Struct FontCollection 

pub struct FontCollection { /* private fields */ }

Faces plus the sources that can find more — Skia’s FontCollection (skparagraph FontCollection.h: the asset/dynamic/default SkFontMgrs live INSIDE the collection, and findTypefaces/defaultFallback are its methods). Shaping consults this at every miss; what no source can answer accumulates as the demand a host fetches asynchronously (Flutter web’s _unprocessedCodePoints).

Implementations

impl FontCollection

pub fn new() -> FontCollection

pub fn faces(&self) -> &FaceSet

The faces resolved so far — what a built paragraph snapshots.

pub fn register(&mut self, family: &str, bytes: Vec<u8>) -> Option<FontId>

Registers bytes under a family (Skia registerTypeface; Flutter FontLoader.load). Host-facing: the other half of the async loop.

pub fn add(&mut self, font: Font) -> FontId

pub fn add_fallback(&mut self, id: FontId)

pub fn get(&self, id: FontId) -> &Font

pub fn len(&self) -> usize

pub fn family(&self, name: &str) -> Option<FontId>

pub fn add_source(&mut self, source: impl FontSource + 'static)

Adds a source consulted on a miss: the OS database, a downloader’s already-fetched cache, anything.

pub fn add_boxed_source(&mut self, source: Box<dyn FontSource>)

add_source for an already-boxed source — what a platform hands the framework through a trait object.

pub fn is_empty(&self) -> bool

pub fn adopt_faces(&mut self, faces: FaceSet)

Replaces the faces with a set grown out of band (a host that answered a demand itself — FaceSet::grown_by).

pub fn take_unanswered(&mut self) -> FontDemand

Takes the misses no source could answer — the host’s cue to fetch (and later register, which invalidates the text that wanted them). Draining is the caller’s; nothing here is async.

Trait Implementations

impl Default for FontCollection

fn default() -> FontCollection

Returns the “default value” for a type.