private IEnumerable <UIElement> ElementAndAncestors(IInputElement mouseOver)
{
UIElement mo = (UIElement)mouseOver;
if (mo != null)
{
yield return(mo);
foreach (UIElement e in VisualTreeHelper.GetAncestors(mo).OfType <UIElement>())
{
yield return(e);
}
}
}
public Point GetPosition(IInputElement relativeTo)
{
Point p = this.GetClientPosition();
Visual v = (Visual)relativeTo;
if (v != null)
{
p -= v.VisualOffset;
foreach (Visual ancestor in VisualTreeHelper.GetAncestors(v).OfType <Visual>())
{
p -= ancestor.VisualOffset;
}
}
return(p);
}