gpui-ce 0.3.0

A community fork of Zed's GPU-accelerated UI framework
Documentation 
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use derive_more::{Add, FromStr, Sub};
use serde::{Deserialize, Serialize};
use std::{
    fmt::{Debug, Display},
    hash::{Hash, Hasher},
};

/// The weight of a font, from [`FontWeight::THIN`] (100) to [`FontWeight::BLACK`] (900).
///
/// Weight selects how thick the strokes of a face are. [`FontWeight::NORMAL`]
/// (400) is the default, and [`FontWeight::BOLD`] (700) is what [`Font::bold`](crate::Font::bold)
/// sets. The value is a plain `f32`, so you can use values between the named
/// constants when the font has faces for them.
///
/// # Examples
///
/// ```
/// # use gpui::{FontWeight, font};
/// let heading = font("Lilex").bold();
/// assert_eq!(heading.weight, FontWeight::BOLD);
/// assert_eq!(FontWeight::default(), FontWeight::NORMAL);
/// ```
#[derive(Clone, Copy, Debug, PartialEq, PartialOrd, Serialize, Deserialize, Add, Sub, FromStr)]
#[serde(transparent)]
pub struct FontWeight(pub f32);

impl Display for FontWeight {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "{}", self.0)
    }
}

impl From<f32> for FontWeight {
    fn from(weight: f32) -> Self {
        FontWeight(weight)
    }
}

impl Default for FontWeight {
    #[inline]
    fn default() -> FontWeight {
        FontWeight::NORMAL
    }
}

impl Hash for FontWeight {
    fn hash<H: Hasher>(&self, state: &mut H) {
        state.write_u32(u32::from_be_bytes(self.0.to_be_bytes()));
    }
}

impl Eq for FontWeight {}

impl FontWeight {
    /// Thin weight (100), the thinnest value.
    pub const THIN: FontWeight = FontWeight(100.0);
    /// Extra light weight (200).
    pub const EXTRA_LIGHT: FontWeight = FontWeight(200.0);
    /// Light weight (300).
    pub const LIGHT: FontWeight = FontWeight(300.0);
    /// Normal (400).
    pub const NORMAL: FontWeight = FontWeight(400.0);
    /// Medium weight (500, higher than normal).
    pub const MEDIUM: FontWeight = FontWeight(500.0);
    /// Semibold weight (600).
    pub const SEMIBOLD: FontWeight = FontWeight(600.0);
    /// Bold weight (700).
    pub const BOLD: FontWeight = FontWeight(700.0);
    /// Extra-bold weight (800).
    pub const EXTRA_BOLD: FontWeight = FontWeight(800.0);
    /// Black weight (900), the thickest value.
    pub const BLACK: FontWeight = FontWeight(900.0);

    /// All of the font weights, in order from thinnest to thickest.
    pub const ALL: [FontWeight; 9] = [
        Self::THIN,
        Self::EXTRA_LIGHT,
        Self::LIGHT,
        Self::NORMAL,
        Self::MEDIUM,
        Self::SEMIBOLD,
        Self::BOLD,
        Self::EXTRA_BOLD,
        Self::BLACK,
    ];
}

impl schemars::JsonSchema for FontWeight {
    fn schema_name() -> std::borrow::Cow<'static, str> {
        "FontWeight".into()
    }

    fn json_schema(_: &mut schemars::SchemaGenerator) -> schemars::Schema {
        use schemars::json_schema;
        json_schema!({
            "type": "number",
            "minimum": Self::THIN,
            "maximum": Self::BLACK,
            "default": Self::default(),
            "description": "Font weight value between 100 (thin) and 900 (black)"
        })
    }
}