GI.HarfBuzz.Structs.FontExtentsT

Font-wide extent values, measured in font units.

Note that typically ascender is positive and descender negative, in coordinate systems that grow up.

Exported types

newtype FontExtentsT

Memory-managed wrapper type.

Constructors

FontExtentsT (ManagedPtr FontExtentsT)

Instances

Eq FontExtentsT

Defined in GI.HarfBuzz.Structs.FontExtentsT

Methods

(==) :: FontExtentsT -> FontExtentsT -> Bool

(/=) :: FontExtentsT -> FontExtentsT -> Bool

BoxedPtr FontExtentsT

Defined in GI.HarfBuzz.Structs.FontExtentsT

Methods

boxedPtrCopy :: FontExtentsT -> IO FontExtentsT

boxedPtrFree :: FontExtentsT -> IO ()

CallocPtr FontExtentsT

Defined in GI.HarfBuzz.Structs.FontExtentsT

Methods

boxedPtrCalloc :: IO (Ptr FontExtentsT)

ManagedPtrNewtype FontExtentsT

Defined in GI.HarfBuzz.Structs.FontExtentsT

Methods

toManagedPtr :: FontExtentsT -> ManagedPtr FontExtentsT

tag ~ 'AttrSet => Constructible FontExtentsT tag

Defined in GI.HarfBuzz.Structs.FontExtentsT

Methods

new :: MonadIO m => (ManagedPtr FontExtentsT -> FontExtentsT) -> [AttrOp FontExtentsT tag] -> m FontExtentsT

newZeroFontExtentsT :: MonadIO m => m FontExtentsT

Construct a FontExtentsT struct initialized to zero.

Methods

Properties

ascender

The height of typographic ascenders.

getFontExtentsTAscender :: MonadIO m => FontExtentsT -> m Int32

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

get fontExtentsT #ascender

setFontExtentsTAscender :: MonadIO m => FontExtentsT -> Int32 -> m ()

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

set fontExtentsT [ #ascender := value ]

descender

The depth of typographic descenders.

getFontExtentsTDescender :: MonadIO m => FontExtentsT -> m Int32

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

get fontExtentsT #descender

setFontExtentsTDescender :: MonadIO m => FontExtentsT -> Int32 -> m ()

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

set fontExtentsT [ #descender := value ]

lineGap

The suggested line-spacing gap.

getFontExtentsTLineGap :: MonadIO m => FontExtentsT -> m Int32

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

get fontExtentsT #lineGap

setFontExtentsTLineGap :: MonadIO m => FontExtentsT -> Int32 -> m ()

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

set fontExtentsT [ #lineGap := value ]