public override void ParentSizeChanged(Size oldSize, Size newSize)
{
Point p = Position;
if (ParentAttachPoint.IsMiddleX())
{
p.X += (Size.Width - oldSize.Width) / 2 - (Size.Width - newSize.Width) / 2;
}
else if (ParentAttachPoint.IsRight())
{
p.X += newSize.Width - oldSize.Width;
}
if (ParentAttachPoint.IsMiddleY())
{
p.Y += (Size.Height - oldSize.Height) / 2 - (Size.Height - newSize.Height) / 2;
}
else if (ParentAttachPoint.IsBottom())
{
p.Y += newSize.Height - oldSize.Height;
}
Position = p;
LastParentSize = newSize;
}
