Struct FaceSet 

pub struct FaceSet { /* private fields */ }

The engine’s face roster, in FaceId order. The set mirrors the bundled sovereign default (§11.1): CM regular/italic/bold/bold-italic, CM Typewriter, a sans face, and the math-symbol coverage face.

Implementations

impl FaceSet

pub fn from_fonts(fonts: Vec<Font>) -> Self

Build a face set from parsed fonts, in FaceId order: regular, italic, bold, bold-italic, typewriter, sans, symbols.

pub fn bundled() -> Result<Self, FontError>

The bundled sovereign default: the four CM faces, CM Typewriter, IBM Plex Sans, and the Noto math-symbol subset.

Errors

Propagates fmd_font::FontError if a bundled face fails to parse (which would be a build corruption, not a runtime condition).

pub fn font(&self, id: FaceId) -> Option<&Font>

The font behind a face id, if present.

pub fn len(&self) -> usize

Number of faces in the roster.

pub fn is_empty(&self) -> bool

True when the roster is empty.

pub fn resolve(&self, ch: char, prefer: &[FaceId]) -> Option<(FaceId, u16)>

Resolve a character against a preference chain, falling back across the whole roster, then through the documented glyph alternates. Returns the face and glyph id, or None when nothing maps it.