void CheckForBoundaryHop(UITouch touch)
{
long id = touch.Handle.ToInt64();
TouchRecognizer recognizerHit = null;
foreach (UIView view in ViewDictionary.Keys)
{
CGPoint location = touch.LocationInView(view);
if (new CGRect(new CGPoint(), view.Frame.Size).Contains(location))
{
recognizerHit = ViewDictionary[view];
}
}
if (!Equals(recognizerHit, IdToTouchDictionary[id]))
{
if (IdToTouchDictionary[id] != null)
{
FireEvent(IdToTouchDictionary[id], id, TouchActionType.Exited, touch, true);
}
if (recognizerHit != null)
{
FireEvent(recognizerHit, id, TouchActionType.Entered, touch, true);
}
IdToTouchDictionary[id] = recognizerHit;
}
}
void FireEvent(TouchRecognizer recognizer, long id, TouchActionType actionType, UITouch touch, bool isInContact)
{
// Convert touch location to Xamarin.Forms Point value
CGPoint cgPoint = touch.LocationInView(recognizer.View);
Point xfPoint = new Point(cgPoint.X, cgPoint.Y);
// Get the method to call for firing events
Action <Element, TouchActionEventArgs> onTouchAction = recognizer._touchEffect.OnTouchAction;
// Call that method
onTouchAction(recognizer._element, new TouchActionEventArgs(id, actionType, xfPoint, isInContact));
}
protected override void OnAttached()
{
// Get the iOS UIView corresponding to the Element that the effect is attached to
_view = Control ?? Container;
// Get access to the TouchEffect class in the PCL
Impromptu.Effects.TouchHandling.TouchEffect effect =
(Impromptu.Effects.TouchHandling.TouchEffect)Element.Effects.FirstOrDefault(e => e is Impromptu.Effects.TouchHandling.TouchEffect);
if (effect != null && _view != null)
{
// Create a TouchRecognizer for this UIView
_touchRecognizer = new TouchRecognizer(Element, _view, effect);
_view.AddGestureRecognizer(_touchRecognizer);
}
}
