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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=2100"/>
<title>Check that double tapping on a tall element that is >90% width of viewport doesn't scroll to the top of it when scrolled down</title>
<script type="application/javascript" src="apz_test_native_event_utils.js"></script>
<script type="application/javascript" src="apz_test_utils.js"></script>
<script src="/tests/SimpleTest/paint_listener.js"></script>
<script type="application/javascript">
async function test() {
let useTouchpad = (location.search == "?touchpad");
var resolution = await getResolution();
ok(resolution > 0,
"The initial_resolution is " + resolution + ", which is some sane value");
// Check that double-tapping once on a small element zooms in
await doubleTapOn(document.getElementById("target2"), 10, 10, useTouchpad);
let prev_resolution = resolution;
resolution = await getResolution();
ok(resolution > prev_resolution, "The first double-tap has increased the resolution to " + resolution);
// instant scroll to the bottom of the page
window.scrollTo({
top: 40000,
left: 0,
behavior: 'auto'
});
await promiseApzFlushedRepaints();
let scrollPos = window.scrollY;
ok(scrollPos > 1500, "window scrolled down (1)");
ok(scrollPos > window.innerHeight * 2, "window scrolled down (2)")
info("window.scrollY " + window.scrollY);
info("window.innerHeight " + window.innerHeight);
info("visualViewport.pageTop " + visualViewport.pageTop);
let target = document.getElementById("target");
let x = 20;
let y = visualViewport.pageTop + 20;
// Check that double-tapping on the big element zooms out
await doubleTapOn(target, x, y, useTouchpad);
prev_resolution = resolution;
resolution = await getResolution();
ok(resolution < prev_resolution, "The second double-tap has decreased the resolution to " + resolution);
info("scrollPos " + scrollPos);
info("window.scrollY " + window.scrollY);
ok(window.scrollY > 1500, "window is still scrolled down (1)");
ok(window.scrollY >= scrollPos - window.innerHeight, "window is still scrolled down (2)");
}
waitUntilApzStable()
.then(test)
.then(subtestDone, subtestFailed);
</script>
<style>
.container {
background-color: #eee;
width: 95vw;
height: 400vh;
}
.smallcontainer {
background-color: #aaa;
width: 40px;
height: 40px;
}
</style>
</head>
<body>
<div id="target" class="container">
<div id="target2" class="smallcontainer">
</div>
</div>
</body>
</html>
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