Struct Glyphs 

pub struct Glyphs {
    shaper: Shaper,
    outlines: Outlines,
    inked: RefCell<HashMap<GlyphId, Option<Path2d>>>,
}

A typeface as the canvas draws it: the Shaper the kernel is called with, and a Path2d per glyph traced from the same face’s outlines.

Fields

shaper: Shaper

outlines: Outlines

inked: RefCell<HashMap<GlyphId, Option<Path2d>>>

Glyphs already traced into the browser’s own path type. None where the glyph draws nothing, so a space is looked up rather than retraced.

Implementations

impl Glyphs

pub fn new(typeface: FontChoice) -> Self

pub fn metrics(&self) -> Metrics

The vertical metrics both halves are stated in.

pub fn glyph_index(&self, chr: char) -> Option<GlyphId>

The glyph a face’s character map files chr under — the identity a layout that carries none falls back to.

pub fn path(&self, id: GlyphId) -> Option<Path2d>

id’s ink as a path in font units, Y up, or None where the glyph draws nothing.

Trait Implementations

impl TextLayout for Glyphs

fn typeface(&self) -> FontChoice

The typeface this engine lays text out in. The SVG export traces its outlines from that face’s own bytes, so an engine that answered for a different one would place one font’s glyphs at another’s pen positions.

fn layout(&self, text: &str, font: &Font, wrap: WorldPx) -> Layout

Lay text out in font, word-wrapped at wrap (WorldPx::UNBOUNDED for an unwrapped run). An exporter’s engine lays out at one pixel per point, so a resolution-independent format inherits no display’s DPI; the screen’s lays out at the display’s, so a mark recorded through it lands where the screen draws it.