Crate ab_glyph

source ·
Expand description

API for loading, scaling, positioning and rasterizing OpenType font glyphs.

Example

use ab_glyph::{point, Font, FontRef, Glyph};

let font = FontRef::try_from_slice(include_bytes!("../../dev/fonts/Exo2-Light.otf"))?;

// Get a glyph for 'q' with a scale & position.
let q_glyph: Glyph = font
    .glyph_id('q')
    .with_scale_and_position(24.0, point(100.0, 0.0));

// Draw it.
if let Some(q) = font.outline_glyph(q_glyph) {
    q.draw(|x, y, c| { /* draw pixel `(x, y)` with coverage: `c` */ });
}

Structs

  • CodepointIdIter
  • FontArc
    Font implementor that wraps another concrete Font + 'static type storing in an Arc.
  • FontRef
    Font data handle stored as a &[u8] + parsed data. See Font for more methods.
  • FontVec
    Font data handle stored in a Vec<u8> + parsed data. See Font for more methods.
  • Glyph
    A glyph with pixel scale & position.
  • GlyphId
    Glyph id.
  • GlyphImage
    A pre-rendered image of a glyph, usually used for emojis or other glyphs that can’t be represented only using an outline.
  • InvalidFont
    Invalid font data error.
  • Outline
    A “raw” collection of outline curves for a glyph, unscaled & unpositioned.
  • OutlinedGlyph
    A glyph that has been outlined at a scale & position.
  • PxScale
    Pixel scale.
  • PxScaleFactor
    2D scale factors for use with unscaled metrics.
  • PxScaleFont
    A Font and an associated pixel scale.
  • Rect
    A rectangle, with top-left corner at min, and bottom-right corner at max.
  • VariationAxis

Enums

Traits

  • Font
    Functionality required from font data.
  • ScaleFont
    A Font with an associated pixel scale. This can be used to provide pixel scale values for glyph advances, heights etc.
  • VariableFont
    Logic for variable fonts.

Functions

Type Definitions

  • Point
    An (x, y) coordinate. Point { x: f32, y: f32 }