public override bool OnTouchEvent(MotionEvent e)
{
//System.Diagnostics.Debug.WriteLine("=============================================================");
//System.Diagnostics.Debug.WriteLine("NativeGestureDetector.OnTouchEvent e.Action=[" + e.Action + "]");
bool handled = base.OnTouchEvent(e);
//System.Diagnostics.Debug.WriteLine("NativeGestureDetector.OnTouchEvent handled=" + handled);
if (e.PointerCount > 1 && _listener != null)
{
// multi point gesture ?
bool[] valid = new bool[6];
MotionEvent.PointerCoords[] coords = new MotionEvent.PointerCoords[6];
for (int i = 0; i < Math.Min(e.PointerCount, 6); i++)
{
coords[i] = new MotionEvent.PointerCoords();
var index = e.FindPointerIndex(i);
if (index > -1 && index < 6)
{
valid[index] = true;
e.GetPointerCoords(index, coords[i]);
if (_lastCoords != null && _lastCoords[i] != null)
{
_avgCoords[i].X = (float)((coords[i].X + _lastCoords[i].X) / 2.0);
_avgCoords[i].Y = (float)((coords[i].Y + _lastCoords[i].Y) / 2.0);
}
_lastCoords = coords;
}
}
if (e.Action == MotionEventActions.Down || e.Action == MotionEventActions.Pointer1Down || e.Action == MotionEventActions.Pointer2Down)
{
handled = handled || _listener.OnMultiDown(e, _lastCoords);
}
else if (e.Action == MotionEventActions.Move)
{
handled = handled || _listener.OnMultiMove(e, _avgCoords);
}
else if (e.Action == MotionEventActions.Cancel || e.Action == MotionEventActions.Up || e.Action == MotionEventActions.Pointer1Up || e.Action == MotionEventActions.Pointer2Up)
{
handled = handled || _listener.OnMultiUp(e, _avgCoords);
_lastCoords = null;
}
}
// the following line was once needed but now it seems to cause double "UPS" to be called when used with Bc3.Forms.KeypadButton;
//else if (e.ActionMasked == MotionEventActions.Up || e.ActionMasked == MotionEventActions.Pointer1Up || (e.Action == MotionEventActions.Down && _lastMotionEvent != null && _lastMotionEvent.Action == MotionEventActions.Down))
else if (e.ActionMasked == MotionEventActions.Up || e.ActionMasked == MotionEventActions.Pointer1Up)
{
_listener?.OnUp(e);
}
else if (e.Action == MotionEventActions.Cancel)
{
_listener?.Cancel(e);
}
_lastMotionEvent = e;
return(handled);
}
public override bool OnTouchEvent(MotionEvent e)
{
System.Diagnostics.Debug.WriteLine("NativeGestureDetector.OnTouchEvent e.Action=[" + e.Action + "]");
bool handled = base.OnTouchEvent(e);
//System.Diagnostics.Debug.WriteLine("NativeGestureDetector.OnTouchEvent handled=" + handled);
if (e.PointerCount > 1 && _listener != null)
{
// multi point gesture ?
bool[] valid = new bool[6];
MotionEvent.PointerCoords[] coords = null;
coords = new MotionEvent.PointerCoords[6];
for (int i = 0; i < Math.Min(e.PointerCount, 6); i++)
{
coords[i] = new MotionEvent.PointerCoords();
var index = e.FindPointerIndex(i);
if (index > -1 && index < 6)
{
valid[index] = true;
e.GetPointerCoords(index, coords[i]);
if (_lastCoords != null && _lastCoords[i] != null)
{
_avgCoords[i].X = (float)((coords[i].X + _lastCoords[i].X) / 2.0);
_avgCoords[i].Y = (float)((coords[i].Y + _lastCoords[i].Y) / 2.0);
}
_lastCoords = coords;
}
}
if (e.Action == MotionEventActions.Down || e.Action == MotionEventActions.Pointer1Down || e.Action == MotionEventActions.Pointer2Down)
{
handled = handled || _listener.OnMultiDown(e, _lastCoords);
}
else if (e.Action == MotionEventActions.Move)
{
handled = handled || _listener.OnMultiMove(e, _avgCoords);
}
else if (e.Action == MotionEventActions.Cancel || e.Action == MotionEventActions.Up || e.Action == MotionEventActions.Pointer1Up || e.Action == MotionEventActions.Pointer2Up)
{
handled = handled || _listener.OnMultiUp(e, _avgCoords);
_lastCoords = null;
}
}
else if (e.ActionMasked == MotionEventActions.Up || e.ActionMasked == MotionEventActions.Pointer1Up)
{
_listener?.OnUp(e);
}
else if (e.Action == MotionEventActions.Cancel)
{
_listener?.Cancel();
}
return(handled);
}