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#ifndef QBBGLBACKINGSTORE_H
#define QBBGLBACKINGSTORE_H

#include <QtGui/qplatformbackingstore_qpa.h>
#include <QtOpenGL/private/qglpaintdevice_p.h>

#include <screen/screen.h>

QT_BEGIN_NAMESPACE

class QGLContext;
class QBBGLContext;
class QBBScreen;
class QBBWindow;

class QBBGLPaintDevice : public QGLPaintDevice
{
public:
    QBBGLPaintDevice(QWindow *window);
    virtual ~QBBGLPaintDevice();

    virtual QPaintEngine *paintEngine() const;
    virtual QSize size() const;
    virtual QGLContext *context() const { return m_glContext; }

private:
    QBBWindow *m_window;
    QGLContext *m_glContext;
};

class QBBGLBackingStore : public QPlatformBackingStore
{
public:
    QBBGLBackingStore(QWindow *window);
    virtual ~QBBGLBackingStore();

    virtual QPaintDevice *paintDevice() { return m_paintDevice; }
    virtual void flush(QWindow *window, const QRegion &region, const QPoint &offset);
    virtual void resize(const QSize &size, const QRegion &staticContents);
    virtual void beginPaint(const QRegion &region);
    virtual void endPaint(const QRegion &region);

    void resizeSurface(const QSize &size);

private:
    QOpenGLContext *m_openGLContext;
    QBBGLPaintDevice *m_paintDevice;
    QSize m_requestedSize;
    QSize m_size;
};

QT_END_NAMESPACE

#endif // QBBGLBACKINGSTORE_H