add SplitButtonItem

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

@@ -0,0 +1,33 @@
+using System;
+using System.Globalization;
+using System.Windows;
+using System.Windows.Data;
+
+namespace HandyControl.Tools.Converter
+{
+    public class CornerRadiusSplitConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value is CornerRadius cornerRadius)
+            {
+                if (parameter is string str)
+                {
+                    var arr = str.Split(',');
+                    if (arr.Length != 4) return cornerRadius;
+
+                    return new CornerRadius(arr[0].Equals("1") ? cornerRadius.TopLeft : 0,
+                        arr[1].Equals("1") ? cornerRadius.TopRight : 0,
+                        arr[1].Equals("1") ? cornerRadius.BottomRight : 0,
+                        arr[1].Equals("1") ? cornerRadius.BottomLeft : 0);
+                }
+            }
+            return value;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

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

@@ -0,0 +1,33 @@
+using System;
+using System.Globalization;
+using System.Windows;
+using System.Windows.Data;
+
+namespace HandyControl.Tools.Converter
+{
+    public class ThicknessSplitConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value is Thickness cornerRadius)
+            {
+                if (parameter is string str)
+                {
+                    var arr = str.Split(',');
+                    if (arr.Length != 4) return cornerRadius;
+
+                    return new CornerRadius(arr[0].Equals("1") ? cornerRadius.Left : 0,
+                        arr[1].Equals("1") ? cornerRadius.Top : 0,
+                        arr[1].Equals("1") ? cornerRadius.Right : 0,
+                        arr[1].Equals("1") ? cornerRadius.Bottom : 0);
+                }
+            }
+            return value;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}