| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <body> |
| <script> |
| // Ensure correct behavior of canvas with path stroke + shadow after scaling. A blue and red checkered pattern should be displayed. |
| |
| var canvas = document.createElement('canvas'); |
| document.body.appendChild(canvas); |
| canvas.setAttribute('width', '600'); |
| canvas.setAttribute('height', '600'); |
| var ctx = canvas.getContext('2d'); |
| |
| ctx.scale(2, 2); |
| ctx.shadowOffsetX = 100; |
| ctx.shadowOffsetY = 100; |
| ctx.strokeStyle = 'rgba(0, 0, 255, 1)'; |
| ctx.lineWidth = 5; |
| |
| ctx.shadowColor = 'rgba(255, 0, 0, 1.0)'; |
| ctx.beginPath(); |
| ctx.moveTo(50, 50); |
| ctx.lineTo(100, 50); |
| ctx.lineTo(100, 100); |
| ctx.lineTo(50, 100); |
| ctx.lineTo(50, 50); |
| ctx.stroke(); |
| |
| ctx.shadowColor = 'rgba(255, 0, 0, 0.3)'; |
| ctx.beginPath(); |
| ctx.moveTo(50, 150); |
| ctx.lineTo(100, 150); |
| ctx.lineTo(100, 200); |
| ctx.lineTo(50, 200); |
| ctx.lineTo(50, 150); |
| ctx.stroke(); |
| |
| ctx.shadowColor = 'rgba(255, 0, 0, 1.0)'; |
| ctx.shadowBlur = 10; |
| ctx.beginPath(); |
| ctx.moveTo(150, 50); |
| ctx.lineTo(200, 50); |
| ctx.lineTo(200, 100); |
| ctx.lineTo(150, 100); |
| ctx.lineTo(150, 50); |
| ctx.stroke(); |
| |
| ctx.shadowColor = 'rgba(255, 0, 0, 0.6)'; |
| ctx.beginPath(); |
| ctx.moveTo(150, 150); |
| ctx.lineTo(200, 150); |
| ctx.lineTo(200, 200); |
| ctx.lineTo(150, 200); |
| ctx.lineTo(150, 150); |
| ctx.stroke(); |
| |
| 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 testPixelShadowScenarios = [ |
| ['Verify solid shadow 1', 250, 200, [255, 0, 0, 255]], |
| ['Verify solid shadow 2', 300, 290, [255, 0, 0, 255]], |
| ['Verify solid shadow 3', 200, 250, [255, 0, 0, 255]], |
| |
| ['Verify solid alpha shadow 1', 201, 405, [255, 0, 0, 76, 20]], |
| ['Verify solid alpha shadow 2', 201, 500, [255, 0, 0, 76, 20]], |
| ['Verify solid alpha shadow 3', 300, 499, [255, 0, 0, 76, 20]], |
| |
| ['Verify blurry shadow 1', 398, 210, [255, 0, 0, 200, 20]], |
| ['Verify blurry shadow 2', 508, 250, [255, 0, 0, 49, 20]], |
| ['Verify blurry shadow 3', 450, 198, [255, 0, 0, 178, 20]], |
| |
| ['Verify blurry alpha shadow 1', 505, 450, [255, 0, 0, 70, 20]], |
| ['Verify blurry alpha shadow 2', 450, 405, [255, 0, 0, 70, 20]], |
| ]; |
| |
| generate_tests(testPixelShadowBlur, testPixelShadowScenarios); |
| |
| </script> |
| </body> |
