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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1277814
-->
<head>
<meta charset="utf-8">
<title>Test for Bug 1277814</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/paint_listener.js"></script>
<script type="application/javascript" src="apz_test_utils.js"></script>
<script type="application/javascript" src="apz_test_native_event_utils.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<script type="application/javascript">
async function test() {
// Trigger the buggy scenario
var subframe = document.getElementById("bug1277814-div");
subframe.classList.add("a");
// The transform change is animated, so let's step through 1s of animation
var utils = SpecialPowers.getDOMWindowUtils(window);
for (var i = 0; i < 60; i++) {
utils.advanceTimeAndRefresh(16);
}
utils.restoreNormalRefresh();
// Wait for the layer tree with any updated dispatch-to-content region to
// get pushed over to the APZ
await promiseAllPaintsDone();
await promiseOnlyApzControllerFlushed();
// Trigger layerization of the subframe by scrolling the wheel over it
await promiseMoveMouseAndScrollWheelOver(subframe, 10, 10);
// Give APZ the chance to compute a displayport, and content
// to render based on it.
await promiseApzFlushedRepaints();
// Examine the content-side APZ test data
var contentTestData = utils.getContentAPZTestData();
// Test that the scroll frame for the div 'bug1277814-div' appears in
// the APZ test data. The bug this test is for causes the displayport
// calculation for this scroll frame to go wrong, causing it not to
// become layerized.
contentTestData = convertTestData(contentTestData);
var foundIt = false;
for (var seqNo in contentTestData.paints) {
var paint = contentTestData.paints[seqNo];
for (var scrollId in paint) {
var scrollFrame = paint[scrollId];
if ("contentDescription" in scrollFrame &&
scrollFrame.contentDescription.includes("bug1277814-div")) {
foundIt = true;
}
}
}
SimpleTest.ok(foundIt, "expected to find APZ test data for bug1277814-div");
}
if (isApzEnabled()) {
SimpleTest.waitForExplicitFinish();
pushPrefs([["apz.test.logging_enabled", true]])
.then(waitUntilApzStable)
.then(test)
.then(SimpleTest.finish, SimpleTest.finishWithFailure);
}
</script>
<style>
#bug1277814-div
{
position: absolute;
left: 0;
top: 0;
padding: .5em;
overflow: auto;
color: white;
background: green;
max-width: 30em;
max-height: 6em;
visibility: hidden;
transform: scaleY(0);
transition: transform .15s ease-out, visibility 0s ease .15s;
}
#bug1277814-div.a
{
visibility: visible;
transform: scaleY(1);
transition: transform .15s ease-out;
}
</style>
</head>
<body>
<!-- Use a unique id because we'll be checking for it in the content
description logged in the APZ test data -->
<div id="bug1277814-div">
CoolCmd<br>CoolCmd<br>CoolCmd<br>CoolCmd<br>
CoolCmd<br>CoolCmd<br>CoolCmd<br>CoolCmd<br>
CoolCmd<br>CoolCmd<br>CoolCmd<br>CoolCmd<br>
CoolCmd<br>CoolCmd<br>CoolCmd<br>CoolCmd<br>
CoolCmd<br>CoolCmd<br>CoolCmd<br>CoolCmd<br>
<button>click me</button>
</body>
</html>
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