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AIStudio.Wpf.DiagramDesigner/Helpers/GetTextDisplayWidthHelper.cs

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+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Text;
+using System.Windows.Media;
+using System.Windows;
+using System.Windows.Controls;
+
+namespace AIStudio.Wpf.DiagramDesigner.Helpers
+{
+    public class GetTextDisplayWidthHelper
+    {
+        public static Double GetTextDisplayWidth(Label label)
+        {
+
+            return GetTextDisplayWidth(label.Content.ToString(), label.FontFamily, label.FontStyle, label.FontWeight, label.FontStretch, label.FontSize);
+
+        }
+
+        public static Double GetTextDisplayWidth(string str, FontFamily fontFamily, FontStyle fontStyle, FontWeight fontWeight, FontStretch fontStretch, double fontSize)
+        {
+
+            var formattedText = new FormattedText(
+                                str,
+                                CultureInfo.CurrentUICulture,
+                                FlowDirection.LeftToRight,
+                                new Typeface(fontFamily, fontStyle, fontWeight, fontStretch),
+                                fontSize,
+                                Brushes.Black
+                                );
+
+            Size size = new Size(formattedText.Width, formattedText.Height);
+
+            return size.Width;
+
+        }
+    }
+}