/*

* Copyright (c) 2009 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:   ?Description

*

*/

#ifndef GLXCOVERFLOW_H

#define GLXCOVERFLOW_H

#define NBR_ICON_ITEM 5

#include <hbeffect.h>

//forward declaration

class HbIconItem;

class HbMainWindow;

class QAbstractItemModel;

typedef enum

{

    NO_MOVE,

    TAP_MOVE,

    LEFT_MOVE,

    RIGHT_MOVE,

    LONGPRESS_MOVE,

} GlxUserMove;

typedef enum

{

    TAP_EVENT, //send the signal when user tap on full screen

    PANNING_START_EVENT, //send the signal when panning of full screen start

    EMPTY_ROW_EVENT //send the signal when model have no data

} GlxCoverFlowEvent;

class GlxCoverFlow : public HbWidget

{

Q_OBJECT

public :

	GlxCoverFlow (QGraphicsItem *parent = NULL);

	~GlxCoverFlow ();

    void setItemSize (QSize &size);

    void setModel (QAbstractItemModel *model);

    void indexChanged (int index);

    void setUiOn(bool uiOn) { mUiOn = uiOn; }

    void partiallyClean();

    void partiallyCreate(QAbstractItemModel *model, QSize itemSize);

	void setCoverFlow();

    void ClearCoverFlow();

	void setMultitouchFilter(QGraphicsItem* multitouchFilter);

public slots:

	void zoomStarted(int index);

	void zoomFinished(int index);

signals :

    void coverFlowEvent(GlxCoverFlowEvent e);

    void changeSelectedIndex(const QModelIndex &index);

    void autoLeftMoveSignal();

    void autoRightMoveSignal();

    void doubleTapEventReceived(QPointF position);

protected slots:

    void panGesture ( const QPointF & delta )  ;

    void longPressGesture(const QPointF &point) ;

    void dataChanged(QModelIndex startIndex, QModelIndex endIndex);

    void rowsInserted(const QModelIndex &parent, int start, int end);

    void rowsRemoved(const QModelIndex &parent, int start, int end);

    void autoLeftMove();

    void autoRightMove();

protected:

	void gestureEvent(QGestureEvent *event);

    void move(int value);

    void setRows() ;

    void setStripLen();

    int calculateIndex(int index);

    void loadIconItems (); 

    void updateIconItem (qint16 selIndex, qint16 selIconIndex, qint16 deltaX);

    void clearCurrentModel();

    void initializeNewModel();

    void resetCoverFlow();

    int getSubState();

    void timerEvent(QTimerEvent *event);

private:

	HbIconItem *mIconItem[NBR_ICON_ITEM];      //at most contain only five item

    qint16 mSelItemIndex;                    // current full screen index

    qint16 mRows;                        // total number of item  

    //QModelIndex mIndex;                  //current model index of seleced item

    qint16 mSelIndex;                    // remove once model concept is integreted

    qint32 mStripLen;                    //virtual strip lenght

    qint32 mCurrentPos;                   //current postion in the virtual strip

    QSize mItemSize;                     //hb icon item size

    bool mUiOn;

    int mBounceBackDeltaX;

    QAbstractItemModel *mModel;

    GlxUserMove mMoveDir;

    int mSpeed;        

	bool mZoomOn;

	QGraphicsItem* mMultitouchFilter;

    int mTimerId;

};

#endif /* GLXCOVERFLOW_H_ */