qqnxrasterwindow.h

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// Copyright (C) 2013 BlackBerry Limited. All rights reserved.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QQNXRASTERWINDOW_H
#define QQNXRASTERWINDOW_H
 
#include "qqnxwindow.h"
#include "qqnxbuffer.h"
 
QT_BEGIN_NAMESPACE
 
class QQnxRasterWindow : public QQnxWindow
{
public:
    QQnxRasterWindow(QWindow *window, screen_context_t context, bool needRootWindow);
 
    void post(const QRegion &dirty);
 
    void scroll(const QRegion &region, int dx, int dy, bool flush=false);
 
    QQnxBuffer &renderBuffer();
 
    bool hasBuffers() const { return !bufferSize().isEmpty(); }
 
    void setParent(const QPlatformWindow *window) override;
 
    void adjustBufferSize();
 
protected:
    int pixelFormat() const override;
    void resetBuffers() override;
 
    // Copies content from the previous buffer (back buffer) to the current buffer (front buffer)
    void blitPreviousToCurrent(const QRegion &region, int dx, int dy, bool flush=false);
 
    void blitHelper(QQnxBuffer &source, QQnxBuffer &target, const QPoint &sourceOffset,
                    const QPoint &targetOffset, const QRegion &region, bool flush = false);
 
private:
    QRegion m_previousDirty;
    QRegion m_scrolled;
    int m_currentBufferIndex;
    int m_previousBufferIndex;
    QQnxBuffer m_buffers[MAX_BUFFER_COUNT];
};
 
QT_END_NAMESPACE
 
#endif // QQNXRASTERWINDOW_H