28 lines
803 B
Haskell
28 lines
803 B
Haskell
{-# LANGUAGE OverloadedStrings #-}
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-- Common backlight plugin bits
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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.BacklightCommon (startBacklight) where
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import Data.Internal.DBus
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import RIO
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import qualified RIO.Text as T
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import Xmobar.Plugins.Common
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startBacklight
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:: (MonadUnliftIO m, RealFrac a)
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=> ((Maybe a -> m ()) -> SesClient -> m ())
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-> (SesClient -> m (Maybe a))
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-> T.Text
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-> Callback
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-> m ()
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startBacklight matchSignal callGetBrightness icon cb = do
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withDBusClientConnection cb $ \c -> do
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matchSignal dpy c
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dpy =<< callGetBrightness c
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where
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formatBrightness b = return $ T.concat [icon, T.pack $ show (round b :: Integer), "%"]
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dpy = displayMaybe cb formatBrightness
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