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| 1 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> | 1 <script src="../../resources/testharness.js"></script> |
| 2 <html> | 2 <script src="../../resources/testharnessreport.js"></script> |
| 3 <head> | |
| 4 <script src="../../resources/js-test.js"></script> | |
| 5 </head> | |
| 6 <body> | 3 <body> |
| 7 <script src="script-tests/canvas-strokePath-alpha-shadow.js"></script> | 4 <script> |
| 5 |
| 6 // Ensure correct behavior of canvas with path stroke using a strokeStyle color
with alpha and a shadow. |
| 7 |
| 8 var canvas = document.createElement('canvas'); |
| 9 document.body.appendChild(canvas); |
| 10 canvas.setAttribute('width', '600'); |
| 11 canvas.setAttribute('height', '1100'); |
| 12 var ctx = canvas.getContext('2d'); |
| 13 |
| 14 ctx.save(); |
| 15 ctx.strokeStyle = 'rgba(0, 0, 255, 0.5)'; |
| 16 ctx.shadowColor = 'rgba(255, 0, 0, 0.5)'; |
| 17 ctx.shadowOffsetX = 250; |
| 18 ctx.lineWidth = 50; |
| 19 |
| 20 function strokePath(x, y) { |
| 21 ctx.beginPath(); |
| 22 ctx.arc(x, y, 75, 0, Math.PI*2, true); |
| 23 ctx.stroke(); |
| 24 } |
| 25 |
| 26 // Alpha shadow. |
| 27 ctx.shadowBlur = 0; |
| 28 strokePath(150, 150); |
| 29 |
| 30 // Blurry shadow. |
| 31 ctx.shadowBlur = 10; |
| 32 strokePath(150, 400); |
| 33 |
| 34 ctx.rotate(Math.PI/2); |
| 35 |
| 36 // Rotated alpha shadow. |
| 37 ctx.shadowBlur = 0; |
| 38 strokePath(650, -150); |
| 39 |
| 40 // Rotated blurry shadow. |
| 41 ctx.shadowBlur = 10; |
| 42 strokePath(900, -150); |
| 43 |
| 44 ctx.restore(); |
| 45 |
| 46 var imageData, data; |
| 47 ctx.fillStyle = 'black'; |
| 48 |
| 49 function testPixelAlphaShadow(x, y, color) |
| 50 { |
| 51 if (color.length == 4) { |
| 52 assert_array_equals(ctx.getImageData(x, y, 1, 1).data, color); |
| 53 } else { // we expect to have [r, g, b, a, alphaTolerance] |
| 54 var data = ctx.getImageData(x, y, 1, 1).data; |
| 55 assert_array_equals(data.slice(0,3), color.slice(0,3)); |
| 56 assert_approx_equals(data[3], color[3], color[4]); |
| 57 } |
| 58 // Plot test point. |
| 59 ctx.fillRect(x, y, 3, 3); |
| 60 } |
| 61 |
| 62 var alphaTolerance = 15; |
| 63 var testPixelAlphaShadowScenarios = [ |
| 64 ['Verify alpha shadow 1', 400, 150, [0, 0, 0, 0]], |
| 65 ['Verify alpha shadow 2', 400, 75, [255, 0, 0, 64, alphaTolerance]], |
| 66 ['Verify alpha shadow 3', 400, 225, [255, 0, 0, 64, alphaTolerance]], |
| 67 ['Verify alpha shadow 4', 325, 150, [255, 0, 0, 64, alphaTolerance]], |
| 68 ['Verify alpha shadow 5', 475, 150, [255, 0, 0, 64, alphaTolerance]], |
| 69 |
| 70 ['Verify blurry shadow 1', 400, 400, [0, 0, 0, 0]], |
| 71 ['Verify blurry shadow 2', 400, 300, [255, 0, 0, 31, alphaTolerance]], |
| 72 ['Verify blurry shadow 3', 400, 500, [255, 0, 0, 31, alphaTolerance]], |
| 73 ['Verify blurry shadow 4', 300, 400, [255, 0, 0, 31, alphaTolerance]], |
| 74 ['Verify blurry shadow 5', 500, 400, [255, 0, 0, 31, alphaTolerance]], |
| 75 |
| 76 ['Verify rotated alpha shadow 1', 400, 650, [0, 0, 0, 0]], |
| 77 ['Verify rotated alpha shadow 2', 400, 575, [255, 0, 0, 64, alphaTolerance]]
, |
| 78 ['Verify rotated alpha shadow 3', 400, 725, [255, 0, 0, 64, alphaTolerance]]
, |
| 79 ['Verify rotated alpha shadow 4', 325, 650, [255, 0, 0, 64, alphaTolerance]]
, |
| 80 ['Verify rotated alpha shadow 5', 475, 650, [255, 0, 0, 64, alphaTolerance]]
, |
| 81 |
| 82 ['Verify rotated blurry shadow 1', 400, 900, [0, 0, 0, 0]], |
| 83 ['Verify rotated blurry shadow 2', 400, 800, [255, 0, 0, 31, alphaTolerance]
], |
| 84 ['Verify rotated blurry shadow 3', 400, 1000, [255, 0, 0, 31, alphaTolerance
]], |
| 85 ['Verify rotated blurry shadow 2', 300, 900, [255, 0, 0, 31, alphaTolerance]
], |
| 86 ['Verify rotated blurry shadow 2', 500, 900, [255, 0, 0, 31, alphaTolerance]
], |
| 87 |
| 88 ]; |
| 89 |
| 90 generate_tests(testPixelAlphaShadow, testPixelAlphaShadowScenarios); |
| 91 |
| 92 </script> |
| 8 </body> | 93 </body> |
| 9 </html> | |
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