Function shape_text 

pub fn shape_text(font: Font, size: f32, text: &str) -> ShapedRun

Shape text against font.

Returns both glyph stream and advance width. Callers that will emit glyphs downstream should use this to avoid shaping twice.

Input is normalized through crate::nfc_text before shaping, so decomposed sequences are precomposed to Unicode NFC. Returned glyph cluster offsets are byte offsets into that normalized text, not necessarily the caller’s original string.

For Base14 faces, glyphs is empty (Base14 runs go out as WinAnsi-byte strings, not glyph IDs); only the width is computed.

Examples

use mos_fonts::{Base14Font, Font, shape_text};

let run = shape_text(Font::Base14(Base14Font::Helvetica), 10.0, "A");

assert!(run.glyphs.is_empty());
assert_eq!(run.advance_pt, 6.67);