private void OnMouseLeave(object sender, MouseEventArgs e)
{
var c = AssociatedObject.Template.FindName("PART_CANVAS", AssociatedObject) as Canvas;
if (c != null)
{
foreach (var child in c.Children.OfType <Path>())
{
PathExtensions.SetIsDimmed(child, false);
}
}
}
private void OnMouseMove(object sender, MouseEventArgs e)
{
if (this.canvas == null)
{
this.canvas = AssociatedObject.Template.FindName("PART_CANVAS", AssociatedObject) as Canvas;
}
if (canvas != null)
{
var pt = e.GetPosition((UIElement)sender);
Path hit = null;
HitTestResultCallback callback = r =>
{
if (r.VisualHit is Path p)
{
hit = p;
return(HitTestResultBehavior.Stop);
}
return(HitTestResultBehavior.Continue);
};
VisualTreeHelper.HitTest(AssociatedObject, Filter, callback, new PointHitTestParameters(pt));
if (hit != null)
{
foreach (var child in canvas.Children.OfType <Path>())
{
PathExtensions.SetIsDimmed(child, hit != child);
}
}
else
{
foreach (var child in canvas.Children.OfType <Path>())
{
PathExtensions.SetIsDimmed(child, false);
}
}
}
}