FragmentPaintPropertyTreeBuilder::UpdateScrollAndScrollTranslation()
Blink28618 Okt 2025

FragmentPaintPropertyTreeBuilder::UpdateScrollAndScrollTranslation()

The provided sources offer an extensive, line-by-line analysis of Blink’s rendering function, FragmentPaintPropertyTreeBuilder::UpdateScrollAndScrollTranslation(), which is critical for implementing scrolling behavior in Chrome. This function manages the creation and updating of two primary data structures: the Scroll Property Node (which defines the logical scroll container, including its viewport, content size, and CSS properties like overscroll behavior and scroll snapping) and the Scroll Translation Transform Node (which applies the negative scroll offset as a geometric translation to descendant content). The process is part of RenderingNG, which uses separate property trees (Transform, Clip, Effect, Scroll) to achieve efficient, incremental updates. The method ensures that only scrollable objects receive these nodes, updates related scrollbar Effect Nodes, and implements optimizations like directly updating the compositor's transform for simple scroll offset changes without rebuilding the entire paint artifact.

Avsnitt(449)

Inside Blink: The Paint Property Tree Builder Pipeline

Inside Blink: The Paint Property Tree Builder Pipeline

The PaintPropertyTreeBuilder is a critical component within Google Chrome’s Blink engine that converts layout data into structural property trees used for rendering. Operating during the PrePaint phas...

24 Dec 20251h 4min

Promisify Scroll: Promise-Based Web Scrolling API

Promisify Scroll: Promise-Based Web Scrolling API

The provided text describes a web platform initiative to modernize how browsers handle scrolling by having programmatic scroll methods return JavaScript Promises. Currently, functions like scrollTo() ...

24 Dec 202528min

CSS Containing Blocks and Blink Engine Implementation

CSS Containing Blocks and Blink Engine Implementation

This text examines how CSS containing blocks function and how the Blink rendering engine implements these rules within Chromium. It explains that a containing block is the essential rectangular refere...

23 Dec 202526min

Axis-Split Sticky Constraints in Chromium Layout and Compositing

Axis-Split Sticky Constraints in Chromium Layout and Compositing

Chromium is refining its rendering engine to support axis-split sticky constraints, allowing elements to stick to different scroll containers for horizontal and vertical movements. Previously, a singl...

23 Dec 202533min

Mastering CSS Sticky Positioning and Scroll Containers

Mastering CSS Sticky Positioning and Scroll Containers

This documentation provides a comprehensive analysis of CSS sticky positioning, a hybrid layout scheme that anchors elements within their nearest scroll container while maintaining their space in the ...

20 Dec 202534min

Blink Paint Property Trees: Construction and Lifecycle Phases

Blink Paint Property Trees: Construction and Lifecycle Phases

The provided text explains the construction and lifecycle of paint property trees within the Blink rendering engine. These structures, which include Transform, Clip, Effect, and Scroll trees, replace ...

20 Dec 20251h 1min

Chromium's LayerTreeHostClient: The Compositing Bridge

Chromium's LayerTreeHostClient: The Compositing Bridge

The source provides an extensive overview of the LayerTreeHostClient interface, a crucial component in Chromium's rendering architecture that acts as the bridge between the content engine (like Blink ...

18 Dec 202536min

The Definitive Guide to CSS Scroll Snap

The Definitive Guide to CSS Scroll Snap

The source provides a comprehensive technical deep dive into the CSS Scroll Snap Module Level 1, a feature designed to create precise, controlled, and paginated scrolling experiences, such as carousel...

18 Dec 202539min

Populärt inom Teknik

uppgang-och-fall
elbilsveckan
rss-elektrikerpodden
market-makers
skogsforum-podcast
bilar-med-sladd
rss-veckans-ai
har-vi-akt-till-mars-an
rss-technokratin
natets-morka-sida
gubbar-som-tjotar-om-bilar
developers-mer-an-bara-kod
rss-uppgang-och-fall
rss-it-sakerhetspodden
bli-saker-podden
rss-powerboat-sverige-podcast
rss-fabriken-2
rss-laddstationen-med-elbilen-i-sverige
rss-snacka-om-ai
rss-office-365-podden