sugarloaf 0.3.7

Sugarloaf is Rio rendering engine, designed to be multiplatform. It is based on WebGPU, Rust library for Desktops and WebAssembly for Web (JavaScript). This project is created and maintained for Rio terminal purposes but feel free to use it.
Documentation 
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use crate::font::DEFAULT_FONT_FAMILY;
use serde::{Deserialize, Serialize};

#[derive(Debug, Default, Serialize, Deserialize, PartialEq, Clone)]
pub enum SugarloafFontStyle {
    #[default]
    #[serde(alias = "normal")]
    Normal,
    #[serde(alias = "italic")]
    Italic,
}

#[derive(Debug, Default, Serialize, Deserialize, PartialEq, Clone)]
pub enum SugarloafFontWidth {
    UltraCondensed,
    ExtraCondensed,
    Condensed,
    SemiCondensed,
    #[default]
    Normal,
    SemiExpanded,
    Expanded,
    ExtraExpanded,
    UltraExpanded,
}

#[derive(Debug, Serialize, Deserialize, PartialEq, Clone)]
pub struct SugarloafFont {
    #[serde(default = "default_font_family")]
    pub family: String,
    #[serde(default = "Option::default")]
    pub weight: Option<u16>,
    #[serde(default = "SugarloafFontStyle::default")]
    pub style: SugarloafFontStyle,
    #[serde(default = "Option::default")]
    pub width: Option<SugarloafFontWidth>,
}

impl Default for SugarloafFont {
    fn default() -> Self {
        Self {
            family: default_font_family(),
            weight: None,
            style: SugarloafFontStyle::Normal,
            width: None,
        }
    }
}

impl SugarloafFont {
    #[inline]
    pub fn is_default_family(&self) -> bool {
        let current = self.family.replace(' ', "").trim().to_lowercase();
        current == default_font_family()
    }
}

#[inline]
pub fn default_font_size() -> f32 {
    14.
}

#[inline]
pub fn default_bool_true() -> bool {
    true
}

#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
pub struct SymbolMap {
    pub start: String,
    pub end: String,
    #[serde(rename = "font-family")]
    pub font_family: String,
}

fn default_font_family() -> String {
    DEFAULT_FONT_FAMILY.to_string()
}

pub fn default_font_regular() -> SugarloafFont {
    SugarloafFont {
        family: default_font_family(),
        weight: Some(400),
        style: SugarloafFontStyle::Normal,
        width: None,
    }
}

pub fn default_font_bold() -> SugarloafFont {
    SugarloafFont {
        family: default_font_family(),
        weight: Some(800),
        style: SugarloafFontStyle::Normal,
        width: None,
    }
}

pub fn default_font_italic() -> SugarloafFont {
    SugarloafFont {
        family: default_font_family(),
        weight: Some(300),
        style: SugarloafFontStyle::Italic,
        width: None,
    }
}

pub fn default_font_bold_italic() -> SugarloafFont {
    SugarloafFont {
        family: default_font_family(),
        weight: Some(800),
        style: SugarloafFontStyle::Italic,
        width: None,
    }
}

#[derive(Debug, Serialize, Deserialize, PartialEq, Clone)]
pub struct SugarloafFonts {
    #[serde(default = "default_font_size")]
    pub size: f32,
    #[serde(default = "default_bool_true")]
    pub hinting: bool,
    #[serde(default = "Option::default")]
    pub features: Option<Vec<String>>,
    #[serde(default = "Option::default")]
    pub family: Option<String>,
    #[serde(default = "default_font_regular")]
    pub regular: SugarloafFont,
    #[serde(default = "default_font_bold")]
    pub bold: SugarloafFont,
    #[serde(default = "default_font_bold_italic", rename = "bold-italic")]
    pub bold_italic: SugarloafFont,
    #[serde(default = "default_font_italic")]
    pub italic: SugarloafFont,
    #[serde(default = "Option::default")]
    pub emoji: Option<SugarloafFont>,
    #[serde(default = "Vec::default")]
    pub extras: Vec<SugarloafFont>,
    #[serde(default = "default_bool_true", rename = "use-drawable-chars")]
    pub use_drawable_chars: bool,
    #[serde(default = "Option::default", rename = "symbol-map")]
    pub symbol_map: Option<Vec<SymbolMap>>,
    #[serde(default = "bool::default", rename = "disable-warnings-not-found")]
    pub disable_warnings_not_found: bool,
    #[serde(default = "Option::default", rename = "additional-dirs")]
    pub additional_dirs: Option<Vec<String>>,
}

pub fn parse_unicode(input: &str) -> Option<char> {
    if let Ok(unicode) = u32::from_str_radix(input, 16) {
        if let Some(result) = char::from_u32(unicode) {
            return Some(result);
        }
    }

    None
}

impl Default for SugarloafFonts {
    fn default() -> SugarloafFonts {
        SugarloafFonts {
            features: None,
            hinting: true,
            size: default_font_size(),
            family: None,
            emoji: None,
            regular: default_font_regular(),
            bold: default_font_bold(),
            bold_italic: default_font_bold_italic(),
            italic: default_font_italic(),
            extras: vec![],
            use_drawable_chars: true,
            symbol_map: None,
            disable_warnings_not_found: false,
            additional_dirs: None,
        }
    }
}