| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <body> |
| <script> |
| // Ensure that canvas shadowBlur is not affected by transformations. |
| |
| var canvas = document.createElement('canvas'); |
| document.body.appendChild(canvas); |
| canvas.setAttribute('width', '600'); |
| canvas.setAttribute('height', '600'); |
| var ctx = canvas.getContext('2d'); |
| |
| ctx.shadowBlur = 25; |
| ctx.shadowOffsetX = 100; |
| ctx.shadowOffsetY = 100; |
| ctx.fillStyle = 'rgba(0, 0, 255, 1)'; |
| |
| // top left |
| ctx.shadowColor = 'rgba(255, 0, 0, 1.0)'; |
| ctx.scale(4, 4); |
| ctx.rotate(Math.PI/2); |
| ctx.translate(25, -50); |
| ctx.fillRect(0, 0, 25, 25); |
| |
| // bottom left |
| ctx.shadowColor = 'rgba(255, 0, 0, 0.5)'; |
| ctx.setTransform(1, 0, 0, 1, 0, 0); |
| ctx.scale(0.5, 0.5); |
| ctx.fillRect(200, 600, 200, 200); |
| |
| // top right |
| ctx.shadowColor = 'rgba(255, 0, 0, 1.0)'; |
| ctx.scale(2, 2); |
| ctx.fillRect(300, 100, 100, 100); |
| |
| // bottom right |
| ctx.shadowColor = 'rgba(255, 0, 0, 0.5)'; |
| ctx.fillRect(300, 300, 100, 100); |
| |
| function testPixelShadowBlur(x, y, color) |
| { |
| if (color.length == 4) { |
| assert_array_equals(ctx.getImageData(x, y, 1, 1).data, color); |
| } else { // we expect to have [r, g, b, a, alphaApprox] |
| var data = ctx.getImageData(x, y, 1, 1).data; |
| assert_array_equals(data.slice(0,3), color.slice(0,3)); |
| assert_approx_equals(data[3], color[3], color[4]); |
| } |
| } |
| |
| var testPixelShadowBlurScenarios = [ |
| ['Verify top left 1', 250, 250, [255, 0, 0, 255]], |
| ['Verify top left 2', 250, 160, [0, 0, 0, 0]], |
| ['Verify top left 3', 250, 340, [0, 0, 0, 0]], |
| ['Verify top left 4', 160, 250, [0, 0, 0, 0]], |
| ['Verify top left 5', 340, 250, [0, 0, 0, 0]], |
| |
| ['Verify bottom left 1', 250, 450, [255, 0, 0, 126, 20]], |
| ['Verify bottom left 2', 250, 360, [0, 0, 0, 0]], |
| ['Verify bottom left 3', 250, 540, [0, 0, 0, 0]], |
| ['Verify bottom left 4', 160, 450, [0, 0, 0, 0]], |
| ['Verify bottom left 5', 340, 450, [0, 0, 0, 0]], |
| ['Verify bottom left 6', 250, 250, [255, 0, 0, 255, 20]], |
| |
| ['Verify top right 1', 450, 250, [255, 0, 0, 255, 20]], |
| ['Verify top right 2', 450, 160, [0, 0, 0, 0]], |
| ['Verify top right 3', 450, 340, [0, 0, 0, 0]], |
| ['Verify top right 4', 360, 250, [0, 0, 0, 0]], |
| ['Verify top right 5', 540, 250, [0, 0, 0, 0]], |
| |
| ['Verify bottom right 1', 450, 450, [255, 0, 0, 126, 20]], |
| ['Verify bottom right 2', 450, 360, [0, 0, 0, 0]], |
| ['Verify bottom right 3', 450, 540, [0, 0, 0, 0]], |
| ['Verify bottom right 4', 360, 450, [0, 0, 0, 0]], |
| ['Verify bottom right 5', 540, 450, [0, 0, 0, 0]], |
| ]; |
| |
| generate_tests(testPixelShadowBlur, testPixelShadowBlurScenarios); |
| |
| </script> |
| </body> |
