TokenEditorPresenter FindNearestPresenter(Point p)
{
var panel = LayoutTreeHelper.GetVisualChildren(AssociatedObject).OfType <TokenEditorPanel>().FirstOrDefault();
if (panel?.Children == null)
{
return(null);
}
var distance = double.MaxValue;
TokenEditorPresenter presenter = null;
for (int i = 0; i < panel.Children.Count; i++)
{
var child = panel.Children[i] as TokenEditorPresenter;
if (child.IsNewTokenEditorPresenter)
{
continue;
}
var bounds = child.TransformToVisual(AssociatedObject).TransformBounds(new Rect(child.RenderSize));
var center = new Point(bounds.X + bounds.Width / 2.0, bounds.Y + bounds.Height / 2.0);
var length = (center - p).LengthSquared;
if (distance > length)
{
distance = length;
presenter = child;
}
}
return(presenter);
}
void AddAdorner(TokenEditorPresenter tokenEditorPresenter, Position position)
{
RemoveAdorner();
var adornerLayer = AdornerLayer.GetAdornerLayer(tokenEditorPresenter);
adornerLayer.Add(new PositionAdorner(tokenEditorPresenter, position));
adornedElement = tokenEditorPresenter;
}
