Chromium Compositor's CalculateDrawProperties: Scrolling and Overscroll
Blink2863 Okt 2025

Chromium Compositor's CalculateDrawProperties: Scrolling and Overscroll

The sources provide an extremely detailed, line-by-line breakdown of the Chromium compositor function CalculateDrawProperties, explaining how it prepares the active layer tree for rendering. A primary focus is on how scrolling and elastic overscroll are handled by updating property trees (transform, clip, and effect) to reflect user interaction. Specifically, the function prioritizes applying SyncedProperties, such as the page scale factor (zoom) and the elastic overscroll vector (the bounce effect), ensuring consistency across layer trees before property recomputation. The application of overscroll is platform-dependent, utilizing stretching on Android versus simple translation on non-Android platforms, and these effects are injected into a dedicated transform node that propagates the visual change to all descendant layers. Finally, the function determines visible layers, computes their final draw properties, and assembles the render surface list that the compositor will use to issue drawing commands.


Avsnitt(404)

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 Sep 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 Sep 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 Sep 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 Sep 202543min

Chrome Interaction Systems: Scrolling, Animations, and Input

Chrome Interaction Systems: Scrolling, Animations, and Input

The source material provides a detailed examination of Chrome’s architecture and how it manages user interactions like scrolling, animations, and input handling to ensure web pages feel smooth and res...

19 Sep 202526min

The History of the Web

The History of the Web

The source provides an extensive transcript from a YouTube video titled "The history of the web (Chrome University 2019)," featuring a presentation by Chris Wilson from Chrome for Developers. Wilson o...

19 Sep 202526min

Chromium Blink Remote Linux Development Workflow

Chromium Blink Remote Linux Development Workflow

The source provides a comprehensive guide for experienced C++ developers on setting up a development workflow for Chromium's Blink rendering engine, specifically focusing on the core component within ...

19 Sep 202542min

Blink Core Architecture: DOM, Style, Layout, and Frames

Blink Core Architecture: DOM, Style, Layout, and Frames

The source provides a detailed overview of the Blink Core Architecture within the Chromium renderer process, focusing on the fundamental components that implement Web Platform features. It thoroughly ...

19 Sep 202534min

Populärt inom Teknik

uppgang-och-fall
natets-morka-sida
elbilsveckan
bilar-med-sladd
rss-elektrikerpodden
market-makers
skogsforum-podcast
rss-veckans-ai
bosse-bildoktorn-och-hasse-p
rss-it-sakerhetspodden
bli-saker-podden
rss-laddstationen-med-elbilen-i-sverige
rss-technokratin
solcellskollens-podcast
cyber-chats-chill
rss-upplyst-entreprenordirektor
rss-racevecka
rss-en-ai-till-kaffet
rss-powerboat-sverige-podcast
rss-milpodden