blink::PaintController
Blink28610 Okt 2025

blink::PaintController

builds the display list + paint chunks and manages caching.

As painters call into GraphicsContext, they also drive a PaintController which groups drawing into display items and paint chunks (each keyed by the current property‑tree state). It also handles reuse of cached items to avoid repaint when nothing visually changed. Output is an immutable PaintArtifact. (Chromium Git Repositories)

Key fields

  • PaintArtifact* new_paint_artifact_ — being built for this frame;

  • PaintArtifact* old_paint_artifact_ — previous frame for cache matching;

  • PaintChunker paint_chunker_ — forms chunk boundaries based on property state;

  • PaintControllerPersistentData* persistent_data_ — holds prior artifact & subsequences. (Chromium Git Repositories)

Most important methods

  • UpdateCurrentPaintChunkProperties(const PropertyTreeStateOrAlias&) — starts/updates the current chunk when property state changes. (Chromium Git Repositories)

  • template <class T> CreateAndAppend(...) — appends a display item (records drawing op + metadata). (Chromium Git Repositories)

  • bool UseCachedItemIfPossible(...) — reuses prior items to skip repaints. (Chromium Git Repositories)

  • void BeginFrame(const void* frame) / FrameFirstPaint EndFrame(const void* frame) — delimit a painting pass for metrics + cache book‑keeping. (Chromium Git Repositories)

  • (Internals also maintain id→index maps to support O(1)/linear cache lookups.) (Chromium Git Repositories)

Hands off to: the PaintArtifact it produces.


Avsnitt(431)

Blink's IDL and Bindings: Connecting C++ to the Web Platform

Blink's IDL and Bindings: Connecting C++ to the Web Platform

The provided text explains Blink's Interface Definition Language (IDL) and its binding system, which serves as a crucial bridge between JavaScript and C++ within the Chromium rendering engine. It deta...

15 Sep 202547min

Blink's Intent to Ship: A Feature Launch Guide

Blink's Intent to Ship: A Feature Launch Guide

The provided source outlines Blink's "Intent to Ship" (I2S) process, the final stage for launching new features in the Chromium web browser. This crucial step involves a public announcement and reques...

15 Sep 202552min

Blink Origin Trials: Launching Web Features with Confidence

Blink Origin Trials: Launching Web Features with Confidence

The provided sources outline Chrome's Origin Trials, a crucial phase in the Blink feature launch process that allows new web features to be tested by real users on production sites. These trials serve...

15 Sep 202554min

Blink Developer Trials: Launching Web Platform Features

Blink Developer Trials: Launching Web Platform Features

The provided text details Google Chrome's Developer Trials process for launching new web platform features like HTML and CSS additions, which acts as a crucial mid-stage between prototyping and widesp...

15 Sep 202559min

Blink Feature Launch: Intent to Prototype Guide

Blink Feature Launch: Intent to Prototype Guide

The provided source outlines the Blink Feature Launch Process within Chromium, specifically focusing on the Intent to Prototype (I2P) stage for new web platform features. It details the purpose of the...

15 Sep 202556min

HTML5's Triumph: The Web's Defining Battle

HTML5's Triumph: The Web's Defining Battle

The provided text explores the historical struggle between two competing web standards in the 2000s: W3C’s XHTML 2 and the browser vendors’ HTML5. It details the technical and philosophical difference...

14 Sep 202540min

Crafting Technical Specifications: Normative Prose Explained

Crafting Technical Specifications: Normative Prose Explained

The provided text offers comprehensive guidance on crafting normative prose within technical specifications, distinguishing it from informative content which merely provides explanation. It emphasizes...

14 Sep 20251h 5min

Crafting Web Platform Explainers for Blink Features

Crafting Web Platform Explainers for Blink Features

The provided sources collectively offer a comprehensive guide to crafting effective web platform explainers, specifically within the context of Google's Blink team. They define an explainer as a livin...

14 Sep 202539min

Populärt inom Teknik

uppgang-och-fall
elbilsveckan
rss-elektrikerpodden
bilar-med-sladd
skogsforum-podcast
market-makers
natets-morka-sida
rss-veckans-ai
gubbar-som-tjotar-om-bilar
rss-technokratin
rss-laddstationen-med-elbilen-i-sverige
rss-it-sakerhetspodden
rss-uppgang-och-fall
har-vi-akt-till-mars-an
developers-mer-an-bara-kod
musikprodd-podden
ai-sweden-podcast
bosse-bildoktorn-och-hasse-p
rss-fabriken-2
rss-digitala-influencer-podden