Struct CidTrueTypePdfFont 

pub struct CidTrueTypePdfFont {

    pub data: Vec<u8>,
    pub default_width: f64,
    pub cid_widths: HashMap<u16, f64>,
    pub cmap: HashMap<u32, u16>,
    pub units_per_em: f64,
    pub identity_cid_to_gid: bool,
    pub substituted: bool,
    pub cid_to_gid_map: Option<Vec<u16>>,
    pub to_unicode: HashMap<u16, u32>,
    pub ordering: Vec<u8>,
    pub ucs2_encoding: bool,
    pub code_lengths: [u8; 256],
    pub code_to_cid: HashMap<u32, u32>,
    pub wmode: u8,
    pub dw2: [f64; 2],
    pub w2: HashMap<u16, [f64; 3]>,
}

CIDFontType2: TrueType outlines accessed by CID (2-byte char codes).

Fields

data: Vec<u8>

default_width: f64

Default glyph width (from /DW, in text space ÷1000).

cid_widths: HashMap<u16, f64>

CID → width mapping (from /W array, in text space ÷1000).

cmap: HashMap<u32, u16>

units_per_em: f64

identity_cid_to_gid: bool

If true, CID maps directly to GID (Identity CIDToGIDMap).

substituted: bool

If true, font data was loaded from the system (not embedded in PDF). For substituted fonts, CIDs are treated as Unicode and mapped via cmap.

cid_to_gid_map: Option<Vec<u16>>

Explicit CID-to-GID mapping from a CIDToGIDMap stream. Index = CID, value = GID. Takes priority over identity mapping.

to_unicode: HashMap<u16, u32>

CID → Unicode mapping from the Type 0 font’s /ToUnicode CMap. Used for substituted fonts to convert CID → Unicode → GID via cmap.

ordering: Vec<u8>

CIDSystemInfo /Ordering (e.g. b“Japan1“, b“GB1“) for CID→Unicode fallback.

ucs2_encoding: bool

If true, the encoding is UCS2-based (e.g. UniJIS-UCS2-H) and character codes are Unicode values that need mapping to CIDs for width lookup.

code_lengths: [u8; 256]

First-byte → code length table from the encoding CMap’s codespace ranges. Supports mixed-width encodings (e.g. 1-byte space + 2-byte CIDs).

code_to_cid: HashMap<u32, u32>

Code → CID mapping from the encoding CMap (empty = identity).

wmode: u8

Writing mode: 0 = horizontal, 1 = vertical.

dw2: [f64; 2]

Default vertical metrics [v_y, w1] from /DW2 (default: [880, -1000]). v_y = vertical origin offset, w1 = vertical advance width.

w2: HashMap<u16, [f64; 3]>

Per-CID vertical metrics from /W2: CID → (w1, v_x, v_y). w1 = vertical advance, v_x/v_y = position vector components (in 1/1000 em).