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.

Episoder(395)

Blink DOM Tree Architecture and Implementation Deep Dive

Blink DOM Tree Architecture and Implementation Deep Dive

This technical deep dive explores the C++ architecture and implementation of the Document Object Model (DOM) within Blink, Chromium’s rendering engine. It details how the DOM is represented as a hiera...

21 Jan 33min

DrawScrollingContentsOp: Accelerated Scrolling via Raster-Inducing Display Lists

DrawScrollingContentsOp: Accelerated Scrolling via Raster-Inducing Display Lists

The provided text describes DrawScrollingContentsOp, a specialized paint operation within Chromium’s rendering engine that enhances scrolling performance for non-composited content. By utilizing the R...

21 Jan 30min

Chromium Compositor Synced Properties: Deep Dive

Chromium Compositor Synced Properties: Deep Dive

Chromium uses synced properties as a specialized coordination system to maintain consistency between the main thread and the compositor thread. These properties manage essential values that change fre...

21 Jan 27min

Mastering CSS Background Attachment: A Technical Guide

Mastering CSS Background Attachment: A Technical Guide

The provided text offers a technical examination of the background-attachment CSS property, detailing how it dictates whether images remain static or move during scrolling. It identifies three primary...

20 Jan 24min

Blink and Havok: Engineering Parallels in Web and Physics Engines

Blink and Havok: Engineering Parallels in Web and Physics Engines

This text examines the technical similarities between Chromium’s Blink engine and high-performance physics engines like Havok. Although they serve different purposes, both rely on iterative update loo...

20 Jan 29min

CSS Float Layout and Blink's LayoutNG Implementation

CSS Float Layout and Blink's LayoutNG Implementation

The provided text explains the technical specifications and implementation of CSS float layouts, specifically focusing on the Blink engine's LayoutNG in Chrome. It details how floats are positioned ou...

20 Jan 26min

CSS Positioned Layout Module Level 3

CSS Positioned Layout Module Level 3

The CSS Positioned Layout Module Level 3 is a comprehensive update that modernizes how elements are placed and layered on web pages. It preserves the core behaviors of CSS2.1 while introducing sticky ...

20 Jan 14min

CSS Overflow Module Level 4

CSS Overflow Module Level 4

The provided documents detail the CSS Overflow Module Level 4, a specification that enhances how web browsers handle content exceeding an element's boundaries. It introduces sophisticated controls lik...

19 Jan 36min

Populært innen Teknologi

lydartikler-fra-aftenposten
romkapsel
tomprat-med-gunnar-tjomlid
rss-avskiltet
nasjonal-sikkerhetsmyndighet-nsm
teknisk-sett
energi-og-klima
smart-forklart
elektropodden
rss-impressions-2
shifter
rss-alt-vi-kan
pedagogisk-intelligens
rss-ki-praten
teknologi-og-mennesker
hans-petter-og-co
fornybaren
rss-for-alarmen-gar
rss-snakk-om-sikkerhet
rss-heis