summaryrefslogtreecommitdiffstats
path: root/layout/reftests/css-animations/no-stacking-context-transform-removing-animation-in-delay.html
diff options
context:
space:
mode:
Diffstat (limited to 'layout/reftests/css-animations/no-stacking-context-transform-removing-animation-in-delay.html')
-rw-r--r--layout/reftests/css-animations/no-stacking-context-transform-removing-animation-in-delay.html47
1 files changed, 47 insertions, 0 deletions
diff --git a/layout/reftests/css-animations/no-stacking-context-transform-removing-animation-in-delay.html b/layout/reftests/css-animations/no-stacking-context-transform-removing-animation-in-delay.html
new file mode 100644
index 000000000..19605a93c
--- /dev/null
+++ b/layout/reftests/css-animations/no-stacking-context-transform-removing-animation-in-delay.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<title>
+Removing CSS animation in delay phase destroys stacking context
+</title>
+<style>
+span {
+ height: 100px;
+ width: 100px;
+ position: fixed;
+ background: green;
+ top: 50px;
+}
+@keyframes TransformNone {
+ from, to { transform: none }
+}
+#test {
+ width: 100px; height: 100px;
+ background: blue;
+ transform: none ! important;
+}
+</style>
+<span></span>
+<div id="test"></div>
+<script>
+window.addEventListener("load", () => {
+ var target = document.getElementById("test");
+ target.style.animation = "TransformNone 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 firstPaint() {
+ window.removeEventListener("MozAfterPaint", firstPaint, false);
+ // Here we have CSS animation on transform:none 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 transform:none style, so we should not create any
+ // stacking context.
+ document.documentElement.classList.remove("reftest-wait");
+ });
+ }, false);
+});
+</script>