content/canvas/test/file_drawImage_document_domain.html@6474c204b198
content/canvas/test/file_drawImage_document_domain.html
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 <!DOCTYPE html>
2 <canvas id="c" width="1" height="1"></canvas>
3 <img id="img" src="image_green-1x1.png">
4 <script>
5 window.onmessage = function(ev) {
6 if (ev.data != "start") {
7 parent.postMessage({ msg: "unknown_message", data: ev.data }, "*");
8 return;
9 }
11 // Set document.domain to itself, so we trigger the
12 // "set effective script origin" cases.
13 document.domain = document.domain
14 var ctx = document.getElementById("c").getContext("2d");
15 ctx.drawImage(document.getElementById("img"), 0, 0);
16 try {
17 var data = ctx.getImageData(0, 0, 1, 1).data;
18 parent.postMessage(
19 {
20 msg: "color",
21 data: "rgba(" + data[0] + ", " + data[1] + ", " + data[2] + ", " + data[3]/255 + ")"
22 },
23 "*");
24 } catch (e) {
25 parent.postMessage({ msg: "exception", data: e.toString() }, "*");
26 }
28 parent.postMessage({ msg: "done" }, "*");
29 }
30 </script>
