xmonad-config/lib/XMonad/Internal/Command/Power.hs

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--------------------------------------------------------------------------------
-- | Commands for controlling power
module XMonad.Internal.Command.Power
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( runHibernate
, runOptimusPrompt
, runPowerOff
, runPowerPrompt
, runReboot
, runScreenLock
, runSuspend
, runSuspendPrompt
, runQuitPrompt
, hasBattery
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) where
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import Control.Arrow (first)
import Data.Either
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import qualified Data.Map as M
import Graphics.X11.Types
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import System.Directory
import System.Exit
import System.FilePath.Posix
import System.IO.Error
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import XMonad.Core
import XMonad.Internal.Dependency
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import XMonad.Internal.Shell
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import qualified XMonad.Internal.Theme as T
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import XMonad.Prompt
import XMonad.Prompt.ConfirmPrompt
--------------------------------------------------------------------------------
-- | Executables
myScreenlock :: String
myScreenlock = "screenlock"
myOptimusManager :: String
myOptimusManager = "optimus-manager"
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--------------------------------------------------------------------------------
-- | Core commands
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runScreenLock :: Feature (X ())
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runScreenLock = featureExe "screen locker" myScreenlock
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runPowerOff :: X ()
runPowerOff = spawn "systemctl poweroff"
runSuspend :: X ()
runSuspend = spawn "systemctl suspend"
runHibernate :: X ()
runHibernate = spawn "systemctl hibernate"
runReboot :: X ()
runReboot = spawn "systemctl reboot"
--------------------------------------------------------------------------------
-- | Confirm prompt wrappers
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-- TODO doesn't this need to also lock the screen?
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runSuspendPrompt :: X ()
runSuspendPrompt = confirmPrompt T.promptTheme "suspend?" runSuspend
runQuitPrompt :: X ()
runQuitPrompt = confirmPrompt T.promptTheme "quit?" $ io exitSuccess
--------------------------------------------------------------------------------
-- | Nvidia Optimus
-- TODO for some reason the screen never wakes up after suspend when
-- the nvidia card is up, so block suspend if nvidia card is running
-- and warn user
isUsingNvidia :: IO Bool
isUsingNvidia = doesDirectoryExist "/sys/module/nvidia"
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hasBattery :: IO (Maybe String)
hasBattery = do
ps <- fromRight [] <$> tryIOError (listDirectory syspath)
ts <- mapM readType ps
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return $ if "Battery\n" `elem` ts then Nothing else Just "battery not found"
where
readType p = fromRight [] <$> tryIOError (readFile $ syspath </> p </> "type")
syspath = "/sys/class/power_supply"
runOptimusPrompt' :: X ()
runOptimusPrompt' = do
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nvidiaOn <- io isUsingNvidia
switch $ if nvidiaOn then "integrated" else "nvidia"
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where
switch mode = confirmPrompt T.promptTheme (prompt mode) (cmd mode)
prompt mode = "gpu switch to " ++ mode ++ "?"
cmd mode = spawn $
"prime-offload"
#!&& unwords [myOptimusManager, "--switch", mode, "--no-confirm"]
#!&& "killall xmonad"
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runOptimusPrompt :: FeatureX
runOptimusPrompt = featureDefault "graphics switcher" (Only $ exe myOptimusManager)
runOptimusPrompt'
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--------------------------------------------------------------------------------
-- | Universal power prompt
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data PowerMaybeAction = Poweroff
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| Shutdown
| Hibernate
| Reboot
deriving (Eq)
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instance Enum PowerMaybeAction where
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toEnum 0 = Poweroff
toEnum 1 = Shutdown
toEnum 2 = Hibernate
toEnum 3 = Reboot
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toEnum _ = errorWithoutStackTrace "Main.Enum.PowerMaybeAction.toEnum: bad argument"
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fromEnum Poweroff = 0
fromEnum Shutdown = 1
fromEnum Hibernate = 2
fromEnum Reboot = 3
data PowerPrompt = PowerPrompt
instance XPrompt PowerPrompt where
showXPrompt PowerPrompt = "(P)oweroff (S)uspend (H)ibernate (R)eboot:"
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runPowerPrompt :: X () -> X ()
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runPowerPrompt lock = mkXPrompt PowerPrompt theme comp executeMaybeAction
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where
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comp = mkComplFunFromList theme []
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theme = T.promptTheme { promptKeymap = keymap }
keymap = M.fromList
$ ((controlMask, xK_g), quit) :
map (first $ (,) 0)
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[ (xK_p, sendMaybeAction Poweroff)
, (xK_s, sendMaybeAction Shutdown)
, (xK_h, sendMaybeAction Hibernate)
, (xK_r, sendMaybeAction Reboot)
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, (xK_Return, quit)
, (xK_Escape, quit)
]
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sendMaybeAction a = setInput (show $ fromEnum a) >> setSuccess True >> setDone True
executeMaybeAction a = case toEnum $ read a of
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Poweroff -> runPowerOff
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Shutdown -> lock >> runSuspend
Hibernate -> lock >> runHibernate
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Reboot -> runReboot