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

#ifndef QSGENGINE_H
#define QSGENGINE_H

#include <QObject>

#include <qsgtexture.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Declarative)

class QSGEnginePrivate;

class QSGContext;
class Q_DECLARATIVE_EXPORT QSGEngine : public QObject
{
    Q_OBJECT

    Q_DECLARE_PRIVATE(QSGEngine)

public:

    enum TextureOption {
        TextureHasAlphaChannel  = 0x0001,
        TextureHasMipmaps       = 0x0002,
        TextureOwnsGLTexture    = 0x0004
    };
    Q_DECLARE_FLAGS(TextureOptions, TextureOption)

    QSGTexture *createTextureFromImage(const QImage &image) const;
    QSGTexture *createTextureFromId(uint id, const QSize &size, TextureOptions options = TextureOption(0)) const;

    void setClearBeforeRendering(bool enabled);
    bool clearBeforeRendering() const;

    void setClearColor(const QColor &color);
    QColor clearColor() const;

signals:
    void beforeRendering();
    void afterRendering();

private:
    QSGEngine(QObject *parent = 0);
    ~QSGEngine();

    friend class QSGContext;
    friend class QSGContextPrivate;
    void setContext(QSGContext *context);

};

QT_END_NAMESPACE

QT_END_HEADER

#endif // QSGENGINE_H