| <!DOCTYPE html> |
| <!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> |
| <title>Canvas test: toDataURL.jpeg.quality.basic</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.quality.basic</h1> |
| <p class="desc">toDataURL with JPEG uses the quality parameter</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.quality.basic.png" class="output expected" id="expected" alt=""> |
| <ul id="d"></ul> |
| <script> |
| var t = async_test("toDataURL with JPEG uses the quality parameter"); |
| _addTest(function(canvas, ctx) { |
| |
| ctx.fillStyle = '#00f'; |
| ctx.fillRect(0, 0, 100, 50); |
| ctx.fillStyle = '#0ff'; |
| ctx.fillRect(0, 3, 100, 1); |
| // Check for JPEG support first |
| var data = canvas.toDataURL('image/jpeg'); |
| if (!data.match(/^data:image\/jpeg[;,]/)) { |
| _assert(true, "true"); |
| } else { |
| var data_hi = canvas.toDataURL('image/jpeg', 0.99); |
| var data_lo = canvas.toDataURL('image/jpeg', 0.01); |
| ctx.fillStyle = '#f00'; |
| ctx.fillRect(0, 0, 100, 50); |
| deferTest(); |
| var img_hi = new Image(); |
| img_hi.onload = function () |
| { |
| var img_lo = new Image(); |
| img_lo.onload = t.step_func_done(function () |
| { |
| ctx.drawImage(img_hi, 0, 0, 50, 50, 0, 0, 50, 50); |
| ctx.drawImage(img_lo, 0, 0, 50, 50, 50, 0, 50, 50); |
| _assert(data_hi.length > data_lo.length, "data_hi.length > data_lo.length"); |
| _assertPixelApprox(canvas, 25,25, 0,0,255,255, "25,25", "0,0,255,255", 8); |
| _assertPixelApprox(canvas, 75,25, 0,0,255,255, "75,25", "0,0,255,255", 32); |
| }); |
| img_lo.src = data_lo; |
| }; |
| img_hi.src = data_hi; |
| } |
| |
| |
| }); |
| </script> |
| |
