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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Wayland module
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef COMPOSITORWINDOW_H
#define COMPOSITORWINDOW_H
#include <QOpenGLWindow>
#include <QPointer>
#include <QtGui/private/qopengltextureblitter_p.h>
QT_BEGIN_NAMESPACE
class WindowCompositor;
class WindowCompositorView;
class QOpenGLTexture;
class CompositorWindow : public QOpenGLWindow
{
public:
CompositorWindow();
void setCompositor(WindowCompositor *comp);
protected:
void initializeGL() Q_DECL_OVERRIDE;
void paintGL() Q_DECL_OVERRIDE;
void mousePressEvent(QMouseEvent *e) Q_DECL_OVERRIDE;
void mouseReleaseEvent(QMouseEvent *e) Q_DECL_OVERRIDE;
void mouseMoveEvent(QMouseEvent *e) Q_DECL_OVERRIDE;
void keyPressEvent(QKeyEvent *e) Q_DECL_OVERRIDE;
void keyReleaseEvent(QKeyEvent *e) Q_DECL_OVERRIDE;
private slots:
void startMove();
void startResize(int edge);
void startDrag(WindowCompositorView *dragIcon);
void setFrameOffset(const QPoint &offset);
private:
enum GrabState { NoGrab, MoveGrab, ResizeGrab, DragGrab };
WindowCompositorView *viewAt(const QPointF &point);
bool mouseGrab() const { return m_grabState != NoGrab ;}
void drawBackground();
void sendMouseEvent(QMouseEvent *e, WindowCompositorView *target);
QOpenGLTextureBlitter m_textureBlitter;
QSize m_backgroundImageSize;
QOpenGLTexture *m_backgroundTexture;
WindowCompositor *m_compositor;
QPointer<WindowCompositorView> m_mouseView;
GrabState m_grabState;
QSize m_initialSize;
int m_resizeEdge;
QPointF m_mouseOffset;
QPointF m_initialMousePos;
WindowCompositorView *m_dragIconView;
};
QT_END_NAMESPACE
#endif // COMPOSITORWINDOW_H
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