/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

#ifndef GRAPHICSITEMFLIPPER_H

#define GRAPHICSITEMFLIPPER_H

#include <QtGui>

// Implements a "flipping" animation between two QGraphicsItems.  The source

// item should be hidden after start() is called and the target item should be 

// shown in response to the finished() signal.  

class GraphicsItemFlipper : public QObject {

  Q_OBJECT

public:

    GraphicsItemFlipper(QGraphicsItem *parent, QGraphicsScene *scene, int duration = 500, uint updateInterval = 10, int zValue = 0);

    ~GraphicsItemFlipper();

    void start(QGraphicsView *view, QGraphicsWidget *sourceWidget, QGraphicsWidget *targetWidget, bool forward = true);

signals:

    void starting();

    void finished();

protected:

    void getPixmaps(QGraphicsView *view, QGraphicsWidget *sourceWidget, QGraphicsWidget *targetWidget);

protected slots:

    void updateFlipStep(qreal value);

    void onFinished();

protected:

    QGraphicsPixmapItem *m_pixmapItem;

    QPixmap *m_sourcePixmap;

    QPixmap *m_targetPixmap;

    QRectF m_sourceRect;

    QRectF m_targetRect;

    QTimeLine m_timeLine;

};

#endif // GRAPHICSITEMFLIPPER_H