Merge pull request mozilla#5660 from timvandermeij/thumbnails-setimage

Fill temporary canvases with a white background too
speedplane · Feb 24, 2015 · b51167c · b51167c
2 parents 65322af + 5ec2b35
commit b51167c
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/web/thumbnail_view.js b/web/thumbnail_view.js
@@ -190,6 +190,15 @@ var ThumbnailView = function thumbnailView(container, id, defaultViewport,
     }
     tempCanvas.width = width;
     tempCanvas.height = height;
+
+    // Since this is a temporary canvas, we need to fill
+    // the canvas with a white background ourselves.
+    // |getPageDrawContext| uses CSS rules for this.
+    var ctx = tempCanvas.getContext('2d');
+    ctx.save();
+    ctx.fillStyle = 'rgb(255, 255, 255)';
+    ctx.fillRect(0, 0, width, height);
+    ctx.restore();
     return tempCanvas;
   }