{-# LANGUAGE ForeignFunctionInterface, TypeFamilies, MultiParamTypeClasses, 
             FlexibleInstances, TypeSynonymInstances, 
             EmptyDataDecls, ExistentialQuantification, ScopedTypeVariables #-}

-- module HROOT.Class.Interface where

module HROOT.Core.TAttText.Interface where


import Data.Word
import Foreign.C
import Foreign.Ptr
import Foreign.ForeignPtr
import FFICXX.Runtime.Cast

import HROOT.Core.TAttText.RawType

import HROOT.Core.Deletable.Interface
---- ============ ----



class (IDeletable a) => ITAttText a where

    getTextAlign :: a -> IO CInt 

    getTextAngle :: a -> IO CDouble 

    getTextColor :: a -> IO CInt 

    getTextFont :: a -> IO CInt 

    getTextSize :: a -> IO CDouble 

    resetAttText :: a -> CString -> IO () 

    setTextAttributes :: a -> IO () 

    setTextAlign :: a -> CInt -> IO () 

    setTextAngle :: a -> CDouble -> IO () 

    setTextColor :: a -> CInt -> IO () 

    setTextFont :: a -> CInt -> IO () 

    setTextSize :: a -> CDouble -> IO () 

    setTextSizePixels :: a -> CInt -> IO () 

instance Existable TAttText where
  data Exist TAttText = forall a. (FPtr a, ITAttText a) => ETAttText a

upcastTAttText :: (FPtr a, ITAttText a) => a -> TAttText
upcastTAttText h = let fh = get_fptr h
                       fh2 :: ForeignPtr RawTAttText = castForeignPtr fh
                   in cast_fptr_to_obj fh2

downcastTAttText :: (FPtr a, ITAttText a) => TAttText -> a 
downcastTAttText h = let fh = get_fptr h
                         fh2 = castForeignPtr fh
                     in cast_fptr_to_obj fh2