font-index 0.1.3

Static index for system fonts
Documentation 
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use super::builder::{FontLibraryBuilder, MmapHint};
use super::index::StaticIndex;
use std::sync::{Arc, RwLock};

/// Indexed collection of fonts used during layout for font selection and
/// fallback.
#[derive(Clone)]
pub struct FontLibrary {
    pub(super) inner: Arc<Inner>,
}

impl FontLibrary {
    /// Creates builder for a font library.
    pub fn builder() -> FontLibraryBuilder {
        FontLibraryBuilder::default()
    }

    pub(super) fn new(index: StaticIndex) -> Self {
        Self {
            inner: Arc::new(Inner {
                index: RwLock::new(Arc::new(index)),
            }),
        }
    }
}

impl Default for FontLibrary {
    fn default() -> Self {
        Self::builder()
            .mmap(MmapHint::Threshold(1024 * 1024))
            .add_system_fonts()
            .add_user_fonts()
            .map_generic_families(true)
            .map_fallbacks(true)
            .build()
    }
}

pub struct Inner {
    pub index: RwLock<Arc<StaticIndex>>,
}