private static void UpdateShadowDepth(UIElement element, ShadowDepth shadowDepth, bool loaded = false)
{
var adornerLayer = AdornerLayer.GetAdornerLayer(element);
if (adornerLayer == null)
{
if (!loaded)
{
element.Dispatcher.InvokeAsync(() => UpdateShadowDepth(element, shadowDepth, true), DispatcherPriority.Loaded);
}
return;
}
var topMostAdornerLayer = adornerLayer;
//while (topMostAdornerLayer != null)
//{
// topMostAdornerLayer = AdornerLayer.GetAdornerLayer(topMostAdornerLayer);
//}
var shadowAdorner = GetShadowAdorner(element);
if (shadowDepth == ShadowDepth.Depth0)
{
if (shadowAdorner != null)
{
SetShadowAdorner(element, null);
topMostAdornerLayer.Remove(shadowAdorner);
}
}
else
{
if (shadowAdorner == null)
{
shadowAdorner = new ShadowAdorner(element);
MaterialDesignThemes.Wpf.ShadowAssist.SetShadowDepth(shadowAdorner.Shadow, shadowDepth);
topMostAdornerLayer.Add(shadowAdorner);
SetShadowAdorner(element, shadowAdorner);
}
else
{
MaterialDesignThemes.Wpf.ShadowAssist.SetShadowDepth(shadowAdorner.Shadow, shadowDepth);
}
}
}
public static void SetShadowAdorner(DependencyObject obj, ShadowAdorner value)
{
obj.SetValue(ShadowAdornerProperty, value);
}