单行文字压缩处理(要指定字体)

        /// <summary>
        /// 单行文字压缩处理
         /// </summary>
        /// <param name="txt">单行文字</param>
        /// <param name="dL">需要压到的长度</param>
        public static void RarDBText(Database db, DBText txt, double dL)
        {
            if (txt.TextString.Equals("")) return;
            txt.TextStyle = db.Textstyle; //因为不同的字体它的范围不同，如果没有此句，将默认为gbig字体，将出现偏差
            double ange = txt.Rotation;
            TextHorizontalMode horM = txt.HorizontalMode;

            txt.Rotation = 0;
            txt.HorizontalMode = TextHorizontalMode.TextLeft;

            double xL = txt.GeometricExtents.MaxPoint.X - txt.Position.X;

            if (xL > dL)
            {
                txt.WidthFactor = txt.WidthFactor * (dL / xL);
            }

            //还原
            txt.Rotation = ange;
            txt.HorizontalMode = horM;
        }