void AddSpanElement(string text, Point location)
        {
            var tf      = new Typeface(new FontFamily("Times New Roman"), FontStyles.Normal, FontWeight.FromOpenTypeWeight(400), FontStretch.FromOpenTypeStretch(5));
            var info    = new CaptionInfo(location.X, location.Y, text, 12d, tf);
            var element = TextSpan.FromCaptionInfo(info);

            AddCanvasElement(element);
        }
        void AddSpanElement(CaptionInfo info)
        {
            var element = TextSpan.FromCaptionInfo(info);

            AddCanvasElement(element);
        }