118 lines
3.1 KiB
Haskell
118 lines
3.1 KiB
Haskell
{-# LANGUAGE OverloadedStrings #-}
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--------------------------------------------------------------------------------
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-- DBus module for Intel Backlight control
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module XMonad.Internal.DBus.Brightness.IntelBacklight
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( callGetBrightnessIB
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, matchSignalIB
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, exportIntelBacklight
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, intelBacklightControls
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, intelBacklightSignalDep
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, blPath
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)
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where
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import DBus
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import Data.Int (Int32)
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import Data.Internal.DBus
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import Data.Internal.Dependency
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import RIO.FilePath
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import XMonad.Internal.DBus.Brightness.Common
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import XMonad.Internal.IO
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--------------------------------------------------------------------------------
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-- Low level sysfs functions
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type Brightness = Float
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type RawBrightness = Int32
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type RawBounds = (RawBrightness, RawBrightness)
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steps :: Int
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steps = 16
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minRawBrightness :: RawBrightness
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minRawBrightness = 1
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backlightDir :: FilePath
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backlightDir = "/sys/class/backlight/intel_backlight/"
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maxFile :: FilePath
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maxFile = backlightDir </> "max_brightness"
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curFile :: FilePath
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curFile = backlightDir </> "brightness"
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getMaxRawBrightness :: IO RawBrightness
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getMaxRawBrightness = readInt maxFile
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getBrightness :: RawBounds -> IO Brightness
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getBrightness bounds = readPercent bounds curFile
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minBrightness :: RawBounds -> IO Brightness
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minBrightness bounds = writePercentMin bounds curFile
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maxBrightness :: RawBounds -> IO Brightness
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maxBrightness bounds = writePercentMax bounds curFile
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incBrightness :: RawBounds -> IO Brightness
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incBrightness = incPercent steps curFile
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decBrightness :: RawBounds -> IO Brightness
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decBrightness = decPercent steps curFile
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--------------------------------------------------------------------------------
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-- DBus interface
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blPath :: ObjectPath
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blPath = objectPath_ "/intelbacklight"
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interface :: InterfaceName
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interface = interfaceName_ "org.xmonad.Brightness"
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intelBacklightConfig :: BrightnessConfig RawBrightness Brightness
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intelBacklightConfig =
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BrightnessConfig
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{ bcMin = minBrightness
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, bcMax = maxBrightness
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, bcInc = incBrightness
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, bcDec = decBrightness
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, bcGet = getBrightness
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, bcGetMax = getMaxRawBrightness
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, bcMinRaw = minRawBrightness
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, bcPath = blPath
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, bcInterface = interface
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, bcName = "Intel backlight"
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}
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--------------------------------------------------------------------------------
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-- Exported haskell API
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curFileDep :: IODependency_
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curFileDep = pathRW curFile []
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maxFileDep :: IODependency_
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maxFileDep = pathR maxFile []
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intelBacklightSignalDep :: DBusDependency_ SesClient
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intelBacklightSignalDep = signalDep intelBacklightConfig
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exportIntelBacklight :: Maybe SesClient -> SometimesIO
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exportIntelBacklight =
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brightnessExporter
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xpfIntelBacklight
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[]
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[curFileDep, maxFileDep]
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intelBacklightConfig
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intelBacklightControls :: Maybe SesClient -> BrightnessControls
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intelBacklightControls = brightnessControls xpfIntelBacklight intelBacklightConfig
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callGetBrightnessIB :: SesClient -> IO (Maybe Brightness)
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callGetBrightnessIB = callGetBrightness intelBacklightConfig
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matchSignalIB :: (Maybe Brightness -> IO ()) -> SesClient -> IO ()
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matchSignalIB = matchSignal intelBacklightConfig
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