module XMonad.Actions.GridSelect (
GSConfig(..),
defaultGSConfig,
NavigateMap,
TwoDPosition,
buildDefaultGSConfig,
gridselect,
gridselectWindow,
withSelectedWindow,
bringSelected,
goToSelected,
spawnSelected,
runSelectedAction,
HasColorizer(defaultColorizer),
fromClassName,
stringColorizer,
colorRangeFromClassName
) where
import Data.Maybe
import Data.Bits
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)
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 :: NavigateMap,
gs_originFractX :: Double,
gs_originFractY :: Double
}
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
defaultGSConfig :: HasColorizer a => GSConfig a
defaultGSConfig = buildDefaultGSConfig defaultColorizer
type NavigateMap = M.Map (KeyMask,KeySym) (TwoDPosition -> TwoDPosition)
type TwoDPosition = (Integer, Integer)
type TwoDElementMap a = [(TwoDPosition,(String,a))]
data TwoDState a = TwoDState { td_curpos :: TwoDPosition
, td_elementmap :: TwoDElementMap a
, td_gsconfig :: GSConfig a
, td_font :: XMonadFont
, td_paneX :: Integer
, td_paneY :: Integer
, td_drawingWin :: Window
}
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 b', Num b') => b' -> [(b', b')]
diamondLayer n = let ul = [ (x,nx) | x <- [0..n] ]
in nub $ ul ++ (map (negate *** id) ul) ++
(map (negate *** negate) ul) ++
(map (id *** negate) ul)
diamond :: (Enum a, Num 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
tupadd :: (Num t1, Num t) => (t, t1) -> (t, t1) -> (t, t1)
tupadd (a,b) (c,d) = (a+c,b+d)
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
TwoDState { td_elementmap = els } <- get
updateElements els
updateElements :: TwoDElementMap a -> TwoD a ()
updateElements 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 (paneXcellwidth) 2
paneY' = div (paneYcellheight) 2
updateElement (pos@(x,y),(text, element)) = liftX $ do
colors <- gs_colorizer gsconfig element (pos == curpos)
drawWinBox win font
colors
cellheight
cellwidth
text
(paneX'+x*cellwidth)
(paneY'+y*cellheight)
(gs_cellpadding gsconfig)
mapM_ updateElement elementmap
eventLoop :: TwoD a (Maybe a)
eventLoop = do
(keysym,string,event) <- liftX $ withDisplay $ \d -> liftIO $ allocaXEvent $ \e -> do
maskEvent d (exposureMask .|. keyPressMask .|. buttonReleaseMask) e
ev <- getEvent e
(ks,s) <- if ev_event_type ev == keyPress
then lookupString $ asKeyEvent e
else return (Nothing, "")
return (ks,s,ev)
handle (fromMaybe xK_VoidSymbol keysym,string) event
handle :: (KeySym, t) -> Event -> TwoD a (Maybe a)
handle (ks,_) (KeyEvent {ev_event_type = t, ev_state = m })
| t == keyPress && ks == xK_Escape = return Nothing
| t == keyPress && ks == xK_Return = do
(TwoDState { td_curpos = pos, td_elementmap = elmap }) <- get
return $ fmap (snd . snd) $ findInElementMap pos elmap
| t == keyPress = do
m' <- liftX (cleanMask m)
keymap <- gets (gs_navigate . td_gsconfig)
maybe eventLoop diffAndRefresh . M.lookup (m',ks) $ keymap
where diffAndRefresh diff = do
state <- get
let elmap = td_elementmap state
oldPos = td_curpos state
newPos = diff oldPos
newSelectedEl = findInElementMap newPos elmap
when (isJust newSelectedEl) $ do
put state { td_curpos = newPos }
updateElements (catMaybes [(findInElementMap oldPos elmap), newSelectedEl])
eventLoop
handle _ (ButtonEvent { ev_event_type = t, ev_x = x, ev_y = y })
| t == buttonRelease = do
(TwoDState { td_elementmap = elmap, 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) elmap of
Just (_,el) -> return (Just el)
Nothing -> eventLoop
| otherwise = eventLoop
handle _ (ExposeEvent { }) = updateAllElements >> eventLoop
handle _ _ = eventLoop
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 * (1f)
p = v * (1s)
t = v * (1(1f)*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."
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")
fromClassName :: Window -> Bool -> X (String, String)
fromClassName w active = runQuery className w >>= flip defaultColorizer active
twodigitHex :: Word8 -> String
twodigitHex a = printf "%02x" a
colorRangeFromClassName :: (Word8, Word8, Word8)
-> (Word8, Word8, Word8)
-> (Word8, Word8, Word8)
-> (Word8, Word8, Word8)
-> (Word8, Word8, Word8)
-> 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
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))
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
gridselect :: GSConfig a -> [(String,a)] -> X (Maybe a)
gridselect gsconfig elmap =
withDisplay $ \dpy -> do
rootw <- asks theRoot
s <- gets $ screenRect . W.screenDetail . W.current . windowset
win <- liftIO $ mkUnmanagedWindow dpy (defaultScreenOfDisplay dpy) rootw
(rect_x s) (rect_y s) (rect_width s) (rect_height s)
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 s;
screenHeight = toInteger $ rect_height s;
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
elmap' = zip coords elmap
evalTwoD (updateAllElements >> eventLoop)
(TwoDState (head coords)
elmap'
gsconfig
font
screenWidth
screenHeight
win)
else
return Nothing
liftIO $ do
unmapWindow dpy win
destroyWindow dpy win
sync dpy False
releaseXMF font
return selectedElement
gridselectWindow :: GSConfig Window -> X (Maybe Window)
gridselectWindow gsconf = windowMap >>= gridselect gsconf
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
buildDefaultGSConfig :: (a -> Bool -> X (String,String)) -> GSConfig a
buildDefaultGSConfig col = GSConfig 50 130 10 col "xft:Sans-8" defaultGSNav (1/2) (1/2)
defaultGSNav :: NavigateMap
defaultGSNav = M.map tupadd $ M.fromList
[((0,xK_Left) ,(1,0))
,((0,xK_h) ,(1,0))
,((0,xK_Right),(1,0))
,((0,xK_l) ,(1,0))
,((0,xK_Down) ,(0,1))
,((0,xK_j) ,(0,1))
,((0,xK_Up) ,(0,1))
,((0,xK_k) ,(0,1))
]
borderColor :: String
borderColor = "white"
bringSelected :: GSConfig Window -> X ()
bringSelected = withSelectedWindow $ \w -> do
windows (bringWindow w)
XMonad.focus w
windows W.shiftMaster
goToSelected :: GSConfig Window -> X ()
goToSelected = withSelectedWindow $ windows . W.focusWindow
spawnSelected :: GSConfig String -> [String] -> X ()
spawnSelected conf lst = gridselect conf (zip lst lst) >>= flip whenJust spawn
runSelectedAction :: GSConfig (X ()) -> [(String, X ())] -> X ()
runSelectedAction conf actions = do
selectedActionM <- gridselect conf actions
case selectedActionM of
Just selectedAction -> selectedAction
Nothing -> return ()