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****************************************************************************/

#ifndef QPIXMAPDATA_VG_P_H

#define QPIXMAPDATA_VG_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists for the convenience

// of other Qt classes.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <QtGui/private/qpixmap_raster_p.h>

#include <private/qvg_p.h>

#if defined(Q_OS_SYMBIAN)

class RSGImage;

#endif

QT_BEGIN_NAMESPACE

class QEglContext;

class QVGImagePool;

#if !defined(QT_NO_EGL)

class QVGPixmapData;

class QVGSharedContext;

void qt_vg_register_pixmap(QVGPixmapData *pd);

void qt_vg_unregister_pixmap(QVGPixmapData *pd);

void qt_vg_hibernate_pixmaps(QVGSharedContext *context);

#endif

class Q_OPENVG_EXPORT QVGPixmapData : public QPixmapData

{

public:

    QVGPixmapData(PixelType type);

    ~QVGPixmapData();

    QPixmapData *createCompatiblePixmapData() const;

    // Is this pixmap valid (i.e. non-zero in size)?

    bool isValid() const;

    void resize(int width, int height);

    void fromImage(const QImage &image, Qt::ImageConversionFlags flags);

    void fill(const QColor &color);

    bool hasAlphaChannel() const;

    void setAlphaChannel(const QPixmap &alphaChannel);

    QImage toImage() const;

    QImage *buffer();

    QPaintEngine* paintEngine() const;

    // Return the VGImage form of this pixmap, creating it if necessary.

    // This assumes that there is a VG context current.

    virtual VGImage toVGImage();

    // Return the VGImage form for a specific opacity setting.

    virtual VGImage toVGImage(qreal opacity);

    // Detach this image from the image pool.

    virtual void detachImageFromPool();

    // Release the VG resources associated with this pixmap and copy

    // the pixmap's contents out of the GPU back into main memory.

    // The VG resource will be automatically recreated the next time

    // toVGImage() is called.  Does nothing if the pixmap cannot be

    // hibernated for some reason (e.g. VGImage is shared with another

    // process via a SgImage).

    virtual void hibernate();

    // Called when the QVGImagePool wants to reclaim this pixmap's

    // VGImage objects to reuse storage.

    virtual void reclaimImages();

    QSize size() const { return QSize(w, h); }

#if defined(Q_OS_SYMBIAN)

    void* toNativeType(NativeType type);

    void fromNativeType(void* pixmap, NativeType type);

#endif

protected:

    int metric(QPaintDevice::PaintDeviceMetric metric) const;

#if defined(Q_OS_SYMBIAN)

    void cleanup();

#endif

private:

    QVGPixmapData *nextLRU;

    QVGPixmapData *prevLRU;

    bool inLRU;

    friend class QVGImagePool;

#if !defined(QT_NO_EGL)

    QVGPixmapData *next;

    QVGPixmapData *prev;

    friend void qt_vg_register_pixmap(QVGPixmapData *pd);

    friend void qt_vg_unregister_pixmap(QVGPixmapData *pd);

    friend void qt_vg_hibernate_pixmaps(QVGSharedContext *context);

#endif

protected:

    QSize prevSize;

    VGImage vgImage;

    VGImage vgImageOpacity;

    qreal cachedOpacity;

    mutable QImage source;

    mutable bool recreate;

    bool inImagePool;

#if !defined(QT_NO_EGL)

    mutable QEglContext *context;

#endif

    void forceToImage();

    QImage::Format sourceFormat() const;

    void destroyImageAndContext();

    void destroyImages();

};

QT_END_NAMESPACE

#endif