module Termbox.Internal.Color
  ( Color (..),
    defaultColor,
    red,
    green,
    yellow,
    blue,
    magenta,
    cyan,
    white,
    bright,
    color,
    gray,
  )
where

import Data.Coerce (coerce)
import Data.Word (Word16)
import qualified Termbox.Bindings.Hs

-- | A color.
--
-- There are three classes of colors:
--
-- * Basic named colors and their bright variants, such as 'red' and 'bright' 'blue'.
-- * Miscellaneous colors, such as @'color' 33@.
-- * Monochrome colors that range from black (@'gray' 0@) to white (@'gray' 23@).
newtype Color
  = Color Termbox.Bindings.Hs.Tb_color

defaultColor :: Color
defaultColor :: Color
defaultColor =
  Tb_color -> Color
Color Tb_color
0

red :: Color
red :: Color
red =
  Tb_color -> Color
Color Tb_color
1

green :: Color
green :: Color
green =
  Tb_color -> Color
Color Tb_color
2

yellow :: Color
yellow :: Color
yellow =
  Tb_color -> Color
Color Tb_color
3

blue :: Color
blue :: Color
blue =
  Tb_color -> Color
Color Tb_color
4

magenta :: Color
magenta :: Color
magenta =
  Tb_color -> Color
Color Tb_color
5

cyan :: Color
cyan :: Color
cyan =
  Tb_color -> Color
Color Tb_color
6

white :: Color
white :: Color
white =
  Tb_color -> Color
Color Tb_color
7

-- | Make a basic color brighter.
bright :: Color -> Color
bright :: Color -> Color
bright =
  coerce :: forall a b. Coercible a b => a -> b
coerce Tb_color -> Tb_color
bright_

bright_ :: Termbox.Bindings.Hs.Tb_color -> Termbox.Bindings.Hs.Tb_color
bright_ :: Tb_color -> Tb_color
bright_ Tb_color
c
  | Tb_color
c forall a. Ord a => a -> a -> Bool
<= Tb_color
7 = Tb_color
c forall a. Num a => a -> a -> a
+ Tb_color
8
  | Bool
otherwise = Tb_color
c

-- | A miscellaneous color.
--
-- Valid values are in the range @[0, 215]@; values outside of this range are clamped.
color :: Int -> Color
color :: Int -> Color
color =
  coerce :: forall a b. Coercible a b => a -> b
coerce (forall a b. (Integral a, Num b) => a -> b
fromIntegral @Int @Word16 forall b c a. (b -> c) -> (a -> b) -> a -> c
. (forall a. Num a => a -> a -> a
+ Int
16) forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a. Ord a => a -> a -> a
max Int
0 forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a. Ord a => a -> a -> a
min Int
215)

-- | A monochrome color; black is 0 and white is 23.
--
-- Valid values are in the range @[0, 23]@; values outside of this range are clamped.
gray :: Int -> Color
gray :: Int -> Color
gray =
  coerce :: forall a b. Coercible a b => a -> b
coerce (forall a b. (Integral a, Num b) => a -> b
fromIntegral @Int @Word16 forall b c a. (b -> c) -> (a -> b) -> a -> c
. (forall a. Num a => a -> a -> a
+ Int
232) forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a. Ord a => a -> a -> a
max Int
0 forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a. Ord a => a -> a -> a
min Int
23)