public Size?GetPartSize(Graphics graphics, StateTypeId state)
{
VisualStyleRenderer renderer = GetRenderer(state);
if (renderer == null)
{
return(null);
}
Size size = renderer.GetPartSize(graphics, ThemeSizeType.True);
return(size.AddHorizontally(_paddingLeft?.GetPartSize(graphics, state),
_paddingRight?.GetPartSize(graphics, state)));
}
