| <!DOCTYPE html> |
| <html class="reftest-wait"> |
| <link rel="help" href="https://drafts.csswg.org/css-backgrounds-3/#background-color"> |
| <link rel="match" href="background-color-transition-with-delay-ref.html"> |
| <style> |
| .container { |
| width: 100px; |
| height: 100px; |
| background-color: rgb(0, 200, 0); |
| transition: background-color 200000ms steps(2) -99999.9ms; |
| } |
| </style> |
| <script src="/common/reftest-wait.js"></script> |
| <body> |
| <div class="container" id="target"></div> |
| |
| <script> |
| // This test differs from "background-color-transition.html" because it runs the |
| // transition starting from the set background color, rather than using a |
| // delay to start in the middle of the transition. This tests a new codepath |
| // where the first frame of the transition has the original background color, |
| // which is why we need the transition fully running. Since we are using the |
| // step(2) in the animation, so it is enough to wait for two frames and the |
| // animation should be in its mid-point, that's the time we should take |
| // screenshot. |
| function startTransition() { |
| requestAnimationFrame(() => { |
| document.getElementById('target').style.backgroundColor = "rgb(200, 0, 0)"; |
| document.getAnimations()[0].ready.then(() => { |
| requestAnimationFrame(() => { |
| requestAnimationFrame(() => { |
| takeScreenshot(); |
| }); |
| }); |
| }); |
| }); |
| } |
| |
| requestAnimationFrame(startTransition); |
| </script> |
| </body> |
| </html> |