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.

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Testing New CSS Features for the Web Platform

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Blink's Rendering Engine: A Forest of Trees

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Deep Dive: The CSS Flexbox Layout Model

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Fixing Chrome Bug 40786326: A Developer Walkthrough

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This resource provides a thorough guide to resolving Chrome Bug 40786326, which involves an inside marker trailing margin overshoot. The explanation will begin with the process of test creation, detai...

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Flexible Grid Systems: CSS Grid and Beyond

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This source provides an extensive overview of CSS Grid Layout, a powerful two-dimensional system for web design. It details Grid's specifications and capabilities, explaining how tracks are sized, ite...

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Blink's LayoutNG: Fragment Tree Generation Deep Dive

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This lecture outline provides an in-depth overview of LayoutNG's fragment tree generation within Blink, Google Chrome's rendering engine. It highlights the transition from the legacy layout system, wh...

5 Syys 20251h 2min

Blink's Layer Tree: Architecture, Rendering, and Performance

Blink's Layer Tree: Architecture, Rendering, and Performance

The provided text offers an in-depth look into Blink's layer tree, a crucial component in Chromium's rendering engine responsible for transforming web pages into pixels. It explains the architecture o...

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