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
|
-----------------------------------------------------------------------------
-- |
-- Module : Main.hs
-- Copyright : (c) Spencer Janssen 2007
-- License : BSD3-style (see LICENSE)
--
-- Maintainer : sjanssen@cse.unl.edu
-- Stability : unstable
-- Portability : not portable, uses mtl, X11, posix
--
-----------------------------------------------------------------------------
--
-- xmonad, a minimalist, tiling window manager for X11
--
import Data.Bits
import qualified Data.Map as M
import Control.Monad.Reader
import Control.Monad.State
import System.Environment (getArgs)
import Graphics.X11.Xlib hiding (refreshKeyboardMapping)
import Graphics.X11.Xlib.Extras
import Graphics.X11.Xinerama (getScreenInfo)
import XMonad
import Config
import StackSet (new, floating, member)
import Operations
--
-- The main entry point
--
main :: IO ()
main = do
dpy <- openDisplay ""
let dflt = defaultScreen dpy
initcolor c = fst `liftM` allocNamedColor dpy (defaultColormap dpy dflt) c
rootw <- rootWindow dpy dflt
xinesc <- getScreenInfo dpy
nbc <- initcolor normalBorderColor
fbc <- initcolor focusedBorderColor
args <- getArgs
let winset | ("--resume" : s : _) <- args
, [(x, "")] <- reads s = x
| otherwise = new (fromIntegral workspaces) (fromIntegral $ length xinesc)
safeLayouts = case defaultLayouts of [] -> (full, []); (x:xs) -> (x, xs)
cf = XConf
{ display = dpy
, theRoot = rootw
, normalBorder = nbc
, focusedBorder = fbc
}
st = XState
{ windowset = winset
, layouts = M.fromList [(w, safeLayouts) | w <- [0 .. W workspaces - 1]]
, statusGaps = take (length xinesc) $ defaultGaps ++ repeat (0,0,0,0)
, xineScreens = xinesc }
xSetErrorHandler -- in C, I'm too lazy to write the binding: dons
-- setup initial X environment
sync dpy False
selectInput dpy rootw $ substructureRedirectMask .|. substructureNotifyMask
.|. enterWindowMask .|. leaveWindowMask .|. structureNotifyMask
grabKeys dpy rootw
grabButtons dpy rootw
sync dpy False
ws <- scan dpy rootw
allocaXEvent $ \e ->
runX cf st $ do
mapM_ manage ws
-- withWindowSet (io . hPrint stderr) -- uncomment for state logging
-- main loop, for all you HOF/recursion fans out there.
forever $ handle =<< io (nextEvent dpy e >> getEvent e)
where forever a = a >> forever a
-- ---------------------------------------------------------------------
-- IO stuff. Doesn't require any X state
-- Most of these things run only on startup (bar grabkeys)
-- | scan for any initial windows to manage
scan :: Display -> Window -> IO [Window]
scan dpy rootw = do
(_, _, ws) <- queryTree dpy rootw
filterM ok ws
where ok w = do wa <- getWindowAttributes dpy w
return $ not (wa_override_redirect wa)
&& wa_map_state wa == waIsViewable
-- | Grab the keys back
grabKeys :: Display -> Window -> IO ()
grabKeys dpy rootw = do
ungrabKey dpy anyKey anyModifier rootw
forM_ (M.keys keys) $ \(mask,sym) -> do
kc <- keysymToKeycode dpy sym
-- "If the specified KeySym is not defined for any KeyCode,
-- XKeysymToKeycode() returns zero."
when (kc /= '\0') $ mapM_ (grab kc . (mask .|.)) extraModifiers
where grab kc m = grabKey dpy kc m rootw True grabModeAsync grabModeAsync
grabButtons :: Display -> Window -> IO ()
grabButtons dpy rootw = do
ungrabButton dpy anyButton anyModifier rootw
mapM_ (\(m,b) -> mapM_ (grab b . (m .|.)) extraModifiers) (M.keys mouseBindings)
where grab button mask = grabButton dpy button mask rootw False buttonPressMask
grabModeAsync grabModeSync none none
extraModifiers :: [KeyMask]
extraModifiers = [0, numlockMask, lockMask, numlockMask .|. lockMask ]
cleanMask :: KeyMask -> KeyMask
cleanMask = (complement (numlockMask .|. lockMask) .&.)
-- ---------------------------------------------------------------------
-- | Event handler. Map X events onto calls into Operations.hs, which
-- modify our internal model of the window manager state.
--
-- Events dwm handles that we don't:
--
-- [ButtonPress] = buttonpress,
-- [Expose] = expose,
-- [PropertyNotify] = propertynotify,
--
handle :: Event -> X ()
-- run window manager command
handle (KeyEvent {ev_event_type = t, ev_state = m, ev_keycode = code})
| t == keyPress = withDisplay $ \dpy -> do
s <- io $ keycodeToKeysym dpy code 0
whenJust (M.lookup (cleanMask m,s) keys) id
-- manage a new window
handle (MapRequestEvent {ev_window = w}) = withDisplay $ \dpy -> do
wa <- io $ getWindowAttributes dpy w -- ignore override windows
-- need to ignore mapping requests by managed windows not on the current workspace
managed <- isClient w
when (not (wa_override_redirect wa) && not managed) $ do manage w
-- window destroyed, unmanage it
-- window gone, unmanage it
handle (DestroyWindowEvent {ev_window = w}) = whenX (isClient w) $ unmanage w
-- We only handle synthetic unmap events, because real events are confusable
-- with the events produced by 'hide'. ICCCM says that all clients should send
-- synthetic unmap events immediately after unmapping, and later describes
-- clients that do not follow the rule as "obsolete". For now, we make the
-- simplifying assumption that nobody uses clients that were already obsolete
-- in 1994. Note that many alternative methods for resolving the hide/withdraw
-- ambiguity are racy.
handle (UnmapEvent {ev_window = w, ev_send_event = True}) = whenX (isClient w) $ unmanage w
-- set keyboard mapping
handle e@(MappingNotifyEvent {ev_window = w}) = do
io $ refreshKeyboardMapping e
when (ev_request e == mappingKeyboard) $ withDisplay $ io . flip grabKeys w
-- click on an unfocused window, makes it focused on this workspace
handle e@(ButtonEvent {ev_window = w,ev_event_type = t,ev_button = b })
| t == buttonPress = do
isr <- isRoot w
if isr then whenJust (M.lookup (cleanMask (ev_state e), b) mouseBindings) ($ ev_subwindow e)
else focus w
-- If it's the root window, then it's something we
-- grabbed in grabButtons. Otherwise, it's click-to-focus.
-- entered a normal window, makes this focused.
handle e@(CrossingEvent {ev_window = w, ev_event_type = t})
| t == enterNotify && ev_mode e == notifyNormal
&& ev_detail e /= notifyInferior = focus w
-- left a window, check if we need to focus root
handle e@(CrossingEvent {ev_event_type = t})
| t == leaveNotify
= do rootw <- asks theRoot
when (ev_window e == rootw && not (ev_same_screen e)) $ setFocusX rootw
-- configure a window
handle e@(ConfigureRequestEvent {ev_window = w}) = withDisplay $ \dpy -> do
ws <- gets windowset
wa <- io $ getWindowAttributes dpy w
if M.member w (floating ws) || not (member w ws)
then do io $ configureWindow dpy w (ev_value_mask e) $ WindowChanges
{ wc_x = ev_x e
, wc_y = ev_y e
, wc_width = ev_width e
, wc_height = ev_height e
, wc_border_width = fromIntegral borderWidth
, wc_sibling = ev_above e
, wc_stack_mode = ev_detail e }
when (member w ws) (float w)
else io $ allocaXEvent $ \ev -> do
setEventType ev configureNotify
setConfigureEvent ev w w
(wa_x wa) (wa_y wa) (wa_width wa)
(wa_height wa) (ev_border_width e) none (wa_override_redirect wa)
sendEvent dpy w False 0 ev
io $ sync dpy False
-- the root may have configured
handle (ConfigureEvent {ev_window = w}) = whenX (isRoot w) rescreen
handle _ = return () -- trace (eventName e) -- ignoring
|
