void RaiseInputEvent(MultitouchDevice device, IInputElement inputElement, ContactInfo contactInfo, RoutedEvent routedEvent)
{
ContactEventArgs e = new ContactEventArgs(device, contactInfo);
device.SetTarget(inputElement);
e.RoutedEvent = routedEvent;
InputManager.Current.ProcessInput(e);
}
internal void Input(IEnumerable <ContactInfo> contactInfos)
{
foreach (ContactInfo contactInfo in contactInfos)
{
ContactAction clickAction = clickStates.GetAction(contactInfo);
RoutedEvent routedEvent = null;
switch (contactInfo.State)
{
case ContactState.Down:
routedEvent = MultitouchScreen.ContactDownEvent;
break;
case ContactState.Up:
routedEvent = MultitouchScreen.ContactUpEvent;
break;
case ContactState.Move:
routedEvent = MultitouchScreen.ContactMoveEvent;
break;
default:
break;
}
if (routedEvent != null)
{
dispatcher.Invoke(DispatcherPriority.Input,
(Action)(delegate
{
try
{
Point localPoint = Application.Current.MainWindow.PointFromScreen(contactInfo.Center);
IInputElement inputElement = Application.Current.MainWindow.InputHitTest(localPoint);
MultitouchDevice device;
if (!devices.TryGetValue(contactInfo.Id, out device))
{
//novoe kasanie v predelah elementa. posilaem snachalo ContactEnterEvent.
device = new MultitouchDevice(contactInfo.Id, inputElement);
devices.Add(contactInfo.Id, device);
ContactEventArgs mouseEnter = new ContactEventArgs(device, contactInfo);
mouseEnter.RoutedEvent = MultitouchScreen.ContactEnterEvent;
InputManager.Current.ProcessInput(mouseEnter);
}
else
{
if (device.Target != inputElement)
{
//staroe kasanie popalo na novij element. posilaem ContactLeaveEvent v starij element.
ContactEventArgs mouseLeave = new ContactEventArgs(device, contactInfo);
mouseLeave.RoutedEvent = MultitouchScreen.ContactLeaveEvent;
try
{
InputManager.Current.ProcessInput(mouseLeave);
}
finally
{
devices.Remove(contactInfo.Id);
}
}
}
//posilaem event v element.
RaiseInputEvent(device, inputElement, contactInfo, routedEvent);
//esli bil click ili double click, to posilaem ih tozhe.
if (clickAction == ContactAction.Click)
{
RaiseInputEvent(device, inputElement, contactInfo, MultitouchScreen.ContactClickEvent);
}
else if (clickAction == ContactAction.DoubleClick)
{
RaiseInputEvent(device, inputElement, contactInfo, MultitouchScreen.ContactDoubleClickEvent);
}
if (routedEvent == MultitouchScreen.ContactUpEvent)
{
devices.Remove(contactInfo.Id);
}
}
catch (Exception ex)
{
Trace.TraceError(ex.ToString());
}
}));
}
}
}
