/*

* 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 HGGRIDCONTAINER_H

#define HGGRIDCONTAINER_H

#include "hgcontainer.h"

#include <QPropertyAnimation>

#include <QQueue>

class HgWidgetItem;

class HgMediaWallRenderer;

class HbPinchGesture;

class HgGridContainer : public HgContainer

{

    Q_OBJECT

    Q_DISABLE_COPY(HgGridContainer)

public:

    explicit HgGridContainer(QGraphicsItem *parent = 0);

    virtual ~HgGridContainer();

    void setEffect3dEnabled(bool effect3dEnabled);

    bool effect3dEnabled() const;

    void setPinchEnabled(bool pinchEnabled);

    bool pinchEnabled() const;

    void setPinchLevels(QPair<int,int> levels, Qt::Orientation scrollDirection);

    QPair<int,int> pinchLevels(Qt::Orientation scrollDirection) const;

    void setRowCount(int count, Qt::Orientation scrollDirection = Qt::Horizontal);

    int rowCount(Qt::Orientation scrollDirection) const;

signals:

    void emptySpacePressed();

protected:

    // 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 bool handleTapAction(const QPointF& pos, HgWidgetItem* hitItem, int hitItemIndex);

    virtual bool handleLongTapAction(const QPointF& pos, HgWidgetItem* hitItem, int hitItemindex);

    virtual void onScrollPositionChanged(qreal pos);

    virtual bool handleTap(Qt::GestureState state, const QPointF &pos);

    virtual bool handleLongTap(Qt::GestureState state, const QPointF &pos);

    virtual void setOrientation(Qt::Orientation orientation, bool animate=true);

    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);

    void mousePressEvent(QGraphicsSceneMouseEvent *event);

    void gestureEvent(QGestureEvent* event);

    bool event(QEvent *e);

    void handlePinchEnd();

    void handlePinchUpdate(HbPinchGesture* pinch);    

public slots:

    void effectFinished();

private:    

    bool mEffect3dEnabled;

    bool mPinchEnabled;

    bool mPinchingOngoing;

    int mTempImageHeightForLineGrid;    //this is changed during pinching

    int mTempImageHeightFinal;          //this is changed during pinching

    int mTempRowCount;                  //this is changed during pinching

    int mTargetRowCount;

    QQueue<qreal> iTargetRowCountList;

    QSizeF mTargetImageSize;

    bool mPinchEndAlreadyHandled;

    bool mReactToOnlyPanGestures;

    QPropertyAnimation iFadeAnimation;

    int mHorizontalRowCount;

    int mVerticalColumnCount;

    QPair<int,int> mHorizontalPinchLevels;

    QPair<int,int> mVerticalPinchLevels;

};

#endif