28 lines
690 B
Haskell
28 lines
690 B
Haskell
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module Stylix.Output ( makeOutputTable ) where
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import Data.Colour ( RGB(RGB) )
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import qualified Data.Vector as V
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import Data.Word ( Word8 )
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import Text.JSON ( JSObject, toJSObject )
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import Text.Printf ( printf )
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toHexNum :: Double -> Word8
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toHexNum = truncate
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{- |
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Convert a colour to a hexdecimal string.
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>>> toHex (RGB 255 255 255)
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"ffffff"
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-}
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toHex :: RGB -> String
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toHex (RGB r g b) = printf "%02x%02x%02x" (toHexNum r) (toHexNum g) (toHexNum b)
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-- | Convert a palette to the JSON format expected by Stylix's NixOS modules.
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makeOutputTable :: V.Vector RGB -> JSObject String
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makeOutputTable
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= toJSObject
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. V.toList
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. V.imap (\i c -> (printf "base%02X" i, c))
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. V.map toHex
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