private static Point CalculatePositionRelativeToRect(Rect rect, RectRelativePlacement childPlacement, Size childSize)
{
var childCenterPointRelativeToRect = childPlacement.GetPositionRelativeTo(rect);
var childCenterToTopLeftVector = new Vector(-childSize.Width / 2, -childSize.Height / 2);
return(childCenterPointRelativeToRect + childCenterToTopLeftVector);
}
private static Point CalculateChildPosition(Rect decoratedRect, RectRelativePlacement childPlacement, Size childSize)
{
var childCenterPointRelativeToParent = childPlacement.GetPositionRelativeTo(decoratedRect);
var childCenterToTopLeftVector = new Vector(-childSize.Width / 2, -childSize.Height / 2);
var childTopLeftPointRelativeToParent = childCenterPointRelativeToParent + childCenterToTopLeftVector;
return(childTopLeftPointRelativeToParent);
}
public static void SetPlacement(UIElement element, RectRelativePlacement value) => element.SetValue(PlacementProperty, value);
