@pdfa-lab/fontkit / ArabicShaper

Class: ArabicShaper

Defined in: src/open-type/shapers/arabic-shaper.ts:168

This is a shaper for Arabic, and other cursive scripts. It uses data from ArabicShaping.txt in the Unicode database, compiled to a UnicodeTrie by generate-data.coffee.

The shaping state machine was ported from Harfbuzz. https://github.com/behdad/harfbuzz/blob/master/src/hb-ot-shape-complex-arabic.cc

Extends

• DefaultShaper

Constructors

Constructor

new ArabicShaper(): ArabicShaper

Returns

ArabicShaper

Inherited from

DefaultShaper.constructor

Properties

Property	Modifier	Type	Default value	Inherited from	Defined in
zeroMarkWidths	static	string	'AFTER_GPOS'	DefaultShaper.zeroMarkWidths	src/open-type/shapers/default-shaper.ts:32

Methods

assignFeatures()

protected static assignFeatures<T>(plan, glyphs): void

Defined in: src/open-type/shapers/arabic-shaper.ts:179

Type Parameters

Type Parameter	Default type
T	null

Parameters

Parameter	Type
plan	ShapingPlan<T>
glyphs	GlyphInfo<T>[]

Returns

void

Overrides

DefaultShaper.assignFeatures

---

plan()

static plan<T>(plan, glyphs, features): void

Defined in: src/open-type/shapers/default-shaper.ts:33

Type Parameters

Type Parameter
T

Parameters

Parameter	Type
plan	ShapingPlan<T>
glyphs	GlyphInfo<T>[]
features	FeatureFlags

Returns

void

Inherited from

DefaultShaper.plan

---

planFeatures()

static planFeatures<T>(plan): void

Defined in: src/open-type/shapers/arabic-shaper.ts:169

Type Parameters

Type Parameter
T

Parameters

Parameter	Type
plan	ShapingPlan<T>

Returns

void

Overrides

DefaultShaper.planFeatures

---

planPostprocessing()

static planPostprocessing<T>(plan, userFeatures): void

Defined in: src/open-type/shapers/default-shaper.ts:65

Type Parameters

Type Parameter
T

Parameters

Parameter	Type
plan	ShapingPlan<T>
userFeatures	FeatureFlags

Returns

void

Inherited from

DefaultShaper.planPostprocessing

---

planPreprocessing()

static planPreprocessing<T>(plan): void

Defined in: src/open-type/shapers/default-shaper.ts:54

Type Parameters

Type Parameter
T

Parameters

Parameter	Type
plan	ShapingPlan<T>

Returns

void

Inherited from

DefaultShaper.planPreprocessing