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<!DOCTYPE html>
<meta name="viewport" content="width=device-width,initial-scale=1">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/intersection-observer-test-utils.js"></script>
<style>
body, html {
margin: 0;
}
pre, #log {
position: absolute;
top: 0;
left: 200px;
}
#target {
width: 100px;
height: 100px;
background-color: green;
}
@keyframes rotate {
from {
transform: rotate(0deg);
}
to {
transform: rotate(45deg);
}
}
#occluder {
will-change: transform;
width: 100px;
height: 100px;
background-color: blue;
}
</style>
<div id="target"></div>
<div id="occluder"></div>
<script>
var vw = document.documentElement.clientWidth;
var vh = document.documentElement.clientHeight;
var delay = 100;
var entries = [];
var target;
var occluder;
runTestCycle(function() {
target = document.getElementById("target");
occluder = document.getElementById("occluder");
assert_true(!!target, "target exists");
assert_true(!!occluder, "occluder exists");
var observer = new IntersectionObserver(function(changes) {
entries = entries.concat(changes)
}, {trackVisibility: true, delay: delay});
observer.observe(target);
entries = entries.concat(observer.takeRecords());
assert_equals(entries.length, 0, "No initial notifications.");
runTestCycle(step0, "First rAF.", delay);
}, "IntersectionObserverV2 in a single document using the implicit root, with an animated occluding element.", delay);
function step0() {
occluder.style.animation = "rotate .1s linear";
step_timeout(() => {
runTestCycle(step1, "occluder.style.animation = 'rotate .1s linear'", delay);
}, 50);
checkLastEntry(entries, 0, [0, 100, 0, 100, 0, 100, 0, 100, 0, vw, 0, vh, true, true]);
}
function step1() {
checkLastEntry(entries, 1, [0, 100, 0, 100, 0, 100, 0, 100, 0, vw, 0, vh, true, false]);
}
</script>
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