Struct EmbeddedFont 

pub struct EmbeddedFont {
    pub name: String,
    pub ascender: i32,
    pub descender: i32,
    pub cap_height: i32,
    pub x_height: i32,
    pub bbox: (i32, i32, i32, i32),
    pub flags: u32,
    pub stem_v: i16,
    pub italic_angle: f32,
    /* private fields */
}

Embedded TrueType font for PDF generation.

Contains parsed font data, subsetter, and encoder for generating CIDFont dictionaries and ToUnicode CMaps.

Fields

name: String

Font name (PostScript name or user-provided)

ascender: i32

Font ascender value

descender: i32

Font descender value

cap_height: i32

Cap height (height of capital letters)

x_height: i32

x-height (height of lowercase x)

bbox: (i32, i32, i32, i32)

Font bounding box (llx, lly, urx, ury)

flags: u32

Font flags for PDF

stem_v: i16

Stem vertical width

italic_angle: f32

Italic angle in degrees

Implementations

impl EmbeddedFont

pub fn from_data(name: Option<String>, data: Vec<u8>) -> Result<Self, String>

Create an embedded font from raw TTF/OTF data.

Arguments

• name - Font name to use (if None, uses PostScript name from font)
• data - Raw TTF/OTF file data

pub fn from_file(path: impl AsRef<Path>) -> Result<Self, String>

Load an embedded font from a file.

pub fn glyph_id(&self, codepoint: u32) -> Option<u16>

Get the glyph ID for a Unicode codepoint.

pub fn glyph_width(&self, gid: u16) -> u16

Get the width of a glyph in 1/1000 em units.

pub fn char_width(&self, codepoint: u32) -> u16

Get the width of a character in 1/1000 em units.

pub fn text_width(&self, text: &str, font_size: f32) -> f32

Calculate text width in points at the given font size.

pub fn use_string(&mut self, text: &str)

Record that a string is being used (for subsetting).

pub fn encode_string(&mut self, text: &str) -> String

Encode a string for use in PDF content stream (Identity-H encoding).

Returns a hex string like “<00410042>” where each 4-digit hex is a glyph ID.

pub fn subset_name(&mut self) -> &str

Get the subset font name (generates tag if needed).

pub fn font_data(&self) -> &[u8]

Get the raw font data for embedding.

pub fn subset_stats(&self) -> (usize, usize)

Get subset statistics.

pub fn is_used(&self) -> bool

Check if any text has been used with this font.

pub fn generate_widths_array(&self) -> String

Generate the CID widths array for the W entry.

pub fn generate_tounicode_cmap(&self) -> String

Generate the ToUnicode CMap for text extraction.

Trait Implementations

impl Debug for EmbeddedFont

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

Formats the value using the given formatter.