canvas2png.js in webshims-rails-1.12.0

- old
+ new

@@ -1,31 +1,36 @@
 /*
  * canvas2png.js
  *
- * Copyright (c) 2010-2011 Shinya Muramatsu
+ * Copyright (c) 2010-2013 Shinya Muramatsu
  * Released under the MIT License
  * http://flashcanvas.net/
  */
 
 (function(doc) {
 
 var scripts = doc.getElementsByTagName("script");
 var script  = scripts[scripts.length - 1];
 var url     = script.getAttribute("src").replace(/[^\/]+$/, "save.php");
 
-window.canvas2png = function(canvas) {
+window.canvas2png = function(canvas, filename) {
     var tagName = canvas.tagName.toLowerCase();
     if (tagName !== "canvas") {
         return;
     }
 
     if (typeof FlashCanvas !== "undefined") {
-        FlashCanvas.saveImage(canvas);
+        FlashCanvas.saveImage(canvas, filename);
     } else {
+        var action = url;
+        if (filename) {
+            action += "?filename=" + filename;
+        }
+
         var form  = doc.createElement("form");
         var input = doc.createElement("input");
 
-        form.setAttribute("action", url);
+        form.setAttribute("action", action);
         form.setAttribute("method", "post");
 
         input.setAttribute("type",  "hidden");
         input.setAttribute("name",  "dataurl");
         input.setAttribute("value", canvas.toDataURL());