53 lines
2.1 KiB
Rust
53 lines
2.1 KiB
Rust
//! Fonts from the optional craft-fonts build input (<https://github.com/storytold/craft-fonts>).
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//!
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//! Built with `CRAFT_FONTS_DIR=<craft-fonts checkout>`, [`CRAFT_FONTS`] holds every font in its
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//! manifest (today the Japanese UI and document fonts); built without it, it is empty and Japanese
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//! text falls back to the installed system fonts. Release builds always set it. See `build.rs`
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//! and craftrules `standards/fonts.md`.
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/// A font from the optional craft-fonts build input (empty unless built with `CRAFT_FONTS_DIR`).
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pub struct CraftFont {
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pub family: &'static str,
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pub style: &'static str,
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/// ISO 15924 scripts the font is for, e.g. `"Jpan"`.
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pub scripts: &'static [&'static str],
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pub bytes: &'static [u8],
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}
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include!(concat!(env!("OUT_DIR"), "/craft_fonts.rs"));
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impl CraftFont {
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/// Is the font for Japanese text?
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pub fn is_japanese(&self) -> bool {
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self.scripts.contains(&"Jpan")
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}
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/// A serif (Mincho) family, for document text.
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pub fn is_mincho(&self) -> bool {
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self.family.contains("Mincho")
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}
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/// A sans (Gothic) family, for UI text.
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pub fn is_gothic(&self) -> bool {
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self.family.contains("Gothic")
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}
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/// A bold face.
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pub fn is_bold(&self) -> bool {
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crate::style_weight(self.style) >= 600.0
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}
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}
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/// The craft-fonts faces for Japanese text, best for document text first: Mincho (serif) families,
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/// then the others, regular weights before bold. Empty when built without craft-fonts.
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pub fn japanese_document_fonts() -> Vec<&'static CraftFont> {
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let mut v: Vec<&'static CraftFont> = CRAFT_FONTS.iter().filter(|f| f.is_japanese()).collect();
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v.sort_by_key(|f| (!f.is_mincho(), f.is_bold()));
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v
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}
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/// The craft-fonts faces for Japanese text, best for UI text first: Gothic (sans) families, then
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/// the others; `bold` puts bold faces before regular ones. Empty when built without craft-fonts.
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pub fn japanese_ui_fonts(bold: bool) -> Vec<&'static CraftFont> {
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let mut v: Vec<&'static CraftFont> = CRAFT_FONTS.iter().filter(|f| f.is_japanese()).collect();
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v.sort_by_key(|f| (!f.is_gothic(), f.is_bold() != bold));
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v
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}
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