/*

* 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 ScrollableWebContentView_h

#define ScrollableWebContentView_h

#include "Gestures/GestureEvent.h"

#include "Gestures/GestureListener.h"

#include "Gestures/GestureRecognizer.h"

#include "ScrollableViewBase.h"

#include "ZoomMetaData.h"

#include <QPropertyAnimation>

#include <QTimer>

class QWebHitTestResult;

namespace GVA {

class ViewportMetaData;

class WebContentAnimationItem;

class ScrollableWebContentView : public ScrollableViewBase, protected GestureListener {

    Q_OBJECT

public:

    ScrollableWebContentView(WebContentAnimationItem* viewportProxyWidget, QGraphicsItem* parent = 0);

    ~ScrollableWebContentView();

    WebContentAnimationItem* viewportWidget() const;

    void zoomToScreenCenter(bool zoomIn);

    ZoomMetaData currentPageInfo();

    void setCurrentPageInfo(ZoomMetaData data);

    ZoomMetaData defaultZoomData();

    void updatePreferredContentSize();

    void setSuperPage();

Q_SIGNALS:

    void contextEventObject(QWebHitTestResult* eventTarget);

    void viewScrolled(QPoint& scrollPos, QPoint& delta);

public Q_SLOTS:

    void reset();

    void contentsSizeChanged(const QSize&);

    void pageLoadFinished(bool);

protected:

    bool sceneEventFilter(QGraphicsItem*, QEvent*);

    //From GestureListener

    void handleGesture(GestureEvent*);

    //Helpers

    void handlePress(GestureEvent*);

    void handleRelease(GestureEvent*);

    void handleFlick(GestureEvent*);

    void handleDoubleTap(GestureEvent*);

    void handlePan(GestureEvent*);

    void handleLongTap(GestureEvent*);

    void setViewportWidgetGeometry(const QRectF& r);

    void startZoomAnimToItemHotspot(const QPointF& hotspot, const QPointF& viewTargetHotspot, qreal scale, QRectF target = QRectF());

    bool isZoomedIn() const;

    //To handle kinetic scroller state changes

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

    void startZoomAnimation(const QRectF& zoomedRect);

    void stopZoomAnimation();

    void updateZoomEndRect();

    void resizeEvent(QGraphicsSceneResizeEvent* event);

    void adjustViewportSize(QSizeF oldSize, QSizeF newSize);

    void sendEventToWebKit(QEvent::Type type, QPointF& scenPos);

protected Q_SLOTS:

    void zoomAnimationStateChanged(QAbstractAnimation::State newState, QAbstractAnimation::State);

private:

    GestureRecognizer m_gestureRecognizer;

    QRectF m_animationEndRect;

    QPropertyAnimation* m_zoomAnimator;          //Animates zooming transitions

    ViewportMetaData* m_viewportMetaData;

    QTimer m_tileUpdateEnableTimer;

}; //ScrollableWebContentView

} //namespace GVA

#endif //ScrollableWebContentView_h