MediaKeys.hs

-- | Bind media keys using dbus
-- Requires amixer to control volume.
module XMonad.Util.MediaKeys (-- * default keybindings
                               mediaKeys
                             -- * media control in the 'X' monad
                             , audioPrev
                             , audioNext
                             , audioPlayPause
                             ) where

import qualified Data.Map                     as M
import           Data.Semigroup
import           Graphics.X11.ExtraTypes.XF86
import           Graphics.X11.Types
import           XMonad.Core
import           XMonad.Util.Volume

-- | Given your keymaps, add the media keybindings
mediaKeys :: M.Map (KeyMask, KeySym) (X ()) -> M.Map (KeyMask, KeySym) (X ())
mediaKeys = M.fromList . (<>) mediaKeyList . M.toList

mediaKeyList :: [((KeyMask, KeySym), X ())]
mediaKeyList = [ ((0, xF86XK_AudioNext), audioNext)
               , ((0, xF86XK_AudioPrev), audioPrev)
               , ((0, xF86XK_AudioPlay), audioPlayPause)
               , ((0, xF86XK_AudioMute), toggleMute)
               , ((0, xF86XK_AudioLowerVolume), lowerVolume (5 :: Word))
               , ((0, xF86XK_AudioRaiseVolume), raiseVolume (5 :: Word))
               ]

-- | Helper function for use with dbus
sp :: String -> X ()
sp = spawn . (<>) "dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.mpris.MediaPlayer2.Player."

-- | Action in the 'X' monad to go to next
audioNext :: X ()
audioNext      = sp "Next"

-- | Action in the 'X' monad to go the previous
audioPrev :: X ()
audioPrev      = sp "Previous"

-- | Action in the 'X' monad to play/pause
audioPlayPause :: X ()
audioPlayPause = sp "PlayPause"