FontFeatureSetting Class Reference

Represents a single OpenType font feature setting. More...

Public Member Functions
constexpr	FontFeatureSetting (FontFeatureTag featureTag, uint32 featureValue) noexcept
	Constructs a feature setting with the specified tag and optional value.
constexpr bool	operator< (const FontFeatureSetting &other) const
constexpr bool	operator<= (const FontFeatureSetting &other) const
constexpr bool	operator> (const FontFeatureSetting &other) const
constexpr bool	operator>= (const FontFeatureSetting &other) const
constexpr bool	operator== (const FontFeatureSetting &other) const
constexpr bool	operator!= (const FontFeatureSetting &other) const

Public Attributes
FontFeatureTag	tag
	The OpenType feature tag.
uint32	value
	The value for this feature.

Static Public Attributes
static constexpr auto	featureEnabled = 1
	Common feature values for convenience.
static constexpr auto	featureDisabled = 0
	Disable this feature (value=0).

Detailed Description

Represents a single OpenType font feature setting.

A font feature setting combines a FontFeatureTag with an optional value that controls the behavior of that feature. For example, a 'liga' (standard ligatures) feature can be enabled (value=1) or disabled (value=0), while other features like 'salt' (stylistic alternates) might accept a range of values to select specific alternates.

See also

FontFeatureTag, FontOptions, Font

Constructor & Destructor Documentation

FontFeatureSetting()

constexpr FontFeatureSetting::FontFeatureSetting ( FontFeatureTag  featureTag, uint32  featureValue  )

constexprnoexcept

Constructs a feature setting with the specified tag and optional value.

Member Function Documentation

operator<()

constexpr bool FontFeatureSetting::operator< ( const FontFeatureSetting &  other ) const

constexpr

operator<=()

constexpr bool FontFeatureSetting::operator<= ( const FontFeatureSetting &  other ) const

constexpr

operator>()

constexpr bool FontFeatureSetting::operator> ( const FontFeatureSetting &  other ) const

constexpr

operator>=()

constexpr bool FontFeatureSetting::operator>= ( const FontFeatureSetting &  other ) const

constexpr

operator==()

constexpr bool FontFeatureSetting::operator== ( const FontFeatureSetting &  other ) const

constexpr

operator!=()

constexpr bool FontFeatureSetting::operator!= ( const FontFeatureSetting &  other ) const

constexpr

Member Data Documentation

featureEnabled

constexpr auto FontFeatureSetting::featureEnabled = 1

staticconstexpr

Common feature values for convenience.

Enable this feature (value=1).

Referenced by FontOptions::withFeatureEnabled().

featureDisabled

constexpr auto FontFeatureSetting::featureDisabled = 0

staticconstexpr

Disable this feature (value=0).

Referenced by FontOptions::withFeatureDisabled().

tag

FontFeatureTag FontFeatureSetting::tag

The OpenType feature tag.

value

uint32 FontFeatureSetting::value

The value for this feature.

Common values are 0 (featureDisabled) and 1 (featureEnabled), but some features support additional values for specific behaviors.