qbackingstore.h

Go to the documentation of this file.

// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QBACKINGSTORE_H
#define QBACKINGSTORE_H
 
#include <QtGui/qtguiglobal.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();
 
    void flush(const QRegion &region, QWindow *window = nullptr, 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 &region);
    QRegion staticContents() const;
    bool hasStaticContents() const;
 
    QPlatformBackingStore *handle() const;
 
private:
    QScopedPointer<QBackingStorePrivate> d_ptr;
};
 
QT_END_NAMESPACE
 
#endif // QBACKINGSTORE_H