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|
module Rahm.Desktop.StackSet
( masterWindow,
findWorkspace,
ensureWorkspace,
swapWorkspaces,
greedyView,
shiftWin,
screenRotateBackward,
screenRotateForward,
mapWindows,
swapWindows,
getLocationWorkspace,
WindowLocation (..),
windowMemberOfWorkspace,
findWindow,
module W,
)
where
import Data.Default ()
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 XMonad.StackSet as W
( RationalRect (..),
Screen (..),
Stack (..),
StackSet (..),
Workspace (..),
abort,
allWindows,
currentTag,
delete,
delete',
differentiate,
ensureTags,
filter,
findTag,
float,
focusDown,
focusDown',
focusMaster,
focusUp,
focusUp',
focusWindow,
index,
insertUp,
integrate,
integrate',
lookupWorkspace,
mapLayout,
mapWorkspace,
member,
modify,
modify',
new,
peek,
renameTag,
screens,
shift,
shiftMaster,
sink,
swapDown,
swapMaster,
swapUp,
tagMember,
view,
workspaces,
)
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
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)
swapWorkspaces ::
(Eq i) =>
i ->
i ->
StackSet i l a s sd ->
StackSet i l a s sd
swapWorkspaces wid1 wid2 ss =
let (ss', workspace1) = ensureWorkspace wid1 ss
(ss'', workspace2) = ensureWorkspace wid2 ss'
in mapWorkspace
( \w ->
case () of
_ | tag w == wid1 -> workspace2
_ | tag w == wid2 -> workspace1
_ -> w
)
ss''
greedyView :: (Eq i) => i -> StackSet i l a s sd -> StackSet i l a s sd
greedyView wid ss = swapWorkspaces (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
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
|
