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/****************************************************************************
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
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** GNU Lesser General Public License Usage
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** GNU General Public License Usage
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****************************************************************************/
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#include "qplatformbackingstore.h"
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#include <private/qwindow_p.h>
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class QPlatformBackingStorePrivate
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QPlatformBackingStorePrivate(QWindow *w)
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\class QPlatformBackingStore
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\brief The QPlatformBackingStore class provides the drawing area for top-level
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\fn void QPlatformBackingStore::flush(QWindow *window, const QRegion ®ion,
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Flushes the given \a region from the specified \a window onto the
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Note that the \a offset parameter is currently unused.
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\fn QPaintDevice* QPlatformBackingStore::paintDevice()
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Implement this function to return the appropriate paint device.
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Constructs an empty surface for the given top-level \a window.
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QPlatformBackingStore::QPlatformBackingStore(QWindow *window)
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: d_ptr(new QPlatformBackingStorePrivate(window))
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Destroys this surface.
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QPlatformBackingStore::~QPlatformBackingStore()
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Returns a pointer to the top-level window associated with this
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QWindow* QPlatformBackingStore::window() const
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return d_ptr->window;
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This function is called before painting onto the surface begins,
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with the \a region in which the painting will occur.
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\sa endPaint(), paintDevice()
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void QPlatformBackingStore::beginPaint(const QRegion &)
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This function is called after painting onto the surface has ended.
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\sa beginPaint(), paintDevice()
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void QPlatformBackingStore::endPaint()
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Scrolls the given \a area \a dx pixels to the right and \a dy
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downward; both \a dx and \a dy may be negative.
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Returns true if the area was scrolled successfully; false otherwise.
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bool QPlatformBackingStore::scroll(const QRegion &area, int dx, int dy)