diff options
Diffstat (limited to 'xmobar.hs')
| -rw-r--r-- | xmobar.hs | 109 |
1 files changed, 76 insertions, 33 deletions
@@ -12,27 +12,52 @@ -- ----------------------------------------------------------------------------- -module Main where +module Main ( -- * Configuration + -- $config + Config (..), + -- * Main Stuff + -- $main + main + , eventLoop + , createWin + , drawInWin + -- * Printing + -- $print + , printStrings + -- * Parsing + -- $parser + , stringParse + , stringParser + , defaultColors + , colorsAndText + -- * Unmamaged Windows + -- $unmanwin + , mkUnmanagedWindow + -- * Useful Utilities + , readConfig + , initColor + ) where import Graphics.X11.Xlib import Graphics.X11.Xlib.Misc -import Graphics.X11.Xlib.Extras import Text.ParserCombinators.Parsec -import Control.Concurrent import Control.Monad -import Data.Bits -import System +import System.Environment +-- $config +-- Configuration data type and default configuration + +-- | The configuration data type data Config = - Config { fonts :: String - , bgColor :: String - , fgColor :: String - , xPos :: Int - , yPos :: Int - , width :: Int - , hight :: Int + Config { fonts :: String -- ^ Fonts + , bgColor :: String -- ^ Backgroud color + , fgColor :: String -- ^ Default font color + , xPos :: Int -- ^ x Window position (origin in the upper left corner) + , yPos :: Int -- ^ y Window position + , width :: Int -- ^ Window width + , hight :: Int -- ^ Window hight } deriving (Eq, Show, Read, Ord) defaultConfig :: Config @@ -46,6 +71,9 @@ defaultConfig = , hight = 15 } +-- $main + +-- | The main entry point main :: IO () main = do args <- getArgs @@ -56,13 +84,15 @@ main = else readConfig (args!!0) eventLoop config +-- | The event loop eventLoop :: Config -> IO () eventLoop c = do i <- getLine ps <- stringParse c i w <- createWin c - runWin c w ps + drawInWin c w ps +-- | The function to create the initial window createWin :: Config -> IO (Display, Window) createWin config = do dpy <- openDisplay "" @@ -72,17 +102,17 @@ createWin config = (fromIntegral $ xPos config) (fromIntegral $ yPos config) (fromIntegral $ width config) - (fromIntegral $ hight config) 0 + (fromIntegral $ hight config) mapWindow dpy win return (dpy,win) -runWin :: Config -> (Display, Window) -> [(String, String)] -> IO () -runWin config (dpy, win) str = do - -- get default colors +-- | Draws and updates the window +drawInWin :: Config -> (Display, Window) -> [(String, String)] -> IO () +drawInWin config (dpy, win) str = do + -- get win bgcolor bgcolor <- initColor dpy $ bgColor config - fgcolor <- initColor dpy $ fgColor config - -- window background + -- set window background gc <- createGC dpy win setForeground dpy gc bgcolor fillRectangle dpy win gc 0 0 @@ -104,13 +134,19 @@ runWin config (dpy, win) str = do eventLoop config -{- $print -An easy way to print the stuff we need to print --} +-- $print +-- | An easy way to print the stuff we need to print +printStrings :: Display + -> Drawable + -> GC + -> FontStruct + -> Position + -> [(String, String, Position)] + -> IO () printStrings _ _ _ _ _ [] = return () -printStrings dpy win gc fontst offset (x@(s,c,l):xs) = - do let (_,asc,desc,_) = textExtents fontst s +printStrings dpy win gc fontst offset ((s,c,l):xs) = + do let (_,asc,_,_) = textExtents fontst s color <- initColor dpy c setForeground dpy gc color drawString dpy win gc offset asc s @@ -120,15 +156,19 @@ printStrings dpy win gc fontst offset (x@(s,c,l):xs) = This is suppose do be a parser. Don't trust him. -} +-- | Run the actual parsers stringParse :: Config -> String -> IO [(String, String)] stringParse config s = case (parse (stringParser config) "" s) of - Left err -> return [("Sorry, if I were a decent parser you now would be starring at something meaningful...",(fgColor config))] + Left _ -> return [("Sorry, if I were a decent parser you now would be starring at something meaningful..." + , (fgColor config))] Right x -> return x +-- | Get the string and combine the needed parsers stringParser :: Config -> Parser [(String, String)] stringParser c = manyTill (choice [colorsAndText c,defaultColors c]) eof +-- | parses a string with default color (no color set) defaultColors :: Config -> Parser (String, String) defaultColors config = do { s <- many $ noneOf "^" @@ -137,6 +177,7 @@ defaultColors config = } <|> colorsAndText config +-- | parses a string with a color set colorsAndText :: Config -> Parser (String, String) colorsAndText config = do { string "^#" @@ -150,11 +191,13 @@ colorsAndText config = {- $unmanwin -This is a way to create unmamaged window. It was a mistery in haskell. +This is a way to create unmamaged window. It was a mistery in Haskell. Till I've found out...;-) -} +-- | Creates a window with the attribute override_redirect set to True. +-- Windows Managers should not touch this kind of windows. mkUnmanagedWindow :: Display -> Screen -> Window @@ -162,9 +205,8 @@ mkUnmanagedWindow :: Display -> Position -> Dimension -> Dimension - -> Pixel -> IO Window -mkUnmanagedWindow dpy scr rw x y w h bgcolor = do +mkUnmanagedWindow dpy scr rw x y w h = do let visual = defaultVisualOfScreen scr attrmask = cWOverrideRedirect window <- allocaSetWindowAttributes $ @@ -175,17 +217,18 @@ mkUnmanagedWindow dpy scr rw x y w h bgcolor = do return window {- $utility - -Utilitis, aka stollen without givin' credit stuff. - +Utilities, aka stollen without givin' credit stuff. -} +-- | Reads the configuration files or quits with an error readConfig :: FilePath -> IO Config readConfig f = do s <- readFile f case reads s of - [(config, str)] -> return config - [] -> error ("corrupt config file: " ++ f) + [(config,_)] -> return config + [] -> error ("Corrupt config file: " ++ f) + _ -> error ("Some problem occured. Aborting...") + -- | Get the Pixel value for a named color initColor :: Display -> String -> IO Pixel |