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39
40#ifndef QBACKINGSTORE_H
41#define QBACKINGSTORE_H
42
43#include <QtGui/qtguiglobal.h>
44#include <QtCore/qrect.h>
45
46#include <QtGui/qwindow.h>
47#include <QtGui/qregion.h>
48
49QT_BEGIN_NAMESPACE
50
51
52class QRegion;
53class QRect;
54class QPoint;
55class QImage;
56class QBackingStorePrivate;
57class QPlatformBackingStore;
58
59class Q_GUI_EXPORT QBackingStore
60{
61public:
62 explicit QBackingStore(QWindow *window);
63 ~QBackingStore();
64
65 QWindow *window() const;
66
67 QPaintDevice *paintDevice();
68
69 void flush(const QRegion &region, QWindow *window = nullptr, const QPoint &offset = QPoint());
70
71 void resize(const QSize &size);
72 QSize size() const;
73
74 bool scroll(const QRegion &area, int dx, int dy);
75
76 void beginPaint(const QRegion &);
77 void endPaint();
78
79 void setStaticContents(const QRegion &region);
80 QRegion staticContents() const;
81 bool hasStaticContents() const;
82
83 QPlatformBackingStore *handle() const;
84
85private:
86 QScopedPointer<QBackingStorePrivate> d_ptr;
87};
88
89QT_END_NAMESPACE
90
91#endif // QBACKINGSTORE_H
92

source code of qtbase/src/gui/painting/qbackingstore.h