gecko-dev/layout/reftests/async-scrolling/checkerboard-1.html
Kartikaya Gupta bc6c7c9f34 Bug 1650081 - Use scrollbar-width:none instead of overflow:hidden to hide scrollbars. r=botond
Instead of using overflow:hidden on the body to hide the scrollbar, this
patch sets scrollbar-width:none on the html element. In some cases
overflow:hidden is set on non-root scrollers (i.e. div elements); in those
cases it is replaced by overflow:scroll;scrollbar-width:none to get an
equivalent effect.

One test had a pre-existing visible scrollbar on a nested scrollframe, but
which started failing with a small fuzz difference. I left the scrollbar as-is
and added an annotation to the reftest.list file.

Note that this only updates the tests that use reftest-async-scroll as those
were the cases that were easily detectable, and causing problems with the
apz.allow_zooming=true pref.

Differential Revision: https://phabricator.services.mozilla.com/D82032
2020-07-03 19:50:11 +00:00

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HTML

<!DOCTYPE HTML>
<html reftest-async-scroll
reftest-displayport-x="0" reftest-displayport-y="0"
reftest-displayport-w="800" reftest-displayport-h="2000"
reftest-async-scroll-x="0" reftest-async-scroll-y="1800"
style="scrollbar-width:none">
<!-- This is a simple test where we set the async-scroll position so that it
extends outside the displayport, and ensure that the checkerboarded area
is filled with the expected background color. -->
<body style="background-color: green; height: 5000px">
<div style="position:absolute; left: 0px; top: 1800px; width: 100px; height: 400px; background-color: red"></div>
</body>