84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
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/*
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src/combobox.cpp -- simple combo box widget based on a popup button
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NanoGUI was developed by Wenzel Jakob <wenzel@inf.ethz.ch>.
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The widget drawing code is based on the NanoVG demo application
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by Mikko Mononen.
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All rights reserved. Use of this source code is governed by a
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BSD-style license that can be found in the LICENSE.txt file.
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*/
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#include <nanogui/combobox.h>
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#include <nanogui/layout.h>
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#include <nanogui/serializer/core.h>
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#include <cassert>
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NAMESPACE_BEGIN(nanogui)
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ComboBox::ComboBox(Widget *parent) : PopupButton(parent), mSelectedIndex(0) {
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}
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ComboBox::ComboBox(Widget *parent, const std::vector<std::string> &items)
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: PopupButton(parent), mSelectedIndex(0) {
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setItems(items);
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}
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ComboBox::ComboBox(Widget *parent, const std::vector<std::string> &items, const std::vector<std::string> &itemsShort)
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: PopupButton(parent), mSelectedIndex(0) {
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setItems(items, itemsShort);
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}
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void ComboBox::setSelectedIndex(int idx) {
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if (mItemsShort.empty())
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return;
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const std::vector<Widget *> &children = popup()->children();
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((Button *) children[mSelectedIndex])->setPushed(false);
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((Button *) children[idx])->setPushed(true);
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mSelectedIndex = idx;
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setCaption(mItemsShort[idx]);
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}
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void ComboBox::setItems(const std::vector<std::string> &items, const std::vector<std::string> &itemsShort) {
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assert(items.size() == itemsShort.size());
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mItems = items;
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mItemsShort = itemsShort;
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if (mSelectedIndex < 0 || mSelectedIndex >= (int) items.size())
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mSelectedIndex = 0;
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while (mPopup->childCount() != 0)
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mPopup->removeChild(mPopup->childCount()-1);
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mPopup->setLayout(new GroupLayout(10));
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int index = 0;
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for (const auto &str: items) {
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Button *button = new Button(mPopup, str);
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button->setFlags(Button::RadioButton);
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button->setCallback([&, index] {
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mSelectedIndex = index;
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setCaption(mItemsShort[index]);
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setPushed(false);
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popup()->setVisible(false);
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if (mCallback)
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mCallback(index);
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});
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index++;
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}
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setSelectedIndex(mSelectedIndex);
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}
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void ComboBox::save(Serializer &s) const {
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Widget::save(s);
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s.set("items", mItems);
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s.set("itemsShort", mItemsShort);
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s.set("selectedIndex", mSelectedIndex);
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}
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bool ComboBox::load(Serializer &s) {
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if (!Widget::load(s)) return false;
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if (!s.get("items", mItems)) return false;
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if (!s.get("itemsShort", mItemsShort)) return false;
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if (!s.get("selectedIndex", mSelectedIndex)) return false;
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return true;
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}
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NAMESPACE_END(nanogui)
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