Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 7c0a9d18a4e012bcfba7939a6bf697e50ad079b1
https://github.com/WebKit/WebKit/commit/7c0a9d18a4e012bcfba7939a6bf697e50ad079b1
Author: Harry Chen <[email protected]>
Date: 2024-09-25 (Wed, 25 Sep 2024)
Changed paths:
M
LayoutTests/imported/w3c/web-platform-tests/mathml/presentation-markup/operators/size-and-position-of-stretchy-fences-with-default-font-001-expected.txt
M
LayoutTests/imported/w3c/web-platform-tests/mathml/presentation-markup/operators/stretchy-largeop-with-default-font-2-expected.txt
M
LayoutTests/imported/w3c/web-platform-tests/mathml/presentation-markup/scripts/scripts-rendering-from-in-flow-expected.txt
M
LayoutTests/imported/w3c/web-platform-tests/mathml/relations/css-styling/floats/not-floating-001-expected.txt
R
LayoutTests/imported/w3c/web-platform-tests/mathml/relations/css-styling/ignored-properties-001-expected.txt
M
LayoutTests/imported/w3c/web-platform-tests/mathml/relations/css-styling/not-participating-to-parent-layout-expected.txt
M
LayoutTests/imported/w3c/web-platform-tests/mathml/relations/css-styling/out-of-flow/all-mathml-containers-expected.txt
A
LayoutTests/imported/w3c/web-platform-tests/mathml/relations/html5-tree/dynamic-childlist-002-expected.txt
R
LayoutTests/platform/glib/imported/w3c/web-platform-tests/mathml/presentation-markup/scripts/scripts-rendering-from-in-flow-expected.txt
A
LayoutTests/platform/glib/imported/w3c/web-platform-tests/mathml/relations/css-styling/floats/not-floating-001-expected.txt
M
LayoutTests/platform/glib/imported/w3c/web-platform-tests/mathml/relations/css-styling/ignored-properties-001-expected.txt
M
LayoutTests/platform/glib/imported/w3c/web-platform-tests/mathml/relations/html5-tree/dynamic-childlist-002-expected.txt
M
LayoutTests/platform/gtk/imported/w3c/web-platform-tests/mathml/relations/css-styling/not-participating-to-parent-layout-expected.txt
A
LayoutTests/platform/ios/imported/w3c/web-platform-tests/mathml/relations/css-styling/floats/not-floating-001-expected.txt
M
LayoutTests/platform/ios/imported/w3c/web-platform-tests/mathml/relations/css-styling/ignored-properties-001-expected.txt
M
LayoutTests/platform/ios/imported/w3c/web-platform-tests/mathml/relations/html5-tree/dynamic-childlist-002-expected.txt
M
LayoutTests/platform/mac/imported/w3c/web-platform-tests/mathml/relations/css-styling/ignored-properties-001-expected.txt
R
LayoutTests/platform/mac/imported/w3c/web-platform-tests/mathml/relations/html5-tree/dynamic-childlist-002-expected.txt
M Source/WebCore/rendering/mathml/RenderMathMLBlock.cpp
M Source/WebCore/rendering/mathml/RenderMathMLBlock.h
M Source/WebCore/rendering/mathml/RenderMathMLFraction.cpp
M Source/WebCore/rendering/mathml/RenderMathMLMath.cpp
M Source/WebCore/rendering/mathml/RenderMathMLMenclose.cpp
M Source/WebCore/rendering/mathml/RenderMathMLOperator.cpp
M Source/WebCore/rendering/mathml/RenderMathMLPadded.cpp
M Source/WebCore/rendering/mathml/RenderMathMLRoot.cpp
M Source/WebCore/rendering/mathml/RenderMathMLRow.cpp
M Source/WebCore/rendering/mathml/RenderMathMLScripts.cpp
M Source/WebCore/rendering/mathml/RenderMathMLSpace.cpp
M Source/WebCore/rendering/mathml/RenderMathMLToken.cpp
M Source/WebCore/rendering/mathml/RenderMathMLUnderOver.cpp
Log Message:
-----------
Consistent handling of out-of-flow children in MathML layout functions
https://bugs.webkit.org/show_bug.cgi?id=179739
Reviewed by Frédéric Wang.
According to the spec [1], out-of-flow children should not affect the rendering
of MathML elements. Ensure that out-of-flow children are still laid out and
rendered, but that layout/validity logic only concerns in-flow children.
WebKit does not follow the spec specifically here ([2]), causing floating
children to be OOF:
> The float property does not create floating of elements whose parent's
> computed display value is block math or inline math, and does not take them
> out-of-flow.
Cases in the WPT test in [3] used to pass regardless, since layout functions
for MathML elements did not consider flow. Because they now *do* consider flow,
the float property is no longer ignored in layout (as it causes elements to be
OOF) and cases in the WPT test fail.
See webkit.org/b/279978.
[1] https://w3c.github.io/mathml-core/
[2] https://w3c.github.io/mathml-core/#css-styling
[3]
https://github.com/web-platform-tests/wpt/blob/4d67f35a4dcc96bc40de00102a150d925d9fca61/mathml/relations/css-styling/floats/not-floating-001.html
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