2d.strokeRect.negative.html (1155B)
1 <!DOCTYPE html> 2 <!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> 3 <meta charset="UTF-8"> 4 <title>OffscreenCanvas test: 2d.strokeRect.negative</title> 5 <script src="/resources/testharness.js"></script> 6 <script src="/resources/testharnessreport.js"></script> 7 <script src="/html/canvas/resources/canvas-tests.js"></script> 8 9 <h1>2d.strokeRect.negative</h1> 10 <p class="desc">strokeRect of negative sizes works</p> 11 12 13 <script> 14 var t = async_test("strokeRect of negative sizes works"); 15 var t_pass = t.done.bind(t); 16 var t_fail = t.step_func(function(reason) { 17 throw reason; 18 }); 19 t.step(function() { 20 21 var canvas = new OffscreenCanvas(100, 50); 22 var ctx = canvas.getContext('2d'); 23 24 ctx.fillStyle = '#f00'; 25 ctx.fillRect(0, 0, 100, 50); 26 ctx.strokeStyle = '#0f0'; 27 ctx.lineWidth = 25; 28 ctx.strokeRect(12, 12, 26, 1); 29 ctx.strokeRect(88, 12, -26, 1); 30 ctx.strokeRect(12, 38, 26, -1); 31 ctx.strokeRect(88, 38, -26, -1); 32 _assertPixel(canvas, 25,12, 0,255,0,255); 33 _assertPixel(canvas, 75,12, 0,255,0,255); 34 _assertPixel(canvas, 25,37, 0,255,0,255); 35 _assertPixel(canvas, 75,37, 0,255,0,255); 36 t.done(); 37 38 }); 39 </script>