private void CoalesceEvents(InteropTouchEventArgs e)
{
TimeSpan span = DateTime.Now - lastEventTime;
Vector delta = e.Location - lastEventPosition;
if (lastEventType != EventType.TouchMoveIntermediate)
{
intermediateEvents.Clear();
}
if (span.TotalMilliseconds < timeThreshold ||
Math.Ceiling(delta.Length) < movementThreshold)
{
intermediateEvents.Add(e);
lastEventType = EventType.TouchMoveIntermediate;
//Debug.WriteLine("Event NO: " + touch.TouchDevice.Id + " " + point.Position.ToString() + " " + touch.Timestamp.ToString());
}
else
{
//Debug.WriteLine("Event go: " + touch.TouchDevice.Id + " " + point.Position.ToString() + " " + touch.Timestamp.ToString());
lastEventPosition = e.Location;
lastEventTime = DateTime.Now;
lastEventType = EventType.TouchMove;
this.lastEventArgs = e;
this.ReportMove();
}
}
private void TouchMove(InteropTouchEventArgs e)
{
if (!this.IsActive)
{
return;
}
CoalesceEvents(e);
}
static void TouchDown(object sender, InteropTouchEventArgs e)
{
NativeTouchDevice device = null;
if (!deviceDictionary.Keys.Contains(e.Id))
{
device = new NativeTouchDevice(e);
deviceDictionary.Add(e.Id, device);
}
if (device != null)
{
device.TouchDown(e);
}
}
static void TouchMove(object sender, InteropTouchEventArgs e)
{
int id = e.Id;
if (!deviceDictionary.Keys.Contains(id))
{
TouchDown(sender, e);
}
NativeTouchDevice device = deviceDictionary[id];
if (device != null)
{
device.TouchMove(e);
}
}
private void TouchDown(InteropTouchEventArgs e)
{
if (lastEventType != EventType.TouchMoveIntermediate)
{
intermediateEvents.Clear();
}
this.lastEventArgs = e;
lastEventPosition = e.Location;
lastEventTime = DateTime.Now;
lastEventType = EventType.TouchDown;
this.SetActiveSource(e.ActiveSource);
this.Activate();
this.ReportDown();
}
private void TouchUp(InteropTouchEventArgs e)
{
if (lastEventType != EventType.TouchMoveIntermediate)
{
intermediateEvents.Clear();
}
if (!this.IsActive)
{
return;
}
this.lastEventArgs = e;
this.ReportUp();
this.Deactivate();
lastEventType = EventType.TouchUp;
}
public NativeTouchDevice(InteropTouchEventArgs e) :
base(e.Id)
{
lastEventArgs = e;
}