| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <body> |
| <script> |
| |
| var rgbApprox = 70, alphaApprox = 0, alphaMax = 0; |
| function testPixelShadow(pixel, reference) { |
| for(i = 0; i < 3; i++){ |
| if(pixel[3] != 0) pixel[i] = pixel[i] * 255 / pixel[3]; |
| assert_approx_equals(pixel[i], reference[i], rgbApprox); |
| } |
| if(alphaMax != 0) |
| assert_true(pixel[3] < alphaMax); |
| else |
| assert_approx_equals(pixel[3], reference[3], alphaApprox); |
| } |
| |
| var canvas = document.createElement('canvas'); |
| document.body.appendChild(canvas); |
| canvas.setAttribute('width', '400'); |
| canvas.setAttribute('height', '650'); |
| var ctx = canvas.getContext('2d'); |
| |
| var gradient = ctx.createLinearGradient(0, 0, 100, 100); |
| gradient.addColorStop(0, 'rgba(0, 0, 255, 1.0)'); |
| gradient.addColorStop(1, 'rgba(0, 0, 255, 1.0)'); |
| |
| ctx.shadowOffsetX = 200; |
| ctx.fillStyle = gradient; |
| |
| ctx.shadowColor = 'rgba(255, 0, 0, 1.0)'; |
| ctx.fillRect(50, 50, 100, 100); |
| |
| ctx.shadowColor = 'rgba(255, 0, 0, 0.3)'; |
| ctx.fillRect(50, 200, 100, 100); |
| |
| ctx.shadowColor = 'rgba(255, 0, 0, 1.0)'; |
| ctx.shadowBlur = 5; |
| ctx.fillRect(50, 350, 100, 100); |
| |
| ctx.shadowColor = 'rgba(255, 0, 0, 0.3)'; |
| ctx.fillRect(50, 500, 100, 100); |
| |
| // rgbApprox = 1 |
| testSolidShadow = |
| [ |
| ['testSolidShadow 1', ctx.getImageData(250, 50, 1, 1).data, [255, 0, 0, 255]], |
| ['testSolidShadow 2', ctx.getImageData(250, 149, 1, 1).data, [255, 0, 0, 255]], |
| ['testSolidShadow 3', ctx.getImageData(349, 50, 1, 1).data, [255, 0, 0, 255]], |
| ['testSolidShadow 4', ctx.getImageData(349, 149, 1, 1).data, [255, 0, 0, 255]], |
| ]; |
| |
| // rgbApprox = 3, alphaApprox = 5 |
| testSolidAlphaShadow = |
| [ |
| ['testSolidAlphaShadow 1', ctx.getImageData(250, 200, 1, 1).data, [255, 0, 0, 76]], |
| ['testSolidAlphaShadow 2', ctx.getImageData(250, 299, 1, 1).data, [255, 0, 0, 76]], |
| ['testSolidAlphaShadow 3', ctx.getImageData(349, 200, 1, 1).data, [255, 0, 0, 76]], |
| ['testSolidAlphaShadow 4', ctx.getImageData(349, 299, 1, 1).data, [255, 0, 0, 76]], |
| ]; |
| |
| // alpha < 25 |
| testBlurryShadow = |
| [ |
| ['testBlurryShadow 1', ctx.getImageData(248, 347, 1, 1).data, [255, 0, 0, 0]], |
| ['testBlurryShadow 2', ctx.getImageData(248, 452, 1, 1).data, [255, 0, 0, 0]], |
| ['testBlurryShadow 3', ctx.getImageData(351, 347, 1, 1).data, [255, 0, 0, 0]], |
| ['testBlurryShadow 4', ctx.getImageData(351, 452, 1, 1).data, [255, 0, 0, 0]], |
| ]; |
| |
| // alpha < 10 |
| testBlurryAlphaShadow = |
| [ |
| ['testBlurryAlphaShadow 1', ctx.getImageData(248, 497, 1, 1).data, [255, 0, 0, 0]], |
| ['testBlurryAlphaShadow 2', ctx.getImageData(248, 602, 1, 1).data, [255, 0, 0, 0]], |
| ['testBlurryAlphaShadow 3', ctx.getImageData(351, 497, 1, 1).data, [255, 0, 0, 0]], |
| ['testBlurryAlphaShadow 4', ctx.getImageData(351, 602, 1, 1).data, [255, 0, 0, 0]], |
| ]; |
| |
| rgbApprox = 1; |
| generate_tests(testPixelShadow, testSolidShadow); |
| |
| rgbApprox = 3; |
| alphaApprox = 5; |
| generate_tests(testPixelShadow, testSolidAlphaShadow); |
| |
| rgbApprox = 10; |
| alphaMax = 25; |
| generate_tests(testPixelShadow, testBlurryShadow); |
| |
| alphaMax = 10; |
| generate_tests(testPixelShadow, testBlurryAlphaShadow); |
| |
| </script> |
| </body> |
