blink::GraphicsContext
Blink28610 Okt 2025

blink::GraphicsContext

immediate drawing API that records to a display list.

Painters for layout objects use GraphicsContext to “draw”—but in modern Blink those calls get recorded into a display list (PaintRecord) backed by Skia commands. This recording is scoped and batched between BeginRecording(...)/EndRecording(). (Chromium Git Repositories)

Key methods (how display items get their pixels)

  • Recording: BeginRecording(const FloatRect&) → sk_sp<PaintRecord> EndRecording() — wraps a run of drawing commands for later replay. (Chromium Git Repositories)

  • Draw ops (representative): DrawRect, DrawImage(...), DrawText(...), BeginLayer/EndLayer — the stuff that becomes Skia ops inside display items. (Chromium Git Repositories)

Important fields

  • cc::PaintCanvas* canvas_ (owned by recorder), PaintRecorder paint_recorder_ — actual recording guts;

  • float device_scale_factor_, state stacks/flags — needed for correct pixel snapping/appearance. (Chromium Git Repositories)

Hands off to: PaintController, which packages these recorded ops into chunks/items.


Avsnitt(392)

Blink’s Core Overflow Geometry: Clipping, Visual, and Scrollable Rectangles

Blink’s Core Overflow Geometry: Clipping, Visual, and Scrollable Rectangles

The provided text explains Blink’s core overflow geometry system, which uses three specialized rectangles to manage how web content extends beyond its defined boundaries. The OverflowClipRect acts as ...

18 Jan 30min

Debian Symbolic Links

Debian Symbolic Links

Symbolic links are filesystem objects that serve as pointers to other files or directories, providing a flexible way to organize data without duplicating it. Unlike hard links, which share the same un...

18 Jan 37min

3 ViewTransitionStyleTracker: The Mechanics of Element Capture and Naming

3 ViewTransitionStyleTracker: The Mechanics of Element Capture and Naming

The provided text describes the ViewTransitionStyleTracker, a core component within the Blink rendering engine that manages how elements are captured and animated during a web transition. It functions...

18 Jan 24min

Mastering CSS Containment and Performance Optimization

Mastering CSS Containment and Performance Optimization

The provided text explores CSS Containment, a performance-oriented web feature that allows developers to isolate specific DOM subtrees to optimize browser rendering. By using the contain property, aut...

18 Jan 31min

2 ViewTransition State Machine: Lifecycle and Orchestration

2 ViewTransition State Machine: Lifecycle and Orchestration

The provided text explains the internal state machine that manages ViewTransitions within the Blink rendering engine, detailing how it orchestrates smooth visual shifts during DOM updates. This mechan...

17 Jan 32min

overflow-clip-margin in CSS and the Blink Engine

overflow-clip-margin in CSS and the Blink Engine

The provided text explains the CSS overflow-clip-margin property, a tool that allows developers to expand the clipping boundary of an element beyond its standard boxes. By utilizing this feature along...

16 Jan 36min

1 Blink View Transition SPA: DOM Entry Points Deep Dive

1 Blink View Transition SPA: DOM Entry Points Deep Dive

This technical documentation describes the internal architecture of the View Transition API within Google’s Blink rendering engine. The system relies on the ViewTransitionSupplement class to manage pe...

15 Jan 32min

CSS Box Model in Blink: Architecture of Layout and Paint

CSS Box Model in Blink: Architecture of Layout and Paint

The provided text describes the Blink rendering engine's implementation of the CSS box model, detailing how digital elements are structured, positioned, and rendered. It explains the transition from t...

15 Jan 52min

Populärt inom Teknik

uppgang-och-fall
market-makers
elbilsveckan
natets-morka-sida
rss-elektrikerpodden
gubbar-som-tjotar-om-bilar
skogsforum-podcast
rss-laddstationen-med-elbilen-i-sverige
bilar-med-sladd
rss-technokratin
rss-uppgang-och-fall
bli-saker-podden
rss-it-sakerhetspodden
developers-mer-an-bara-kod
bosse-bildoktorn-och-hasse-p
rss-sakerhetspodcasten
rss-kack-tech-podcast
rss-en-ai-till-kaffet
rss-sogeti-sweden-podcasts
rss-milpodden