{- |
Copyright  : Will Thompson, Iñaki García Etxebarria and Jonas Platte
License    : LGPL-2.1
Maintainer : Iñaki García Etxebarria (garetxe@gmail.com)

The 'GI.Pango.Structs.AttrFontFeatures.AttrFontFeatures' structure is used to represent OpenType
font features as an attribute.
-}

module GI.Pango.Structs.AttrFontFeatures
    ( 

-- * Exported types
    AttrFontFeatures(..)                    ,
    newZeroAttrFontFeatures                 ,
    noAttrFontFeatures                      ,


 -- * Methods
-- ** new #method:new#
    attrFontFeaturesNew                     ,




 -- * Properties
-- ** attr #attr:attr#
    attrFontFeatures_attr                   ,
    getAttrFontFeaturesAttr                 ,


-- ** features #attr:features#
    attrFontFeatures_features               ,
    clearAttrFontFeaturesFeatures           ,
    getAttrFontFeaturesFeatures             ,
    setAttrFontFeaturesFeatures             ,




    ) where

import Data.GI.Base.ShortPrelude
import qualified Data.GI.Base.ShortPrelude as SP
import qualified Data.GI.Base.Overloading as O
import qualified Prelude as P

import qualified Data.GI.Base.Attributes as GI.Attributes
import qualified Data.GI.Base.ManagedPtr as B.ManagedPtr
import qualified Data.GI.Base.GError as B.GError
import qualified Data.GI.Base.GVariant as B.GVariant
import qualified Data.GI.Base.GParamSpec as B.GParamSpec
import qualified Data.GI.Base.CallStack as B.CallStack
import qualified Data.Text as T
import qualified Data.ByteString.Char8 as B
import qualified Data.Map as Map
import qualified Foreign.Ptr as FP

import {-# SOURCE #-} qualified GI.Pango.Structs.Attribute as Pango.Attribute

newtype AttrFontFeatures = AttrFontFeatures (ManagedPtr AttrFontFeatures)
instance WrappedPtr AttrFontFeatures where
    wrappedPtrCalloc = callocBytes 24
    wrappedPtrCopy = \p -> withManagedPtr p (copyBytes 24 >=> wrapPtr AttrFontFeatures)
    wrappedPtrFree = Just ptr_to_g_free

-- | Construct a `AttrFontFeatures` struct initialized to zero.
newZeroAttrFontFeatures :: MonadIO m => m AttrFontFeatures
newZeroAttrFontFeatures = liftIO $ wrappedPtrCalloc >>= wrapPtr AttrFontFeatures

instance tag ~ 'AttrSet => Constructible AttrFontFeatures tag where
    new _ attrs = do
        o <- newZeroAttrFontFeatures
        GI.Attributes.set o attrs
        return o


noAttrFontFeatures :: Maybe AttrFontFeatures
noAttrFontFeatures = Nothing

getAttrFontFeaturesAttr :: MonadIO m => AttrFontFeatures -> m Pango.Attribute.Attribute
getAttrFontFeaturesAttr s = liftIO $ withManagedPtr s $ \ptr -> do
    let val = ptr `plusPtr` 0 :: (Ptr Pango.Attribute.Attribute)
    val' <- (newPtr Pango.Attribute.Attribute) val
    return val'

data AttrFontFeaturesAttrFieldInfo
instance AttrInfo AttrFontFeaturesAttrFieldInfo where
    type AttrAllowedOps AttrFontFeaturesAttrFieldInfo = '[ 'AttrGet]
    type AttrSetTypeConstraint AttrFontFeaturesAttrFieldInfo = (~) (Ptr Pango.Attribute.Attribute)
    type AttrBaseTypeConstraint AttrFontFeaturesAttrFieldInfo = (~) AttrFontFeatures
    type AttrGetType AttrFontFeaturesAttrFieldInfo = Pango.Attribute.Attribute
    type AttrLabel AttrFontFeaturesAttrFieldInfo = "attr"
    type AttrOrigin AttrFontFeaturesAttrFieldInfo = AttrFontFeatures
    attrGet _ = getAttrFontFeaturesAttr
    attrSet _ = undefined
    attrConstruct = undefined
    attrClear _ = undefined

attrFontFeatures_attr :: AttrLabelProxy "attr"
attrFontFeatures_attr = AttrLabelProxy


getAttrFontFeaturesFeatures :: MonadIO m => AttrFontFeatures -> m (Maybe T.Text)
getAttrFontFeaturesFeatures s = liftIO $ withManagedPtr s $ \ptr -> do
    val <- peek (ptr `plusPtr` 16) :: IO CString
    result <- SP.convertIfNonNull val $ \val' -> do
        val'' <- cstringToText val'
        return val''
    return result

setAttrFontFeaturesFeatures :: MonadIO m => AttrFontFeatures -> CString -> m ()
setAttrFontFeaturesFeatures s val = liftIO $ withManagedPtr s $ \ptr -> do
    poke (ptr `plusPtr` 16) (val :: CString)

clearAttrFontFeaturesFeatures :: MonadIO m => AttrFontFeatures -> m ()
clearAttrFontFeaturesFeatures s = liftIO $ withManagedPtr s $ \ptr -> do
    poke (ptr `plusPtr` 16) (FP.nullPtr :: CString)

data AttrFontFeaturesFeaturesFieldInfo
instance AttrInfo AttrFontFeaturesFeaturesFieldInfo where
    type AttrAllowedOps AttrFontFeaturesFeaturesFieldInfo = '[ 'AttrSet, 'AttrGet, 'AttrClear]
    type AttrSetTypeConstraint AttrFontFeaturesFeaturesFieldInfo = (~) CString
    type AttrBaseTypeConstraint AttrFontFeaturesFeaturesFieldInfo = (~) AttrFontFeatures
    type AttrGetType AttrFontFeaturesFeaturesFieldInfo = Maybe T.Text
    type AttrLabel AttrFontFeaturesFeaturesFieldInfo = "features"
    type AttrOrigin AttrFontFeaturesFeaturesFieldInfo = AttrFontFeatures
    attrGet _ = getAttrFontFeaturesFeatures
    attrSet _ = setAttrFontFeaturesFeatures
    attrConstruct = undefined
    attrClear _ = clearAttrFontFeaturesFeatures

attrFontFeatures_features :: AttrLabelProxy "features"
attrFontFeatures_features = AttrLabelProxy



instance O.HasAttributeList AttrFontFeatures
type instance O.AttributeList AttrFontFeatures = AttrFontFeaturesAttributeList
type AttrFontFeaturesAttributeList = ('[ '("attr", AttrFontFeaturesAttrFieldInfo), '("features", AttrFontFeaturesFeaturesFieldInfo)] :: [(Symbol, *)])

-- method AttrFontFeatures::new
-- method type : MemberFunction
-- Args : [Arg {argCName = "features", argType = TBasicType TUTF8, direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a string with OpenType font features, in CSS syntax", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TInterface (Name {namespace = "Pango", name = "Attribute"}))
-- throws : False
-- Skip return : False

foreign import ccall "pango_attr_font_features_new" pango_attr_font_features_new :: 
    CString ->                              -- features : TBasicType TUTF8
    IO (Ptr Pango.Attribute.Attribute)

{- |
Create a new font features tag attribute.

@since 1.38
-}
attrFontFeaturesNew ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    T.Text
    {- ^ /@features@/: a string with OpenType font features, in CSS syntax -}
    -> m Pango.Attribute.Attribute
    {- ^ __Returns:__ the newly allocated 'GI.Pango.Structs.Attribute.Attribute',
              which should be freed with 'GI.Pango.Structs.Attribute.attributeDestroy'. -}
attrFontFeaturesNew features = liftIO $ do
    features' <- textToCString features
    result <- pango_attr_font_features_new features'
    checkUnexpectedReturnNULL "attrFontFeaturesNew" result
    result' <- (wrapPtr Pango.Attribute.Attribute) result
    freeMem features'
    return result'

type family ResolveAttrFontFeaturesMethod (t :: Symbol) (o :: *) :: * where
    ResolveAttrFontFeaturesMethod l o = O.MethodResolutionFailed l o

instance (info ~ ResolveAttrFontFeaturesMethod t AttrFontFeatures, O.MethodInfo info AttrFontFeatures p) => O.IsLabelProxy t (AttrFontFeatures -> p) where
    fromLabelProxy _ = O.overloadedMethod (O.MethodProxy :: O.MethodProxy info)

#if MIN_VERSION_base(4,9,0)
instance (info ~ ResolveAttrFontFeaturesMethod t AttrFontFeatures, O.MethodInfo info AttrFontFeatures p) => O.IsLabel t (AttrFontFeatures -> p) where
    fromLabel _ = O.overloadedMethod (O.MethodProxy :: O.MethodProxy info)
#endif