Bug 191462 – [css-grid] Percentage height on replaced item with scrollbar

• Status: RESOLVED
• Resolution: FIXED
• Component: Layout and Rendering

[Javier Fernandez]

Created attachment 354325 [details]
Test case to reproduce the issue

If you have a replaced item that has scrollbar and a 100% height,
the height is wrongly computed as it doesn't get subtracted the scrollbar.

In the attached example you shouldn't see any overflow
(so you cannot actually scroll).

Created attachment 413803 [details]
Patch

[Manuel Rego Casasnovas]

Comment on attachment 413803 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=413803&action=review

Thanks for the patch, it looks good, but you need to fix some stuff before landing.

> Source/WebCore/ChangeLog:9
> +        https://github.com/web-platform-tests/wpt/commit/538eedafb15733c6113b44998170a6bbdae7518b

It's good to refer to the original patch in the ChangeLog, but we also should explain and describe the change in this file. How the changes are fixing the issue.

Apart from that, as we're now passing the test css/css-grid/grid-items/percentage-size-replaced-subitems-001.html, we should remove the line for that test in TestExpectations. So the test is actually run by the bots.

> Source/WebCore/ChangeLog:11
> +        Reviewed by NOBODY (OOPS!).

This line should be moved above, just after the URL bug line with an empty line in the middle.

> Source/WebCore/rendering/RenderBox.cpp:3202
> +                    stretchedHeight = block->overridingLogicalHeight() - block->borderAndPaddingLogicalHeight() - block->scrollbarLogicalHeight();

I guess you can use block->overridingContentLogicalHeight() directly here.

Created attachment 413813 [details]
Patch

Created attachment 413817 [details]
Patch

[Manuel Rego Casasnovas]

Comment on attachment 413817 [details]
Patch

r=me

[EWS]

Committed r269717: <https://trac.webkit.org/changeset/269717>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 413817 [details].

[Radar WebKit Bug Importer]

<rdar://problem/71314152>