ddidderr
7b408257c4
Completes the font engine port: - shaper/run.rs ports run.zig: the RunIterator over terminal rows that splits text runs at style/face boundaries, selection and cursor, handles graphemes and ligatures; Shaper::shape_run shapes a run. - shared_grid_set.rs ports SharedGridSet.zig: grids keyed by a config derived key, handed out as Arc<SharedGrid>. - Font-related types now have one canonical definition in ghostty-config (Variation, Descriptor, CodepointMap, metric modifiers, freetype load flags, synthetic style, shaping break) which the font crate re-exports. MetricModifier::apply_i32 now saturates to -i32::MAX like Zig. - The 23 terminal-driven harfbuzz shaper tests are ported, printing via Screen until Terminal lands. Test Plan: - cargo test -p ghostty-font (157 passed, 3 ignored - also skipped in Zig); Devanagari/Chakma/Bengali tests return early without system fonts - cargo test -p ghostty-config (255 passed)
85 lines
2.2 KiB
Rust
85 lines
2.2 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 shared_grid_set;
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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 shared_grid_set::SharedGridSet;
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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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