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layout: Round clientTop, etc queries to pixels properly (#31187)

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* layout: Round getClientRect queries to pixels properly

Instead of just flooring all pixels in getClientRect queries, we should
round the rectangle.

* Fix scrollWidth/scrollHeight too, and tests

* Tests passing

* Test expectation for legacy layout

---------

Co-authored-by: Oriol Brufau <obrufau@igalia.com>
This commit is contained in:
Martin Robinson 2024-01-27 17:34:21 +01:00 • committed by GitHub
parent bbba839278
commit bbe505e52b
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9 changed files with 194 additions and 25 deletions
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24
tests/wpt/meta/css/cssom-view/subpixel-sizes-and-offsets.tentative.html.ini Normal file
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@ -0,0 +1,24 @@
[subpixel-sizes-and-offsets.tentative.html]
[clientWidth, offsetWidth and scrollWidth round 5.5 to 6]
expected: FAIL
[clientWidth, offsetWidth and scrollWidth round 5.9 to 6]
expected: FAIL
[clientHeight, offsetHeight and scrollHeight round 5.1 to 5]
expected: FAIL
[clientHeight, offsetHeight and scrollHeight round 5.5 to 6]
expected: FAIL
[clientHeight, offsetHeight and scrollHeight round 5.9 to 6]
expected: FAIL
[clientLeft and clientTop don't round 44.9]
expected: FAIL
[clientLeft and clientTop don't round 44.5]
expected: FAIL
[clientLeft and clientTop don't round 44.1]
expected: FAIL