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    41 

    42 #ifndef QWINDOWSURFACE_P_H

    43 #define QWINDOWSURFACE_P_H

    44 

    45 //

    46 //  W A R N I N G

    47 //  -------------

    48 //

    49 // This file is not part of the Qt API.  It exists for the convenience

    50 // of other Qt classes.  This header file may change from version to

    51 // version without notice, or even be removed.

    52 //

    53 // We mean it.

    54 //

    55 

    56 #include <QtGui/qwidget.h>

    57 

    58 QT_BEGIN_NAMESPACE

    59 

    60 class QPaintDevice;

    61 class QRegion;

    62 class QRect;

    63 class QPoint;

    64 class QImage;

    65 class QWindowSurfacePrivate;

    66 

    67 class Q_GUI_EXPORT QWindowSurface

    68 {

    69 public:

    70     QWindowSurface(QWidget *window);

    71     virtual ~QWindowSurface();

    72 

    73     QWidget *window() const;

    74 

    75     virtual QPaintDevice *paintDevice() = 0;

    76     virtual void flush(QWidget *widget, const QRegion &region,

    77                        const QPoint &offset) = 0;

    78     virtual void setGeometry(const QRect &rect);

    79     QRect geometry() const;

    80 

    81     virtual bool scroll(const QRegion &area, int dx, int dy);

    82 

    83     virtual void beginPaint(const QRegion &);

    84     virtual void endPaint(const QRegion &);

    85 

    86     virtual QImage* buffer(const QWidget *widget);

    87     virtual QPixmap grabWidget(const QWidget *widget, const QRect& rectangle = QRect()) const;

    88 

    89     virtual QPoint offset(const QWidget *widget) const;

    90     inline QRect rect(const QWidget *widget) const;

    91 

    92     bool hasStaticContentsSupport() const;

    93 

    94     void setStaticContents(const QRegion &region);

    95     QRegion staticContents() const;

    96 

    97 protected:

    98     bool hasStaticContents() const;

    99     void setStaticContentsSupport(bool enable);

   100 

   101 private:

   102     QWindowSurfacePrivate *d_ptr;

   103 };

   104 

   105 inline QRect QWindowSurface::rect(const QWidget *widget) const

   106 {

   107     return widget->rect().translated(offset(widget));

   108 }

   109 

   110 QT_END_NAMESPACE

   111 

   112 #endif // QWINDOWSURFACE_P_H