| <!DOCTYPE html> |
| <!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> |
| <title>Canvas test: toDataURL.jpeg.alpha</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/html/canvas/resources/canvas-tests.js"></script> |
| <link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css"> |
| <body class="show_output"> |
| |
| <h1>toDataURL.jpeg.alpha</h1> |
| <p class="desc">toDataURL with JPEG composites onto black</p> |
| |
| |
| <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="toDataURL.jpeg.alpha.png" class="output expected" id="expected" alt=""> |
| <ul id="d"></ul> |
| <script> |
| var t = async_test("toDataURL with JPEG composites onto black"); |
| _addTest(function(canvas, ctx) { |
| |
| ctx.fillStyle = 'rgba(128, 255, 128, 0.5)'; |
| ctx.fillRect(0, 0, 100, 50); |
| ctx.globalCompositeOperation = 'destination-over'; // should be ignored by toDataURL |
| var data = canvas.toDataURL('image/jpeg'); |
| ctx.globalCompositeOperation = 'source-over'; |
| if (!data.match(/^data:image\/jpeg[;,]/)) { |
| _assert(true, "true"); |
| } else { |
| ctx.fillStyle = '#f00'; |
| ctx.fillRect(0, 0, 100, 50); |
| var img = new Image(); |
| deferTest(); |
| img.onload = t.step_func_done(function () |
| { |
| ctx.drawImage(img, 0, 0); |
| _assertPixelApprox(canvas, 50,25, 63,127,63,255, "50,25", "63,127,63,255", 8); |
| }); |
| img.src = data; |
| } |
| |
| |
| }); |
| </script> |
| |
