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