Copyright | Will Thompson and Iñaki García Etxebarria |
---|---|
License | LGPL-2.1 |
Maintainer | Iñaki García Etxebarria |
Safe Haskell | Safe-Inferred |
Language | Haskell2010 |
Glyph paint callbacks.
The callbacks assume that the caller maintains a stack of current transforms, clips and intermediate surfaces, as evidenced by the pairs of push/pop callbacks. The push/pop calls will be properly nested, so it is fine to store the different kinds of object on a single stack.
Not all callbacks are required for all kinds of glyphs.
For rendering COLRv0 or non-color outline glyphs, the
gradient callbacks are not needed, and the composite
callback only needs to handle simple alpha compositing
(HB_PAINT_COMPOSITE_MODE_SRC_OVER
).
The paint-image callback is only needed for glyphs with image blobs in the CBDT, sbix or SVG tables.
The custom-palette-color callback is only necessary if you want to override colors from the font palette with custom colors.
Since: 7.0.0
Synopsis
- newtype PaintFuncsT = PaintFuncsT (ManagedPtr PaintFuncsT)
Exported types
newtype PaintFuncsT Source #
Memory-managed wrapper type.
PaintFuncsT (ManagedPtr PaintFuncsT) |
Instances
Eq PaintFuncsT Source # | |
Defined in GI.HarfBuzz.Structs.PaintFuncsT (==) :: PaintFuncsT -> PaintFuncsT -> Bool # (/=) :: PaintFuncsT -> PaintFuncsT -> Bool # | |
GBoxed PaintFuncsT Source # | |
Defined in GI.HarfBuzz.Structs.PaintFuncsT | |
ManagedPtrNewtype PaintFuncsT Source # | |
Defined in GI.HarfBuzz.Structs.PaintFuncsT toManagedPtr :: PaintFuncsT -> ManagedPtr PaintFuncsT | |
TypedObject PaintFuncsT Source # | |
Defined in GI.HarfBuzz.Structs.PaintFuncsT | |
HasParentTypes PaintFuncsT Source # | |
Defined in GI.HarfBuzz.Structs.PaintFuncsT | |
IsGValue (Maybe PaintFuncsT) Source # | Convert |
Defined in GI.HarfBuzz.Structs.PaintFuncsT gvalueGType_ :: IO GType gvalueSet_ :: Ptr GValue -> Maybe PaintFuncsT -> IO () gvalueGet_ :: Ptr GValue -> IO (Maybe PaintFuncsT) | |
type ParentTypes PaintFuncsT Source # | |
Defined in GI.HarfBuzz.Structs.PaintFuncsT |