| <!DOCTYPE html> |
| <html> |
| <head> |
| <script src="../../resources/js-test-pre.js"></script> |
| </head> |
| <body> |
| <canvas id="canvas"></canvas> |
| <script> |
| var image = new Image; |
| |
| function drawFrame(expectedFrame) { |
| return new Promise((resolve) => { |
| let canvas = document.getElementById("canvas"); |
| let context = canvas.getContext("2d"); |
| context.drawImage(image, 0, 0, canvas.width, canvas.height); |
| shouldBe("internals.imageFrameIndex(image)", expectedFrame.toString()); |
| setTimeout(() => { |
| resolve(expectedFrame + 1); |
| }, 30); |
| }); |
| } |
| |
| function drawImage(frameCount, expectedFrame) { |
| let promise = drawFrame(expectedFrame); |
| for (let frame = 1; frame < frameCount; ++frame) { |
| promise = promise.then((expectedFrame) => { |
| return drawFrame(expectedFrame); |
| }); |
| } |
| return promise; |
| } |
| |
| function loadImage(src, frameCount) { |
| return new Promise((resolve) => { |
| image.onload = (() => { |
| if (window.internals) |
| internals.setImageFrameDecodingDuration(image, 0.020); |
| drawImage(Math.ceil(frameCount / 2), 0).then(() => { |
| internals.resetImageAnimation(image); |
| debug("The animation of the image was reset."); |
| drawImage(frameCount, 0).then(resolve); |
| }); |
| }); |
| image.src = src; |
| }); |
| } |
| |
| (function() { |
| if (window.internals) |
| internals.clearMemoryCache(); |
| |
| description("Ensure the image animation is played in order after the animation is reset."); |
| jsTestIsAsync = true; |
| |
| loadImage("resources/animated-red-green-blue.gif", 3).then(() => { |
| finishJSTest(); |
| }); |
| })(); |
| </script> |
| <script src="../../resources/js-test-post.js"></script> |
| </body> |
| </html> |
