diff options
Diffstat (limited to 'src/font.rs')
| -rw-r--r-- | src/font.rs | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/src/font.rs b/src/font.rs deleted file mode 100644 index e5718331..00000000 --- a/src/font.rs +++ /dev/null @@ -1,68 +0,0 @@ -//! Font handling. - -use fontdock::{ContainsChar, FaceFromVec, FontSource}; -use ttf_parser::Face; - -#[cfg(feature = "fs")] -use fontdock::fs::{FsIndex, FsSource}; - -/// 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()?, - }) - } -} - -impl ContainsChar for FaceBuf { - fn contains_char(&self, c: char) -> bool { - self.get().glyph_index(c).is_some() - } -} - -/// Simplify font loader construction from an [`FsIndex`]. -#[cfg(feature = "fs")] -pub trait FsIndexExt { - /// Create a font loader backed by a boxed [`FsSource`] which serves all - /// indexed font faces. - fn into_dynamic_loader(self) -> FontLoader; -} - -#[cfg(feature = "fs")] -impl FsIndexExt for FsIndex { - fn into_dynamic_loader(self) -> FontLoader { - let (files, descriptors) = self.into_vecs(); - FontLoader::new(Box::new(FsSource::new(files)), descriptors) - } -} |
