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{-# LANGUAGE MultiWayIf #-}
module Rahm.Desktop.WorkspaceWheel
( displayWorkspaceWheel,
displayWorkspaceWheelAtPoint,
displayWorkspaceWheelInCenter,
)
where
import Control.Arrow (Arrow (first, second))
import Control.Concurrent (threadDelay)
import Control.Monad (forM_)
import Control.Monad.Trans.Maybe (MaybeT (runMaybeT))
import Data.Function (fix)
import Data.List (find, sortBy)
import Data.Maybe (fromMaybe, isNothing)
import Data.Monoid (Endo (Endo, appEndo))
import Data.Ord (comparing)
import Data.Word
import qualified Graphics.X11 as X
import Rahm.Desktop.Common (click, gotoWorkspace, pointerLocation, pointerScreen)
import Rahm.Desktop.Keys.Wml (getAndResetWindowSelection, getAndResetWindowSelectionOrCurrent)
import Rahm.Desktop.Layout.PinWindow (withWindowsUnpinned)
import Rahm.Desktop.Marking (setAlternateWindows, setAlternateWorkspace)
import Rahm.Desktop.StackSet as W
import Rahm.Desktop.Submap (ButtonOrKeyEvent (ButtonPress, KeyPress), nextButton, nextButtonOrKeyEvent)
import System.IO
import Text.Printf (printf)
import XMonad
import qualified XMonad.Operations as X
import XMonad.Util.Run (spawnPipe)
dzenSize :: (Integral a) => a
dzenSize = 100
data ScreenType = Current | Visible | Hidden deriving (Eq)
displayWorkspaceWheel :: X ()
displayWorkspaceWheel = uncurry displayWorkspaceWheelAtPoint =<< pointerLocation
data Ring a = Ring Int [a] (Maybe a) [a]
mkRing :: [a] -> Ring a
mkRing lst =
let as = cycle lst
rev = cycle (reverse lst)
in Ring (length lst) rev Nothing as
ringCur :: Ring a -> Maybe a
ringCur (Ring _ _ a _) = a
ringAdv :: Ring a -> Ring a
ringAdv (Ring s p Nothing (n : ns)) = Ring s p (Just n) ns
ringAdv (Ring s p (Just a) (n : ns)) = Ring s (a : p) (Just n) ns
ringPrev :: Ring a -> Ring a
ringPrev (Ring s (p : ps) Nothing ns) = Ring s ps (Just p) ns
ringPrev (Ring s (p : ps) (Just a) ns) = Ring s ps (Just p) (a : ns)
ringFastForwardTo :: (a -> Bool) -> Ring a -> Ring a
ringFastForwardTo fn ring@(Ring s _ a _) =
case ringFastForwardTo' fn s ring of
ring'@(Ring s' p' (Just a') n') | isNothing a -> Ring s' (a' : p') Nothing n'
ring' -> ring'
where
ringFastForwardTo' _ 0 ring = ring
ringFastForwardTo' fn _ ring@(Ring _ _ (Just a) _) | fn a = ring
ringFastForwardTo' fn n ring = ringFastForwardTo' fn (n - 1) (ringAdv ring)
displayWorkspaceWheelInCenter :: X ()
displayWorkspaceWheelInCenter =
mapM_
( \(W.screenDetail -> (SD (Rectangle x y w h))) ->
displayWorkspaceWheelAtPoint
(fromIntegral $ x + (fromIntegral w `div` 2))
(fromIntegral $ y + (fromIntegral h `div` 2))
)
=<< pointerScreen
displayWorkspaceWheelAtPoint :: Int -> Int -> X ()
displayWorkspaceWheelAtPoint px py = do
click
(W.StackSet cur vis other _floating) <- gets windowset
screen <- fromMaybe cur <$> pointerScreen
let allWorkspaces :: [(W.Workspace WorkspaceId (Layout Window) Window, ScreenType)]
allWorkspaces =
sortBy (comparing (W.tag . fst)) $
((W.workspace cur, Current) : map ((,Visible) . W.workspace) vis)
++ filter
(\(w, _) -> (not . null . W.integrate' . W.stack) w && W.tag w /= "*")
(map (,Hidden) other)
(SD rect) = W.screenDetail screen
dzenRects = calculatePositions px py rect allWorkspaces
rectsToWorkspaces = map (second (first W.tag)) dzenRects
dzenPipes <- mapM (uncurry launchDzen) rectsToWorkspaces
after <-
( fix $ \recur ring -> do
evt <- runMaybeT nextButtonOrKeyEvent
let stop = return ()
let retry = recur ring
case evt of
Nothing -> return stop -- timeout
Just (ButtonPress _ b) ->
withDisplay $ \d -> do
(_, _, _, fi -> cx, fi -> cy, _, _, _) <-
io $ X.queryPointer d =<< rootWindow d 0
case find (\(r, _) -> pointWithin cx cy r) rectsToWorkspaces of
Just (_, (ws, _)) ->
if
| b == button1 -> do
gotoWorkspace ws
return (displayWorkspaceWheelAtPoint px py)
| b == button3 -> do
selection <- getAndResetWindowSelectionOrCurrent
withWindowsUnpinned selection $
windows $
appEndo $
mconcat (map (Endo . W.shiftWin ws) selection)
return (displayWorkspaceWheelAtPoint px py)
| b == 13 -> do
winSet <- gets windowset
let mWs = find ((== ws) . W.tag) (W.workspaces winSet)
forM_ mWs $ \ws -> do
let allWindows = W.integrate' (W.stack ws)
setAlternateWindows allWindows
mapM_ (`setAlternateWorkspace` W.tag ws) allWindows
mapM_ killWindow allWindows
-- Preemptively delete the windows so we show the updates
-- immediately.
windows $
appEndo $
mconcat $
map (Endo . W.delete) allWindows
X.refresh
return (displayWorkspaceWheelAtPoint px py)
| otherwise -> return stop
Nothing -> return stop
Just (KeyPress _ sym _ _) -> do
if
| sym == xK_l -> do
mapM_ deselect (ringCur ring)
let ring' = ringAdv ring
mapM_ select (ringCur ring')
recur ring'
| sym == xK_h -> do
mapM_ deselect (ringCur ring)
let ring' = ringPrev ring
mapM_ select (ringCur ring')
recur ring'
| sym == xK_space || sym == xK_Return -> do
mapM_
(\(_, (_, (ws, _))) -> gotoWorkspace ws)
(ringCur ring)
return stop
| otherwise -> return stop
)
( ringFastForwardTo (\(_, (_, (_, n))) -> n == Current) $
mkRing $
zip dzenPipes rectsToWorkspaces
)
io $ do
mapM_ hClose dzenPipes
after
where
fi :: (Integral a, Num b) => a -> b
fi = fromIntegral
toInt :: (Integral a) => a -> Int
toInt = fromIntegral
deselect :: (Handle, (Rectangle, (String, ScreenType))) -> X ()
deselect (pipe, (rect, (wsName, screenType))) = io $ hPutStrLn pipe wsName
select :: (Handle, (Rectangle, (String, ScreenType))) -> X ()
select (pipe, (rect, (wsName, screenType))) =
io $ hPutStrLn pipe $ printf "^fg(#ff0)%s" wsName
-- Returns, starting x, dzen width
calculatePositions :: Int -> Int -> Rectangle -> [a] -> [(Rectangle, a)]
calculatePositions
pointerX'
pointerY'
(Rectangle (toInt -> x) (toInt -> y) (toInt -> w) (toInt -> h))
as =
let radius :: (Num a) => a
radius = 300
nas = max 2 (length as)
dPhi = 2 * pi / fromIntegral nas
circDiff = sqrt $ (radius * cos dPhi - radius) ** 2 + (radius * sin dPhi) ** 2
size :: (Integral a) => a
size = round $ min 100 (circDiff * 0.5)
sizeD2 :: (Integral a) => a
sizeD2 = fi size `div` 2
pointerX =
max (radius + sizeD2 + x) $
min pointerX' (x + w - radius - sizeD2)
pointerY =
max (radius + sizeD2 + y) $
min pointerY' (y + h - radius - sizeD2)
in zipWith
( \phi a ->
let xpos = radius * cos phi + fi pointerX
ypos = radius * sin phi + fi pointerY
r =
Rectangle
(round xpos - sizeD2)
(round ypos - sizeD2)
(fi size)
(fi size)
in (r, a)
)
[3 * pi / 2, 3 * pi / 2 + dPhi ..]
as
embedRectangle :: Rectangle -> Int -> Int -> Rectangle
embedRectangle r@(Rectangle x y w h) w' h' | w' > fi w || h' > fi h = r
embedRectangle (Rectangle x y w h) w' h' =
Rectangle
(x + fi (w `div` 2) - fi (w' `div` 2))
(y + fi (h `div` 2) - fi (h' `div` 2))
(fi w')
(fi h')
launchDzen :: Rectangle -> (String, ScreenType) -> X Handle
launchDzen (Rectangle x y w h) (wsTag, screenType) = do
pipe <-
spawnPipe
( printf
"dzen2 -fn \"Monofur Nerd Font:size=15\" -x %d -y %d -w %d -h %d -bg '#222' -fg '%s'"
x
y
w
h
( case screenType of
Current -> "#ff8888"
Visible -> "#8888ff"
Hidden -> "#aaa"
)
)
io $ do
hPutStrLn pipe wsTag
hFlush pipe
return pipe
|
