30 lines
902 B
Haskell
30 lines
902 B
Haskell
{-# LANGUAGE LambdaCase #-}
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--------------------------------------------------------------------------------
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-- | Intel backlight plugin
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--
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-- Use the custom DBus interface exported by the XMonad process so I can react
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-- to signals spawned by commands
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module Xmobar.Plugins.IntelBacklight (IntelBacklight(..)) where
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import Control.Concurrent
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import Control.Monad
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import Xmobar
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import XMonad.Internal.DBus.IntelBacklight
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newtype IntelBacklight = IntelBacklight String deriving (Read, Show)
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instance Exec IntelBacklight where
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alias (IntelBacklight _) = "intelbacklight"
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start (IntelBacklight icon) cb = do
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_ <- matchSignal $ cb . formatBrightness
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cb . formatBrightness =<< callGetBrightness
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forever (threadDelay 5000000)
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where
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formatBrightness = \case
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Just b -> icon ++ show (b `div` 100) ++ "%"
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Nothing -> "N/A"
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