content/canvas/test/test_toBlob.html@6474c204b198 (annotated)
content/canvas/test/test_toBlob.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.
| michael@0 | 1 | <!DOCTYPE HTML> |
| michael@0 | 2 | <title>Canvas test: toBlob</title> |
| michael@0 | 3 | <script src="/tests/SimpleTest/SimpleTest.js"></script> |
| michael@0 | 4 | <link rel="stylesheet" href="/tests/SimpleTest/test.css"> |
| michael@0 | 5 | <body> |
| michael@0 | 6 | <canvas id="c" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas> |
| michael@0 | 7 | <script> |
| michael@0 | 8 | |
| michael@0 | 9 | function BlobListener(type, canvas, callback, file) |
| michael@0 | 10 | { |
| michael@0 | 11 | is(file.type, type, |
| michael@0 | 12 | "When a valid type is specified that should be returned"); |
| michael@0 | 13 | var reader = new FileReader(); |
| michael@0 | 14 | reader.onload = |
| michael@0 | 15 | function(e) { |
| michael@0 | 16 | is(e.target.result, canvas.toDataURL(type), |
| michael@0 | 17 | "<canvas>.mozGetAsFile().getAsDataURL() should equal <canvas>.toDataURL()"); |
| michael@0 | 18 | callback(canvas); |
| michael@0 | 19 | }; |
| michael@0 | 20 | reader.readAsDataURL(file); |
| michael@0 | 21 | } |
| michael@0 | 22 | |
| michael@0 | 23 | function test1(canvas) |
| michael@0 | 24 | { |
| michael@0 | 25 | canvas.toBlob(BlobListener.bind(undefined, "image/png", canvas, test2)); |
| michael@0 | 26 | } |
| michael@0 | 27 | |
| michael@0 | 28 | function test2(canvas) |
| michael@0 | 29 | { |
| michael@0 | 30 | canvas.toBlob( |
| michael@0 | 31 | BlobListener.bind(undefined, "image/jpeg", canvas, SimpleTest.finish), |
| michael@0 | 32 | "image/jpeg"); |
| michael@0 | 33 | } |
| michael@0 | 34 | |
| michael@0 | 35 | SimpleTest.waitForExplicitFinish(); |
| michael@0 | 36 | addLoadEvent(function () { |
| michael@0 | 37 | |
| michael@0 | 38 | var canvas = document.getElementById('c'); |
| michael@0 | 39 | var ctx = canvas.getContext('2d'); |
| michael@0 | 40 | ctx.drawImage(document.getElementById('yellow75.png'), 0, 0); |
| michael@0 | 41 | |
| michael@0 | 42 | test1(canvas); |
| michael@0 | 43 | |
| michael@0 | 44 | }); |
| michael@0 | 45 | </script> |
| michael@0 | 46 | <img src="image_yellow75.png" id="yellow75.png" class="resource"> |
| michael@0 | 47 |
