public override void TouchesBeganWithEvent(NSEvent aEvent)
{
if (!Enabled)
{
return;
}
NSSet touches = aEvent.TouchesMatchingPhaseinView(NSTouchPhase.Touching, View);
if (touches.Count == 2)
{
iInitialPoint = View.ConvertPointFromBase(aEvent.LocationInWindow);
foreach (NSTouch t in touches.ToArray <NSTouch>())
{
iInitialTouches.Add(t);
iCurrentTouches.Add(t);
}
}
else if (touches.Count > 2)
{
if (iIsTracking)
{
CancelTracking();
}
}
}
public override void TouchesMovedWithEvent(NSEvent aEvent)
{
if (!Enabled)
{
return;
}
iModifiers = aEvent.ModifierFlags;
NSSet touches = aEvent.TouchesMatchingPhaseinView(NSTouchPhase.Touching, View);
if (touches.Count == 2 && iInitialTouches.Count > 0)
{
foreach (NSTouch t in touches.ToArray <NSTouch>())
{
if (t == iInitialTouches[0])
{
iCurrentTouches[0] = t;
}
else
{
iCurrentTouches[1] = t;
}
}
if (!iIsTracking)
{
PointF deltaOrigin = DeltaOrigin();
SizeF deltaSize = DeltaSize();
if (Math.Abs(deltaOrigin.X) > iThreshold || Math.Abs(deltaOrigin.Y) > iThreshold || Math.Abs(deltaSize.Width) > iThreshold || Math.Abs(deltaSize.Height) > iThreshold)
{
iIsTracking = true;
if (EventBegin != null)
{
EventBegin(this, EventArgs.Empty);
}
}
}
else
{
if (EventUpdate != null)
{
EventUpdate(this, EventArgs.Empty);
}
}
}
}
