HROOT-core-0.10.0.1: src/HROOT/Core/TStyle/Interface.hs

{-# LANGUAGE EmptyDataDecls, ExistentialQuantification,
  FlexibleContexts, FlexibleInstances, ForeignFunctionInterface,
  MultiParamTypeClasses, ScopedTypeVariables, TypeFamilies,
  TypeSynonymInstances #-}
module HROOT.Core.TStyle.Interface where
import Data.Word
import Data.Int
import Foreign.C
import Foreign.Ptr
import FFICXX.Runtime.Cast
import HROOT.Core.TStyle.RawType
import HROOT.Core.TNamed.Interface
import HROOT.Core.TAttLine.Interface
import HROOT.Core.TAttFill.Interface
import HROOT.Core.TAttMarker.Interface
import HROOT.Core.TAttText.Interface

class (ITNamed a, ITAttLine a, ITAttFill a, ITAttMarker a,
       ITAttText a) =>
      ITStyle a where

upcastTStyle :: forall a . (FPtr a, ITStyle a) => a -> TStyle
upcastTStyle h
  = let fh = get_fptr h
        fh2 :: Ptr RawTStyle = castPtr fh
      in cast_fptr_to_obj fh2

downcastTStyle :: forall a . (FPtr a, ITStyle a) => TStyle -> a
downcastTStyle h
  = let fh = get_fptr h
        fh2 = castPtr fh
      in cast_fptr_to_obj fh2