[webkit-changes] [WebKit/WebKit] c1324d: Positioned element with percentage padding should ...

[Ahmad Saleem]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: c1324d73bd3c9620496236c7b3abbda0c0cbd607
      https://github.com/WebKit/WebKit/commit/c1324d73bd3c9620496236c7b3abbda0c0cbd607
  Author: Ahmad Saleem <ahmad.saleem792+github at gmail.com>
  Date:   2022-11-04 (Fri, 04 Nov 2022)

  Changed paths:
    A LayoutTests/fast/block/absolute-position-change-width-with-inline-container-expected.html
    A LayoutTests/fast/block/absolute-position-change-width-with-inline-container.html
    A LayoutTests/fast/block/containing-block-change-percentage-padding-width-recalc-expected.html
    A LayoutTests/fast/block/containing-block-change-percentage-padding-width-recalc.html
    M Source/WebCore/rendering/RenderBlock.cpp

  Log Message:
  -----------
  Positioned element with percentage padding should recalc width when containing block changed

Positioned element with percentage padding should recalc width when containing block changed
https://bugs.webkit.org/show_bug.cgi?id=80808

Reviewed by Alan Baradlay.

This patch is to align Webkit behavior with Blink / Chrome and Gecko / Firefox.

Merge - https://src.chromium.org/viewvc/blink?view=revision&revision=184672

and a test case from Patch Authored by SravanKumar Sandela.

RenderBlock::removePositionObjects usually don't recalc the width of
positioned descendants with percentage padding unless its width is changed.
For positioned elements which changed their containing block, it should be considered as if the width of the containing block changed.

* Source/WebCore/rendering/RenderBlock.cpp:
(RenderBlock::removePositionObjects): Add condition to recalculate the width
* LayoutTests/fast/block/containing-block-change-percentage-padding-width-recalc.html: Added Test Case
* LayoutTests/fast/block/containing-block-change-percentage-padding-width-recalc-expected.html: Added Test Case Expectations
* LayoutTests/fast/block/absolute-position-change-width-with-inline-container.html: Added Test Case
* LayoutTests/fast/block/absolute-position-change-width-with-inline-container-expected.html: Added Test Case Expectations

Canonical link: https://commits.webkit.org/256315@main