+ void FlipSelectionHandleImages()
+ {
+ SetupTouchEvents();
+
+ CreateSelectionHandles();
+
+ HandleImpl& leftHandle = mHandle[LEFT_SELECTION_HANDLE];
+ HandleImpl& rightHandle = mHandle[RIGHT_SELECTION_HANDLE];
+
+ const HandleImageType leftImageType = leftHandle.pressed ? HANDLE_IMAGE_PRESSED : HANDLE_IMAGE_RELEASED;
+ const HandleImageType rightImageType = rightHandle.pressed ? HANDLE_IMAGE_PRESSED : HANDLE_IMAGE_RELEASED;
+ const bool leftFlipped = mSwapSelectionHandles != leftHandle.flipped;
+ const bool rightFlipped = mSwapSelectionHandles != rightHandle.flipped;
+
+ leftHandle.actor.SetImage( leftFlipped ? mHandleImages[RIGHT_SELECTION_HANDLE][leftImageType] : mHandleImages[LEFT_SELECTION_HANDLE][leftImageType] );
+
+ leftHandle.actor.SetAnchorPoint( leftFlipped ? AnchorPoint::TOP_LEFT : AnchorPoint::TOP_RIGHT );
+
+ rightHandle.actor.SetImage( rightFlipped ? mHandleImages[LEFT_SELECTION_HANDLE][rightImageType] : mHandleImages[RIGHT_SELECTION_HANDLE][rightImageType] );
+
+ rightHandle.actor.SetAnchorPoint( rightFlipped ? AnchorPoint::TOP_RIGHT : AnchorPoint::TOP_LEFT );
+ }
+
+ void SetScrollThreshold( float threshold )
+ {
+ mScrollThreshold = threshold;
+ }
+
+ float GetScrollThreshold() const
+ {
+ return mScrollThreshold;
+ }
+
+ void SetScrollSpeed( float speed )
+ {
+ mScrollSpeed = speed;
+ mScrollDistance = speed * SCROLL_TICK_INTERVAL * TO_SECONDS;
+ }
+
+ float GetScrollSpeed() const
+ {
+ return mScrollSpeed;
+ }
+
+ void NotifyEndOfScroll()
+ {
+ StopScrollTimer();
+
+ if( mScrollTimer )
+ {
+ mNotifyEndOfScroll = true;
+ }
+ }
+
+ /**
+ * Creates and starts a timer to scroll the text when handles are close to the edges of the text.
+ *
+ * It only starts the timer if it's already created.
+ */
+ void StartScrollTimer()
+ {
+ if( !mScrollTimer )
+ {
+ mScrollTimer = Timer::New( SCROLL_TICK_INTERVAL );
+ mScrollTimer.TickSignal().Connect( this, &Decorator::Impl::OnScrollTimerTick );
+ }
+
+ if( !mScrollTimer.IsRunning() )
+ {
+ mScrollTimer.Start();
+ }
+ }
+
+ /**
+ * Stops the timer used to scroll the text.
+ */
+ void StopScrollTimer()
+ {
+ if( mScrollTimer )
+ {
+ mScrollTimer.Stop();
+ }
+ }
+
+ /**
+ * Callback called by the timer used to scroll the text.
+ *
+ * It calculates and sets a new scroll position.
+ */
+ bool OnScrollTimerTick()
+ {
+ if( HANDLE_TYPE_COUNT != mHandleScrolling )
+ {
+ mController.DecorationEvent( mHandleScrolling,
+ HANDLE_SCROLLING,
+ mScrollDirection == SCROLL_RIGHT ? mScrollDistance : -mScrollDistance,
+ 0.f );
+ }
+
+ return true;
+ }
+
+ ControllerInterface& mController;