xmonad-config/lib/Xmobar/Plugins/Screensaver.hs

33 lines
985 B
Haskell

{-# LANGUAGE LambdaCase #-}
--------------------------------------------------------------------------------
-- | Screensaver plugin
--
-- Use the custom DBus interface exported by the XMonad process so I can react
-- to signals spawned by commands
module Xmobar.Plugins.Screensaver (Screensaver(..)) where
import Control.Concurrent
import Control.Monad
import Xmobar
import XMonad.Hooks.DynamicLog (xmobarColor)
import XMonad.Internal.DBus.Screensaver
newtype Screensaver = Screensaver (String, String, String)
deriving (Read, Show)
instance Exec Screensaver where
alias (Screensaver _) = "screensaver"
start (Screensaver (text, colorOn, colorOff)) cb = do
_ <- matchSignal $ cb . fmtState
cb . fmtState =<< callQuery
forever (threadDelay 5000000)
where
fmtState = \case
Just s -> xmobarColor (if s then colorOn else colorOff) "" text
Nothing -> "N/A"