/// <summary>
/// Since the bounds include only part of the background polygon, the area that
/// needs repainting is really determined by the polygon.
/// </summary>
/// <param name="rect"></param>
/// <param name="view"></param>
/// <returns>a rectangle in document coordinates that includes the background object</returns>
/// <seealso cref="M:Northwoods.Go.GoBalloon.ComputeBounds" />
public override RectangleF ExpandPaintBounds(RectangleF rect, GoView view)
{
GoObject background = Background;
if (background != null)
{
rect = GoObject.UnionRect(rect, background.Bounds);
rect = background.ExpandPaintBounds(rect, view);
}
return(rect);
}