{-# LANGUAGE ScopedTypeVariables, GeneralizedNewtypeDeriving, TypeSynonymInstances, FlexibleInstances, OverlappingInstances #-} ----------------------------------------------------------------------------- -- | -- Module : XMonad.Actions.GridSelect -- Copyright : Clemens Fruhwirth -- License : BSD-style (see LICENSE) -- -- Maintainer : Clemens Fruhwirth -- Stability : unstable -- Portability : unportable -- -- GridSelect displays items(e.g. the opened windows) in a 2D grid and lets -- the user select from it with the cursor/hjkl keys or the mouse. -- ----------------------------------------------------------------------------- module XMonad.Actions.GridSelect ( -- * Usage -- $usage -- ** Customizing -- *** Using a common GSConfig -- $commonGSConfig -- *** Custom keybindings -- $keybindings -- * Configuration GSConfig(..), def, defaultGSConfig, TwoDPosition, buildDefaultGSConfig, -- * Variations on 'gridselect' gridselect, gridselectWindow, withSelectedWindow, bringSelected, goToSelected, gridselectWorkspace, spawnSelected, runSelectedAction, -- * Colorizers HasColorizer(defaultColorizer), fromClassName, stringColorizer, colorRangeFromClassName, -- * Navigation Mode assembly TwoD, makeXEventhandler, shadowWithKeymap, -- * Built-in Navigation Mode defaultNavigation, substringSearch, navNSearch, -- * Navigation Components setPos, move, moveNext, movePrev, select, cancel, transformSearchString, -- * Screenshots -- $screenshots -- * Types TwoDState, ) where import Data.Maybe import Data.Bits import Data.Char import Data.Ord (comparing) import Control.Applicative import Control.Monad.State import Control.Arrow import Data.List as L import qualified Data.Map as M import XMonad hiding (liftX) import XMonad.Util.Font import XMonad.Prompt (mkUnmanagedWindow) import XMonad.StackSet as W import XMonad.Layout.Decoration import XMonad.Util.NamedWindows import XMonad.Actions.WindowBringer (bringWindow) import Text.Printf import System.Random (mkStdGen, genRange, next) import Data.Word (Word8) -- $usage -- -- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@: -- -- > import XMonad.Actions.GridSelect -- -- Then add a keybinding, e.g. -- -- > , ((modm, xK_g), goToSelected defaultGSConfig) -- -- This module also supports displaying arbitrary information in a grid and letting -- the user select from it. E.g. to spawn an application from a given list, you -- can use the following: -- -- > , ((modm, xK_s), spawnSelected defaultGSConfig ["xterm","gmplayer","gvim"]) -- $commonGSConfig -- -- It is possible to bind a @gsconfig@ at top-level in your configuration. Like so: -- -- > -- the top of your config -- > {-# LANGUAGE NoMonomorphismRestriction #-} -- > import XMonad -- > ... -- > gsconfig1 = defaultGSConfig { gs_cellheight = 30, gs_cellwidth = 100 } -- -- An example where 'buildDefaultGSConfig' is used instead of 'defaultGSConfig' -- in order to specify a custom colorizer is @gsconfig2@ (found in -- "XMonad.Actions.GridSelect#Colorizers"): -- -- > gsconfig2 colorizer = (buildDefaultGSConfig colorizer) { gs_cellheight = 30, gs_cellwidth = 100 } -- -- > -- | A green monochrome colorizer based on window class -- > greenColorizer = colorRangeFromClassName -- > black -- lowest inactive bg -- > (0x70,0xFF,0x70) -- highest inactive bg -- > black -- active bg -- > white -- inactive fg -- > white -- active fg -- > where black = minBound -- > white = maxBound -- -- Then you can bind to: -- -- > ,((modm, xK_g), goToSelected $ gsconfig2 myWinColorizer) -- > ,((modm, xK_p), spawnSelected $ spawnSelected defaultColorizer) -- $keybindings -- -- You can build you own navigation mode and submodes by combining the -- exported action ingredients and assembling them using 'makeXEventhandler' and 'shadowWithKeymap'. -- -- > myNavigation :: TwoD a (Maybe a) -- > myNavigation = makeXEventhandler $ shadowWithKeymap navKeyMap navDefaultHandler -- > where navKeyMap = M.fromList [ -- > ((0,xK_Escape), cancel) -- > ,((0,xK_Return), select) -- > ,((0,xK_slash) , substringSearch myNavigation) -- > ,((0,xK_Left) , move (-1,0) >> myNavigation) -- > ,((0,xK_h) , move (-1,0) >> myNavigation) -- > ,((0,xK_Right) , move (1,0) >> myNavigation) -- > ,((0,xK_l) , move (1,0) >> myNavigation) -- > ,((0,xK_Down) , move (0,1) >> myNavigation) -- > ,((0,xK_j) , move (0,1) >> myNavigation) -- > ,((0,xK_Up) , move (0,-1) >> myNavigation) -- > ,((0,xK_y) , move (-1,-1) >> myNavigation) -- > ,((0,xK_i) , move (1,-1) >> myNavigation) -- > ,((0,xK_n) , move (-1,1) >> myNavigation) -- > ,((0,xK_m) , move (1,-1) >> myNavigation) -- > ,((0,xK_space) , setPos (0,0) >> myNavigation) -- > ] -- > -- The navigation handler ignores unknown key symbols -- > navDefaultHandler = const myNavigation -- -- You can then define @gsconfig3@ which may be used in exactly the same manner as @gsconfig1@: -- -- > gsconfig3 = def -- > { gs_cellheight = 30 -- > , gs_cellwidth = 100 -- > , gs_navigate = myNavigation -- > } -- $screenshots -- -- Selecting a workspace: -- -- <> -- -- Selecting a window by title: -- -- <> -- | The 'Default' instance gives a basic configuration for 'gridselect', with -- the colorizer chosen based on the type. -- -- If you want to replace the 'gs_colorizer' field, use 'buildDefaultGSConfig' -- instead of 'def' to avoid ambiguous type variables. data GSConfig a = GSConfig { gs_cellheight :: Integer, gs_cellwidth :: Integer, gs_cellpadding :: Integer, gs_colorizer :: a -> Bool -> X (String, String), gs_font :: String, gs_navigate :: TwoD a (Maybe a), gs_originFractX :: Double, gs_originFractY :: Double } -- | That is 'fromClassName' if you are selecting a 'Window', or -- 'defaultColorizer' if you are selecting a 'String'. The catch-all instance -- @HasColorizer a@ uses the 'focusedBorderColor' and 'normalBorderColor' -- colors. class HasColorizer a where defaultColorizer :: a -> Bool -> X (String, String) instance HasColorizer Window where defaultColorizer = fromClassName instance HasColorizer String where defaultColorizer = stringColorizer instance HasColorizer a where defaultColorizer _ isFg = let getColor = if isFg then focusedBorderColor else normalBorderColor in asks $ flip (,) "black" . getColor . config instance HasColorizer a => Default (GSConfig a) where def = buildDefaultGSConfig defaultColorizer {-# DEPRECATED defaultGSConfig "Use def (from Data.Default, and re-exported from XMonad.Actions.GridSelect) instead." #-} defaultGSConfig :: HasColorizer a => GSConfig a defaultGSConfig = def type TwoDPosition = (Integer, Integer) type TwoDElementMap a = [(TwoDPosition,(String,a))] data TwoDState a = TwoDState { td_curpos :: TwoDPosition , td_availSlots :: [TwoDPosition] , td_elements :: [(String,a)] , td_gsconfig :: GSConfig a , td_font :: XMonadFont , td_paneX :: Integer , td_paneY :: Integer , td_drawingWin :: Window , td_searchString :: String , td_elementmap :: TwoDElementMap a } generateElementmap :: TwoDState a -> TwoDElementMap a generateElementmap s = zip positions sortedElements where TwoDState {td_availSlots = positions, td_searchString = searchString} = s -- Filter out any elements that don't contain the searchString (case insensitive) filteredElements = L.filter ((searchString `isInfixOfI`) . fst) (td_elements s) -- Sorts the elementmap sortedElements = orderElementmap searchString filteredElements -- Case Insensitive version of isInfixOf needle `isInfixOfI` haystack = (upper needle) `isInfixOf` (upper haystack) upper = map toUpper -- | We enforce an ordering such that we will always get the same result. If the -- elements position changes from call to call of gridselect, then the shown -- positions will also change when you search for the same string. This is -- especially the case when using gridselect for showing and switching between -- workspaces, as workspaces are usually shown in order of last visited. The -- chosen ordering is "how deep in the haystack the needle is" (number of -- characters from the beginning of the string and the needle). orderElementmap :: String -> [(String,a)] -> [(String,a)] orderElementmap searchString elements = if not $ null searchString then sortedElements else elements where upper = map toUpper -- Calculates a (score, element) tuple where the score is the depth of the (case insensitive) needle. calcScore element = ( length $ takeWhile (not . isPrefixOf (upper searchString)) (tails . upper . fst $ element) , element) -- Use the score and then the string as the parameters for comparing, making -- it consistent even when two strings that score the same, as it will then be -- sorted by the strings, making it consistent. compareScore = comparing (\(score, (str,_)) -> (score, str)) sortedElements = map snd . sortBy compareScore $ map calcScore elements newtype TwoD a b = TwoD { unTwoD :: StateT (TwoDState a) X b } deriving (Monad,Functor,MonadState (TwoDState a)) instance Applicative (TwoD a) where (<*>) = ap pure = return liftX :: X a1 -> TwoD a a1 liftX = TwoD . lift evalTwoD :: TwoD a1 a -> TwoDState a1 -> X a evalTwoD m s = flip evalStateT s $ unTwoD m diamondLayer :: (Enum a, Num a, Eq a) => a -> [(a, a)] diamondLayer 0 = [(0,0)] diamondLayer n = -- tr = top right -- r = ur ++ 90 degree clock-wise rotation of ur let tr = [ (x,n-x) | x <- [0..n-1] ] r = tr ++ (map (\(x,y) -> (y,-x)) tr) in r ++ (map (negate *** negate) r) diamond :: (Enum a, Num a, Eq a) => [(a, a)] diamond = concatMap diamondLayer [0..] diamondRestrict :: Integer -> Integer -> Integer -> Integer -> [(Integer, Integer)] diamondRestrict x y originX originY = L.filter (\(x',y') -> abs x' <= x && abs y' <= y) . map (\(x', y') -> (x' + fromInteger originX, y' + fromInteger originY)) . take 1000 $ diamond findInElementMap :: (Eq a) => a -> [(a, b)] -> Maybe (a, b) findInElementMap pos = find ((== pos) . fst) drawWinBox :: Window -> XMonadFont -> (String, String) -> Integer -> Integer -> String -> Integer -> Integer -> Integer -> X () drawWinBox win font (fg,bg) ch cw text x y cp = withDisplay $ \dpy -> do gc <- liftIO $ createGC dpy win bordergc <- liftIO $ createGC dpy win liftIO $ do Just fgcolor <- initColor dpy fg Just bgcolor <- initColor dpy bg Just bordercolor <- initColor dpy borderColor setForeground dpy gc fgcolor setBackground dpy gc bgcolor setForeground dpy bordergc bordercolor fillRectangle dpy win gc (fromInteger x) (fromInteger y) (fromInteger cw) (fromInteger ch) drawRectangle dpy win bordergc (fromInteger x) (fromInteger y) (fromInteger cw) (fromInteger ch) stext <- shrinkWhile (shrinkIt shrinkText) (\n -> do size <- liftIO $ textWidthXMF dpy font n return $ size > (fromInteger (cw-(2*cp)))) text printStringXMF dpy win font gc bg fg (fromInteger (x+cp)) (fromInteger (y+(div ch 2))) stext liftIO $ freeGC dpy gc liftIO $ freeGC dpy bordergc updateAllElements :: TwoD a () updateAllElements = do s <- get updateElements (td_elementmap s) grayoutElements :: Int -> TwoD a () grayoutElements skip = do s <- get updateElementsWithColorizer grayOnly $ drop skip (td_elementmap s) where grayOnly _ _ = return ("#808080", "#808080") updateElements :: TwoDElementMap a -> TwoD a () updateElements elementmap = do s <- get updateElementsWithColorizer (gs_colorizer (td_gsconfig s)) elementmap updateElementsWithColorizer :: (a -> Bool -> X (String, String)) -> TwoDElementMap a -> TwoD a () updateElementsWithColorizer colorizer elementmap = do TwoDState { td_curpos = curpos, td_drawingWin = win, td_gsconfig = gsconfig, td_font = font, td_paneX = paneX, td_paneY = paneY} <- get let cellwidth = gs_cellwidth gsconfig cellheight = gs_cellheight gsconfig paneX' = div (paneX-cellwidth) 2 paneY' = div (paneY-cellheight) 2 updateElement (pos@(x,y),(text, element)) = liftX $ do colors <- colorizer element (pos == curpos) drawWinBox win font colors cellheight cellwidth text (paneX'+x*cellwidth) (paneY'+y*cellheight) (gs_cellpadding gsconfig) mapM_ updateElement elementmap stdHandle :: Event -> TwoD a (Maybe a) -> TwoD a (Maybe a) stdHandle (ButtonEvent { ev_event_type = t, ev_x = x, ev_y = y }) contEventloop | t == buttonRelease = do s @ TwoDState { td_paneX = px, td_paneY = py, td_gsconfig = (GSConfig ch cw _ _ _ _ _ _) } <- get let gridX = (fi x - (px - cw) `div` 2) `div` cw gridY = (fi y - (py - ch) `div` 2) `div` ch case lookup (gridX,gridY) (td_elementmap s) of Just (_,el) -> return (Just el) Nothing -> contEventloop | otherwise = contEventloop stdHandle (ExposeEvent { }) contEventloop = updateAllElements >> contEventloop stdHandle _ contEventloop = contEventloop -- | Embeds a key handler into the X event handler that dispatches key -- events to the key handler, while non-key event go to the standard -- handler. makeXEventhandler :: ((KeySym, String, KeyMask) -> TwoD a (Maybe a)) -> TwoD a (Maybe a) makeXEventhandler keyhandler = fix $ \me -> join $ liftX $ withDisplay $ \d -> liftIO $ allocaXEvent $ \e -> do maskEvent d (exposureMask .|. keyPressMask .|. buttonReleaseMask) e ev <- getEvent e if ev_event_type ev == keyPress then do (ks,s) <- lookupString $ asKeyEvent e return $ do mask <- liftX $ cleanMask (ev_state ev) keyhandler (fromMaybe xK_VoidSymbol ks, s, mask) else return $ stdHandle ev me -- | When the map contains (KeySym,KeyMask) tuple for the given event, -- the associated action in the map associated shadows the default key -- handler shadowWithKeymap :: M.Map (KeyMask, KeySym) a -> ((KeySym, String, KeyMask) -> a) -> (KeySym, String, KeyMask) -> a shadowWithKeymap keymap dflt keyEvent@(ks,_,m') = fromMaybe (dflt keyEvent) (M.lookup (m',ks) keymap) -- Helper functions to use for key handler functions -- | Closes gridselect returning the element under the cursor select :: TwoD a (Maybe a) select = do s <- get return $ fmap (snd . snd) $ findInElementMap (td_curpos s) (td_elementmap s) -- | Closes gridselect returning no element. cancel :: TwoD a (Maybe a) cancel = return Nothing -- | Sets the absolute position of the cursor. setPos :: (Integer, Integer) -> TwoD a () setPos newPos = do s <- get let elmap = td_elementmap s newSelectedEl = findInElementMap newPos (td_elementmap s) oldPos = td_curpos s when (isJust newSelectedEl && newPos /= oldPos) $ do put s { td_curpos = newPos } updateElements (catMaybes [(findInElementMap oldPos elmap), newSelectedEl]) -- | Moves the cursor by the offsets specified move :: (Integer, Integer) -> TwoD a () move (dx,dy) = do s <- get let (x,y) = td_curpos s newPos = (x+dx,y+dy) setPos newPos moveNext :: TwoD a () moveNext = do position <- gets td_curpos elems <- gets td_elementmap let n = length elems m = case findIndex (\p -> fst p == position) elems of Nothing -> Nothing Just k | k == n-1 -> Just 0 | otherwise -> Just (k+1) whenJust m $ \i -> setPos (fst $ elems !! i) movePrev :: TwoD a () movePrev = do position <- gets td_curpos elems <- gets td_elementmap let n = length elems m = case findIndex (\p -> fst p == position) elems of Nothing -> Nothing Just 0 -> Just (n-1) Just k -> Just (k-1) whenJust m $ \i -> setPos (fst $ elems !! i) -- | Apply a transformation function the current search string transformSearchString :: (String -> String) -> TwoD a () transformSearchString f = do s <- get let oldSearchString = td_searchString s newSearchString = f oldSearchString when (newSearchString /= oldSearchString) $ do -- FIXME curpos might end up outside new bounds let s' = s { td_searchString = newSearchString } m = generateElementmap s' s'' = s' { td_elementmap = m } oldLen = length $ td_elementmap s newLen = length $ td_elementmap s'' -- All the elements in the previous element map should be -- grayed out, except for those which will be covered by -- elements in the new element map. when (newLen < oldLen) $ grayoutElements newLen put s'' updateAllElements -- | By default gridselect used the defaultNavigation action, which -- binds left,right,up,down and vi-style h,l,j,k navigation. Return -- quits gridselect, returning the selected element, while Escape -- cancels the selection. Slash enters the substring search mode. In -- substring search mode, every string-associated keystroke is -- added to a search string, which narrows down the object -- selection. Substring search mode comes back to regular navigation -- via Return, while Escape cancels the search. If you want that -- navigation style, add 'defaultNavigation' as 'gs_navigate' to your -- 'GSConfig' object. This is done by 'buildDefaultGSConfig' automatically. defaultNavigation :: TwoD a (Maybe a) defaultNavigation = makeXEventhandler $ shadowWithKeymap navKeyMap navDefaultHandler where navKeyMap = M.fromList [ ((0,xK_Escape) , cancel) ,((0,xK_Return) , select) ,((0,xK_slash) , substringSearch defaultNavigation) ,((0,xK_Left) , move (-1,0) >> defaultNavigation) ,((0,xK_h) , move (-1,0) >> defaultNavigation) ,((0,xK_Right) , move (1,0) >> defaultNavigation) ,((0,xK_l) , move (1,0) >> defaultNavigation) ,((0,xK_Down) , move (0,1) >> defaultNavigation) ,((0,xK_j) , move (0,1) >> defaultNavigation) ,((0,xK_Up) , move (0,-1) >> defaultNavigation) ,((0,xK_k) , move (0,-1) >> defaultNavigation) ,((0,xK_Tab) , moveNext >> defaultNavigation) ,((0,xK_n) , moveNext >> defaultNavigation) ,((shiftMask,xK_Tab), movePrev >> defaultNavigation) ,((0,xK_p) , movePrev >> defaultNavigation) ] -- The navigation handler ignores unknown key symbols, therefore we const navDefaultHandler = const defaultNavigation -- | This navigation style combines navigation and search into one mode at the cost of losing vi style -- navigation. With this style, there is no substring search submode, -- but every typed character is added to the substring search. navNSearch :: TwoD a (Maybe a) navNSearch = makeXEventhandler $ shadowWithKeymap navNSearchKeyMap navNSearchDefaultHandler where navNSearchKeyMap = M.fromList [ ((0,xK_Escape) , cancel) ,((0,xK_Return) , select) ,((0,xK_Left) , move (-1,0) >> navNSearch) ,((0,xK_Right) , move (1,0) >> navNSearch) ,((0,xK_Down) , move (0,1) >> navNSearch) ,((0,xK_Up) , move (0,-1) >> navNSearch) ,((0,xK_Tab) , moveNext >> navNSearch) ,((shiftMask,xK_Tab), movePrev >> navNSearch) ,((0,xK_BackSpace), transformSearchString (\s -> if (s == "") then "" else init s) >> navNSearch) ] -- The navigation handler ignores unknown key symbols, therefore we const navNSearchDefaultHandler (_,s,_) = do transformSearchString (++ s) navNSearch -- | Navigation submode used for substring search. It returns to the -- first argument navigation style when the user hits Return. substringSearch :: TwoD a (Maybe a) -> TwoD a (Maybe a) substringSearch returnNavigation = fix $ \me -> let searchKeyMap = M.fromList [ ((0,xK_Escape) , transformSearchString (const "") >> returnNavigation) ,((0,xK_Return) , returnNavigation) ,((0,xK_BackSpace), transformSearchString (\s -> if (s == "") then "" else init s) >> me) ] searchDefaultHandler (_,s,_) = do transformSearchString (++ s) me in makeXEventhandler $ shadowWithKeymap searchKeyMap searchDefaultHandler -- FIXME probably move that into Utils? -- Conversion scheme as in http://en.wikipedia.org/wiki/HSV_color_space hsv2rgb :: Fractional a => (Integer,a,a) -> (a,a,a) hsv2rgb (h,s,v) = let hi = (div h 60) `mod` 6 :: Integer f = (((fromInteger h)/60) - (fromInteger hi)) :: Fractional a => a q = v * (1-f) p = v * (1-s) t = v * (1-(1-f)*s) in case hi of 0 -> (v,t,p) 1 -> (q,v,p) 2 -> (p,v,t) 3 -> (p,q,v) 4 -> (t,p,v) 5 -> (v,p,q) _ -> error "The world is ending. x mod a >= a." -- | Default colorizer for Strings stringColorizer :: String -> Bool -> X (String, String) stringColorizer s active = let seed x = toInteger (sum $ map ((*x).fromEnum) s) :: Integer (r,g,b) = hsv2rgb ((seed 83) `mod` 360, (fromInteger ((seed 191) `mod` 1000))/2500+0.4, (fromInteger ((seed 121) `mod` 1000))/2500+0.4) in if active then return ("#faff69", "black") else return ("#" ++ concat (map (twodigitHex.(round :: Double -> Word8).(*256)) [r, g, b] ), "white") -- | Colorize a window depending on it's className. fromClassName :: Window -> Bool -> X (String, String) fromClassName w active = runQuery className w >>= flip defaultColorizer active twodigitHex :: Word8 -> String twodigitHex a = printf "%02x" a -- | A colorizer that picks a color inside a range, -- and depending on the window's class. colorRangeFromClassName :: (Word8, Word8, Word8) -- ^ Beginning of the color range -> (Word8, Word8, Word8) -- ^ End of the color range -> (Word8, Word8, Word8) -- ^ Background of the active window -> (Word8, Word8, Word8) -- ^ Inactive text color -> (Word8, Word8, Word8) -- ^ Active text color -> Window -> Bool -> X (String, String) colorRangeFromClassName startC endC activeC inactiveT activeT w active = do classname <- runQuery className w if active then return (rgbToHex activeC, rgbToHex activeT) else return (rgbToHex $ mix startC endC $ stringToRatio classname, rgbToHex inactiveT) where rgbToHex :: (Word8, Word8, Word8) -> String rgbToHex (r, g, b) = '#':twodigitHex r ++twodigitHex g++twodigitHex b -- | Creates a mix of two colors according to a ratio -- (1 -> first color, 0 -> second color). mix :: (Word8, Word8, Word8) -> (Word8, Word8, Word8) -> Double -> (Word8, Word8, Word8) mix (r1, g1, b1) (r2, g2, b2) r = (mix' r1 r2, mix' g1 g2, mix' b1 b2) where mix' a b = truncate $ (fi a * r) + (fi b * (1 - r)) -- | Generates a Double from a string, trying to -- achieve a random distribution. -- We create a random seed from the sum of all characters -- in the string, and use it to generate a ratio between 0 and 1 stringToRatio :: String -> Double stringToRatio "" = 0 stringToRatio s = let gen = mkStdGen $ sum $ map fromEnum s range = (\(a, b) -> b - a) $ genRange gen randomInt = foldr1 combine $ replicate 20 next combine f1 f2 g = let (_, g') = f1 g in f2 g' in fi (fst $ randomInt gen) / fi range -- | Brings up a 2D grid of elements in the center of the screen, and one can -- select an element with cursors keys. The selected element is returned. gridselect :: GSConfig a -> [(String,a)] -> X (Maybe a) gridselect _ [] = return Nothing gridselect gsconfig elements = withDisplay $ \dpy -> do rootw <- asks theRoot scr <- gets $ screenRect . W.screenDetail . W.current . windowset win <- liftIO $ mkUnmanagedWindow dpy (defaultScreenOfDisplay dpy) rootw (rect_x scr) (rect_y scr) (rect_width scr) (rect_height scr) liftIO $ mapWindow dpy win liftIO $ selectInput dpy win (exposureMask .|. keyPressMask .|. buttonReleaseMask) status <- io $ grabKeyboard dpy win True grabModeAsync grabModeAsync currentTime io $ grabButton dpy button1 anyModifier win True buttonReleaseMask grabModeAsync grabModeAsync none none font <- initXMF (gs_font gsconfig) let screenWidth = toInteger $ rect_width scr screenHeight = toInteger $ rect_height scr selectedElement <- if (status == grabSuccess) then do let restriction ss cs = (fromInteger ss/fromInteger (cs gsconfig)-1)/2 :: Double restrictX = floor $ restriction screenWidth gs_cellwidth restrictY = floor $ restriction screenHeight gs_cellheight originPosX = floor $ ((gs_originFractX gsconfig) - (1/2)) * 2 * fromIntegral restrictX originPosY = floor $ ((gs_originFractY gsconfig) - (1/2)) * 2 * fromIntegral restrictY coords = diamondRestrict restrictX restrictY originPosX originPosY s = TwoDState { td_curpos = (head coords), td_availSlots = coords, td_elements = elements, td_gsconfig = gsconfig, td_font = font, td_paneX = screenWidth, td_paneY = screenHeight, td_drawingWin = win, td_searchString = "", td_elementmap = [] } m = generateElementmap s evalTwoD (updateAllElements >> (gs_navigate gsconfig)) (s { td_elementmap = m }) else return Nothing liftIO $ do unmapWindow dpy win destroyWindow dpy win sync dpy False releaseXMF font return selectedElement -- | Like `gridSelect' but with the current windows and their titles as elements gridselectWindow :: GSConfig Window -> X (Maybe Window) gridselectWindow gsconf = windowMap >>= gridselect gsconf -- | Brings up a 2D grid of windows in the center of the screen, and one can -- select a window with cursors keys. The selected window is then passed to -- a callback function. withSelectedWindow :: (Window -> X ()) -> GSConfig Window -> X () withSelectedWindow callback conf = do mbWindow <- gridselectWindow conf case mbWindow of Just w -> callback w Nothing -> return () windowMap :: X [(String,Window)] windowMap = do ws <- gets windowset wins <- mapM keyValuePair (W.allWindows ws) return wins where keyValuePair w = flip (,) w `fmap` decorateName' w decorateName' :: Window -> X String decorateName' w = do fmap show $ getName w -- | Builds a default gs config from a colorizer function. buildDefaultGSConfig :: (a -> Bool -> X (String,String)) -> GSConfig a buildDefaultGSConfig col = GSConfig 50 130 10 col "xft:Sans-8" defaultNavigation (1/2) (1/2) borderColor :: String borderColor = "white" -- | Brings selected window to the current workspace. bringSelected :: GSConfig Window -> X () bringSelected = withSelectedWindow $ \w -> do windows (bringWindow w) XMonad.focus w windows W.shiftMaster -- | Switches to selected window's workspace and focuses that window. goToSelected :: GSConfig Window -> X () goToSelected = withSelectedWindow $ windows . W.focusWindow -- | Select an application to spawn from a given list spawnSelected :: GSConfig String -> [String] -> X () spawnSelected conf lst = gridselect conf (zip lst lst) >>= flip whenJust spawn -- | Select an action and run it in the X monad runSelectedAction :: GSConfig (X ()) -> [(String, X ())] -> X () runSelectedAction conf actions = do selectedActionM <- gridselect conf actions case selectedActionM of Just selectedAction -> selectedAction Nothing -> return () -- | Select a workspace and view it using the given function -- (normally 'W.view' or 'W.greedyView') -- -- Another option is to shift the current window to the selected workspace: -- -- > gridselectWorkspace (\ws -> W.greedyView ws . W.shift ws) gridselectWorkspace :: GSConfig WorkspaceId -> (WorkspaceId -> WindowSet -> WindowSet) -> X () gridselectWorkspace conf viewFunc = withWindowSet $ \ws -> do let wss = map W.tag $ W.hidden ws ++ map W.workspace (W.current ws : W.visible ws) gridselect conf (zip wss wss) >>= flip whenJust (windows . viewFunc)