protected override void OnAttached()
{
// Get the Android View corresponding to the Element that the effect is attached to
view = Control == null ? Container : Control;
// Get access to the TouchEffect class in the .NET Standard library
UITestDemo.TouchEffect touchEffect =
(UITestDemo.TouchEffect)Element.Effects.
FirstOrDefault(e => e is UITestDemo.TouchEffect);
if (touchEffect != null && view != null)
{
viewDictionary.Add(view, this);
formsElement = Element;
libTouchEffect = touchEffect;
// Save fromPixels function
fromPixels = view.Context.FromPixels;
// Set event handler on View
view.Touch += OnTouch;
}
}
protected override void OnAppearing()
{
base.OnAppearing();
btnClear.Clicked += BtnClear_Clicked;
//btnInput.Clicked += BtnInput_Clicked;
TouchEffect touchEffect = new TouchEffect();
touchEffect.TouchAction += TouchEffect_TouchAction;
bvTarget.Effects.Add(touchEffect);
}
private void TouchEffect_TouchAction(object sender, TouchActionEventArgs args)
{
BoxView box = sender as BoxView;
switch (args.Type)
{
case TouchActionType.Pressed:
if (!dragDictionary.ContainsKey(box))
{
dragDictionary.Add(box, new DragInfo(args.Id, args.Location));
TouchEffect touchEffect = (TouchEffect)box.Effects.FirstOrDefault(e => e is TouchEffect);
touchEffect.Capture = true;
}
break;
case TouchActionType.Moved:
if (dragDictionary.ContainsKey(box) && dragDictionary[box].Id == args.Id)
{
Rectangle rect = AbsoluteLayout.GetLayoutBounds(box);
Point initialLocation = dragDictionary[box].PressPoint;
rect.X += args.Location.X - initialLocation.X;
rect.Y += args.Location.Y - initialLocation.Y;
AbsoluteLayout.SetLayoutBounds(box, rect);
}
break;
case TouchActionType.Released:
if (dragDictionary.ContainsKey(box) && dragDictionary[box].Id == args.Id)
{
dragDictionary.Remove(box);
//show the result on the label
txtResult.Text += string.Format(" ({0},{1}) ", Math.Round(box.X, 2), Math.Round(box.Y, 2));
}
break;
}
}