Expand description
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§
pub use zeno;
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.
- Bitmap
Strike - Collection of bitmaps of a specific size and format.
- Cache
Key - Uniquely generated value for identifying and caching fonts.
- Charmap
- Maps characters to nominal glyph identifiers.
- Color
Palette - Collection of colors.
- Feature
- Typographic rule that produces modifications to a sequence of glyphs.
- Font
Data Ref - Reference to the content of a font file.
- FontRef
- Reference to a font.
- Glyph
Metrics - Glyph advances, side bearings and vertical origins.
- Instance
- Named instance in a variable font.
- Localized
String - Represents a single localized string in a font.
- Metrics
- Global font metrics.
- Oblique
Angle - 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.
- Writing
System - Script, language and associated typographic features available in a font.
Enums§
- Action
- Modification performed by a feature.
- String
Id - 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§
- Table
Provider - Source that can provide table data by tag.
Functions§
- tag_
from_ bytes - Creates a tag from four bytes.
- tag_
from_ str_ lossy - Creates a tag from the first four bytes of a string, inserting spaces for any missing bytes.
Type Aliases§
- GlyphId
- Glyph identifier.
- Normalized
Coord - Normalized variation coordinate in 2.14 fixed point format.
- Tag
- Four byte tag value.