From 96659d72990a7a46f8cffd49ef860287cc5a1b13 Mon Sep 17 00:00:00 2001
From: Jason Follas <jfollas@gmail.com>
Date: Sun, 1 Apr 2012 11:00:58 -0400
Subject: [PATCH] Revert to previous no-parameter (image/png) behavior if an
 exception is encountered while calling canvas toDataURL() with parameters. 
 See this forum post: http://www.kineticjs.com/forum/viewtopic.php?f=10&t=423

---
 src/Stage.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/Stage.js b/src/Stage.js
index ee55b8af..86ad461b 100644
--- a/src/Stage.js
+++ b/src/Stage.js
@@ -161,7 +161,15 @@ Kinetic.Stage.prototype = {
                     addLayer(n);
                 }
                 else {
-                    callback(bufferLayer.getCanvas().toDataURL(mimeType, quality));
+                    try {
+                        // If this call fails (due to browser bug, like in Firefox 3.6),
+                        // then revert to previous no-parameter image/png behavior
+                        callback(bufferLayer.getCanvas().toDataURL(mimeType, quality));
+                    }
+                    catch(exception)
+                    {
+                        callback(bufferLayer.getCanvas().toDataURL());
+                    }
                 }
             };
             imageObj.src = dataURL;