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|
module Rahm.Desktop.StackSet
( masterWindow,
allVisibleWindows,
windowsOnWorkspace,
findWorkspace,
dbgStackSet,
ensureWorkspace,
swapWorkspaces,
greedyView,
shiftWin,
screenRotateBackward,
screenRotateForward,
mapWindows,
swapWindows,
getLocationWorkspace,
switchWorkspaces,
WindowLocation (..),
windowMemberOfWorkspace,
findWindow,
sinkBy,
modifyWorkspace,
getFocusedWindow,
module W,
)
where
import Control.Monad.Writer
import Data.List (find)
import Data.List.Safe (head)
import qualified Data.Map as Map
( fromList,
keys,
lookup,
mapKeys,
)
import Data.Maybe (catMaybes, fromMaybe, listToMaybe)
import Text.Printf (printf)
import XMonad (Rectangle (..), ScreenDetail (..), WindowSet)
import XMonad.StackSet as W hiding (greedyView, shiftWin)
import qualified XMonad.StackSet (shiftWin)
import Prelude hiding (head)
data WindowLocation i l a s sd
= OnScreen (Screen i l a s sd)
| OnHiddenWorkspace (Workspace i l a)
| Floating
getLocationWorkspace :: WindowLocation i l a s sd -> Maybe (Workspace i l a)
getLocationWorkspace (OnScreen (Screen w _ _)) = Just w
getLocationWorkspace (OnHiddenWorkspace w) = Just w
getLocationWorkspace _ = Nothing
allVisibleWindows :: StackSet i l a s sd -> [a]
allVisibleWindows =
concatMap (W.integrate' . W.stack . W.workspace) <$> W.screens
mapWindows :: (Ord a, Ord b) => (a -> b) -> StackSet i l a s sd -> StackSet i l b s sd
mapWindows fn (StackSet cur vis hid float) =
StackSet
(mapWindowsScreen cur)
(map mapWindowsScreen vis)
(map mapWindowsWorkspace hid)
(Map.mapKeys fn float)
where
mapWindowsScreen (Screen work a b) = Screen (mapWindowsWorkspace work) a b
mapWindowsWorkspace (Workspace t l stack) =
Workspace t l (fmap (fmap fn) stack)
swapWindows :: (Ord a) => [(a, a)] -> StackSet i l a s d -> StackSet i l a s d
swapWindows toSwap = mapWindows $ \w ->
fromMaybe w (Map.lookup w toSwapM)
where
toSwapM = Map.fromList (toSwap ++ map (\(a, b) -> (b, a)) toSwap)
masterWindow :: StackSet i l a s sd -> Maybe a
masterWindow = head . integrate' . stack . workspace . current
findWorkspace ::
(Eq i) =>
i ->
StackSet i l a s sd ->
Maybe (Workspace i l a)
findWorkspace wid = find ((== wid) . tag) . workspaces
ensureWorkspace ::
(Eq i) =>
i ->
StackSet i l a s sd ->
(StackSet i l a s sd, Workspace i l a)
ensureWorkspace t ss =
case findWorkspace t ss of
Nothing ->
let ws = Workspace t (layout . workspace . current $ ss) Nothing
in (ss {hidden = ws : hidden ss}, ws)
Just ws -> (ss, ws)
ensureWorkspaces ::
(Eq i) =>
[i] ->
StackSet i l a s sd ->
(StackSet i l a s sd, [Workspace i l a])
ensureWorkspaces (t : ts) ss =
let (ss', w) = ensureWorkspace t ss
(ss'', ws) = ensureWorkspaces ts ss'
in (ss'', w : ws)
ensureWorkspaces [] ss = (ss, [])
swapWorkspaces ::
(Eq i) =>
i ->
i ->
StackSet i l a s sd ->
StackSet i l a s sd
swapWorkspaces tag1 tag2 =
W.mapWorkspace
( \(W.Workspace t a b) ->
W.Workspace
( case (t == tag1, t == tag2) of
(True, False) -> tag2
(False, True) -> tag1
_ -> t
)
a
b
)
switchWorkspaces ::
(Eq i) =>
i ->
i ->
StackSet i l a s sd ->
StackSet i l a s sd
switchWorkspaces t1 t2 (ensureWorkspaces [t1, t2] -> (ss, [w1, w2])) =
W.mapWorkspace
( \case
(Workspace t _ _) | t == t1 -> w2
(Workspace t _ _) | t == t2 -> w1
w -> w
)
ss
dbgStackSet :: WindowSet -> String
dbgStackSet ws@(W.StackSet cur vis hidden _) = execWriter $ do
tell "* " >> logScreen cur >> tell "\n"
mapM_ (\s -> tell " " >> logScreen s >> tell "\n") vis
mapM_ logWorkspace (W.workspaces ws)
where
logWorkspace (Workspace tag _ st) = do
tell $ printf "WS %s\n" tag
forM_ st $ \(Stack foc up down) -> do
mapM_ (tell . printf " %d\n") up
tell $ printf " * %d\n" foc
mapM_ (tell . printf " %d\n") down
logScreen (Screen ws sid (SD (Rectangle _ _ w h))) = do
tell (printf "id=%s (%sx%s) - [%s]" (show sid) (show w) (show h) (W.tag ws))
greedyView :: (Eq i) => i -> StackSet i l a s sd -> StackSet i l a s sd
greedyView wid ss = switchWorkspaces (tag . workspace . current $ ss) wid ss
shiftWin :: (Ord a, Eq s, Eq i) => i -> a -> StackSet i l a s sd -> StackSet i l a s sd
shiftWin wid a = XMonad.StackSet.shiftWin wid a . fst . ensureWorkspace wid
windowsOnWorkspace :: (Eq i) => i -> StackSet i l a s sd -> [a]
windowsOnWorkspace i ss = fromMaybe [] $ do
ws <- find ((== i) . W.tag) (W.workspaces ss)
s <- W.stack ws
return (W.integrate s)
screenRotateBackward :: W.StackSet i l a sid sd -> W.StackSet i l a sid sd
screenRotateBackward (W.StackSet current visible others floating) = do
let screens = current : visible
workspaces = tail $ cycle $ map W.workspace screens
(current' : visible') = zipWith (\s w -> s {workspace = w}) screens workspaces
in W.StackSet current' visible' others floating
screenRotateForward :: W.StackSet i l a sid sd -> W.StackSet i l a sid sd
screenRotateForward (W.StackSet current visible others floating) = do
let screens = current : visible
workspaces = rcycle $ map W.workspace screens
(current' : visible') = zipWith (\s w -> s {workspace = w}) screens workspaces
in W.StackSet current' visible' others floating
where
rcycle l = last l : l
{- Finds a Window and returns the screen its on and the workspace its on.
- Returns nothing if the window doesn't exist.
-
- If the window is not a screen Just (Nothing, workspace) is returned.
- If the window is a floating window Just (Nothing, Nothing) is returned. -}
findWindow ::
(Eq a) => StackSet i l a s sd -> a -> Maybe (WindowLocation i l a s sd)
findWindow (StackSet cur vis hid float) win =
listToMaybe . catMaybes $
map findWindowScreen (cur : vis)
++ map findWindowWorkspace hid
++ [findWindowFloat]
where
findWindowScreen s@(Screen ws _ _) =
if windowMemberOfWorkspace ws win
then Just (OnScreen s)
else Nothing
findWindowWorkspace w =
if windowMemberOfWorkspace w win
then Just (OnHiddenWorkspace w)
else Nothing
findWindowFloat =
if win `elem` Map.keys float
then Just Floating
else Nothing
windowMemberOfWorkspace :: (Eq a) => Workspace i l a -> a -> Bool
windowMemberOfWorkspace (Workspace _ _ s) w = w `elem` integrate' s
modifyWorkspace :: (Eq i) => i -> (Workspace i l a -> Workspace i l a) -> StackSet i l a s sd -> StackSet i l a s sd
modifyWorkspace tag fn =
mapWorkspace
( \ws ->
if W.tag ws == tag
then fn ws
else ws
)
getFocusedWindow :: StackSet i l a s sd -> Maybe a
getFocusedWindow (StackSet cur _ _ _) = W.focus <$> (W.stack . W.workspace) cur
sinkBy :: (Eq a, Eq i, Ord a) => a -> a -> StackSet i l a s sd -> StackSet i l a s sd
sinkBy win toSinkBy ss =
case (findTag win ss, findTag toSinkBy ss) of
(Nothing, _) -> ss
(Just w1, Just w2)
| w1 == w2 ->
modifyWorkspace
w1
( \(W.Workspace t l s) ->
W.Workspace t l (Just $ insertBy win toSinkBy s)
)
$ W.delete win ss
_ -> W.sink win ss
where
insertBy win to Nothing = W.Stack win [] []
insertBy win to (Just (W.Stack foc down up)) =
case () of
()
| to `elem` down ->
W.Stack
foc
(concatMap (\e -> if e == to then [e, win] else [e]) down)
up
()
| to `elem` up ->
W.Stack
foc
down
(concatMap (\e -> if e == to then [win, e] else [e]) up)
() -> W.Stack win (foc : down) up
|
