ImGuiID key) const; // default_val is NULL + IMGUI_API void SetVoidPtr(ImGuiID key, void* val); + + // - Get***Ref() functions finds pair, insert on demand if missing, return pointer. Useful if you intend to do Get+Set. + // - References are only valid until a new value is added to the storage. Calling a Set***() function or a Get***Ref() function invalidates the pointer. + // - A typical use case where this is convenient: + // float* pvar = ImGui::GetFloatRef(key); ImGui::SliderFloat("var", pvar, 0, 100.0f); some_var += *pvar; + // - You can also use this to quickly create temporary editable values during a session of using Edit&Continue, without restarting your application. + IMGUI_API int* GetIntRef(ImGuiID key, int default_val = 0); + IMGUI_API float* GetFloatRef(ImGuiID key, float default_val = 0); + IMGUI_API void** GetVoidPtrRef(ImGuiID key, void* default_val = NULL); + + // Use on your own storage if you know only integer are being stored (open/close all tree nodes) + IMGUI_API void SetAllInt(int val); +}; + +// Shared state of InputText(), passed to callback when a ImGuiInputTextFlags_Callback* flag is used. +struct ImGuiTextEditCallbackData +{ + ImGuiInputTextFlags EventFlag; // One of ImGuiInputTextFlags_Callback* // Read-only + ImGuiInputTextFlags Flags; // What user passed to InputText() // Read-only + void* UserData; // What user passed to InputText() // Read-only + + // CharFilter event: + ImWchar EventChar; // Character input // Read-write (replace character or set to zero) + + // Completion,History,Always events: + ImGuiKey EventKey; // Key pressed (Up/Down/TAB) // Read-only + char* Buf; // Current text // Read-write (pointed data only) + size_t BufSize; // // Read-only + bool BufDirty; // Set if you modify Buf directly // Write + int CursorPos; // // Read-write + int SelectionStart; // // Read-write (== to SelectionEnd when no selection) + int SelectionEnd; // // Read-write + + // NB: calling those function loses selection. + void DeleteChars(int pos, int bytes_count); + void InsertChars(int pos, const char* text, const char* text_end = NULL); +}; + +// ImColor() is just a helper that implicity converts to either ImU32 (packed 4x1 byte) or ImVec4 (4x1 float) +// None of the ImGui API are using ImColor directly but you can use it as a convenience to pass colors in either formats. +struct ImColor +{ + ImVec4 Value; + + ImColor(int r, int g, int b, int a = 255) { Value.x = (float)r / 255.0f; Value.y = (float)g / 255.0f; Value.z = (float)b / 255.0f; Value.w = (float)a / 255.0f; } + ImColor(float r, float g, float b, float a = 1.0f) { Value.x = r; Value.y = g; Value.z = b; Value.w = a; } + ImColor(const ImVec4& col) { Value = col; } + operator ImU32() const { return ImGui::ColorConvertFloat4ToU32(Value); } + operator ImVec4() const { return Value; } + + static ImColor HSV(float h, float s, float v, float a = 1.0f) { float r,g,b; ImGui::ColorConvertHSVtoRGB(h, s, v, r, g, b); return ImColor(r,g,b,a); } +}; + +//----------------------------------------------------------------------------- +// Draw List +// Hold a series of drawing commands. The user provides a renderer for ImDrawList. +//----------------------------------------------------------------------------- + +// Draw callbacks for advanced uses. +// NB- You most likely DO NOT need to care about draw callbacks just to create your own widget or customized UI rendering (you can poke into the draw list for that) +// Draw callback are useful for example if you want to render a complex 3D scene inside a UI element. +// The expected behavior from your rendering loop is: +// if (cmd.user_callback != NULL) +// cmd.user_callback(parent_list, cmd); +// else +// RenderTriangles() +// It is up to you to decide if your rendering loop or the callback should be responsible for backup/restoring rendering state. +typedef void (*ImDrawCallback)(const ImDrawList* parent_list, const ImDrawCmd* cmd); + +// Typically, 1 command = 1 gpu draw call (unless command is a callback) +struct ImDrawCmd +{ + unsigned int vtx_count; // Number of vertices (multiple of 3) to be drawn as triangles. The vertices are stored in the callee ImDrawList's vtx_buffer[] array. + ImVec4 clip_rect; // Clipping rectangle (x1, y1, x2, y2) + ImTextureID texture_id; // User-provided texture ID. Set by user in ImfontAtlas::SetTexID() for fonts or passed to Image*() functions. Ignore if never using images or multiple fonts atlas. + ImDrawCallback user_callback; // If != NULL, call the function instead of rendering the vertices. vtx_count will be 0. clip_rect and texture_id will be set normally. + void* user_callback_data; // The draw callback code can access this. +}; + +// Vertex layout +#ifndef IMGUI_OVERRIDE_DRAWVERT_STRUCT_LAYOUT +struct ImDrawVert +{ + ImVec2 pos; + ImVec2 uv; + ImU32 col; +}; +#else +// You can change the vertex format layout by defining IMGUI_OVERRIDE_DRAWVERT_STRUCT_LAYOUT in imconfig.h +// The code expect ImVec2 pos (8 bytes), ImVec2 uv (8 bytes), ImU32 col (4 bytes), but you can re-order them or add other fields as needed to simplify integration in your engine. +// The type has to be described by the #define (you can either declare the struct or use a typedef) +IMGUI_OVERRIDE_DRAWVERT_STRUCT_LAYOUT; +#endif + +// Draw command list +// This is the low-level list of polygons that ImGui functions are filling. At the end of the frame, all command lists are passed to your ImGuiIO::RenderDrawListFn function for rendering. +// At the moment, each ImGui window contains its own ImDrawList but they could potentially be merged in the future. +// If you want to add custom rendering within a window, you can use ImGui::GetWindowDrawList() to access the current draw list and add your own primitives. +// You can interleave normal ImGui:: calls and adding primitives to the current draw list. +// All positions are in screen coordinates (0,0=top-left, 1 pixel per unit). Primitives are always added to the list and not culled (culling is done at render time and at a higher-level by ImGui:: functions). +// Note that this only gives you access to rendering polygons. If your intent is to create custom widgets and the publicly exposed functions/data aren't sufficient, you can add code in imgui_user.inl +struct ImDrawList +{ + // This is what you have to render + ImVector commands; // Commands. Typically 1 command = 1 gpu draw call. + ImVector vtx_buffer; // Vertex buffer. Each command consume ImDrawCmd::vtx_count of those + + // [Internal to ImGui] + ImVector clip_rect_stack; // [Internal] + ImVector texture_id_stack; // [Internal] + ImDrawVert* vtx_write; // [Internal] point within vtx_buffer after each add command (to avoid using the ImVector<> operators too much) + + ImDrawList() { Clear(); } + IMGUI_API void Clear(); + IMGUI_API void ClearFreeMemory(); + IMGUI_API void PushClipRect(const ImVec4& clip_rect); // Scissoring. The values are x1, y1, x2, y2. + IMGUI_API void PushClipRectFullScreen(); + IMGUI_API void PopClipRect(); + IMGUI_API void PushTextureID(const ImTextureID& texture_id); + IMGUI_API void PopTextureID(); + + // Primitives + IMGUI_API void AddLine(const ImVec2& a, const ImVec2& b, ImU32 col, float thickness = 1.0f); + IMGUI_API void AddRect(const ImVec2& a, const ImVec2& b, ImU32 col, float rounding = 0.0f, int rounding_corners = 0x0F); + IMGUI_API void AddRectFilled(const ImVec2& a, const ImVec2& b, ImU32 col, float rounding = 0.0f, int rounding_corners = 0x0F); + IMGUI_API void AddTriangleFilled(const ImVec2& a, const ImVec2& b, const ImVec2& c, ImU32 col); + IMGUI_API void AddCircle(const ImVec2& centre, float radius, ImU32 col, int num_segments = 12); + IMGUI_API void AddCircleFilled(const ImVec2& centre, float radius, ImU32 col, int num_segments = 12); + IMGUI_API void AddArcFast(const ImVec2& center, float radius, ImU32 col, int a_min_12, int a_max_12, bool filled = false, const ImVec2& third_point_offset = ImVec2(0,0)); // Angles in 0..12 range + IMGUI_API void AddText(const ImFont* font, float font_size, const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end = NULL, float wrap_width = 0.0f, const ImVec2* cpu_clip_max = NULL); + IMGUI_API void AddImage(ImTextureID user_texture_id, const ImVec2& a, const ImVec2& b, const ImVec2& uv0, const ImVec2& uv1, ImU32 col = 0xFFFFFFFF); + + // Advanced + IMGUI_API void AddCallback(ImDrawCallback callback, void* callback_data); // Your rendering function must check for 'user_callback' in ImDrawCmd and call the function instead of rendering triangles. + IMGUI_API void AddDrawCmd(); // This is useful if you need to forcefully create a new draw call (to allow for dependent rendering / blending). Otherwise primitives are merged into the same draw-call as much as possible + + // Internal helpers + IMGUI_API void PrimReserve(unsigned int vtx_count); + IMGUI_API void PrimTriangle(const ImVec2& a, const ImVec2& b, const ImVec2& c, ImU32 col); + IMGUI_API void PrimRect(const ImVec2& a, const ImVec2& b, ImU32 col); + IMGUI_API void PrimRectUV(const ImVec2& a, const ImVec2& b, const ImVec2& uv_a, const ImVec2& uv_b, ImU32 col); + IMGUI_API void PrimQuad(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, ImU32 col); + IMGUI_API void PrimLine(const ImVec2& a, const ImVec2& b, ImU32 col, float thickness = 1.0f); + IMGUI_API void UpdateClipRect(); + IMGUI_API void UpdateTextureID(); + IMGUI_API void PrimVtx(const ImVec2& pos, const ImVec2& uv, ImU32 col) { vtx_write->pos = pos; vtx_write->uv = uv; vtx_write->col = col; vtx_write++; } +}; + +// Load and rasterize multiple TTF fonts into a same texture. +// Sharing a texture for multiple fonts allows us to reduce the number of draw calls during rendering. +// We also add custom graphic data into the texture that serves for ImGui. +// 1. (Optional) Call AddFont*** functions. If you don't call any, the default font will be loaded for you. +// 2. Call GetTexDataAsAlpha8() or GetTexDataAsRGBA32() to build and retrieve pixels data. +// 3. Upload the pixels data into a texture within your graphics system. +// 4. Call SetTexID(my_tex_id); and pass the pointer/identifier to your texture. This value will be passed back to you during rendering to identify the texture. +// 5. Call ClearTexData() to free textures memory on the heap. +struct ImFontAtlas +{ + IMGUI_API ImFontAtlas(); + IMGUI_API ~ImFontAtlas(); + IMGUI_API ImFont* AddFontDefault(); + IMGUI_API ImFont* AddFontFromFileTTF(const char* filename, float size_pixels, const ImWchar* glyph_ranges = NULL, int font_no = 0); + IMGUI_API ImFont* AddFontFromMemoryTTF(void* in_ttf_data, unsigned int in_ttf_data_size, float size_pixels, const ImWchar* glyph_ranges = NULL, int font_no = 0); // Pass ownership of 'in_ttf_data' memory, will be deleted after build + IMGUI_API ImFont* AddFontFromMemoryCompressedTTF(const void* in_compressed_ttf_data, unsigned int in_compressed_ttf_data_size, float size_pixels, const ImWchar* glyph_ranges = NULL, int font_no = 0); // 'in_compressed_ttf_data' untouched and still owned by caller. compress with binary_to_compressed_c. + IMGUI_API void ClearTexData(); // Saves RAM once the texture has been copied to graphics memory. + IMGUI_API void Clear(); + + // Retrieve texture data + // User is in charge of copying the pixels into graphics memory, then call SetTextureUserID() + // After loading the texture into your graphic system, store your texture handle in 'TexID' (ignore if you aren't using multiple fonts nor images) + // RGBA32 format is provided for convenience and high compatibility, but note that all RGB pixels are white, so 75% of the memory is wasted. + // Pitch = Width * BytesPerPixels + IMGUI_API void GetTexDataAsAlpha8(unsigned char** out_pixels, int* out_width, int* out_height, int* out_bytes_per_pixel = NULL); // 1 byte per-pixel + IMGUI_API void GetTexDataAsRGBA32(unsigned char** out_pixels, int* out_width, int* out_height, int* out_bytes_per_pixel = NULL); // 4 bytes-per-pixel + IMGUI_API void SetTexID(void* id) { TexID = id; } + + // Helpers to retrieve list of common Unicode ranges (2 value per range, values are inclusive, zero-terminated list) + // (Those functions could be static but aren't so most users don't have to refer to the ImFontAtlas:: name ever if in their code; just using io.Fonts->) + IMGUI_API const ImWchar* GetGlyphRangesDefault(); // Basic Latin, Extended Latin + IMGUI_API const ImWchar* GetGlyphRangesJapanese(); // Default + Hiragana, Katakana, Half-Width, Selection of 1946 Ideographs + IMGUI_API const ImWchar* GetGlyphRangesChinese(); // Japanese + full set of about 21000 CJK Unified Ideographs + + // Members + // (Access texture data via GetTexData*() calls which will setup a default font for you.) + void* TexID; // User data to refer to the texture once it has been uploaded to user's graphic systems. It ia passed back to you during rendering. + unsigned char* TexPixelsAlpha8; // 1 component per pixel, each component is unsigned 8-bit. Total size = TexWidth * TexHeight + unsigned int* TexPixelsRGBA32; // 4 component per pixel, each component is unsigned 8-bit. Total size = TexWidth * TexHeight * 4 + int TexWidth; + int TexHeight; + ImVec2 TexUvWhitePixel; // Texture coordinates to a white pixel (part of the TexExtraData block) + ImVector Fonts; + + // Private + struct ImFontAtlasData; + ImVector InputData; // Internal data + IMGUI_API bool Build(); // Build pixels data. This is automatically for you by the GetTexData*** functions. + IMGUI_API void ClearInputData(); // Clear the input TTF data. + IMGUI_API void RenderCustomTexData(int pass, void* rects); +}; + +// TTF font loading and rendering +// ImFontAtlas automatically loads a default embedded font for you when you call GetTexDataAsAlpha8() or GetTexDataAsRGBA32(). +// Kerning isn't supported. At the moment some ImGui code does per-character CalcTextSize calls, need something more state-ful. +struct ImFont +{ + // Members: Settings + float FontSize; // // Height of characters, set during loading (don't change after loading) + float Scale; // = 1.0f // Base font scale, multiplied by the per-window font scale which you can adjust with SetFontScale() + ImVec2 DisplayOffset; // = (0.0f,0.0f) // Offset font rendering by xx pixels + ImWchar FallbackChar; // = '?' // Replacement glyph if one isn't found. Only set via SetFallbackChar() + + // Members: Runtime data + struct Glyph + { + ImWchar Codepoint; + signed short XAdvance; + signed short Width, Height; + signed short XOffset, YOffset; + float U0, V0, U1, V1; // Texture coordinates + }; + ImFontAtlas* ContainerAtlas; // What we has been loaded into + ImVector Glyphs; + const Glyph* FallbackGlyph; // == FindGlyph(FontFallbackChar) + float FallbackXAdvance; // + ImVector IndexXAdvance; // Glyphs->XAdvance directly indexable (for CalcTextSize functions which are often bottleneck in large UI) + ImVector IndexLookup; // Index glyphs by Unicode code-point + + // Methods + IMGUI_API ImFont(); + IMGUI_API ~ImFont(); + IMGUI_API void Clear(); + IMGUI_API void BuildLookupTable(); + IMGUI_API const Glyph* FindGlyph(unsigned short c) const; + IMGUI_API void SetFallbackChar(ImWchar c); + IMGUI_API bool IsLoaded() const { return ContainerAtlas != NULL; } + + // 'max_width' stops rendering after a certain width (could be turned into a 2d size). FLT_MAX to disable. + // 'wrap_width' enable automatic word-wrapping across multiple lines to fit into given width. 0.0f to disable. + IMGUI_API ImVec2 CalcTextSizeA(float size, float max_width, float wrap_width, const char* text_begin, const char* text_end = NULL, const char** remaining = NULL) const; // utf8 + IMGUI_API ImVec2 CalcTextSizeW(float size, float max_width, const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL) const; // wchar + IMGUI_API void RenderText(float size, ImVec2 pos, ImU32 col, const ImVec4& clip_rect, const char* text_begin, const char* text_end, ImDrawList* draw_list, float wrap_width = 0.0f, const ImVec2* cpu_clip_max = NULL) const; + IMGUI_API const char* CalcWordWrapPositionA(float scale, const char* text, const char* text_end, float wrap_width) const; +}; + +//---- Include imgui_user.h at the end of imgui.h +//---- So you can include code that extends ImGui using any of the types declared above. +//---- (also convenient for user to only explicitly include vanilla imgui.h) +#ifdef IMGUI_INCLUDE_IMGUI_USER_H +#include "imgui_user.h" +#endif diff --git a/testbed/imgui/stb_rect_pack.h b/testbed/imgui/stb_rect_pack.h new file mode 100644 index 00000000..eb0ef2f2 --- /dev/null +++ b/testbed/imgui/stb_rect_pack.h @@ -0,0 +1,547 @@ +// stb_rect_pack.h - v0.05 - public domain - rectangle packing +// Sean Barrett 2014 +// +// Useful for e.g. packing rectangular textures into an atlas. +// Does not do rotation. +// +// Not necessarily the awesomest packing method, but better than +// the totally naive one in stb_truetype (which is primarily what +// this is meant to replace). +// +// Has only had a few tests run, may have issues. +// +// More docs to come. +// +// No memory allocations; uses qsort() and assert() from stdlib. +// +// This library currently uses the Skyline Bottom-Left algorithm. +// +// Please note: better rectangle packers are welcome! Please +// implement them to the same API, but with a different init +// function. +// +// Version history: +// +// 0.05: added STBRP_ASSERT to allow replacing assert +// 0.04: fixed minor bug in STBRP_LARGE_RECTS support +// 0.01: initial release + +////////////////////////////////////////////////////////////////////////////// +// +// INCLUDE SECTION +// + +#ifndef STB_INCLUDE_STB_RECT_PACK_H +#define STB_INCLUDE_STB_RECT_PACK_H + +#define STB_RECT_PACK_VERSION 1 + +#ifdef STBRP_STATIC +#define STBRP_DEF static +#else +#define STBRP_DEF extern +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct stbrp_context stbrp_context; +typedef struct stbrp_node stbrp_node; +typedef struct stbrp_rect stbrp_rect; + +#ifdef STBRP_LARGE_RECTS +typedef int stbrp_coord; +#else +typedef unsigned short stbrp_coord; +#endif + +STBRP_DEF void stbrp_pack_rects (stbrp_context *context, stbrp_rect *rects, int num_rects); +// Assign packed locations to rectangles. The rectangles are of type +// 'stbrp_rect' defined below, stored in the array 'rects', and there +// are 'num_rects' many of them. +// +// Rectangles which are successfully packed have the 'was_packed' flag +// set to a non-zero value and 'x' and 'y' store the minimum location +// on each axis (i.e. bottom-left in cartesian coordinates, top-left +// if you imagine y increasing downwards). Rectangles which do not fit +// have the 'was_packed' flag set to 0. +// +// You should not try to access the 'rects' array from another thread +// while this function is running, as the function temporarily reorders +// the array while it executes. +// +// To pack into another rectangle, you need to call stbrp_init_target +// again. To continue packing into the same rectangle, you can call +// this function again. Calling this multiple times with multiple rect +// arrays will probably produce worse packing results than calling it +// a single time with the full rectangle array, but the option is +// available. + +struct stbrp_rect +{ + // reserved for your use: + int id; + + // input: + stbrp_coord w, h; + + // output: + stbrp_coord x, y; + int was_packed; // non-zero if valid packing + +}; // 16 bytes, nominally + + +STBRP_DEF void stbrp_init_target (stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes); +// Initialize a rectangle packer to: +// pack a rectangle that is 'width' by 'height' in dimensions +// using temporary storage provided by the array 'nodes', which is 'num_nodes' long +// +// You must call this function every time you start packing into a new target. +// +// There is no "shutdown" function. The 'nodes' memory must stay valid for +// the following stbrp_pack_rects() call (or calls), but can be freed after +// the call (or calls) finish. +// +// Note: to guarantee best results, either: +// 1. make sure 'num_nodes' >= 'width' +// or 2. call stbrp_allow_out_of_mem() defined below with 'allow_out_of_mem = 1' +// +// If you don't do either of the above things, widths will be quantized to multiples +// of small integers to guarantee the algorithm doesn't run out of temporary storage. +// +// If you do #2, then the non-quantized algorithm will be used, but the algorithm +// may run out of temporary storage and be unable to pack some rectangles. + +STBRP_DEF void stbrp_setup_allow_out_of_mem (stbrp_context *context, int allow_out_of_mem); +// Optionally call this function after init but before doing any packing to +// change the handling of the out-of-temp-memory scenario, described above. +// If you call init again, this will be reset to the default (false). + + +STBRP_DEF void stbrp_setup_heuristic (stbrp_context *context, int heuristic); +// Optionally select which packing heuristic the library should use. Different +// heuristics will produce better/worse results for different data sets. +// If you call init again, this will be reset to the default. + +enum +{ + STBRP_HEURISTIC_Skyline_default=0, + STBRP_HEURISTIC_Skyline_BL_sortHeight = STBRP_HEURISTIC_Skyline_default, + STBRP_HEURISTIC_Skyline_BF_sortHeight +}; + + +////////////////////////////////////////////////////////////////////////////// +// +// the details of the following structures don't matter to you, but they must +// be visible so you can handle the memory allocations for them + +struct stbrp_node +{ + stbrp_coord x,y; + stbrp_node *next; +}; + +struct stbrp_context +{ + int width; + int height; + int align; + int init_mode; + int heuristic; + int num_nodes; + stbrp_node *active_head; + stbrp_node *free_head; + stbrp_node extra[2]; // we allocate two extra nodes so optimal user-node-count is 'width' not 'width+2' +}; + +#ifdef __cplusplus +} +#endif + +#endif + +////////////////////////////////////////////////////////////////////////////// +// +// IMPLEMENTATION SECTION +// + +#ifdef STB_RECT_PACK_IMPLEMENTATION +#include + +#ifndef STBRP_ASSERT +#include +#define STBRP_ASSERT assert +#endif + +enum +{ + STBRP__INIT_skyline = 1 +}; + +STBRP_DEF void stbrp_setup_heuristic(stbrp_context *context, int heuristic) +{ + switch (context->init_mode) { + case STBRP__INIT_skyline: + STBRP_ASSERT(heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight || heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight); + context->heuristic = heuristic; + break; + default: + STBRP_ASSERT(0); + } +} + +STBRP_DEF void stbrp_setup_allow_out_of_mem(stbrp_context *context, int allow_out_of_mem) +{ + if (allow_out_of_mem) + // if it's ok to run out of memory, then don't bother aligning them; + // this gives better packing, but may fail due to OOM (even though + // the rectangles easily fit). @TODO a smarter approach would be to only + // quantize once we've hit OOM, then we could get rid of this parameter. + context->align = 1; + else { + // if it's not ok to run out of memory, then quantize the widths + // so that num_nodes is always enough nodes. + // + // I.e. num_nodes * align >= width + // align >= width / num_nodes + // align = ceil(width/num_nodes) + + context->align = (context->width + context->num_nodes-1) / context->num_nodes; + } +} + +STBRP_DEF void stbrp_init_target(stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes) +{ + int i; +#ifndef STBRP_LARGE_RECTS + STBRP_ASSERT(width <= 0xffff && height <= 0xffff); +#endif + + for (i=0; i < num_nodes-1; ++i) + nodes[i].next = &nodes[i+1]; + nodes[i].next = NULL; + context->init_mode = STBRP__INIT_skyline; + context->heuristic = STBRP_HEURISTIC_Skyline_default; + context->free_head = &nodes[0]; + context->active_head = &context->extra[0]; + context->width = width; + context->height = height; + context->num_nodes = num_nodes; + stbrp_setup_allow_out_of_mem(context, 0); + + // node 0 is the full width, node 1 is the sentinel (lets us not store width explicitly) + context->extra[0].x = 0; + context->extra[0].y = 0; + context->extra[0].next = &context->extra[1]; + context->extra[1].x = (stbrp_coord) width; +#ifdef STBRP_LARGE_RECTS + context->extra[1].y = (1<<30); +#else + context->extra[1].y = 65535; +#endif + context->extra[1].next = NULL; +} + +// find minimum y position if it starts at x1 +static int stbrp__skyline_find_min_y(stbrp_context *c, stbrp_node *first, int x0, int width, int *pwaste) +{ + (void)c; + stbrp_node *node = first; + int x1 = x0 + width; + int min_y, visited_width, waste_area; + STBRP_ASSERT(first->x <= x0); + + #if 0 + // skip in case we're past the node + while (node->next->x <= x0) + ++node; + #else + STBRP_ASSERT(node->next->x > x0); // we ended up handling this in the caller for efficiency + #endif + + STBRP_ASSERT(node->x <= x0); + + min_y = 0; + waste_area = 0; + visited_width = 0; + while (node->x < x1) { + if (node->y > min_y) { + // raise min_y higher. + // we've accounted for all waste up to min_y, + // but we'll now add more waste for everything we've visted + waste_area += visited_width * (node->y - min_y); + min_y = node->y; + // the first time through, visited_width might be reduced + if (node->x < x0) + visited_width += node->next->x - x0; + else + visited_width += node->next->x - node->x; + } else { + // add waste area + int under_width = node->next->x - node->x; + if (under_width + visited_width > width) + under_width = width - visited_width; + waste_area += under_width * (min_y - node->y); + visited_width += under_width; + } + node = node->next; + } + + *pwaste = waste_area; + return min_y; +} + +typedef struct +{ + int x,y; + stbrp_node **prev_link; +} stbrp__findresult; + +static stbrp__findresult stbrp__skyline_find_best_pos(stbrp_context *c, int width, int height) +{ + int best_waste = (1<<30), best_x, best_y = (1 << 30); + stbrp__findresult fr; + stbrp_node **prev, *node, *tail, **best = NULL; + + // align to multiple of c->align + width = (width + c->align - 1); + width -= width % c->align; + STBRP_ASSERT(width % c->align == 0); + + node = c->active_head; + prev = &c->active_head; + while (node->x + width <= c->width) { + int y,waste; + y = stbrp__skyline_find_min_y(c, node, node->x, width, &waste); + if (c->heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight) { // actually just want to test BL + // bottom left + if (y < best_y) { + best_y = y; + best = prev; + } + } else { + // best-fit + if (y + height <= c->height) { + // can only use it if it first vertically + if (y < best_y || (y == best_y && waste < best_waste)) { + best_y = y; + best_waste = waste; + best = prev; + } + } + } + prev = &node->next; + node = node->next; + } + + best_x = (best == NULL) ? 0 : (*best)->x; + + // if doing best-fit (BF), we also have to try aligning right edge to each node position + // + // e.g, if fitting + // + // ____________________ + // |____________________| + // + // into + // + // | | + // | ____________| + // |____________| + // + // then right-aligned reduces waste, but bottom-left BL is always chooses left-aligned + // + // This makes BF take about 2x the time + + if (c->heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight) { + tail = c->active_head; + node = c->active_head; + prev = &c->active_head; + // find first node that's admissible + while (tail->x < width) + tail = tail->next; + while (tail) { + int xpos = tail->x - width; + int y,waste; + STBRP_ASSERT(xpos >= 0); + // find the left position that matches this + while (node->next->x <= xpos) { + prev = &node->next; + node = node->next; + } + STBRP_ASSERT(node->next->x > xpos && node->x <= xpos); + y = stbrp__skyline_find_min_y(c, node, xpos, width, &waste); + if (y + height < c->height) { + if (y <= best_y) { + if (y < best_y || waste < best_waste || (waste==best_waste && xpos < best_x)) { + best_x = xpos; + STBRP_ASSERT(y <= best_y); + best_y = y; + best_waste = waste; + best = prev; + } + } + } + tail = tail->next; + } + } + + fr.prev_link = best; + fr.x = best_x; + fr.y = best_y; + return fr; +} + +static stbrp__findresult stbrp__skyline_pack_rectangle(stbrp_context *context, int width, int height) +{ + // find best position according to heuristic + stbrp__findresult res = stbrp__skyline_find_best_pos(context, width, height); + stbrp_node *node, *cur; + + // bail if: + // 1. it failed + // 2. the best node doesn't fit (we don't always check this) + // 3. we're out of memory + if (res.prev_link == NULL || res.y + height > context->height || context->free_head == NULL) { + res.prev_link = NULL; + return res; + } + + // on success, create new node + node = context->free_head; + node->x = (stbrp_coord) res.x; + node->y = (stbrp_coord) (res.y + height); + + context->free_head = node->next; + + // insert the new node into the right starting point, and + // let 'cur' point to the remaining nodes needing to be + // stiched back in + + cur = *res.prev_link; + if (cur->x < res.x) { + // preserve the existing one, so start testing with the next one + stbrp_node *next = cur->next; + cur->next = node; + cur = next; + } else { + *res.prev_link = node; + } + + // from here, traverse cur and free the nodes, until we get to one + // that shouldn't be freed + while (cur->next && cur->next->x <= res.x + width) { + stbrp_node *next = cur->next; + // move the current node to the free list + cur->next = context->free_head; + context->free_head = cur; + cur = next; + } + + // stitch the list back in + node->next = cur; + + if (cur->x < res.x + width) + cur->x = (stbrp_coord) (res.x + width); + +#ifdef _DEBUG + cur = context->active_head; + while (cur->x < context->width) { + STBRP_ASSERT(cur->x < cur->next->x); + cur = cur->next; + } + STBRP_ASSERT(cur->next == NULL); + + { + stbrp_node *L1 = NULL, *L2 = NULL; + int count=0; + cur = context->active_head; + while (cur) { + L1 = cur; + cur = cur->next; + ++count; + } + cur = context->free_head; + while (cur) { + L2 = cur; + cur = cur->next; + ++count; + } + STBRP_ASSERT(count == context->num_nodes+2); + } +#endif + + return res; +} + +static int rect_height_compare(const void *a, const void *b) +{ + stbrp_rect *p = (stbrp_rect *) a; + stbrp_rect *q = (stbrp_rect *) b; + if (p->h > q->h) + return -1; + if (p->h < q->h) + return 1; + return (p->w > q->w) ? -1 : (p->w < q->w); +} + +static int rect_width_compare(const void *a, const void *b) +{ + stbrp_rect *p = (stbrp_rect *) a; + stbrp_rect *q = (stbrp_rect *) b; + if (p->w > q->w) + return -1; + if (p->w < q->w) + return 1; + return (p->h > q->h) ? -1 : (p->h < q->h); +} + +static int rect_original_order(const void *a, const void *b) +{ + stbrp_rect *p = (stbrp_rect *) a; + stbrp_rect *q = (stbrp_rect *) b; + return (p->was_packed < q->was_packed) ? -1 : (p->was_packed > q->was_packed); +} + +#ifdef STBRP_LARGE_RECTS +#define STBRP__MAXVAL 0xffffffff +#else +#define STBRP__MAXVAL 0xffff +#endif + +STBRP_DEF void stbrp_pack_rects(stbrp_context *context, stbrp_rect *rects, int num_rects) +{ + int i; + + // we use the 'was_packed' field internally to allow sorting/unsorting + for (i=0; i < num_rects; ++i) { + rects[i].was_packed = i; + #ifndef STBRP_LARGE_RECTS + STBRP_ASSERT(rects[i].w <= 0xffff && rects[i].h <= 0xffff); + #endif + } + + // sort according to heuristic + qsort(rects, num_rects, sizeof(rects[0]), rect_height_compare); + + for (i=0; i < num_rects; ++i) { + stbrp__findresult fr = stbrp__skyline_pack_rectangle(context, rects[i].w, rects[i].h); + if (fr.prev_link) { + rects[i].x = (stbrp_coord) fr.x; + rects[i].y = (stbrp_coord) fr.y; + } else { + rects[i].x = rects[i].y = STBRP__MAXVAL; + } + } + + // unsort + qsort(rects, num_rects, sizeof(rects[0]), rect_original_order); + + // set was_packed flags + for (i=0; i < num_rects; ++i) + rects[i].was_packed = !(rects[i].x == STBRP__MAXVAL && rects[i].y == STBRP__MAXVAL); +} +#endif diff --git a/testbed/imgui/stb_textedit.h b/testbed/imgui/stb_textedit.h new file mode 100644 index 00000000..5aa79f02 --- /dev/null +++ b/testbed/imgui/stb_textedit.h @@ -0,0 +1,1254 @@ +// stb_textedit.h - v1.4 - public domain - Sean Barrett +// Development of this library was sponsored by RAD Game Tools +// +// This C header file implements the guts of a multi-line text-editing +// widget; you implement display, word-wrapping, and low-level string +// insertion/deletion, and stb_textedit will map user inputs into +// insertions & deletions, plus updates to the cursor position, +// selection state, and undo state. +// +// It is intended for use in games and other systems that need to build +// their own custom widgets and which do not have heavy text-editing +// requirements (this library is not recommended for use for editing large +// texts, as its performance does not scale and it has limited undo). +// +// Non-trivial behaviors are modelled after Windows text controls. +// +// +// LICENSE +// +// This software has been placed in the public domain by its author. +// Where that dedication is not recognized, you are granted a perpetual, +// irrevocable license to copy and modify this file as you see fit. +// +// +// DEPENDENCIES +// +// Uses the C runtime function 'memmove'. Uses no other functions. +// Performs no runtime allocations. +// +// +// VERSION HISTORY +// +// 1.4 (2014-08-17) fix signed/unsigned warnings +// 1.3 (2014-06-19) fix mouse clicking to round to nearest char boundary +// 1.2 (2014-05-27) fix some RAD types that had crept into the new code +// 1.1 (2013-12-15) move-by-word (requires STB_TEXTEDIT_IS_SPACE ) +// 1.0 (2012-07-26) improve documentation, initial public release +// 0.3 (2012-02-24) bugfixes, single-line mode; insert mode +// 0.2 (2011-11-28) fixes to undo/redo +// 0.1 (2010-07-08) initial version +// +// ADDITIONAL CONTRIBUTORS +// +// Ulf Winklemann: move-by-word in 1.1 +// Scott Graham: mouse selection bugfix in 1.3 +// +// USAGE +// +// This file behaves differently depending on what symbols you define +// before including it. +// +// +// Header-file mode: +// +// If you do not define STB_TEXTEDIT_IMPLEMENTATION before including this, +// it will operate in "header file" mode. In this mode, it declares a +// single public symbol, STB_TexteditState, which encapsulates the current +// state of a text widget (except for the string, which you will store +// separately). +// +// To compile in this mode, you must define STB_TEXTEDIT_CHARTYPE to a +// primitive type that defines a single character (e.g. char, wchar_t, etc). +// +// To save space or increase undo-ability, you can optionally define the +// following things that are used by the undo system: +// +// STB_TEXTEDIT_POSITIONTYPE small int type encoding a valid cursor position +// STB_TEXTEDIT_UNDOSTATECOUNT the number of undo states to allow +// STB_TEXTEDIT_UNDOCHARCOUNT the number of characters to store in the undo buffer +// +// If you don't define these, they are set to permissive types and +// moderate sizes. The undo system does no memory allocations, so +// it grows STB_TexteditState by the worst-case storage which is (in bytes): +// +// [4 + sizeof(STB_TEXTEDIT_POSITIONTYPE)] * STB_TEXTEDIT_UNDOSTATE_COUNT +// + sizeof(STB_TEXTEDIT_CHARTYPE) * STB_TEXTEDIT_UNDOCHAR_COUNT +// +// +// Implementation mode: +// +// If you define STB_TEXTEDIT_IMPLEMENTATION before including this, it +// will compile the implementation of the text edit widget, depending +// on a large number of symbols which must be defined before the include. +// +// The implementation is defined only as static functions. You will then +// need to provide your own APIs in the same file which will access the +// static functions. +// +// The basic concept is that you provide a "string" object which +// behaves like an array of characters. stb_textedit uses indices to +// refer to positions in the string, implicitly representing positions +// in the displayed textedit. This is true for both plain text and +// rich text; even with rich text stb_truetype interacts with your +// code as if there was an array of all the displayed characters. +// +// Symbols that must be the same in header-file and implementation mode: +// +// STB_TEXTEDIT_CHARTYPE the character type +// STB_TEXTEDIT_POSITIONTYPE small type that a valid cursor position +// STB_TEXTEDIT_UNDOSTATECOUNT the number of undo states to allow +// STB_TEXTEDIT_UNDOCHARCOUNT the number of characters to store in the undo buffer +// +// Symbols you must define for implementation mode: +// +// STB_TEXTEDIT_STRING the type of object representing a string being edited, +// typically this is a wrapper object with other data you need +// +// STB_TEXTEDIT_STRINGLEN(obj) the length of the string (ideally O(1)) +// STB_TEXTEDIT_LAYOUTROW(&r,obj,n) returns the results of laying out a line of characters +// starting from character #n (see discussion below) +// STB_TEXTEDIT_GETWIDTH(obj,n,i) returns the pixel delta from the xpos of the i'th character +// to the xpos of the i+1'th char for a line of characters +// starting at character #n (i.e. accounts for kerning +// with previous char) +// STB_TEXTEDIT_KEYTOTEXT(k) maps a keyboard input to an insertable character +// (return type is int, -1 means not valid to insert) +// STB_TEXTEDIT_GETCHAR(obj,i) returns the i'th character of obj, 0-based +// STB_TEXTEDIT_NEWLINE the character returned by _GETCHAR() we recognize +// as manually wordwrapping for end-of-line positioning +// +// STB_TEXTEDIT_DELETECHARS(obj,i,n) delete n characters starting at i +// STB_TEXTEDIT_INSERTCHARS(obj,i,c*,n) insert n characters at i (pointed to by STB_TEXTEDIT_CHARTYPE*) +// +// STB_TEXTEDIT_K_SHIFT a power of two that is or'd in to a keyboard input to represent the shift key +// +// STB_TEXTEDIT_K_LEFT keyboard input to move cursor left +// STB_TEXTEDIT_K_RIGHT keyboard input to move cursor right +// STB_TEXTEDIT_K_UP keyboard input to move cursor up +// STB_TEXTEDIT_K_DOWN keyboard input to move cursor down +// STB_TEXTEDIT_K_LINESTART keyboard input to move cursor to start of line // e.g. HOME +// STB_TEXTEDIT_K_LINEEND keyboard input to move cursor to end of line // e.g. END +// STB_TEXTEDIT_K_TEXTSTART keyboard input to move cursor to start of text // e.g. ctrl-HOME +// STB_TEXTEDIT_K_TEXTEND keyboard input to move cursor to end of text // e.g. ctrl-END +// STB_TEXTEDIT_K_DELETE keyboard input to delete selection or character under cursor +// STB_TEXTEDIT_K_BACKSPACE keyboard input to delete selection or character left of cursor +// STB_TEXTEDIT_K_UNDO keyboard input to perform undo +// STB_TEXTEDIT_K_REDO keyboard input to perform redo +// +// Optional: +// STB_TEXTEDIT_K_INSERT keyboard input to toggle insert mode +// STB_TEXTEDIT_IS_SPACE(ch) true if character is whitespace (e.g. 'isspace'), +// required for WORDLEFT/WORDRIGHT +// STB_TEXTEDIT_K_WORDLEFT keyboard input to move cursor left one word // e.g. ctrl-LEFT +// STB_TEXTEDIT_K_WORDRIGHT keyboard input to move cursor right one word // e.g. ctrl-RIGHT +// +// Todo: +// STB_TEXTEDIT_K_PGUP keyboard input to move cursor up a page +// STB_TEXTEDIT_K_PGDOWN keyboard input to move cursor down a page +// +// Keyboard input must be encoded as a single integer value; e.g. a character code +// and some bitflags that represent shift states. to simplify the interface, SHIFT must +// be a bitflag, so we can test the shifted state of cursor movements to allow selection, +// i.e. (STB_TEXTED_K_RIGHT|STB_TEXTEDIT_K_SHIFT) should be shifted right-arrow. +// +// You can encode other things, such as CONTROL or ALT, in additional bits, and +// then test for their presence in e.g. STB_TEXTEDIT_K_WORDLEFT. For example, +// my Windows implementations add an additional CONTROL bit, and an additional KEYDOWN +// bit. Then all of the STB_TEXTEDIT_K_ values bitwise-or in the KEYDOWN bit, +// and I pass both WM_KEYDOWN and WM_CHAR events to the "key" function in the +// API below. The control keys will only match WM_KEYDOWN events because of the +// keydown bit I add, and STB_TEXTEDIT_KEYTOTEXT only tests for the KEYDOWN +// bit so it only decodes WM_CHAR events. +// +// STB_TEXTEDIT_LAYOUTROW returns information about the shape of one displayed +// row of characters assuming they start on the i'th character--the width and +// the height and the number of characters consumed. This allows this library +// to traverse the entire layout incrementally. You need to compute word-wrapping +// here. +// +// Each textfield keeps its own insert mode state, which is not how normal +// applications work. To keep an app-wide insert mode, update/copy the +// "insert_mode" field of STB_TexteditState before/after calling API functions. +// +// API +// +// void stb_textedit_initialize_state(STB_TexteditState *state, int is_single_line) +// +// void stb_textedit_click(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, float x, float y) +// void stb_textedit_drag(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, float x, float y) +// int stb_textedit_cut(STB_TEXTEDIT_STRING *str, STB_TexteditState *state) +// int stb_textedit_paste(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXTEDIT_CHARTYPE *text, int len) +// void stb_textedit_key(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int key) +// +// Each of these functions potentially updates the string and updates the +// state. +// +// initialize_state: +// set the textedit state to a known good default state when initially +// constructing the textedit. +// +// click: +// call this with the mouse x,y on a mouse down; it will update the cursor +// and reset the selection start/end to the cursor point. the x,y must +// be relative to the text widget, with (0,0) being the top left. +// +// drag: +// call this with the mouse x,y on a mouse drag/up; it will update the +// cursor and the selection end point +// +// cut: +// call this to delete the current selection; returns true if there was +// one. you should FIRST copy the current selection to the system paste buffer. +// (To copy, just copy the current selection out of the string yourself.) +// +// paste: +// call this to paste text at the current cursor point or over the current +// selection if there is one. +// +// key: +// call this for keyboard inputs sent to the textfield. you can use it +// for "key down" events or for "translated" key events. if you need to +// do both (as in Win32), or distinguish Unicode characters from control +// inputs, set a high bit to distinguish the two; then you can define the +// various definitions like STB_TEXTEDIT_K_LEFT have the is-key-event bit +// set, and make STB_TEXTEDIT_KEYTOCHAR check that the is-key-event bit is +// clear. +// +// When rendering, you can read the cursor position and selection state from +// the STB_TexteditState. +// +// +// Notes: +// +// This is designed to be usable in IMGUI, so it allows for the possibility of +// running in an IMGUI that has NOT cached the multi-line layout. For this +// reason, it provides an interface that is compatible with computing the +// layout incrementally--we try to make sure we make as few passes through +// as possible. (For example, to locate the mouse pointer in the text, we +// could define functions that return the X and Y positions of characters +// and binary search Y and then X, but if we're doing dynamic layout this +// will run the layout algorithm many times, so instead we manually search +// forward in one pass. Similar logic applies to e.g. up-arrow and +// down-arrow movement.) +// +// If it's run in a widget that *has* cached the layout, then this is less +// efficient, but it's not horrible on modern computers. But you wouldn't +// want to edit million-line files with it. + + +//////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////// +//// +//// Header-file mode +//// +//// + +#ifndef INCLUDE_STB_TEXTEDIT_H +#define INCLUDE_STB_TEXTEDIT_H + +//////////////////////////////////////////////////////////////////////// +// +// STB_TexteditState +// +// Definition of STB_TexteditState which you should store +// per-textfield; it includes cursor position, selection state, +// and undo state. +// + +#ifndef STB_TEXTEDIT_UNDOSTATECOUNT +#define STB_TEXTEDIT_UNDOSTATECOUNT 99 +#endif +#ifndef STB_TEXTEDIT_UNDOCHARCOUNT +#define STB_TEXTEDIT_UNDOCHARCOUNT 999 +#endif +#ifndef STB_TEXTEDIT_CHARTYPE +#define STB_TEXTEDIT_CHARTYPE int +#endif +#ifndef STB_TEXTEDIT_POSITIONTYPE +#define STB_TEXTEDIT_POSITIONTYPE int +#endif + +typedef struct +{ + // private data + STB_TEXTEDIT_POSITIONTYPE where; + short insert_length; + short delete_length; + short char_storage; +} StbUndoRecord; + +typedef struct +{ + // private data + StbUndoRecord undo_rec [STB_TEXTEDIT_UNDOSTATECOUNT]; + STB_TEXTEDIT_CHARTYPE undo_char[STB_TEXTEDIT_UNDOCHARCOUNT]; + short undo_point, redo_point; + short undo_char_point, redo_char_point; +} StbUndoState; + +typedef struct +{ + ///////////////////// + // + // public data + // + + int cursor; + // position of the text cursor within the string + + int select_start; // selection start point + int select_end; + // selection start and end point in characters; if equal, no selection. + // note that start may be less than or greater than end (e.g. when + // dragging the mouse, start is where the initial click was, and you + // can drag in either direction) + + unsigned char insert_mode; + // each textfield keeps its own insert mode state. to keep an app-wide + // insert mode, copy this value in/out of the app state + + ///////////////////// + // + // private data + // + unsigned char cursor_at_end_of_line; // not implemented yet + unsigned char initialized; + unsigned char has_preferred_x; + unsigned char single_line; + unsigned char padding1, padding2, padding3; + float preferred_x; // this determines where the cursor up/down tries to seek to along x + StbUndoState undostate; +} STB_TexteditState; + + +//////////////////////////////////////////////////////////////////////// +// +// StbTexteditRow +// +// Result of layout query, used by stb_textedit to determine where +// the text in each row is. + +// result of layout query +typedef struct +{ + float x0,x1; // starting x location, end x location (allows for align=right, etc) + float baseline_y_delta; // position of baseline relative to previous row's baseline + float ymin,ymax; // height of row above and below baseline + int num_chars; +} StbTexteditRow; +#endif //INCLUDE_STB_TEXTEDIT_H + + +//////////////////////////////////////////////////////////////////////////// +//////////////////////////////////////////////////////////////////////////// +//// +//// Implementation mode +//// +//// + + +// implementation isn't include-guarded, since it might have indirectly +// included just the "header" portion +#ifdef STB_TEXTEDIT_IMPLEMENTATION + +#include // memmove + + +///////////////////////////////////////////////////////////////////////////// +// +// Mouse input handling +// + +// traverse the layout to locate the nearest character to a display position +static int stb_text_locate_coord(STB_TEXTEDIT_STRING *str, float x, float y) +{ + StbTexteditRow r; + int n = STB_TEXTEDIT_STRINGLEN(str); + float base_y = 0, prev_x; + int i=0, k; + + if (y < 0) + return 0; + + r.x0 = r.x1 = 0; + r.ymin = r.ymax = 0; + r.num_chars = 0; + + // search rows to find one that straddles 'y' + while (i < n) { + STB_TEXTEDIT_LAYOUTROW(&r, str, i); + if (r.num_chars <= 0) + return n; + + if (y < base_y + r.ymax) + break; + + i += r.num_chars; + base_y += r.baseline_y_delta; + } + + // below all text, return 'after' last character + if (i >= n) + return n; + + // check if it's before the beginning of the line + if (x < r.x0) + return i; + + // check if it's before the end of the line + if (x < r.x1) { + // search characters in row for one that straddles 'x' + k = i; + prev_x = r.x0; + for (i=0; i < r.num_chars; ++i) { + float w = STB_TEXTEDIT_GETWIDTH(str, k, i); + if (x < prev_x+w) { + if (x < prev_x+w/2) + return k+i; + else + return k+i+1; + } + prev_x += w; + } + // shouldn't happen, but if it does, fall through to end-of-line case + } + + // if the last character is a newline, return that. otherwise return 'after' the last character + if (STB_TEXTEDIT_GETCHAR(str, i+r.num_chars-1) == STB_TEXTEDIT_NEWLINE) + return i+r.num_chars-1; + else + return i+r.num_chars; +} + +// API click: on mouse down, move the cursor to the clicked location, and reset the selection +static void stb_textedit_click(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, float x, float y) +{ + state->cursor = stb_text_locate_coord(str, x, y); + state->select_start = state->cursor; + state->select_end = state->cursor; + state->has_preferred_x = 0; +} + +// API drag: on mouse drag, move the cursor and selection endpoint to the clicked location +static void stb_textedit_drag(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, float x, float y) +{ + int p = stb_text_locate_coord(str, x, y); + state->cursor = state->select_end = p; +} + +///////////////////////////////////////////////////////////////////////////// +// +// Keyboard input handling +// + +// forward declarations +static void stb_text_undo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state); +static void stb_text_redo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state); +static void stb_text_makeundo_delete(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int length); +static void stb_text_makeundo_insert(STB_TexteditState *state, int where, int length); +static void stb_text_makeundo_replace(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int old_length, int new_length); + +typedef struct +{ + float x,y; // position of n'th character + float height; // height of line + int first_char, length; // first char of row, and length + int prev_first; // first char of previous row +} StbFindState; + +// find the x/y location of a character, and remember info about the previous row in +// case we get a move-up event (for page up, we'll have to rescan) +static void stb_textedit_find_charpos(StbFindState *find, STB_TEXTEDIT_STRING *str, int n, int single_line) +{ + StbTexteditRow r; + int prev_start = 0; + int z = STB_TEXTEDIT_STRINGLEN(str); + int i=0, first; + + if (n == z) { + // if it's at the end, then find the last line -- simpler than trying to + // explicitly handle this case in the regular code + if (single_line) { + STB_TEXTEDIT_LAYOUTROW(&r, str, 0); + find->y = 0; + find->first_char = 0; + find->length = z; + find->height = r.ymax - r.ymin; + find->x = r.x1; + } else { + find->y = 0; + find->x = 0; + find->height = 1; + while (i < z) { + STB_TEXTEDIT_LAYOUTROW(&r, str, i); + prev_start = i; + i += r.num_chars; + } + find->first_char = i; + find->length = 0; + find->prev_first = prev_start; + } + return; + } + + // search rows to find the one that straddles character n + find->y = 0; + + for(;;) { + STB_TEXTEDIT_LAYOUTROW(&r, str, i); + if (n < i + r.num_chars) + break; + prev_start = i; + i += r.num_chars; + find->y += r.baseline_y_delta; + } + + find->first_char = first = i; + find->length = r.num_chars; + find->height = r.ymax - r.ymin; + find->prev_first = prev_start; + + // now scan to find xpos + find->x = r.x0; + i = 0; + for (i=0; first+i < n; ++i) + find->x += STB_TEXTEDIT_GETWIDTH(str, first, i); +} + +#define STB_TEXT_HAS_SELECTION(s) ((s)->select_start != (s)->select_end) + +// make the selection/cursor state valid if client altered the string +static void stb_textedit_clamp(STB_TEXTEDIT_STRING *str, STB_TexteditState *state) +{ + int n = STB_TEXTEDIT_STRINGLEN(str); + if (STB_TEXT_HAS_SELECTION(state)) { + if (state->select_start > n) state->select_start = n; + if (state->select_end > n) state->select_end = n; + // if clamping forced them to be equal, move the cursor to match + if (state->select_start == state->select_end) + state->cursor = state->select_start; + } + if (state->cursor > n) state->cursor = n; +} + +// delete characters while updating undo +static void stb_textedit_delete(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int len) +{ + stb_text_makeundo_delete(str, state, where, len); + STB_TEXTEDIT_DELETECHARS(str, where, len); + state->has_preferred_x = 0; +} + +// delete the section +static void stb_textedit_delete_selection(STB_TEXTEDIT_STRING *str, STB_TexteditState *state) +{ + stb_textedit_clamp(str, state); + if (STB_TEXT_HAS_SELECTION(state)) { + if (state->select_start < state->select_end) { + stb_textedit_delete(str, state, state->select_start, state->select_end - state->select_start); + state->select_end = state->cursor = state->select_start; + } else { + stb_textedit_delete(str, state, state->select_end, state->select_start - state->select_end); + state->select_start = state->cursor = state->select_end; + } + state->has_preferred_x = 0; + } +} + +// canoncialize the selection so start <= end +static void stb_textedit_sortselection(STB_TexteditState *state) +{ + if (state->select_end < state->select_start) { + int temp = state->select_end; + state->select_end = state->select_start; + state->select_start = temp; + } +} + +// move cursor to first character of selection +static void stb_textedit_move_to_first(STB_TexteditState *state) +{ + if (STB_TEXT_HAS_SELECTION(state)) { + stb_textedit_sortselection(state); + state->cursor = state->select_start; + state->select_end = state->select_start; + state->has_preferred_x = 0; + } +} + +// move cursor to last character of selection +static void stb_textedit_move_to_last(STB_TEXTEDIT_STRING *str, STB_TexteditState *state) +{ + if (STB_TEXT_HAS_SELECTION(state)) { + stb_textedit_sortselection(state); + stb_textedit_clamp(str, state); + state->cursor = state->select_end; + state->select_start = state->select_end; + state->has_preferred_x = 0; + } +} + +#ifdef STB_TEXTEDIT_IS_SPACE +static int is_word_boundary( STB_TEXTEDIT_STRING *_str, int _idx ) +{ + return _idx > 0 ? (STB_TEXTEDIT_IS_SPACE( STB_TEXTEDIT_GETCHAR(_str,_idx-1) ) && !STB_TEXTEDIT_IS_SPACE( STB_TEXTEDIT_GETCHAR(_str, _idx) ) ) : 1; +} + +static int stb_textedit_move_to_word_previous( STB_TEXTEDIT_STRING *_str, STB_TexteditState *_state ) +{ + int c = _state->cursor - 1; + while( c >= 0 && !is_word_boundary( _str, c ) ) + --c; + + if( c < 0 ) + c = 0; + + return c; +} + +static int stb_textedit_move_to_word_next( STB_TEXTEDIT_STRING *_str, STB_TexteditState *_state ) +{ + const int len = STB_TEXTEDIT_STRINGLEN(_str); + int c = _state->cursor+1; + while( c < len && !is_word_boundary( _str, c ) ) + ++c; + + if( c > len ) + c = len; + + return c; +} +#endif + +// update selection and cursor to match each other +static void stb_textedit_prep_selection_at_cursor(STB_TexteditState *state) +{ + if (!STB_TEXT_HAS_SELECTION(state)) + state->select_start = state->select_end = state->cursor; + else + state->cursor = state->select_end; +} + +// API cut: delete selection +static int stb_textedit_cut(STB_TEXTEDIT_STRING *str, STB_TexteditState *state) +{ + if (STB_TEXT_HAS_SELECTION(state)) { + stb_textedit_delete_selection(str,state); // implicity clamps + state->has_preferred_x = 0; + return 1; + } + return 0; +} + +// API paste: replace existing selection with passed-in text +static int stb_textedit_paste(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, STB_TEXTEDIT_CHARTYPE const *ctext, int len) +{ + STB_TEXTEDIT_CHARTYPE *text = (STB_TEXTEDIT_CHARTYPE *) ctext; + // if there's a selection, the paste should delete it + stb_textedit_clamp(str, state); + stb_textedit_delete_selection(str,state); + // try to insert the characters + if (STB_TEXTEDIT_INSERTCHARS(str, state->cursor, text, len)) { + stb_text_makeundo_insert(state, state->cursor, len); + state->cursor += len; + state->has_preferred_x = 0; + return 1; + } + // remove the undo since we didn't actually insert the characters + if (state->undostate.undo_point) + --state->undostate.undo_point; + return 0; +} + +// API key: process a keyboard input +static void stb_textedit_key(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int key) +{ +retry: + switch (key) { + default: { + int c = STB_TEXTEDIT_KEYTOTEXT(key); + if (c > 0) { + STB_TEXTEDIT_CHARTYPE ch = (STB_TEXTEDIT_CHARTYPE) c; + + // can't add newline in single-line mode + if (c == '\n' && state->single_line) + break; + + if (state->insert_mode && !STB_TEXT_HAS_SELECTION(state) && state->cursor < STB_TEXTEDIT_STRINGLEN(str)) { + stb_text_makeundo_replace(str, state, state->cursor, 1, 1); + STB_TEXTEDIT_DELETECHARS(str, state->cursor, 1); + if (STB_TEXTEDIT_INSERTCHARS(str, state->cursor, &ch, 1)) { + ++state->cursor; + state->has_preferred_x = 0; + } + } else { + stb_textedit_delete_selection(str,state); // implicity clamps + if (STB_TEXTEDIT_INSERTCHARS(str, state->cursor, &ch, 1)) { + stb_text_makeundo_insert(state, state->cursor, 1); + ++state->cursor; + state->has_preferred_x = 0; + } + } + } + break; + } + +#ifdef STB_TEXTEDIT_K_INSERT + case STB_TEXTEDIT_K_INSERT: + state->insert_mode = !state->insert_mode; + break; +#endif + + case STB_TEXTEDIT_K_UNDO: + stb_text_undo(str, state); + state->has_preferred_x = 0; + break; + + case STB_TEXTEDIT_K_REDO: + stb_text_redo(str, state); + state->has_preferred_x = 0; + break; + + case STB_TEXTEDIT_K_LEFT: + // if currently there's a selection, move cursor to start of selection + if (STB_TEXT_HAS_SELECTION(state)) + stb_textedit_move_to_first(state); + else + if (state->cursor > 0) + --state->cursor; + state->has_preferred_x = 0; + break; + + case STB_TEXTEDIT_K_RIGHT: + // if currently there's a selection, move cursor to end of selection + if (STB_TEXT_HAS_SELECTION(state)) + stb_textedit_move_to_last(str, state); + else + ++state->cursor; + stb_textedit_clamp(str, state); + state->has_preferred_x = 0; + break; + + case STB_TEXTEDIT_K_LEFT | STB_TEXTEDIT_K_SHIFT: + stb_textedit_clamp(str, state); + stb_textedit_prep_selection_at_cursor(state); + // move selection left + if (state->select_end > 0) + --state->select_end; + state->cursor = state->select_end; + state->has_preferred_x = 0; + break; + +#ifdef STB_TEXTEDIT_IS_SPACE + case STB_TEXTEDIT_K_WORDLEFT: + if (STB_TEXT_HAS_SELECTION(state)) + stb_textedit_move_to_first(state); + else { + state->cursor = stb_textedit_move_to_word_previous(str, state); + stb_textedit_clamp( str, state ); + } + break; + + case STB_TEXTEDIT_K_WORDRIGHT: + if (STB_TEXT_HAS_SELECTION(state)) + stb_textedit_move_to_last(str, state); + else { + state->cursor = stb_textedit_move_to_word_next(str, state); + stb_textedit_clamp( str, state ); + } + break; + + case STB_TEXTEDIT_K_WORDLEFT | STB_TEXTEDIT_K_SHIFT: + if( !STB_TEXT_HAS_SELECTION( state ) ) + stb_textedit_prep_selection_at_cursor(state); + + state->cursor = stb_textedit_move_to_word_previous(str, state); + state->select_end = state->cursor; + + stb_textedit_clamp( str, state ); + break; + + case STB_TEXTEDIT_K_WORDRIGHT | STB_TEXTEDIT_K_SHIFT: + if( !STB_TEXT_HAS_SELECTION( state ) ) + stb_textedit_prep_selection_at_cursor(state); + + state->cursor = stb_textedit_move_to_word_next(str, state); + state->select_end = state->cursor; + + stb_textedit_clamp( str, state ); + break; +#endif + + case STB_TEXTEDIT_K_RIGHT | STB_TEXTEDIT_K_SHIFT: + stb_textedit_prep_selection_at_cursor(state); + // move selection right + ++state->select_end; + stb_textedit_clamp(str, state); + state->cursor = state->select_end; + state->has_preferred_x = 0; + break; + + case STB_TEXTEDIT_K_DOWN: + case STB_TEXTEDIT_K_DOWN | STB_TEXTEDIT_K_SHIFT: { + StbFindState find; + StbTexteditRow row; + int i, sel = (key & STB_TEXTEDIT_K_SHIFT) != 0; + + if (state->single_line) { + // on windows, up&down in single-line behave like left&right + key = STB_TEXTEDIT_K_RIGHT | (key & STB_TEXTEDIT_K_SHIFT); + goto retry; + } + + if (sel) + stb_textedit_prep_selection_at_cursor(state); + else if (STB_TEXT_HAS_SELECTION(state)) + stb_textedit_move_to_last(str,state); + + // compute current position of cursor point + stb_textedit_clamp(str, state); + stb_textedit_find_charpos(&find, str, state->cursor, state->single_line); + + // now find character position down a row + if (find.length) { + float goal_x = state->has_preferred_x ? state->preferred_x : find.x; + float x; + int start = find.first_char + find.length; + state->cursor = start; + STB_TEXTEDIT_LAYOUTROW(&row, str, state->cursor); + x = row.x0; + for (i=0; i < row.num_chars; ++i) { + float dx = STB_TEXTEDIT_GETWIDTH(str, start, i); + #ifdef STB_TEXTEDIT_GETWIDTH_NEWLINE + if (dx == STB_TEXTEDIT_GETWIDTH_NEWLINE) + break; + #endif + x += dx; + if (x > goal_x) + break; + ++state->cursor; + } + stb_textedit_clamp(str, state); + + state->has_preferred_x = 1; + state->preferred_x = goal_x; + + if (sel) + state->select_end = state->cursor; + } + break; + } + + case STB_TEXTEDIT_K_UP: + case STB_TEXTEDIT_K_UP | STB_TEXTEDIT_K_SHIFT: { + StbFindState find; + StbTexteditRow row; + int i, sel = (key & STB_TEXTEDIT_K_SHIFT) != 0; + + if (state->single_line) { + // on windows, up&down become left&right + key = STB_TEXTEDIT_K_LEFT | (key & STB_TEXTEDIT_K_SHIFT); + goto retry; + } + + if (sel) + stb_textedit_prep_selection_at_cursor(state); + else if (STB_TEXT_HAS_SELECTION(state)) + stb_textedit_move_to_first(state); + + // compute current position of cursor point + stb_textedit_clamp(str, state); + stb_textedit_find_charpos(&find, str, state->cursor, state->single_line); + + // can only go up if there's a previous row + if (find.prev_first != find.first_char) { + // now find character position up a row + float goal_x = state->has_preferred_x ? state->preferred_x : find.x; + float x; + state->cursor = find.prev_first; + STB_TEXTEDIT_LAYOUTROW(&row, str, state->cursor); + x = row.x0; + for (i=0; i < row.num_chars; ++i) { + float dx = STB_TEXTEDIT_GETWIDTH(str, find.prev_first, i); + #ifdef STB_TEXTEDIT_GETWIDTH_NEWLINE + if (dx == STB_TEXTEDIT_GETWIDTH_NEWLINE) + break; + #endif + x += dx; + if (x > goal_x) + break; + ++state->cursor; + } + stb_textedit_clamp(str, state); + + state->has_preferred_x = 1; + state->preferred_x = goal_x; + + if (sel) + state->select_end = state->cursor; + } + break; + } + + case STB_TEXTEDIT_K_DELETE: + case STB_TEXTEDIT_K_DELETE | STB_TEXTEDIT_K_SHIFT: + if (STB_TEXT_HAS_SELECTION(state)) + stb_textedit_delete_selection(str, state); + else { + int n = STB_TEXTEDIT_STRINGLEN(str); + if (state->cursor < n) + stb_textedit_delete(str, state, state->cursor, 1); + } + state->has_preferred_x = 0; + break; + + case STB_TEXTEDIT_K_BACKSPACE: + case STB_TEXTEDIT_K_BACKSPACE | STB_TEXTEDIT_K_SHIFT: + if (STB_TEXT_HAS_SELECTION(state)) + stb_textedit_delete_selection(str, state); + else { + stb_textedit_clamp(str, state); + if (state->cursor > 0) { + stb_textedit_delete(str, state, state->cursor-1, 1); + --state->cursor; + } + } + state->has_preferred_x = 0; + break; + + case STB_TEXTEDIT_K_TEXTSTART: + state->cursor = state->select_start = state->select_end = 0; + state->has_preferred_x = 0; + break; + + case STB_TEXTEDIT_K_TEXTEND: + state->cursor = STB_TEXTEDIT_STRINGLEN(str); + state->select_start = state->select_end = 0; + state->has_preferred_x = 0; + break; + + case STB_TEXTEDIT_K_TEXTSTART | STB_TEXTEDIT_K_SHIFT: + stb_textedit_prep_selection_at_cursor(state); + state->cursor = state->select_end = 0; + state->has_preferred_x = 0; + break; + + case STB_TEXTEDIT_K_TEXTEND | STB_TEXTEDIT_K_SHIFT: + stb_textedit_prep_selection_at_cursor(state); + state->cursor = state->select_end = STB_TEXTEDIT_STRINGLEN(str); + state->has_preferred_x = 0; + break; + + + case STB_TEXTEDIT_K_LINESTART: { + StbFindState find; + stb_textedit_clamp(str, state); + stb_textedit_move_to_first(state); + stb_textedit_find_charpos(&find, str, state->cursor, state->single_line); + state->cursor = find.first_char; + state->has_preferred_x = 0; + break; + } + + case STB_TEXTEDIT_K_LINEEND: { + StbFindState find; + stb_textedit_clamp(str, state); + stb_textedit_move_to_first(state); + stb_textedit_find_charpos(&find, str, state->cursor, state->single_line); + state->cursor = find.first_char + find.length; + state->has_preferred_x = 0; + break; + } + + case STB_TEXTEDIT_K_LINESTART | STB_TEXTEDIT_K_SHIFT: { + StbFindState find; + stb_textedit_clamp(str, state); + stb_textedit_prep_selection_at_cursor(state); + stb_textedit_find_charpos(&find, str, state->cursor, state->single_line); + state->cursor = state->select_end = find.first_char; + state->has_preferred_x = 0; + break; + } + + case STB_TEXTEDIT_K_LINEEND | STB_TEXTEDIT_K_SHIFT: { + StbFindState find; + stb_textedit_clamp(str, state); + stb_textedit_prep_selection_at_cursor(state); + stb_textedit_find_charpos(&find, str, state->cursor, state->single_line); + state->cursor = state->select_end = find.first_char + find.length; + state->has_preferred_x = 0; + break; + } + +// @TODO: +// STB_TEXTEDIT_K_PGUP - move cursor up a page +// STB_TEXTEDIT_K_PGDOWN - move cursor down a page + } +} + +///////////////////////////////////////////////////////////////////////////// +// +// Undo processing +// +// @OPTIMIZE: the undo/redo buffer should be circular + +static void stb_textedit_flush_redo(StbUndoState *state) +{ + state->redo_point = STB_TEXTEDIT_UNDOSTATECOUNT; + state->redo_char_point = STB_TEXTEDIT_UNDOCHARCOUNT; +} + +// discard the oldest entry in the undo list +static void stb_textedit_discard_undo(StbUndoState *state) +{ + if (state->undo_point > 0) { + // if the 0th undo state has characters, clean those up + if (state->undo_rec[0].char_storage >= 0) { + int n = state->undo_rec[0].insert_length, i; + // delete n characters from all other records + state->undo_char_point = state->undo_char_point - (short) n; // vsnet05 + memmove(state->undo_char, state->undo_char + n, (size_t) ((size_t)state->undo_char_point*sizeof(STB_TEXTEDIT_CHARTYPE))); + for (i=0; i < state->undo_point; ++i) + if (state->undo_rec[i].char_storage >= 0) + state->undo_rec[i].char_storage = state->undo_rec[i].char_storage - (short) n; // vsnet05 // @OPTIMIZE: get rid of char_storage and infer it + } + --state->undo_point; + memmove(state->undo_rec, state->undo_rec+1, (size_t) ((size_t)state->undo_point*sizeof(state->undo_rec[0]))); + } +} + +// discard the oldest entry in the redo list--it's bad if this +// ever happens, but because undo & redo have to store the actual +// characters in different cases, the redo character buffer can +// fill up even though the undo buffer didn't +static void stb_textedit_discard_redo(StbUndoState *state) +{ + int k = STB_TEXTEDIT_UNDOSTATECOUNT-1; + + if (state->redo_point <= k) { + // if the k'th undo state has characters, clean those up + if (state->undo_rec[k].char_storage >= 0) { + int n = state->undo_rec[k].insert_length, i; + // delete n characters from all other records + state->redo_char_point = state->redo_char_point + (short) n; // vsnet05 + memmove(state->undo_char + state->redo_char_point, state->undo_char + state->redo_char_point-n, (size_t) ((size_t)(STB_TEXTEDIT_UNDOSTATECOUNT - state->redo_char_point)*sizeof(STB_TEXTEDIT_CHARTYPE))); + for (i=state->redo_point; i < k; ++i) + if (state->undo_rec[i].char_storage >= 0) + state->undo_rec[i].char_storage = state->undo_rec[i].char_storage + (short) n; // vsnet05 + } + ++state->redo_point; + memmove(state->undo_rec + state->redo_point-1, state->undo_rec + state->redo_point, (size_t) ((size_t)(STB_TEXTEDIT_UNDOSTATECOUNT - state->redo_point)*sizeof(state->undo_rec[0]))); + } +} + +static StbUndoRecord *stb_text_create_undo_record(StbUndoState *state, int numchars) +{ + // any time we create a new undo record, we discard redo + stb_textedit_flush_redo(state); + + // if we have no free records, we have to make room, by sliding the + // existing records down + if (state->undo_point == STB_TEXTEDIT_UNDOSTATECOUNT) + stb_textedit_discard_undo(state); + + // if the characters to store won't possibly fit in the buffer, we can't undo + if (numchars > STB_TEXTEDIT_UNDOCHARCOUNT) { + state->undo_point = 0; + state->undo_char_point = 0; + return NULL; + } + + // if we don't have enough free characters in the buffer, we have to make room + while (state->undo_char_point + numchars > STB_TEXTEDIT_UNDOCHARCOUNT) + stb_textedit_discard_undo(state); + + return &state->undo_rec[state->undo_point++]; +} + +static STB_TEXTEDIT_CHARTYPE *stb_text_createundo(StbUndoState *state, int pos, int insert_len, int delete_len) +{ + StbUndoRecord *r = stb_text_create_undo_record(state, insert_len); + if (r == NULL) + return NULL; + + r->where = pos; + r->insert_length = (short) insert_len; + r->delete_length = (short) delete_len; + + if (insert_len == 0) { + r->char_storage = -1; + return NULL; + } else { + r->char_storage = state->undo_char_point; + state->undo_char_point = state->undo_char_point + (short) insert_len; + return &state->undo_char[r->char_storage]; + } +} + +static void stb_text_undo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state) +{ + StbUndoState *s = &state->undostate; + StbUndoRecord u, *r; + if (s->undo_point == 0) + return; + + // we need to do two things: apply the undo record, and create a redo record + u = s->undo_rec[s->undo_point-1]; + r = &s->undo_rec[s->redo_point-1]; + r->char_storage = -1; + + r->insert_length = u.delete_length; + r->delete_length = u.insert_length; + r->where = u.where; + + if (u.delete_length) { + // if the undo record says to delete characters, then the redo record will + // need to re-insert the characters that get deleted, so we need to store + // them. + + // there are three cases: + // there's enough room to store the characters + // characters stored for *redoing* don't leave room for redo + // characters stored for *undoing* don't leave room for redo + // if the last is true, we have to bail + + if (s->undo_char_point + u.delete_length >= STB_TEXTEDIT_UNDOCHARCOUNT) { + // the undo records take up too much character space; there's no space to store the redo characters + r->insert_length = 0; + } else { + int i; + + // there's definitely room to store the characters eventually + while (s->undo_char_point + u.delete_length > s->redo_char_point) { + // there's currently not enough room, so discard a redo record + stb_textedit_discard_redo(s); + // should never happen: + if (s->redo_point == STB_TEXTEDIT_UNDOSTATECOUNT) + return; + } + r = &s->undo_rec[s->redo_point-1]; + + r->char_storage = s->redo_char_point - u.delete_length; + s->redo_char_point = s->redo_char_point - (short) u.delete_length; + + // now save the characters + for (i=0; i < u.delete_length; ++i) + s->undo_char[r->char_storage + i] = STB_TEXTEDIT_GETCHAR(str, u.where + i); + } + + // now we can carry out the deletion + STB_TEXTEDIT_DELETECHARS(str, u.where, u.delete_length); + } + + // check type of recorded action: + if (u.insert_length) { + // easy case: was a deletion, so we need to insert n characters + STB_TEXTEDIT_INSERTCHARS(str, u.where, &s->undo_char[u.char_storage], u.insert_length); + s->undo_char_point -= u.insert_length; + } + + state->cursor = u.where + u.insert_length; + + s->undo_point--; + s->redo_point--; +} + +static void stb_text_redo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state) +{ + StbUndoState *s = &state->undostate; + StbUndoRecord *u, r; + if (s->redo_point == STB_TEXTEDIT_UNDOSTATECOUNT) + return; + + // we need to do two things: apply the redo record, and create an undo record + u = &s->undo_rec[s->undo_point]; + r = s->undo_rec[s->redo_point]; + + // we KNOW there must be room for the undo record, because the redo record + // was derived from an undo record + + u->delete_length = r.insert_length; + u->insert_length = r.delete_length; + u->where = r.where; + u->char_storage = -1; + + if (r.delete_length) { + // the redo record requires us to delete characters, so the undo record + // needs to store the characters + + if (s->undo_char_point + u->insert_length > s->redo_char_point) { + u->insert_length = 0; + u->delete_length = 0; + } else { + int i; + u->char_storage = s->undo_char_point; + s->undo_char_point = s->undo_char_point + u->insert_length; + + // now save the characters + for (i=0; i < u->insert_length; ++i) + s->undo_char[u->char_storage + i] = STB_TEXTEDIT_GETCHAR(str, u->where + i); + } + + STB_TEXTEDIT_DELETECHARS(str, r.where, r.delete_length); + } + + if (r.insert_length) { + // easy case: need to insert n characters + STB_TEXTEDIT_INSERTCHARS(str, r.where, &s->undo_char[r.char_storage], r.insert_length); + } + + state->cursor = r.where + r.insert_length; + + s->undo_point++; + s->redo_point++; +} + +static void stb_text_makeundo_insert(STB_TexteditState *state, int where, int length) +{ + stb_text_createundo(&state->undostate, where, 0, length); +} + +static void stb_text_makeundo_delete(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int length) +{ + int i; + STB_TEXTEDIT_CHARTYPE *p = stb_text_createundo(&state->undostate, where, length, 0); + if (p) { + for (i=0; i < length; ++i) + p[i] = STB_TEXTEDIT_GETCHAR(str, where+i); + } +} + +static void stb_text_makeundo_replace(STB_TEXTEDIT_STRING *str, STB_TexteditState *state, int where, int old_length, int new_length) +{ + int i; + STB_TEXTEDIT_CHARTYPE *p = stb_text_createundo(&state->undostate, where, old_length, new_length); + if (p) { + for (i=0; i < old_length; ++i) + p[i] = STB_TEXTEDIT_GETCHAR(str, where+i); + } +} + +// reset the state to default +static void stb_textedit_clear_state(STB_TexteditState *state, int is_single_line) +{ + state->undostate.undo_point = 0; + state->undostate.undo_char_point = 0; + state->undostate.redo_point = STB_TEXTEDIT_UNDOSTATECOUNT; + state->undostate.redo_char_point = STB_TEXTEDIT_UNDOCHARCOUNT; + state->select_end = state->select_start = 0; + state->cursor = 0; + state->has_preferred_x = 0; + state->preferred_x = 0; + state->cursor_at_end_of_line = 0; + state->initialized = 1; + state->single_line = (unsigned char) is_single_line; + state->insert_mode = 0; +} + +// API initialize +static void stb_textedit_initialize_state(STB_TexteditState *state, int is_single_line) +{ + stb_textedit_clear_state(state, is_single_line); +} +#endif//STB_TEXTEDIT_IMPLEMENTATION diff --git a/testbed/imgui/stb_truetype.h b/testbed/imgui/stb_truetype.h new file mode 100644 index 00000000..3c5d6f30 --- /dev/null +++ b/testbed/imgui/stb_truetype.h @@ -0,0 +1,2658 @@ +// [ImGui] this is a slightly modified version of stb_truetype.h 1.02 +// [ImGui] we added stbtt_PackFontRangesGatherRects() and stbtt_PackFontRangesRenderIntoRects() and modified stbtt_PackBegin() + +// stb_truetype.h - v1.02 - public domain +// authored from 2009-2014 by Sean Barrett / RAD Game Tools +// +// This library processes TrueType files: +// parse files +// extract glyph metrics +// extract glyph shapes +// render glyphs to one-channel bitmaps with antialiasing (box filter) +// +// Todo: +// non-MS cmaps +// crashproof on bad data +// hinting? (no longer patented) +// cleartype-style AA? +// optimize: use simple memory allocator for intermediates +// optimize: build edge-list directly from curves +// optimize: rasterize directly from curves? +// +// ADDITIONAL CONTRIBUTORS +// +// Mikko Mononen: compound shape support, more cmap formats +// Tor Andersson: kerning, subpixel rendering +// +// Bug/warning reports/fixes: +// "Zer" on mollyrocket (with fix) +// Cass Everitt +// stoiko (Haemimont Games) +// Brian Hook +// Walter van Niftrik +// David Gow +// David Given +// Ivan-Assen Ivanov +// Anthony Pesch +// Johan Duparc +// Hou Qiming +// Fabian "ryg" Giesen +// +// Misc other: +// Ryan Gordon +// +// VERSION HISTORY +// +// 1.02 (2014-12-10) fix various warnings & compile issues w/ stb_rect_pack, C++ +// 1.01 (2014-12-08) fix subpixel position when oversampling to exactly match +// non-oversampled; STBTT_POINT_SIZE for packed case only +// 1.00 (2014-12-06) add new PackBegin etc. API, w/ support for oversampling +// 0.99 (2014-09-18) fix multiple bugs with subpixel rendering (ryg) +// 0.9 (2014-08-07) support certain mac/iOS fonts without an MS platformID +// 0.8b (2014-07-07) fix a warning +// 0.8 (2014-05-25) fix a few more warnings +// 0.7 (2013-09-25) bugfix: subpixel glyph bug fixed in 0.5 had come back +// 0.6c (2012-07-24) improve documentation +// 0.6b (2012-07-20) fix a few more warnings +// 0.6 (2012-07-17) fix warnings; added stbtt_ScaleForMappingEmToPixels, +// stbtt_GetFontBoundingBox, stbtt_IsGlyphEmpty +// 0.5 (2011-12-09) bugfixes: +// subpixel glyph renderer computed wrong bounding box +// first vertex of shape can be off-curve (FreeSans) +// 0.4b (2011-12-03) fixed an error in the font baking example +// 0.4 (2011-12-01) kerning, subpixel rendering (tor) +// bugfixes for: +// codepoint-to-glyph conversion using table fmt=12 +// codepoint-to-glyph conversion using table fmt=4 +// stbtt_GetBakedQuad with non-square texture (Zer) +// updated Hello World! sample to use kerning and subpixel +// fixed some warnings +// 0.3 (2009-06-24) cmap fmt=12, compound shapes (MM) +// userdata, malloc-from-userdata, non-zero fill (stb) +// 0.2 (2009-03-11) Fix unsigned/signed char warnings +// 0.1 (2009-03-09) First public release +// +// LICENSE +// +// This software is in the public domain. Where that dedication is not +// recognized, you are granted a perpetual, irrevokable license to copy +// and modify this file as you see fit. +// +// USAGE +// +// Include this file in whatever places neeed to refer to it. In ONE C/C++ +// file, write: +// #define STB_TRUETYPE_IMPLEMENTATION +// before the #include of this file. This expands out the actual +// implementation into that C/C++ file. +// +// Simple 3D API (don't ship this, but it's fine for tools and quick start) +// stbtt_BakeFontBitmap() -- bake a font to a bitmap for use as texture +// stbtt_GetBakedQuad() -- compute quad to draw for a given char +// +// Improved 3D API (more shippable): +// #include "stb_rect_pack.h" -- optional, but you really want it +// stbtt_PackBegin() +// stbtt_PackSetOversample() -- for improved quality on small fonts +// stbtt_PackFontRanges() -- pack and renders +// stbtt_PackEnd() +// stbtt_GetPackedQuad() +// +// "Load" a font file from a memory buffer (you have to keep the buffer loaded) +// stbtt_InitFont() +// stbtt_GetFontOffsetForIndex() -- use for TTC font collections +// +// Render a unicode codepoint to a bitmap +// stbtt_GetCodepointBitmap() -- allocates and returns a bitmap +// stbtt_MakeCodepointBitmap() -- renders into bitmap you provide +// stbtt_GetCodepointBitmapBox() -- how big the bitmap must be +// +// Character advance/positioning +// stbtt_GetCodepointHMetrics() +// stbtt_GetFontVMetrics() +// stbtt_GetCodepointKernAdvance() +// +// ADDITIONAL DOCUMENTATION +// +// Immediately after this block comment are a series of sample programs. +// +// After the sample programs is the "header file" section. This section +// includes documentation for each API function. +// +// Some important concepts to understand to use this library: +// +// Codepoint +// Characters are defined by unicode codepoints, e.g. 65 is +// uppercase A, 231 is lowercase c with a cedilla, 0x7e30 is +// the hiragana for "ma". +// +// Glyph +// A visual character shape (every codepoint is rendered as +// some glyph) +// +// Glyph index +// A font-specific integer ID representing a glyph +// +// Baseline +// Glyph shapes are defined relative to a baseline, which is the +// bottom of uppercase characters. Characters extend both above +// and below the baseline. +// +// Current Point +// As you draw text to the screen, you keep track of a "current point" +// which is the origin of each character. The current point's vertical +// position is the baseline. Even "baked fonts" use this model. +// +// Vertical Font Metrics +// The vertical qualities of the font, used to vertically position +// and space the characters. See docs for stbtt_GetFontVMetrics. +// +// Font Size in Pixels or Points +// The preferred interface for specifying font sizes in stb_truetype +// is to specify how tall the font's vertical extent should be in pixels. +// If that sounds good enough, skip the next paragraph. +// +// Most font APIs instead use "points", which are a common typographic +// measurement for describing font size, defined as 72 points per inch. +// stb_truetype provides a point API for compatibility. However, true +// "per inch" conventions don't make much sense on computer displays +// since they different monitors have different number of pixels per +// inch. For example, Windows traditionally uses a convention that +// there are 96 pixels per inch, thus making 'inch' measurements have +// nothing to do with inches, and thus effectively defining a point to +// be 1.333 pixels. Additionally, the TrueType font data provides +// an explicit scale factor to scale a given font's glyphs to points, +// but the author has observed that this scale factor is often wrong +// for non-commercial fonts, thus making fonts scaled in points +// according to the TrueType spec incoherently sized in practice. +// +// ADVANCED USAGE +// +// Quality: +// +// - Use the functions with Subpixel at the end to allow your characters +// to have subpixel positioning. Since the font is anti-aliased, not +// hinted, this is very import for quality. (This is not possible with +// baked fonts.) +// +// - Kerning is now supported, and if you're supporting subpixel rendering +// then kerning is worth using to give your text a polished look. +// +// Performance: +// +// - Convert Unicode codepoints to glyph indexes and operate on the glyphs; +// if you don't do this, stb_truetype is forced to do the conversion on +// every call. +// +// - There are a lot of memory allocations. We should modify it to take +// a temp buffer and allocate from the temp buffer (without freeing), +// should help performance a lot. +// +// NOTES +// +// The system uses the raw data found in the .ttf file without changing it +// and without building auxiliary data structures. This is a bit inefficient +// on little-endian systems (the data is big-endian), but assuming you're +// caching the bitmaps or glyph shapes this shouldn't be a big deal. +// +// It appears to be very hard to programmatically determine what font a +// given file is in a general way. I provide an API for this, but I don't +// recommend it. +// +// +// SOURCE STATISTICS (based on v0.6c, 2050 LOC) +// +// Documentation & header file 520 LOC \___ 660 LOC documentation +// Sample code 140 LOC / +// Truetype parsing 620 LOC ---- 620 LOC TrueType +// Software rasterization 240 LOC \ . +// Curve tesselation 120 LOC \__ 550 LOC Bitmap creation +// Bitmap management 100 LOC / +// Baked bitmap interface 70 LOC / +// Font name matching & access 150 LOC ---- 150 +// C runtime library abstraction 60 LOC ---- 60 + + +////////////////////////////////////////////////////////////////////////////// +////////////////////////////////////////////////////////////////////////////// +//// +//// SAMPLE PROGRAMS +//// +// +// Incomplete text-in-3d-api example, which draws quads properly aligned to be lossless +// +#if 0 +#define STB_TRUETYPE_IMPLEMENTATION // force following include to generate implementation +#include "stb_truetype.h" + +char ttf_buffer[1<<20]; +unsigned char temp_bitmap[512*512]; + +stbtt_bakedchar cdata[96]; // ASCII 32..126 is 95 glyphs +GLstbtt_uint ftex; + +void my_stbtt_initfont(void) +{ + fread(ttf_buffer, 1, 1<<20, fopen("c:/windows/fonts/times.ttf", "rb")); + stbtt_BakeFontBitmap(data,0, 32.0, temp_bitmap,512,512, 32,96, cdata); // no guarantee this fits! + // can free ttf_buffer at this point + glGenTextures(1, &ftex); + glBindTexture(GL_TEXTURE_2D, ftex); + glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, 512,512, 0, GL_ALPHA, GL_UNSIGNED_BYTE, temp_bitmap); + // can free temp_bitmap at this point + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); +} + +void my_stbtt_print(float x, float y, char *text) +{ + // assume orthographic projection with units = screen pixels, origin at top left + glBindTexture(GL_TEXTURE_2D, ftex); + glBegin(GL_QUADS); + while (*text) { + if (*text >= 32 && *text < 128) { + stbtt_aligned_quad q; + stbtt_GetBakedQuad(cdata, 512,512, *text-32, &x,&y,&q,1);//1=opengl & d3d10+,0=d3d9 + glTexCoord2f(q.s0,q.t1); glVertex2f(q.x0,q.y0); + glTexCoord2f(q.s1,q.t1); glVertex2f(q.x1,q.y0); + glTexCoord2f(q.s1,q.t0); glVertex2f(q.x1,q.y1); + glTexCoord2f(q.s0,q.t0); glVertex2f(q.x0,q.y1); + } + ++text; + } + glEnd(); +} +#endif +// +// +////////////////////////////////////////////////////////////////////////////// +// +// Complete program (this compiles): get a single bitmap, print as ASCII art +// +#if 0 +#include +#define STB_TRUETYPE_IMPLEMENTATION // force following include to generate implementation +#include "stb_truetype.h" + +char ttf_buffer[1<<25]; + +int main(int argc, char **argv) +{ + stbtt_fontinfo font; + unsigned char *bitmap; + int w,h,i,j,c = (argc > 1 ? atoi(argv[1]) : 'a'), s = (argc > 2 ? atoi(argv[2]) : 20); + + fread(ttf_buffer, 1, 1<<25, fopen(argc > 3 ? argv[3] : "c:/windows/fonts/arialbd.ttf", "rb")); + + stbtt_InitFont(&font, ttf_buffer, stbtt_GetFontOffsetForIndex(ttf_buffer,0)); + bitmap = stbtt_GetCodepointBitmap(&font, 0,stbtt_ScaleForPixelHeight(&font, s), c, &w, &h, 0,0); + + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) + putchar(" .:ioVM@"[bitmap[j*w+i]>>5]); + putchar('\n'); + } + return 0; +} +#endif +// +// Output: +// +// .ii. +// @@@@@@. +// V@Mio@@o +// :i. V@V +// :oM@@M +// :@@@MM@M +// @@o o@M +// :@@. M@M +// @@@o@@@@ +// :M@@V:@@. +// +////////////////////////////////////////////////////////////////////////////// +// +// Complete program: print "Hello World!" banner, with bugs +// +#if 0 +char buffer[24<<20]; +unsigned char screen[20][79]; + +int main(int arg, char **argv) +{ + stbtt_fontinfo font; + int i,j,ascent,baseline,ch=0; + float scale, xpos=2; // leave a little padding in case the character extends left + char *text = "Heljo World!"; + + fread(buffer, 1, 1000000, fopen("c:/windows/fonts/arialbd.ttf", "rb")); + stbtt_InitFont(&font, buffer, 0); + + scale = stbtt_ScaleForPixelHeight(&font, 15); + stbtt_GetFontVMetrics(&font, &ascent,0,0); + baseline = (int) (ascent*scale); + + while (text[ch]) { + int advance,lsb,x0,y0,x1,y1; + float x_shift = xpos - (float) floor(xpos); + stbtt_GetCodepointHMetrics(&font, text[ch], &advance, &lsb); + stbtt_GetCodepointBitmapBoxSubpixel(&font, text[ch], scale,scale,x_shift,0, &x0,&y0,&x1,&y1); + stbtt_MakeCodepointBitmapSubpixel(&font, &screen[baseline + y0][(int) xpos + x0], x1-x0,y1-y0, 79, scale,scale,x_shift,0, text[ch]); + // note that this stomps the old data, so where character boxes overlap (e.g. 'lj') it's wrong + // because this API is really for baking character bitmaps into textures. if you want to render + // a sequence of characters, you really need to render each bitmap to a temp buffer, then + // "alpha blend" that into the working buffer + xpos += (advance * scale); + if (text[ch+1]) + xpos += scale*stbtt_GetCodepointKernAdvance(&font, text[ch],text[ch+1]); + ++ch; + } + + for (j=0; j < 20; ++j) { + for (i=0; i < 78; ++i) + putchar(" .:ioVM@"[screen[j][i]>>5]); + putchar('\n'); + } + + return 0; +} +#endif + + +////////////////////////////////////////////////////////////////////////////// +////////////////////////////////////////////////////////////////////////////// +//// +//// INTEGRATION WITH YOUR CODEBASE +//// +//// The following sections allow you to supply alternate definitions +//// of C library functions used by stb_truetype. + +#ifdef STB_TRUETYPE_IMPLEMENTATION + // #define your own (u)stbtt_int8/16/32 before including to override this + #ifndef stbtt_uint8 + typedef unsigned char stbtt_uint8; + typedef signed char stbtt_int8; + typedef unsigned short stbtt_uint16; + typedef signed short stbtt_int16; + typedef unsigned int stbtt_uint32; + typedef signed int stbtt_int32; + #endif + + typedef char stbtt__check_size32[sizeof(stbtt_int32)==4 ? 1 : -1]; + typedef char stbtt__check_size16[sizeof(stbtt_int16)==2 ? 1 : -1]; + + #ifdef STBTT_STATIC + #define STBTT_DEF static + #else + #define STBTT_DEF extern + #endif + + // #define your own STBTT_sort() to override this to avoid qsort + #ifndef STBTT_sort + #include + #define STBTT_sort(data,num_items,item_size,compare_func) qsort(data,num_items,item_size,compare_func) + #endif + + // #define your own STBTT_ifloor/STBTT_iceil() to avoid math.h + #ifndef STBTT_ifloor + #include + #define STBTT_ifloor(x) ((int) floor(x)) + #define STBTT_iceil(x) ((int) ceil(x)) + #endif + + #ifndef STBTT_sqrt + #include + #define STBTT_sqrt(x) sqrt(x) + #endif + + // #define your own functions "STBTT_malloc" / "STBTT_free" to avoid malloc.h + #ifndef STBTT_malloc + #include + #define STBTT_malloc(x,u) ((void)(u),malloc(x)) + #define STBTT_free(x,u) ((void)(u),free(x)) + #endif + + #ifndef STBTT_assert + #include + #define STBTT_assert(x) assert(x) + #endif + + #ifndef STBTT_strlen + #include + #define STBTT_strlen(x) strlen(x) + #endif + + #ifndef STBTT_memcpy + #include + #define STBTT_memcpy memcpy + #define STBTT_memset memset + #endif +#endif + +/////////////////////////////////////////////////////////////////////////////// +/////////////////////////////////////////////////////////////////////////////// +//// +//// INTERFACE +//// +//// + +#ifndef __STB_INCLUDE_STB_TRUETYPE_H__ +#define __STB_INCLUDE_STB_TRUETYPE_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +////////////////////////////////////////////////////////////////////////////// +// +// TEXTURE BAKING API +// +// If you use this API, you only have to call two functions ever. +// + +typedef struct +{ + unsigned short x0,y0,x1,y1; // coordinates of bbox in bitmap + float xoff,yoff,xadvance; +} stbtt_bakedchar; + +STBTT_DEF int stbtt_BakeFontBitmap(const unsigned char *data, int offset, // font location (use offset=0 for plain .ttf) + float pixel_height, // height of font in pixels + unsigned char *pixels, int pw, int ph, // bitmap to be filled in + int first_char, int num_chars, // characters to bake + stbtt_bakedchar *chardata); // you allocate this, it's num_chars long +// if return is positive, the first unused row of the bitmap +// if return is negative, returns the negative of the number of characters that fit +// if return is 0, no characters fit and no rows were used +// This uses a very crappy packing. + +typedef struct +{ + float x0,y0,s0,t0; // top-left + float x1,y1,s1,t1; // bottom-right +} stbtt_aligned_quad; + +STBTT_DEF void stbtt_GetBakedQuad(stbtt_bakedchar *chardata, int pw, int ph, // same data as above + int char_index, // character to display + float *xpos, float *ypos, // pointers to current position in screen pixel space + stbtt_aligned_quad *q, // output: quad to draw + int opengl_fillrule); // true if opengl fill rule; false if DX9 or earlier +// Call GetBakedQuad with char_index = 'character - first_char', and it +// creates the quad you need to draw and advances the current position. +// +// The coordinate system used assumes y increases downwards. +// +// Characters will extend both above and below the current position; +// see discussion of "BASELINE" above. +// +// It's inefficient; you might want to c&p it and optimize it. + + + +////////////////////////////////////////////////////////////////////////////// +// +// NEW TEXTURE BAKING API +// +// This provides options for packing multiple fonts into one atlas, not +// perfectly but better than nothing. + +typedef struct +{ + unsigned short x0,y0,x1,y1; // coordinates of bbox in bitmap + float xoff,yoff,xadvance; + float xoff2,yoff2; +} stbtt_packedchar; + +typedef struct stbtt_pack_context stbtt_pack_context; +typedef struct stbtt_fontinfo stbtt_fontinfo; +#ifndef STB_RECT_PACK_VERSION +typedef struct stbrp_rect stbrp_rect; +#endif + +STBTT_DEF int stbtt_PackBegin(stbtt_pack_context *spc, unsigned char *pixels, int width, int height, int stride_in_bytes, int padding, void *alloc_context); +// Initializes a packing context stored in the passed-in stbtt_pack_context. +// Future calls using this context will pack characters into the bitmap passed +// in here: a 1-channel bitmap that is weight x height. stride_in_bytes is +// the distance from one row to the next (or 0 to mean they are packed tightly +// together). "padding" is // the amount of padding to leave between each +// character (normally you want '1' for bitmaps you'll use as textures with +// bilinear filtering). +// +// Returns 0 on failure, 1 on success. + +STBTT_DEF void stbtt_PackEnd (stbtt_pack_context *spc); +// Cleans up the packing context and frees all memory. + +#define STBTT_POINT_SIZE(x) (-(x)) + +STBTT_DEF int stbtt_PackFontRange(stbtt_pack_context *spc, unsigned char *fontdata, int font_index, float font_size, + int first_unicode_char_in_range, int num_chars_in_range, stbtt_packedchar *chardata_for_range); +// Creates character bitmaps from the font_index'th font found in fontdata (use +// font_index=0 if you don't know what that is). It creates num_chars_in_range +// bitmaps for characters with unicode values starting at first_unicode_char_in_range +// and increasing. Data for how to render them is stored in chardata_for_range; +// pass these to stbtt_GetPackedQuad to get back renderable quads. +// +// font_size is the full height of the character from ascender to descender, +// as computed by stbtt_ScaleForPixelHeight. To use a point size as computed +// by stbtt_ScaleForMappingEmToPixels, wrap the point size in STBTT_POINT_SIZE() +// and pass that result as 'font_size': +// ..., 20 , ... // font max minus min y is 20 pixels tall +// ..., STBTT_POINT_SIZE(20), ... // 'M' is 20 pixels tall + +typedef struct +{ + float font_size; + int first_unicode_char_in_range; + int num_chars_in_range; + stbtt_packedchar *chardata_for_range; // output +} stbtt_pack_range; + +STBTT_DEF int stbtt_PackFontRanges(stbtt_pack_context *spc, unsigned char *fontdata, int font_index, stbtt_pack_range *ranges, int num_ranges); +// Creates character bitmaps from multiple ranges of characters stored in +// ranges. This will usually create a better-packed bitmap than multiple +// calls to stbtt_PackFontRange. + +STBTT_DEF int stbtt_PackFontRangesGatherRects(stbtt_pack_context *spc, stbtt_fontinfo *info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects); +STBTT_DEF int stbtt_PackFontRangesRenderIntoRects(stbtt_pack_context *spc, stbtt_fontinfo *info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects); +// Those functions are called by stbtt_PackFontRanges(). If you want to +// pack multiple fonts or custom data into a same texture, you may copy +// the contents of stbtt_PackFontRanges() and create a custom version +// using those functions. + +STBTT_DEF void stbtt_PackSetOversampling(stbtt_pack_context *spc, unsigned int h_oversample, unsigned int v_oversample); +// Oversampling a font increases the quality by allowing higher-quality subpixel +// positioning, and is especially valuable at smaller text sizes. +// +// This function sets the amount of oversampling for all following calls to +// stbtt_PackFontRange(s). The default (no oversampling) is achieved by +// h_oversample=1, v_oversample=1. The total number of pixels required is +// h_oversample*v_oversample larger than the default; for example, 2x2 +// oversampling requires 4x the storage of 1x1. For best results, render +// oversampled textures with bilinear filtering. Look at the readme in +// stb/tests/oversample for information about oversampled fonts + +STBTT_DEF void stbtt_GetPackedQuad(stbtt_packedchar *chardata, int pw, int ph, // same data as above + int char_index, // character to display + float *xpos, float *ypos, // pointers to current position in screen pixel space + stbtt_aligned_quad *q, // output: quad to draw + int align_to_integer); + +// this is an opaque structure that you shouldn't mess with which holds +// all the context needed from PackBegin to PackEnd. +struct stbtt_pack_context { + void *user_allocator_context; + void *pack_info; + int width; + int height; + int stride_in_bytes; + int padding; + unsigned int h_oversample, v_oversample; + unsigned char *pixels; + void *nodes; +}; + +////////////////////////////////////////////////////////////////////////////// +// +// FONT LOADING +// +// + +STBTT_DEF int stbtt_GetFontOffsetForIndex(const unsigned char *data, int index); +// Each .ttf/.ttc file may have more than one font. Each font has a sequential +// index number starting from 0. Call this function to get the font offset for +// a given index; it returns -1 if the index is out of range. A regular .ttf +// file will only define one font and it always be at offset 0, so it will +// return '0' for index 0, and -1 for all other indices. You can just skip +// this step if you know it's that kind of font. + + +// The following structure is defined publically so you can declare one on +// the stack or as a global or etc, but you should treat it as opaque. +typedef struct stbtt_fontinfo +{ + void * userdata; + unsigned char * data; // pointer to .ttf file + int fontstart; // offset of start of font + + int numGlyphs; // number of glyphs, needed for range checking + + int loca,head,glyf,hhea,hmtx,kern; // table locations as offset from start of .ttf + int index_map; // a cmap mapping for our chosen character encoding + int indexToLocFormat; // format needed to map from glyph index to glyph +} stbtt_fontinfo; + +STBTT_DEF int stbtt_InitFont(stbtt_fontinfo *info, const unsigned char *data, int offset); +// Given an offset into the file that defines a font, this function builds +// the necessary cached info for the rest of the system. You must allocate +// the stbtt_fontinfo yourself, and stbtt_InitFont will fill it out. You don't +// need to do anything special to free it, because the contents are pure +// value data with no additional data structures. Returns 0 on failure. + + +////////////////////////////////////////////////////////////////////////////// +// +// CHARACTER TO GLYPH-INDEX CONVERSIOn + +STBTT_DEF int stbtt_FindGlyphIndex(const stbtt_fontinfo *info, int unicode_codepoint); +// If you're going to perform multiple operations on the same character +// and you want a speed-up, call this function with the character you're +// going to process, then use glyph-based functions instead of the +// codepoint-based functions. + + +////////////////////////////////////////////////////////////////////////////// +// +// CHARACTER PROPERTIES +// + +STBTT_DEF float stbtt_ScaleForPixelHeight(const stbtt_fontinfo *info, float pixels); +// computes a scale factor to produce a font whose "height" is 'pixels' tall. +// Height is measured as the distance from the highest ascender to the lowest +// descender; in other words, it's equivalent to calling stbtt_GetFontVMetrics +// and computing: +// scale = pixels / (ascent - descent) +// so if you prefer to measure height by the ascent only, use a similar calculation. + +STBTT_DEF float stbtt_ScaleForMappingEmToPixels(const stbtt_fontinfo *info, float pixels); +// computes a scale factor to produce a font whose EM size is mapped to +// 'pixels' tall. This is probably what traditional APIs compute, but +// I'm not positive. + +STBTT_DEF void stbtt_GetFontVMetrics(const stbtt_fontinfo *info, int *ascent, int *descent, int *lineGap); +// ascent is the coordinate above the baseline the font extends; descent +// is the coordinate below the baseline the font extends (i.e. it is typically negative) +// lineGap is the spacing between one row's descent and the next row's ascent... +// so you should advance the vertical position by "*ascent - *descent + *lineGap" +// these are expressed in unscaled coordinates, so you must multiply by +// the scale factor for a given size + +STBTT_DEF void stbtt_GetFontBoundingBox(const stbtt_fontinfo *info, int *x0, int *y0, int *x1, int *y1); +// the bounding box around all possible characters + +STBTT_DEF void stbtt_GetCodepointHMetrics(const stbtt_fontinfo *info, int codepoint, int *advanceWidth, int *leftSideBearing); +// leftSideBearing is the offset from the current horizontal position to the left edge of the character +// advanceWidth is the offset from the current horizontal position to the next horizontal position +// these are expressed in unscaled coordinates + +STBTT_DEF int stbtt_GetCodepointKernAdvance(const stbtt_fontinfo *info, int ch1, int ch2); +// an additional amount to add to the 'advance' value between ch1 and ch2 + +STBTT_DEF int stbtt_GetCodepointBox(const stbtt_fontinfo *info, int codepoint, int *x0, int *y0, int *x1, int *y1); +// Gets the bounding box of the visible part of the glyph, in unscaled coordinates + +STBTT_DEF void stbtt_GetGlyphHMetrics(const stbtt_fontinfo *info, int glyph_index, int *advanceWidth, int *leftSideBearing); +STBTT_DEF int stbtt_GetGlyphKernAdvance(const stbtt_fontinfo *info, int glyph1, int glyph2); +STBTT_DEF int stbtt_GetGlyphBox(const stbtt_fontinfo *info, int glyph_index, int *x0, int *y0, int *x1, int *y1); +// as above, but takes one or more glyph indices for greater efficiency + + +////////////////////////////////////////////////////////////////////////////// +// +// GLYPH SHAPES (you probably don't need these, but they have to go before +// the bitmaps for C declaration-order reasons) +// + +#ifndef STBTT_vmove // you can predefine these to use different values (but why?) + enum { + STBTT_vmove=1, + STBTT_vline, + STBTT_vcurve + }; +#endif + +#ifndef stbtt_vertex // you can predefine this to use different values + // (we share this with other code at RAD) + #define stbtt_vertex_type short // can't use stbtt_int16 because that's not visible in the header file + typedef struct + { + stbtt_vertex_type x,y,cx,cy; + unsigned char type,padding; + } stbtt_vertex; +#endif + +STBTT_DEF int stbtt_IsGlyphEmpty(const stbtt_fontinfo *info, int glyph_index); +// returns non-zero if nothing is drawn for this glyph + +STBTT_DEF int stbtt_GetCodepointShape(const stbtt_fontinfo *info, int unicode_codepoint, stbtt_vertex **vertices); +STBTT_DEF int stbtt_GetGlyphShape(const stbtt_fontinfo *info, int glyph_index, stbtt_vertex **vertices); +// returns # of vertices and fills *vertices with the pointer to them +// these are expressed in "unscaled" coordinates +// +// The shape is a series of countours. Each one starts with +// a STBTT_moveto, then consists of a series of mixed +// STBTT_lineto and STBTT_curveto segments. A lineto +// draws a line from previous endpoint to its x,y; a curveto +// draws a quadratic bezier from previous endpoint to +// its x,y, using cx,cy as the bezier control point. + +STBTT_DEF void stbtt_FreeShape(const stbtt_fontinfo *info, stbtt_vertex *vertices); +// frees the data allocated above + +////////////////////////////////////////////////////////////////////////////// +// +// BITMAP RENDERING +// + +STBTT_DEF void stbtt_FreeBitmap(unsigned char *bitmap, void *userdata); +// frees the bitmap allocated below + +STBTT_DEF unsigned char *stbtt_GetCodepointBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int codepoint, int *width, int *height, int *xoff, int *yoff); +// allocates a large-enough single-channel 8bpp bitmap and renders the +// specified character/glyph at the specified scale into it, with +// antialiasing. 0 is no coverage (transparent), 255 is fully covered (opaque). +// *width & *height are filled out with the width & height of the bitmap, +// which is stored left-to-right, top-to-bottom. +// +// xoff/yoff are the offset it pixel space from the glyph origin to the top-left of the bitmap + +STBTT_DEF unsigned char *stbtt_GetCodepointBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint, int *width, int *height, int *xoff, int *yoff); +// the same as stbtt_GetCodepoitnBitmap, but you can specify a subpixel +// shift for the character + +STBTT_DEF void stbtt_MakeCodepointBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int codepoint); +// the same as stbtt_GetCodepointBitmap, but you pass in storage for the bitmap +// in the form of 'output', with row spacing of 'out_stride' bytes. the bitmap +// is clipped to out_w/out_h bytes. Call stbtt_GetCodepointBitmapBox to get the +// width and height and positioning info for it first. + +STBTT_DEF void stbtt_MakeCodepointBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint); +// same as stbtt_MakeCodepointBitmap, but you can specify a subpixel +// shift for the character + +STBTT_DEF void stbtt_GetCodepointBitmapBox(const stbtt_fontinfo *font, int codepoint, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1); +// get the bbox of the bitmap centered around the glyph origin; so the +// bitmap width is ix1-ix0, height is iy1-iy0, and location to place +// the bitmap top left is (leftSideBearing*scale,iy0). +// (Note that the bitmap uses y-increases-down, but the shape uses +// y-increases-up, so CodepointBitmapBox and CodepointBox are inverted.) + +STBTT_DEF void stbtt_GetCodepointBitmapBoxSubpixel(const stbtt_fontinfo *font, int codepoint, float scale_x, float scale_y, float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1); +// same as stbtt_GetCodepointBitmapBox, but you can specify a subpixel +// shift for the character + +// the following functions are equivalent to the above functions, but operate +// on glyph indices instead of Unicode codepoints (for efficiency) +STBTT_DEF unsigned char *stbtt_GetGlyphBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int glyph, int *width, int *height, int *xoff, int *yoff); +STBTT_DEF unsigned char *stbtt_GetGlyphBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int glyph, int *width, int *height, int *xoff, int *yoff); +STBTT_DEF void stbtt_MakeGlyphBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int glyph); +STBTT_DEF void stbtt_MakeGlyphBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int glyph); +STBTT_DEF void stbtt_GetGlyphBitmapBox(const stbtt_fontinfo *font, int glyph, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1); +STBTT_DEF void stbtt_GetGlyphBitmapBoxSubpixel(const stbtt_fontinfo *font, int glyph, float scale_x, float scale_y,float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1); + + +// @TODO: don't expose this structure +typedef struct +{ + int w,h,stride; + unsigned char *pixels; +} stbtt__bitmap; + +STBTT_DEF void stbtt_Rasterize(stbtt__bitmap *result, float flatness_in_pixels, stbtt_vertex *vertices, int num_verts, float scale_x, float scale_y, float shift_x, float shift_y, int x_off, int y_off, int invert, void *userdata); + +////////////////////////////////////////////////////////////////////////////// +// +// Finding the right font... +// +// You should really just solve this offline, keep your own tables +// of what font is what, and don't try to get it out of the .ttf file. +// That's because getting it out of the .ttf file is really hard, because +// the names in the file can appear in many possible encodings, in many +// possible languages, and e.g. if you need a case-insensitive comparison, +// the details of that depend on the encoding & language in a complex way +// (actually underspecified in truetype, but also gigantic). +// +// But you can use the provided functions in two possible ways: +// stbtt_FindMatchingFont() will use *case-sensitive* comparisons on +// unicode-encoded names to try to find the font you want; +// you can run this before calling stbtt_InitFont() +// +// stbtt_GetFontNameString() lets you get any of the various strings +// from the file yourself and do your own comparisons on them. +// You have to have called stbtt_InitFont() first. + + +STBTT_DEF int stbtt_FindMatchingFont(const unsigned char *fontdata, const char *name, int flags); +// returns the offset (not index) of the font that matches, or -1 if none +// if you use STBTT_MACSTYLE_DONTCARE, use a font name like "Arial Bold". +// if you use any other flag, use a font name like "Arial"; this checks +// the 'macStyle' header field; i don't know if fonts set this consistently +#define STBTT_MACSTYLE_DONTCARE 0 +#define STBTT_MACSTYLE_BOLD 1 +#define STBTT_MACSTYLE_ITALIC 2 +#define STBTT_MACSTYLE_UNDERSCORE 4 +#define STBTT_MACSTYLE_NONE 8 // <= not same as 0, this makes us check the bitfield is 0 + +STBTT_DEF int stbtt_CompareUTF8toUTF16_bigendian(const char *s1, int len1, const char *s2, int len2); +// returns 1/0 whether the first string interpreted as utf8 is identical to +// the second string interpreted as big-endian utf16... useful for strings from next func + +STBTT_DEF const char *stbtt_GetFontNameString(const stbtt_fontinfo *font, int *length, int platformID, int encodingID, int languageID, int nameID); +// returns the string (which may be big-endian double byte, e.g. for unicode) +// and puts the length in bytes in *length. +// +// some of the values for the IDs are below; for more see the truetype spec: +// http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6name.html +// http://www.microsoft.com/typography/otspec/name.htm + +enum { // platformID + STBTT_PLATFORM_ID_UNICODE =0, + STBTT_PLATFORM_ID_MAC =1, + STBTT_PLATFORM_ID_ISO =2, + STBTT_PLATFORM_ID_MICROSOFT =3 +}; + +enum { // encodingID for STBTT_PLATFORM_ID_UNICODE + STBTT_UNICODE_EID_UNICODE_1_0 =0, + STBTT_UNICODE_EID_UNICODE_1_1 =1, + STBTT_UNICODE_EID_ISO_10646 =2, + STBTT_UNICODE_EID_UNICODE_2_0_BMP=3, + STBTT_UNICODE_EID_UNICODE_2_0_FULL=4 +}; + +enum { // encodingID for STBTT_PLATFORM_ID_MICROSOFT + STBTT_MS_EID_SYMBOL =0, + STBTT_MS_EID_UNICODE_BMP =1, + STBTT_MS_EID_SHIFTJIS =2, + STBTT_MS_EID_UNICODE_FULL =10 +}; + +enum { // encodingID for STBTT_PLATFORM_ID_MAC; same as Script Manager codes + STBTT_MAC_EID_ROMAN =0, STBTT_MAC_EID_ARABIC =4, + STBTT_MAC_EID_JAPANESE =1, STBTT_MAC_EID_HEBREW =5, + STBTT_MAC_EID_CHINESE_TRAD =2, STBTT_MAC_EID_GREEK =6, + STBTT_MAC_EID_KOREAN =3, STBTT_MAC_EID_RUSSIAN =7 +}; + +enum { // languageID for STBTT_PLATFORM_ID_MICROSOFT; same as LCID... + // problematic because there are e.g. 16 english LCIDs and 16 arabic LCIDs + STBTT_MS_LANG_ENGLISH =0x0409, STBTT_MS_LANG_ITALIAN =0x0410, + STBTT_MS_LANG_CHINESE =0x0804, STBTT_MS_LANG_JAPANESE =0x0411, + STBTT_MS_LANG_DUTCH =0x0413, STBTT_MS_LANG_KOREAN =0x0412, + STBTT_MS_LANG_FRENCH =0x040c, STBTT_MS_LANG_RUSSIAN =0x0419, + STBTT_MS_LANG_GERMAN =0x0407, STBTT_MS_LANG_SPANISH =0x0409, + STBTT_MS_LANG_HEBREW =0x040d, STBTT_MS_LANG_SWEDISH =0x041D +}; + +enum { // languageID for STBTT_PLATFORM_ID_MAC + STBTT_MAC_LANG_ENGLISH =0 , STBTT_MAC_LANG_JAPANESE =11, + STBTT_MAC_LANG_ARABIC =12, STBTT_MAC_LANG_KOREAN =23, + STBTT_MAC_LANG_DUTCH =4 , STBTT_MAC_LANG_RUSSIAN =32, + STBTT_MAC_LANG_FRENCH =1 , STBTT_MAC_LANG_SPANISH =6 , + STBTT_MAC_LANG_GERMAN =2 , STBTT_MAC_LANG_SWEDISH =5 , + STBTT_MAC_LANG_HEBREW =10, STBTT_MAC_LANG_CHINESE_SIMPLIFIED =33, + STBTT_MAC_LANG_ITALIAN =3 , STBTT_MAC_LANG_CHINESE_TRAD =19 +}; + +#ifdef __cplusplus +} +#endif + +#endif // __STB_INCLUDE_STB_TRUETYPE_H__ + +/////////////////////////////////////////////////////////////////////////////// +/////////////////////////////////////////////////////////////////////////////// +//// +//// IMPLEMENTATION +//// +//// + +#ifdef STB_TRUETYPE_IMPLEMENTATION + +#ifndef STBTT_MAX_OVERSAMPLE +#define STBTT_MAX_OVERSAMPLE 8 +#endif + +typedef int stbtt__test_oversample_pow2[(STBTT_MAX_OVERSAMPLE & (STBTT_MAX_OVERSAMPLE-1)) == 0 ? 1 : -1]; + +////////////////////////////////////////////////////////////////////////// +// +// accessors to parse data from file +// + +// on platforms that don't allow misaligned reads, if we want to allow +// truetype fonts that aren't padded to alignment, define ALLOW_UNALIGNED_TRUETYPE + +#define ttBYTE(p) (* (stbtt_uint8 *) (p)) +#define ttCHAR(p) (* (stbtt_int8 *) (p)) +#define ttFixed(p) ttLONG(p) + +#if defined(STB_TRUETYPE_BIGENDIAN) && !defined(ALLOW_UNALIGNED_TRUETYPE) + + #define ttUSHORT(p) (* (stbtt_uint16 *) (p)) + #define ttSHORT(p) (* (stbtt_int16 *) (p)) + #define ttULONG(p) (* (stbtt_uint32 *) (p)) + #define ttLONG(p) (* (stbtt_int32 *) (p)) + +#else + + static stbtt_uint16 ttUSHORT(const stbtt_uint8 *p) { return p[0]*256 + p[1]; } + static stbtt_int16 ttSHORT(const stbtt_uint8 *p) { return p[0]*256 + p[1]; } + static stbtt_uint32 ttULONG(const stbtt_uint8 *p) { return (p[0]<<24) + (p[1]<<16) + (p[2]<<8) + p[3]; } + static stbtt_int32 ttLONG(const stbtt_uint8 *p) { return (p[0]<<24) + (p[1]<<16) + (p[2]<<8) + p[3]; } + +#endif + +#define stbtt_tag4(p,c0,c1,c2,c3) ((p)[0] == (c0) && (p)[1] == (c1) && (p)[2] == (c2) && (p)[3] == (c3)) +#define stbtt_tag(p,str) stbtt_tag4(p,str[0],str[1],str[2],str[3]) + +static int stbtt__isfont(const stbtt_uint8 *font) +{ + // check the version number + if (stbtt_tag4(font, '1',0,0,0)) return 1; // TrueType 1 + if (stbtt_tag(font, "typ1")) return 1; // TrueType with type 1 font -- we don't support this! + if (stbtt_tag(font, "OTTO")) return 1; // OpenType with CFF + if (stbtt_tag4(font, 0,1,0,0)) return 1; // OpenType 1.0 + return 0; +} + +// @OPTIMIZE: binary search +static stbtt_uint32 stbtt__find_table(stbtt_uint8 *data, stbtt_uint32 fontstart, const char *tag) +{ + stbtt_int32 num_tables = ttUSHORT(data+fontstart+4); + stbtt_uint32 tabledir = fontstart + 12; + stbtt_int32 i; + for (i=0; i < num_tables; ++i) { + stbtt_uint32 loc = tabledir + 16*i; + if (stbtt_tag(data+loc+0, tag)) + return ttULONG(data+loc+8); + } + return 0; +} + +STBTT_DEF int stbtt_GetFontOffsetForIndex(const unsigned char *font_collection, int index) +{ + // if it's just a font, there's only one valid index + if (stbtt__isfont(font_collection)) + return index == 0 ? 0 : -1; + + // check if it's a TTC + if (stbtt_tag(font_collection, "ttcf")) { + // version 1? + if (ttULONG(font_collection+4) == 0x00010000 || ttULONG(font_collection+4) == 0x00020000) { + stbtt_int32 n = ttLONG(font_collection+8); + if (index >= n) + return -1; + return ttULONG(font_collection+12+index*14); + } + } + return -1; +} + +STBTT_DEF int stbtt_InitFont(stbtt_fontinfo *info, const unsigned char *data2, int fontstart) +{ + stbtt_uint8 *data = (stbtt_uint8 *) data2; + stbtt_uint32 cmap, t; + stbtt_int32 i,numTables; + + info->data = data; + info->fontstart = fontstart; + + cmap = stbtt__find_table(data, fontstart, "cmap"); // required + info->loca = stbtt__find_table(data, fontstart, "loca"); // required + info->head = stbtt__find_table(data, fontstart, "head"); // required + info->glyf = stbtt__find_table(data, fontstart, "glyf"); // required + info->hhea = stbtt__find_table(data, fontstart, "hhea"); // required + info->hmtx = stbtt__find_table(data, fontstart, "hmtx"); // required + info->kern = stbtt__find_table(data, fontstart, "kern"); // not required + if (!cmap || !info->loca || !info->head || !info->glyf || !info->hhea || !info->hmtx) + return 0; + + t = stbtt__find_table(data, fontstart, "maxp"); + if (t) + info->numGlyphs = ttUSHORT(data+t+4); + else + info->numGlyphs = 0xffff; + + // find a cmap encoding table we understand *now* to avoid searching + // later. (todo: could make this installable) + // the same regardless of glyph. + numTables = ttUSHORT(data + cmap + 2); + info->index_map = 0; + for (i=0; i < numTables; ++i) { + stbtt_uint32 encoding_record = cmap + 4 + 8 * i; + // find an encoding we understand: + switch(ttUSHORT(data+encoding_record)) { + case STBTT_PLATFORM_ID_MICROSOFT: + switch (ttUSHORT(data+encoding_record+2)) { + case STBTT_MS_EID_UNICODE_BMP: + case STBTT_MS_EID_UNICODE_FULL: + // MS/Unicode + info->index_map = cmap + ttULONG(data+encoding_record+4); + break; + } + break; + case STBTT_PLATFORM_ID_UNICODE: + // Mac/iOS has these + // all the encodingIDs are unicode, so we don't bother to check it + info->index_map = cmap + ttULONG(data+encoding_record+4); + break; + } + } + if (info->index_map == 0) + return 0; + + info->indexToLocFormat = ttUSHORT(data+info->head + 50); + return 1; +} + +STBTT_DEF int stbtt_FindGlyphIndex(const stbtt_fontinfo *info, int unicode_codepoint) +{ + stbtt_uint8 *data = info->data; + stbtt_uint32 index_map = info->index_map; + + stbtt_uint16 format = ttUSHORT(data + index_map + 0); + if (format == 0) { // apple byte encoding + stbtt_int32 bytes = ttUSHORT(data + index_map + 2); + if (unicode_codepoint < bytes-6) + return ttBYTE(data + index_map + 6 + unicode_codepoint); + return 0; + } else if (format == 6) { + stbtt_uint32 first = ttUSHORT(data + index_map + 6); + stbtt_uint32 count = ttUSHORT(data + index_map + 8); + if ((stbtt_uint32) unicode_codepoint >= first && (stbtt_uint32) unicode_codepoint < first+count) + return ttUSHORT(data + index_map + 10 + (unicode_codepoint - first)*2); + return 0; + } else if (format == 2) { + STBTT_assert(0); // @TODO: high-byte mapping for japanese/chinese/korean + return 0; + } else if (format == 4) { // standard mapping for windows fonts: binary search collection of ranges + stbtt_uint16 segcount = ttUSHORT(data+index_map+6) >> 1; + stbtt_uint16 searchRange = ttUSHORT(data+index_map+8) >> 1; + stbtt_uint16 entrySelector = ttUSHORT(data+index_map+10); + stbtt_uint16 rangeShift = ttUSHORT(data+index_map+12) >> 1; + stbtt_uint16 item, offset, start, end; + + // do a binary search of the segments + stbtt_uint32 endCount = index_map + 14; + stbtt_uint32 search = endCount; + + if (unicode_codepoint > 0xffff) + return 0; + + // they lie from endCount .. endCount + segCount + // but searchRange is the nearest power of two, so... + if (unicode_codepoint >= ttUSHORT(data + search + rangeShift*2)) + search += rangeShift*2; + + // now decrement to bias correctly to find smallest + search -= 2; + while (entrySelector) { + searchRange >>= 1; + start = ttUSHORT(data + search + searchRange*2 + segcount*2 + 2); + end = ttUSHORT(data + search + searchRange*2); + if (unicode_codepoint > end) + search += searchRange*2; + --entrySelector; + } + search += 2; + + item = (stbtt_uint16) ((search - endCount) >> 1); + + STBTT_assert(unicode_codepoint <= ttUSHORT(data + endCount + 2*item)); + start = ttUSHORT(data + index_map + 14 + segcount*2 + 2 + 2*item); + end = ttUSHORT(data + index_map + 14 + 2 + 2*item); + if (unicode_codepoint < start) + return 0; + + offset = ttUSHORT(data + index_map + 14 + segcount*6 + 2 + 2*item); + if (offset == 0) + return (stbtt_uint16) (unicode_codepoint + ttSHORT(data + index_map + 14 + segcount*4 + 2 + 2*item)); + + return ttUSHORT(data + offset + (unicode_codepoint-start)*2 + index_map + 14 + segcount*6 + 2 + 2*item); + } else if (format == 12 || format == 13) { + stbtt_uint32 ngroups = ttULONG(data+index_map+12); + stbtt_int32 low,high; + low = 0; high = (stbtt_int32)ngroups; + // Binary search the right group. + while (low < high) { + stbtt_int32 mid = low + ((high-low) >> 1); // rounds down, so low <= mid < high + stbtt_uint32 start_char = ttULONG(data+index_map+16+mid*12); + stbtt_uint32 end_char = ttULONG(data+index_map+16+mid*12+4); + if ((stbtt_uint32) unicode_codepoint < start_char) + high = mid; + else if ((stbtt_uint32) unicode_codepoint > end_char) + low = mid+1; + else { + stbtt_uint32 start_glyph = ttULONG(data+index_map+16+mid*12+8); + if (format == 12) + return start_glyph + unicode_codepoint-start_char; + else // format == 13 + return start_glyph; + } + } + return 0; // not found + } + // @TODO + STBTT_assert(0); + return 0; +} + +STBTT_DEF int stbtt_GetCodepointShape(const stbtt_fontinfo *info, int unicode_codepoint, stbtt_vertex **vertices) +{ + return stbtt_GetGlyphShape(info, stbtt_FindGlyphIndex(info, unicode_codepoint), vertices); +} + +static void stbtt_setvertex(stbtt_vertex *v, stbtt_uint8 type, stbtt_int32 x, stbtt_int32 y, stbtt_int32 cx, stbtt_int32 cy) +{ + v->type = type; + v->x = (stbtt_int16) x; + v->y = (stbtt_int16) y; + v->cx = (stbtt_int16) cx; + v->cy = (stbtt_int16) cy; +} + +static int stbtt__GetGlyfOffset(const stbtt_fontinfo *info, int glyph_index) +{ + int g1,g2; + + if (glyph_index >= info->numGlyphs) return -1; // glyph index out of range + if (info->indexToLocFormat >= 2) return -1; // unknown index->glyph map format + + if (info->indexToLocFormat == 0) { + g1 = info->glyf + ttUSHORT(info->data + info->loca + glyph_index * 2) * 2; + g2 = info->glyf + ttUSHORT(info->data + info->loca + glyph_index * 2 + 2) * 2; + } else { + g1 = info->glyf + ttULONG (info->data + info->loca + glyph_index * 4); + g2 = info->glyf + ttULONG (info->data + info->loca + glyph_index * 4 + 4); + } + + return g1==g2 ? -1 : g1; // if length is 0, return -1 +} + +STBTT_DEF int stbtt_GetGlyphBox(const stbtt_fontinfo *info, int glyph_index, int *x0, int *y0, int *x1, int *y1) +{ + int g = stbtt__GetGlyfOffset(info, glyph_index); + if (g < 0) return 0; + + if (x0) *x0 = ttSHORT(info->data + g + 2); + if (y0) *y0 = ttSHORT(info->data + g + 4); + if (x1) *x1 = ttSHORT(info->data + g + 6); + if (y1) *y1 = ttSHORT(info->data + g + 8); + return 1; +} + +STBTT_DEF int stbtt_GetCodepointBox(const stbtt_fontinfo *info, int codepoint, int *x0, int *y0, int *x1, int *y1) +{ + return stbtt_GetGlyphBox(info, stbtt_FindGlyphIndex(info,codepoint), x0,y0,x1,y1); +} + +STBTT_DEF int stbtt_IsGlyphEmpty(const stbtt_fontinfo *info, int glyph_index) +{ + stbtt_int16 numberOfContours; + int g = stbtt__GetGlyfOffset(info, glyph_index); + if (g < 0) return 1; + numberOfContours = ttSHORT(info->data + g); + return numberOfContours == 0; +} + +static int stbtt__close_shape(stbtt_vertex *vertices, int num_vertices, int was_off, int start_off, + stbtt_int32 sx, stbtt_int32 sy, stbtt_int32 scx, stbtt_int32 scy, stbtt_int32 cx, stbtt_int32 cy) +{ + if (start_off) { + if (was_off) + stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve, (cx+scx)>>1, (cy+scy)>>1, cx,cy); + stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve, sx,sy,scx,scy); + } else { + if (was_off) + stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve,sx,sy,cx,cy); + else + stbtt_setvertex(&vertices[num_vertices++], STBTT_vline,sx,sy,0,0); + } + return num_vertices; +} + +STBTT_DEF int stbtt_GetGlyphShape(const stbtt_fontinfo *info, int glyph_index, stbtt_vertex **pvertices) +{ + stbtt_int16 numberOfContours; + stbtt_uint8 *endPtsOfContours; + stbtt_uint8 *data = info->data; + stbtt_vertex *vertices=0; + int num_vertices=0; + int g = stbtt__GetGlyfOffset(info, glyph_index); + + *pvertices = NULL; + + if (g < 0) return 0; + + numberOfContours = ttSHORT(data + g); + + if (numberOfContours > 0) { + stbtt_uint8 flags=0,flagcount; + stbtt_int32 ins, i,j=0,m,n, next_move, was_off=0, off, start_off=0; + stbtt_int32 x,y,cx,cy,sx,sy, scx,scy; + stbtt_uint8 *points; + endPtsOfContours = (data + g + 10); + ins = ttUSHORT(data + g + 10 + numberOfContours * 2); + points = data + g + 10 + numberOfContours * 2 + 2 + ins; + + n = 1+ttUSHORT(endPtsOfContours + numberOfContours*2-2); + + m = n + 2*numberOfContours; // a loose bound on how many vertices we might need + vertices = (stbtt_vertex *) STBTT_malloc(m * sizeof(vertices[0]), info->userdata); + if (vertices == 0) + return 0; + + next_move = 0; + flagcount=0; + + // in first pass, we load uninterpreted data into the allocated array + // above, shifted to the end of the array so we won't overwrite it when + // we create our final data starting from the front + + off = m - n; // starting offset for uninterpreted data, regardless of how m ends up being calculated + + // first load flags + + for (i=0; i < n; ++i) { + if (flagcount == 0) { + flags = *points++; + if (flags & 8) + flagcount = *points++; + } else + --flagcount; + vertices[off+i].type = flags; + } + + // now load x coordinates + x=0; + for (i=0; i < n; ++i) { + flags = vertices[off+i].type; + if (flags & 2) { + stbtt_int16 dx = *points++; + x += (flags & 16) ? dx : -dx; // ??? + } else { + if (!(flags & 16)) { + x = x + (stbtt_int16) (points[0]*256 + points[1]); + points += 2; + } + } + vertices[off+i].x = (stbtt_int16) x; + } + + // now load y coordinates + y=0; + for (i=0; i < n; ++i) { + flags = vertices[off+i].type; + if (flags & 4) { + stbtt_int16 dy = *points++; + y += (flags & 32) ? dy : -dy; // ??? + } else { + if (!(flags & 32)) { + y = y + (stbtt_int16) (points[0]*256 + points[1]); + points += 2; + } + } + vertices[off+i].y = (stbtt_int16) y; + } + + // now convert them to our format + num_vertices=0; + sx = sy = cx = cy = scx = scy = 0; + for (i=0; i < n; ++i) { + flags = vertices[off+i].type; + x = (stbtt_int16) vertices[off+i].x; + y = (stbtt_int16) vertices[off+i].y; + + if (next_move == i) { + if (i != 0) + num_vertices = stbtt__close_shape(vertices, num_vertices, was_off, start_off, sx,sy,scx,scy,cx,cy); + + // now start the new one + start_off = !(flags & 1); + if (start_off) { + // if we start off with an off-curve point, then when we need to find a point on the curve + // where we can start, and we need to save some state for when we wraparound. + scx = x; + scy = y; + if (!(vertices[off+i+1].type & 1)) { + // next point is also a curve point, so interpolate an on-point curve + sx = (x + (stbtt_int32) vertices[off+i+1].x) >> 1; + sy = (y + (stbtt_int32) vertices[off+i+1].y) >> 1; + } else { + // otherwise just use the next point as our start point + sx = (stbtt_int32) vertices[off+i+1].x; + sy = (stbtt_int32) vertices[off+i+1].y; + ++i; // we're using point i+1 as the starting point, so skip it + } + } else { + sx = x; + sy = y; + } + stbtt_setvertex(&vertices[num_vertices++], STBTT_vmove,sx,sy,0,0); + was_off = 0; + next_move = 1 + ttUSHORT(endPtsOfContours+j*2); + ++j; + } else { + if (!(flags & 1)) { // if it's a curve + if (was_off) // two off-curve control points in a row means interpolate an on-curve midpoint + stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve, (cx+x)>>1, (cy+y)>>1, cx, cy); + cx = x; + cy = y; + was_off = 1; + } else { + if (was_off) + stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve, x,y, cx, cy); + else + stbtt_setvertex(&vertices[num_vertices++], STBTT_vline, x,y,0,0); + was_off = 0; + } + } + } + num_vertices = stbtt__close_shape(vertices, num_vertices, was_off, start_off, sx,sy,scx,scy,cx,cy); + } else if (numberOfContours == -1) { + // Compound shapes. + int more = 1; + stbtt_uint8 *comp = data + g + 10; + num_vertices = 0; + vertices = 0; + while (more) { + stbtt_uint16 flags, gidx; + int comp_num_verts = 0, i; + stbtt_vertex *comp_verts = 0, *tmp = 0; + float mtx[6] = {1,0,0,1,0,0}, m, n; + + flags = ttSHORT(comp); comp+=2; + gidx = ttSHORT(comp); comp+=2; + + if (flags & 2) { // XY values + if (flags & 1) { // shorts + mtx[4] = ttSHORT(comp); comp+=2; + mtx[5] = ttSHORT(comp); comp+=2; + } else { + mtx[4] = ttCHAR(comp); comp+=1; + mtx[5] = ttCHAR(comp); comp+=1; + } + } + else { + // @TODO handle matching point + STBTT_assert(0); + } + if (flags & (1<<3)) { // WE_HAVE_A_SCALE + mtx[0] = mtx[3] = ttSHORT(comp)/16384.0f; comp+=2; + mtx[1] = mtx[2] = 0; + } else if (flags & (1<<6)) { // WE_HAVE_AN_X_AND_YSCALE + mtx[0] = ttSHORT(comp)/16384.0f; comp+=2; + mtx[1] = mtx[2] = 0; + mtx[3] = ttSHORT(comp)/16384.0f; comp+=2; + } else if (flags & (1<<7)) { // WE_HAVE_A_TWO_BY_TWO + mtx[0] = ttSHORT(comp)/16384.0f; comp+=2; + mtx[1] = ttSHORT(comp)/16384.0f; comp+=2; + mtx[2] = ttSHORT(comp)/16384.0f; comp+=2; + mtx[3] = ttSHORT(comp)/16384.0f; comp+=2; + } + + // Find transformation scales. + m = (float) STBTT_sqrt(mtx[0]*mtx[0] + mtx[1]*mtx[1]); + n = (float) STBTT_sqrt(mtx[2]*mtx[2] + mtx[3]*mtx[3]); + + // Get indexed glyph. + comp_num_verts = stbtt_GetGlyphShape(info, gidx, &comp_verts); + if (comp_num_verts > 0) { + // Transform vertices. + for (i = 0; i < comp_num_verts; ++i) { + stbtt_vertex* v = &comp_verts[i]; + stbtt_vertex_type x,y; + x=v->x; y=v->y; + v->x = (stbtt_vertex_type)(m * (mtx[0]*x + mtx[2]*y + mtx[4])); + v->y = (stbtt_vertex_type)(n * (mtx[1]*x + mtx[3]*y + mtx[5])); + x=v->cx; y=v->cy; + v->cx = (stbtt_vertex_type)(m * (mtx[0]*x + mtx[2]*y + mtx[4])); + v->cy = (stbtt_vertex_type)(n * (mtx[1]*x + mtx[3]*y + mtx[5])); + } + // Append vertices. + tmp = (stbtt_vertex*)STBTT_malloc((num_vertices+comp_num_verts)*sizeof(stbtt_vertex), info->userdata); + if (!tmp) { + if (vertices) STBTT_free(vertices, info->userdata); + if (comp_verts) STBTT_free(comp_verts, info->userdata); + return 0; + } + if (num_vertices > 0) STBTT_memcpy(tmp, vertices, num_vertices*sizeof(stbtt_vertex)); + STBTT_memcpy(tmp+num_vertices, comp_verts, comp_num_verts*sizeof(stbtt_vertex)); + if (vertices) STBTT_free(vertices, info->userdata); + vertices = tmp; + STBTT_free(comp_verts, info->userdata); + num_vertices += comp_num_verts; + } + // More components ? + more = flags & (1<<5); + } + } else if (numberOfContours < 0) { + // @TODO other compound variations? + STBTT_assert(0); + } else { + // numberOfCounters == 0, do nothing + } + + *pvertices = vertices; + return num_vertices; +} + +STBTT_DEF void stbtt_GetGlyphHMetrics(const stbtt_fontinfo *info, int glyph_index, int *advanceWidth, int *leftSideBearing) +{ + stbtt_uint16 numOfLongHorMetrics = ttUSHORT(info->data+info->hhea + 34); + if (glyph_index < numOfLongHorMetrics) { + if (advanceWidth) *advanceWidth = ttSHORT(info->data + info->hmtx + 4*glyph_index); + if (leftSideBearing) *leftSideBearing = ttSHORT(info->data + info->hmtx + 4*glyph_index + 2); + } else { + if (advanceWidth) *advanceWidth = ttSHORT(info->data + info->hmtx + 4*(numOfLongHorMetrics-1)); + if (leftSideBearing) *leftSideBearing = ttSHORT(info->data + info->hmtx + 4*numOfLongHorMetrics + 2*(glyph_index - numOfLongHorMetrics)); + } +} + +STBTT_DEF int stbtt_GetGlyphKernAdvance(const stbtt_fontinfo *info, int glyph1, int glyph2) +{ + stbtt_uint8 *data = info->data + info->kern; + stbtt_uint32 needle, straw; + int l, r, m; + + // we only look at the first table. it must be 'horizontal' and format 0. + if (!info->kern) + return 0; + if (ttUSHORT(data+2) < 1) // number of tables, need at least 1 + return 0; + if (ttUSHORT(data+8) != 1) // horizontal flag must be set in format + return 0; + + l = 0; + r = ttUSHORT(data+10) - 1; + needle = glyph1 << 16 | glyph2; + while (l <= r) { + m = (l + r) >> 1; + straw = ttULONG(data+18+(m*6)); // note: unaligned read + if (needle < straw) + r = m - 1; + else if (needle > straw) + l = m + 1; + else + return ttSHORT(data+22+(m*6)); + } + return 0; +} + +STBTT_DEF int stbtt_GetCodepointKernAdvance(const stbtt_fontinfo *info, int ch1, int ch2) +{ + if (!info->kern) // if no kerning table, don't waste time looking up both codepoint->glyphs + return 0; + return stbtt_GetGlyphKernAdvance(info, stbtt_FindGlyphIndex(info,ch1), stbtt_FindGlyphIndex(info,ch2)); +} + +STBTT_DEF void stbtt_GetCodepointHMetrics(const stbtt_fontinfo *info, int codepoint, int *advanceWidth, int *leftSideBearing) +{ + stbtt_GetGlyphHMetrics(info, stbtt_FindGlyphIndex(info,codepoint), advanceWidth, leftSideBearing); +} + +STBTT_DEF void stbtt_GetFontVMetrics(const stbtt_fontinfo *info, int *ascent, int *descent, int *lineGap) +{ + if (ascent ) *ascent = ttSHORT(info->data+info->hhea + 4); + if (descent) *descent = ttSHORT(info->data+info->hhea + 6); + if (lineGap) *lineGap = ttSHORT(info->data+info->hhea + 8); +} + +STBTT_DEF void stbtt_GetFontBoundingBox(const stbtt_fontinfo *info, int *x0, int *y0, int *x1, int *y1) +{ + *x0 = ttSHORT(info->data + info->head + 36); + *y0 = ttSHORT(info->data + info->head + 38); + *x1 = ttSHORT(info->data + info->head + 40); + *y1 = ttSHORT(info->data + info->head + 42); +} + +STBTT_DEF float stbtt_ScaleForPixelHeight(const stbtt_fontinfo *info, float height) +{ + int fheight = ttSHORT(info->data + info->hhea + 4) - ttSHORT(info->data + info->hhea + 6); + return (float) height / fheight; +} + +STBTT_DEF float stbtt_ScaleForMappingEmToPixels(const stbtt_fontinfo *info, float pixels) +{ + int unitsPerEm = ttUSHORT(info->data + info->head + 18); + return pixels / unitsPerEm; +} + +STBTT_DEF void stbtt_FreeShape(const stbtt_fontinfo *info, stbtt_vertex *v) +{ + STBTT_free(v, info->userdata); +} + +////////////////////////////////////////////////////////////////////////////// +// +// antialiasing software rasterizer +// + +STBTT_DEF void stbtt_GetGlyphBitmapBoxSubpixel(const stbtt_fontinfo *font, int glyph, float scale_x, float scale_y,float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1) +{ + int x0,y0,x1,y1; + if (!stbtt_GetGlyphBox(font, glyph, &x0,&y0,&x1,&y1)) { + // e.g. space character + if (ix0) *ix0 = 0; + if (iy0) *iy0 = 0; + if (ix1) *ix1 = 0; + if (iy1) *iy1 = 0; + } else { + // move to integral bboxes (treating pixels as little squares, what pixels get touched)? + if (ix0) *ix0 = STBTT_ifloor( x0 * scale_x + shift_x); + if (iy0) *iy0 = STBTT_ifloor(-y1 * scale_y + shift_y); + if (ix1) *ix1 = STBTT_iceil ( x1 * scale_x + shift_x); + if (iy1) *iy1 = STBTT_iceil (-y0 * scale_y + shift_y); + } +} + +STBTT_DEF void stbtt_GetGlyphBitmapBox(const stbtt_fontinfo *font, int glyph, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1) +{ + stbtt_GetGlyphBitmapBoxSubpixel(font, glyph, scale_x, scale_y,0.0f,0.0f, ix0, iy0, ix1, iy1); +} + +STBTT_DEF void stbtt_GetCodepointBitmapBoxSubpixel(const stbtt_fontinfo *font, int codepoint, float scale_x, float scale_y, float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1) +{ + stbtt_GetGlyphBitmapBoxSubpixel(font, stbtt_FindGlyphIndex(font,codepoint), scale_x, scale_y,shift_x,shift_y, ix0,iy0,ix1,iy1); +} + +STBTT_DEF void stbtt_GetCodepointBitmapBox(const stbtt_fontinfo *font, int codepoint, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1) +{ + stbtt_GetCodepointBitmapBoxSubpixel(font, codepoint, scale_x, scale_y,0.0f,0.0f, ix0,iy0,ix1,iy1); +} + +typedef struct stbtt__edge { + float x0,y0, x1,y1; + int invert; +} stbtt__edge; + +typedef struct stbtt__active_edge +{ + int x,dx; + float ey; + struct stbtt__active_edge *next; + int valid; +} stbtt__active_edge; + +#define FIXSHIFT 10 +#define FIX (1 << FIXSHIFT) +#define FIXMASK (FIX-1) + +static stbtt__active_edge *new_active(stbtt__edge *e, int off_x, float start_point, void *userdata) +{ + stbtt__active_edge *z = (stbtt__active_edge *) STBTT_malloc(sizeof(*z), userdata); // @TODO: make a pool of these!!! + float dxdy = (e->x1 - e->x0) / (e->y1 - e->y0); + STBTT_assert(e->y0 <= start_point); + if (!z) return z; + // round dx down to avoid going too far + if (dxdy < 0) + z->dx = -STBTT_ifloor(FIX * -dxdy); + else + z->dx = STBTT_ifloor(FIX * dxdy); + z->x = STBTT_ifloor(FIX * (e->x0 + dxdy * (start_point - e->y0))); + z->x -= off_x * FIX; + z->ey = e->y1; + z->next = 0; + z->valid = e->invert ? 1 : -1; + return z; +} + +// note: this routine clips fills that extend off the edges... ideally this +// wouldn't happen, but it could happen if the truetype glyph bounding boxes +// are wrong, or if the user supplies a too-small bitmap +static void stbtt__fill_active_edges(unsigned char *scanline, int len, stbtt__active_edge *e, int max_weight) +{ + // non-zero winding fill + int x0=0, w=0; + + while (e) { + if (w == 0) { + // if we're currently at zero, we need to record the edge start point + x0 = e->x; w += e->valid; + } else { + int x1 = e->x; w += e->valid; + // if we went to zero, we need to draw + if (w == 0) { + int i = x0 >> FIXSHIFT; + int j = x1 >> FIXSHIFT; + + if (i < len && j >= 0) { + if (i == j) { + // x0,x1 are the same pixel, so compute combined coverage + scanline[i] = scanline[i] + (stbtt_uint8) ((x1 - x0) * max_weight >> FIXSHIFT); + } else { + if (i >= 0) // add antialiasing for x0 + scanline[i] = scanline[i] + (stbtt_uint8) (((FIX - (x0 & FIXMASK)) * max_weight) >> FIXSHIFT); + else + i = -1; // clip + + if (j < len) // add antialiasing for x1 + scanline[j] = scanline[j] + (stbtt_uint8) (((x1 & FIXMASK) * max_weight) >> FIXSHIFT); + else + j = len; // clip + + for (++i; i < j; ++i) // fill pixels between x0 and x1 + scanline[i] = scanline[i] + (stbtt_uint8) max_weight; + } + } + } + } + + e = e->next; + } +} + +static void stbtt__rasterize_sorted_edges(stbtt__bitmap *result, stbtt__edge *e, int n, int vsubsample, int off_x, int off_y, void *userdata) +{ + stbtt__active_edge *active = NULL; + int y,j=0; + int max_weight = (255 / vsubsample); // weight per vertical scanline + int s; // vertical subsample index + unsigned char scanline_data[512], *scanline; + + if (result->w > 512) + scanline = (unsigned char *) STBTT_malloc(result->w, userdata); + else + scanline = scanline_data; + + y = off_y * vsubsample; + e[n].y0 = (off_y + result->h) * (float) vsubsample + 1; + + while (j < result->h) { + STBTT_memset(scanline, 0, result->w); + for (s=0; s < vsubsample; ++s) { + // find center of pixel for this scanline + float scan_y = y + 0.5f; + stbtt__active_edge **step = &active; + + // update all active edges; + // remove all active edges that terminate before the center of this scanline + while (*step) { + stbtt__active_edge * z = *step; + if (z->ey <= scan_y) { + *step = z->next; // delete from list + STBTT_assert(z->valid); + z->valid = 0; + STBTT_free(z, userdata); + } else { + z->x += z->dx; // advance to position for current scanline + step = &((*step)->next); // advance through list + } + } + + // resort the list if needed + for(;;) { + int changed=0; + step = &active; + while (*step && (*step)->next) { + if ((*step)->x > (*step)->next->x) { + stbtt__active_edge *t = *step; + stbtt__active_edge *q = t->next; + + t->next = q->next; + q->next = t; + *step = q; + changed = 1; + } + step = &(*step)->next; + } + if (!changed) break; + } + + // insert all edges that start before the center of this scanline -- omit ones that also end on this scanline + while (e->y0 <= scan_y) { + if (e->y1 > scan_y) { + stbtt__active_edge *z = new_active(e, off_x, scan_y, userdata); + // find insertion point + if (active == NULL) + active = z; + else if (z->x < active->x) { + // insert at front + z->next = active; + active = z; + } else { + // find thing to insert AFTER + stbtt__active_edge *p = active; + while (p->next && p->next->x < z->x) + p = p->next; + // at this point, p->next->x is NOT < z->x + z->next = p->next; + p->next = z; + } + } + ++e; + } + + // now process all active edges in XOR fashion + if (active) + stbtt__fill_active_edges(scanline, result->w, active, max_weight); + + ++y; + } + STBTT_memcpy(result->pixels + j * result->stride, scanline, result->w); + ++j; + } + + while (active) { + stbtt__active_edge *z = active; + active = active->next; + STBTT_free(z, userdata); + } + + if (scanline != scanline_data) + STBTT_free(scanline, userdata); +} + +static int stbtt__edge_compare(const void *p, const void *q) +{ + stbtt__edge *a = (stbtt__edge *) p; + stbtt__edge *b = (stbtt__edge *) q; + + if (a->y0 < b->y0) return -1; + if (a->y0 > b->y0) return 1; + return 0; +} + +typedef struct +{ + float x,y; +} stbtt__point; + +static void stbtt__rasterize(stbtt__bitmap *result, stbtt__point *pts, int *wcount, int windings, float scale_x, float scale_y, float shift_x, float shift_y, int off_x, int off_y, int invert, void *userdata) +{ + float y_scale_inv = invert ? -scale_y : scale_y; + stbtt__edge *e; + int n,i,j,k,m; + int vsubsample = result->h < 8 ? 15 : 5; + // vsubsample should divide 255 evenly; otherwise we won't reach full opacity + + // now we have to blow out the windings into explicit edge lists + n = 0; + for (i=0; i < windings; ++i) + n += wcount[i]; + + e = (stbtt__edge *) STBTT_malloc(sizeof(*e) * (n+1), userdata); // add an extra one as a sentinel + if (e == 0) return; + n = 0; + + m=0; + for (i=0; i < windings; ++i) { + stbtt__point *p = pts + m; + m += wcount[i]; + j = wcount[i]-1; + for (k=0; k < wcount[i]; j=k++) { + int a=k,b=j; + // skip the edge if horizontal + if (p[j].y == p[k].y) + continue; + // add edge from j to k to the list + e[n].invert = 0; + if (invert ? p[j].y > p[k].y : p[j].y < p[k].y) { + e[n].invert = 1; + a=j,b=k; + } + e[n].x0 = p[a].x * scale_x + shift_x; + e[n].y0 = (p[a].y * y_scale_inv + shift_y) * vsubsample; + e[n].x1 = p[b].x * scale_x + shift_x; + e[n].y1 = (p[b].y * y_scale_inv + shift_y) * vsubsample; + ++n; + } + } + + // now sort the edges by their highest point (should snap to integer, and then by x) + STBTT_sort(e, n, sizeof(e[0]), stbtt__edge_compare); + + // now, traverse the scanlines and find the intersections on each scanline, use xor winding rule + stbtt__rasterize_sorted_edges(result, e, n, vsubsample, off_x, off_y, userdata); + + STBTT_free(e, userdata); +} + +static void stbtt__add_point(stbtt__point *points, int n, float x, float y) +{ + if (!points) return; // during first pass, it's unallocated + points[n].x = x; + points[n].y = y; +} + +// tesselate until threshhold p is happy... @TODO warped to compensate for non-linear stretching +static int stbtt__tesselate_curve(stbtt__point *points, int *num_points, float x0, float y0, float x1, float y1, float x2, float y2, float objspace_flatness_squared, int n) +{ + // midpoint + float mx = (x0 + 2*x1 + x2)/4; + float my = (y0 + 2*y1 + y2)/4; + // versus directly drawn line + float dx = (x0+x2)/2 - mx; + float dy = (y0+y2)/2 - my; + if (n > 16) // 65536 segments on one curve better be enough! + return 1; + if (dx*dx+dy*dy > objspace_flatness_squared) { // half-pixel error allowed... need to be smaller if AA + stbtt__tesselate_curve(points, num_points, x0,y0, (x0+x1)/2.0f,(y0+y1)/2.0f, mx,my, objspace_flatness_squared,n+1); + stbtt__tesselate_curve(points, num_points, mx,my, (x1+x2)/2.0f,(y1+y2)/2.0f, x2,y2, objspace_flatness_squared,n+1); + } else { + stbtt__add_point(points, *num_points,x2,y2); + *num_points = *num_points+1; + } + return 1; +} + +// returns number of contours +static stbtt__point *stbtt_FlattenCurves(stbtt_vertex *vertices, int num_verts, float objspace_flatness, int **contour_lengths, int *num_contours, void *userdata) +{ + stbtt__point *points=0; + int num_points=0; + + float objspace_flatness_squared = objspace_flatness * objspace_flatness; + int i,n=0,start=0, pass; + + // count how many "moves" there are to get the contour count + for (i=0; i < num_verts; ++i) + if (vertices[i].type == STBTT_vmove) + ++n; + + *num_contours = n; + if (n == 0) return 0; + + *contour_lengths = (int *) STBTT_malloc(sizeof(**contour_lengths) * n, userdata); + + if (*contour_lengths == 0) { + *num_contours = 0; + return 0; + } + + // make two passes through the points so we don't need to realloc + for (pass=0; pass < 2; ++pass) { + float x=0,y=0; + if (pass == 1) { + points = (stbtt__point *) STBTT_malloc(num_points * sizeof(points[0]), userdata); + if (points == NULL) goto error; + } + num_points = 0; + n= -1; + for (i=0; i < num_verts; ++i) { + switch (vertices[i].type) { + case STBTT_vmove: + // start the next contour + if (n >= 0) + (*contour_lengths)[n] = num_points - start; + ++n; + start = num_points; + + x = vertices[i].x, y = vertices[i].y; + stbtt__add_point(points, num_points++, x,y); + break; + case STBTT_vline: + x = vertices[i].x, y = vertices[i].y; + stbtt__add_point(points, num_points++, x, y); + break; + case STBTT_vcurve: + stbtt__tesselate_curve(points, &num_points, x,y, + vertices[i].cx, vertices[i].cy, + vertices[i].x, vertices[i].y, + objspace_flatness_squared, 0); + x = vertices[i].x, y = vertices[i].y; + break; + } + } + (*contour_lengths)[n] = num_points - start; + } + + return points; +error: + STBTT_free(points, userdata); + STBTT_free(*contour_lengths, userdata); + *contour_lengths = 0; + *num_contours = 0; + return NULL; +} + +STBTT_DEF void stbtt_Rasterize(stbtt__bitmap *result, float flatness_in_pixels, stbtt_vertex *vertices, int num_verts, float scale_x, float scale_y, float shift_x, float shift_y, int x_off, int y_off, int invert, void *userdata) +{ + float scale = scale_x > scale_y ? scale_y : scale_x; + int winding_count, *winding_lengths; + stbtt__point *windings = stbtt_FlattenCurves(vertices, num_verts, flatness_in_pixels / scale, &winding_lengths, &winding_count, userdata); + if (windings) { + stbtt__rasterize(result, windings, winding_lengths, winding_count, scale_x, scale_y, shift_x, shift_y, x_off, y_off, invert, userdata); + STBTT_free(winding_lengths, userdata); + STBTT_free(windings, userdata); + } +} + +STBTT_DEF void stbtt_FreeBitmap(unsigned char *bitmap, void *userdata) +{ + STBTT_free(bitmap, userdata); +} + +STBTT_DEF unsigned char *stbtt_GetGlyphBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int glyph, int *width, int *height, int *xoff, int *yoff) +{ + int ix0,iy0,ix1,iy1; + stbtt__bitmap gbm; + stbtt_vertex *vertices; + int num_verts = stbtt_GetGlyphShape(info, glyph, &vertices); + + if (scale_x == 0) scale_x = scale_y; + if (scale_y == 0) { + if (scale_x == 0) return NULL; + scale_y = scale_x; + } + + stbtt_GetGlyphBitmapBoxSubpixel(info, glyph, scale_x, scale_y, shift_x, shift_y, &ix0,&iy0,&ix1,&iy1); + + // now we get the size + gbm.w = (ix1 - ix0); + gbm.h = (iy1 - iy0); + gbm.pixels = NULL; // in case we error + + if (width ) *width = gbm.w; + if (height) *height = gbm.h; + if (xoff ) *xoff = ix0; + if (yoff ) *yoff = iy0; + + if (gbm.w && gbm.h) { + gbm.pixels = (unsigned char *) STBTT_malloc(gbm.w * gbm.h, info->userdata); + if (gbm.pixels) { + gbm.stride = gbm.w; + + stbtt_Rasterize(&gbm, 0.35f, vertices, num_verts, scale_x, scale_y, shift_x, shift_y, ix0, iy0, 1, info->userdata); + } + } + STBTT_free(vertices, info->userdata); + return gbm.pixels; +} + +STBTT_DEF unsigned char *stbtt_GetGlyphBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int glyph, int *width, int *height, int *xoff, int *yoff) +{ + return stbtt_GetGlyphBitmapSubpixel(info, scale_x, scale_y, 0.0f, 0.0f, glyph, width, height, xoff, yoff); +} + +STBTT_DEF void stbtt_MakeGlyphBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int glyph) +{ + int ix0,iy0; + stbtt_vertex *vertices; + int num_verts = stbtt_GetGlyphShape(info, glyph, &vertices); + stbtt__bitmap gbm; + + stbtt_GetGlyphBitmapBoxSubpixel(info, glyph, scale_x, scale_y, shift_x, shift_y, &ix0,&iy0,0,0); + gbm.pixels = output; + gbm.w = out_w; + gbm.h = out_h; + gbm.stride = out_stride; + + if (gbm.w && gbm.h) + stbtt_Rasterize(&gbm, 0.35f, vertices, num_verts, scale_x, scale_y, shift_x, shift_y, ix0,iy0, 1, info->userdata); + + STBTT_free(vertices, info->userdata); +} + +STBTT_DEF void stbtt_MakeGlyphBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int glyph) +{ + stbtt_MakeGlyphBitmapSubpixel(info, output, out_w, out_h, out_stride, scale_x, scale_y, 0.0f,0.0f, glyph); +} + +STBTT_DEF unsigned char *stbtt_GetCodepointBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint, int *width, int *height, int *xoff, int *yoff) +{ + return stbtt_GetGlyphBitmapSubpixel(info, scale_x, scale_y,shift_x,shift_y, stbtt_FindGlyphIndex(info,codepoint), width,height,xoff,yoff); +} + +STBTT_DEF void stbtt_MakeCodepointBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint) +{ + stbtt_MakeGlyphBitmapSubpixel(info, output, out_w, out_h, out_stride, scale_x, scale_y, shift_x, shift_y, stbtt_FindGlyphIndex(info,codepoint)); +} + +STBTT_DEF unsigned char *stbtt_GetCodepointBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int codepoint, int *width, int *height, int *xoff, int *yoff) +{ + return stbtt_GetCodepointBitmapSubpixel(info, scale_x, scale_y, 0.0f,0.0f, codepoint, width,height,xoff,yoff); +} + +STBTT_DEF void stbtt_MakeCodepointBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int codepoint) +{ + stbtt_MakeCodepointBitmapSubpixel(info, output, out_w, out_h, out_stride, scale_x, scale_y, 0.0f,0.0f, codepoint); +} + +////////////////////////////////////////////////////////////////////////////// +// +// bitmap baking +// +// This is SUPER-CRAPPY packing to keep source code small + +STBTT_DEF int stbtt_BakeFontBitmap(const unsigned char *data, int offset, // font location (use offset=0 for plain .ttf) + float pixel_height, // height of font in pixels + unsigned char *pixels, int pw, int ph, // bitmap to be filled in + int first_char, int num_chars, // characters to bake + stbtt_bakedchar *chardata) +{ + float scale; + int x,y,bottom_y, i; + stbtt_fontinfo f; + if (!stbtt_InitFont(&f, data, offset)) + return -1; + STBTT_memset(pixels, 0, pw*ph); // background of 0 around pixels + x=y=1; + bottom_y = 1; + + scale = stbtt_ScaleForPixelHeight(&f, pixel_height); + + for (i=0; i < num_chars; ++i) { + int advance, lsb, x0,y0,x1,y1,gw,gh; + int g = stbtt_FindGlyphIndex(&f, first_char + i); + stbtt_GetGlyphHMetrics(&f, g, &advance, &lsb); + stbtt_GetGlyphBitmapBox(&f, g, scale,scale, &x0,&y0,&x1,&y1); + gw = x1-x0; + gh = y1-y0; + if (x + gw + 1 >= pw) + y = bottom_y, x = 1; // advance to next row + if (y + gh + 1 >= ph) // check if it fits vertically AFTER potentially moving to next row + return -i; + STBTT_assert(x+gw < pw); + STBTT_assert(y+gh < ph); + stbtt_MakeGlyphBitmap(&f, pixels+x+y*pw, gw,gh,pw, scale,scale, g); + chardata[i].x0 = (stbtt_int16) x; + chardata[i].y0 = (stbtt_int16) y; + chardata[i].x1 = (stbtt_int16) (x + gw); + chardata[i].y1 = (stbtt_int16) (y + gh); + chardata[i].xadvance = scale * advance; + chardata[i].xoff = (float) x0; + chardata[i].yoff = (float) y0; + x = x + gw + 1; + if (y+gh+1 > bottom_y) + bottom_y = y+gh+1; + } + return bottom_y; +} + +STBTT_DEF void stbtt_GetBakedQuad(stbtt_bakedchar *chardata, int pw, int ph, int char_index, float *xpos, float *ypos, stbtt_aligned_quad *q, int opengl_fillrule) +{ + float d3d_bias = opengl_fillrule ? 0 : -0.5f; + float ipw = 1.0f / pw, iph = 1.0f / ph; + stbtt_bakedchar *b = chardata + char_index; + int round_x = STBTT_ifloor((*xpos + b->xoff) + 0.5); + int round_y = STBTT_ifloor((*ypos + b->yoff) + 0.5); + + q->x0 = round_x + d3d_bias; + q->y0 = round_y + d3d_bias; + q->x1 = round_x + b->x1 - b->x0 + d3d_bias; + q->y1 = round_y + b->y1 - b->y0 + d3d_bias; + + q->s0 = b->x0 * ipw; + q->t0 = b->y0 * iph; + q->s1 = b->x1 * ipw; + q->t1 = b->y1 * iph; + + *xpos += b->xadvance; +} + +////////////////////////////////////////////////////////////////////////////// +// +// rectangle packing replacement routines if you don't have stb_rect_pack.h +// + +#ifndef STB_RECT_PACK_VERSION +#ifdef _MSC_VER +#define STBTT__NOTUSED(v) (void)(v) +#else +#define STBTT__NOTUSED(v) (void)sizeof(v) +#endif + +typedef int stbrp_coord; + +//////////////////////////////////////////////////////////////////////////////////// +// // +// // +// COMPILER WARNING ?!?!? // +// // +// // +// if you get a compile warning due to these symbols being defined more than // +// once, move #include "stb_rect_pack.h" before #include "stb_truetype.h" // +// // +//////////////////////////////////////////////////////////////////////////////////// + +typedef struct +{ + int width,height; + int x,y,bottom_y; +} stbrp_context; + +typedef struct +{ + unsigned char x; +} stbrp_node; + +struct stbrp_rect +{ + stbrp_coord x,y; + int id,w,h,was_packed; +}; + +static void stbrp_init_target(stbrp_context *con, int pw, int ph, stbrp_node *nodes, int num_nodes) +{ + con->width = pw; + con->height = ph; + con->x = 0; + con->y = 0; + con->bottom_y = 0; + STBTT__NOTUSED(nodes); + STBTT__NOTUSED(num_nodes); +} + +static void stbrp_pack_rects(stbrp_context *con, stbrp_rect *rects, int num_rects) +{ + int i; + for (i=0; i < num_rects; ++i) { + if (con->x + rects[i].w > con->width) { + con->x = 0; + con->y = con->bottom_y; + } + if (con->y + rects[i].h > con->height) + break; + rects[i].x = con->x; + rects[i].y = con->y; + rects[i].was_packed = 1; + con->x += rects[i].w; + if (con->y + rects[i].h > con->bottom_y) + con->bottom_y = con->y + rects[i].h; + } + for ( ; i < num_rects; ++i) + rects[i].was_packed = 0; +} +#endif + +////////////////////////////////////////////////////////////////////////////// +// +// bitmap baking +// +// This is SUPER-AWESOME (tm Ryan Gordon) packing using stb_rect_pack.h. If +// stb_rect_pack.h isn't available, it uses the BakeFontBitmap strategy. + +STBTT_DEF int stbtt_PackBegin(stbtt_pack_context *spc, unsigned char *pixels, int pw, int ph, int stride_in_bytes, int padding, void *alloc_context) +{ + stbrp_context *context = (stbrp_context *) STBTT_malloc(sizeof(*context) ,alloc_context); + int num_nodes = pw - padding; + stbrp_node *nodes = (stbrp_node *) STBTT_malloc(sizeof(*nodes ) * num_nodes,alloc_context); + + if (context == NULL || nodes == NULL) { + if (context != NULL) STBTT_free(context, alloc_context); + if (nodes != NULL) STBTT_free(nodes , alloc_context); + return 0; + } + + spc->user_allocator_context = alloc_context; + spc->width = pw; + spc->height = ph; + spc->pixels = pixels; + spc->pack_info = context; + spc->nodes = nodes; + spc->padding = padding; + spc->stride_in_bytes = stride_in_bytes != 0 ? stride_in_bytes : pw; + spc->h_oversample = 1; + spc->v_oversample = 1; + + stbrp_init_target(context, pw-padding, ph-padding, nodes, num_nodes); + + if (pixels) + STBTT_memset(pixels, 0, pw*ph); // background of 0 around pixels + + return 1; +} + +STBTT_DEF void stbtt_PackEnd (stbtt_pack_context *spc) +{ + STBTT_free(spc->nodes , spc->user_allocator_context); + STBTT_free(spc->pack_info, spc->user_allocator_context); +} + +STBTT_DEF void stbtt_PackSetOversampling(stbtt_pack_context *spc, unsigned int h_oversample, unsigned int v_oversample) +{ + STBTT_assert(h_oversample <= STBTT_MAX_OVERSAMPLE); + STBTT_assert(v_oversample <= STBTT_MAX_OVERSAMPLE); + if (h_oversample <= STBTT_MAX_OVERSAMPLE) + spc->h_oversample = h_oversample; + if (v_oversample <= STBTT_MAX_OVERSAMPLE) + spc->v_oversample = v_oversample; +} + +#define STBTT__OVER_MASK (STBTT_MAX_OVERSAMPLE-1) + +static void stbtt__h_prefilter(unsigned char *pixels, int w, int h, int stride_in_bytes, unsigned int kernel_width) +{ + unsigned char buffer[STBTT_MAX_OVERSAMPLE]; + int safe_w = w - kernel_width; + int j; + for (j=0; j < h; ++j) { + int i; + unsigned int total; + memset(buffer, 0, kernel_width); + + total = 0; + + // make kernel_width a constant in common cases so compiler can optimize out the divide + switch (kernel_width) { + case 2: + for (i=0; i <= safe_w; ++i) { + total += pixels[i] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i]; + pixels[i] = (unsigned char) (total / 2); + } + break; + case 3: + for (i=0; i <= safe_w; ++i) { + total += pixels[i] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i]; + pixels[i] = (unsigned char) (total / 3); + } + break; + case 4: + for (i=0; i <= safe_w; ++i) { + total += pixels[i] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i]; + pixels[i] = (unsigned char) (total / 4); + } + break; + default: + for (i=0; i <= safe_w; ++i) { + total += pixels[i] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i]; + pixels[i] = (unsigned char) (total / kernel_width); + } + break; + } + + for (; i < w; ++i) { + STBTT_assert(pixels[i] == 0); + total -= buffer[i & STBTT__OVER_MASK]; + pixels[i] = (unsigned char) (total / kernel_width); + } + + pixels += stride_in_bytes; + } +} + +static void stbtt__v_prefilter(unsigned char *pixels, int w, int h, int stride_in_bytes, unsigned int kernel_width) +{ + unsigned char buffer[STBTT_MAX_OVERSAMPLE]; + int safe_h = h - kernel_width; + int j; + for (j=0; j < w; ++j) { + int i; + unsigned int total; + memset(buffer, 0, kernel_width); + + total = 0; + + // make kernel_width a constant in common cases so compiler can optimize out the divide + switch (kernel_width) { + case 2: + for (i=0; i <= safe_h; ++i) { + total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes]; + pixels[i*stride_in_bytes] = (unsigned char) (total / 2); + } + break; + case 3: + for (i=0; i <= safe_h; ++i) { + total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes]; + pixels[i*stride_in_bytes] = (unsigned char) (total / 3); + } + break; + case 4: + for (i=0; i <= safe_h; ++i) { + total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes]; + pixels[i*stride_in_bytes] = (unsigned char) (total / 4); + } + break; + default: + for (i=0; i <= safe_h; ++i) { + total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes]; + pixels[i*stride_in_bytes] = (unsigned char) (total / kernel_width); + } + break; + } + + for (; i < h; ++i) { + STBTT_assert(pixels[i*stride_in_bytes] == 0); + total -= buffer[i & STBTT__OVER_MASK]; + pixels[i*stride_in_bytes] = (unsigned char) (total / kernel_width); + } + + pixels += 1; + } +} + +static float stbtt__oversample_shift(int oversample) +{ + if (!oversample) + return 0.0f; + + // The prefilter is a box filter of width "oversample", + // which shifts phase by (oversample - 1)/2 pixels in + // oversampled space. We want to shift in the opposite + // direction to counter this. + return (float)-(oversample - 1) / (2.0f * (float)oversample); +} + +// rects array must be big enough to accommodate all characters in the given ranges +STBTT_DEF int stbtt_PackFontRangesGatherRects(stbtt_pack_context *spc, stbtt_fontinfo *info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects) +{ + int i,j,k; + + k=0; + for (i=0; i < num_ranges; ++i) { + float fh = ranges[i].font_size; + float scale = fh > 0 ? stbtt_ScaleForPixelHeight(info, fh) : stbtt_ScaleForMappingEmToPixels(info, -fh); + for (j=0; j < ranges[i].num_chars_in_range; ++j) { + int x0,y0,x1,y1; + int glyph = stbtt_FindGlyphIndex(info,ranges[i].first_unicode_char_in_range + j); + if (glyph) { + stbtt_GetGlyphBitmapBoxSubpixel(info,glyph, + scale * spc->h_oversample, + scale * spc->v_oversample, + 0,0, + &x0,&y0,&x1,&y1); + rects[k].w = (stbrp_coord) (x1-x0 + spc->padding + spc->h_oversample-1); + rects[k].h = (stbrp_coord) (y1-y0 + spc->padding + spc->v_oversample-1); + } else { + rects[k].w = rects[k].h = 1; + } + ++k; + } + } + + return k; +} + +// rects array must be big enough to accommodate all characters in the given ranges +STBTT_DEF int stbtt_PackFontRangesRenderIntoRects(stbtt_pack_context *spc, stbtt_fontinfo *info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects) +{ + float recip_h = 1.0f / spc->h_oversample; + float recip_v = 1.0f / spc->v_oversample; + float sub_x = stbtt__oversample_shift(spc->h_oversample); + float sub_y = stbtt__oversample_shift(spc->v_oversample); + int i,j,k, return_value = 1; + + k = 0; + for (i=0; i < num_ranges; ++i) { + float fh = ranges[i].font_size; + float scale = fh > 0 ? stbtt_ScaleForPixelHeight(info, fh) : stbtt_ScaleForMappingEmToPixels(info, -fh); + for (j=0; j < ranges[i].num_chars_in_range; ++j) { + stbrp_rect *r = &rects[k]; + if (r->was_packed) { + stbtt_packedchar *bc = &ranges[i].chardata_for_range[j]; + int advance, lsb, x0,y0,x1,y1; + int glyph = stbtt_FindGlyphIndex(info, ranges[i].first_unicode_char_in_range + j); + stbrp_coord pad = (stbrp_coord) spc->padding; + + // pad on left and top + r->x += pad; + r->y += pad; + r->w -= pad; + r->h -= pad; + stbtt_GetGlyphHMetrics(info, glyph, &advance, &lsb); + stbtt_GetGlyphBitmapBox(info, glyph, + scale * spc->h_oversample, + scale * spc->v_oversample, + &x0,&y0,&x1,&y1); + stbtt_MakeGlyphBitmapSubpixel(info, + spc->pixels + r->x + r->y*spc->stride_in_bytes, + r->w - spc->h_oversample+1, + r->h - spc->v_oversample+1, + spc->stride_in_bytes, + scale * spc->h_oversample, + scale * spc->v_oversample, + 0,0, + glyph); + + if (spc->h_oversample > 1) + stbtt__h_prefilter(spc->pixels + r->x + r->y*spc->stride_in_bytes, + r->w, r->h, spc->stride_in_bytes, + spc->h_oversample); + + if (spc->v_oversample > 1) + stbtt__v_prefilter(spc->pixels + r->x + r->y*spc->stride_in_bytes, + r->w, r->h, spc->stride_in_bytes, + spc->v_oversample); + + bc->x0 = (stbtt_int16) r->x; + bc->y0 = (stbtt_int16) r->y; + bc->x1 = (stbtt_int16) (r->x + r->w); + bc->y1 = (stbtt_int16) (r->y + r->h); + bc->xadvance = scale * advance; + bc->xoff = (float) x0 * recip_h + sub_x; + bc->yoff = (float) y0 * recip_v + sub_y; + bc->xoff2 = (x0 + r->w) * recip_h + sub_x; + bc->yoff2 = (y0 + r->h) * recip_v + sub_y; + } else { + return_value = 0; // if any fail, report failure + } + + ++k; + } + } + + return return_value; +} + +STBTT_DEF int stbtt_PackFontRanges(stbtt_pack_context *spc, unsigned char *fontdata, int font_index, stbtt_pack_range *ranges, int num_ranges) +{ + stbtt_fontinfo info; + int i,j,n, return_value = 1; + stbrp_context *context = (stbrp_context *) spc->pack_info; + stbrp_rect *rects; + + // flag all characters as NOT packed + for (i=0; i < num_ranges; ++i) + for (j=0; j < ranges[i].num_chars_in_range; ++j) + ranges[i].chardata_for_range[j].x0 = + ranges[i].chardata_for_range[j].y0 = + ranges[i].chardata_for_range[j].x1 = + ranges[i].chardata_for_range[j].y1 = 0; + + n = 0; + for (i=0; i < num_ranges; ++i) + n += ranges[i].num_chars_in_range; + + rects = (stbrp_rect *) STBTT_malloc(sizeof(*rects) * n, spc->user_allocator_context); + if (rects == NULL) + return 0; + + stbtt_InitFont(&info, fontdata, stbtt_GetFontOffsetForIndex(fontdata,font_index)); + + n = stbtt_PackFontRangesGatherRects(spc, &info, ranges, num_ranges, rects); + + stbrp_pack_rects(context, rects, n); + + return_value = stbtt_PackFontRangesRenderIntoRects(spc, &info, ranges, num_ranges, rects); + + return return_value; +} + +STBTT_DEF int stbtt_PackFontRange(stbtt_pack_context *spc, unsigned char *fontdata, int font_index, float font_size, + int first_unicode_char_in_range, int num_chars_in_range, stbtt_packedchar *chardata_for_range) +{ + stbtt_pack_range range; + range.first_unicode_char_in_range = first_unicode_char_in_range; + range.num_chars_in_range = num_chars_in_range; + range.chardata_for_range = chardata_for_range; + range.font_size = font_size; + return stbtt_PackFontRanges(spc, fontdata, font_index, &range, 1); +} + +STBTT_DEF void stbtt_GetPackedQuad(stbtt_packedchar *chardata, int pw, int ph, int char_index, float *xpos, float *ypos, stbtt_aligned_quad *q, int align_to_integer) +{ + float ipw = 1.0f / pw, iph = 1.0f / ph; + stbtt_packedchar *b = chardata + char_index; + + if (align_to_integer) { + float x = (float) STBTT_ifloor((*xpos + b->xoff) + 0.5); + float y = (float) STBTT_ifloor((*ypos + b->yoff) + 0.5); + q->x0 = x; + q->y0 = y; + q->x1 = x + b->xoff2 - b->xoff; + q->y1 = y + b->yoff2 - b->yoff; + } else { + q->x0 = *xpos + b->xoff; + q->y0 = *ypos + b->yoff; + q->x1 = *xpos + b->xoff2; + q->y1 = *ypos + b->yoff2; + } + + q->s0 = b->x0 * ipw; + q->t0 = b->y0 * iph; + q->s1 = b->x1 * ipw; + q->t1 = b->y1 * iph; + + *xpos += b->xadvance; +} + + +////////////////////////////////////////////////////////////////////////////// +// +// font name matching -- recommended not to use this +// + +// check if a utf8 string contains a prefix which is the utf16 string; if so return length of matching utf8 string +static stbtt_int32 stbtt__CompareUTF8toUTF16_bigendian_prefix(const stbtt_uint8 *s1, stbtt_int32 len1, const stbtt_uint8 *s2, stbtt_int32 len2) +{ + stbtt_int32 i=0; + + // convert utf16 to utf8 and compare the results while converting + while (len2) { + stbtt_uint16 ch = s2[0]*256 + s2[1]; + if (ch < 0x80) { + if (i >= len1) return -1; + if (s1[i++] != ch) return -1; + } else if (ch < 0x800) { + if (i+1 >= len1) return -1; + if (s1[i++] != 0xc0 + (ch >> 6)) return -1; + if (s1[i++] != 0x80 + (ch & 0x3f)) return -1; + } else if (ch >= 0xd800 && ch < 0xdc00) { + stbtt_uint32 c; + stbtt_uint16 ch2 = s2[2]*256 + s2[3]; + if (i+3 >= len1) return -1; + c = ((ch - 0xd800) << 10) + (ch2 - 0xdc00) + 0x10000; + if (s1[i++] != 0xf0 + (c >> 18)) return -1; + if (s1[i++] != 0x80 + ((c >> 12) & 0x3f)) return -1; + if (s1[i++] != 0x80 + ((c >> 6) & 0x3f)) return -1; + if (s1[i++] != 0x80 + ((c ) & 0x3f)) return -1; + s2 += 2; // plus another 2 below + len2 -= 2; + } else if (ch >= 0xdc00 && ch < 0xe000) { + return -1; + } else { + if (i+2 >= len1) return -1; + if (s1[i++] != 0xe0 + (ch >> 12)) return -1; + if (s1[i++] != 0x80 + ((ch >> 6) & 0x3f)) return -1; + if (s1[i++] != 0x80 + ((ch ) & 0x3f)) return -1; + } + s2 += 2; + len2 -= 2; + } + return i; +} + +STBTT_DEF int stbtt_CompareUTF8toUTF16_bigendian(const char *s1, int len1, const char *s2, int len2) +{ + return len1 == stbtt__CompareUTF8toUTF16_bigendian_prefix((const stbtt_uint8*) s1, len1, (const stbtt_uint8*) s2, len2); +} + +// returns results in whatever encoding you request... but note that 2-byte encodings +// will be BIG-ENDIAN... use stbtt_CompareUTF8toUTF16_bigendian() to compare +STBTT_DEF const char *stbtt_GetFontNameString(const stbtt_fontinfo *font, int *length, int platformID, int encodingID, int languageID, int nameID) +{ + stbtt_int32 i,count,stringOffset; + stbtt_uint8 *fc = font->data; + stbtt_uint32 offset = font->fontstart; + stbtt_uint32 nm = stbtt__find_table(fc, offset, "name"); + if (!nm) return NULL; + + count = ttUSHORT(fc+nm+2); + stringOffset = nm + ttUSHORT(fc+nm+4); + for (i=0; i < count; ++i) { + stbtt_uint32 loc = nm + 6 + 12 * i; + if (platformID == ttUSHORT(fc+loc+0) && encodingID == ttUSHORT(fc+loc+2) + && languageID == ttUSHORT(fc+loc+4) && nameID == ttUSHORT(fc+loc+6)) { + *length = ttUSHORT(fc+loc+8); + return (const char *) (fc+stringOffset+ttUSHORT(fc+loc+10)); + } + } + return NULL; +} + +static int stbtt__matchpair(stbtt_uint8 *fc, stbtt_uint32 nm, stbtt_uint8 *name, stbtt_int32 nlen, stbtt_int32 target_id, stbtt_int32 next_id) +{ + stbtt_int32 i; + stbtt_int32 count = ttUSHORT(fc+nm+2); + stbtt_int32 stringOffset = nm + ttUSHORT(fc+nm+4); + + for (i=0; i < count; ++i) { + stbtt_uint32 loc = nm + 6 + 12 * i; + stbtt_int32 id = ttUSHORT(fc+loc+6); + if (id == target_id) { + // find the encoding + stbtt_int32 platform = ttUSHORT(fc+loc+0), encoding = ttUSHORT(fc+loc+2), language = ttUSHORT(fc+loc+4); + + // is this a Unicode encoding? + if (platform == 0 || (platform == 3 && encoding == 1) || (platform == 3 && encoding == 10)) { + stbtt_int32 slen = ttUSHORT(fc+loc+8); + stbtt_int32 off = ttUSHORT(fc+loc+10); + + // check if there's a prefix match + stbtt_int32 matchlen = stbtt__CompareUTF8toUTF16_bigendian_prefix(name, nlen, fc+stringOffset+off,slen); + if (matchlen >= 0) { + // check for target_id+1 immediately following, with same encoding & language + if (i+1 < count && ttUSHORT(fc+loc+12+6) == next_id && ttUSHORT(fc+loc+12) == platform && ttUSHORT(fc+loc+12+2) == encoding && ttUSHORT(fc+loc+12+4) == language) { + slen = ttUSHORT(fc+loc+12+8); + off = ttUSHORT(fc+loc+12+10); + if (slen == 0) { + if (matchlen == nlen) + return 1; + } else if (matchlen < nlen && name[matchlen] == ' ') { + ++matchlen; + if (stbtt_CompareUTF8toUTF16_bigendian((char*) (name+matchlen), nlen-matchlen, (char*)(fc+stringOffset+off),slen)) + return 1; + } + } else { + // if nothing immediately following + if (matchlen == nlen) + return 1; + } + } + } + + // @TODO handle other encodings + } + } + return 0; +} + +static int stbtt__matches(stbtt_uint8 *fc, stbtt_uint32 offset, stbtt_uint8 *name, stbtt_int32 flags) +{ + stbtt_int32 nlen = (stbtt_int32) STBTT_strlen((char *) name); + stbtt_uint32 nm,hd; + if (!stbtt__isfont(fc+offset)) return 0; + + // check italics/bold/underline flags in macStyle... + if (flags) { + hd = stbtt__find_table(fc, offset, "head"); + if ((ttUSHORT(fc+hd+44) & 7) != (flags & 7)) return 0; + } + + nm = stbtt__find_table(fc, offset, "name"); + if (!nm) return 0; + + if (flags) { + // if we checked the macStyle flags, then just check the family and ignore the subfamily + if (stbtt__matchpair(fc, nm, name, nlen, 16, -1)) return 1; + if (stbtt__matchpair(fc, nm, name, nlen, 1, -1)) return 1; + if (stbtt__matchpair(fc, nm, name, nlen, 3, -1)) return 1; + } else { + if (stbtt__matchpair(fc, nm, name, nlen, 16, 17)) return 1; + if (stbtt__matchpair(fc, nm, name, nlen, 1, 2)) return 1; + if (stbtt__matchpair(fc, nm, name, nlen, 3, -1)) return 1; + } + + return 0; +} + +STBTT_DEF int stbtt_FindMatchingFont(const unsigned char *font_collection, const char *name_utf8, stbtt_int32 flags) +{ + stbtt_int32 i; + for (i=0;;++i) { + stbtt_int32 off = stbtt_GetFontOffsetForIndex(font_collection, i); + if (off < 0) return off; + if (stbtt__matches((stbtt_uint8 *) font_collection, off, (stbtt_uint8*) name_utf8, flags)) + return off; + } +} + +#endif // STB_TRUETYPE_IMPLEMENTATION diff --git a/testbed/src/Gui.cpp b/testbed/src/Gui.cpp index e8c9552f..d826ae8b 100644 --- a/testbed/src/Gui.cpp +++ b/testbed/src/Gui.cpp @@ -25,18 +25,371 @@ // Libraries #include "Gui.h" +#include + +GLFWwindow* Gui::mWindow = NULL; +double Gui::g_Time = 0.0f; +bool Gui::g_MousePressed[3] = {false, false, false}; +float Gui::g_MouseWheel = 0.0f; +GLuint Gui::g_FontTexture = 0; +int Gui::g_ShaderHandle = 0; +int Gui::g_VertHandle = 0; +int Gui::g_FragHandle = 0; +int Gui::g_AttribLocationTex = 0; +int Gui::g_AttribLocationProjMtx = 0; +int Gui::g_AttribLocationPosition = 0; +int Gui::g_AttribLocationUV = 0; +int Gui::g_AttribLocationColor = 0; +size_t Gui::g_VboSize = 0; +unsigned int Gui::g_VboHandle = 0; +unsigned int Gui::g_VaoHandle = 0; // Constructor Gui::Gui() { - + g_Time = 0.0f; + g_MousePressed[0] = false; + g_MousePressed[1] = false; + g_MousePressed[2] = false; + g_MouseWheel = 0.0f; + g_FontTexture = 0; + g_ShaderHandle = 0, g_VertHandle = 0, g_FragHandle = 0; + g_AttribLocationTex = 0, g_AttribLocationProjMtx = 0; + g_AttribLocationPosition = 0, g_AttribLocationUV = 0, g_AttribLocationColor = 0; + g_VboSize = 0; + g_VboHandle = 0, g_VaoHandle = 0; } // Destructor Gui::~Gui() { + if (g_VaoHandle) glDeleteVertexArrays(1, &g_VaoHandle); + if (g_VboHandle) glDeleteBuffers(1, &g_VboHandle); + g_VaoHandle = 0; + g_VboHandle = 0; + + glDetachShader(g_ShaderHandle, g_VertHandle); + glDeleteShader(g_VertHandle); + g_VertHandle = 0; + + glDetachShader(g_ShaderHandle, g_FragHandle); + glDeleteShader(g_FragHandle); + g_FragHandle = 0; + + glDeleteProgram(g_ShaderHandle); + g_ShaderHandle = 0; + + if (g_FontTexture) + { + glDeleteTextures(1, &g_FontTexture); + ImGui::GetIO().Fonts->TexID = 0; + g_FontTexture = 0; + } + ImGui::Shutdown(); +} + +// Create and return the singleton instance of this class +Gui& Gui::getInstance() { + static Gui instance; + return instance; +} + +/// Initialize the GUI +void Gui::init() { + + ImGuiIO& io = ImGui::GetIO(); + io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB; + io.KeyMap[ImGuiKey_LeftArrow] = GLFW_KEY_LEFT; + io.KeyMap[ImGuiKey_RightArrow] = GLFW_KEY_RIGHT; + io.KeyMap[ImGuiKey_UpArrow] = GLFW_KEY_UP; + io.KeyMap[ImGuiKey_DownArrow] = GLFW_KEY_DOWN; + io.KeyMap[ImGuiKey_Home] = GLFW_KEY_HOME; + io.KeyMap[ImGuiKey_End] = GLFW_KEY_END; + io.KeyMap[ImGuiKey_Delete] = GLFW_KEY_DELETE; + io.KeyMap[ImGuiKey_Backspace] = GLFW_KEY_BACKSPACE; + io.KeyMap[ImGuiKey_Enter] = GLFW_KEY_ENTER; + io.KeyMap[ImGuiKey_Escape] = GLFW_KEY_ESCAPE; + io.KeyMap[ImGuiKey_A] = GLFW_KEY_A; + io.KeyMap[ImGuiKey_C] = GLFW_KEY_C; + io.KeyMap[ImGuiKey_V] = GLFW_KEY_V; + io.KeyMap[ImGuiKey_X] = GLFW_KEY_X; + io.KeyMap[ImGuiKey_Y] = GLFW_KEY_Y; + io.KeyMap[ImGuiKey_Z] = GLFW_KEY_Z; + + io.RenderDrawListsFn = renderDrawLists; + io.SetClipboardTextFn = setClipboardText; + io.GetClipboardTextFn = getClipboardText; +} + +void Gui::createDeviceObjects() { + + const GLchar *vertex_shader = + "#version 330\n" + "uniform mat4 ProjMtx;\n" + "in vec2 Position;\n" + "in vec2 UV;\n" + "in vec4 Color;\n" + "out vec2 Frag_UV;\n" + "out vec4 Frag_Color;\n" + "void main()\n" + "{\n" + " Frag_UV = UV;\n" + " Frag_Color = Color;\n" + " gl_Position = ProjMtx * vec4(Position.xy,0,1);\n" + "}\n"; + + const GLchar* fragment_shader = + "#version 330\n" + "uniform sampler2D Texture;\n" + "in vec2 Frag_UV;\n" + "in vec4 Frag_Color;\n" + "out vec4 Out_Color;\n" + "void main()\n" + "{\n" + " Out_Color = Frag_Color * texture( Texture, Frag_UV.st);\n" + "}\n"; + + g_ShaderHandle = glCreateProgram(); + g_VertHandle = glCreateShader(GL_VERTEX_SHADER); + g_FragHandle = glCreateShader(GL_FRAGMENT_SHADER); + glShaderSource(g_VertHandle, 1, &vertex_shader, 0); + glShaderSource(g_FragHandle, 1, &fragment_shader, 0); + glCompileShader(g_VertHandle); + glCompileShader(g_FragHandle); + glAttachShader(g_ShaderHandle, g_VertHandle); + glAttachShader(g_ShaderHandle, g_FragHandle); + glLinkProgram(g_ShaderHandle); + + g_AttribLocationTex = glGetUniformLocation(g_ShaderHandle, "Texture"); + g_AttribLocationProjMtx = glGetUniformLocation(g_ShaderHandle, "ProjMtx"); + g_AttribLocationPosition = glGetAttribLocation(g_ShaderHandle, "Position"); + g_AttribLocationUV = glGetAttribLocation(g_ShaderHandle, "UV"); + g_AttribLocationColor = glGetAttribLocation(g_ShaderHandle, "Color"); + + glGenBuffers(1, &g_VboHandle); + + glGenVertexArrays(1, &g_VaoHandle); + glBindVertexArray(g_VaoHandle); + glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle); + glEnableVertexAttribArray(g_AttribLocationPosition); + glEnableVertexAttribArray(g_AttribLocationUV); + glEnableVertexAttribArray(g_AttribLocationColor); + + #define OFFSETOF(TYPE, ELEMENT) ((size_t)&(((TYPE *)0)->ELEMENT)) + glVertexAttribPointer(g_AttribLocationPosition, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, pos)); + glVertexAttribPointer(g_AttribLocationUV, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, uv)); + glVertexAttribPointer(g_AttribLocationColor, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, col)); + #undef OFFSETOF + glBindVertexArray(0); + glBindBuffer(GL_ARRAY_BUFFER, 0); + + createFontTextures(); } // Display the GUI -void Gui::display() { +void Gui::render() { + ImGuiIO& io = ImGui::GetIO(); + //glfwPollEvents(); + beginNewFrame(); + + bool show_test_window = true; + bool show_another_window = false; + ImVec4 clear_color = ImColor(114, 144, 154); + + // 1. Show a simple window + // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug" + { + static float f = 0.0f; + ImGui::Text("Hello, world!"); + ImGui::SliderFloat("float", &f, 0.0f, 1.0f); + ImGui::ColorEdit3("clear color", (float*)&clear_color); + if (ImGui::Button("Test Window")) int test = 1; + if (ImGui::Button("Another Window")) int test = 1; + ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate); + } + + // 2. Show another simple window, this time using an explicit Begin/End pair + //if (show_another_window) + { + ImGui::SetNextWindowSize(ImVec2(200,100), ImGuiSetCond_FirstUseEver); + ImGui::Begin("Another Window", &show_another_window); + ImGui::Text("Hello"); + ImGui::End(); + } + + // 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow() + //if (show_test_window) + { + ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCond_FirstUseEver); + ImGui::ShowTestWindow(&show_test_window); + } + + // Render the GUI + ImGui::Render(); +} + +void Gui::beginNewFrame() { + + if (!g_FontTexture) + createDeviceObjects(); + + ImGuiIO& io = ImGui::GetIO(); + + // Setup display size (every frame to accommodate for window resizing) + int w, h; + int display_w, display_h; + glfwGetWindowSize(mWindow, &w, &h); + glfwGetFramebufferSize(mWindow, &display_w, &display_h); + io.DisplaySize = ImVec2((float)display_w, (float)display_h); + + // Setup time step + double current_time = glfwGetTime(); + io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f); + g_Time = current_time; + + // Setup inputs + // (we already got mouse wheel, keyboard keys & characters from glfw callbacks polled in glfwPollEvents()) + if (glfwGetWindowAttrib(mWindow, GLFW_FOCUSED)) + { + double mouse_x, mouse_y; + glfwGetCursorPos(mWindow, &mouse_x, &mouse_y); + mouse_x *= (float)display_w / w; // Convert mouse coordinates to pixels + mouse_y *= (float)display_h / h; + io.MousePos = ImVec2((float)mouse_x, (float)mouse_y); // Mouse position, in pixels (set to -1,-1 if no mouse / on another screen, etc.) + } + else + { + io.MousePos = ImVec2(-1,-1); + } + + for (int i = 0; i < 3; i++) + { + io.MouseDown[i] = g_MousePressed[i] || glfwGetMouseButton(mWindow, i) != 0; // If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame. + g_MousePressed[i] = false; + } + + io.MouseWheel = g_MouseWheel; + g_MouseWheel = 0.0f; + + // Hide/show hardware mouse cursor + glfwSetInputMode(mWindow, GLFW_CURSOR, io.MouseDrawCursor ? GLFW_CURSOR_HIDDEN : GLFW_CURSOR_NORMAL); + + // Start the frame + ImGui::NewFrame(); +} + +void Gui::createFontTextures() +{ + ImGuiIO& io = ImGui::GetIO(); + + unsigned char* pixels; + int width, height; + io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height); // Load as RGBA 32-bits for OpenGL3 demo because it is more likely to be compatible with user's existing shader. + + glGenTextures(1, &g_FontTexture); + glBindTexture(GL_TEXTURE_2D, g_FontTexture); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels); + + // Store our identifier + io.Fonts->TexID = (void *)(intptr_t)g_FontTexture; +} + +// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure) +// If text or lines are blurry when integrating ImGui in your engine: +// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f) +void Gui::renderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count) +{ + if (cmd_lists_count == 0) + return; + + // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled + GLint last_program, last_texture; + glGetIntegerv(GL_CURRENT_PROGRAM, &last_program); + glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture); + glEnable(GL_BLEND); + glBlendEquation(GL_FUNC_ADD); + glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); + glDisable(GL_CULL_FACE); + glDisable(GL_DEPTH_TEST); + glEnable(GL_SCISSOR_TEST); + glActiveTexture(GL_TEXTURE0); + + // Setup orthographic projection matrix + const float width = ImGui::GetIO().DisplaySize.x; + const float height = ImGui::GetIO().DisplaySize.y; + const float ortho_projection[4][4] = + { + { 2.0f/width, 0.0f, 0.0f, 0.0f }, + { 0.0f, 2.0f/-height, 0.0f, 0.0f }, + { 0.0f, 0.0f, -1.0f, 0.0f }, + { -1.0f, 1.0f, 0.0f, 1.0f }, + }; + glUseProgram(g_ShaderHandle); + glUniform1i(g_AttribLocationTex, 0); + glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]); + + // Grow our buffer according to what we need + size_t total_vtx_count = 0; + for (int n = 0; n < cmd_lists_count; n++) + total_vtx_count += cmd_lists[n]->vtx_buffer.size(); + glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle); + size_t needed_vtx_size = total_vtx_count * sizeof(ImDrawVert); + if (g_VboSize < needed_vtx_size) + { + g_VboSize = needed_vtx_size + 5000 * sizeof(ImDrawVert); // Grow buffer + glBufferData(GL_ARRAY_BUFFER, g_VboSize, NULL, GL_STREAM_DRAW); + } + + // Copy and convert all vertices into a single contiguous buffer + unsigned char* buffer_data = (unsigned char*)glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY); + if (!buffer_data) + return; + for (int n = 0; n < cmd_lists_count; n++) + { + const ImDrawList* cmd_list = cmd_lists[n]; + memcpy(buffer_data, &cmd_list->vtx_buffer[0], cmd_list->vtx_buffer.size() * sizeof(ImDrawVert)); + buffer_data += cmd_list->vtx_buffer.size() * sizeof(ImDrawVert); + } + glUnmapBuffer(GL_ARRAY_BUFFER); + glBindBuffer(GL_ARRAY_BUFFER, 0); + glBindVertexArray(g_VaoHandle); + + int cmd_offset = 0; + for (int n = 0; n < cmd_lists_count; n++) + { + const ImDrawList* cmd_list = cmd_lists[n]; + int vtx_offset = cmd_offset; + const ImDrawCmd* pcmd_end = cmd_list->commands.end(); + for (const ImDrawCmd* pcmd = cmd_list->commands.begin(); pcmd != pcmd_end; pcmd++) + { + if (pcmd->user_callback) + { + pcmd->user_callback(cmd_list, pcmd); + } + else + { + glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->texture_id); + glScissor((int)pcmd->clip_rect.x, (int)(height - pcmd->clip_rect.w), (int)(pcmd->clip_rect.z - pcmd->clip_rect.x), (int)(pcmd->clip_rect.w - pcmd->clip_rect.y)); + glDrawArrays(GL_TRIANGLES, vtx_offset, pcmd->vtx_count); + } + vtx_offset += pcmd->vtx_count; + } + cmd_offset = vtx_offset; + } + + // Restore modified state + glBindVertexArray(0); + glUseProgram(last_program); + glDisable(GL_SCISSOR_TEST); + glBindTexture(GL_TEXTURE_2D, last_texture); +} + +const char* Gui::getClipboardText() { + return glfwGetClipboardString(mWindow); +} + +void Gui::setClipboardText(const char* text) { + glfwSetClipboardString(mWindow, text); } diff --git a/testbed/src/Gui.h b/testbed/src/Gui.h index b2853d0e..6ed1b152 100644 --- a/testbed/src/Gui.h +++ b/testbed/src/Gui.h @@ -27,21 +27,47 @@ #define GUI_H // Libraries - +#include +#include +#include // Class Gui class Gui { - private : + protected : // -------------------- Constants -------------------- // // -------------------- Attributes -------------------- // + // TODO : Delete this + static GLFWwindow* mWindow; + + static double g_Time; + static bool g_MousePressed[3]; + static float g_MouseWheel; + static GLuint g_FontTexture; + static int g_ShaderHandle, g_VertHandle, g_FragHandle; + static int g_AttribLocationTex, g_AttribLocationProjMtx; + static int g_AttribLocationPosition, g_AttribLocationUV, g_AttribLocationColor; + static size_t g_VboSize; + static unsigned int g_VboHandle, g_VaoHandle; + // -------------------- Methods -------------------- // + void createDeviceObjects(); + + void createFontTextures(); + + void beginNewFrame(); + + static void renderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count); + + static const char* getClipboardText(); + + static void setClipboardText(const char* text); public : @@ -53,11 +79,20 @@ class Gui { /// Destructor ~Gui(); + /// Create and return the singleton instance of this class + static Gui& getInstance(); + + /// Initialize the GUI + void init(); + /// Display the GUI - void display(); - - // -------------------- Methods -------------------- // + void render(); + static void setWindow(GLFWwindow* window); }; +inline void Gui::setWindow(GLFWwindow* window) { + mWindow = window; +} + #endif diff --git a/testbed/src/TestbedApplication.cpp b/testbed/src/TestbedApplication.cpp index 914a28a8..fc0721c4 100644 --- a/testbed/src/TestbedApplication.cpp +++ b/testbed/src/TestbedApplication.cpp @@ -103,6 +103,7 @@ void TestbedApplication::init() { glfwSwapInterval(0); // Initialize the GLEW library + glewExperimental = GL_TRUE; GLenum errorGLEW = glewInit(); if (errorGLEW != GLEW_OK) { @@ -127,6 +128,11 @@ void TestbedApplication::init() { // Create all the scenes createScenes(); + Gui::getInstance().setWindow(mWindow); + + // Init the GUI + Gui::getInstance().init(); + mTimer.start(); } @@ -214,7 +220,7 @@ void TestbedApplication::render() { mCurrentScene->render(); // Display the GUI - mGUI.display(); + Gui::getInstance().render(); // Check the OpenGL errors checkOpenGLErrors(); diff --git a/testbed/src/TestbedApplication.h b/testbed/src/TestbedApplication.h index f928f21e..f3b04a51 100644 --- a/testbed/src/TestbedApplication.h +++ b/testbed/src/TestbedApplication.h @@ -51,9 +51,6 @@ class TestbedApplication { /// GLFW window GLFWwindow* mWindow; - /// Graphical User Interface - Gui mGUI; - /// Timer Timer mTimer;