Represents a single OpenType font feature. More...

Public Member Functions
constexpr	FontFeatureTag (const char(&string)[5])
	Constructs a feature from the specified tag string.

constexpr	FontFeatureTag (uint32 tagValue)
	Constructs a feature from the specified tag value.

String	toString () const
	Returns a string representation of this tag.

constexpr uint32	getTag () const
	Returns the Harfbuzz compatible OpenType tag as an unsigned 32-bit integer.

constexpr bool	operator< (FontFeatureTag other) const
	Comparison based on tag value.

constexpr bool	operator<= (FontFeatureTag other) const
	Comparison based on tag value.

constexpr bool	operator> (FontFeatureTag other) const
	Comparison based on tag value.

constexpr bool	operator>= (FontFeatureTag other) const
	Comparison based on tag value.

constexpr bool	operator== (FontFeatureTag other) const
	Comparison based on tag value.

constexpr bool	operator!= (FontFeatureTag other) const
	Comparison based on tag value.

Static Public Member Functions
static FontFeatureTag	fromString (const String &tagString)
	Creates a new FontFeature with the specified tag.

Detailed Description

Represents a single OpenType font feature.

OpenType font features are typographic options that can be enabled or disabled to control text rendering behavior. Each feature is identified by a four-character tag (like 'liga' for standard ligatures or 'smcp' for small caps). These features allow fine-grained control over how text is displayed, including ligatures, number styles, stylistic alternates, and positioning adjustments.

The tag must be exactly 4 characters long.

See also: FontOptions, Font

Constructor & Destructor Documentation

◆ FontFeatureTag() [1/2]

FontFeatureTag::FontFeatureTag ( const char(&) string[5] )

constexpr

Constructs a feature from the specified tag string.

Referenced by fromString(), operator!=(), operator<(), operator<=(), operator==(), operator>(), and operator>=().

◆ FontFeatureTag() [2/2]

FontFeatureTag::FontFeatureTag ( uint32 tagValue )

explicitconstexpr

Constructs a feature from the specified tag value.

Member Function Documentation

◆ fromString()

static FontFeatureTag FontFeatureTag::fromString ( const String & tagString )

staticnodiscard

Creates a new FontFeature with the specified tag.

References FontFeatureTag().

◆ toString()

String FontFeatureTag::toString ( ) const

Returns a string representation of this tag.

◆ getTag()

uint32 FontFeatureTag::getTag ( ) const

constexpr

Returns the Harfbuzz compatible OpenType tag as an unsigned 32-bit integer.