Initial

BrightSharp/Diagrams/Adorners/SizeAdorner.cs

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+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Documents;
+using System.Windows.Media;
+
+namespace Diagrams
+{
+    public class SizeAdorner : Adorner
+    {
+        private SizeChrome chrome;
+        private VisualCollection visuals;
+        private ContentControl designerItem;
+
+        protected override int VisualChildrenCount
+        {
+            get
+            {
+                return this.visuals.Count;
+            }
+        }
+
+        public SizeAdorner(ContentControl designerItem)
+            : base(designerItem)
+        {
+            this.SnapsToDevicePixels = true;
+            this.designerItem = designerItem;
+            this.chrome = new SizeChrome();
+            this.chrome.DataContext = designerItem;
+            this.visuals = new VisualCollection(this);
+            this.visuals.Add(this.chrome);
+        }
+
+        protected override Visual GetVisualChild(int index)
+        {
+            return this.visuals[index];
+        }
+
+        protected override Size ArrangeOverride(Size arrangeBounds)
+        {
+            this.chrome.Arrange(new Rect(new Point(0.0, 0.0), arrangeBounds));
+            return arrangeBounds;
+        }
+    }
+}