public static bool IsUserVisible(this System.Windows.FrameworkElement element, System.Windows.FrameworkElement container)
{
if (!element.IsVisible)
{
return(false);
}
if (container == null)
{
return(true);
}
System.Windows.Rect bounds = element.TransformToAncestor(container).TransformBounds(new System.Windows.Rect(0.0, 0.0, element.ActualWidth, element.ActualHeight));
System.Windows.Rect rect = new System.Windows.Rect(0.0, 0.0, container.ActualWidth, container.ActualHeight);
return(rect.Contains(bounds.TopLeft) || rect.Contains(bounds.BottomRight));
}
