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{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses, PatternGuards, TypeSynonymInstances #-}
-----------------------------------------------------------------------------
-- |
-- Module : XMonad.Layout.Tabbed
-- Copyright : (c) 2007 David Roundy, Andrea Rossato
-- License : BSD-style (see xmonad/LICENSE)
--
-- Maintainer : droundy@darcs.net, andrea.rossato@unibz.it
-- Stability : unstable
-- Portability : unportable
--
-- A tabbed layout for the Xmonad Window Manager
--
-----------------------------------------------------------------------------
module XMonad.Layout.Tabbed (
-- * Usage:
-- $usage
tabbed
, shrinkText, CustomShrink(CustomShrink)
, TConf (..), defaultTConf
, Shrinker(..)
) where
import Control.Monad.State ( gets )
import Control.Monad.Reader
import Data.Maybe
import Data.List
import Graphics.X11.Xlib
import Graphics.X11.Xlib.Extras
import XMonad
import XMonad.Operations
import qualified XMonad.StackSet as W
import XMonad.Util.NamedWindows
import XMonad.Util.Invisible
import XMonad.Util.XUtils
import XMonad.Util.Font
-- $usage
-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:
--
-- > import XMonad.Layout.Tabbed
--
-- Then edit your @layoutHook@ by adding the Tabbed layout:
--
-- > myLayouts = tabbed shrinkText defaultTConf ||| Full ||| etc..
-- > main = xmonad defaultConfig { layoutHook = myLayouts }
--
-- For more detailed instructions on editing the layoutHook see:
--
-- "XMonad.Doc.Extending#Editing_the_layout_hook"
--
-- You can also edit the default configuration options.
--
-- > myTabConfig = defaultTConf { inactiveBorderColor = "#FF0000"
-- > , activeTextColor = "#00FF00"}
--
-- and
--
-- > mylayout = tabbed shrinkText myTabConfig ||| Full ||| etc..
tabbed :: Shrinker s => s -> TConf -> Tabbed s a
tabbed s t = Tabbed (I Nothing) s t
data TConf =
TConf { activeColor :: String
, inactiveColor :: String
, activeBorderColor :: String
, inactiveTextColor :: String
, inactiveBorderColor :: String
, activeTextColor :: String
, fontName :: String
, tabSize :: Int
} deriving (Show, Read)
defaultTConf :: TConf
defaultTConf =
TConf { activeColor = "#999999"
, inactiveColor = "#666666"
, activeBorderColor = "#FFFFFF"
, inactiveBorderColor = "#BBBBBB"
, activeTextColor = "#FFFFFF"
, inactiveTextColor = "#BFBFBF"
, fontName = "-misc-fixed-*-*-*-*-10-*-*-*-*-*-*-*"
, tabSize = 20
}
data TabState =
TabState { tabsWindows :: [(Window,Window)]
, scr :: Rectangle
, font :: XMonadFont
}
data Tabbed s a =
Tabbed (Invisible Maybe TabState) s TConf
deriving (Show, Read)
instance Shrinker s => LayoutClass (Tabbed s) Window where
doLayout (Tabbed ist ishr conf) = doLay ist ishr conf
handleMessage = handleMess
description _ = "Tabbed"
doLay :: Shrinker s => Invisible Maybe TabState -> s -> TConf
-> Rectangle -> W.Stack Window -> X ([(Window, Rectangle)], Maybe (Tabbed s Window))
doLay ist ishr c sc (W.Stack w [] []) = do
whenIJust ist $ \st -> mapM_ deleteWindow (map fst $ tabsWindows st)
return ([(w,sc)], Just $ Tabbed (I Nothing) ishr c)
doLay ist ishr c sc@(Rectangle _ _ wid _) s@(W.Stack w _ _) = do
let ws = W.integrate s
width = wid `div` fromIntegral (length ws)
-- initialize state
st <- case ist of
(I Nothing ) -> initState c sc ws
(I (Just ts)) -> if map snd (tabsWindows ts) == ws && scr ts == sc
then return ts
else do mapM_ deleteWindow (map fst $ tabsWindows ts)
tws <- createTabs c sc ws
return (ts {scr = sc, tabsWindows = zip tws ws})
mapM_ showWindow $ map fst $ tabsWindows st
mapM_ (updateTab ishr c (font st) width) $ tabsWindows st
return ([(w,shrink c sc)], Just (Tabbed (I (Just st)) ishr c))
handleMess :: Shrinker s => Tabbed s Window -> SomeMessage -> X (Maybe (Tabbed s Window))
handleMess (Tabbed (I (Just st@(TabState {tabsWindows = tws}))) ishr conf) m
| Just e <- fromMessage m :: Maybe Event = handleEvent ishr conf st e >> return Nothing
| Just Hide == fromMessage m = mapM_ hideWindow (map fst tws) >> return Nothing
| Just ReleaseResources == fromMessage m = do mapM_ deleteWindow $ map fst tws
releaseXMF (font st)
return $ Just $ Tabbed (I Nothing) ishr conf
handleMess _ _ = return Nothing
handleEvent :: Shrinker s => s -> TConf -> TabState -> Event -> X ()
-- button press
handleEvent ishr conf (TabState {tabsWindows = tws, scr = screen, font = fs})
(ButtonEvent {ev_window = thisw, ev_subwindow = thisbw, ev_event_type = t})
| t == buttonPress, tl <- map fst tws, thisw `elem` tl || thisbw `elem` tl = do
case lookup thisw tws of
Just x -> do focus x
updateTab ishr conf fs width (thisw, x)
Nothing -> return ()
where
width = rect_width screen`div` fromIntegral (length tws)
handleEvent ishr conf (TabState {tabsWindows = tws, scr = screen, font = fs})
(AnyEvent {ev_window = thisw, ev_event_type = t })
-- expose
| thisw `elem` (map fst tws) && t == expose = do
updateTab ishr conf fs width (thisw, fromJust $ lookup thisw tws)
where
width = rect_width screen`div` fromIntegral (length tws)
-- propertyNotify
handleEvent ishr conf (TabState {tabsWindows = tws, scr = screen, font = fs})
(PropertyEvent {ev_window = thisw})
| thisw `elem` (map snd tws) = do
let tabwin = (fst $ fromJust $ find ((== thisw) . snd) tws, thisw)
updateTab ishr conf fs width tabwin
where width = rect_width screen `div` fromIntegral (length tws)
-- expose
handleEvent ishr conf (TabState {tabsWindows = tws, scr = screen, font = fs})
(ExposeEvent {ev_window = thisw})
| thisw `elem` (map fst tws) = do
updateTab ishr conf fs width (thisw, fromJust $ lookup thisw tws)
where width = rect_width screen `div` fromIntegral (length tws)
handleEvent _ _ _ _ = return ()
initState :: TConf -> Rectangle -> [Window] -> X TabState
initState conf sc ws = do
fs <- initXMF (fontName conf)
tws <- createTabs conf sc ws
return $ TabState (zip tws ws) sc fs
createTabs :: TConf -> Rectangle -> [Window] -> X [Window]
createTabs _ _ [] = return []
createTabs c (Rectangle x y wh ht) owl@(ow:ows) = do
let wid = wh `div` (fromIntegral $ length owl)
height = fromIntegral $ tabSize c
mask = Just (exposureMask .|. buttonPressMask)
d <- asks display
w <- createNewWindow (Rectangle x y wid height) mask (inactiveColor c)
io $ restackWindows d $ w : [ow]
ws <- createTabs c (Rectangle (x + fromIntegral wid) y (wh - wid) ht) ows
return (w:ws)
updateTab :: Shrinker s => s -> TConf -> XMonadFont -> Dimension -> (Window,Window) -> X ()
updateTab ishr c fs wh (tabw,ow) = do
nw <- getName ow
let ht = fromIntegral $ tabSize c :: Dimension
focusColor win ic ac = (maybe ic (\focusw -> if focusw == win
then ac else ic) . W.peek)
`fmap` gets windowset
(bc',borderc',tc') <- focusColor ow
(inactiveColor c, inactiveBorderColor c, inactiveTextColor c)
(activeColor c, activeBorderColor c, activeTextColor c)
dpy <- asks display
let s = shrinkIt ishr
name <- shrinkWhile s (\n -> do
size <- io $ textWidthXMF dpy fs n
return $ size > fromIntegral wh - fromIntegral (ht `div` 2)) (show nw)
paintAndWrite tabw fs wh ht 1 bc' borderc' tc' bc' AlignCenter name
shrink :: TConf -> Rectangle -> Rectangle
shrink c (Rectangle x y w h) =
Rectangle x (y + fromIntegral (tabSize c)) w (h - fromIntegral (tabSize c))
shrinkWhile :: (String -> [String]) -> (String -> X Bool) -> String -> X String
shrinkWhile sh p x = sw $ sh x
where sw [n] = return n
sw [] = return ""
sw (n:ns) = do
cond <- p n
if cond
then sw ns
else return n
data CustomShrink = CustomShrink
instance Show CustomShrink where show _ = ""
instance Read CustomShrink where readsPrec _ s = [(CustomShrink,s)]
class (Read s, Show s) => Shrinker s where
shrinkIt :: s -> String -> [String]
data DefaultShrinker = DefaultShrinker
instance Show DefaultShrinker where show _ = ""
instance Read DefaultShrinker where readsPrec _ s = [(DefaultShrinker,s)]
instance Shrinker DefaultShrinker where
shrinkIt _ "" = [""]
shrinkIt s cs = cs : shrinkIt s (init cs)
shrinkText :: DefaultShrinker
shrinkText = DefaultShrinker
|
