| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <body> |
| <script> |
| // Create auxiliary canvas to draw to and create an image from. |
| // This is done instead of simply loading an image from the file system |
| // because that would throw a SECURITY_ERR DOM Exception. |
| var aCanvas = document.createElement('canvas'); |
| aCanvas.setAttribute('width', '200'); |
| aCanvas.setAttribute('height', '200'); |
| var aCtx = aCanvas.getContext('2d'); |
| |
| // Draw a circle on the same canvas. |
| aCtx.beginPath(); |
| aCtx.fillStyle = 'green'; |
| aCtx.arc(100, 100, 150, 0, -Math.PI/2, false); |
| aCtx.fill(); |
| |
| // Create the image object to be drawn on the master canvas. |
| var img = new Image(); |
| img.src = aCanvas.toDataURL(); // set a data URI of the base64 enconded image as the source |
| |
| // Create master canvas. |
| var canvas = document.createElement('canvas'); |
| document.body.appendChild(canvas); |
| canvas.setAttribute('width', '600'); |
| canvas.setAttribute('height', '600'); |
| var ctx = canvas.getContext('2d'); |
| |
| var testScenarios = [ |
| ['Test solid shadow 1', 260, 300, [0, 0, 0, 0]], |
| ['Test solid shadow 2', 350, 100, [240, 50, 50, 255]], |
| ['Test solid shadow 3', 400, 200, [240, 50, 50, 255]], |
| ['Test solid shadow 4', 490, 65, [0, 0, 0, 0]], |
| ['Test solid shadow 5', 485, 65, [0, 0, 0, 0]], |
| |
| ['Test blurry shadow 1', 260, 400, [0, 0, 0, 0]], |
| ['Test blurry shadow 2', 350, 300, [0, 0, 255, 'neq', 255]], |
| ['Test blurry shadow 3', 300, 400, [0, 0, 255, 'neq', 255]], |
| ['Test blurry shadow 4', 300, 500, [0, 0, 255, 'neq', 255]], |
| ['Test blurry shadow 5', 400, 500, [0, 0, 255, 'neq', 255]], |
| ['Test blurry shadow 6', 400, 400, [0, 0, 255]], |
| ['Test blurry shadow 7', 490, 315, [0, 0, 0, 0]], |
| ['Test blurry shadow 8', 485, 320, [0, 0, 0, 0]], |
| ]; |
| |
| function runTestScenario(x, y, expectedColor) |
| { |
| imageData = ctx.getImageData(x, y, 1, 1).data; |
| if (expectedColor.length == 5) { |
| assert_array_equals(imageData.slice(0,3), expectedColor.slice(0,3)); |
| assert_not_equals(imageData[3], expectedColor[4]); |
| } else { |
| assert_array_equals(imageData.slice(0, expectedColor.length), expectedColor); |
| } |
| } |
| |
| function drawImageToCanvasAndCheckPixels() { |
| ctx.shadowOffsetX = 250; |
| ctx.shadowColor = 'rgba(240, 50, 50, 1.0)'; |
| ctx.drawImage(img, 50, 50); |
| |
| ctx.shadowOffsetX = 250; |
| ctx.shadowBlur = 6; |
| ctx.shadowColor = 'rgba(50, 50, 200, 0.9)'; |
| ctx.shadowColor = 'rgba(0, 0, 255, 1.0)'; |
| ctx.drawImage(img, 50, 300); |
| |
| for (var i = 0; i < testScenarios.length; i++) |
| runTestScenario(testScenarios[i][1], |
| testScenarios[i][2], |
| testScenarios[i][3]);} |
| |
| async_test(t => { |
| img.onload = function() { |
| t.step(drawImageToCanvasAndCheckPixels); |
| t.done(); |
| } |
| }, "Ensure correct behavior of canvas with image shadow. A square with a cut-out top-right corner should be displayed with solid shadow (top) and blur shadow (bottom)."); |
| </script> |
| </body> |
