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|
{-# LANGUAGE DeriveDataTypeable, FlexibleInstances, GeneralizedNewtypeDeriving, MultiParamTypeClasses #-}
-----------------------------------------------------------------------------
-- |
-- Module : XMonad.Layout.StackTile
-- Copyright : (c) Rickard Gustafsson <acura@allyourbase.se>
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Rickard Gustafsson <acura@allyourbase.se>
-- Stability : unstable
-- Portability : unportable
--
-- A stacking layout, like dishes but with the ability to resize master pane.
-- Mostly useful on small screens.
--
-----------------------------------------------------------------------------
module XMonad.Layout.StackTile (
-- * Usage
-- $usage
StackTile(..)
) where
import XMonad hiding (tile)
import qualified XMonad.StackSet as W
import Control.Monad
-- $usage
-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:
--
-- > import XMonad.Layout.StackTile
--
-- Then edit your @layoutHook@ by adding the StackTile layout:
--
-- > myLayout = StackTile 1 (3/100) (1/2) ||| etc..
-- > main = xmonad def { layoutHook = myLayout }
--
-- For more detailed instructions on editing the layoutHook see:
--
-- "XMonad.Doc.Extending#Editing_the_layout_hook"
--
data StackTile a = StackTile !Int !Rational !Rational deriving (Show, Read)
instance LayoutClass StackTile a where
pureLayout (StackTile nmaster _ frac) r s = zip ws rs
where ws = W.integrate s
rs = tile frac r nmaster (length ws)
pureMessage (StackTile nmaster delta frac) m =
msum [fmap resize (fromMessage m)
,fmap incmastern (fromMessage m)]
where resize Shrink = StackTile nmaster delta (max 0 $ frac-delta)
resize Expand = StackTile nmaster delta (min 1 $ frac+delta)
incmastern (IncMasterN d) = StackTile (max 0 (nmaster+d)) delta frac
description _ = "StackTile"
tile :: Rational -> Rectangle -> Int -> Int -> [Rectangle]
tile f r nmaster n = if n <= nmaster || nmaster == 0
then splitHorizontally n r
else splitHorizontally nmaster r1 ++ splitVertically (n-nmaster) r2 -- two columns
where (r1,r2) = splitVerticallyBy f r
|
