testing/web-platform/tests/html/canvas/offscreen/path-objects/2d.path.stroke.scale2.html

   1 <!DOCTYPE html>
   2 <!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
   3 <title>OffscreenCanvas test: 2d.path.stroke.scale2</title>
   4 <script src="/resources/testharness.js"></script>
   5 <script src="/resources/testharnessreport.js"></script>
   6 <script src="/html/canvas/resources/canvas-tests.js"></script>
   7
   8 <h1>2d.path.stroke.scale2</h1>
   9 <p class="desc">Stroke line widths are scaled by the current transformation matrix</p>
  10
  11
  12 <script>
  13 var t = async_test("Stroke line widths are scaled by the current transformation matrix");
  14 var t_pass = t.done.bind(t);
  15 var t_fail = t.step_func(function(reason) {
  16     throw reason;
  17 });
  18 t.step(function() {
  19
  20 var canvas = new OffscreenCanvas(100, 50);
  21 var ctx = canvas.getContext('2d');
  22
  23 ctx.fillStyle = '#f00';
  24 ctx.fillRect(0, 0, 100, 50);
  25 ctx.beginPath();
  26 ctx.rect(25, 12.5, 50, 25);
  27 ctx.save();
  28 ctx.rotate(Math.PI/2);
  29 ctx.scale(25, 50);
  30 ctx.strokeStyle = '#0f0';
  31 ctx.stroke();
  32 ctx.restore();
  33 ctx.beginPath();
  34 ctx.rect(-25, -12.5, 150, 75);
  35 ctx.save();
  36 ctx.rotate(Math.PI/2);
  37 ctx.scale(25, 50);
  38 ctx.strokeStyle = '#f00';
  39 ctx.stroke();
  40 ctx.restore();
  41 _assertPixel(canvas, 0,0, 0,255,0,255);
  42 _assertPixel(canvas, 50,0, 0,255,0,255);
  43 _assertPixel(canvas, 99,0, 0,255,0,255);
  44 _assertPixel(canvas, 0,25, 0,255,0,255);
  45 _assertPixel(canvas, 50,25, 0,255,0,255);
  46 _assertPixel(canvas, 99,25, 0,255,0,255);
  47 _assertPixel(canvas, 0,49, 0,255,0,255);
  48 _assertPixel(canvas, 50,49, 0,255,0,255);
  49 _assertPixel(canvas, 99,49, 0,255,0,255);
  50 t.done();
  51
  52 });
  53 </script>