iTextSharp.text.html.Markup.ParseLength C# (CSharp) Метод

        public static float ParseLength(String str, float actualFontSize) {
            if (str == null)
                return 0f;
            int pos = 0;
            int length = str.Length;
            bool ok = true;
            while (ok && pos < length) {
                switch (str[pos]) {
                    case '+':
                    case '-':
                    case '0':
                    case '1':
                    case '2':
                    case '3':
                    case '4':
                    case '5':
                    case '6':
                    case '7':
                    case '8':
                    case '9':
                    case '.':
                        pos++;
                        break;
                    default:
                        ok = false;
                        break;
                }
            }
            if (pos == 0) return 0f;
            if (pos == length) return float.Parse(str, System.Globalization.NumberFormatInfo.InvariantInfo);
            float f = float.Parse(str.Substring(0, pos), System.Globalization.NumberFormatInfo.InvariantInfo);
            str = str.Substring(pos);
            // inches
            if (str.StartsWith("in")) {
                return f * 72f;
            }
            // centimeters
            if (str.StartsWith("cm")) {
                return (f / 2.54f) * 72f;
            }
            // millimeters
            if (str.StartsWith("mm")) {
                return (f / 25.4f) * 72f;
            }
            // picas
            if (str.StartsWith("pc")) {
                return f * 12f;
            }
            // 1em is equal to the current font size
            if (str.StartsWith("em")) {
                return f * actualFontSize;
            }
            // one ex is the x-height of a font (x-height is usually about half the
            // font-size)
            if (str.StartsWith("ex")) {
                return f * actualFontSize / 2;
            }
            // default: we assume the length was measured in points
            return f;
        }