/*

 * 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:  CalenDayContentScrollArea class definition.

 *

 */

#ifndef CALENDAYCONTENTSCROLLAREA_H_

#define CALENDAYCONTENTSCROLLAREA_H_

// System includes

#include <HbScrollArea>

// User includes

#include "calendaycommonheaders.h"

#ifdef  CALENVIEWS_DLL

#define CALENDAYCONTENTSCROLLAREA_EXPORT Q_DECL_EXPORT

#else

#define CALENDAYCONTENTSCROLLAREA_EXPORT Q_DECL_IMPORT

#endif

// Class declaration

class CALENDAYCONTENTSCROLLAREA_EXPORT CalenDayContentScrollArea : public HbScrollArea

{

Q_OBJECT

public:

    CalenDayContentScrollArea(QGraphicsItem *parent = 0);

    virtual ~CalenDayContentScrollArea();

public:

    /*!

     \enum CalenPanDirection

     \brief Enumeration identifies pan gesture directions.

     */

    enum CalenPanDirection

    {

        ECalenPanNotSet = 0,

        ECalenPanVertical,

        ECalenPanHorizontal

    };

signals:

    void scrollAreaMoveStarted(CalenScrollDirection scrollTo);

    void scrollAreaMoveFinished(CalenScrollDirection scrollTo);

public slots:

    void scrollToMiddleWidget();

protected:

    bool scrollByAmount(const QPointF &delta);

    void gestureEvent(QGestureEvent *event);

    bool eventFilter(QObject *obj, QEvent *event);

    bool event(QEvent *e);

private:	// private functions

    void checkPanDirection(QPanGesture *panGesture);

    void moveTo(const QPointF &newPosition, int time = 0);

    bool isHorizontalSwipe(qreal angle) const;

private slots:

    void moveFinished();

    void orientationChanged(Qt::Orientation orientation);

private:    // data

    QPointF mStartPosition;  //!< Start position of movement

    qreal mContentWidth; //!< Content width

    Qt::Orientation mOrientation;   //!< Stores current orientation

    /*!

     \brief Pan gesture direction indicator

     Member is used when switching widgets by panning gesture is enabled.

     */

    CalenPanDirection mPanDayDirection;

    bool mIsMoving; //!< Indicates if moving of scroll area is in progress

    /*!

     \brief Scroll area horizontal move direction

     */

    CalenScrollDirection mMoveDirection;

};

#endif /* CALENDAYCONTENTSCROLLAREA_H_ */