modern-pdf-lib

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modern-pdf-lib / FontMetrics

Interface: FontMetrics

Defined in: src/assets/font/fontMetrics.ts:26

Complete font metrics extracted from a TrueType / OpenType font file.

All values are in font design units (typically 1000 or 2048 per em) unless otherwise noted.

Properties

ascender

readonly ascender: number

Defined in: src/assets/font/fontMetrics.ts:30

Typographic ascender (from OS/2 sTypoAscender, or hhea ascent).

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bbox

readonly bbox: readonly [number, number, number, number]

Defined in: src/assets/font/fontMetrics.ts:56

Font bounding box [xMin, yMin, xMax, yMax] from head table.

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capHeight

readonly capHeight: number

Defined in: src/assets/font/fontMetrics.ts:36

Cap height (from OS/2 sCapHeight, or estimated).

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cmapTable

readonly cmapTable: Map<number, number>

Defined in: src/assets/font/fontMetrics.ts:54

Map of Unicode codepoint to glyph ID. Extracted from the cmap table (platform 3 / encoding 1 — Windows BMP, or platform 0).

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defaultWidth

readonly defaultWidth: number

Defined in: src/assets/font/fontMetrics.ts:44

Default advance width for glyphs not in glyphWidths.

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descender

readonly descender: number

Defined in: src/assets/font/fontMetrics.ts:32

Typographic descender — negative value (from OS/2 or hhea).

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familyName

readonly familyName: string

Defined in: src/assets/font/fontMetrics.ts:62

Font family name from the name table, if available.

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flags

readonly flags: number

Defined in: src/assets/font/fontMetrics.ts:60

Font flags for PDF FontDescriptor.

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glyphWidths

readonly glyphWidths: Map<number, number>

Defined in: src/assets/font/fontMetrics.ts:49

Map of glyph ID to advance width in font design units. Extracted from the hmtx table.

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italicAngle

readonly italicAngle: number

Defined in: src/assets/font/fontMetrics.ts:40

Italic angle in degrees (from post table).

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lineGap

readonly lineGap: number

Defined in: src/assets/font/fontMetrics.ts:34

Line gap (from OS/2 sTypoLineGap, or hhea lineGap).

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numGlyphs

readonly numGlyphs: number

Defined in: src/assets/font/fontMetrics.ts:42

Number of glyphs in the font (from maxp).

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postScriptName

readonly postScriptName: string

Defined in: src/assets/font/fontMetrics.ts:64

PostScript name from the name table, if available.

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stemV

readonly stemV: number

Defined in: src/assets/font/fontMetrics.ts:58

StemV estimate for PDF FontDescriptor (or 0 if unknown).

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unitsPerEm

readonly unitsPerEm: number

Defined in: src/assets/font/fontMetrics.ts:28

Units per em square (from head table).

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xHeight

readonly xHeight: number

Defined in: src/assets/font/fontMetrics.ts:38

x-height (from OS/2 sxHeight, or estimated).