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

'GI.PangoCairo.Interfaces.Font.Font' is an interface exported by fonts for
use with Cairo. The actual type of the font will depend
on the particular font technology Cairo was compiled to use.
-}

module GI.PangoCairo.Interfaces.Font
    ( 

-- * Exported types
    Font(..)                                ,
    noFont                                  ,
    IsFont                                  ,
    toFont                                  ,


 -- * Methods
-- ** getScaledFont #method:getScaledFont#
    FontGetScaledFontMethodInfo             ,
    fontGetScaledFont                       ,




    ) 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 qualified GI.Cairo.Structs.ScaledFont as Cairo.ScaledFont
import qualified GI.GObject.Objects.Object as GObject.Object
import qualified GI.Pango.Objects.Font as Pango.Font

-- interface Font 
newtype Font = Font (ManagedPtr Font)
noFont :: Maybe Font
noFont = Nothing

type instance O.SignalList Font = FontSignalList
type FontSignalList = ('[ '("notify", GObject.Object.ObjectNotifySignalInfo)] :: [(Symbol, *)])

foreign import ccall "pango_cairo_font_get_type"
    c_pango_cairo_font_get_type :: IO GType

instance GObject Font where
    gobjectType _ = c_pango_cairo_font_get_type
    

class GObject o => IsFont o
#if MIN_VERSION_base(4,9,0)
instance {-# OVERLAPPABLE #-} (GObject a, O.UnknownAncestorError Font a) =>
    IsFont a
#endif
instance IsFont Font
instance Pango.Font.IsFont Font
instance GObject.Object.IsObject Font

toFont :: IsFont o => o -> IO Font
toFont = unsafeCastTo Font

instance O.HasAttributeList Font
type instance O.AttributeList Font = FontAttributeList
type FontAttributeList = ('[ ] :: [(Symbol, *)])

type family ResolveFontMethod (t :: Symbol) (o :: *) :: * where
    ResolveFontMethod "bindProperty" o = GObject.Object.ObjectBindPropertyMethodInfo
    ResolveFontMethod "bindPropertyFull" o = GObject.Object.ObjectBindPropertyFullMethodInfo
    ResolveFontMethod "describe" o = Pango.Font.FontDescribeMethodInfo
    ResolveFontMethod "describeWithAbsoluteSize" o = Pango.Font.FontDescribeWithAbsoluteSizeMethodInfo
    ResolveFontMethod "forceFloating" o = GObject.Object.ObjectForceFloatingMethodInfo
    ResolveFontMethod "freezeNotify" o = GObject.Object.ObjectFreezeNotifyMethodInfo
    ResolveFontMethod "isFloating" o = GObject.Object.ObjectIsFloatingMethodInfo
    ResolveFontMethod "notify" o = GObject.Object.ObjectNotifyMethodInfo
    ResolveFontMethod "notifyByPspec" o = GObject.Object.ObjectNotifyByPspecMethodInfo
    ResolveFontMethod "ref" o = GObject.Object.ObjectRefMethodInfo
    ResolveFontMethod "refSink" o = GObject.Object.ObjectRefSinkMethodInfo
    ResolveFontMethod "replaceData" o = GObject.Object.ObjectReplaceDataMethodInfo
    ResolveFontMethod "replaceQdata" o = GObject.Object.ObjectReplaceQdataMethodInfo
    ResolveFontMethod "runDispose" o = GObject.Object.ObjectRunDisposeMethodInfo
    ResolveFontMethod "stealData" o = GObject.Object.ObjectStealDataMethodInfo
    ResolveFontMethod "stealQdata" o = GObject.Object.ObjectStealQdataMethodInfo
    ResolveFontMethod "thawNotify" o = GObject.Object.ObjectThawNotifyMethodInfo
    ResolveFontMethod "unref" o = GObject.Object.ObjectUnrefMethodInfo
    ResolveFontMethod "watchClosure" o = GObject.Object.ObjectWatchClosureMethodInfo
    ResolveFontMethod "getData" o = GObject.Object.ObjectGetDataMethodInfo
    ResolveFontMethod "getFontMap" o = Pango.Font.FontGetFontMapMethodInfo
    ResolveFontMethod "getGlyphExtents" o = Pango.Font.FontGetGlyphExtentsMethodInfo
    ResolveFontMethod "getMetrics" o = Pango.Font.FontGetMetricsMethodInfo
    ResolveFontMethod "getProperty" o = GObject.Object.ObjectGetPropertyMethodInfo
    ResolveFontMethod "getQdata" o = GObject.Object.ObjectGetQdataMethodInfo
    ResolveFontMethod "getScaledFont" o = FontGetScaledFontMethodInfo
    ResolveFontMethod "setData" o = GObject.Object.ObjectSetDataMethodInfo
    ResolveFontMethod "setProperty" o = GObject.Object.ObjectSetPropertyMethodInfo
    ResolveFontMethod l o = O.MethodResolutionFailed l o

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

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

-- method Font::get_scaled_font
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "font", argType = TInterface (Name {namespace = "PangoCairo", name = "Font"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #PangoFont from a #PangoCairoFontMap", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TInterface (Name {namespace = "cairo", name = "ScaledFont"}))
-- throws : False
-- Skip return : False

foreign import ccall "pango_cairo_font_get_scaled_font" pango_cairo_font_get_scaled_font :: 
    Ptr Font ->                             -- font : TInterface (Name {namespace = "PangoCairo", name = "Font"})
    IO (Ptr Cairo.ScaledFont.ScaledFont)

{- |
Gets the 'GI.Cairo.Structs.ScaledFont.ScaledFont' used by /@font@/.
The scaled font can be referenced and kept using
@/cairo_scaled_font_reference()/@.

@since 1.18
-}
fontGetScaledFont ::
    (B.CallStack.HasCallStack, MonadIO m, IsFont a) =>
    a
    {- ^ /@font@/: a 'GI.Pango.Objects.Font.Font' from a 'GI.PangoCairo.Interfaces.FontMap.FontMap' -}
    -> m (Maybe Cairo.ScaledFont.ScaledFont)
    {- ^ __Returns:__ the 'GI.Cairo.Structs.ScaledFont.ScaledFont' used by /@font@/,
              or 'Nothing' if /@font@/ is 'Nothing'. -}
fontGetScaledFont font = liftIO $ do
    font' <- unsafeManagedPtrCastPtr font
    result <- pango_cairo_font_get_scaled_font font'
    maybeResult <- convertIfNonNull result $ \result' -> do
        result'' <- (wrapBoxed Cairo.ScaledFont.ScaledFont) result'
        return result''
    touchManagedPtr font
    return maybeResult

data FontGetScaledFontMethodInfo
instance (signature ~ (m (Maybe Cairo.ScaledFont.ScaledFont)), MonadIO m, IsFont a) => O.MethodInfo FontGetScaledFontMethodInfo a signature where
    overloadedMethod _ = fontGetScaledFont