| <!DOCTYPE html> |
| <title>Canvas test: toDataURL.png.complexcolours</title> |
| <script src="../tests.js"></script> |
| <link rel="stylesheet" href="../tests.css"> |
| <body> |
| <p id="passtext">Pass</p> |
| <p id="failtext">Fail</p> |
| <p class="output">These images should be identical:</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.png.complexcolours.png" class="output expected" id="expected" alt=""> |
| <ul id="d"></ul> |
| <script> |
| _addTest(function(canvas, ctx) { |
| |
| // (These values are chosen to survive relatively alright through being premultiplied) |
| ctx.fillStyle = 'rgba(1, 3, 254, 1)'; |
| ctx.fillRect(0, 0, 25, 25); |
| ctx.fillStyle = 'rgba(8, 252, 248, 0.75)'; |
| ctx.fillRect(25, 0, 25, 25); |
| ctx.fillStyle = 'rgba(6, 10, 250, 0.502)'; |
| ctx.fillRect(50, 0, 25, 25); |
| ctx.fillStyle = 'rgba(12, 16, 244, 0.25)'; |
| ctx.fillRect(75, 0, 25, 25); |
| var img = new Image(); |
| deferTest(); |
| img.onload = wrapFunction(function () |
| { |
| ctx.drawImage(img, 0, 25); |
| // (The alpha values do not really survive float->int conversion, so just |
| // do approximate comparisons) |
| |
| _assertPixel(canvas, 12,40, 1,3,254,255, "12,40", "1,3,254,255"); |
| _assertPixelApprox(canvas, 37,40, 8,252,248,191, "37,40", "8,252,248,191", 2); |
| _assertPixelApprox(canvas, 62,40, 6,10,250,127, "62,40", "6,10,250,127", 4); |
| _assertPixelApprox(canvas, 87,40, 12,16,244,63, "87,40", "12,16,244,63", 8); |
| }); |
| img.src = canvas.toDataURL(); |
| |
| |
| }); |
| </script> |
| |
