2d.imageData.put.modified.html (1374B)
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.put.modified</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.put.modified</h1> 12 <p class="desc">putImageData() puts modified image data correctly</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 <p class="output expectedtext">Expected output:<p><img src="/images/green-100x50.png" class="output expected" id="expected" alt=""> 18 <ul id="d"></ul> 19 <script> 20 var t = async_test("putImageData() puts modified image data correctly"); 21 _addTest(function(canvas, ctx) { 22 23 ctx.fillStyle = '#0f0'; 24 ctx.fillRect(0, 0, 100, 50) 25 ctx.fillStyle = '#f00'; 26 ctx.fillRect(45, 20, 10, 10) 27 var imgdata = ctx.getImageData(45, 20, 10, 10); 28 for (var i = 0, len = imgdata.width*imgdata.height*4; i < len; i += 4) 29 { 30 imgdata.data[i] = 0; 31 imgdata.data[i+1] = 255; 32 } 33 ctx.putImageData(imgdata, 45, 20); 34 _assertPixelApprox(canvas, 50,25, 0,255,0,255, 2); 35 36 }); 37 </script>