HROOT-graf-0.8: src/HROOT/Graf/TLine/Interface.hs

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

-- module HROOT.Class.Interface where

module HROOT.Graf.TLine.Interface where


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

import HROOT.Graf.TLine.RawType

import HROOT.Core.TObject.Interface
import HROOT.Core.TAttLine.Interface
---- ============ ----



class (ITObject a,ITAttLine a) => ITLine a where

    drawLine :: a -> CDouble -> CDouble -> CDouble -> CDouble -> IO TLine 

    drawLineNDC :: a -> CDouble -> CDouble -> CDouble -> CDouble -> IO TLine 

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

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

    setX1 :: a -> CDouble -> IO () 

    setX2 :: a -> CDouble -> IO () 

    setY1 :: a -> CDouble -> IO () 

    setY2 :: a -> CDouble -> IO () 

instance Existable TLine where
  data Exist TLine = forall a. (FPtr a, ITLine a) => ETLine a

upcastTLine :: (FPtr a, ITLine a) => a -> TLine
upcastTLine h = let fh = get_fptr h
                    fh2 :: ForeignPtr RawTLine = castForeignPtr fh
                in cast_fptr_to_obj fh2

downcastTLine :: (FPtr a, ITLine a) => TLine -> a 
downcastTLine h = let fh = get_fptr h
                      fh2 = castForeignPtr fh
                  in cast_fptr_to_obj fh2