Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 7c138c89f181e0a39ee64cd986ef11a848793575
https://github.com/WebKit/WebKit/commit/7c138c89f181e0a39ee64cd986ef11a848793575
Author: Vitaly Dyachkov <[email protected]>
Date: 2024-03-14 (Thu, 14 Mar 2024)
Changed paths:
M Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/LayerTreeHost.cpp
Log Message:
-----------
[CoordinatedGraphics] Setting `LocalFrameView`'s content size should not
require relayout
https://bugs.webkit.org/show_bug.cgi?id=270445
Reviewed by Darin Adler.
In `LocalFrameViewLayoutContext::performLayout()` we layout the render
tree in several phases:
- `LayoutPhase::InPreLayout`
- `LayoutPhase::InRenderTreeLayout`
- `LayoutPhase::InViewSizeAdjust`
- `LayoutPhase::InPostLayout`
In the last phase, we assert that the layout root doesn't require
relayout after updating `LocalFrameView`'s content size.
Currently, at the end of `LayerTreeHost::contentsSizeChanged()` we call
`didChangeViewport()`, which in some circumstances (e.g. when fixed
layout is used) can trigger
`LocalFrameView::setViewportConstrainedObjectsNeedLayout()` and make
`RenderView::needsLayout()` return `true`. This should not happen.
* Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/LayerTreeHost.cpp:
(WebKit::LayerTreeHost::contentsSizeChanged):
Canonical link: https://commits.webkit.org/276079@main
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