1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
-- Common ways to select workspaces
module Rahm.Desktop.Workspaces
( getPopulatedWorkspaces,
next,
prev,
lastWorkspaceId,
firstWorkspaceId,
windowsInCurrentWorkspace,
getHorizontallyOrderedScreens,
accompaningWorkspace,
adjacentWorkspaceNotVisible,
adjacentWorkspace,
viewAdjacent,
viewAdjacentTo,
adjacentScreen,
withScreen,
workspaceWithWindow,
getScreensOnSamePlane,
getScreensOnDifferentPlane,
WorkspaceState (..),
)
where
import Control.Arrow (Arrow ((&&&)))
import Control.Monad.Trans (lift)
import Control.Monad.Trans.Maybe (MaybeT (MaybeT))
import Data.Char (isUpper, toLower, toUpper, chr, ord, isDigit)
import Data.List (find, sort, sortBy, sortOn, (\\))
import Data.List.Safe ((!!))
import Data.Maybe (fromMaybe, mapMaybe)
import Debug.Trace
import Rahm.Desktop.Common (getCurrentWorkspace, gotoWorkspace, runMaybeT_)
import Rahm.Desktop.Logger
import qualified Rahm.Desktop.StackSet as W
import Text.Printf (printf)
import XMonad
( Rectangle (Rectangle),
ScreenDetail (SD),
ScreenId,
Window,
WindowSet,
WorkspaceId,
X,
windows,
withWindowSet,
)
import Prelude hiding ((!!))
newtype Selector = Selector (forall a. (a -> Bool) -> [a] -> Maybe a)
data WorkspaceState = Current | Hidden | Visible
deriving (Ord, Eq, Enum)
-- Returns all the workspaces that are either visible, current or Hidden but
-- have windows and that workspace's state.
--
-- In other words, filters out workspaces that have no windows and are not
-- visible.
--
-- This function will sort the result by the workspace tag.
getPopulatedWorkspaces ::
W.StackSet String l a sid sd -> [(WorkspaceState, W.Workspace String l a)]
getPopulatedWorkspaces (W.StackSet (W.Screen cur _ _) vis hi _) =
filter ((/= "*") . W.tag . snd) $
sortOn (W.tag . snd) $
mapMaybe (\w@(W.Workspace _ _ s) -> fmap (const (Hidden, w)) s) hi
++ map (\(W.Screen w _ _) -> (Visible, w)) vis
++ [(Current, cur)]
next :: Selector
next = Selector $ \f l -> select f l l
where
select f (x : y : xs) _ | f x = Just y
select f [x] (y : _) | f x = Just y
select f (x : xs) orig = select f xs orig
select f _ _ = Nothing
prev :: Selector
prev = Selector $ \f l ->
let (Selector fn) = next in fn f (reverse l)
lastWorkspaceId :: X WorkspaceId
lastWorkspaceId =
W.tag . snd . last <$> withWindowSet (return . getPopulatedWorkspaces)
firstWorkspaceId :: X WorkspaceId
firstWorkspaceId =
W.tag . snd . head <$> withWindowSet (return . getPopulatedWorkspaces)
windowsInCurrentWorkspace :: X [Window]
windowsInCurrentWorkspace = withWindowSet $
\(W.StackSet (W.Screen (W.Workspace _ _ s) _ _) _ _ _) -> do
return $ W.integrate' s
getHorizontallyOrderedScreens ::
W.StackSet wid l a ScreenId ScreenDetail ->
[(Bool, W.Screen wid l a ScreenId ScreenDetail)]
-- ^ Returns a list of screens ordered from leftmost to rightmost.
getHorizontallyOrderedScreens windowSet =
flip sortBy screens $ \sc1 sc2 ->
let (SD (Rectangle x1 _ _ _)) = W.screenDetail (snd sc1)
(SD (Rectangle x2 _ _ _)) = W.screenDetail (snd sc2)
in x1 `compare` x2
where
screens = (True, W.current windowSet) : map (False,) (W.visible windowSet)
getVerticallyOrderedScreens ::
W.StackSet wid l a ScreenId ScreenDetail ->
[(Bool, W.Screen wid l a ScreenId ScreenDetail)]
-- ^ Returns a list of screens ordered from top to bottom
getVerticallyOrderedScreens windowSet =
flip sortBy screens $ \sc1 sc2 ->
let (SD (Rectangle _ y1 _ _)) = W.screenDetail (snd sc1)
(SD (Rectangle _ y2 _ _)) = W.screenDetail (snd sc2)
in y1 `compare` y2
where
screens = (True, W.current windowSet) : map (False,) (W.visible windowSet)
-- | Returns screens which are horizontally ordered, but are on the same "plane"
-- as the current screen. A screen is considered on the same "plane" if it's
-- middle point is vertically oriented within the vertical boundaries of the
-- current screen.
getScreensOnSamePlane ::
W.StackSet wid l a ScreenId ScreenDetail ->
[(Bool, W.Screen wid l a ScreenId ScreenDetail)]
getScreensOnSamePlane ss =
filter matchesYCenter $ getHorizontallyOrderedScreens ss
where
yCenter
| (SD (Rectangle _ y _ h)) <- W.screenDetail . W.current $ ss =
(y + fromIntegral h) `div` 2
matchesYCenter (_, W.screenDetail -> (SD (Rectangle _ y _ h))) =
y < yCenter && y + fromIntegral h > yCenter
-- | Returns screens which are vertically ordered, but are on a different plane
-- from the current screen.
getScreensOnDifferentPlane ::
W.StackSet wid l a ScreenId ScreenDetail ->
[(Bool, W.Screen wid l a ScreenId ScreenDetail)]
getScreensOnDifferentPlane ss =
filter (not . matchesScreen . getYCenter . snd) $ getVerticallyOrderedScreens ss
where
getYCenter (W.screenDetail -> SD (Rectangle _ y _ h)) =
y + (fromIntegral h `div` 2)
matchesScreen yCenter
| (SD (Rectangle _ y _ h)) <- W.screenDetail (W.current ss) =
yCenter < y + fromIntegral h && yCenter > y
accompaningWorkspace :: WorkspaceId -> WorkspaceId
accompaningWorkspace [s]
| isDigit s = show (fl (ord s - ord '0'))
where
fl x | even x = x + 1
fl x = x - 1
accompaningWorkspace [s] =
return $
if isUpper s
then toLower s
else toUpper s
accompaningWorkspace s = s
adjacentWorkspaceNotVisible :: Selector -> WorkspaceId -> X WorkspaceId
adjacentWorkspaceNotVisible (Selector selector) from =
withWindowSet $ \ss ->
let tags =
sort $
W.tag . snd
<$> filter
(\x -> fst x /= Visible)
( getPopulatedWorkspaces ss
)
in return $ fromMaybe from $ selector (== from) tags
adjacentWorkspace :: Selector -> WorkspaceId -> X WorkspaceId
adjacentWorkspace (Selector selector) from =
withWindowSet $ \ss ->
let tags = sort $ W.tag . snd <$> getPopulatedWorkspaces ss
in return $ fromMaybe from $ selector (== from) tags
viewAdjacent :: Selector -> X ()
viewAdjacent sel =
gotoWorkspace =<< (adjacentWorkspaceNotVisible sel =<< getCurrentWorkspace)
viewAdjacentTo :: X (Maybe WorkspaceId) -> Selector -> X ()
viewAdjacentTo wsM (Selector sel) = runMaybeT_ $ do
lift $ logs Debug "viewAdjacentTo"
tag <- MaybeT wsM
lift $ logs Debug "from: %s" tag
ws <- MaybeT $ withWindowSet $ \ws ->
let vis = map (W.tag . W.workspace) (W.screens ws)
allW = sort $ map (W.tag . snd) (getPopulatedWorkspaces ws)
final = allW \\ (vis \\ [tag])
in return $ sel (== tag) final
lift $ logs Debug "to: %s" ws
lift $ windows $ W.switchWorkspaces tag ws
adjacentScreen :: Selector -> X WorkspaceId
adjacentScreen (Selector f) = do
(screens, current) <-
withWindowSet $ return . (getHorizontallyOrderedScreens &&& W.current)
return $ W.tag $ W.workspace $ maybe current snd (f fst screens)
withScreen :: (WorkspaceId -> WindowSet -> WindowSet) -> Int -> X ()
withScreen fn n = do
windows $ \windowSet ->
case map snd (getHorizontallyOrderedScreens windowSet) !! n of
Nothing -> windowSet
Just screen -> fn (W.tag $ W.workspace screen) windowSet
workspaceWithWindow :: Window -> X (Maybe WorkspaceId)
workspaceWithWindow wid = withWindowSet $ \(W.StackSet c v h _) ->
return $
W.tag
<$> find
(\(W.Workspace _ _ stack) -> wid `elem` W.integrate' stack)
(map W.workspace (c : v) ++ h)
|
