From 5b8cf1cf466c1dd28cbaef54929a02f07eb9ae5e Mon Sep 17 00:00:00 2001
From: tbulle <tbulle@server.fake>
Date: Wed, 8 Oct 2014 09:47:49 +0200
Subject: [PATCH] Check for negative height or width before changing object
 since it will cause an exception

---
 .../WpfDesign.Designer/Project/DesignPanel.cs          | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/DesignPanel.cs b/src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/DesignPanel.cs
index 0a5ba978a3..9b081df142 100644
--- a/src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/DesignPanel.cs
+++ b/src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/DesignPanel.cs
@@ -394,10 +394,12 @@ namespace ICSharpCode.WpfDesign.Designer
 					}
 					else
 					{
-						info.Bounds = new Rect(info.OriginalBounds.Left,
-							info.OriginalBounds.Top,
-							info.OriginalBounds.Width + dx,
-							info.OriginalBounds.Height + dy);
+						if (info.OriginalBounds.Width + dx >= 0 && info.OriginalBounds.Height + dy >= 0)  {
+							info.Bounds = new Rect(info.OriginalBounds.Left,
+							                       info.OriginalBounds.Top,
+							                       info.OriginalBounds.Width + dx,
+							                       info.OriginalBounds.Height + dy);
+						}
 					}
 					
 					placementOp.CurrentContainerBehavior.SetPosition(info);