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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtOpenGL module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QGLPAINTDEVICE_P_H
#define QGLPAINTDEVICE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of the QtOpenGL module. This header file may change from
// version to version without notice, or even be removed.
//
// We mean it.
//
#include <qpaintdevice.h>
#include <qgl.h>
QT_BEGIN_NAMESPACE
class Q_OPENGL_EXPORT QGLPaintDevice : public QPaintDevice
{
public:
QGLPaintDevice();
virtual ~QGLPaintDevice();
int devType() const {return QInternal::OpenGL;}
virtual void beginPaint();
virtual void ensureActiveTarget();
virtual void endPaint();
virtual QGLContext* context() const = 0;
virtual QGLFormat format() const;
virtual QSize size() const = 0;
virtual bool alphaRequested() const;
virtual bool isFlipped() const;
// returns the QGLPaintDevice for the given QPaintDevice
static QGLPaintDevice* getDevice(QPaintDevice*);
protected:
int metric(QPaintDevice::PaintDeviceMetric metric) const;
GLuint m_previousFBO;
GLuint m_thisFBO;
};
// Wraps a QGLWidget
class QGLWidget;
class QGLWidgetGLPaintDevice : public QGLPaintDevice
{
public:
QGLWidgetGLPaintDevice();
virtual QPaintEngine* paintEngine() const;
// QGLWidgets need to do swapBufers in endPaint:
virtual void beginPaint();
virtual void endPaint();
virtual QSize size() const;
virtual QGLContext* context() const;
void setWidget(QGLWidget*);
private:
friend class QGLWidget;
QGLWidget *glWidget;
};
QT_END_NAMESPACE
#endif // QGLPAINTDEVICE_P_H
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