From: Alexander Larsson <alexl@redhat.com>
Date: Fri, 4 Mar 2011 13:21:17 +0000 (+0100)
Subject: dnd: Avoid division by zero, etc for zero-size actors
X-Git-Tag: archive/raspbian/50.5-1+rpi1~1^2~1013^2^2~8734
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=72120bb87fe34895cd52e3e17eb7f020ab6950a7;p=gnome-shell.git

dnd: Avoid division by zero, etc for zero-size actors

When rescaling due to a possible parent actor resize avoid problems
if the parent width is zero.

https://bugzilla.gnome.org/show_bug.cgi?id=643786
---

diff --git a/js/ui/dnd.js b/js/ui/dnd.js
index a755057f1..87515563f 100644
--- a/js/ui/dnd.js
+++ b/js/ui/dnd.js
@@ -480,7 +480,9 @@ _Draggable.prototype = {
             let [parentX, parentY] = this._dragOrigParent.get_transformed_position();
             let [parentWidth, parentHeight] = this._dragOrigParent.get_size();
             let [parentScaledWidth, parentScaledHeight] = this._dragOrigParent.get_transformed_size();
-            let parentScale = parentScaledWidth / parentWidth;
+            let parentScale = 1.0;
+            if (parentWidth != 0)
+                parentScale = parentScaledWidth / parentWidth;
 
             x = parentX + parentScale * this._dragOrigX;
             y = parentY + parentScale * this._dragOrigY;