content/canvas/test/test_2d.line.join.miter.html

   1 <!DOCTYPE HTML>
   2 <title>Canvas test: 2d.line.join.miter</title>
   3 <!-- Testing: lineJoin 'miter' is rendered correctly -->
   4 <script src="/MochiKit/MochiKit.js"></script>
   5 <script src="/tests/SimpleTest/SimpleTest.js"></script>
   6 <link rel="stylesheet" href="/tests/SimpleTest/test.css">
   7 <body>
   8 <canvas id="c" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
   9 <script>
  10 function isPixel(ctx, x,y, r,g,b,a, pos, colour, d) {
  11     var pixel = ctx.getImageData(x, y, 1, 1);
  12     var pr = pixel.data[0],
  13         pg = pixel.data[1],
  14         pb = pixel.data[2],
  15         pa = pixel.data[3];
  16     ok(r-d <= pr && pr <= r+d &&
  17        g-d <= pg && pg <= g+d &&
  18        b-d <= pb && pb <= b+d &&
  19        a-d <= pa && pa <= a+d,
  20        "pixel "+pos+" is "+pr+","+pg+","+pb+","+pa+"; expected "+colour+" +/- "+d);
  21 }
  22
  23 SimpleTest.waitForExplicitFinish();
  24 MochiKit.DOM.addLoadEvent(function () {
  25
  26 var canvas = document.getElementById('c');
  27 var ctx = canvas.getContext('2d');
  28
  29 ctx.fillStyle = '#0f0';
  30 ctx.fillRect(0, 0, 100, 50);
  31
  32 ctx.lineJoin = 'miter';
  33 ctx.lineWidth = 20;
  34
  35 ctx.fillStyle = '#f00';
  36 ctx.strokeStyle = '#0f0';
  37
  38 ctx.fillStyle = '#f00';
  39 ctx.strokeStyle = '#0f0';
  40
  41 ctx.fillRect(10, 10, 30, 20);
  42 ctx.fillRect(20, 10, 20, 30);
  43
  44 ctx.beginPath();
  45 ctx.moveTo(10, 20);
  46 ctx.lineTo(30, 20);
  47 ctx.lineTo(30, 40);
  48 ctx.stroke();
  49
  50
  51 ctx.fillStyle = '#0f0';
  52 ctx.strokeStyle = '#f00';
  53
  54 ctx.beginPath();
  55 ctx.moveTo(60, 20);
  56 ctx.lineTo(80, 20);
  57 ctx.lineTo(80, 40);
  58 ctx.stroke();
  59
  60 ctx.fillRect(60, 10, 30, 20);
  61 ctx.fillRect(70, 10, 20, 30);
  62
  63 isPixel(ctx, 38,12, 0,255,0,255, "38,12", "0,255,0,255", 0);
  64 isPixel(ctx, 39,11, 0,255,0,255, "39,11", "0,255,0,255", 0);
  65 isPixel(ctx, 40,10, 0,255,0,255, "40,10", "0,255,0,255", 0);
  66 isPixel(ctx, 41,9, 0,255,0,255, "41,9", "0,255,0,255", 0);
  67 isPixel(ctx, 42,8, 0,255,0,255, "42,8", "0,255,0,255", 0);
  68
  69 isPixel(ctx, 88,12, 0,255,0,255, "88,12", "0,255,0,255", 0);
  70 isPixel(ctx, 89,11, 0,255,0,255, "89,11", "0,255,0,255", 0);
  71 isPixel(ctx, 90,10, 0,255,0,255, "90,10", "0,255,0,255", 0);
  72 isPixel(ctx, 91,9, 0,255,0,255, "91,9", "0,255,0,255", 0);
  73 isPixel(ctx, 92,8, 0,255,0,255, "92,8", "0,255,0,255", 0);
  74
  75 SimpleTest.finish();
  76
  77 });
  78 </script>
  79