Module fonts 

Original systemless bitmap fonts + Mac font-family routing.

Text renders by blitting pre-computed 8-bit coverage bitmaps out of the pixel_font modules — no runtime rasterization, no hinting decisions, no threshold knobs, no CLUT-closest-match. Every glyph pixel is exactly 0 or 255, so the downstream ShapeOp::Glyph partial-alpha branch never fires.

Each face is authored as hand-editable ASCII art in a pixel_font module and lowered to static glyph tables by const fn at compile time — no offline baker, no external font asset. The systemless faces are named after Australian native plants and stand in for the classic Mac families, which survive only as internal compatibility identifiers:

Mac font family (compat ID)	systemless face
Chicago	Jarrah
Geneva / Application / Helvetica	Kurrajong
Monaco / Courier	Mallee
New York / Times	Ironbark
Venice	Wattle
London	Karri
Cairo	Grevillea

All glyphs are original artwork authored for systemless; no third-party font data is used. See the “Font Data” section of the crate README for the full mapping and trademark / non-affiliation notice.

Re-exports

pub use self::heuristics::FONT_APPLICATION;

pub use self::heuristics::FONT_ATHENS;

pub use self::heuristics::FONT_CAIRO;

pub use self::heuristics::FONT_CHICAGO;

pub use self::heuristics::FONT_COURIER;

pub use self::heuristics::FONT_GENEVA;

pub use self::heuristics::FONT_HELVETICA;

pub use self::heuristics::FONT_LONDON;

pub use self::heuristics::FONT_LOSANGELES;

pub use self::heuristics::FONT_MOBILE;

pub use self::heuristics::FONT_MONACO;

pub use self::heuristics::FONT_NEWYORK;

pub use self::heuristics::FONT_SANFRAN;

pub use self::heuristics::FONT_SEATTLE;

pub use self::heuristics::FONT_SYMBOL;

pub use self::heuristics::FONT_TIMES;

pub use self::heuristics::FONT_TORONTO;

pub use self::heuristics::FONT_VENICE;

Modules

heuristics

Font-specific rendering heuristics

override_format

Stable on-disk schema for runtime font overrides.

pixel_font

Hand-authored bitmap fonts, decoded at compile time.

Structs

FontFace

One baked (font_id, size) face: metrics plus a slice of glyph descriptors and a shared coverage-byte buffer that the descriptors’ data_offset fields index into.

FontMetrics

Mac-style font metrics for a single (face, size) pair. Returned by GetFontInfo ($A88B) via get_font_metrics.

Glyph

Single-character bitmap descriptor: dimensions + offset into the shared data byte buffer. Coverage bytes are always exactly 0 or 255 — the ASCII-art source is const fn-decoded to a binary mask, so the ShapeOp::Glyph partial-alpha branch never fires.

ItalicFace

FontFace analogue with pre-baked italic strikes. Synthesised at draw time today via shear-blit (no italic strikes baked yet), but the type is in place so a future bake step can plug in.

MacRomanFace

FontFace analogue covering Mac Roman extended characters (codes 0x80..=0xFF). Currently has no entries — the built-in faces don’t populate these yet — but the type stays so the get_macroman_glyph API surface is stable.

MacRomanGlyph

Mac Roman extended glyph (code 0x80..=0xFF). Preserved for callers that expect the type; the built-in faces don’t populate Mac Roman extended tables yet so get_macroman_glyph returns None.

Constants

MONO_COVERAGE_THRESHOLD

Threshold at which coverage is treated as “fully set” when collapsing to a 1-bit destination. Baked glyph data is exclusively 0 or 255 so this is effectively inert for the glyph path; kept for shape-op callers that share the threshold constant.

Statics

FONT_NAMES

FONT_TABLE

Functions

font_id_for_name

font_name_for_id

get_font_face

get_font_face_or_default

get_font_face_scaled

get_italic_glyph

get_macroman_glyph