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<!DOCTYPE html>
<html class="reftest-wait">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="help" src="https://drafts.csswg.org/scroll-animations-1/#named-timeline-range">
<link rel="stylesheet" href="support/animation-range.css">
<script src="/common/reftest-wait.js"></script>
<style>
.meter {
animation: active-interval linear 100s paused;
animation-timeline: auto;
}
.bar {
animation: slide-in linear 100s paused;
animation-timeline: auto;
}
</style>
</head>
<body onload="test();">
<h3>View timeline</h3>
<template id="meters">
<div class="meters">
<div class="cover"><div class="meter"><div class="bar"></div></div><div>Cover</div></div>
<div class="contain"><div class="meter"><div class="bar"></div></div><div>Contain</div></div>
<div class="entry"><div class="meter"><div class="bar"></div></div><div>Entry</div></div>
<div class="exit"><div class="meter"><div class="bar"></div></div><div>Exit</div></div>
</div>
</template>
<div class="flex">
<div>
<div class="scroller" data-scroll-top="10">
<div class="subject" data-progress=".08333,-1,.5,-1"></div>
<div class="spacer"></div>
</div>
</div>
<div>
<div class="scroller" data-scroll-top="30">
<div class="subject" data-progress=".25,.125,2,-1"></div>
<div class="spacer"></div>
</div>
</div>
<div>
<div class="scroller" data-scroll-top="90">
<div class="subject" data-progress=".75,.875,2,-1"></div>
<div class="spacer"></div>
</div>
</div>
<div>
<div class="scroller" data-scroll-top="110">
<div class="subject" data-progress=".91667,2,2,.5"></div>
<div class="spacer"></div>
</div>
</div>
</div>
</body>
<script>
function test() {
let template = document.querySelector('#meters');
let scrollers = document.querySelectorAll('.scroller');
for (let i = 0; i < scrollers.length; i++) {
let subject = scrollers[i].querySelector('.subject');
let clone = template.content.cloneNode(true);
let meters = clone.querySelectorAll('.meter');
let progress = subject.getAttribute('data-progress').split(',').map(s => parseFloat(s));
for (let meter of meters) {
let bar = meter.querySelector('.bar');
let startTime = -progress.splice(0, 1)[0] * 100;
meter.style.animationDelay = `${startTime}s`;
bar.style.animationDelay = `${startTime}s`;
}
subject.appendChild(clone);
scrollers[i].scrollTop = parseInt(scrollers[i].getAttribute('data-scroll-top'));
}
takeScreenshot();
}
</script>
</html>
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