/****************************************************************************

**

** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (developer.feedback@nokia.com)

**

** This file is part of the HbCore module of the UI Extensions for Mobile.

**

** GNU Lesser General Public License Usage

** This file may be used under the terms of the GNU Lesser General Public

** License version 2.1 as published by the Free Software Foundation and

** appearing in the file LICENSE.LGPL included in the packaging of this file.

** Please review the following information to ensure the GNU Lesser General

** Public License version 2.1 requirements will be met:

** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at developer.feedback@nokia.com.

**

****************************************************************************/

#ifndef HBSCROLLBAR_H

#define HBSCROLLBAR_H

#include <hbwidget.h>

class HbScrollBarPrivate;

class HbStyleOptionScrollBar;

class HB_CORE_EXPORT HbScrollBar : public HbWidget

{

    Q_OBJECT

    Q_PROPERTY( qreal value READ value WRITE setValue )

    Q_PROPERTY( qreal pageSize READ pageSize WRITE setPageSize )

    Q_PROPERTY( Qt::Orientation orientation READ orientation WRITE setOrientation )

    Q_PROPERTY( bool interactive READ isInteractive WRITE setInteractive )

public:

    explicit HbScrollBar( QGraphicsItem *parent = 0 );

    explicit HbScrollBar( Qt::Orientation orientation, QGraphicsItem *parent = 0 );

    virtual ~HbScrollBar();

    qreal value() const;

    qreal pageSize() const;

    Qt::Orientation orientation() const;

    enum {

        Type = Hb::ItemType_ScrollBar

    };

    int type() const { return Type; }

    bool isInteractive() const;

    QRectF boundingRect() const;

public slots:

    void setValue( qreal value );

    void setPageSize( qreal size );

    void setOrientation( Qt::Orientation orientation );

    virtual void updatePrimitives();

signals:

    void valueChanged( qreal value, Qt::Orientation orientation );

    void valueChangeRequested( qreal value, Qt::Orientation orientation );

protected:

    void initStyleOption( HbStyleOptionScrollBar *option ) const;

    void mousePressEvent( QGraphicsSceneMouseEvent *event );

    void mouseMoveEvent( QGraphicsSceneMouseEvent *event );

    void mouseReleaseEvent( QGraphicsSceneMouseEvent *event );

    void timerEvent( QTimerEvent *event );

    bool event(QEvent *event);

    void updateGeometry();

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

    void polish( HbStyleParameters& params );

    void resizeEvent(QGraphicsSceneResizeEvent *event);

    void gestureEvent(QGestureEvent* event);

private:

    Q_DECLARE_PRIVATE_D( d_ptr, HbScrollBar )

    Q_DISABLE_COPY(HbScrollBar)

};

#endif //HBSCROLLBAR_H