1 /****************************************************************************
3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/
6 ** This file is part of the QtGui module of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** GNU Lesser General Public License Usage
10 ** This file may be used under the terms of the GNU Lesser General Public
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12 ** appearing in the file LICENSE.LGPL included in the packaging of this
13 ** file. Please review the following information to ensure the GNU Lesser
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19 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
21 ** GNU General Public License Usage
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40 ****************************************************************************/
42 #ifndef QBACKINGSTORE_H
43 #define QBACKINGSTORE_H
45 #include <QtCore/qrect.h>
47 #include <QtGui/qwindow.h>
48 #include <QtGui/qregion.h>
59 class QBackingStorePrivate;
60 class QPlatformBackingStore;
62 class Q_GUI_EXPORT QBackingStore
65 explicit QBackingStore(QWindow *window);
68 QWindow *window() const;
70 QPaintDevice *paintDevice();
72 // 'window' can be a child window, in which case 'region' is in child window coordinates and
73 // offset is the (child) window's offset in relation to the window surface.
74 void flush(const QRegion ®ion, QWindow *window = 0, const QPoint &offset = QPoint());
76 void resize(const QSize &size);
79 bool scroll(const QRegion &area, int dx, int dy);
81 void beginPaint(const QRegion &);
84 void setStaticContents(const QRegion ®ion);
85 QRegion staticContents() const;
86 bool hasStaticContents() const;
88 QPlatformBackingStore *handle() const;
91 QScopedPointer<QBackingStorePrivate> d_ptr;
98 #endif // QBACKINGSTORE_H