From f54eb78c74573c9b8499032eeb8334e354fdfe0c Mon Sep 17 00:00:00 2001
From: Anders Engstrom <ankaan@gmail.com>
Date: Sat, 11 Apr 2009 13:36:36 +0200
Subject: X.L.ThreeColumnsMiddle merged into X.L.ThreeColumns with some new
 features

Ignore-this: 1d5bb8de98f8ade3780444ed99f5a12f

darcs-hash:20090411113636-8978f-e970950394e38cbd72d8ada44c62cac0934234d7.gz
---
 XMonad/Layout/ThreeColumnsMiddle.hs | 92 -------------------------------------
 1 file changed, 92 deletions(-)
 delete mode 100644 XMonad/Layout/ThreeColumnsMiddle.hs

(limited to 'XMonad/Layout/ThreeColumnsMiddle.hs')

diff --git a/XMonad/Layout/ThreeColumnsMiddle.hs b/XMonad/Layout/ThreeColumnsMiddle.hs
deleted file mode 100644
index cc73e08..0000000
--- a/XMonad/Layout/ThreeColumnsMiddle.hs
+++ /dev/null
@@ -1,92 +0,0 @@
-{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses #-}
-
------------------------------------------------------------------------------
--- |
--- Module      :  XMonad.Layout.ThreeColumnsMiddle
--- Copyright   :  (c) Carsten Otto <xmonad@c-otto.de>,
---                based on ThreeColumns (c) Kai Grossjohann <kai@emptydomain.de>
--- License     :  BSD3-style (see LICENSE)
--- 
--- Maintainer  :  ?
--- Stability   :  unstable
--- Portability :  unportable
---
--- A layout similar to tall but with three columns, where the main window is
--- in the middle. 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
---
------------------------------------------------------------------------------
-
-module XMonad.Layout.ThreeColumnsMiddle (
-                              -- * Usage
-                              -- $usage
-                              ThreeColMid(..)
-                             ) where
-
-import XMonad
-import qualified XMonad.StackSet as W
-
-import Data.Ratio
-
-import Control.Monad
-
--- $usage
--- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:
---
--- > import XMonad.Layout.ThreeColumnsMiddle
---
--- Then edit your @layoutHook@ by adding the ThreeColMid layout:
---
--- > myLayouts = ThreeColMid 1 (3/100) (1/2) ||| etc..
--- > main = xmonad defaultConfig { layoutHook = myLayouts }
---
--- The first argument specifies how many windows appear in the main window.
--- The second argument specifies how much the main window size changes when resizing.
--- The third argument specifies the initial size of the main window as a fraction of
--- total screen size.
---
--- For more detailed instructions on editing the layoutHook see:
---
--- "XMonad.Doc.Extending#Editing_the_layout_hook"
-
-data ThreeColMid a = ThreeColMid !Int !Rational !Rational deriving (Show,Read)
-
-instance LayoutClass ThreeColMid a where
-    doLayout (ThreeColMid nmaster _ frac) r =
-        return . (\x->(x,Nothing)) .
-        ap zip (tile3 frac r nmaster . length) . W.integrate
-    handleMessage (ThreeColMid nmaster delta frac) m =
-        return $ msum [fmap resize     (fromMessage m)
-                      ,fmap incmastern (fromMessage m)]
-            where resize Shrink = ThreeColMid nmaster delta (max 0 $ frac-delta)
-                  resize Expand = ThreeColMid nmaster delta (min 1 $ frac+delta)
-                  incmastern (IncMasterN d) = ThreeColMid (max 0 (nmaster+d)) delta frac
-    description _ = "ThreeColMid"
-
--- | tile3.  Compute window positions using 3 panes
-tile3 :: Rational -> Rectangle -> Int -> Int -> [Rectangle]
-tile3 f r nmaster n 
--- split horizontally, if there are very few windows (only the main screen is used)
-    | n <= nmaster || nmaster == 0 = splitHorizontally n r
-
--- one window more than the master window can hold (the additional window is shown right of the main screen)
-    | n == nmaster+1 = splitVertically nmaster s1 ++ splitVertically (n-nmaster) s2
-
--- many windows (the main windows are shown in the center, all other windows are shown left and right of it)
-    | otherwise = splitVertically nmaster r1 ++ splitVertically nleft r2 ++ splitVertically nright r3
-  where (r1, r2, r3) = split3HorizontallyBy f r
-        (s1, s2) = splitHorizontallyBy f r
-        nslave = (n - nmaster)
-        nleft = ceiling (nslave % 2)
-        nright = (n - nmaster - nleft)
-
-split3HorizontallyBy :: Rational -> Rectangle -> (Rectangle, Rectangle, Rectangle)
-split3HorizontallyBy f (Rectangle sx sy sw sh) =
-    ( Rectangle (sx + fromIntegral leftw) sy midw sh
-    , Rectangle sx sy leftw sh
-    , Rectangle (sx + fromIntegral leftw + fromIntegral midw) sy rightw sh )
-  where midw = ceiling $ fromIntegral sw * f
-        leftw = ceiling ( (sw - midw) % 2 )
-        rightw = sw - leftw - midw
-- 
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