| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <body> |
| <script> |
| // Ensure correct behavior of canvas with strokeRect using a gradient strokeStyle and a shadow. |
| |
| var canvas = document.createElement('canvas'); |
| document.body.appendChild(canvas); |
| canvas.setAttribute('width', '600'); |
| canvas.setAttribute('height', '1100'); |
| var ctx = canvas.getContext('2d'); |
| |
| var gradient = ctx.createLinearGradient(0, 0, 300, 0); |
| gradient.addColorStop(0, 'rgba(0, 0, 255, 0.5)'); |
| gradient.addColorStop(1, 'rgba(0, 0, 255, 0.5)'); |
| |
| ctx.save(); |
| ctx.strokeStyle = gradient; |
| ctx.shadowColor = 'rgba(255, 0, 0, 0.5)'; |
| ctx.shadowOffsetX = 250; |
| ctx.lineWidth = 25; |
| |
| var side = 200; |
| |
| // Alpha shadow. |
| ctx.shadowBlur = 0; |
| ctx.strokeRect(50, 50, side, side); |
| |
| // Blurry shadow. |
| ctx.shadowBlur = 10; |
| ctx.strokeRect(50, 300, side, side); |
| |
| ctx.rotate(Math.PI / 2); |
| |
| // Rotated alpha shadow. |
| ctx.shadowBlur = 0; |
| ctx.strokeRect(550, -250, side, side); |
| |
| // Rotated blurry shadow. |
| ctx.shadowBlur = 10; |
| ctx.strokeRect(800, -250, side, side); |
| |
| ctx.restore(); |
| |
| var imageData, data; |
| ctx.fillStyle = 'black'; |
| |
| function testPixelAlphaShadow(x, y, color, rgbTolerance) |
| { |
| var data = ctx.getImageData(x, y, 1, 1).data; |
| for (i = 0; i < 3; i++) |
| assert_approx_equals(data[i]*data[3]/255, color[i]*color[3]/255, rgbTolerance); |
| |
| // Plot test point. |
| ctx.fillRect(x, y, 3, 3); |
| } |
| |
| var rgbTolerance = 4; |
| var testScenarios = [ |
| ['Verify alpha shadow 1' , 400, 150, [0, 0, 0, 0], 0], |
| ['Verify alpha shadow 2' , 400, 75, [0, 0, 0, 0], 0], |
| ['Verify alpha shadow 3' , 400, 225, [0, 0, 0, 0], 0], |
| ['Verify alpha shadow 4' , 325, 150, [0, 0, 0, 0], 0], |
| ['Verify alpha shadow 5' , 475, 150, [0, 0, 0, 0], 0], |
| ['Verify alpha shadow 6' , 400, 50, [255, 0, 0, 64], rgbTolerance], |
| ['Verify alpha shadow 7' , 500, 150, [255, 0, 0, 64], rgbTolerance], |
| ['Verify alpha shadow 8' , 400, 250, [255, 0, 0, 64], rgbTolerance], |
| ['Verify alpha shadow 9' , 300, 150, [255, 0, 0, 64], rgbTolerance], |
| ['Verify alpha shadow 10' , 400, 25, [0, 0, 0, 0], 0], |
| ['Verify alpha shadow 11' , 525, 150, [0, 0, 0, 0], 0], |
| ['Verify alpha shadow 12' , 400, 275, [0, 0, 0, 0], rgbTolerance], |
| ['Verify alpha shadow 13' , 275, 150, [0, 0, 0, 0], rgbTolerance], |
| |
| ['Verify blurry shadow 1' , 400, 400, [0, 0, 0, 0], 0], |
| ['Verify blurry shadow 2' , 400, 325, [0, 0, 0, 0], rgbTolerance], |
| ['Verify blurry shadow 3' , 475, 400, [0, 0, 0, 0], rgbTolerance], |
| ['Verify blurry shadow 4' , 400, 475, [0, 0, 0, 0], rgbTolerance], |
| ['Verify blurry shadow 5' , 325, 400, [0, 0, 0, 0], rgbTolerance], |
| ['Verify blurry shadow 6' , 400, 300, [255, 0, 0, 64], rgbTolerance], |
| ['Verify blurry shadow 7' , 400, 500, [255, 0, 0, 64], rgbTolerance], |
| ['Verify blurry shadow 8' , 300, 400, [255, 0, 0, 64], rgbTolerance], |
| ['Verify blurry shadow 9' , 500, 400, [255, 0, 0, 64], rgbTolerance], |
| ['Verify blurry shadow 10' , 525, 400, [0, 0, 0, 0], rgbTolerance], |
| ['Verify blurry shadow 11' , 275, 400, [0, 0, 0, 0], rgbTolerance], |
| |
| ['Verify rotated alpha shadow 1' , 400, 650, [0, 0, 0, 0], 0], |
| ['Verify rotated alpha shadow 2' , 400, 575, [0, 0, 0, 0], 0], |
| ['Verify rotated alpha shadow 3' , 400, 725, [0, 0, 0, 0], 0], |
| ['Verify rotated alpha shadow 4' , 325, 650, [0, 0, 0, 0], 0], |
| ['Verify rotated alpha shadow 5' , 475, 650, [0, 0, 0, 0], 0], |
| ['Verify rotated alpha shadow 6' , 400, 550, [255, 0, 0, 64], rgbTolerance], |
| ['Verify rotated alpha shadow 7' , 500, 650, [255, 0, 0, 64], rgbTolerance], |
| ['Verify rotated alpha shadow 8' , 400, 750, [255, 0, 0, 64], rgbTolerance], |
| ['Verify rotated alpha shadow 9' , 300, 650, [255, 0, 0, 64], rgbTolerance], |
| ['Verify rotated alpha shadow 10' , 400, 525, [0, 0, 0, 0], rgbTolerance], |
| ['Verify rotated alpha shadow 11' , 525, 650, [0, 0, 0, 0], 0], |
| ['Verify rotated alpha shadow 12' , 400, 775, [0, 0, 0, 0], rgbTolerance], |
| ['Verify rotated alpha shadow 13' , 275, 650, [0, 0, 0, 0], 0], |
| |
| ['Verify rotated blurry shadow 1' , 400, 900, [0, 0, 0, 0], 0], |
| ['Verify rotated blurry shadow 2' , 400, 825, [0, 0, 0, 0], rgbTolerance], |
| ['Verify rotated blurry shadow 3' , 475, 900, [0, 0, 0, 0], rgbTolerance], |
| ['Verify rotated blurry shadow 4' , 400, 975, [0, 0, 0, 0], rgbTolerance], |
| ['Verify rotated blurry shadow 5' , 325, 900, [0, 0, 0, 0], rgbTolerance], |
| ['Verify rotated blurry shadow 6' , 400, 800, [255, 0, 0, 64], rgbTolerance], |
| ['Verify rotated blurry shadow 7' , 400, 1000, [255, 0, 0, 64], rgbTolerance], |
| ['Verify rotated blurry shadow 8' , 300, 900, [255, 0, 0, 64], rgbTolerance], |
| ['Verify rotated blurry shadow 9' , 500, 900, [255, 0, 0, 64], rgbTolerance], |
| ['Verify rotated blurry shadow 10' , 525, 900, [0, 0, 0, 0], rgbTolerance], |
| ['Verify rotated blurry shadow 11' , 275, 900, [0, 0, 0, 0], rgbTolerance], |
| ['Verify rotated blurry shadow 12' , 400, 1025, [0, 0, 0, 0], rgbTolerance], |
| ]; |
| |
| generate_tests(testPixelAlphaShadow, testScenarios); |
| |
| </script> |
| </body> |
