diff options
Diffstat (limited to 'src/Plugins')
| -rw-r--r-- | src/Plugins/Monitors.hs | 4 | ||||
| -rw-r--r-- | src/Plugins/Monitors/Bright.hs | 118 |
2 files changed, 122 insertions, 0 deletions
diff --git a/src/Plugins/Monitors.hs b/src/Plugins/Monitors.hs index c4688a7..5e1cb62 100644 --- a/src/Plugins/Monitors.hs +++ b/src/Plugins/Monitors.hs @@ -27,6 +27,7 @@ import Plugins.Monitors.Swap import Plugins.Monitors.Cpu import Plugins.Monitors.MultiCpu import Plugins.Monitors.Batt +import Plugins.Monitors.Bright import Plugins.Monitors.Thermal import Plugins.Monitors.ThermalZone import Plugins.Monitors.CpuFreq @@ -56,6 +57,7 @@ data Monitors = Weather Station Args Rate | Cpu Args Rate | MultiCpu Args Rate | Battery Args Rate + | Brightness Args Rate | CpuFreq Args Rate | CoreTemp Args Rate | TopProc Args Rate @@ -93,6 +95,7 @@ instance Exec Monitors where alias (MultiCpu _ _) = "multicpu" alias (Battery _ _) = "battery" alias (BatteryP _ _ _)= "battery" + alias (Brightness _ _) = "bright" alias (CpuFreq _ _) = "cpufreq" alias (TopProc _ _) = "top" alias (TopMem _ _) = "topmem" @@ -122,6 +125,7 @@ instance Exec Monitors where start (Swap a r) = runM a swapConfig runSwap r start (Battery a r) = runM a battConfig runBatt r start (BatteryP s a r) = runM a battConfig (runBatt' s) r + start (Brightness a r) = runM a brightConfig runBright r start (CpuFreq a r) = runM a cpuFreqConfig runCpuFreq r start (CoreTemp a r) = runM a coreTempConfig runCoreTemp r start (DiskU s a r) = runM a diskUConfig (runDiskU s) r diff --git a/src/Plugins/Monitors/Bright.hs b/src/Plugins/Monitors/Bright.hs new file mode 100644 index 0000000..499e5bc --- /dev/null +++ b/src/Plugins/Monitors/Bright.hs @@ -0,0 +1,118 @@ +----------------------------------------------------------------------------- +---- | +---- Module : Plugins.Monitors.Birght +---- Copyright : (c) Martin Perner +---- License : BSD-style (see LICENSE) +---- +---- Maintainer : Martin Perner <martin@perner.cc> +---- Stability : unstable +---- Portability : unportable +---- +---- A screen brightness monitor for Xmobar +---- +------------------------------------------------------------------------------- + +module Plugins.Monitors.Bright (brightConfig, runBright) where + +import Plugins.Monitors.Common +import qualified Data.ByteString.Lazy.Char8 as B +import Data.Char +import System.FilePath ((</>)) +import System.Posix.Files (fileExist) +import System.Console.GetOpt + +data BrightOpts = BrightOpts + { subDir :: String + , currBright :: String + , maxBright :: String + } + +defaultOpts :: BrightOpts +defaultOpts = BrightOpts + { subDir = "acpi_video0" + , currBright = "actual_brightness" + , maxBright = "max_brightness" + } + +options :: [OptDescr (BrightOpts -> BrightOpts)] +options = + [ Option "D" ["device"] (ReqArg (\x o -> o { subDir = x }) "") "" + , Option "C" ["curr"] (ReqArg (\x o -> o { currBright = x }) "") "" + , Option "M" ["max"] (ReqArg (\x o -> o { maxBright = x }) "") "" + ] + +-- from Batt.hs +parseOpts :: [String] -> IO BrightOpts +parseOpts argv = + case getOpt Permute options argv of + (o, _, []) -> return $ foldr id defaultOpts o + (_, _, errs) -> ioError . userError $ concat errs + +sysDir :: FilePath +sysDir = "/sys/class/backlight/" + +brightConfig :: IO MConfig +brightConfig = mkMConfig + "<percent>" -- template + ["hbar", "percent", "bar"] -- replacements + +data Files = Files + { fCurr :: String + , fMax :: String + } | NoFiles + +brightFiles :: BrightOpts -> IO Files +brightFiles opts = + do + is_curr <- fileExist $ (fCurr files) + is_max <- fileExist $ (fCurr files) + if is_curr && is_max + then return files + else return NoFiles + where + prefix = sysDir </> (subDir opts) + files = Files { fCurr = prefix </> (currBright opts) + , fMax = prefix </> (maxBright opts) + } + + +runBright :: [String] -> Monitor String +runBright args = do + opts <- io $ parseOpts args + f <- io $ brightFiles opts + c <- io $ readBright f + case f of + NoFiles -> return "hurz" + _ -> do x <- fmtPercent c + parseTemplate (x) + where + fmtPercent :: Float -> Monitor [String] + fmtPercent c = do + r <- showHorizontalBar (100 * c) + s <- showPercentWithColors c + t <- showPercentBar (100 * c) c + return [r,s,t] + +readBright :: Files -> IO Float +readBright NoFiles = return 0 +readBright files = + do + currVal<- grab $ (fCurr files) + maxVal <- grab $ (fMax files) + return $ (currVal / maxVal) + where + grab f = catch (fmap (read . B.unpack) $ B.readFile f)(\_ -> return 0) + + +showHorizontalBar :: Float -> Monitor String +showHorizontalBar x = do + return $ [convert x] + where + convert :: Float -> Char + convert val + | t <= 9600 = ' ' + | t > 9608 = chr 9608 + | otherwise = chr t + where + -- we scale from 0 to 100, we have 8 slots (9 elements), 100/8 = 12 + t = 9600 + ((round val) `div` 12) |