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/***************************************************************************
**
** Copyright (C) 2013 BlackBerry Limited. All rights reserved.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the plugins 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 The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/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.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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 ®ion, int dx, int dy, bool flush=false);
QQnxBuffer &renderBuffer();
bool hasBuffers() const { return !bufferSize().isEmpty(); }
void setParent(const QPlatformWindow *window);
void adjustBufferSize();
protected:
int pixelFormat() const;
void resetBuffers();
// Copies content from the previous buffer (back buffer) to the current buffer (front buffer)
void blitPreviousToCurrent(const QRegion ®ion, int dx, int dy, bool flush=false);
void blitHelper(QQnxBuffer &source, QQnxBuffer &target, const QPoint &sourceOffset,
const QPoint &targetOffset, const QRegion ®ion, 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
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