Exemplo n.º 1
0
        private UIElement GetManipulatableElement()
        {
            UIElement element = InputElement.GetContainingUIElement(_directlyOver as DependencyObject) as UIElement;

            if (element != null)
            {
                element = Manipulation.FindManipulationParent(element);
            }

            return(element);
        }
Exemplo n.º 2
0
        private void PromoteMainToManipulation(UIElement manipulatableElement, TouchEventArgs touchEventArgs)
        {
            RoutedEvent routedEvent = touchEventArgs.RoutedEvent;

            if (routedEvent == Touch.TouchDownEvent)
            {
                // When touch goes down or if we're in the middle of a move, capture so that we can
                // start manipulation. We could be in the middle of a move if a device delayed
                // promotion, such as the StylusTouchDevice, due to other gesture detection.
                Capture(manipulatableElement);
            }
            else if ((routedEvent == Touch.TouchUpEvent) && PromotingToManipulation)
            {
                // When touch goes up, release capture so that we can stop manipulation.
                Capture(null);
            }
            else if ((routedEvent == Touch.GotTouchCaptureEvent) && !PromotingToManipulation)
            {
                UIElement element = _captured as UIElement;
                if (element != null && element.IsManipulationEnabled)
                {
                    // When touch gets capture and if the captured element
                    // is manipulable, then add it as a manipulator to
                    // the captured element.
                    _manipulatingElement = new WeakReference(element);
                    Manipulation.AddManipulator(element, this);
                    PromotingToManipulation = true;
                    OnManipulationStarted();
                }
            }
            else if ((routedEvent == Touch.LostTouchCaptureEvent) && PromotingToManipulation && _manipulatingElement != null)
            {
                UIElement element = _manipulatingElement.Target as UIElement;
                _manipulatingElement = null;
                if (element != null)
                {
                    // When touch loses capture, remove it as a manipulator.
                    Manipulation.TryRemoveManipulator(element, this);
                    PromotingToManipulation = false;
                }
            }
        }