xmonad-config/bin/xmobar.hs

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{-# LANGUAGE OverloadedStrings #-}
-- | Xmobar binary
--
-- Features:
-- * Uses the 'UnsafeStdinReader' to receive the current workspace/layout config
-- from xmonad
-- * FontAwesome and Symbol fonts for icons
-- * Some custom plugins (imported below)
-- * Theme integration with xmonad (shared module imported below)
-- * A custom Locks plugin from my own forked repo
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module Main (main) where
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import Data.Internal.DBus
import Data.Internal.Dependency
import RIO hiding (hFlush)
import qualified RIO.ByteString.Lazy as BL
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import RIO.List
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import RIO.Process
import qualified RIO.Text as T
import System.IO
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import UnliftIO.Environment
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import XMonad.Core hiding (config)
import XMonad.Internal.Command.Desktop
import XMonad.Internal.Command.Power
import XMonad.Internal.DBus.Brightness.ClevoKeyboard
import XMonad.Internal.DBus.Brightness.IntelBacklight
import XMonad.Internal.DBus.Control
import XMonad.Internal.DBus.Screensaver (ssSignalDep)
import qualified XMonad.Internal.Theme as XT
import Xmobar hiding
( iconOffset
, run
)
import Xmobar.Plugins.Bluetooth
import Xmobar.Plugins.ClevoKeyboard
import Xmobar.Plugins.Common
import Xmobar.Plugins.Device
import Xmobar.Plugins.IntelBacklight
import Xmobar.Plugins.Screensaver
import Xmobar.Plugins.VPN
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main :: IO ()
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main = getArgs >>= parse
parse :: [String] -> IO ()
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parse [] = run
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parse ["--deps"] = withCache printDeps
parse ["--test"] = void $ withCache . evalConfig =<< connectDBus
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parse _ = usage
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run :: IO ()
run = do
db <- connectDBus
c <- withCache $ evalConfig db
disconnectDBus db
-- this is needed to see any printed messages
hFlush stdout
xmobar c
evalConfig :: DBusState -> FIO Config
evalConfig db = do
cs <- getAllCommands <$> rightPlugins db
bf <- getTextFont
(ifs, ios) <- getIconFonts
d <- io $ cfgDir <$> getDirectories
return $ config bf ifs ios cs d
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printDeps :: FIO ()
printDeps = do
db <- io connectDBus
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let ps = sort $ nub $ fmap showFulfillment $ concatMap dumpFeature $ allFeatures db
io $ mapM_ (putStrLn . T.unpack) ps
io $ disconnectDBus db
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usage :: IO ()
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usage =
putStrLn $
intercalate
"\n"
[ "xmobar: run greatest taskbar"
, "xmobar --deps: print dependencies"
]
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--------------------------------------------------------------------------------
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-- toplevel configuration
-- | The text font family
textFont :: Always XT.FontBuilder
textFont = fontAlways "XMobar Text Font" "DejaVu Sans Mono" defFontPkgs
-- | Offset of the text in the bar
textFontOffset :: Int
textFontOffset = 16
-- | Attributes for the bar font (size, weight, etc)
textFontData :: XT.FontData
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textFontData = XT.defFontData {XT.weight = Just XT.Bold, XT.size = Just 11}
-- | The icon font family
iconFont :: Sometimes XT.FontBuilder
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iconFont =
fontSometimes
"XMobar Icon Font"
"Symbols Nerd Font"
[Package Official "ttf-nerd-fonts-symbols-2048-em"]
-- | Offsets for the icons in the bar (relative to the text offset)
iconOffset :: BarFont -> Int
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iconOffset IconSmall = 0
iconOffset IconMedium = 1
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iconOffset IconLarge = 1
iconOffset IconXLarge = 2
-- | Sizes (in pixels) for the icon fonts
iconSize :: BarFont -> Int
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iconSize IconSmall = 13
iconSize IconMedium = 15
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iconSize IconLarge = 18
iconSize IconXLarge = 20
-- | Attributes for icon fonts
iconFontData :: Int -> XT.FontData
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iconFontData s = XT.defFontData {XT.pixelsize = Just s, XT.size = Nothing}
-- | Global configuration
-- Note that the 'font' and 'textOffset' are assumed to pertain to one (and
-- only one) text font, and all other fonts are icon fonts. If this assumption
-- changes the code will need to change significantly
config :: T.Text -> [T.Text] -> [Int] -> BarRegions -> FilePath -> Config
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config bf ifs ios br confDir =
defaultConfig
{ font = T.unpack bf
, additionalFonts = fmap T.unpack ifs
, textOffset = textFontOffset
, textOffsets = ios
, bgColor = T.unpack XT.bgColor
, fgColor = T.unpack XT.fgColor
, position = BottomSize C 100 24
, border = NoBorder
, borderColor = T.unpack XT.bordersColor
, sepChar = T.unpack pSep
, alignSep = [lSep, rSep]
, template = T.unpack $ fmtRegions br
, lowerOnStart = False
, hideOnStart = False
, allDesktops = True
, overrideRedirect = True
, pickBroadest = False
, persistent = True
, -- store the icons with the xmonad/xmobar stack project
iconRoot = confDir ++ "/icons"
, commands = csRunnable <$> concatRegions br
}
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--------------------------------------------------------------------------------
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-- plugin features
--
-- some commands depend on the presence of interfaces that can only be
-- determined at runtime; define these checks here
getAllCommands :: [Maybe CmdSpec] -> BarRegions
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getAllCommands right =
BarRegions
{ brLeft =
[ CmdSpec
{ csAlias = "UnsafeStdinReader"
, csRunnable = Run UnsafeStdinReader
}
]
, brCenter = []
, brRight = catMaybes right
}
rightPlugins :: DBusState -> FIO [Maybe CmdSpec]
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rightPlugins db =
mapM evalFeature $
allFeatures db
++ [always' "date indicator" dateCmd]
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where
always' n = Right . Always n . Always_ . FallbackAlone
allFeatures :: DBusState -> [Feature CmdSpec]
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allFeatures DBusState {dbSesClient = ses, dbSysClient = sys} =
[ Left getWireless
, Left $ getEthernet sys
, Left $ getVPN sys
, Left $ getBt sys
, Left getAlsa
, Left getBattery
, Left $ getBl ses
, Left $ getCk ses
, Left $ getSs ses
, Right getLock
]
type BarFeature = Sometimes CmdSpec
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-- TODO what if I don't have a wireless card?
getWireless :: BarFeature
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getWireless =
Sometimes
"wireless status indicator"
xpfWireless
[Subfeature (IORoot wirelessCmd $ Only readWireless) "sysfs path"]
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getEthernet :: Maybe SysClient -> BarFeature
getEthernet cl = iconDBus "ethernet status indicator" xpfEthernet root tree
where
root useIcon tree' = DBusRoot (const . ethernetCmd useIcon) tree' cl
tree = And1 (Only readEthernet) (Only_ devDep)
getBattery :: BarFeature
getBattery = iconIO_ "battery level indicator" xpfBattery root tree
where
root useIcon = IORoot_ (batteryCmd useIcon)
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tree =
Only_ $
IOTest_ "Test if battery is present" [] $
io $
fmap (Msg LevelError) <$> hasBattery
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getVPN :: Maybe SysClient -> BarFeature
getVPN cl = iconDBus_ "VPN status indicator" xpfVPN root $ toAnd_ vpnDep test
where
root useIcon tree = DBusRoot_ (const $ vpnCmd useIcon) tree cl
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test =
DBusIO $
IOTest_
"Use nmcli to test if VPN is present"
networkManagerPkgs
vpnPresent
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getBt :: Maybe SysClient -> BarFeature
getBt = xmobarDBus "bluetooth status indicator" xpfBluetooth btDep btCmd
getAlsa :: BarFeature
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getAlsa =
iconIO_ "volume level indicator" (const True) root $
Only_ $
sysExe [Package Official "alsa-utils"] "alsactl"
where
root useIcon = IORoot_ (alsaCmd useIcon)
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getBl :: Maybe SesClient -> BarFeature
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getBl =
xmobarDBus
"Intel backlight indicator"
xpfIntelBacklight
intelBacklightSignalDep
blCmd
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getCk :: Maybe SesClient -> BarFeature
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getCk =
xmobarDBus
"Clevo keyboard indicator"
xpfClevoBacklight
clevoKeyboardSignalDep
ckCmd
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getSs :: Maybe SesClient -> BarFeature
getSs = xmobarDBus "screensaver indicator" (const True) ssSignalDep ssCmd
getLock :: Always CmdSpec
getLock = always1 "lock indicator" "icon indicator" root $ lockCmd fontifyAlt
where
root = IORoot_ (lockCmd fontifyIcon) $ Only_ iconDependency
--------------------------------------------------------------------------------
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-- bar feature constructors
xmobarDBus
:: SafeClient c
=> T.Text
-> XPQuery
-> DBusDependency_ c
-> (Fontifier -> CmdSpec)
-> Maybe c
-> BarFeature
xmobarDBus n q dep cmd cl = iconDBus_ n q root (Only_ dep)
where
root useIcon tree = DBusRoot_ (const $ cmd useIcon) tree cl
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iconIO_
:: T.Text
-> XPQuery
-> (Fontifier -> IOTree_ -> Root CmdSpec)
-> IOTree_
-> BarFeature
iconIO_ = iconSometimes' And_ Only_
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iconDBus
:: SafeClient c
=> T.Text
-> XPQuery
-> (Fontifier -> DBusTree c p -> Root CmdSpec)
-> DBusTree c p
-> BarFeature
iconDBus = iconSometimes' And1 $ Only_ . DBusIO
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iconDBus_
:: SafeClient c
=> T.Text
-> XPQuery
-> (Fontifier -> DBusTree_ c -> Root CmdSpec)
-> DBusTree_ c
-> BarFeature
iconDBus_ = iconSometimes' And_ $ Only_ . DBusIO
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iconSometimes'
:: (t -> t_ -> t)
-> (IODependency_ -> t_)
-> T.Text
-> XPQuery
-> (Fontifier -> t -> Root CmdSpec)
-> t
-> BarFeature
iconSometimes' c d n q r t =
Sometimes
n
q
[ Subfeature icon "icon indicator"
, Subfeature text "text indicator"
]
where
icon = r fontifyIcon $ c t $ d iconDependency
text = r fontifyAlt t
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--------------------------------------------------------------------------------
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-- command specifications
data BarRegions = BarRegions
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{ brLeft :: [CmdSpec]
, brCenter :: [CmdSpec]
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, brRight :: [CmdSpec]
}
deriving (Show)
data CmdSpec = CmdSpec
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{ csAlias :: T.Text
, csRunnable :: Runnable
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}
deriving (Show)
concatRegions :: BarRegions -> [CmdSpec]
concatRegions (BarRegions l c r) = l ++ c ++ r
wirelessCmd :: T.Text -> CmdSpec
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wirelessCmd iface =
CmdSpec
{ csAlias = T.append iface "wi"
, csRunnable = Run $ Wireless (T.unpack iface) args 5
}
where
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args =
fmap
T.unpack
[ "-t"
, "<qualityipat><essid>"
, "--"
, "--quality-icon-pattern"
, "<icon=wifi_%%.xpm/>"
]
ethernetCmd :: Fontifier -> T.Text -> CmdSpec
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ethernetCmd fontify iface =
CmdSpec
{ csAlias = iface
, csRunnable =
Run $
Device (iface, fontify IconMedium "\xf0e8" "ETH", colors)
}
batteryCmd :: Fontifier -> CmdSpec
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batteryCmd fontify =
CmdSpec
{ csAlias = "battery"
, csRunnable = Run $ Battery args 50
}
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where
fontify' = fontify IconSmall
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args =
fmap
T.unpack
[ "--template"
, "<acstatus><left>"
, "--Low"
, "10"
, "--High"
, "80"
, "--low"
, "red"
, "--normal"
, XT.fgColor
, "--high"
, XT.fgColor
, "--"
, "-P"
, "-o"
, fontify' "\xf0e7" "BAT"
, "-O"
, fontify' "\xf1e6" "AC"
, "-i"
, fontify' "\xf1e6" "AC"
]
vpnCmd :: Fontifier -> CmdSpec
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vpnCmd fontify =
CmdSpec
{ csAlias = vpnAlias
, csRunnable = Run $ VPN (fontify IconMedium "\xf023" "VPN", colors)
}
btCmd :: Fontifier -> CmdSpec
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btCmd fontify =
CmdSpec
{ csAlias = btAlias
, csRunnable =
Run $
Bluetooth (fontify' "\xf5b0" "+", fontify' "\xf5ae" "-") colors
}
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where
fontify' i = fontify IconLarge i . T.append "BT"
alsaCmd :: Fontifier -> CmdSpec
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alsaCmd fontify =
CmdSpec
{ csAlias = "alsa:default:Master"
, csRunnable =
Run $
Alsa "default" "Master" $
fmap
T.unpack
[ "-t"
, "<status><volume>%"
, "--"
, "-O"
, fontify' "\xf028" "+"
, "-o"
, T.append (fontify' "\xf026" "-") " "
, "-c"
, XT.fgColor
, "-C"
, XT.fgColor
]
}
where
fontify' i = fontify IconSmall i . T.append "VOL"
blCmd :: Fontifier -> CmdSpec
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blCmd fontify =
CmdSpec
{ csAlias = blAlias
, csRunnable = Run $ IntelBacklight $ fontify IconSmall "\xf185" "BL: "
}
ckCmd :: Fontifier -> CmdSpec
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ckCmd fontify =
CmdSpec
{ csAlias = ckAlias
, csRunnable = Run $ ClevoKeyboard $ fontify IconSmall "\xf40b" "KB: "
}
ssCmd :: Fontifier -> CmdSpec
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ssCmd fontify =
CmdSpec
{ csAlias = ssAlias
, csRunnable = Run $ Screensaver (fontify IconSmall "\xf254" "SS", colors)
}
lockCmd :: Fontifier -> CmdSpec
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lockCmd fontify =
CmdSpec
{ csAlias = "locks"
, csRunnable =
Run $
Locks $
fmap
T.unpack
[ "-N"
, numIcon
, "-n"
, disabledColor numIcon
, "-C"
, capIcon
, "-c"
, disabledColor capIcon
, "-s"
, ""
, "-S"
, ""
, "-d"
, " "
]
}
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where
numIcon = fontify' "\xf8a5" "N"
capIcon = fontify' "\xf657" "C"
fontify' = fontify IconXLarge
disabledColor = xmobarFGColor XT.backdropFgColor
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dateCmd :: CmdSpec
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dateCmd =
CmdSpec
{ csAlias = "date"
, csRunnable = Run $ Date "%Y-%m-%d %H:%M:%S " "date" 10
}
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--------------------------------------------------------------------------------
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-- low-level testing functions
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vpnPresent :: FIO (Maybe Msg)
vpnPresent = do
res <- proc "nmcli" args readProcess
return $ case res of
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(ExitSuccess, out, _)
| "vpn" `elem` BL.split 10 out -> Nothing
| otherwise -> Just $ Msg LevelError "vpn not found"
(ExitFailure c, _, err) ->
Just $
Msg LevelError $
T.concat
[ "vpn search exited with code "
, T.pack $ show c
, ": "
, T.decodeUtf8With T.lenientDecode $
BL.toStrict err
]
where
args = ["-c", "no", "-t", "-f", "TYPE", "c", "show"]
--------------------------------------------------------------------------------
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-- text font
--
-- ASSUME there is only one text font for this entire configuration. This
-- will correspond to the first font/offset parameters in the config record.
getTextFont :: FIO T.Text
getTextFont = do
fb <- evalAlways textFont
return $ fb textFontData
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--------------------------------------------------------------------------------
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-- icon fonts
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getIconFonts :: FIO ([T.Text], [Int])
getIconFonts = do
fb <- evalSometimes iconFont
return $ maybe ([], []) apply fb
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where
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apply fb =
unzip $
(\i -> (iconString fb i, iconOffset i + textFontOffset))
<$> iconFonts
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data BarFont
= IconSmall
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| IconMedium
| IconLarge
| IconXLarge
deriving (Eq, Enum, Bounded, Show)
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iconFonts :: [BarFont]
iconFonts = enumFrom minBound
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iconString :: XT.FontBuilder -> BarFont -> T.Text
iconString fb i = fb $ iconFontData $ iconSize i
iconDependency :: IODependency_
iconDependency = IOSometimes_ iconFont
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fontifyText :: BarFont -> T.Text -> T.Text
fontifyText fnt txt =
T.concat ["<fn=", T.pack $ show $ 1 + fromEnum fnt, ">", txt, "</fn>"]
type Fontifier = BarFont -> T.Text -> T.Text -> T.Text
fontifyAlt :: Fontifier
fontifyAlt _ _ alt = alt
fontifyIcon :: Fontifier
fontifyIcon f i _ = fontifyText f i
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--------------------------------------------------------------------------------
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-- various formatting things
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colors :: Colors
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colors = Colors {colorsOn = XT.fgColor, colorsOff = XT.backdropFgColor}
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sep :: T.Text
sep = xmobarFGColor XT.backdropFgColor " : "
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lSep :: Char
lSep = '}'
rSep :: Char
rSep = '{'
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pSep :: T.Text
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pSep = "%"
fmtSpecs :: [CmdSpec] -> T.Text
fmtSpecs = T.intercalate sep . fmap go
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where
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go CmdSpec {csAlias = a} = T.concat [pSep, a, pSep]
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fmtRegions :: BarRegions -> T.Text
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fmtRegions BarRegions {brLeft = l, brCenter = c, brRight = r} =
T.concat
[fmtSpecs l, T.singleton lSep, fmtSpecs c, T.singleton rSep, fmtSpecs r]