rolodex

Cascading windows...

Roledex.hs

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+-----------------------------------------------------------------------------
+-- |
+-- Module      :  XMonadContrib.Roledex
+-- Copyright   :  (c) tim.thelion@gmail.com
+-- License     :  BSD Because this is dirived from Accordian which is licenced that way. 
+-- The maintainer of Accordian is glasser@mit.edu
+--
+-- Maintainer  :  tim.thelion@gmail.com
+-- Stability   :  unstable
+-- Portability :  unportable
+--
+-- Screenshot  :  www.timthelion.com/rolodex.png
+-- This is a compleatly pointless layout which acts like Microsoft's Flip 3D
+-----------------------------------------------------------------------------
+
+module XMonadContrib.Roledex (
+    -- * Usage
+    -- $usage
+    roledex) where
+
+import XMonad
+import Operations
+import qualified StackSet as W
+import Graphics.X11.Xlib
+import Data.Ratio
+import XMonadContrib.LayoutHelpers ( idModify )
+
+-- $usage
+-- > import XMonadContrib.Roledex 
+-- > defaultLayouts = [ roledex ]
+
+roledex :: Eq a => Layout a
+roledex = Layout { doLayout = roledexLayout, modifyLayout = idModify }
+
+roledexLayout :: Eq a => Rectangle -> W.Stack a -> X ([(a, Rectangle)], Maybe (Layout a))
+roledexLayout sc ws = return ([(W.focus ws, mainPane)] ++
+                              (zip ups tops) ++
+                              (reverse (zip dns bottoms))
+                               ,Nothing)
+ where ups    = W.up ws
+       dns    = W.down ws
+       c = length ups + length dns
+       rect = fst $ splitHorizontallyBy (2% 3) $ fst (splitVerticallyBy (2% 3) sc) 
+       gw = div' (w - rw) (fromIntegral c) 
+            where
+            (Rectangle _ _ w _) = sc
+            (Rectangle _ _ rw _) = rect
+       gh = div' (h - rh) (fromIntegral c)
+            where
+            (Rectangle _ _ _ h) = sc
+            (Rectangle _ _ _ rh) = rect
+       mainPane = mrect (gw * fromIntegral c) (gh * fromIntegral c) rect 
+       mrect  mx my (Rectangle x y w h) = Rectangle (x + (fromIntegral mx)) (y + (fromIntegral my)) w h
+       tops    = map f $ cd c (length dns)
+       bottoms = map f $ [0..(length dns)]
+       f n = mrect (gw * (fromIntegral n)) (gh * (fromIntegral n)) rect
+       cd n m = if n > m 
+                then (n - 1) : (cd (n-1) m)
+                else []
+
+div' _ 0 = 0
+div' n o = div n o