1 /*

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

     3 * All rights reserved.

     4 *

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

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

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

     8 *

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

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

    11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    12 * GNU Lesser General Public License for more details.

    13 *

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

    15 * along with this program.  If not,

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

    17 *

    18 * Description:

    19 *

    20 */

    21 

    22 #ifndef ScrollableWebContentView_h

    23 #define ScrollableWebContentView_h

    24 

    25 #include "Gestures/GestureEvent.h"

    26 #include "Gestures/GestureListener.h"

    27 #include "Gestures/GestureRecognizer.h"

    28 #include "ScrollableViewBase.h"

    29 #include "ZoomMetaData.h"

    30 

    31 #include <QPropertyAnimation>

    32 #include <QTimer>

    33 

    34 class QWebHitTestResult;

    35 

    36 namespace GVA {

    37 

    38 class ViewportMetaData;

    39 class WebContentAnimationItem;

    40 

    41 class ScrollableWebContentView : public ScrollableViewBase, protected GestureListener {

    42     Q_OBJECT

    43 public:

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

    45     ~ScrollableWebContentView();

    46 

    47     WebContentAnimationItem* viewportWidget() const;

    48     void zoomToScreenCenter(bool zoomIn);

    49 

    50     ZoomMetaData currentPageInfo();

    51     void setCurrentPageInfo(ZoomMetaData data);

    52     ZoomMetaData defaultZoomData();

    53     void updatePreferredContentSize();

    54     void setSuperPage();

    55 

    56 Q_SIGNALS:

    57     void contextEventObject(QWebHitTestResult* eventTarget);

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

    59 

    60 public Q_SLOTS:

    61     void reset();

    62     void contentsSizeChanged(const QSize&);

    63     void pageLoadFinished(bool);

    64 

    65 protected:

    66     bool sceneEventFilter(QGraphicsItem*, QEvent*);

    67 

    68     //From GestureListener

    69     void handleGesture(GestureEvent*);

    70 

    71     //Helpers

    72     void handlePress(GestureEvent*);

    73     void handleRelease(GestureEvent*);

    74     void handleFlick(GestureEvent*);

    75     void handleDoubleTap(GestureEvent*);

    76     void handlePan(GestureEvent*);

    77     void handleLongTap(GestureEvent*);

    78 

    79     void setViewportWidgetGeometry(const QRectF& r);

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

    81     bool isZoomedIn() const;

    82 

    83     //To handle kinetic scroller state changes

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

    85 

    86     void startZoomAnimation(const QRectF& zoomedRect);

    87     void stopZoomAnimation();

    88     void updateZoomEndRect();

    89     void resizeEvent(QGraphicsSceneResizeEvent* event);

    90     void adjustViewportSize(QSizeF oldSize, QSizeF newSize);

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

    92    

    93 protected Q_SLOTS:

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

    95 

    96 private:

    97     GestureRecognizer m_gestureRecognizer;

    98     QRectF m_animationEndRect;

    99     QPropertyAnimation* m_zoomAnimator;          //Animates zooming transitions

   100     ViewportMetaData* m_viewportMetaData;

   101     QTimer m_tileUpdateEnableTimer;

   102 }; //ScrollableWebContentView

   103 

   104 } //namespace GVA

   105 

   106 #endif //ScrollableWebContentView_h