Copyright	Will Thompson and Iñaki García Etxebarria
License	LGPL-2.1
Maintainer	Iñaki García Etxebarria
Safe Haskell	Safe-Inferred
Language	Haskell2010

GI.HarfBuzz.Structs.FeatureT

Contents

Exported types
Methods
Properties
- end
- start
- tag
- value

Description

The FeatureT is the structure that holds information about requested feature application. The feature will be applied with the given value to all glyphs which are in clusters between start (inclusive) and end (exclusive). Setting start to FEATURE_GLOBAL_START and end to HB_FEATURE_GLOBAL_END specifies that the feature always applies to the entire buffer.

Synopsis

newtype FeatureT = FeatureT (ManagedPtr FeatureT)
newZeroFeatureT :: MonadIO m => m FeatureT
getFeatureTEnd :: MonadIO m => FeatureT -> m Word32
setFeatureTEnd :: MonadIO m => FeatureT -> Word32 -> m ()
getFeatureTStart :: MonadIO m => FeatureT -> m Word32
setFeatureTStart :: MonadIO m => FeatureT -> Word32 -> m ()
getFeatureTTag :: MonadIO m => FeatureT -> m Word32
setFeatureTTag :: MonadIO m => FeatureT -> Word32 -> m ()
getFeatureTValue :: MonadIO m => FeatureT -> m Word32
setFeatureTValue :: MonadIO m => FeatureT -> Word32 -> m ()

Exported types

newtype FeatureT Source #

Memory-managed wrapper type.

Constructors

FeatureT (ManagedPtr FeatureT)

Instances

Instances details

Eq FeatureT Source #
Instance details Defined in GI.HarfBuzz.Structs.FeatureT Methods (==) :: FeatureT -> FeatureT -> Bool # (/=) :: FeatureT -> FeatureT -> Bool #
GBoxed FeatureT Source #
Instance details Defined in GI.HarfBuzz.Structs.FeatureT
ManagedPtrNewtype FeatureT Source #
Instance details Defined in GI.HarfBuzz.Structs.FeatureT Methods toManagedPtr :: FeatureT -> ManagedPtr FeatureT #
TypedObject FeatureT Source #
Instance details Defined in GI.HarfBuzz.Structs.FeatureT Methods glibType :: IO GType #
HasParentTypes FeatureT Source #
Instance details Defined in GI.HarfBuzz.Structs.FeatureT
tag ~ 'AttrSet => Constructible FeatureT tag Source #
Instance details Defined in GI.HarfBuzz.Structs.FeatureT Methods new :: MonadIO m => (ManagedPtr FeatureT -> FeatureT) -> [AttrOp FeatureT tag] -> m FeatureT #
IsGValue (Maybe FeatureT) Source #	Convert `FeatureT` to and from `GValue`. See `toGValue` and `fromGValue`.
Instance details Defined in GI.HarfBuzz.Structs.FeatureT Methods gvalueGType_ :: IO GType # gvalueSet_ :: Ptr GValue -> Maybe FeatureT -> IO () # gvalueGet_ :: Ptr GValue -> IO (Maybe FeatureT) #
type ParentTypes FeatureT Source #
Instance details Defined in GI.HarfBuzz.Structs.FeatureT type ParentTypes FeatureT = '[] :: [Type]

newZeroFeatureT :: MonadIO m => m FeatureT Source #

Construct a FeatureT struct initialized to zero.

Methods

Properties

end

the cluster to end applying this feature setting (exclusive).

getFeatureTEnd :: MonadIO m => FeatureT -> m Word32 Source #

Get the value of the “end” field. When overloading is enabled, this is equivalent to

get featureT #end

setFeatureTEnd :: MonadIO m => FeatureT -> Word32 -> m () Source #

Set the value of the “end” field. When overloading is enabled, this is equivalent to

set featureT [ #end := value ]

start

the cluster to start applying this feature setting (inclusive).

getFeatureTStart :: MonadIO m => FeatureT -> m Word32 Source #

Get the value of the “start” field. When overloading is enabled, this is equivalent to

get featureT #start

setFeatureTStart :: MonadIO m => FeatureT -> Word32 -> m () Source #

Set the value of the “start” field. When overloading is enabled, this is equivalent to

set featureT [ #start := value ]

tag

The hb_tag_t tag of the feature

getFeatureTTag :: MonadIO m => FeatureT -> m Word32 Source #

Get the value of the “tag” field. When overloading is enabled, this is equivalent to

get featureT #tag

setFeatureTTag :: MonadIO m => FeatureT -> Word32 -> m () Source #

Set the value of the “tag” field. When overloading is enabled, this is equivalent to

set featureT [ #tag := value ]

value

The value of the feature. 0 disables the feature, non-zero (usually 1) enables the feature. For features implemented as lookup type 3 (like 'salt') the value is a one based index into the alternates.

getFeatureTValue :: MonadIO m => FeatureT -> m Word32 Source #

Get the value of the “value” field. When overloading is enabled, this is equivalent to

get featureT #value

setFeatureTValue :: MonadIO m => FeatureT -> Word32 -> m () Source #

Set the value of the “value” field. When overloading is enabled, this is equivalent to

set featureT [ #value := value ]