source: trunk/src/gui/painting/qwindowsurface_raster_p.h@ 1166

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#ifndef QWINDOWSURFACE_RASTER_P_H
#define QWINDOWSURFACE_RASTER_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 QLibrary class.  This header file may change from
// version to version without notice, or even be removed.
//
// We mean it.
//

#include <qglobal.h>
#include "private/qwindowsurface_p.h"

QT_BEGIN_NAMESPACE

#ifdef Q_WS_WIN
#define Q_WS_EX_LAYERED           0x00080000 // copied from WS_EX_LAYERED in winuser.h
#define Q_LWA_ALPHA               0x00000002 // copied from LWA_ALPHA in winuser.h
#define Q_ULW_ALPHA               0x00000002 // copied from ULW_ALPHA in winuser.h
#define Q_AC_SRC_ALPHA            0x00000001 // copied from AC_SRC_ALPHA in winuser.h

struct Q_UPDATELAYEREDWINDOWINFO {
    DWORD cbSize;
    HDC hdcDst;
    const POINT *pptDst;
    const SIZE *psize;
    HDC hdcSrc;
    const POINT *pptSrc;
    COLORREF crKey;
    const BLENDFUNCTION *pblend;
    DWORD dwFlags;
    const RECT *prcDirty;
};

typedef BOOL (WINAPI *PtrUpdateLayeredWindow)(HWND hwnd, HDC hdcDst, const POINT *pptDst,
             const SIZE *psize, HDC hdcSrc, const POINT *pptSrc, COLORREF crKey,
             const BLENDFUNCTION *pblend, DWORD dwflags);
typedef BOOL (WINAPI *PtrUpdateLayeredWindowIndirect)(HWND hwnd, const Q_UPDATELAYEREDWINDOWINFO *pULWInfo);
extern PtrUpdateLayeredWindow ptrUpdateLayeredWindow;
extern PtrUpdateLayeredWindowIndirect ptrUpdateLayeredWindowIndirect;
#endif

class QPaintDevice;
class QPoint;
class QRegion;
class QRegion;
class QSize;
class QWidget;
class QRasterWindowSurfacePrivate;
class QNativeImage;

class Q_GUI_EXPORT QRasterWindowSurface : public QWindowSurface
{
public:
    QRasterWindowSurface(QWidget *widget);
    ~QRasterWindowSurface();

    QPaintDevice *paintDevice();
    void flush(QWidget *widget, const QRegion &region, const QPoint &offset);
    void beginPaint(const QRegion &rgn);
    void setGeometry(const QRect &rect);
    bool scroll(const QRegion &area, int dx, int dy);

private:
    void prepareBuffer(QImage::Format format, QWidget *widget);
    Q_DECLARE_PRIVATE(QRasterWindowSurface)
    QScopedPointer<QRasterWindowSurfacePrivate> d_ptr;
};

QT_END_NAMESPACE

#endif // QWINDOWSURFACE_RASTER_P_H