public virtual override Xwt.Size GetPreferredSize(Xwt.SizeConstraint widthConstraint, Xwt.SizeConstraint heightConstraint) { throw new NotImplementedException(); }
protected override Xwt.Size OnGetPreferredSize(Xwt.SizeConstraint widthConstraint, Xwt.SizeConstraint heightConstraint) { return(new Xwt.Size(0, image != null ? image.Height : 0)); }