cc Transform and Scroll Trees
Blink28628 Syys 2025

cc Transform and Scroll Trees

The source text details the architecture of Chromium's compositor, focusing on the tandem operation of two critical data structures: the Transform Tree and the Scroll Tree. The Transform Tree manages visual coordinate space transformations, including CSS transforms and scroll offsets, with each TransformNode calculating its final position relative to its parent using local matrices and the scroll translation. In parallel, the Scroll Tree, composed of ScrollNodes, handles the logical state of scrollable elements, defining constraints like scrollable bounds, allowed directions, and scroll chaining behavior. Crucially, the sources explain that the two trees are linked via a shared ElementId and that while the Scroll Tree determines how a scroll should happen (bounds and policy), the Transform Tree executes the change by holding and applying the live scroll_offset to visually move the layer content, enabling smooth, composite-threaded scrolling.

Jaksot(392)

Blink Codebase: Deeper Classes and Components

Blink Codebase: Deeper Classes and Components

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Blink Codebase: Deeper Classes and Components

Blink Codebase: Deeper Classes and Components

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Blink Engine Key Classes 3

Blink Engine Key Classes 3

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Blink Engine Key Classes 2

Blink Engine Key Classes 2

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Blink Core: Architecture and Component Overview

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The provided sources offer a comprehensive overview of Blink's core architecture and components, primarily focusing on how the engine processes and renders web content. They explain fundamental concep...

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Blink Web Development: A Comprehensive Guide

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The provided text outlines the scope of a six-hour audio lecture designed for C++ developers entering the Blink web development team. This lecture will thoroughly cover Blink's architectural design an...

17 Elo 202533min

JavaScript for the C++ Developer: A Deep Dive

JavaScript for the C++ Developer: A Deep Dive

This document outlines the scope of a multi-part lecture series designed for C++ developers transitioning to JavaScript. The series promises in-depth comparisonsbetween the two languages, covering run...

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Hazard Pointers: Lock-Free Memory Reclamation in C++

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14 Elo 20251h 27min