From 55b3b005b8cd11fb93202dfc74714d3de23f00fd Mon Sep 17 00:00:00 2001
From: Yury Delendik <ydelendik@mozilla.com>
Date: Thu, 9 Aug 2012 13:40:40 -0500
Subject: [PATCH] Using createImageData when available

---
 src/canvas.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/canvas.js b/src/canvas.js
index 97ff8f8d4..9f61ba77b 100644
--- a/src/canvas.js
+++ b/src/canvas.js
@@ -1279,7 +1279,8 @@ function checkPutBinaryImageDataCompatibility() {
   } catch (e) {
     CanvasGraphics.prototype.putBinaryImageData =
       function CanvasGraphicsPutBinaryImageDataShim(ctx, imgData, w, h) {
-        var tmpImgData = ctx.getImageData(0, 0, w, h);
+        var tmpImgData = 'createImageData' in ctx ? ctx.createImageData(w, h) :
+          ctx.getImageData(0, 0, w, h);
 
         var tmpImgDataPixels = tmpImgData.data;
         var data = imgData.data;