| <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> |
| <html> |
| <head> |
| <script src="../../resources/js-test-pre.js"></script> |
| </head> |
| <body> |
| <script> |
| description("Test for chromium's canvas bug where fillText resets the current context https://bugs.webkit.org/show_bug.cgi?id=26436 . You must see green box with message 'This text should be seen', and black box below the green box.") |
| |
| function pixelValueAt(context, x, y) { |
| var imageData = context.getImageData(x, y, 1, 1); |
| return imageData.data; |
| } |
| |
| function pixelToString(p) { |
| return "[" + p[0] + ", " + p[1] + ", " + p[2] + ", " + p[3] + "]" |
| } |
| |
| function pixelShouldBe(context, x, y, expectedPixelString) { |
| var pixel = pixelValueAt(context, x, y); |
| var expectedPixel = eval(expectedPixelString); |
| |
| var pixelString = "pixel " + x + ", " + y; |
| if (areArraysEqual(pixel, expectedPixel)) { |
| testPassed(pixelString + " is " + pixelToString(pixel)); |
| } else { |
| testFailed(pixelString + " should be " + pixelToString(expectedPixel) + " was " + pixelToString(pixel)); |
| } |
| } |
| |
| var canvas = document.createElement("canvas"); |
| canvas.height = 100; |
| canvas.width = 500; |
| canvas.style.height = "100"; |
| canvas.style.width = "500"; |
| |
| document.body.appendChild(canvas); |
| |
| var ctx = canvas.getContext('2d'); |
| ctx.fillStyle = 'rgb(0,255,0)'; |
| ctx.fillRect(0, 0, 500, 100); |
| ctx.fillStyle = 'rgb(0,0,0)'; |
| ctx.fillText("This text should be seen", 20, 20); |
| ctx.translate(0, 50); |
| ctx.font = "10pt Arial"; |
| ctx.fillText("This text should NOT be seen", 20, 20); |
| // If fillText resets the current context, this rectangle won't hide the text. |
| ctx.fillStyle = 'rgb(0,0,0)'; |
| ctx.fillRect(0, 0, 500, 50); |
| |
| pixelShouldBe(ctx, 0, 0, "[0,255,0,255]"); |
| </script> |
| <script src="../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
