| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>View timeline on element with display:none</title> |
| <link rel="help" href="https://drafts.csswg.org/scroll-animations-1/#scroll-timelines"> |
| <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> |
| <script src="/css/css-typed-om/resources/testhelper.js"></script> |
| |
| <style> |
| #container { |
| border: 10px solid lightgray; |
| overflow-x: scroll; |
| height: 200px; |
| width: 200px; |
| } |
| #content { |
| display: flex; |
| flex-flow: row nowrap; |
| justify-content: flex-start; |
| width: 1800px; |
| margin: 0; |
| } |
| .spacer { |
| width: 800px; |
| display: inline-block; |
| } |
| #target { |
| background-color: green; |
| height: 100px; |
| width: 100px; |
| display: none; |
| } |
| </style> |
| |
| <div id="container"> |
| <div id="content"> |
| <div class="spacer"></div> |
| <div id="target"></div> |
| <div class="spacer"></div> |
| </div> |
| </div> |
| |
| <script> |
| promise_test(async t => { |
| const timeline = new ViewTimeline({ subject: target }); |
| const anim = target.animate({ opacity: [0, 0.5] }, { timeline: timeline }); |
| t.add_cleanup(() => { |
| anim.cancel(); |
| }); |
| anim.rangeStart = "1em"; |
| container.scrollLeft = 750; |
| await waitForNextFrame(); |
| assert_equals(getComputedStyle(target).opacity, "1", |
| "Opacity with inactive timeline"); |
| }, "element with display: none should have inactive viewtimeline"); |
| </script> |