ddidderr
fc7bb5c025
Ports the rest of ZIG/src/font for the freetype/fontconfig/harfbuzz backend: face loading and rasterization (synthetic bold/italic, color emoji bitmaps, glyph constraints for nerd font icons), fontconfig discovery, DeferredFace, Collection, CodepointResolver, CodepointMap, SharedGrid, opentype table parsers, the nerd font attribute table, and the harfbuzz shaper with feature parsing and shaping cache. Embedded fonts (JetBrains Mono 2.304 variable, Symbols Nerd Font 3.4.0, Noto emoji) and the test fonts from Ghostty live in res/ with their OFL/ MIT licenses. The crate opts into unsafe_code = "deny"; FFI is confined to ft.rs, fontconfig.rs and hb.rs with SAFETY comments. Glyph resampling uses an stb-style resampler that is not bit-identical to stb. Deferred to the next font pass (needs ghostty-terminal/config): shaper/run.zig, SharedGridSet.zig and the 23 terminal-driven shaper tests. Config-facing types are mirrored locally in config_types.rs. Test Plan: - cargo test -p ghostty-font (139 tests)
83 lines
2.1 KiB
Rust
83 lines
2.1 KiB
Rust
//! Font engine: metrics, atlas, sprite font, faces (FreeType), discovery
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//! (fontconfig), collections, codepoint resolution, shaping (HarfBuzz) and
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//! the shared glyph grid. Port of `ZIG/src/font/` for the Linux backend
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//! (`fontconfig_freetype`).
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#![cfg_attr(test, allow(clippy::unwrap_used))]
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pub mod atlas;
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pub mod backend;
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pub mod codepoint_map;
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pub mod codepoint_resolver;
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pub mod collection;
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pub mod config_types;
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pub mod deferred_face;
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pub mod discovery;
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pub mod embedded;
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pub mod face;
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pub mod fontconfig;
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pub mod glyph;
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pub mod library;
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pub mod metrics;
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pub mod nerd_font_attributes;
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pub mod opentype;
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pub mod shape;
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pub mod shaper;
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pub mod shared_grid;
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pub mod sprite;
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pub use atlas::Atlas;
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pub use backend::{Backend, OPTIONS as options};
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pub use codepoint_map::CodepointMap;
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pub use codepoint_resolver::CodepointResolver;
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pub use collection::Collection;
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pub use deferred_face::DeferredFace;
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pub use discovery::{Descriptor, Discover};
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pub use face::Face;
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pub use glyph::Glyph;
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pub use library::Library;
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pub use metrics::Metrics;
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pub use shared_grid::SharedGrid;
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pub use sprite::{Face as SpriteFace, Sprite};
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/// The styles that a family can take.
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#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord)]
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#[repr(u8)]
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pub enum Style {
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Regular = 0,
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Bold = 1,
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Italic = 2,
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BoldItalic = 3,
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}
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impl Style {
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/// All styles, in discriminant order (Zig: `std.meta.fields(Style)`).
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pub const ALL: [Style; 4] = [
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Style::Regular,
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Style::Bold,
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Style::Italic,
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Style::BoldItalic,
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];
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}
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/// The presentation for an emoji.
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#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
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pub enum Presentation {
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/// U+FE0E
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Text = 0,
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/// U+FE0F
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Emoji = 1,
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}
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/// A FontIndex that can be used to use the sprite font directly.
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pub const SPRITE_INDEX: collection::Index =
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collection::Index::init_special(collection::Special::Sprite);
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/// The default font size adjustment we use when loading fallback fonts.
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///
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/// TODO: Add user configuration for this instead of hard-coding it.
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pub const DEFAULT_FALLBACK_ADJUSTMENT: collection::SizeAdjustment =
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collection::SizeAdjustment::IcWidth;
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