private bool PropagageEventRecursive(PointerEventArgs args, Point root, UIElement element, Matrix3x2 currentTransform, Action <UIElement> raiseEvent)
{
bool raised = false;
var elementRect = element.LayoutSlotWithMarginsAndAlignments;
elementRect.X += root.X;
elementRect.Y += root.Y;
var position = args.CurrentPoint.Position;
var pointer = new Pointer(args.CurrentPoint.PointerId, PointerDeviceType.Mouse, false, isInRange: true);
var pointerArgs = new PointerRoutedEventArgs(args, element);
if (element.RenderTransform != null)
{
currentTransform *= element.RenderTransform.MatrixCore;
elementRect = currentTransform.Transform(elementRect);
}
if (elementRect.Contains(position))
{
foreach (var e in element.GetChildren().Reverse().ToArray())
{
if (PropagageEventRecursive(args, elementRect.Location, e, currentTransform, raiseEvent))
{
return(true);
}
}
var isHitTestVisible =
element.GetValue(HitTestVisibilityProperty) is HitTestVisibility hitTestVisibility &&
hitTestVisibility == HitTestVisibility.Visible;
if (isHitTestVisible)
{
if (!element.IsOver(pointer))
{
element.OnNativePointerEnter(pointerArgs);
}
raiseEvent(element);
return(true);
}
}
else
{
bool RecursePointerExited(UIElement e)
{
if (e.IsOver(pointer))
{
foreach (var child in e.GetChildren().Reverse().ToArray())
{
if (RecursePointerExited(child))
{
return(true);
}
}
e.OnNativePointerExited(pointerArgs);
return(true);
}
return(false);
}
RecursePointerExited(element);
}
return(raised);
}
