| <!DOCTYPE html> |
| <title>Canvas test: 2d.imageData.get.unaffected</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.get.html">get</a>.unaffected</h1> |
| <p class="desc">getImageData() is not affected by context state</p> |
| |
| <div class="refs">Spec references: |
| <ul> |
| <li><a href="../annotated-spec/canvas.html#testrefs.2d.imageData.unaffected">2d.imageData.unaffected</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> |
| <p class="output expectedtext">Expected output:<p><img src="../resources/green-100x50.png" class="output expected" id="expected" alt=""> |
| <ul id="d"></ul> |
| <script> |
| _addTest(function(canvas, ctx) { |
| |
| ctx.fillStyle = '#0f0'; |
| ctx.fillRect(0, 0, 50, 50) |
| ctx.fillStyle = '#f00'; |
| ctx.fillRect(50, 0, 50, 50) |
| ctx.save(); |
| ctx.translate(50, 0); |
| ctx.globalAlpha = 0.1; |
| ctx.globalCompositeOperation = 'destination-atop'; |
| ctx.shadowColor = '#f00'; |
| ctx.rect(0, 0, 5, 5); |
| ctx.clip(); |
| var imgdata = ctx.getImageData(0, 0, 50, 50); |
| ctx.restore(); |
| ctx.putImageData(imgdata, 50, 0); |
| _assertPixelApprox(canvas, 25,25, 0,255,0,255, "25,25", "0,255,0,255", 2); |
| _assertPixelApprox(canvas, 75,25, 0,255,0,255, "75,25", "0,255,0,255", 2); |
| |
| |
| }); |
| </script> |
| |
