public bool Vingette()
        {
            SoftFocus f = effect as SoftFocus;

            if (f == null)
            {
                f      = new SoftFocus(current);
                effect = f;
            }

            QueueDraw();
            return(true);
        }
        public bool Vingette()
        {
            SoftFocus f = effect as SoftFocus;

            if (f == null) {
                f = new SoftFocus (current);
                effect = f;
            }

            QueueDraw ();
            return true;
        }