132 lines
4.3 KiB
Rust
132 lines
4.3 KiB
Rust
pub mod cache;
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pub mod editor;
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pub mod paragraph;
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pub use cache::Cache;
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pub use editor::Editor;
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pub use paragraph::Paragraph;
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pub use cosmic_text;
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use crate::core::font::{self, Font};
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use crate::core::text::Shaping;
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use crate::core::Size;
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use once_cell::sync::OnceCell;
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use std::borrow::Cow;
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use std::sync::{Arc, RwLock};
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pub fn font_system() -> &'static RwLock<FontSystem> {
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static FONT_SYSTEM: OnceCell<RwLock<FontSystem>> = OnceCell::new();
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FONT_SYSTEM.get_or_init(|| {
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RwLock::new(FontSystem {
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raw: cosmic_text::FontSystem::new_with_fonts(
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[cosmic_text::fontdb::Source::Binary(Arc::new(
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include_bytes!("../fonts/Iced-Icons.ttf").as_slice(),
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))]
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.into_iter(),
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),
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version: Version::default(),
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})
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})
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}
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#[allow(missing_debug_implementations)]
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pub struct FontSystem {
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raw: cosmic_text::FontSystem,
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version: Version,
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}
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impl FontSystem {
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pub fn raw(&mut self) -> &mut cosmic_text::FontSystem {
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&mut self.raw
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}
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pub fn load_font(&mut self, bytes: Cow<'static, [u8]>) {
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let _ = self.raw.db_mut().load_font_source(
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cosmic_text::fontdb::Source::Binary(Arc::new(bytes.into_owned())),
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);
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self.version = Version(self.version.0 + 1);
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}
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pub fn version(&self) -> Version {
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self.version
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}
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}
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#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Default)]
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pub struct Version(u32);
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pub fn measure(buffer: &cosmic_text::Buffer) -> Size {
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let (width, total_lines) = buffer
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.layout_runs()
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.fold((0.0, 0usize), |(width, total_lines), run| {
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(run.line_w.max(width), total_lines + 1)
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});
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Size::new(width, total_lines as f32 * buffer.metrics().line_height)
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}
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pub fn to_attributes(font: Font) -> cosmic_text::Attrs<'static> {
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cosmic_text::Attrs::new()
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.family(to_family(font.family))
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.weight(to_weight(font.weight))
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.stretch(to_stretch(font.stretch))
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.style(to_style(font.style))
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}
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fn to_family(family: font::Family) -> cosmic_text::Family<'static> {
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match family {
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font::Family::Name(name) => cosmic_text::Family::Name(name),
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font::Family::SansSerif => cosmic_text::Family::SansSerif,
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font::Family::Serif => cosmic_text::Family::Serif,
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font::Family::Cursive => cosmic_text::Family::Cursive,
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font::Family::Fantasy => cosmic_text::Family::Fantasy,
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font::Family::Monospace => cosmic_text::Family::Monospace,
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}
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}
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fn to_weight(weight: font::Weight) -> cosmic_text::Weight {
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match weight {
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font::Weight::Thin => cosmic_text::Weight::THIN,
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font::Weight::ExtraLight => cosmic_text::Weight::EXTRA_LIGHT,
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font::Weight::Light => cosmic_text::Weight::LIGHT,
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font::Weight::Normal => cosmic_text::Weight::NORMAL,
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font::Weight::Medium => cosmic_text::Weight::MEDIUM,
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font::Weight::Semibold => cosmic_text::Weight::SEMIBOLD,
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font::Weight::Bold => cosmic_text::Weight::BOLD,
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font::Weight::ExtraBold => cosmic_text::Weight::EXTRA_BOLD,
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font::Weight::Black => cosmic_text::Weight::BLACK,
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}
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}
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fn to_stretch(stretch: font::Stretch) -> cosmic_text::Stretch {
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match stretch {
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font::Stretch::UltraCondensed => cosmic_text::Stretch::UltraCondensed,
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font::Stretch::ExtraCondensed => cosmic_text::Stretch::ExtraCondensed,
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font::Stretch::Condensed => cosmic_text::Stretch::Condensed,
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font::Stretch::SemiCondensed => cosmic_text::Stretch::SemiCondensed,
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font::Stretch::Normal => cosmic_text::Stretch::Normal,
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font::Stretch::SemiExpanded => cosmic_text::Stretch::SemiExpanded,
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font::Stretch::Expanded => cosmic_text::Stretch::Expanded,
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font::Stretch::ExtraExpanded => cosmic_text::Stretch::ExtraExpanded,
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font::Stretch::UltraExpanded => cosmic_text::Stretch::UltraExpanded,
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}
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}
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fn to_style(style: font::Style) -> cosmic_text::Style {
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match style {
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font::Style::Normal => cosmic_text::Style::Normal,
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font::Style::Italic => cosmic_text::Style::Italic,
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font::Style::Oblique => cosmic_text::Style::Oblique,
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}
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}
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pub fn to_shaping(shaping: Shaping) -> cosmic_text::Shaping {
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match shaping {
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Shaping::Basic => cosmic_text::Shaping::Basic,
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Shaping::Advanced => cosmic_text::Shaping::Advanced,
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}
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}
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