77 

    77 

    78     virtual void itemDataChanged(const int &firstIndex, const int &lastIndex);

    78     virtual void itemDataChanged(const int &firstIndex, const int &lastIndex);

    79 

    79 

    80     void init(Qt::Orientation scrollDirection);

    80     void init(Qt::Orientation scrollDirection);

    81 

    81 

    82 signals:

    96 signals:

    83 

    97 

    84     // emit this signal when scrolling. for example scrollbar can be connected to this signal.

    98     // emit this signal when scrolling. for example scrollbar can be connected to this signal.

    85     void scrollPositionChanged(qreal value, bool scrollBarAnimation);

    99     void scrollPositionChanged(qreal value, bool scrollBarAnimation);

    86     void centerItemChanged(const QModelIndex &index);

   100     void centerItemChanged(const QModelIndex &index);

    93 

   107 

    94     void updateBySpringPosition();

   108     void updateBySpringPosition();

    95     void redraw();

   109     void redraw();

    96     void updateLongPressVisualizer();

   110     void updateLongPressVisualizer();

    97     void updateByCurrentIndex(const QModelIndex &current);

   111     void updateByCurrentIndex(const QModelIndex &current);

    99 

   112 

   100 protected: // from HgMediaWallDataProvider

   113 protected: // from HgMediaWallDataProvider

   101 

   114 

   102     int imageCount() const;

   115     int imageCount() const;

   103     const HgImage *image(int index) const;

   116     const HgImage *image(int index) const;

   114     virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);

   127     virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);

   115     // From HbWidget for gestures.

   128     // From HbWidget for gestures.

   116     virtual void gestureEvent(QGestureEvent *event);

   129     virtual void gestureEvent(QGestureEvent *event);

   117 protected:

   130 protected:

   118 

   131 

   120     virtual qreal getCameraDistance(qreal springVelocity);

   133     virtual qreal getCameraDistance(qreal springVelocity);

   121     virtual qreal getCameraRotationY(qreal springVelocity);

   134     virtual qreal getCameraRotationY(qreal springVelocity);

   122     virtual void handleTapAction(const QPointF& pos, HgWidgetItem* hitItem, int hitItemIndex);

   135     virtual void handleTapAction(const QPointF& pos, HgWidgetItem* hitItem, int hitItemIndex);

   123     virtual void handleLongTapAction(const QPointF& pos, HgWidgetItem* hitItem, int hitItemIndex);

   136     virtual void handleLongTapAction(const QPointF& pos, HgWidgetItem* hitItem, int hitItemIndex);

   124     virtual void onScrollPositionChanged(qreal pos);

   137     virtual void onScrollPositionChanged(qreal pos);

   125     virtual void handleCurrentChanged(const QModelIndex &current);

   138     virtual void handleCurrentChanged(const QModelIndex &current);

   126 

   140 

   127 protected:

   141 protected:

   128 

   142 

   129     enum ItemActionType

   143     enum ItemActionType

   130     {

   144     {

   137 

   151 

   138     qreal worldWidth() const;

   152     qreal worldWidth() const;

   139     void initSpringForScrollBar();

   153     void initSpringForScrollBar();

   140     void initSpringForScrolling();

   154     void initSpringForScrolling();

   141     void boundSpring();

   155     void boundSpring();

   146 

   160 

   147     void selectItem();

   161     void selectItem();

   148     void updateSelectedItem();

   162     void updateSelectedItem();

   149     void unselectItem();

   163     void unselectItem();

   150 

   164 

   151     HgWidgetItem* getItemAt(const QPointF& pos, int& index);

   166     HgWidgetItem* getItemAt(const QPointF& pos, int& index);

   152     void startLongPressWatcher(const QPointF& pos);

   167     void startLongPressWatcher(const QPointF& pos);

   153     void stopLongPressWatcher();

   168     void stopLongPressWatcher();

   154     bool updateSelectionModel(HgWidgetItem* item);

   169     bool updateSelectionModel(HgWidgetItem* item);

   155 

   170 

   156     QTransform qtToVgTransform() const;

   171     QTransform qtToVgTransform() const;

   157     QPointF mapQtToVg(const QPointF& p) const;

   172     QPointF mapQtToVg(const QPointF& p) const;

   158 

   177 

   159 protected: // data

   178 protected: // data

   160 

   179 

   161     QList<HgWidgetItem *> mItems;

   180     QList<HgWidgetItem *> mItems;

   162     //int mRowCount;

   181     //int mRowCount;

   192     int mHitItemIndex;

   211     int mHitItemIndex;

   193 

   212 

   194     QPointF mOffsetAtDragStart;

   213     QPointF mOffsetAtDragStart;

   195     QTime mLongTapDuration;

   214     QTime mLongTapDuration;

   196     bool mScrollBarPressed;

   215     bool mScrollBarPressed;

   198 };

   222 };

   199 

   223 

   200 #endif

   224 #endif