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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 plugins 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 QDIRECTFBPAINTDEVICE_H
#define QDIRECTFBPAINTDEVICE_H

#include <private/qpaintengine_raster_p.h>
#include <directfb.h>
#include "qdirectfbscreen.h"

QT_BEGIN_HEADER

QT_MODULE(Gui)

// Inherited by both window surface and pixmap
class QDirectFBPaintDevice : public QCustomRasterPaintDevice
{
public:
    ~QDirectFBPaintDevice();

    IDirectFBSurface *directFBSurface() const;

    void lockDirectFB(uint flags);
    void unlockDirectFB();

    // Reimplemented from QCustomRasterPaintDevice:
    void* memory() const;
    QImage::Format format() const;
    int bytesPerLine() const;
    QSize size() const;
    int metric(QPaintDevice::PaintDeviceMetric metric) const;
    uint lockFlags() const { return lock; }
protected:
    // Shouldn't create QDirectFBPaintDevice by itself but only sub-class it:
    QDirectFBPaintDevice(QDirectFBScreen *scr = QDirectFBScreen::instance())
        : QCustomRasterPaintDevice(0),
          dfbSurface(0),
          lockedImage(0),
          screen(scr),
          lock(0),
          mem(0)
    {}

    inline int dotsPerMeterX() const
    {
        return (screen->deviceWidth() * 1000) / screen->physicalWidth();
    }
    inline int dotsPerMeterY() const
    {
        return (screen->deviceHeight() * 1000) / screen->physicalHeight();
    }

    IDirectFBSurface *dfbSurface;
    QImage *lockedImage;
    QDirectFBScreen *screen;
    int bpl;
    uint lock;
    uchar *mem;
private:
    Q_DISABLE_COPY(QDirectFBPaintDevice)
};

QT_END_HEADER

#endif //QDIRECTFBPAINTDEVICE_H