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-----------------------------------------------------------------------------
-- |
-- Module : XMonadContrib.Dzen
-- Copyright : (c) glasser@mit.edu
-- License : BSD
--
-- Maintainer : glasser@mit.edu
-- Stability : unstable
-- Portability : unportable
--
-- Handy wrapper for dzen. Requires dzen >= 0.2.4.
--
-----------------------------------------------------------------------------
module XMonadContrib.Dzen (dzen, dzenScreen, seconds) where
import XMonad
import XMonadContrib.Run (runProcessWithInputAndWait, seconds)
toXineramaArg :: ScreenId -> String
toXineramaArg n = show ( ((fromIntegral n)+1)::Int )
-- | @dzen str timeout@ pipes @str@ to dzen2 for @timeout@ microseconds.
-- Example usage:
-- > dzen "Hi, mom!" (5 `seconds`)
dzen :: String -> Int -> X ()
dzen str timeout = dzenWithArgs str [] timeout
-- | @dzenScreen sc str timeout@ pipes @str@ to dzen2 for @timeout@ microseconds, and on screen @sc@.
-- Requires dzen to be compiled with Xinerama support.
dzenScreen :: ScreenId -> String -> Int -> X()
dzenScreen sc str timeout = dzenWithArgs str ["-xs", screen] timeout
where screen = toXineramaArg sc
dzenWithArgs :: String -> [String] -> Int -> X ()
dzenWithArgs str args timeout = io $ runProcessWithInputAndWait "dzen2" args (unchomp str) timeout
-- dzen seems to require the input to terminate with exactly one newline.
where unchomp s@['\n'] = s
unchomp [] = ['\n']
unchomp (c:cs) = c : unchomp cs
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