From 06246bb0f269e7f3f70ec80c030822b68eb118ca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mats=20Sj=C3=B6berg?= <mats@sjoberg.fi>
Date: Wed, 23 Oct 2013 19:21:53 +0300
Subject: [PATCH] getOffset() now falls back to old slower version for CSS
 layouts which cannot figure out bounding box widths. This fixes the photo and
 attachment upload buttons for some themes such as vier.

---
 js/ajaxupload.js | 36 ++++++++++++++++++++++--------------
 1 file changed, 22 insertions(+), 14 deletions(-)

diff --git a/js/ajaxupload.js b/js/ajaxupload.js
index 67c4a56fb7..1c34b11b9e 100644
--- a/js/ajaxupload.js
+++ b/js/ajaxupload.js
@@ -57,6 +57,22 @@
             timeout = setTimeout(fn, 100);                        
         });
     }    
+
+    // Get offset adding all offsets, slow fall-back method
+    var getOffsetSlow = function(el){
+        var top = 0, left = 0;
+        do {
+            top += el.offsetTop || 0;
+            left += el.offsetLeft || 0;
+            el = el.offsetParent;
+        } while (el);
+        
+        return {
+            left: left,
+            top: top
+        };
+    };
+
     
     // Needs more testing, will be rewriten for next version        
     // getOffset function copied from jQuery lib (http://jquery.com/)
@@ -78,6 +94,11 @@
                 var bound = body.getBoundingClientRect();
                 zoom = (bound.right - bound.left) / body.clientWidth;
             }
+
+            // some CSS layouts gives 0 width and/or bounding boxes
+            // in this case we fall back to the slow method
+            if (zoom == 0 || body.clientWidth == 0)
+                return getOffsetSlow(el);
             
             if (zoom > 1) {
                 clientTop = 0;
@@ -92,20 +113,7 @@
             };
         };        
     } else {
-        // Get offset adding all offsets 
-        var getOffset = function(el){
-            var top = 0, left = 0;
-            do {
-                top += el.offsetTop || 0;
-                left += el.offsetLeft || 0;
-                el = el.offsetParent;
-            } while (el);
-            
-            return {
-                left: left,
-                top: top
-            };
-        };
+      var getOffset = getOffsetSlow;
     }
     
     /**