2d.imageData.get.clamp.html (1528B)
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>Canvas test: 2d.imageData.get.clamp</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 <link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css"> 9 <body class="show_output"> 10 11 <h1>2d.imageData.get.clamp</h1> 12 <p class="desc">getImageData() clamps colors to the range [0, 255]</p> 13 14 15 <p class="output">Actual output:</p> 16 <canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas> 17 18 <ul id="d"></ul> 19 <script> 20 var t = async_test("getImageData() clamps colors to the range [0, 255]"); 21 _addTest(function(canvas, ctx) { 22 23 ctx.fillStyle = 'rgb(-100, -200, -300)'; 24 ctx.fillRect(0, 0, 100, 50); 25 ctx.fillStyle = 'rgb(256, 300, 400)'; 26 ctx.fillRect(20, 10, 60, 10); 27 var imgdata1 = ctx.getImageData(10, 5, 1, 1); 28 _assertSame(imgdata1.data[0], 0, "imgdata1.data[\""+(0)+"\"]", "0"); 29 _assertSame(imgdata1.data[1], 0, "imgdata1.data[\""+(1)+"\"]", "0"); 30 _assertSame(imgdata1.data[2], 0, "imgdata1.data[\""+(2)+"\"]", "0"); 31 var imgdata2 = ctx.getImageData(30, 15, 1, 1); 32 _assertSame(imgdata2.data[0], 255, "imgdata2.data[\""+(0)+"\"]", "255"); 33 _assertSame(imgdata2.data[1], 255, "imgdata2.data[\""+(1)+"\"]", "255"); 34 _assertSame(imgdata2.data[2], 255, "imgdata2.data[\""+(2)+"\"]", "255"); 35 36 }); 37 </script>