public TouchEvents(TouchEventsTrigger t)
{
t.TouchDown =
e =>
{
if (TouchDown != null)
{
TouchDown(e);
}
};
t.TouchMove =
e =>
{
if (TouchMove != null)
{
TouchMove(e);
}
};
t.TouchUp =
e =>
{
if (TouchUp != null)
{
TouchUp(e);
}
};
}
public ToTouchEvents(UIElement that, Func <TouchEvents, T> NextTouchContext)
{
var s = new Stack <TouchEventsTriggerTuple>();
var x = new Dictionary <int, TouchEventsTriggerTuple>();
Func <TouchEventsTriggerTuple> Pop = delegate
{
if (s.Count > 0)
{
return(s.Pop());
}
var tet = new TouchEventsTrigger();
var te = new TouchEvents(tet);
var n = NextTouchContext(te);
this.Touches.Add(n);
return(new TouchEventsTriggerTuple {
Touch = n, Trigger = tet
});
};
that.TouchDown += (k, e) =>
{
var id = e.TouchDevice.Id;
if (x.ContainsKey(id))
{
return;
}
var m = Pop();
x[id] = m;
if (this.TouchDown != null)
{
this.TouchDown(m.Touch, e);
}
e.Handled = true;
m.Trigger.TouchDown(e);
};
that.TouchMove += (k, e) =>
{
var id = e.TouchDevice.Id;
if (!x.ContainsKey(id))
{
var m = Pop();
x[id] = m;
if (this.TouchDown != null)
{
this.TouchDown(m.Touch, e);
}
m.Trigger.TouchDown(e);
}
{
var m = x[id];
if (this.TouchMove != null)
{
this.TouchMove(m.Touch, e);
}
e.Handled = true;
m.Trigger.TouchMove(e);
}
};
that.TouchUp += (k, e) =>
{
var id = e.TouchDevice.Id;
if (!x.ContainsKey(id))
{
return;
}
{
var m = x[id];
s.Push(m);
x.Remove(id);
if (this.TouchUp != null)
{
this.TouchUp(m.Touch, e);
}
m.Trigger.TouchUp(e);
}
};
}