/*

* 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 HGCOVERFLOWCONTAINER_H

#define HGCOVERFLOWCONTAINER_H

#include <hgwidgets/hgmediawall.h>

#include "HgContainer.h"

class HgCenterItemArea;

class HgCoverflowContainer: public HgContainer

{

    Q_OBJECT

    Q_DISABLE_COPY(HgCoverflowContainer)

public:

    explicit HgCoverflowContainer(QGraphicsItem* parent = 0);

    virtual ~HgCoverflowContainer();

    // events

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

    // from HgContainer

    virtual HgMediaWallRenderer* createRenderer(Qt::Orientation scrollDirection);

    virtual qreal getCameraDistance(qreal springVelocity);

    virtual qreal getCameraRotationY(qreal springVelocity);

    virtual void handleTapAction(const QPointF& pos, HgWidgetItem* hitItem, int hitItemIndex);

    virtual void handleLongTapAction(const QPointF& pos, HgWidgetItem* hitItem, int hitItemIndex);

    virtual void onScrollPositionChanged(qreal pos);

    virtual void scrollToPosition(const QPointF& pos, bool animate);

    virtual QSizeF getAutoItemSize() const;

    virtual QSizeF getAutoItemSpacing() const;

    virtual void updateItemSizeAndSpacing();

    void setFrontItemPositionDelta(const QPointF& position);

    QPointF frontItemPositionDelta() const;

    void setFrontItemElevationFactor(qreal factor);

    void enableReflections(bool enabled);

    bool reflectionsEnabled() const;

    void setCenterItemArea(HgCenterItemArea *centerItemArea);

public slots:

    void updateItemSize();

signals:

    void animationAboutToEnd(const QModelIndex& targetIndex);

private:

    void calculateItemSize();

    void onScrollingStarted();

    void onScrollingEnded();

    void resizeEvent(QGraphicsSceneResizeEvent *event);

private:

    int              mPrevPos;

    QSizeF           mAutoSize;

    bool             mAnimationAboutToEndReacted;

    HgCenterItemArea *mCenterItemArea;

};

#endif