35 lines
796 B
Haskell
35 lines
796 B
Haskell
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module Xmobar.Backlight where
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import Control.Monad
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import Control.Concurrent
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import Data.Int (Int32)
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import DBus
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import DBus.Client
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import DBus.Backlight
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import Xmobar
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data Backlight = Backlight (String, String)
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deriving (Read, Show)
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instance Exec Backlight where
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alias (Backlight _) = "betterbacklight"
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start (Backlight _) cb = do
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-- print "connecting"
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client <- connectSession
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_ <- addMatch client brMatcher $ \sig -> do
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cb $ formatSignal sig
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-- print sig
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forever (threadDelay 5000)
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formatSignal :: Signal -> String
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formatSignal sig = -- show $ (map fromVariant $ signalBody sig :: [Maybe Int32])
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case signalBody sig of
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[] -> "N/A"
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(x:_) -> case (fromVariant x :: Maybe Int32) of
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Just i -> show i
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Nothing -> "n/a"
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