月更

AntDesignWPF/Converters/ThicknessReverseConverter.cs

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+namespace AntDesign.WPF.Converters
+{
+    using System;
+    using System.Globalization;
+    using System.Windows;
+    using System.Windows.Data;
+    using System.Windows.Markup;
+
+    [ValueConversion(typeof(Thickness), typeof(Thickness))]
+    public class ThicknessReverseConverter : MarkupExtension, IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            var thickness = (Thickness)value;
+
+            thickness.Left *= -1;
+            thickness.Top *= -1;
+
+            thickness.Right *= -1;
+            thickness.Bottom *= -1;
+
+            return thickness;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return DependencyProperty.UnsetValue;
+        }
+
+        public override object ProvideValue(IServiceProvider serviceProvider)
+        {
+            return this;
+        }
+    }
+}