Struct ResolvedFont 

pub struct ResolvedFont {
    pub name: String,
    pub data: Vec<u8>,
    pub face_index: u32,
    pub units_per_em: u16,
    pub ascender: i16,
    pub descender: i16,
    pub pdf_widths: Option<(u16, Vec<u16>)>,
    pub pdf_encoding: Option<PdfSimpleEncoding>,
    pub pdf_source_font: Option<PdfSourceFont>,
}

A resolved font ready for use in PDF rendering.

Fields

name: String

PostScript name or family name.

data: Vec<u8>

Raw font data (TTF/OTF/CFF bytes).

face_index: u32

Font face index within a collection (TTC/OTC).

units_per_em: u16

Units per em from the font’s head table.

ascender: i16

Ascender in font units.

descender: i16

Descender in font units (negative).

pdf_widths: Option<(u16, Vec<u16>)>

PDF /Widths array for glyph metrics: (first_char_code, widths).

pdf_encoding: Option<PdfSimpleEncoding>

Optional /Encoding differences for the PDF width table.

pdf_source_font: Option<PdfSourceFont>

Existing simple-font object reused to preserve the PDF’s original metrics.

Implementations

impl ResolvedFont

pub fn measure_string(&self, text: &str, font_size: f64) -> f64

Measure the approximate width of a string in points at the given font size.

pub fn line_height(&self, font_size: f64) -> f64

Line height in points at the given font size.

pub fn ascender_pt(&self, font_size: f64) -> f64

Ascender in points at the given font size.

pub fn descender_pt(&self, font_size: f64) -> f64

Descender in points at the given font size (negative value).

pub fn pdf_glyph_widths(&self) -> (u16, Vec<u16>)

Generate a Unicode-indexed width table from PDF /Widths.

WHY: Custom encodings via /Differences are essential for correct glyph width mapping. Without this, widths are indexed by the wrong characters for fonts that deviate from WinAnsi.

SPEC: PDF spec §9.6.6.1 defines /Differences as a code-to-glyph-name override table layered on top of a base encoding.

LIMITATION: CID fonts (/Type0) use /W arrays and CMaps rather than simple-font /Widths; that path is not handled here.

pub fn cid_font_info(&self) -> Option<CidFontInfo>

Generate CID font data for Identity-H encoding.

Returns glyph widths indexed by GID and a GID→Unicode mapping for the ToUnicode CMap.

Trait Implementations

impl Clone for ResolvedFont

fn clone(&self) -> ResolvedFont

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ResolvedFont

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.