Architecture of Scrolling in Chrome (Blink vs. CC Overview)
Blink28610 Marras 2025

Architecture of Scrolling in Chrome (Blink vs. CC Overview)

The source provides an extensive overview of the Chrome browser's scrolling architecture, detailing the division of labor between the Blink rendering engine (main thread) and the Chromium Compositor (CC). It explains that Blink manages the structure and definition of scrollable areas (ScrollableArea, ScrollManager), while the Compositor handles the actual visual movement via its separate thread for maximum performance, often called threaded scrolling. Critical to this system are Property Trees (specifically the Scroll Tree and Transform Tree) which the Compositor uses to efficiently apply scroll offsets to layers without needing main thread input, and the InputHandlerProxy which intelligently routes scroll events to either the fast Compositor path or the slower Blink path based on criteria like the presence of non-passive event listeners. Finally, the text describes the vital role of the commit lifecycle in synchronizing the actual scroll position between the independent threads to maintain visual and logical consistency.

Jaksot(404)

TypeScript for C++ Developers: A Deep Dive

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The provided texts describe various classes and components within the Blink rendering engine, offering insight into its internal architecture and functionalities. They explain how Blink manages CSS st...

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The provided texts describe various classes and components within the Blink rendering engine, detailing their definitions and functionalities. These documents cover how Blink manages CSS styling (Comp...

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Blink Engine Key Classes 3

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