/*

* 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 __gva_scrollzoomwidget_h__

#define __gva_scrollzoomwidget_h__

#include "NativeChromeItem.h"

class QTimeLine;

namespace GVA {

  class GWebContentView;

  class ScrollZoomWidget : public NativeChromeItem

  {

    Q_OBJECT

  public:

    ScrollZoomWidget(ChromeSnippet* snippet, QGraphicsItem* parent = 0);

    virtual ~ScrollZoomWidget();

    void paint(QPainter* painter, const QStyleOptionGraphicsItem* opt, QWidget* widget);

    void mousePressEvent(QGraphicsSceneMouseEvent * ev);

    void mouseReleaseEvent(QGraphicsSceneMouseEvent * ev);

  public slots:

    void updateZoom(qreal delta);

    void updateScroll(qreal delta);

    void onLoadFinished(bool ok);

  protected:

    QVariant itemChange(GraphicsItemChange change, const QVariant & value);

  private:

    void zoom();

    void scroll();

    bool m_zoomIn;

    bool m_scrolling;

    qreal m_xScale;

    qreal m_yScale;

    qreal m_deltaX;

    qreal m_deltaY;

    qreal m_centerX;

    qreal m_centerY;

    QTimeLine * m_timeLine;

    GWebContentView * m_webView;

    QGraphicsEffect * m_effect;

    QImage m_buttonImage;

  };

} // end of namespace GVA

#endif // __GINEBRA_REDCHROMESNIPPET_H__