blob: d70f49f51ed2a00a11a08d2fe1436dfa2727cbd1 (
plain) (
blame)
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
|
-- A layout that splits the screen horizontally and shows two windows. The
-- left window is always the master window, and the right is either the
-- currently focused window or the second window in layout order.
--
-- To use this layout, 'import XMonadContrib.TwoPane' and add
-- 'twoPane defaultDelta (1%2)' to the list of layouts
module XMonadContrib.TwoPane where
import XMonad
import Operations
import qualified StackSet as W
import Control.Monad.State (gets)
twoPane :: Rational -> Rational -> Layout
twoPane delta split = Layout { doLayout = arrange, modifyLayout = message }
where
arrange rect ws@(w:x:_) = do
(Just f) <- gets (W.peek . windowset) -- safe because of pattern match above
let y = if f == w then x else f
(left, right) = splitHorizontallyBy split rect
mapM_ hide . filter (\a -> a /= w && a /= y) $ ws
return [(w, left), (y, right)]
-- there are one or zero windows
arrange rect ws = return . map (\w -> (w, rect)) $ ws
message x = case fromMessage x of
Just Shrink -> Just (twoPane delta (split - delta))
Just Expand -> Just (twoPane delta (split + delta))
_ -> Nothing
|
