cc::ScrollTree
Blink2862 Marras 2025

cc::ScrollTree

The source text provides an exhaustive technical overview of the Scroll Property Tree (cc::ScrollTree) within the Chromium compositor architecture, which is critical for enabling smooth, off-main-thread scrolling. It explains that the ScrollTree captures the hierarchy and properties of scrollable elements, utilizing individual ScrollNodes to store geometric data (like content and container bounds) and behavioral flags (such as whether scrolling is handled on the main thread or if scroll snapping is active). Furthermore, the text details how the ScrollTree works in close coordination with the Transform Tree to apply scroll-induced translations and how it manages the entire scrolling lifecycle, from input event hit-testing and scroll latching to handling overscroll and synchronizing scroll offsets back to the main thread (Blink) via commit mechanisms. This system ensures that complex features like pinch-zoom, sticky positioning, and scroll-linked animations operate correctly and efficiently on the compositor thread.

Jaksot(392)

blink::StyleEngine / style resolver

blink::StyleEngine / style resolver

Recalculates computed styles that changed since last frame (if any).

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blink::Page → blink::LocalFrame / LocalFrameView

blink::Page → blink::LocalFrame / LocalFrameView

The document’s frame & viewport; LocalFrameView is the scrollable root that triggers layout/paint when needed. provided source outlines the fundamental components of the Blink rendering engine, specif...

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blink::WebViewImpl

blink::WebViewImpl

The source text provides an in-depth explanation of the blink::WebViewImpl class within Chromium's Blink rendering engine, characterizing it as the central control point on the renderer's main thread ...

20 Syys 202539min

cc::LayerTreeHost in Chromium's Compositor

cc::LayerTreeHost in Chromium's Compositor

The source provides an extensive technical explanation of the cc::LayerTreeHost class, which acts as the central main-thread component in the Chromium compositor architecture. It details how this comp...

20 Syys 202537min

cc:: Scheduler / SchedulerStateMachine

cc:: Scheduler / SchedulerStateMachine

Drives the frame loop on the compositor thread (BeginFrame → Animate → Commit → Draw), deciding when to ask Blink for a new frame or to draw with existing state.

20 Syys 202548min

Chrome Interactions Team: Key Class Reference

Chrome Interactions Team: Key Class Reference

The sources provide an extensive reference guide detailing the key classes and infrastructure involved in handling user interactions—specifically scrolling, gestures, and input—within the Blink and Ch...

20 Syys 202553min

Essential Unix, Git, and Development Commands

Essential Unix, Git, and Development Commands

This comprehensive reference document provides an essential overview of commands used in a Unix-like environment, primarily focusing on Linux/macOS command-line operations and the specialized workflow...

20 Syys 202541min

Chromium and Blink Developer Command Reference

Chromium and Blink Developer Command Reference

The collection of sources provides a comprehensive guide to developing within the Chromium project, focusing heavily on command-line tools and workflows essential for engineers, particularly those wor...

19 Syys 202543min