Class OtfParser

Parses OpenType font files (.otf) to extract metrics and glyph widths. Supports both CFF-based and TrueType-based OpenType fonts.

Note: OTF files share the same table structure as TTF for metrics, the main difference is the glyph outline format (CFF vs TrueType).

Implements

FontParser

Index

Constructors

Methods

getCharWidths getFontData getFontDescriptor getFontInfo isCFFBased parseCmap parseHmtx

Constructors

constructor

new OtfParser(fontData: ByteArray): OtfParser
Parameters
- fontData: ByteArray
Returns OtfParser
- Defined in packages/pdf-lite/src/fonts/parsers/otf-parser.ts:16

Methods

getCharWidths

getCharWidths(firstChar: number, lastChar: number): number[]
Gets character widths for a range of characters.
Parameters
- firstChar: number
- lastChar: number
Returns number[]
Implementation of FontParser.getCharWidths
- Defined in packages/pdf-lite/src/fonts/parsers/otf-parser.ts:144

getFontData

getFontData(): ByteArray
Returns the original font bytes.

Returns ByteArray
Implementation of FontParser.getFontData
- Defined in packages/pdf-lite/src/fonts/parsers/otf-parser.ts:28

getFontDescriptor

getFontDescriptor(fontName?: string): FontDescriptor
Creates a FontDescriptor suitable for embedding. Scales metrics to PDF's 1000-unit em square.
Parameters
- OptionalfontName: string
Returns FontDescriptor
Implementation of FontParser.getFontDescriptor
- Defined in packages/pdf-lite/src/fonts/parsers/otf-parser.ts:108

getFontInfo

getFontInfo(): TtfFontInfo
Parses the font and returns basic font information.

Returns TtfFontInfo
Implementation of FontParser.getFontInfo
- Defined in packages/pdf-lite/src/fonts/parsers/otf-parser.ts:78

isCFFBased

isCFFBased(): boolean
Returns true if this is a CFF-based OpenType font.

Returns boolean
- Defined in packages/pdf-lite/src/fonts/parsers/otf-parser.ts:71

parseCmap

parseCmap(): Map<number, number>
Parses the font's cmap table to extract Unicode to glyph ID mappings.

Returns Map<number, number>
A map from Unicode code points to glyph IDs
Implementation of FontParser.parseCmap
- Defined in packages/pdf-lite/src/fonts/parsers/otf-parser.ts:306

parseHmtx

parseHmtx(): Map<number, number>
Parses the font's hmtx table to extract glyph advance widths.

Returns Map<number, number>
A map from glyph IDs to advance widths (in font units)
Implementation of FontParser.parseHmtx
- Defined in packages/pdf-lite/src/fonts/parsers/otf-parser.ts:404