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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QBACKINGSTORE_H
#define QBACKINGSTORE_H
#include <QtCore/qrect.h>
#include <QtGui/qwindow.h>
#include <QtGui/qregion.h>
QT_BEGIN_NAMESPACE
class QRegion;
class QRect;
class QPoint;
class QImage;
class QBackingStorePrivate;
class QPlatformBackingStore;
class Q_GUI_EXPORT QBackingStore
{
public:
explicit QBackingStore(QWindow *window);
~QBackingStore();
QWindow *window() const;
QPaintDevice *paintDevice();
// 'window' can be a child window, in which case 'region' is in child window coordinates and
// offset is the (child) window's offset in relation to the window surface.
void flush(const QRegion ®ion, QWindow *window = 0, const QPoint &offset = QPoint());
void resize(const QSize &size);
QSize size() const;
bool scroll(const QRegion &area, int dx, int dy);
void beginPaint(const QRegion &);
void endPaint();
void setStaticContents(const QRegion ®ion);
QRegion staticContents() const;
bool hasStaticContents() const;
QPlatformBackingStore *handle() const;
private:
QScopedPointer<QBackingStorePrivate> d_ptr;
};
QT_END_NAMESPACE
#endif // QBACKINGSTORE_H
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