enhance: optimize input elements.

src/Shared/HandyControl_Shared/Tools/Converter/ThicknessSplitConverter.cs

@@ -14,13 +14,35 @@ public class ThicknessSplitConverter : IValueConverter
             if (parameter is string str)
             {
                 var arr = str.Split(',');
-                if (arr.Length != 4) return thickness;
 
-                return new Thickness(
-                    arr[0].Equals("1") ? thickness.Left : 0,
-                    arr[1].Equals("1") ? thickness.Top : 0,
-                    arr[2].Equals("1") ? thickness.Right : 0,
-                    arr[3].Equals("1") ? thickness.Bottom : 0);
+                if (arr.Length != 4)
+                {
+                    return thickness;
+                }
+
+                var result = new Thickness(thickness.Left, thickness.Top, thickness.Right, thickness.Bottom);
+
+                if (double.TryParse(arr[0], out double leftTimes))
+                {
+                    result.Left = leftTimes * thickness.Left;
+                }
+
+                if (double.TryParse(arr[1], out double topTimes))
+                {
+                    result.Top = topTimes * thickness.Top;
+                }
+
+                if (double.TryParse(arr[2], out double rightTimes))
+                {
+                    result.Right = rightTimes * thickness.Right;
+                }
+
+                if (double.TryParse(arr[3], out double bottomTimes))
+                {
+                    result.Bottom = bottomTimes * thickness.Bottom;
+                }
+
+                return result;
             }
         }
         return value;