public MotionTrackingTouchDevice(HandPointEventArgs e, Window window, MotionTrackingScreen screen)
: base(e.Id)
{
lastEventArgs = e;
if (window == null)
throw new ArgumentNullException("window");
if (screen == null)
throw new ArgumentNullException("screen");
this.screen = screen;
this.rootWindow = window;
}
private void UpdateProperties(HandPointEventArgs e)
{
ShouldPromoteToTouch = false;
this.lastHandPointEventArgs = e;
this.Session = e.Session;
this.Id = e.Id;
lastEventInBounds = currentPositionInBounds;
currentPositionInBounds = screen.IsSessionInBounds(e.Session);
if (currentPositionInBounds)
{
currentPosition = screen.MapPositionToScreen(e.Session);
UpdateDirectlyOver();
}
}
internal void ReportMotionTrackingUpdated(HandPointEventArgs e)
{
UpdateProperties(e);
if (!currentPositionInBounds)
{
if (lastEventInBounds)
{
ProcessMotionTrackingLost();
}
return;
}
if (!lastEventInBounds)
{
ProcessMotionTrackingStarted();
}
ProcessMotionTrackingUpdated();
}
internal void ReportMotionTrackingLost(HandPointEventArgs e)
{
UpdateProperties(e);
if (!lastEventInBounds)
{
return;
}
ProcessMotionTrackingLost();
}
internal void HandPointGenerator_PointUpdated(object sender, HandPointEventArgs e)
{
if (Window == null)
return;
if (!Window.CheckAccess())
{
Window.Dispatcher.Invoke(new EventHandler<HandPointEventArgs>(HandPointGenerator_PointUpdated), System.Windows.Threading.DispatcherPriority.Input, sender, e);
return;
}
int id = e.Id;
if (!deviceDictionary.Keys.Contains(id))
{
HandPointGenerator_PointCreated(sender, e);
}
MotionTrackingDevice device = deviceDictionary[id];
if (device != null)
{
device.ReportMotionTrackingUpdated(e);
}
}
internal void HandPointGenerator_PointCreated(object sender, HandPointEventArgs e)
{
if (Window == null)
return;
if (!Window.CheckAccess())
{
Window.Dispatcher.Invoke(new EventHandler<HandPointEventArgs>(HandPointGenerator_PointCreated), System.Windows.Threading.DispatcherPriority.Input, sender, e);
return;
}
MotionTrackingDevice device = null;
if (!deviceDictionary.Keys.Contains(e.Id))
{
device = new MotionTrackingDevice(Window, Screen);
deviceDictionary.Add(e.Id, device);
}
if (device != null)
{
device.ReportMotionTrackingStarted(e);
}
}
private void CoalesceEvents(HandPointEventArgs e)
{
TimeSpan span = DateTime.Now - lastEventTime;
Vector delta = screen.MapPositionToScreen(e.Session) - 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 = screen.MapPositionToScreen(e.Session);
lastEventTime = DateTime.Now;
lastEventType = EventType.TouchMove;
this.lastEventArgs = e;
this.ReportMove();
}
}
internal void TouchUp(HandPointEventArgs e)
{
if (lastEventType != EventType.TouchMoveIntermediate)
{
intermediateEvents.Clear();
}
if (!this.IsActive)
{
return;
}
this.lastEventArgs = e;
this.Session = null;
this.ReportUp();
this.Deactivate();
lastEventType = EventType.TouchUp;
}
internal void TouchMove(HandPointEventArgs e)
{
if (!this.IsActive)
{
return;
}
this.Session = e.Session;
CoalesceEvents(e);
}
internal void TouchDown(HandPointEventArgs e)
{
if (lastEventType != EventType.TouchMoveIntermediate)
{
intermediateEvents.Clear();
}
this.lastEventArgs = e;
lastEventPosition = screen.MapPositionToScreen(e.Session);
lastEventTime = DateTime.Now;
lastEventType = EventType.TouchDown;
this.Session = e.Session;
var source = PresentationSource.FromVisual(this.rootWindow);
this.SetActiveSource(source);
this.Activate();
this.ReportDown();
}
private static void HandPointGenerator_PointUpdated(object sender, HandPointEventArgs e)
{
List<MotionTrackingClient> clientsCopy = new List<MotionTrackingClient>();
lock (clients)
{
clientsCopy.AddRange(clients);
}
foreach (var client in clientsCopy)
{
client.HandPointGenerator_PointUpdated(sender, e);
}
}