Data.GI.Base.GValue

Constructing GValues

newtype GValue

Haskell-side representation of a GValue.

Constructors

GValue (ManagedPtr GValue)

Instances

HasParentTypes GValue

Defined in Data.GI.Base.GValue

GBoxed GValue

GValues are registered as boxed in the GLib type system.

Defined in Data.GI.Base.GValue

TypedObject GValue

Find the associated GType for GValue.

Defined in Data.GI.Base.GValue

Methods

glibType :: IO GType

type ParentTypes GValue

There are no types in the bindings that a GValue can be safely cast to.

Defined in Data.GI.Base.GValue

type ParentTypes GValue = '[] :: [Type]

class IsGValue a where

A convenience class for marshaling back and forth between Haskell values and GValues.

Methods

toGValue :: a -> IO GValue

fromGValue :: GValue -> IO a

Instances

IsGValue Bool

Defined in Data.GI.Base.GValue

Methods

toGValue :: Bool -> IO GValue

fromGValue :: GValue -> IO Bool

IsGValue Double

Defined in Data.GI.Base.GValue

Methods

toGValue :: Double -> IO GValue

fromGValue :: GValue -> IO Double

IsGValue Float

Defined in Data.GI.Base.GValue

Methods

toGValue :: Float -> IO GValue

fromGValue :: GValue -> IO Float

IsGValue Int32

Defined in Data.GI.Base.GValue

Methods

toGValue :: Int32 -> IO GValue

fromGValue :: GValue -> IO Int32

IsGValue Int64

Defined in Data.GI.Base.GValue

Methods

toGValue :: Int64 -> IO GValue

fromGValue :: GValue -> IO Int64

IsGValue Word32

Defined in Data.GI.Base.GValue

Methods

toGValue :: Word32 -> IO GValue

fromGValue :: GValue -> IO Word32

IsGValue Word64

Defined in Data.GI.Base.GValue

Methods

toGValue :: Word64 -> IO GValue

fromGValue :: GValue -> IO Word64

IsGValue CInt

Defined in Data.GI.Base.GValue

Methods

toGValue :: CInt -> IO GValue

fromGValue :: GValue -> IO CInt

IsGValue CLong

Defined in Data.GI.Base.GValue

Methods

toGValue :: CLong -> IO GValue

fromGValue :: GValue -> IO CLong

IsGValue CUInt

Defined in Data.GI.Base.GValue

Methods

toGValue :: CUInt -> IO GValue

fromGValue :: GValue -> IO CUInt

IsGValue CULong

Defined in Data.GI.Base.GValue

Methods

toGValue :: CULong -> IO GValue

fromGValue :: GValue -> IO CULong

IsGValue GType

Defined in Data.GI.Base.GValue

Methods

toGValue :: GType -> IO GValue

fromGValue :: GValue -> IO GType

IsGValue (Maybe String)

Defined in Data.GI.Base.GValue

Methods

toGValue :: Maybe String -> IO GValue

fromGValue :: GValue -> IO (Maybe String)

IsGValue (Maybe Text)

Defined in Data.GI.Base.GValue

Methods

toGValue :: Maybe Text -> IO GValue

fromGValue :: GValue -> IO (Maybe Text)

IsGValue (StablePtr a)

Defined in Data.GI.Base.GValue

Methods

toGValue :: StablePtr a -> IO GValue

fromGValue :: GValue -> IO (StablePtr a)

IsGValue (Ptr a)

Defined in Data.GI.Base.GValue

Methods

toGValue :: Ptr a -> IO GValue

fromGValue :: GValue -> IO (Ptr a)

data GValueConstruct o

A type holding a GValue with an associated label. It is parameterized by a phantom type encoding the target type for the GValue (useful when constructing properties).

Constructors

GValueConstruct String GValue

newGValue :: GType -> IO GValue

Build a new, empty, GValue of the given type.

buildGValue :: GType -> (GValue -> a -> IO ()) -> a -> IO GValue

A convenience function for building a new GValue and setting the initial value.

disownGValue :: GValue -> IO (Ptr GValue)

Disown a GValue, i.e. do not unref the underlying object when the Haskell object is garbage collected.

noGValue :: Maybe GValue

A convenience alias for Nothing :: Maybe GValue.

newGValueFromPtr :: Ptr GValue -> IO GValue

Construct a Haskell wrapper for the given GValue, making a copy.

wrapGValuePtr :: Ptr GValue -> IO GValue

Take ownership of a passed in Ptr.

unsetGValue :: Ptr GValue -> IO ()

Unset the GValue, freeing all resources associated to it.

gvalueType :: GValue -> IO GType

Return the GType contained by a GValue.

Packing GValues into arrays

packGValueArray :: [GValue] -> IO (Ptr GValue)

Pack the given list of GValues contiguously into a C array

unpackGValueArrayWithLength :: Integral a => a -> Ptr GValue -> IO [GValue]

Unpack an array of contiguous GValues into a list of GValues.

mapGValueArrayWithLength :: Integral a => a -> (Ptr GValue -> IO c) -> Ptr GValue -> IO ()

Map over the GValues inside a C array.

Setters and getters

set_string :: GValue -> Maybe Text -> IO ()

get_string :: GValue -> IO (Maybe Text)

set_pointer :: GValue -> Ptr a -> IO ()

get_pointer :: GValue -> IO (Ptr b)

set_int :: GValue -> CInt -> IO ()

get_int :: GValue -> IO CInt

set_uint :: GValue -> CUInt -> IO ()

get_uint :: GValue -> IO CUInt

set_long :: GValue -> CLong -> IO ()

get_long :: GValue -> IO CLong

set_ulong :: GValue -> CULong -> IO ()

get_ulong :: GValue -> IO CULong

set_int32 :: GValue -> Int32 -> IO ()

get_int32 :: GValue -> IO Int32

set_uint32 :: GValue -> Word32 -> IO ()

get_uint32 :: GValue -> IO Word32

set_int64 :: GValue -> Int64 -> IO ()

get_int64 :: GValue -> IO Int64

set_uint64 :: GValue -> Word64 -> IO ()

get_uint64 :: GValue -> IO Word64

set_float :: GValue -> Float -> IO ()

get_float :: GValue -> IO Float

set_double :: GValue -> Double -> IO ()

get_double :: GValue -> IO Double

set_boolean :: GValue -> Bool -> IO ()

get_boolean :: GValue -> IO Bool

set_gtype :: GValue -> GType -> IO ()

get_gtype :: GValue -> IO GType

set_object :: GObject a => GValue -> Ptr a -> IO ()

get_object :: GObject b => GValue -> IO (Ptr b)

set_boxed :: GValue -> Ptr a -> IO ()

get_boxed :: GValue -> IO (Ptr b)

set_variant :: GValue -> Ptr GVariant -> IO ()

get_variant :: GValue -> IO (Ptr GVariant)

set_enum :: GValue -> CUInt -> IO ()

get_enum :: GValue -> IO CUInt

set_flags :: GValue -> CUInt -> IO ()

get_flags :: GValue -> IO CUInt

set_stablePtr :: GValue -> StablePtr a -> IO ()

Set the value of GValue containing a StablePtr

get_stablePtr :: GValue -> IO (StablePtr a)

Get the value of a GValue containing a StablePtr

take_stablePtr :: Ptr GValue -> StablePtr a -> IO ()

Like set_stablePtr, but the GValue takes ownership of the StablePtr