*/
public Pop inElement (Element<?> elem) {
Point tl = Layer.Util.layerToScreen(elem.layer, 0, 0);
Point br = Layer.Util.layerToScreen(
elem.layer, elem.size().width(), elem.size().height());
bounds = new Rectangle(tl.x(), tl.y(), br.x() - tl.x(), br.y() - tl.y());
return this;
}
/**
* Pops up this instance on the trigger's root's menu host. See {@link MenuHost#popup(Pop)}.