dom/canvas/test/test_mozGetAsFile.html

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