skrifa/outline/glyf/hint/
cvt.rs

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1//! Control value table.
2
3use super::{cow_slice::CowSlice, error::HintErrorKind, F26Dot6};
4
5/// Backing store for the control value table.
6///
7/// This is just a wrapper for [`CowSlice`] that converts out of bounds
8/// accesses to appropriate errors.
9pub struct Cvt<'a>(CowSlice<'a>);
10
11impl Cvt<'_> {
12    pub fn get(&self, index: usize) -> Result<F26Dot6, HintErrorKind> {
13        self.0
14            .get(index)
15            .map(F26Dot6::from_bits)
16            .ok_or(HintErrorKind::InvalidCvtIndex(index))
17    }
18
19    pub fn set(&mut self, index: usize, value: F26Dot6) -> Result<(), HintErrorKind> {
20        self.0
21            .set(index, value.to_bits())
22            .ok_or(HintErrorKind::InvalidCvtIndex(index))
23    }
24
25    pub fn len(&self) -> usize {
26        self.0.len()
27    }
28}
29
30impl<'a> From<CowSlice<'a>> for Cvt<'a> {
31    fn from(value: CowSlice<'a>) -> Self {
32        Self(value)
33    }
34}
skrifa/outline/glyf/hint/cvt.rs

skrifa/outline/glyf/hint/
cvt.rs
