awaforge

pdfFontCidTyped

AGPL-3.0-onlyRelease 2L4

Typed CIDFont, CIDSystemInfo, /W glyph widths, and the predefined-CMap catalog — ISO 32000-2 §9.7.

Module pdfFontCidTyped | Source packages/front/office/pdf/src/extra/font-cid-typed.js | Deps pdfErrors, pdfParserObj | Worker-safe yes

Covers /CIDFontType0 and /CIDFontType2 (§9.7.4), /CIDSystemInfo (§9.7.3), /CIDToGIDMap (§9.7.4.3), /W /W2 /DW /DW2 (§9.7.4.3), and the frozen list of predefined CMaps (§9.7.5.2).

Resolve

const ext = runtime.resolve('pdfFontCidTyped');
// Returns: { typeCIDFont, typeCIDSystemInfo, decodeWidthsW, PREDEFINED_CMAPS }

API

Member Signature Returns
typeCIDFont (dict) => CIDFont Record for /Type /Font /Subtype /CIDFontType{0,2}.
typeCIDSystemInfo (dict) => { registry, ordering, supplement } §9.7.3.
decodeWidthsW (array) => Array<{ first, last, widths? , width? }> Expands /W runs.
PREDEFINED_CMAPS frozen catalog Map registry-ordering → list of CMap names.

Examples

Type a CIDFont

const cid = ext.typeCIDFont(doc._raw.resolve(cidFontRef));
cid.subtype;         // 'CIDFontType2'
cid.cidSystemInfo.registry; // 'Adobe'
cid.dw;              // 1000

Decode /W

ext.decodeWidthsW(arr);
// [ { first: 1, last: 3, widths: [500, 500, 500] }, { first: 10, last: 10, width: 600 } ]

Predefined CMap

ext.PREDEFINED_CMAPS['Adobe-GB1'].includes('GB-EUC-H'); // true

Errors

Code Class When
pdf/extra/cid-font/not-dict ParseError Argument is not a dictionary.
pdf/extra/cid-font/bad-type ParseError /Type present and not /Font.
pdf/extra/cid-font/bad-subtype ParseError /Subtype is not a CIDFontType.
pdf/extra/cid-font/missing-csi ParseError /CIDSystemInfo missing.
pdf/extra/cid-system-info/not-dict ParseError CIDSystemInfo is not a dictionary.
pdf/extra/cid-system-info/incomplete ParseError A required field is absent.
pdf/extra/cid-font/bad-w ParseError /W is not an array.
pdf/extra/cid-font/bad-w-c ParseError First value is not numeric.
pdf/extra/cid-font/bad-w-item ParseError Array item is not numeric.
pdf/extra/cid-font/bad-w-range ParseError Range form is malformed.

See also