/*

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

* All rights reserved.

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU Lesser General Public License as published by

* the Free Software Foundation, version 2.1 of the License.

*

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

* GNU Lesser General Public License for more details.

*

* You should have received a copy of the GNU Lesser General Public License

* along with this program.  If not,

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

*

* Description:

*

*/

#ifndef ScrollableViewBase_h

#define ScrollableViewBase_h

#include "Kinetics/KineticScrollable.h"

#include <QGraphicsWidget>

namespace GVA {

class KineticScroller;

class ScrollableViewBase : public QGraphicsWidget, public KineticScrollable {

public:

    ScrollableViewBase(QGraphicsItem* parent = 0, Qt::WindowFlags wFlags = 0);

    ~ScrollableViewBase();

    void setWidget(QGraphicsWidget*);

protected:

    //KineticScrollable pure virtuals

    QSize viewportSize() const;

    QPoint maximumScrollPosition() const ;

    QPoint scrollPosition() const;

    void setScrollPosition(const QPoint& pos, const QPoint& overshootDelta);

    void stateChanged(KineticScrollable::State oldState, KineticScrollable::State newState);

    QGraphicsWidget* scrollWidget() const { return m_scrollWidget; }

    virtual void setScrollWidgetGeometry(const QRectF& r);

    QRectF adjustScrollWidgetRect(const QRectF&);

    //Helpers for adjusting scroll pos

    void setScrollWidgetPos(const QPointF& pos);

    QPointF scrollWidgetPos() const;

protected:

    KineticScroller* m_kineticScroller;

private:

    QGraphicsWidget* m_scrollWidget;

    QPointF m_overShoot;

    QPointF m_extraPos;

}; //ScrollableViewBase

} //namespace GVA

#endif //ScrollableViewBase_h