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Diffstat (limited to 'XMonad/Hooks/DynamicLog.hs')
| -rw-r--r-- | XMonad/Hooks/DynamicLog.hs | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/XMonad/Hooks/DynamicLog.hs b/XMonad/Hooks/DynamicLog.hs new file mode 100644 index 0000000..16f036a --- /dev/null +++ b/XMonad/Hooks/DynamicLog.hs @@ -0,0 +1,211 @@ +----------------------------------------------------------------------------- +-- | +-- Module : XMonad.Hooks.DynamicLog +-- Copyright : (c) Don Stewart <dons@cse.unsw.edu.au> +-- License : BSD3-style (see LICENSE) +-- +-- Maintainer : Don Stewart <dons@cse.unsw.edu.au> +-- Stability : unstable +-- Portability : unportable +-- +-- DynamicLog +-- +-- Log events in: +-- +-- > 1 2 [3] 4 8 +-- +-- format. Suitable to pipe into dzen. +-- +----------------------------------------------------------------------------- + +module XMonad.Hooks.DynamicLog ( + -- * Usage + -- $usage + dynamicLog, + dynamicLogDzen, + dynamicLogWithPP, + dynamicLogXinerama, + + pprWindowSet, + pprWindowSetXinerama, + + PP(..), defaultPP, dzenPP, sjanssenPP, + wrap, pad, shorten, + xmobarColor, dzenColor, dzenEscape + ) where + +-- +-- Useful imports +-- +import XMonad +import Control.Monad.Reader +import Data.Maybe ( isJust ) +import Data.List +import Data.Ord ( comparing ) +import qualified XMonad.StackSet as S +import Data.Monoid +import XMonad.Util.NamedWindows + +-- $usage +-- +-- To use, set: +-- +-- > import XMonad.Hooks.DynamicLog +-- > logHook = dynamicLog + +-- %import XMonad.Hooks.DynamicLog +-- %def -- comment out default logHook definition above if you uncomment any of these: +-- %def logHook = dynamicLog + + +-- | +-- An example log hook, print a status bar output to stdout, in the form: +-- +-- > 1 2 [3] 4 7 : full : title +-- +-- That is, the currently populated workspaces, the current +-- workspace layout, and the title of the focused window. +-- +dynamicLog :: X () +dynamicLog = dynamicLogWithPP defaultPP + +-- | +-- A log function that uses the 'PP' hooks to customize output. +dynamicLogWithPP :: PP -> X () +dynamicLogWithPP pp = do + spaces <- asks (workspaces . config) + -- layout description + ld <- withWindowSet $ return . description . S.layout . S.workspace . S.current + -- workspace list + ws <- withWindowSet $ return . pprWindowSet spaces pp + -- window title + wt <- withWindowSet $ maybe (return "") (fmap show . getName) . S.peek + + io . putStrLn . sepBy (ppSep pp) . ppOrder pp $ + [ ws + , ppLayout pp ld + , ppTitle pp wt + ] + +-- | An example log hook that emulates dwm's status bar, using colour codes printed to dzen +-- Requires dzen. Workspaces, xinerama, layouts and the window title are handled. +-- +dynamicLogDzen :: X () +dynamicLogDzen = dynamicLogWithPP dzenPP + + +pprWindowSet :: [String] -> PP -> WindowSet -> String +pprWindowSet spaces pp s = sepBy (ppWsSep pp) $ map fmt $ sortBy cmp + (map S.workspace (S.current s : S.visible s) ++ S.hidden s) + where f Nothing Nothing = EQ + f (Just _) Nothing = LT + f Nothing (Just _) = GT + f (Just x) (Just y) = compare x y + + wsIndex = flip elemIndex spaces . S.tag + + cmp a b = f (wsIndex a) (wsIndex b) `mappend` compare (S.tag a) (S.tag b) + + this = S.tag (S.workspace (S.current s)) + visibles = map (S.tag . S.workspace) (S.visible s) + + fmt w = printer pp (S.tag w) + where printer | S.tag w == this = ppCurrent + | S.tag w `elem` visibles = ppVisible + | isJust (S.stack w) = ppHidden + | otherwise = ppHiddenNoWindows + +-- | +-- Workspace logger with a format designed for Xinerama: +-- +-- > [1 9 3] 2 7 +-- +-- where 1, 9, and 3 are the workspaces on screens 1, 2 and 3, respectively, +-- and 2 and 7 are non-visible, non-empty workspaces +-- +dynamicLogXinerama :: X () +dynamicLogXinerama = withWindowSet $ io . putStrLn . pprWindowSetXinerama + +pprWindowSetXinerama :: WindowSet -> String +pprWindowSetXinerama ws = "[" ++ unwords onscreen ++ "] " ++ unwords offscreen + where onscreen = map (S.tag . S.workspace) + . sortBy (comparing S.screen) $ S.current ws : S.visible ws + offscreen = map S.tag . filter (isJust . S.stack) + . sortBy (comparing S.tag) $ S.hidden ws + +wrap :: String -> String -> String -> String +wrap _ _ "" = "" +wrap l r m = l ++ m ++ r + +pad :: String -> String +pad = wrap " " " " + +shorten :: Int -> String -> String +shorten n xs | length xs < n = xs + | otherwise = (take (n - length end) xs) ++ end + where + end = "..." + +sepBy :: String -> [String] -> String +sepBy sep = concat . intersperse sep . filter (not . null) + +dzenColor :: String -> String -> String -> String +dzenColor fg bg = wrap (fg1++bg1) (fg2++bg2) + where (fg1,fg2) | null fg = ("","") + | otherwise = ("^fg(" ++ fg ++ ")","^fg()") + (bg1,bg2) | null bg = ("","") + | otherwise = ("^bg(" ++ bg ++ ")","^bg()") + +-- | Escape any dzen metacharaters. +dzenEscape :: String -> String +dzenEscape = concatMap (\x -> if x == '^' then "^^" else [x]) + +xmobarColor :: String -> String -> String -> String +xmobarColor fg bg = wrap t "</fc>" + where t = concat ["<fc=", fg, if null bg then "" else "," ++ bg, ">"] + +-- | The 'PP' type allows the user to customize various behaviors of +-- dynamicLogPP +data PP = PP { ppCurrent, ppVisible + , ppHidden, ppHiddenNoWindows :: WorkspaceId -> String + , ppSep, ppWsSep :: String + , ppTitle :: String -> String + , ppLayout :: String -> String + , ppOrder :: [String] -> [String] } + +-- | The default pretty printing options, as seen in dynamicLog +defaultPP :: PP +defaultPP = PP { ppCurrent = wrap "[" "]" + , ppVisible = wrap "<" ">" + , ppHidden = id + , ppHiddenNoWindows = const "" + , ppSep = " : " + , ppWsSep = " " + , ppTitle = shorten 80 + , ppLayout = id + , ppOrder = id } + +-- | Settings to emulate dwm's statusbar, dzen only +dzenPP :: PP +dzenPP = defaultPP { ppCurrent = dzenColor "white" "#2b4f98" . pad + , ppVisible = dzenColor "black" "#999999" . pad + , ppHidden = dzenColor "black" "#cccccc" . pad + , ppHiddenNoWindows = const "" + , ppWsSep = "" + , ppSep = "" + , ppLayout = dzenColor "black" "#cccccc" . + (\ x -> case x of + "TilePrime Horizontal" -> " TTT " + "TilePrime Vertical" -> " []= " + "Hinted Full" -> " [ ] " + _ -> pad x + ) + , ppTitle = ("^bg(#324c80) " ++) . dzenEscape + } + +-- | The options that sjanssen likes to use, as an example. Note the use of +-- 'xmobarColor' and the record update on defaultPP +sjanssenPP :: PP +sjanssenPP = defaultPP { ppCurrent = xmobarColor "white" "#ff000000" + , ppTitle = xmobarColor "#00ee00" "" . shorten 80 + } |