public override bool OnTouchEvent(MotionEvent e)
{
TouchLocation tlocation;
TouchCollection collection = TouchPanel.Collection;
Vector2 position = Vector2.Zero;
position.X = e.GetX(e.ActionIndex);
position.Y = e.GetY(e.ActionIndex);
UpdateTouchPosition(ref position);
int id = e.GetPointerId(e.ActionIndex);
int index;
switch (e.ActionMasked)
{
// DOWN
case MotionEventActions.Down:
case MotionEventActions.PointerDown:
index = collection.FindIndexById(e.GetPointerId(e.ActionIndex), out tlocation);
if (index < 0)
{
tlocation = new TouchLocation(id, TouchLocationState.Pressed, position);
collection.Add(tlocation);
}
else
{
tlocation.State = TouchLocationState.Pressed;
tlocation.Position = position;
}
break;
// UP
case MotionEventActions.Up:
case MotionEventActions.PointerUp:
index = collection.FindIndexById(e.GetPointerId(e.ActionIndex), out tlocation);
if (index >= 0)
{
tlocation.State = TouchLocationState.Released;
collection[index] = tlocation;
}
break;
// MOVE
case MotionEventActions.Move:
for (int i = 0; i < e.PointerCount; i++)
{
id = e.GetPointerId(i);
position.X = e.GetX(i);
position.Y = e.GetY(i);
UpdateTouchPosition(ref position);
index = collection.FindIndexById(id, out tlocation);
if (index >= 0)
{
tlocation.State = TouchLocationState.Moved;
tlocation.Position = position;
collection[index] = tlocation;
}
}
break;
// CANCEL, OUTSIDE
case MotionEventActions.Cancel:
case MotionEventActions.Outside:
index = collection.FindIndexById(id, out tlocation);
if (index >= 0)
{
tlocation.State = TouchLocationState.Invalid;
collection[index] = tlocation;
}
break;
}
if (gesture != null)
{
GestureListener.CheckForDrag(e, position);
gesture.OnTouchEvent(e);
}
return(true);
}
