Text shaping 🚀

- Shapes text with rustybuzz
- Font fallback with family list
- Tofus are shown in the first font

Co-Authored-By: Martin <mhaug@live.de>

1 files changed, 3 insertions, 38 deletions

diff --git a/src/env.rs b/src/env.rs
index 75e2853a..10230bbf 100644
--- a/src/env.rs
+++ b/src/env.rs
@@ -7,14 +7,15 @@ use std::fs;
 use std::io::Cursor;
 use std::path::{Path, PathBuf};
 
-use fontdock::{FaceFromVec, FaceId, FontSource};
+use fontdock::{FaceId, FontSource};
 use image::io::Reader as ImageReader;
 use image::{DynamicImage, GenericImageView, ImageFormat};
-use ttf_parser::Face;
 
 #[cfg(feature = "fs")]
 use fontdock::{FsIndex, FsSource};
 
+use crate::font::FaceBuf;
+
 /// Encapsulates all environment dependencies (fonts, resources).
 #[derive(Debug)]
 pub struct Env {
@@ -47,42 +48,6 @@ impl Env {
 /// A font loader that is backed by a dynamic source.
 pub type FontLoader = fontdock::FontLoader<Box<dyn FontSource<Face = FaceBuf>>>;
 
-/// An owned font face.
-pub struct FaceBuf {
-    data: Box<[u8]>,
-    face: Face<'static>,
-}
-
-impl FaceBuf {
-    /// Get a reference to the underlying face.
-    pub fn get(&self) -> &Face<'_> {
-        // We can't implement Deref because that would leak the internal 'static
-        // lifetime.
-        &self.face
-    }
-
-    /// The raw face data.
-    pub fn data(&self) -> &[u8] {
-        &self.data
-    }
-}
-
-impl FaceFromVec for FaceBuf {
-    fn from_vec(vec: Vec<u8>, i: u32) -> Option<Self> {
-        let data = vec.into_boxed_slice();
-
-        // SAFETY: The slices's location is stable in memory since we don't
-        //         touch it and it can't be touched from outside this type.
-        let slice: &'static [u8] =
-            unsafe { std::slice::from_raw_parts(data.as_ptr(), data.len()) };
-
-        Some(Self {
-            data,
-            face: Face::from_slice(slice, i).ok()?,
-        })
-    }
-}
-
 /// Simplify font loader construction from an [`FsIndex`].
 #[cfg(feature = "fs")]
 pub trait FsIndexExt {