content/canvas/test/test_2d.drawImage.outsidesource.html

   1 <!DOCTYPE HTML>
   2 <title>Canvas test: 2d.drawImage.outsidesource</title>
   3 <script src="/MochiKit/MochiKit.js"></script>
   4 <script src="/tests/SimpleTest/SimpleTest.js"></script>
   5 <link rel="stylesheet" href="/tests/SimpleTest/test.css">
   6 <body>
   7 <canvas id="c" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
   8 <script>
   9 function isPixel(ctx, x,y, r,g,b,a, pos, colour, d) {
  10     var pixel = ctx.getImageData(x, y, 1, 1);
  11     var pr = pixel.data[0],
  12         pg = pixel.data[1],
  13         pb = pixel.data[2],
  14         pa = pixel.data[3];
  15     ok(r-d <= pr && pr <= r+d &&
  16        g-d <= pg && pg <= g+d &&
  17        b-d <= pb && pb <= b+d &&
  18        a-d <= pa && pa <= a+d,
  19        "pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d);
  20 }
  21 function todo_isPixel(ctx, x,y, r,g,b,a, pos, colour, d) {
  22     var pixel = ctx.getImageData(x, y, 1, 1);
  23     var pr = pixel.data[0],
  24         pg = pixel.data[1],
  25         pb = pixel.data[2],
  26         pa = pixel.data[3];
  27     todo(r-d <= pr && pr <= r+d &&
  28        g-d <= pg && pg <= g+d &&
  29        b-d <= pb && pb <= b+d &&
  30        a-d <= pa && pa <= a+d,
  31        "pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d);
  32 }
  33
  34 SimpleTest.waitForExplicitFinish();
  35 MochiKit.DOM.addLoadEvent(function () {
  36
  37 var canvas = document.getElementById('c');
  38 var ctx = canvas.getContext('2d');
  39
  40 var _thrown_outer = false;
  41 try {
  42
  43 ctx.drawImage(document.getElementById('green.png'), 10.5, 10.5, 89.5, 39.5, 0, 0, 100, 50);
  44 ctx.drawImage(document.getElementById('green.png'), 5.5, 5.5, -5.5, -5.5, 0, 0, 100, 50);
  45 ctx.drawImage(document.getElementById('green.png'), 100, 50, -5, -5, 0, 0, 100, 50);
  46 var _thrown = undefined; try {
  47   ctx.drawImage(document.getElementById('red.png'), -0.001, 0, 100, 50, 0, 0, 100, 50);
  48 } catch (e) { _thrown = e }; ok(_thrown && _thrown.code == DOMException.INDEX_SIZE_ERR, "should throw INDEX_SIZE_ERR");
  49 var _thrown = undefined; try {
  50   ctx.drawImage(document.getElementById('red.png'), 0, -0.001, 100, 50, 0, 0, 100, 50);
  51 } catch (e) { _thrown = e }; ok(_thrown && _thrown.code == DOMException.INDEX_SIZE_ERR, "should throw INDEX_SIZE_ERR");
  52 var _thrown = undefined; try {
  53   ctx.drawImage(document.getElementById('red.png'), 0, 0, 100.001, 50, 0, 0, 100, 50);
  54 } catch (e) { _thrown = e }; ok(_thrown && _thrown.code == DOMException.INDEX_SIZE_ERR, "should throw INDEX_SIZE_ERR");
  55 var _thrown = undefined; try {
  56   ctx.drawImage(document.getElementById('red.png'), 0, 0, 100, 50.001, 0, 0, 100, 50);
  57 } catch (e) { _thrown = e }; ok(_thrown && _thrown.code == DOMException.INDEX_SIZE_ERR, "should throw INDEX_SIZE_ERR");
  58 var _thrown = undefined; try {
  59   ctx.drawImage(document.getElementById('red.png'), 50, 0, 50.001, 50, 0, 0, 100, 50);
  60 } catch (e) { _thrown = e }; todo(_thrown && _thrown.code == DOMException.INDEX_SIZE_ERR, "should throw INDEX_SIZE_ERR");
  61 var _thrown = undefined; try {
  62   ctx.drawImage(document.getElementById('red.png'), 0, 0, -5, 5, 0, 0, 100, 50);
  63 } catch (e) { _thrown = e }; ok(_thrown && _thrown.code == DOMException.INDEX_SIZE_ERR, "should throw INDEX_SIZE_ERR");
  64 var _thrown = undefined; try {
  65   ctx.drawImage(document.getElementById('red.png'), 0, 0, 5, -5, 0, 0, 100, 50);
  66 } catch (e) { _thrown = e }; ok(_thrown && _thrown.code == DOMException.INDEX_SIZE_ERR, "should throw INDEX_SIZE_ERR");
  67 var _thrown = undefined; try {
  68   ctx.drawImage(document.getElementById('red.png'), 110, 60, -20, -20, 0, 0, 100, 50);
  69 } catch (e) { _thrown = e }; ok(_thrown && _thrown.code == DOMException.INDEX_SIZE_ERR, "should throw INDEX_SIZE_ERR");
  70 todo_isPixel(ctx, 50,25, 0,255,0,255, "50,25", "0,255,0,255", 2);
  71
  72 } catch (e) {
  73     _thrown_outer = true;
  74 }
  75 todo(!_thrown_outer, 'should not throw exception');
  76
  77 SimpleTest.finish();
  78
  79 });
  80 </script>
  81 <img src="image_green.png" id="green.png" class="resource">
  82 <img src="image_red.png" id="red.png" class="resource">
  83