Tue, 06 Jan 2015 21:39:09 +0100
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 <!DOCTYPE HTML>
2 <html>
3 <body onload="doTest()">
4 <canvas id="c" width="200" height="200" style="display:block"></canvas>
5 <img id="img" src="image_green-16x16.png" style="display:none">
6 <script>
7 var c = document.getElementById("c");
8 var img = document.getElementById("img");
9 var ctx = c.getContext("2d");
10 ctx.shadowColor = "black";
11 ctx.shadowOffsetX = 0;
12 ctx.shadowOffsetY = 10;
13 function doTest() {
14 ctx.drawImage(img, 0, 0);
15 }
16 </script>
17 </body>
18 </html>