{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DeriveTraversable #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE PatternSynonyms #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE StandaloneDeriving #-}
{-# LANGUAGE TypeFamilies #-}
module Graphics.Color.Space.RGB.Derived.SRGB
( SRGB
, SRGB.primaries
, SRGB.transfer
, SRGB.itransfer
, module Graphics.Color.Space
) where
import Foreign.Storable
import Graphics.Color.Model.Alpha
import Graphics.Color.Model.Internal
import qualified Graphics.Color.Model.RGB as CM
import Graphics.Color.Space
import Graphics.Color.Space.RGB.Luma
import qualified Graphics.Color.Space.RGB.SRGB as SRGB
data SRGB (i :: k)
newtype instance Color (SRGB i) e = SRGB (Color CM.RGB e)
deriving instance Eq e => Eq (Color (SRGB i) e)
deriving instance Ord e => Ord (Color (SRGB i) e)
deriving instance Functor (Color (SRGB i))
deriving instance Applicative (Color (SRGB i))
deriving instance Foldable (Color (SRGB i))
deriving instance Traversable (Color (SRGB i))
deriving instance Storable e => Storable (Color (SRGB i) e)
instance (Illuminant i, Elevator e) => Show (Color (SRGB (i :: k)) e) where
showsPrec _ = showsColorModel
instance (Illuminant i, Elevator e) => ColorModel (SRGB (i :: k)) e where
type Components (SRGB i) e = (e, e, e)
toComponents = toComponents . unColorRGB
{-# INLINE toComponents #-}
fromComponents = mkColorRGB . fromComponents
{-# INLINE fromComponents #-}
instance (Illuminant i, Elevator e) => ColorSpace (SRGB i) i e where
type BaseModel (SRGB i) = CM.RGB
toBaseSpace = id
{-# INLINE toBaseSpace #-}
fromBaseSpace = id
{-# INLINE fromBaseSpace #-}
luminance = rgbLuminance . fmap toRealFloat
{-# INLINE luminance #-}
toColorXYZ = rgb2xyz . fmap toRealFloat
{-# INLINE toColorXYZ #-}
fromColorXYZ = fmap fromRealFloat . xyz2rgb
{-# INLINE fromColorXYZ #-}
instance Illuminant i => RedGreenBlue (SRGB i) i where
gamut = SRGB.primaries
ecctf = fmap SRGB.transfer
{-# INLINE ecctf #-}
dcctf = fmap SRGB.itransfer
{-# INLINE dcctf #-}
instance Luma (SRGB i) where
rWeight = 0.299
gWeight = 0.587
bWeight = 0.114