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
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
|
{-# OPTIONS -fglasgow-exts #-}
-----------------------------------------------------------------------------
-- |
-- Module : XMonadContrib.Mosaic
-- Copyright : (c) David Roundy <droundy@darcs.net>
-- License : BSD3-style (see LICENSE)
--
-- Maintainer : David Roundy <droundy@darcs.net>
-- Stability : unstable
-- Portability : unportable
--
-- This module defines a \"mosaic\" layout, which tries to give each window a
-- user-configurable relative area, while also trying to give them aspect
-- ratios configurable at run-time by the user.
--
-----------------------------------------------------------------------------
module XMonad.Layout.Mosaic (
-- * Usage
-- $usage
mosaic, expandWindow, shrinkWindow, squareWindow, myclearWindow,
tallWindow, wideWindow, flexibleWindow,
getName, withNamedWindow ) where
import Control.Monad.State ( State, put, get, runState )
import System.Random ( StdGen, mkStdGen )
import Graphics.X11.Xlib
import XMonad hiding ( trace )
import XMonad.Layouts ( Resize(Shrink, Expand) )
import qualified XMonad.StackSet as W
import qualified Data.Map as M
import Data.List ( sort )
import Data.Typeable ( Typeable )
import Control.Monad ( mplus )
import XMonad.Util.NamedWindows
import XMonad.Util.Anneal
-- $usage
-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:
--
-- > import qualified Data.Map as M
-- > import XMonad.Layout.Mosaic
-- > import XMonad.Operations
--
-- Then edit your @layoutHook@ by adding the Mosaic layout:
--
-- > myLayouts = mosaic 0.25 0.5 M.empty ||| Full ||| etc..
-- > main = xmonad dafaultConfig { layoutHook = myLayouts }
--
-- For more detailed instructions on editing the layoutHook see:
--
-- "XMonad.Doc.Extending#Editing_the_layout_hook"
--
-- In the key-bindings, do something like:
--
-- > , ((controlMask .|. modMask x .|. shiftMask, xK_h), withNamedWindow (sendMessage . tallWindow))
-- > , ((controlMask .|. modMask x .|. shiftMask, xK_l), withNamedWindow (sendMessage . wideWindow))
-- > , ((modMask x .|. shiftMask, xK_h ), withNamedWindow (sendMessage . shrinkWindow))
-- > , ((modMask x .|. shiftMask, xK_l ), withNamedWindow (sendMessage . expandWindow))
-- > , ((modMask x .|. shiftMask, xK_s ), withNamedWindow (sendMessage . squareWindow))
-- > , ((modMask x .|. shiftMask, xK_o ), withNamedWindow (sendMessage . myclearWindow))
-- > , ((controlMask .|. modMask x .|. shiftMask, xK_o ), withNamedWindow (sendMessage . flexibleWindow))
--
-- For detailed instruction on editing the key binding see:
--
-- "XMonad.Doc.Extending#Editing_key_bindings".
data HandleWindow = ExpandWindow NamedWindow | ShrinkWindow NamedWindow
| SquareWindow NamedWindow | ClearWindow NamedWindow
| TallWindow NamedWindow | WideWindow NamedWindow
| FlexibleWindow NamedWindow
deriving ( Typeable, Eq )
instance Message HandleWindow
expandWindow, shrinkWindow, squareWindow, flexibleWindow, myclearWindow,tallWindow, wideWindow :: NamedWindow -> HandleWindow
expandWindow = ExpandWindow
shrinkWindow = ShrinkWindow
squareWindow = SquareWindow
flexibleWindow = FlexibleWindow
myclearWindow = ClearWindow
tallWindow = TallWindow
wideWindow = WideWindow
largeNumber :: Int
largeNumber = 50
defaultArea :: Double
defaultArea = 1
flexibility :: Double
flexibility = 0.1
mosaic :: Double -> Double -> M.Map NamedWindow [WindowHint] -> MosaicLayout Window
mosaic d t h = Mosaic d t h
data MosaicLayout a = Mosaic Double Double (M.Map NamedWindow [WindowHint])
deriving ( Show, Read )
instance LayoutClass MosaicLayout Window where
doLayout (Mosaic _ t h) r w = mosaicL t h r (W.integrate w)
pureMessage (Mosaic d t h) m = (m1 `fmap` fromMessage m) `mplus` (m2 `fmap` fromMessage m)
where
m1 Shrink = Mosaic d (t/(1+d)) h
m1 Expand = Mosaic d (t*(1+d)) h
m2 (ExpandWindow w) = Mosaic d t (multiply_area (1+d) w h)
m2 (ShrinkWindow w) = Mosaic d t (multiply_area (1/(1+ d)) w h)
m2 (SquareWindow w) = Mosaic d t (set_aspect_ratio 1 w h)
m2 (FlexibleWindow w) = Mosaic d t (make_flexible w h)
m2 (TallWindow w) = Mosaic d t (multiply_aspect (1/(1+d)) w h)
m2 (WideWindow w) = Mosaic d t (multiply_aspect (1+d) w h)
m2 (ClearWindow w) = Mosaic d t (M.delete w h)
description _ = "The Original Mosaic"
multiply_area :: Double -> NamedWindow
-> M.Map NamedWindow [WindowHint] -> M.Map NamedWindow [WindowHint]
multiply_area a = alterlist f where f [] = [RelArea (defaultArea*a)]
f (RelArea a':xs) = RelArea (a'*a) : xs
f (x:xs) = x : f xs
set_aspect_ratio :: Double -> NamedWindow
-> M.Map NamedWindow [WindowHint] -> M.Map NamedWindow [WindowHint]
set_aspect_ratio r = alterlist f where f [] = [AspectRatio r]
f (FlexibleAspectRatio _:x) = AspectRatio r:x
f (AspectRatio _:x) = AspectRatio r:x
f (x:xs) = x:f xs
make_flexible :: NamedWindow
-> M.Map NamedWindow [WindowHint] -> M.Map NamedWindow [WindowHint]
make_flexible = alterlist (map f) where f (AspectRatio r) = FlexibleAspectRatio r
f (FlexibleAspectRatio r) = AspectRatio r
f x = x
multiply_aspect :: Double -> NamedWindow
-> M.Map NamedWindow [WindowHint] -> M.Map NamedWindow [WindowHint]
multiply_aspect r = alterlist f where f [] = [FlexibleAspectRatio r]
f (AspectRatio r':x) = AspectRatio (r*r'):x
f (FlexibleAspectRatio r':x) = FlexibleAspectRatio (r*r'):x
f (x:xs) = x:f xs
findlist :: Ord k => k -> M.Map k [a] -> [a]
findlist = M.findWithDefault []
alterlist :: (Ord k, Ord a) => ([a] -> [a]) -> k -> M.Map k [a] -> M.Map k [a]
alterlist f k = M.alter f' k
where f' Nothing = f' (Just [])
f' (Just xs) = case f xs of
[] -> Nothing
xs' -> Just xs'
mosaicL :: Double -> M.Map NamedWindow [WindowHint]
-> Rectangle -> [Window] -> X ([(Window, Rectangle)],Maybe (MosaicLayout Window))
mosaicL _ _ _ [] = return ([], Nothing)
mosaicL f hints origRect origws
= do namedws <- mapM getName origws
let sortedws = reverse $ map the_value $ sort $ map (\w -> Rated (sumareas [w]) w) namedws
-- TODO: remove all this dead code
myv = runCountDown largeNumber $ mosaic_splits even_split origRect Vertical sortedws
myv2 = mc_mosaic sortedws Vertical
myh2 = mc_mosaic sortedws Horizontal
-- myv2 = maxL $ runCountDown largeNumber $
-- sequence $ replicate mediumNumber $
-- mosaic_splits one_split origRect Vertical sortedws
myh = runCountDown largeNumber $ mosaic_splits even_split origRect Horizontal sortedws
-- myh2 = maxL $ runCountDown largeNumber $
-- sequence $ replicate mediumNumber $
-- mosaic_splits one_split origRect Horizontal sortedws
return (map (\(nw,r)->(--trace ("rate1:"++ unlines [show nw,
-- show $ rate f meanarea (findlist nw hints) r,
-- show r,
-- show $ area r/meanarea,
-- show $ findlist nw hints]) $
unName nw,crop' (findlist nw hints) r)) $
flattenMosaic $ the_value $ maxL [myh,myv,myh2,myv2], Nothing)
where mosaic_splits _ _ _ [] = return $ Rated 0 $ M []
mosaic_splits _ r _ [w] = return $ Rated (rate f meanarea (findlist w hints) r) $ OM (w,r)
mosaic_splits spl r d ws = maxL `fmap` mapCD (spl r d) (init $ allsplits ws)
even_split :: Rectangle -> CutDirection -> [[NamedWindow]]
-> State CountDown (Rated Double (Mosaic (NamedWindow, Rectangle)))
even_split r d [ws] = even_split r d $ map (:[]) ws
even_split r d wss =
do let areas = map sumareas wss
let wsr_s :: [([NamedWindow], Rectangle)]
wsr_s = zip wss (partitionR d r areas)
submosaics <- mapM (\(ws',r') ->
mosaic_splits even_split r' (otherDirection d) ws') wsr_s
return $ fmap M $ catRated submosaics
{-
another_mosaic :: [NamedWindow] -> CutDirection
-> Rated Double (Mosaic (NamedWindow,Rectangle))
another_mosaic ws d = rate_mosaic ratew $
rect_mosaic origRect d $
zipML (example_mosaic ws) (map findarea ws)
-}
mc_mosaic :: [NamedWindow] -> CutDirection
-> Rated Double (Mosaic (NamedWindow,Rectangle))
mc_mosaic ws d = fmap (rect_mosaic origRect d) $
annealMax (zipML (example_mosaic ws) (map findarea ws))
(the_rating . rate_mosaic ratew . rect_mosaic origRect d )
changeMosaic
ratew :: (NamedWindow,Rectangle) -> Double
ratew (w,r) = rate f meanarea (findlist w hints) r
example_mosaic :: [NamedWindow] -> Mosaic NamedWindow
example_mosaic ws = M (map OM ws)
rect_mosaic :: Rectangle -> CutDirection -> Mosaic (a,Double) -> Mosaic (a,Rectangle)
rect_mosaic r _ (OM (w,_)) = OM (w,r)
rect_mosaic r d (M ws) = M $ zipWith (\w' r' -> rect_mosaic r' d' w') ws rs
where areas = map (sum . map snd . flattenMosaic) ws
rs = partitionR d r areas
d' = otherDirection d
rate_mosaic :: ((NamedWindow,Rectangle) -> Double)
-> Mosaic (NamedWindow,Rectangle) -> Rated Double (Mosaic (NamedWindow,Rectangle))
rate_mosaic r m = catRatedM $ fmap (\x -> Rated (r x) x) m
{-
one_split :: Rectangle -> CutDirection -> [[NamedWindow]]
-> State CountDown (Rated Double (Mosaic (NamedWindow, Rectangle)))
one_split r d [ws] = one_split r d $ map (:[]) ws
one_split r d wss =
do rnd <- mapM (const (fractional resolutionNumber)) [1..length wss]
let wsr_s :: [([NamedWindow], Rectangle)]
wsr_s = zip wss (partitionR d r rnd)
submosaics <- mapM (\(ws',r') ->
mosaic_splits even_split r' (otherDirection d) ws') wsr_s
return $ fmap M $ catRated submosaics
-}
partitionR :: CutDirection -> Rectangle -> [Double] -> [Rectangle]
partitionR _ _ [] = []
partitionR _ r [_] = [r]
partitionR d r (a:ars) = r1 : partitionR d r2 ars
where totarea = sum (a:ars)
(r1,r2) = split d (a/totarea) r
theareas = hints2area `fmap` hints
sumareas ws = sum $ map findarea ws
findarea :: NamedWindow -> Double
findarea w = M.findWithDefault 1 w theareas
meanarea = area origRect / fromIntegral (length origws)
maxL :: Ord a => [a] -> a
maxL [] = error "maxL on empty list"
maxL [a] = a
maxL (a:b:c) = maxL (max a b:c)
catRated :: Floating v => [Rated v a] -> Rated v [a]
catRated xs = Rated (product $ map the_rating xs) (map the_value xs)
catRatedM :: Floating v => Mosaic (Rated v a) -> Rated v (Mosaic a)
catRatedM (OM (Rated v x)) = Rated v (OM x)
catRatedM (M xs) = case catRated $ map catRatedM xs of Rated v xs' -> Rated v (M xs')
data CountDown = CD !StdGen !Int
tries_left :: State CountDown Int
tries_left = do CD _ n <- get
return (max 0 n)
mapCD :: (a -> State CountDown b) -> [a] -> State CountDown [b]
mapCD f xs = do n <- tries_left
let len = length xs
mapM (run_with_only ((n `div` len)+1) . f) $ take (n+1) xs
run_with_only :: Int -> State CountDown a -> State CountDown a
run_with_only limit j =
do CD g n <- get
let leftover = n - limit
if leftover < 0 then j
else do put $ CD g limit
x <- j
CD g' n' <- get
put $ CD g' (leftover + n')
return x
data WindowHint = RelArea Double
| AspectRatio Double
| FlexibleAspectRatio Double
deriving ( Show, Read, Eq, Ord )
fixedAspect :: [WindowHint] -> Bool
fixedAspect [] = False
fixedAspect (AspectRatio _:_) = True
fixedAspect (_:x) = fixedAspect x
rate :: Double -> Double -> [WindowHint] -> Rectangle -> Double
rate defaulta meanarea xs rr
| fixedAspect xs = (area (crop xs rr) / meanarea) ** weight
| otherwise = (area rr / meanarea)**(weight-flexibility)
* (area (crop (xs++[FlexibleAspectRatio defaulta]) rr) / meanarea)**flexibility
where weight = hints2area xs
crop :: [WindowHint] -> Rectangle -> Rectangle
crop (AspectRatio f:_) = cropit f
crop (FlexibleAspectRatio f:_) = cropit f
crop (_:hs) = crop hs
crop [] = id
crop' :: [WindowHint] -> Rectangle -> Rectangle
crop' (AspectRatio f:_) = cropit f
crop' (_:hs) = crop' hs
crop' [] = id
cropit :: Double -> Rectangle -> Rectangle
cropit f (Rectangle a b w h) | w -/- h > f = Rectangle a b (ceiling $ h -* f) h
| otherwise = Rectangle a b w (ceiling $ w -/ f)
hints2area :: [WindowHint] -> Double
hints2area [] = defaultArea
hints2area (RelArea r:_) = r
hints2area (_:x) = hints2area x
area :: Rectangle -> Double
area (Rectangle _ _ w h) = fromIntegral w * fromIntegral h
(-/-) :: (Integral a, Integral b) => a -> b -> Double
a -/- b = fromIntegral a / fromIntegral b
(-/) :: (Integral a) => a -> Double -> Double
a -/ b = fromIntegral a / b
(-*) :: (Integral a) => a -> Double -> Double
a -* b = fromIntegral a * b
split :: CutDirection -> Double -> Rectangle -> (Rectangle, Rectangle)
split Vertical frac (Rectangle sx sy sw sh) = (Rectangle sx sy sw h,
Rectangle sx (sy+fromIntegral h) sw (sh-h))
where h = floor $ fromIntegral sh * frac
split Horizontal frac (Rectangle sx sy sw sh) = (Rectangle sx sy w sh,
Rectangle (sx+fromIntegral w) sy (sw-w) sh)
where w = floor $ fromIntegral sw * frac
data CutDirection = Vertical | Horizontal
otherDirection :: CutDirection -> CutDirection
otherDirection Vertical = Horizontal
otherDirection Horizontal = Vertical
data Mosaic a = M [Mosaic a] | OM a
deriving ( Show )
instance Functor Mosaic where
fmap f (OM x) = OM (f x)
fmap f (M xs) = M (map (fmap f) xs)
zipMLwith :: (a -> b -> c) -> Mosaic a -> [b] -> Mosaic c
zipMLwith f (OM x) (y:_) = OM (f x y)
zipMLwith _ (OM _) [] = error "bad zipMLwith"
zipMLwith f (M xxs) yys = makeM $ foo xxs yys
where foo (x:xs) ys = zipMLwith f x (take (lengthM x) ys) :
foo xs (drop (lengthM x) ys)
foo [] _ = []
zipML :: Mosaic a -> [b] -> Mosaic (a,b)
zipML = zipMLwith (\a b -> (a,b))
lengthM :: Mosaic a -> Int
lengthM (OM _) = 1
lengthM (M x) = sum $ map lengthM x
changeMosaic :: Mosaic a -> [Mosaic a]
changeMosaic (OM _) = []
changeMosaic (M xs) = map makeM (concatenations xs) ++
map makeM (splits xs) ++
map M (tryAll changeMosaic xs)
tryAll :: (a -> [a]) -> [a] -> [[a]]
tryAll _ [] = []
tryAll f (x:xs) = map (:xs) (f x) ++ map (x:) (tryAll f xs)
splits :: [Mosaic a] -> [[Mosaic a]]
splits [] = []
splits (OM x:y) = map (OM x:) $ splits y
splits (M (x:y):z) = (x:makeM y:z) : map (makeM (x:y) :) (splits z)
splits (M []:x) = splits x
concatenations :: [Mosaic a] -> [[Mosaic a]]
concatenations (x:y:z) = (concatenateMosaic x y:z):(map (x:) $ concatenations (y:z))
concatenations _ = []
concatenateMosaic :: Mosaic a -> Mosaic a -> Mosaic a
concatenateMosaic (OM a) (OM b) = M [OM a, OM b]
concatenateMosaic (OM a) (M b) = M (OM a:b)
concatenateMosaic (M a) (OM b) = M (a++[OM b])
concatenateMosaic (M a) (M b) = M (a++b)
makeM :: [Mosaic a] -> Mosaic a
makeM [m] = m
makeM [] = error "makeM []"
makeM ms = M ms
flattenMosaic :: Mosaic a -> [a]
flattenMosaic (OM a) = [a]
flattenMosaic (M xs) = concatMap flattenMosaic xs
allsplits :: [a] -> [[[a]]]
allsplits [] = [[[]]]
allsplits [a] = [[[a]]]
allsplits (x:xs) = (map ([x]:) splitsrest) ++ (map (maphead (x:)) splitsrest)
where splitsrest = allsplits' xs
allsplits' :: [a] -> [[[a]]]
allsplits' [] = [[[]]]
allsplits' [a] = [[[a]]]
allsplits' (x:xs) = (map (maphead (x:)) splitsrest) ++ (map ([x]:) splitsrest)
where splitsrest = allsplits xs
maphead :: (a->a) -> [a] -> [a]
maphead f (x:xs) = f x : xs
maphead _ [] = []
runCountDown :: Int -> State CountDown a -> a
runCountDown n x = fst $ runState x (CD (mkStdGen n) n)
|