FragmentPaintPropertyTreeBuilder::UpdateScrollAndScrollTranslation()
Blink28618 Loka 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.

Jaksot(403)

(ALT) Chromium Compositor PictureLayerImpl Deep Dive

(ALT) Chromium Compositor PictureLayerImpl Deep Dive

The source provides an extensive technical overview of the cc::PictureLayerImpl class, a critical component in the rendering architecture of Chromium's compositor, responsible for processing content o...

31 Loka 202540min

Chromium Compositor PictureLayerImpl Deep Dive

Chromium Compositor PictureLayerImpl Deep Dive

The source provides an extensive technical overview of the cc::PictureLayerImpl class, a critical component in the rendering architecture of Chromium's compositor, responsible for processing content o...

31 Loka 202536min

Chromium Compositor Picture Layer Deep Dive

Chromium Compositor Picture Layer Deep Dive

This source provides an extensive, practitioner-focused examination of the Chromium Compositor's PictureLayerImpl class and its associated tiling stack, which manages the rasterization and drawing of ...

31 Loka 202536min

Singing and Memory in Ancient Greek Oral Tradition

Singing and Memory in Ancient Greek Oral Tradition

The source materials offer an extensive analysis of how ancient Greek civilization used music and rhythm as fundamental mnemonic tools for preserving and transmitting cultural knowledge long before wi...

30 Loka 20251h 24min

Chrome Property Trees: Blink vs. Compositor Comparison

Chrome Property Trees: Blink vs. Compositor Comparison

The source provides an extensive technical comparison of the Paint Property Trees (PPTs) used in Chrome's Blink rendering engine and the corresponding Compositor Property Trees (CC) utilized by the co...

30 Loka 202553min

Chrome Blink and CC Finch Experiment Guide

Chrome Blink and CC Finch Experiment Guide

The source material is a comprehensive guide detailing the process for Google Chrome engineers to launch an A/B field trial (experiment) for changes made to the rendering engine (Blink) or the composi...

29 Loka 202544min

Chrome's CSS Scroll Snap Implementation: Blink and Compositor Deep Dive

Chrome's CSS Scroll Snap Implementation: Blink and Compositor Deep Dive

The source provides an extensive technical explanation of the implementation of CSS Scroll Snap within the Google Chrome browser, specifically detailing how the feature is managed across the Blink ren...

29 Loka 202541min

Chrome Compositor: Transform Updates Versus Scroll Offset

Chrome Compositor: Transform Updates Versus Scroll Offset

These technical documents provide an in-depth analysis of Chromium's compositor property tree mechanics, focusing on the differences between two methods for updating transform nodes: SetTransformChang...

25 Loka 202524min