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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtOpenGL module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QWINDOWSURFACE_GL_P_H
#define QWINDOWSURFACE_GL_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists for the convenience
// of the QLibrary class.  This header file may change from
// version to version without notice, or even be removed.
//
// We mean it.
//

#include <qglobal.h>
#include <qgl.h>
#include <private/qwindowsurface_p.h>

QT_BEGIN_NAMESPACE

class QPaintDevice;
class QPoint;
class QRegion;
class QWidget;
struct QGLWindowSurfacePrivate;

class QGLWindowSurface : public QWindowSurface, public QPaintDevice
{
public:
    QGLWindowSurface(QWidget *window);
    ~QGLWindowSurface();

    QPaintDevice *paintDevice();
    void flush(QWidget *widget, const QRegion &region, const QPoint &offset);
    void setGeometry(const QRect &rect);
    bool scroll(const QRegion &area, int dx, int dy);

    void beginPaint(const QRegion &region);
    void endPaint(const QRegion &region);

    QImage *buffer(const QWidget *widget);

    QGLContext *context() const;

    static QGLFormat surfaceFormat;

    QPaintEngine *paintEngine() const;

protected:
    int metric(PaintDeviceMetric metric) const;

private:
    void hijackWindow(QWidget *widget);

    QGLWindowSurfacePrivate *d_ptr;
};

QT_END_NAMESPACE

#endif // QWINDOWSURFACE_GL_P_H