51 lines
1.7 KiB
C++
51 lines
1.7 KiB
C++
/*
|
|
nanogui/vscrollpanel.h -- Adds a vertical scrollbar around a widget
|
|
that is too big to fit into a certain area
|
|
|
|
NanoGUI was developed by Wenzel Jakob <wenzel.jakob@epfl.ch>.
|
|
The widget drawing code is based on the NanoVG demo application
|
|
by Mikko Mononen.
|
|
|
|
All rights reserved. Use of this source code is governed by a
|
|
BSD-style license that can be found in the LICENSE.txt file.
|
|
*/
|
|
/** \file */
|
|
|
|
#pragma once
|
|
|
|
#include <nanogui/widget.h>
|
|
|
|
NAMESPACE_BEGIN(nanogui)
|
|
|
|
/**
|
|
* \class VScrollPanel vscrollpanel.h nanogui/vscrollpanel.h
|
|
*
|
|
* \brief Adds a vertical scrollbar around a widget that is too big to fit into
|
|
* a certain area.
|
|
*/
|
|
class NANOGUI_EXPORT VScrollPanel : public Widget {
|
|
public:
|
|
VScrollPanel(Widget *parent);
|
|
|
|
/// Return the current scroll amount as a value between 0 and 1. 0 means scrolled to the top and 1 to the bottom.
|
|
float scroll() const { return mScroll; }
|
|
/// Set the scroll amount to a value between 0 and 1. 0 means scrolled to the top and 1 to the bottom.
|
|
void setScroll(float scroll) { mScroll = scroll; }
|
|
|
|
virtual void performLayout(NVGcontext *ctx) override;
|
|
virtual Vector2i preferredSize(NVGcontext *ctx) const override;
|
|
virtual bool mouseDragEvent(const Vector2i &p, const Vector2i &rel, int button, int modifiers) override;
|
|
virtual bool scrollEvent(const Vector2i &p, const Vector2f &rel) override;
|
|
virtual void draw(NVGcontext *ctx) override;
|
|
virtual void save(Serializer &s) const override;
|
|
virtual bool load(Serializer &s) override;
|
|
protected:
|
|
int mChildPreferredHeight;
|
|
float mScroll;
|
|
bool mUpdateLayout;
|
|
public:
|
|
EIGEN_MAKE_ALIGNED_OPERATOR_NEW
|
|
};
|
|
|
|
NAMESPACE_END(nanogui)
|