zed/gpui/src/fonts.rs

use crate::json::json;
pub use font_kit::metrics::Metrics;
pub use font_kit::properties::{Properties, Stretch, Style, Weight};

use crate::json::ToJson;

#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
pub struct FontId(pub usize);

pub type GlyphId = u32;

impl ToJson for Properties {
    fn to_json(&self) -> crate::json::Value {
        json!({
            "style": self.style.to_json(),
            "weight": self.weight.to_json(),
            "stretch": self.stretch.to_json(),
        })
    }
}

impl ToJson for Style {
    fn to_json(&self) -> crate::json::Value {
        match self {
            Style::Normal => json!("normal"),
            Style::Italic => json!("italic"),
            Style::Oblique => json!("oblique"),
        }
    }
}

impl ToJson for Weight {
    fn to_json(&self) -> crate::json::Value {
        if self.0 == Weight::THIN.0 {
            json!("thin")
        } else if self.0 == Weight::EXTRA_LIGHT.0 {
            json!("extra light")
        } else if self.0 == Weight::LIGHT.0 {
            json!("light")
        } else if self.0 == Weight::NORMAL.0 {
            json!("normal")
        } else if self.0 == Weight::MEDIUM.0 {
            json!("medium")
        } else if self.0 == Weight::SEMIBOLD.0 {
            json!("semibold")
        } else if self.0 == Weight::BOLD.0 {
            json!("bold")
        } else if self.0 == Weight::EXTRA_BOLD.0 {
            json!("extra bold")
        } else if self.0 == Weight::BLACK.0 {
            json!("black")
        } else {
            json!(self.0)
        }
    }
}

impl ToJson for Stretch {
    fn to_json(&self) -> serde_json::Value {
        json!(self.0)
    }
}