diff options
| -rw-r--r-- | src/Plugins/Monitors/Bright.hs | 127 |
1 files changed, 56 insertions, 71 deletions
diff --git a/src/Plugins/Monitors/Bright.hs b/src/Plugins/Monitors/Bright.hs index 499e5bc..107bd89 100644 --- a/src/Plugins/Monitors/Bright.hs +++ b/src/Plugins/Monitors/Bright.hs @@ -14,105 +14,90 @@ 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 - } +import Plugins.Monitors.Common + +data BrightOpts = BrightOpts { subDir :: String + , currBright :: String + , maxBright :: String + } defaultOpts :: BrightOpts -defaultOpts = BrightOpts - { subDir = "acpi_video0" - , currBright = "actual_brightness" - , maxBright = "max_brightness" - } +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 }) "") "" - ] +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 + 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 +brightConfig = mkMConfig "<percent>" -- template + ["hbar", "percent", "bar"] -- replacements -data Files = Files - { fCurr :: String - , fMax :: String - } | NoFiles +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) - } - +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] + opts <- io $ parseOpts args + f <- io $ brightFiles opts + c <- io $ readBright f + case f of + NoFiles -> return "hurz" + _ -> fmtPercent c >>= parseTemplate + 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) - +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) + 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) |