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#ifndef QDIRECTFBSCREEN_H
#define QDIRECTFBSCREEN_H

#include <QtGui/qscreen_qws.h>
#include <directfb.h>

QT_BEGIN_HEADER

QT_MODULE(Gui)

#define Q_DIRECTFB_VERSION ((DIRECTFB_MAJOR_VERSION << 16) | (DIRECTFB_MINOR_VERION << 8) | DIRECTFB_MICRO_VERSION)

class QDirectFBScreenPrivate;

class Q_GUI_EXPORT QDirectFBScreen : public QScreen
{
public:
    QDirectFBScreen(int display_id);
    ~QDirectFBScreen();

    bool connect(const QString &displaySpec);
    void disconnect();
    bool initDevice();
    void shutdownDevice();

    void exposeRegion(QRegion r, int changing);
    void blit(const QImage &img, const QPoint &topLeft, const QRegion &region);
    void scroll(const QRegion &region, const QPoint &offset);
    void solidFill(const QColor &color, const QRegion &region);

    void setMode(int width, int height, int depth);
    void blank(bool on);

    QWSWindowSurface* createSurface(QWidget *widget) const;
    QWSWindowSurface* createSurface(const QString &key) const;

    static inline QDirectFBScreen* instance() {
        QScreen *inst = QScreen::instance();
        Q_ASSERT(!inst || inst->classId() == QScreen::DirectFBClass);
        return static_cast<QDirectFBScreen*>(inst);
    }

    IDirectFB* dfb();
    IDirectFBSurface* dfbSurface();
#ifndef QT_NO_DIRECTFB_LAYER
    IDirectFBDisplayLayer* dfbDisplayLayer();
#endif

    // Track surface creation/release so we can release all on exit
    enum SurfaceCreationOption {
        DontTrackSurface = 0,
        TrackSurface = 1
    };
    Q_DECLARE_FLAGS(SurfaceCreationOptions, SurfaceCreationOption);
    IDirectFBSurface *createDFBSurface(const DFBSurfaceDescription *desc,
                                       SurfaceCreationOptions options);
    IDirectFBSurface *createDFBSurface(const QImage &image,
                                       SurfaceCreationOptions options);
    IDirectFBSurface *createDFBSurface(const QSize &size,
                                       QImage::Format format,
                                       SurfaceCreationOptions options);
    IDirectFBSurface *copyDFBSurface(IDirectFBSurface *src,
                                     QImage::Format format,
                                     SurfaceCreationOptions options);
    IDirectFBSurface *copyToDFBSurface(const QImage &image,
                                     QImage::Format format,
                                     SurfaceCreationOptions options);
    void releaseDFBSurface(IDirectFBSurface* surface);

    bool preferVideoOnly() const;

    static int depth(DFBSurfacePixelFormat format);

    static DFBSurfacePixelFormat getSurfacePixelFormat(QImage::Format format);
    static DFBSurfaceDescription getSurfaceDescription(const QImage &image);
    static DFBSurfaceDescription getSurfaceDescription(const uint *buffer,
                                                       int length);
    static QImage::Format getImageFormat(IDirectFBSurface *surface);
    static bool initSurfaceDescriptionPixelFormat(DFBSurfaceDescription *description, QImage::Format format);
    static inline bool isPremultiplied(QImage::Format format);
    QImage::Format alphaPixmapFormat() const;

#ifndef QT_NO_DIRECTFB_PALETTE
    static void setSurfaceColorTable(IDirectFBSurface *surface,
                                     const QImage &image);
#endif

private:
    void compose(const QRegion &r);
    void blit(IDirectFBSurface *src, const QPoint &topLeft,
              const QRegion &region);

    QDirectFBScreenPrivate *d_ptr;
};

Q_DECLARE_OPERATORS_FOR_FLAGS(QDirectFBScreen::SurfaceCreationOptions);

inline bool QDirectFBScreen::isPremultiplied(QImage::Format format)
{
    switch (format) {
    case QImage::Format_ARGB32_Premultiplied:
    case QImage::Format_ARGB8565_Premultiplied:
    case QImage::Format_ARGB6666_Premultiplied:
    case QImage::Format_ARGB8555_Premultiplied:
    case QImage::Format_ARGB4444_Premultiplied:
        return true;
    default:
        break;
    }
    return false;
}


QT_END_HEADER

#endif // QDIRECTFBSCREEN_H