layout: Account for transform in scrollable overflow (#36138)

In the scrollable overflow calcutation, apply CSS transforms to boxes
and scrollable overflow of the descendant. Clip unreachable scrollable
overflow according to it's block start and inline start scrolling
direction. And, renamed `Fragment::scrolling_overflow` to
`Fragment::scrolling_overflow_for_parent` as it was calculating the
scrolling overflow contribution from a child.

Add several WPT tests, testing the transform interaction `rotate`,
`scale`, and `skew` with scrollable overflow. There are several WPT test
that are testing the interaction that not expected from current browsers
implementation according to the spec.

Testing: Existing and new WPT. 
Fixes: #36031

---------

Signed-off-by: stevennovaryo <steven.novaryo@gmail.com>
This commit is contained in:
Steven Novaryo 2025-04-29 17:37:27 +08:00 committed by GitHub
parent b92542b756
commit bd6928f3dc
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37 changed files with 974 additions and 288 deletions

View file

@ -1,3 +0,0 @@
[overflow-inline-transform-relative.html]
[#target used transform when computing scroll overflow]
expected: FAIL

View file

@ -1,7 +1,4 @@
[scroll-overflow-padding-block-001.html]
expected: ERROR
[undefined block-end]
expected: FAIL
[undefined block-start]
expected: [PASS, FAIL]

View file

@ -1,9 +0,0 @@
[scrollable-overflow-transform-001.html]
[.container 1]
expected: FAIL
[.container 2]
expected: FAIL
[.container 3]
expected: FAIL

View file

@ -1,9 +0,0 @@
[scrollable-overflow-transform-002.html]
[.container 1]
expected: FAIL
[.container 2]
expected: FAIL
[.container 3]
expected: FAIL

View file

@ -1,9 +0,0 @@
[scrollable-overflow-transform-003.html]
[.container 1]
expected: FAIL
[.container 2]
expected: FAIL
[.container 3]
expected: FAIL

View file

@ -0,0 +1,3 @@
[scrollable-overflow-transform-005.tentative.html]
[.container 6]
expected: FAIL

View file

@ -0,0 +1,6 @@
[scrollable-overflow-transform-009.html]
[.container 2]
expected: FAIL
[.container 3]
expected: FAIL

View file

@ -0,0 +1,6 @@
[scrollable-overflow-transform-010.tentative.html]
[.container 1]
expected: FAIL
[.container 2]
expected: FAIL

View file

@ -1,9 +0,0 @@
[scrollable-overflow-transform-dynamic-001.html]
[Check scrollWidth before and after transform chage]
expected: FAIL
[Check scrollHeight before and after transform chage]
expected: FAIL
[Check scrollWidth and scrollHeight before and after transform chage]
expected: FAIL

View file

@ -1,9 +0,0 @@
[scrollable-overflow-transform-dynamic-002.html]
[Check scrollWidth before and after transform chage]
expected: FAIL
[Check scrollHeight before and after transform chage]
expected: FAIL
[Check scrollWidth and scrollHeight before and after transform chage]
expected: FAIL

View file

@ -1,9 +0,0 @@
[scrollable-overflow-transform-dynamic-003.html]
[Check scrollWidth before and after transform chage]
expected: FAIL
[Check scrollHeight before and after transform chage]
expected: FAIL
[Check scrollWidth and scrollHeight before and after transform chage]
expected: FAIL

View file

@ -1,9 +0,0 @@
[scrollable-overflow-transform-dynamic-004.html]
[Check scrollWidth before and after position and transform chage]
expected: FAIL
[Check scrollHeight before and after position and transform chage]
expected: FAIL
[Check scrollWidth and scrollHeight after position and transform chage]
expected: FAIL

View file

@ -1,9 +0,0 @@
[scrollable-overflow-transform-dynamic-005.html]
[Check scrollWidth before and after appendChild() and transform chage]
expected: FAIL
[Check scrollHeight before and after appendChild() and transform chage]
expected: FAIL
[Check scrollWidth and scrollHeight before and after appendChild() and transform chage]
expected: FAIL

View file

@ -1,9 +0,0 @@
[scrollable-overflow-transform-dynamic-006.html]
[Check scrollWidth before and after removeChild() and transform chage]
expected: FAIL
[Check scrollHeight before and after removeChild() and transform chage]
expected: FAIL
[Check scrollWidth and scrollHeight before and after removeChild() and transform chage]
expected: FAIL

View file

@ -0,0 +1,168 @@
[scrollable-overflow-transform-unreachable-region.html]
[scrollWidth of display: flow-root; direction: ltr; writing-mode: vertical-rl; flex-direction: row; flex-wrap: nowrap;]
expected: FAIL
[scrollWidth of display: flow-root; direction: rtl; writing-mode: vertical-lr; flex-direction: row; flex-wrap: nowrap;]
expected: FAIL
[scrollHeight of display: flow-root; direction: rtl; writing-mode: vertical-lr; flex-direction: row; flex-wrap: nowrap;]
expected: FAIL
[scrollHeight of display: flow-root; direction: rtl; writing-mode: vertical-rl; flex-direction: row; flex-wrap: nowrap;]
expected: FAIL
[scrollWidth of display: flex; direction: ltr; writing-mode: vertical-rl; flex-direction: row; flex-wrap: nowrap;]
expected: FAIL
[scrollWidth of display: flex; direction: rtl; writing-mode: vertical-lr; flex-direction: row; flex-wrap: nowrap;]
expected: FAIL
[scrollHeight of display: flex; direction: rtl; writing-mode: vertical-lr; flex-direction: row; flex-wrap: nowrap;]
expected: FAIL
[scrollHeight of display: flex; direction: rtl; writing-mode: vertical-rl; flex-direction: row; flex-wrap: nowrap;]
expected: FAIL
[scrollHeight of display: flex; direction: ltr; writing-mode: horizontal-tb; flex-direction: row; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollWidth of display: flex; direction: ltr; writing-mode: vertical-lr; flex-direction: row; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollHeight of display: flex; direction: rtl; writing-mode: horizontal-tb; flex-direction: row; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollHeight of display: flex; direction: rtl; writing-mode: vertical-lr; flex-direction: row; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollWidth of display: flex; direction: rtl; writing-mode: vertical-rl; flex-direction: row; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollHeight of display: flex; direction: rtl; writing-mode: vertical-rl; flex-direction: row; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollWidth of display: flex; direction: ltr; writing-mode: horizontal-tb; flex-direction: row-reverse; flex-wrap: nowrap;]
expected: FAIL
[scrollHeight of display: flex; direction: ltr; writing-mode: vertical-lr; flex-direction: row-reverse; flex-wrap: nowrap;]
expected: FAIL
[scrollWidth of display: flex; direction: ltr; writing-mode: vertical-rl; flex-direction: row-reverse; flex-wrap: nowrap;]
expected: FAIL
[scrollHeight of display: flex; direction: ltr; writing-mode: vertical-rl; flex-direction: row-reverse; flex-wrap: nowrap;]
expected: FAIL
[scrollWidth of display: flex; direction: rtl; writing-mode: horizontal-tb; flex-direction: row-reverse; flex-wrap: nowrap;]
expected: FAIL
[scrollWidth of display: flex; direction: rtl; writing-mode: vertical-lr; flex-direction: row-reverse; flex-wrap: nowrap;]
expected: FAIL
[scrollWidth of display: flex; direction: ltr; writing-mode: horizontal-tb; flex-direction: row-reverse; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollHeight of display: flex; direction: ltr; writing-mode: horizontal-tb; flex-direction: row-reverse; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollWidth of display: flex; direction: ltr; writing-mode: vertical-lr; flex-direction: row-reverse; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollHeight of display: flex; direction: ltr; writing-mode: vertical-lr; flex-direction: row-reverse; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollHeight of display: flex; direction: ltr; writing-mode: vertical-rl; flex-direction: row-reverse; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollWidth of display: flex; direction: rtl; writing-mode: horizontal-tb; flex-direction: row-reverse; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollHeight of display: flex; direction: rtl; writing-mode: horizontal-tb; flex-direction: row-reverse; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollWidth of display: flex; direction: rtl; writing-mode: vertical-rl; flex-direction: row-reverse; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollWidth of display: flex; direction: ltr; writing-mode: vertical-rl; flex-direction: column; flex-wrap: nowrap;]
expected: FAIL
[scrollWidth of display: flex; direction: rtl; writing-mode: vertical-lr; flex-direction: column; flex-wrap: nowrap;]
expected: FAIL
[scrollHeight of display: flex; direction: rtl; writing-mode: vertical-lr; flex-direction: column; flex-wrap: nowrap;]
expected: FAIL
[scrollHeight of display: flex; direction: rtl; writing-mode: vertical-rl; flex-direction: column; flex-wrap: nowrap;]
expected: FAIL
[scrollWidth of display: flex; direction: ltr; writing-mode: horizontal-tb; flex-direction: column; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollHeight of display: flex; direction: ltr; writing-mode: vertical-lr; flex-direction: column; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollWidth of display: flex; direction: ltr; writing-mode: vertical-rl; flex-direction: column; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollHeight of display: flex; direction: ltr; writing-mode: vertical-rl; flex-direction: column; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollWidth of display: flex; direction: rtl; writing-mode: horizontal-tb; flex-direction: column; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollWidth of display: flex; direction: rtl; writing-mode: vertical-lr; flex-direction: column; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollHeight of display: flex; direction: ltr; writing-mode: horizontal-tb; flex-direction: column-reverse; flex-wrap: nowrap;]
expected: FAIL
[scrollWidth of display: flex; direction: ltr; writing-mode: vertical-lr; flex-direction: column-reverse; flex-wrap: nowrap;]
expected: FAIL
[scrollHeight of display: flex; direction: rtl; writing-mode: horizontal-tb; flex-direction: column-reverse; flex-wrap: nowrap;]
expected: FAIL
[scrollHeight of display: flex; direction: rtl; writing-mode: vertical-lr; flex-direction: column-reverse; flex-wrap: nowrap;]
expected: FAIL
[scrollWidth of display: flex; direction: rtl; writing-mode: vertical-rl; flex-direction: column-reverse; flex-wrap: nowrap;]
expected: FAIL
[scrollHeight of display: flex; direction: rtl; writing-mode: vertical-rl; flex-direction: column-reverse; flex-wrap: nowrap;]
expected: FAIL
[scrollWidth of display: flex; direction: ltr; writing-mode: horizontal-tb; flex-direction: column-reverse; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollHeight of display: flex; direction: ltr; writing-mode: horizontal-tb; flex-direction: column-reverse; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollWidth of display: flex; direction: ltr; writing-mode: vertical-lr; flex-direction: column-reverse; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollHeight of display: flex; direction: ltr; writing-mode: vertical-lr; flex-direction: column-reverse; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollHeight of display: flex; direction: ltr; writing-mode: vertical-rl; flex-direction: column-reverse; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollWidth of display: flex; direction: rtl; writing-mode: horizontal-tb; flex-direction: column-reverse; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollHeight of display: flex; direction: rtl; writing-mode: horizontal-tb; flex-direction: column-reverse; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollWidth of display: flex; direction: rtl; writing-mode: vertical-rl; flex-direction: column-reverse; flex-wrap: wrap-reverse;]
expected: FAIL
[scrollWidth of display: grid; direction: ltr; writing-mode: vertical-rl; flex-direction: row; flex-wrap: nowrap;]
expected: FAIL
[scrollWidth of display: grid; direction: rtl; writing-mode: vertical-lr; flex-direction: row; flex-wrap: nowrap;]
expected: FAIL
[scrollHeight of display: grid; direction: rtl; writing-mode: vertical-lr; flex-direction: row; flex-wrap: nowrap;]
expected: FAIL
[scrollHeight of display: grid; direction: rtl; writing-mode: vertical-rl; flex-direction: row; flex-wrap: nowrap;]
expected: FAIL