| <!DOCTYPE html> |
| <html id="top"> |
| <meta charset="utf-8"> |
| <title>View timeline delay</title> |
| <link rel="help" href="https://drafts.csswg.org/scroll-animations-1/#viewtimeline-interface"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/web-animations/testcommon.js"></script> |
| <script src="/scroll-animations/scroll-timelines/testcommon.js"></script> |
| <script src="/scroll-animations/view-timelines/testcommon.js"></script> |
| <style> |
| #container { |
| overflow-x: scroll; |
| height: 200px; |
| width: 200px; |
| } |
| #content { |
| translate: 50px; |
| width: 1800px; |
| margin: 0; |
| } |
| .spacer { |
| width: 800px; |
| display: inline-block; |
| } |
| #target { |
| background-color: green; |
| height: 100px; |
| width: 100px; |
| display: inline-block; |
| font-size: 10px; |
| } |
| </style> |
| <body> |
| <div id="container"> |
| <div id="content"> |
| <div class="spacer"></div> |
| <div id="target"></div> |
| <div class="spacer"></div> |
| </div> |
| </div> |
| </body> |
| <script type="text/javascript"> |
| promise_test(async t => { |
| const timeline = new ViewTimeline({ |
| subject: target, |
| axis: "inline" |
| }); |
| const anim = target.animate({ backgroundColor: ['green', 'red' ] }, |
| { timeline: timeline }); |
| await new Promise(requestAnimationFrame); |
| assert_px_equals(timeline.startOffset, 604, 'startOffset'); |
| assert_px_equals(timeline.endOffset, 904, 'endOffset'); |
| }); |
| </script> |
