fixed #441

src/Shared/HandyControl_Shared/Controls/Block/RunningBlock/RunningBorder.cs

@@ -0,0 +1,65 @@
+using System;
+using System.Windows;
+using System.Windows.Controls;
+using HandyControl.Tools;
+
+namespace HandyControl.Controls
+{
+    public class RunningBorder : Border
+    {
+        private bool _test;
+
+        protected override Size MeasureOverride(Size constraint)
+        {
+            if (_test)
+            {
+                _test = false;
+                return constraint;
+            }
+
+            var child = Child;
+            var borderThickness = BorderThickness;
+            var padding = Padding;
+
+            if (UseLayoutRounding)
+            {
+                var dpiScaleX = DpiHelper.DeviceDpiX;
+                var dpiScaleY = DpiHelper.DeviceDpiY;
+
+                borderThickness = new Thickness(
+                    DpiHelper.RoundLayoutValue(borderThickness.Left, dpiScaleX),
+                    DpiHelper.RoundLayoutValue(borderThickness.Top, dpiScaleY),
+                    DpiHelper.RoundLayoutValue(borderThickness.Right, dpiScaleX),
+                    DpiHelper.RoundLayoutValue(borderThickness.Bottom, dpiScaleY));
+            }
+
+            var borderSize = ConvertThickness2Size(borderThickness);
+            var paddingSize = ConvertThickness2Size(padding);
+            var mySize = new Size();
+
+            if (child != null)
+            {
+                var combined = new Size(borderSize.Width + paddingSize.Width, borderSize.Height + paddingSize.Height);
+                var borderConstraint = new Size(Math.Max(0.0, constraint.Width - combined.Width), Math.Max(0.0, constraint.Height - combined.Height));
+                var childConstraint = new Size(Math.Max(0.0, double.PositiveInfinity - combined.Width), Math.Max(0.0, double.PositiveInfinity - combined.Height));
+
+
+                child.Measure(borderConstraint);
+                var childSize = child.DesiredSize;
+
+                mySize.Width = childSize.Width + combined.Width;
+                mySize.Height = childSize.Height + combined.Height;
+
+                child.Measure(childConstraint);
+            }
+            else
+            {
+                mySize = new Size(borderSize.Width + paddingSize.Width, borderSize.Height + paddingSize.Height);
+            }
+
+            return mySize;
+        }
+
+        private static Size ConvertThickness2Size(Thickness th) => new Size(th.Left + th.Right, th.Top + th.Bottom);
+    }
+}