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Font introspection, complex text shaping and glyph rendering.

For a comprehensive list of features provided by this crate, please check out the readme on GitHub.

§Note

This is a low level library focusing on implementations of OpenType and various related Unicode specifications for building high quality, high performance text layout and rendering components with minimal overhead.

If you’re looking for something higher level, please stay tuned– work is in progress.

§Usage

The primary currency in this crate is the FontRef struct so you’ll want to start there to learn how to construct and use fonts.

Documentation for shaping and scaling is provided in the respective modules.

Re-exports§

Modules§

  • iter
    Collection of various iterators over metadata contained in a font.
  • proxy
    Proxies used to efficiently rematerialize metadata.
  • scale
    Scaling, hinting and rasterization of visual glyph representations.
  • shape
    Mapping complex text to a sequence of positioned glyphs.
  • text
    Character properties and textual analysis.

Structs§

  • Attributes
    Primary attributes for font classification: stretch, weight and style.
  • BitmapStrike
    Collection of bitmaps of a specific size and format.
  • CacheKey
    Uniquely generated value for identifying and caching fonts.
  • Charmap
    Maps characters to nominal glyph identifiers.
  • ColorPalette
    Collection of colors.
  • Feature
    Typographic rule that produces modifications to a sequence of glyphs.
  • FontDataRef
    Reference to the content of a font file.
  • FontRef
    Reference to a font.
  • GlyphMetrics
    Glyph advances, side bearings and vertical origins.
  • Instance
    Named instance in a variable font.
  • LocalizedString
    Represents a single localized string in a font.
  • Metrics
    Global font metrics.
  • ObliqueAngle
    Angle of an oblique style in degrees from -90 to 90.
  • Setting
    Setting combining a tag and a value for features and variations.
  • Stretch
    Visual width of a font– a relative change from the normal aspect ratio.
  • Synthesis
    Synthesis suggestions for mismatched font attributes.
  • Variation
    Axis of variation in a variable font.
  • Weight
    Visual weight class of a font on a scale from 1 to 1000.
  • WritingSystem
    Script, language and associated typographic features available in a font.

Enums§

  • Action
    Modification performed by a feature.
  • StringId
    Identifier for well-known localized strings in a font.
  • Style
    Visual style or ‘slope’ of a font.
  • Usability
    Theme of a palette with respect to background color.

Traits§

Functions§

Type Aliases§