protected virtual void OnRequestRectChange(Node sender, RequestRectChangeEventArg arg)
{
// Make a temporary copy of the event to avoid possibility of
// a race condition if the last subscriber unsubscribes
// immediately after the null check and before the event is raised.
var handler = RequestRectChange;
if (handler != null)
{
handler?.Invoke(sender, arg);
}
}
protected virtual void OnChildRequestRectChange(object sender, RequestRectChangeEventArg args)
{
var i = Childs.IndexOf(args.Requester);
if (i >= 0)
{
Childs[i].FixedRect = true;
}
RecalcDeltaWithHeight();
if (!TryUpdateChildRect(0, Childs.Count, out RECT newRect))
{
base.UpdateRect(newRect);
RecalcDeltaWithHeight();
OnRequestRectChange(this, new RequestRectChangeEventArg(this, Rect, newRect));
}
}
