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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /layout/reftests/css-animations/no-stacking-context-opacity-removing-animation-in-delay.html
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
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Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+<!DOCTYPE html>
+<html class="reftest-wait">
+<title>
+Removing CSS animation in delay phase destroys a stacking context
+</title>
+<style>
+span {
+ height: 100px;
+ width: 100px;
+ position: fixed;
+ background: green;
+ top: 50px;
+}
+@keyframes Opacity0 {
+ from, to { opacity: 0 }
+}
+#test {
+ width: 100px; height: 100px;
+ background: blue;
+ opacity: 1 ! important;
+}
+</style>
+<span></span>
+<div id="test"></div>
+<script>
+window.addEventListener("load", () => {
+ var target = document.getElementById("test");
+ target.style.animation = "Opacity0 100s 100s";
+
+ // We need to wait for MozAfterPaint instead of requestAnimationFrame to
+ // ensure the stacking context has been updated on the compositor.
+ window.addEventListener("MozAfterPaint", function() {
+ // Here we have CSS animation on 100% opacity style element, so
+ // there should be a stacking context.
+
+ target.style.animation = "";
+
+ // This time we don't need to wait for MozAfterPaint because reftest tool
+ // will be received MozAferPaint event.
+ requestAnimationFrame(() => {
+ // Now we have only 100% opacity style, so we should not create any
+ // stacking context.
+ document.documentElement.classList.remove("reftest-wait");
+ });
+ }, {once: true});
+});
+</script>