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LibWeb: Ensure all DocumentTimeline objects have the same time value

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The DocumentTimeline constructor used the current millisecond time to
initialize its currentTime, but that means that a newly created timeline
would always have a different time value than other timelines that have
been through the update_animations_and_send_events function.
This commit is contained in:
Matthew Olsson 2024-06-02 06:48:36 -07:00 • committed by Andreas Kling
commit 37322baf54
Notes: sideshowbarker 2024-07-17 05:02:35 +09:00
5 changed files with 32 additions and 3 deletions
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18
Tests/LibWeb/Text/input/WebAnimations/misc/DocumentTimeline.html Normal file
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<!DOCTYPE html>
<script src="../../include.js"></script>
<script>
test(() => {
function timesAreClose(a, b) {
return Math.abs(a - b) <= 1;
}
let timeline = new DocumentTimeline();
println(`new timeline time equals document timeline time: ${timesAreClose(timeline.currentTime, document.timeline.currentTime)}`);
timeline = new DocumentTimeline({ originTime: 0 });
println(`new timeline originTime defaults to 0: ${timesAreClose(timeline.currentTime, document.timeline.currentTime)}`);
timeline = new DocumentTimeline({ originTime: 1000 });
let passed = timesAreClose(timeline.currentTime + 1000, document.timeline.currentTime);
println(`new timeline originTime offsets from document timeline: ${passed}`)
});
</script>