Blink Main-Thread Scrolling – DOM, Layout, and Lifecycle
Blink28610 Nov 2025

Blink Main-Thread Scrolling – DOM, Layout, and Lifecycle

The source provides an extensive technical overview of how the Blink rendering engine handles scrolling, particularly focusing on the main-thread scrolling lifecycle. It explains that while modern browsers prioritize fast, asynchronous compositor-thread scrolling, the main thread is required for complex scenarios involving features like fixed backgrounds, non-passive event listeners, or layout updates on scroll. The document details the core architecture, including DOM APIs like scrollTo(), internal classes like ScrollableArea and LocalFrameView, and the interaction between scrolling and the style, layout, and paint phases of the rendering pipeline, noting that main-thread scrolls often skip layout but require paint invalidation for affected elements such as position:sticky. Finally, it covers how Blink manages scroll events, scroll anchoring, and synchronizes the final scroll position with the compositor for display.

Avsnitt(404)

The Mechanics of Inline Block and Fragmentation

The Mechanics of Inline Block and Fragmentation

These technical documents describe how Blink’s modern LayoutNG engine manages inline-block elements through a specialized physical fragment tree. Within this system, an inline-block is classified as a...

13 Feb 26min

Inside Chromium: The Architecture of DevTools

Inside Chromium: The Architecture of DevTools

The provided text explains the architecture and inner workings of Chromium DevTools, describing it as a client-server system that bridges a user-facing front-end with the browser’s back-end. This comm...

12 Feb 40min

Chromium Blink Printing Mode Analysis

Chromium Blink Printing Mode Analysis

These sources analyze how the Chromium Blink engine manages printing mode and its impact on layout behavior. The documentation clarifies that printing does not automatically disable a view's status as...

12 Feb 28min

Blink Fragment Propagation and Sticky Descendant Boundaries

Blink Fragment Propagation and Sticky Descendant Boundaries

The provided text explains how Blink's LayoutView manages sticky descendant propagation within the fragment tree. Under standard conditions, sticky elements bubble upward through ancestor fragments un...

12 Feb 29min

Oilpan: The Garbage Collector for Blink in Chrome

Oilpan: The Garbage Collector for Blink in Chrome

Oilpan is a specialized garbage collection system for the Blink rendering engine in Chrome, specifically designed to manage C++ objects and eliminate memory safety issues like use-after-free bugs. It ...

11 Feb 38min

Iframe Layout Coordination and Cooperative Sizing in Blink

Iframe Layout Coordination and Cooperative Sizing in Blink

The provided text describes the technical evolution of iframe layout coordination within Google's Blink rendering engine. Traditionally, browsers treat iframes as isolated boxes with a default size of...

9 Feb 37min

Chrome Scheduler: Frame Orchestrator

Chrome Scheduler: Frame Orchestrator

9 Feb 35min

Blink Rendering Engine: Frame, Document, and View Lifecycle

Blink Rendering Engine: Frame, Document, and View Lifecycle

In the Blink rendering engine, LocalFrame, LocalFrameView, and Document form a specialized triad that manages the structure and display of web content. The LocalFrame acts as the primary controller fo...

8 Feb 34min

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