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8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** GNU Lesser General Public License Usage
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40 ****************************************************************************/
42 #ifndef QPLATFORMBACKINGSTORE_H
43 #define QPLATFORMBACKINGSTORE_H
49 // This file is part of the QPA API and is not meant to be used
50 // in applications. Usage of this API may make your code
51 // source and binary incompatible with future versions of Qt.
54 #include <QtCore/qrect.h>
56 #include <QtGui/qwindow.h>
57 #include <QtGui/qregion.h>
68 class QPlatformBackingStorePrivate;
69 class QPlatformWindow;
71 class Q_GUI_EXPORT QPlatformBackingStore
74 explicit QPlatformBackingStore(QWindow *window);
75 virtual ~QPlatformBackingStore();
77 QWindow *window() const;
79 virtual QPaintDevice *paintDevice() = 0;
81 // 'window' can be a child window, in which case 'region' is in child window coordinates and
82 // offset is the (child) window's offset in relation to the window surface.
83 virtual void flush(QWindow *window, const QRegion ®ion, const QPoint &offset) = 0;
85 virtual void resize(const QSize &size, const QRegion &staticContents) = 0;
87 virtual bool scroll(const QRegion &area, int dx, int dy);
89 virtual void beginPaint(const QRegion &);
90 virtual void endPaint();
93 QPlatformBackingStorePrivate *d_ptr;
100 #endif // QPLATFORMBACKINGSTORE_H