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42 #include "qplatformbackingstore.h"
45 #include <private/qwindow_p.h>
49 class QPlatformBackingStorePrivate
52 QPlatformBackingStorePrivate(QWindow *w)
62 \class QPlatformBackingStore
68 \brief The QPlatformBackingStore class provides the drawing area for top-level
73 \fn void QPlatformBackingStore::flush(QWindow *window, const QRegion ®ion,
76 Flushes the given \a region from the specified \a window onto the
79 Note that the \a offset parameter is currently unused.
83 \fn QPaintDevice* QPlatformBackingStore::paintDevice()
85 Implement this function to return the appropriate paint device.
89 Constructs an empty surface for the given top-level \a window.
91 QPlatformBackingStore::QPlatformBackingStore(QWindow *window)
92 : d_ptr(new QPlatformBackingStorePrivate(window))
97 Destroys this surface.
99 QPlatformBackingStore::~QPlatformBackingStore()
105 Returns a pointer to the top-level window associated with this
108 QWindow* QPlatformBackingStore::window() const
110 return d_ptr->window;
114 This function is called before painting onto the surface begins,
115 with the \a region in which the painting will occur.
117 \sa endPaint(), paintDevice()
120 void QPlatformBackingStore::beginPaint(const QRegion &)
125 This function is called after painting onto the surface has ended.
127 \sa beginPaint(), paintDevice()
130 void QPlatformBackingStore::endPaint()
135 Scrolls the given \a area \a dx pixels to the right and \a dy
136 downward; both \a dx and \a dy may be negative.
138 Returns true if the area was scrolled successfully; false otherwise.
140 bool QPlatformBackingStore::scroll(const QRegion &area, int dx, int dy)