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X.L.ThreeColumnsMiddle merged into X.L.ThreeColumns with some new features

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This commit is contained in:
Anders Engstrom
2009-04-11 11:36:36 +00:00
parent 561855133c
commit 71139c1fb3
3 changed files with 42 additions and 118 deletions
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67
XMonad/Layout/ThreeColumns.hs
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@@ -10,7 +10,11 @@
-- Stability : unstable
-- Portability : unportable
--
-- A layout similar to tall but with three columns.
-- A layout similar to tall but with three columns. With 2560x1600 pixels this
-- layout can be used for a huge main window and up to six reasonable sized
-- slave windows.
--
-- Screenshot: <http://server.c-otto.de/xmonad/ThreeColumnsMiddle.png>
--
-----------------------------------------------------------------------------
@@ -34,44 +38,57 @@ import Control.Monad
--
-- Then edit your @layoutHook@ by adding the ThreeCol layout:
--
-- > myLayouts = ThreeCol 1 (3/100) (1/2) ||| etc..
-- > myLayouts = ThreeCol False 1 (3/100) (1/2) ||| etc..
-- > main = xmonad defaultConfig { layoutHook = myLayouts }
--
-- If the first argument is true, the main window is placed in the center
-- column. The second argument specifies hom many windows initially appear in
-- the main window. The third argument argument specifies the amount to resize
-- while resizing and the fourth argument specifies the initial size of the
-- columns. A positive size designates the fraction of the screen that the main
-- window should occupy, but if the size is negative the absolute value
-- designates the fraction a slave column should occupy. If both slave columns
-- are visible, they always occupy the same amount of space.
--
-- For more detailed instructions on editing the layoutHook see:
--
-- "XMonad.Doc.Extending#Editing_the_layout_hook"
data ThreeCol a = ThreeCol !Int !Rational !Rational deriving (Show,Read)
data ThreeCol a = ThreeCol !Bool !Int !Rational !Rational deriving (Show,Read)
instance LayoutClass ThreeCol a where
doLayout (ThreeCol nmaster _ frac) r =
doLayout (ThreeCol middle nmaster _ frac) r =
return . (\x->(x,Nothing)) .
ap zip (tile3 frac r nmaster . length) . W.integrate
handleMessage (ThreeCol nmaster delta frac) m =
ap zip (tile3 middle frac r nmaster . length) . W.integrate
handleMessage (ThreeCol middle nmaster delta frac) m =
return $ msum [fmap resize (fromMessage m)
,fmap incmastern (fromMessage m)]
where resize Shrink = ThreeCol nmaster delta (max 0 $ frac-delta)
resize Expand = ThreeCol nmaster delta (min 1 $ frac+delta)
incmastern (IncMasterN d) = ThreeCol (max 0 (nmaster+d)) delta frac
where resize Shrink = ThreeCol middle nmaster delta (max (-0.5) $ frac-delta)
resize Expand = ThreeCol middle nmaster delta (min 1 $ frac+delta)
incmastern (IncMasterN d) = ThreeCol middle (max 0 (nmaster+d)) delta frac
description _ = "ThreeCol"
-- | tile3. Compute window positions using 3 panes
tile3 :: Rational -> Rectangle -> Int -> Int -> [Rectangle]
tile3 f r nmaster n
tile3 :: Bool -> Rational -> Rectangle -> Int -> Int -> [Rectangle]
tile3 middle f r nmaster n
| n <= nmaster || nmaster == 0 = splitVertically n r
| n <= nmaster+1 = splitVertically nmaster s1 ++ splitVertically (n-nmaster) s2
| otherwise = splitVertically nmaster r1 ++ splitVertically nmid r2 ++ splitVertically nright r3
where (r1, r2, r3) = split3HorizontallyBy f r
(s1, s2) = splitHorizontallyBy f r
nslave = (n - nmaster)
nmid = ceiling (nslave % 2)
nright = (n - nmaster - nmid)
| otherwise = splitVertically nmaster r1 ++ splitVertically nslave1 r2 ++ splitVertically nslave2 r3
where (r1, r2, r3) = split3HorizontallyBy middle (if f<0 then 1+2*f else f) r
(s1, s2) = splitHorizontallyBy (if f<0 then 1+f else f) r
nslave = (n - nmaster)
nslave1 = ceiling (nslave % 2)
nslave2 = (n - nmaster - nslave1)
split3HorizontallyBy :: Rational -> Rectangle -> (Rectangle, Rectangle, Rectangle)
split3HorizontallyBy f (Rectangle sx sy sw sh) =
( Rectangle sx sy leftw sh
, Rectangle (sx + fromIntegral leftw) sy midw sh
, Rectangle (sx + fromIntegral leftw + fromIntegral midw) sy rightw sh )
where leftw = ceiling $ fromIntegral sw * (2/3) * f
midw = ceiling ( (sw - leftw) % 2 )
rightw = sw - leftw - midw
split3HorizontallyBy :: Bool -> Rational -> Rectangle -> (Rectangle, Rectangle, Rectangle)
split3HorizontallyBy middle f (Rectangle sx sy sw sh) =
if middle
then ( Rectangle (sx + fromIntegral r2w) sy r1w sh
, Rectangle sx sy r2w sh
, Rectangle (sx + fromIntegral r2w + fromIntegral r1w) sy r3w sh )
else ( Rectangle sx sy r1w sh
, Rectangle (sx + fromIntegral r1w) sy r2w sh
, Rectangle (sx + fromIntegral r1w + fromIntegral r2w) sy r3w sh )
where r1w = ceiling $ fromIntegral sw * f
r2w = ceiling ( (sw - r1w) % 2 )
r3w = sw - r1w - r2w