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#ifndef QWINDOWSBACKINGSTORE_H
#define QWINDOWSBACKINGSTORE_H

#include "qtwindows_additional.h"

#include <qpa/qplatformbackingstore.h>
#include <QtCore/QScopedPointer>

QT_BEGIN_NAMESPACE

class QWindowsWindow;
class QWindowsNativeImage;

class QWindowsBackingStore : public QPlatformBackingStore
{
    Q_DISABLE_COPY(QWindowsBackingStore)
public:
    QWindowsBackingStore(QWindow *window);
    ~QWindowsBackingStore();

    QPaintDevice *paintDevice() Q_DECL_OVERRIDE;
    void flush(QWindow *window, const QRegion &region, const QPoint &offset) Q_DECL_OVERRIDE;
    void resize(const QSize &size, const QRegion &r) Q_DECL_OVERRIDE;
    bool scroll(const QRegion &area, int dx, int dy) Q_DECL_OVERRIDE;
    void beginPaint(const QRegion &) Q_DECL_OVERRIDE;

    HDC getDC() const;

#ifndef QT_NO_OPENGL
    QImage toImage() const Q_DECL_OVERRIDE;
#endif

private:
    QScopedPointer<QWindowsNativeImage> m_image;
};

QT_END_NAMESPACE

#endif // QWINDOWSBACKINGSTORE_H