From 4866f2e367dfcf22a9591231ba40948826a1b438 Mon Sep 17 00:00:00 2001
From: Spencer Janssen <sjanssen@cse.unl.edu>
Date: Thu, 1 Nov 2007 21:10:59 +0100
Subject: Hierarchify

darcs-hash:20071101201059-a5988-fc1f1262bec1b69e13ba18ae7cefeafc8c4471d4.gz
---
 XMonad/Layout/Roledex.hs | 70 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 XMonad/Layout/Roledex.hs

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

diff --git a/XMonad/Layout/Roledex.hs b/XMonad/Layout/Roledex.hs
new file mode 100644
index 0000000..0c4eb5f
--- /dev/null
+++ b/XMonad/Layout/Roledex.hs
@@ -0,0 +1,70 @@
+{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses, TypeSynonymInstances #-}
+
+-----------------------------------------------------------------------------
+-- |
+-- Module      :  XMonad.Layout.Roledex
+-- Copyright   :  (c) tim.thelion@gmail.com
+-- License     :  BSD
+--
+-- Maintainer  :  tim.thelion@gmail.com
+-- Stability   :  unstable
+-- Portability :  unportable
+--
+-- Screenshot  :  <http://www.timthelion.com/rolodex.png>
+--
+-- This is a completely pointless layout which acts like Microsoft's Flip 3D
+-----------------------------------------------------------------------------
+
+module XMonad.Layout.Roledex (
+    -- * Usage
+    -- $usage
+    Roledex(Roledex)) where
+
+import XMonad
+import XMonad.Layouts
+import qualified XMonad.StackSet as W
+import Graphics.X11.Xlib
+import Data.Ratio
+
+-- $usage
+--
+-- > import XMonad.Layout.Roledex 
+-- > layouts = [ Layout Roledex ]
+
+-- %import XMonad.Layout.Roledex
+-- %layout , Layout Roledex
+
+data Roledex a = Roledex deriving ( Show, Read )
+
+instance LayoutClass Roledex Window where
+    doLayout _ = roledexLayout
+
+roledexLayout :: Eq a => Rectangle -> W.Stack a -> X ([(a, Rectangle)], Maybe (Roledex 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 :: Ratio Int) $ fst (splitVerticallyBy (2%3 :: Ratio Int) 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' :: Integral a => a -> a -> a
+div' _ 0 = 0
+div' n o = div n o
-- 
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