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#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;

    // returns the QGLPaintDevice for the given QPaintDevice

    static QGLPaintDevice* getDevice(QPaintDevice*);

protected:

    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