| <!DOCTYPE html> |
| <title>Canvas test: 2d.imageData.create1.initial</title> |
| <meta name="author" content="Philip Taylor"> |
| <script src="../common/canvas-tests.js"></script> |
| <link rel="stylesheet" href="../common/canvas-tests.css"> |
| <body class="show_output"> |
| |
| <h1><a href="index.2d.html">2d</a>.<a href="index.2d.imageData.html">imageData</a>.<a href="index.2d.imageData.create1.html">create1</a>.initial</h1> |
| <p class="desc">createImageData(imgdata) returns transparent black data of the right size</p> |
| |
| <div class="refs">Spec references: |
| <ul> |
| <li><a href="../annotated-spec/canvas.html#testrefs.2d.imageData.create1.size">2d.imageData.create1.size</a> |
| <li><a href="../annotated-spec/canvas.html#testrefs.2d.imageData.create.initial">2d.imageData.create.initial</a> |
| <li><a href="../annotated-spec/canvas.html#testrefs.2d.imageData.initial">2d.imageData.initial</a> |
| </ul> |
| </div> |
| |
| <p class="output">Actual output:</p> |
| <canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas> |
| |
| <ul id="d"></ul> |
| <script> |
| _addTest(function(canvas, ctx) { |
| |
| ctx.fillStyle = '#0f0'; |
| ctx.fillRect(0, 0, 100, 50); |
| var imgdata1 = ctx.getImageData(0, 0, 10, 20); |
| var imgdata2 = ctx.createImageData(imgdata1); |
| _assertEqual(imgdata2.data.length, imgdata1.data.length, "imgdata2.data.length", "imgdata1.data.length"); |
| _assertEqual(imgdata2.width, imgdata1.width, "imgdata2.width", "imgdata1.width"); |
| _assertEqual(imgdata2.height, imgdata1.height, "imgdata2.height", "imgdata1.height"); |
| var isTransparentBlack = true; |
| for (var i = 0; i < imgdata2.data.length; ++i) |
| if (imgdata2.data[i] !== 0) |
| isTransparentBlack = false; |
| _assert(isTransparentBlack, "isTransparentBlack"); |
| |
| |
| }); |
| </script> |
| |
