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|---|
| 1 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> | 1 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> |
| 2 <html> | 2 <title>Test that we can render a CMYK JPEG without color corruption.</title> |
| 3 <head> | 3 <script src="../../resources/testharness.js"></script> |
| 4 <script src="../../resources/js-test.js"></script> | 4 <script src="../../resources/testharnessreport.js"></script> |
| 5 </head> | 5 <script type="text/javascript"> |
| 6 <body> | 6 async_test(function(t) { |
| 7 <script src="script-tests/cmyk-jpeg-with-color-profile.js"></script> | 7 // The colors used for verifying the test results. |
| 8 </body> | 8 var red = 0, green = 0, blue = 0, alpha = 0; |
| 9 </html> | 9 // Create a canvas element. This element is used for pasting a CMYK JPEG and |
| 10 // reading its pixels. |
| 11 var canvas = document.createElement("canvas"); |
| 12 canvas.width = 64; |
| 13 canvas.height = 64; |
| 14 // Create an image object and load a CMYK JPEG. |
| 15 var image = new Image(); |
| 16 image.onload = t.step_func_done(function() { |
| 17 // Paste the loaded JPEG ('resources/cmyk-jpeg.jpg') to the canvas. |
| 18 var context = canvas.getContext("2d"); |
| 19 context.drawImage(image, 0, 0); |
| 20 |
| 21 // Read the pixels in the canvas and calculate their average values. |
| 22 // (DumpRenderTree always allows to read them.) |
| 23 var data = context.getImageData(0, 0, canvas.width, canvas.height); |
| 24 var pixels = canvas.width * canvas.height; |
| 25 for (var i = 0; i < pixels * 4; i += 4) { |
| 26 red += data.data[i + 0]; |
| 27 green += data.data[i + 1]; |
| 28 blue += data.data[i + 2]; |
| 29 alpha += data.data[i + 3]; |
| 30 } |
| 31 red /= pixels; |
| 32 green /= pixels; |
| 33 blue /= pixels; |
| 34 alpha /= pixels; |
| 35 |
| 36 // Even though the output colors depend on color-profiles (i.e. they dep
end |
| 37 // on devices), green must be the most prominent color because the sourc
e |
| 38 // image only consists of green. So, we test it. |
| 39 assert_greater_than(green, red); |
| 40 assert_greater_than(green, blue); |
| 41 }); |
| 42 image.src = "resources/cmyk-jpeg.jpg"; |
| 43 }); |
| 44 </script> |
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Chromium Code Reviews
Issue 2228333003:
Use testharness.js in fast/images/ for border/cmyk tests (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master