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


#ifndef QXGRAPHICSVIEW_H
#define QXGRAPHICSVIEW_H

#include <QtOpenGL/qgl.h>

#include "qmlscene_global.h"

#include <QtDeclarative/qdeclarativeengine.h>
#include <QtDeclarative/qdeclarativecontext.h>

class QxItem;
class QxGraphicsViewPrivate;
class QSGContext;

class QT_SCENEGRAPH_EXPORT QxGraphicsView : public
#ifdef Q_WS_QPA
        QWidget
#else
        QGLWidget
#endif
{
Q_OBJECT
public:
    QxGraphicsView(QWidget * = 0);
    ~QxGraphicsView();

    QxItem *root();

    QDeclarativeEngine* engine() const;
    QDeclarativeContext* rootContext() const;

    void setSceneGraphContext(QSGContext *context);
    QSGContext *sceneGraphContext() const;

    QUrl source() const;
    void setSource(const QUrl&url);



    enum ResizeMode { SizeViewToRootObject, SizeRootObjectToView };
    ResizeMode resizeMode() const;
    void setResizeMode(ResizeMode);

    QxItem *mouseGrabberItem() const;

    QSize sizeHint() const;

Q_SIGNALS:
    void frameStarted();
    void frameEnded();

protected slots:
    void maybeUpdate();

protected:
    virtual void paintEvent(QPaintEvent *);
    virtual void resizeEvent(QResizeEvent *);

    virtual void mousePressEvent(QMouseEvent *);
    virtual void mouseMoveEvent(QMouseEvent *);
    virtual void mouseReleaseEvent(QMouseEvent *);
    virtual void keyPressEvent(QKeyEvent *);
    virtual void keyReleaseEvent(QKeyEvent *);

#ifndef Q_WS_QPA
    virtual void initializeGL();
#endif

private:
    void initializeSceneGraph();

    friend class QxGraphicsViewPrivate;
    Q_DISABLE_COPY(QxGraphicsView)
    QxGraphicsViewPrivate *d;
};

#endif // QXGRAPHICSVIEW_H