Add SimpleFloat a very basic floating layout that will place windows according to their size hints

XMonad/Layout/Decoration.hs

@@ -22,7 +22,7 @@ module XMonad.Layout.Decoration
     , DecorationStyle (..)
     , DeConfig (..), defaultDeConfig, mkDefaultDeConfig
     , shrinkText, CustomShrink ( CustomShrink )
-    , Shrinker (..)
+    , Shrinker (..), DefaultShrinker
     , module XMonad.Layout.LayoutModifier
     , fi
     ) where
@@ -32,17 +32,14 @@ import Data.List
 
 import XMonad
 import qualified XMonad.StackSet as W
-
+import XMonad.Hooks.UrgencyHook
 import XMonad.Layout.LayoutModifier
 import XMonad.Layout.WindowArranger
-
 import XMonad.Util.NamedWindows
 import XMonad.Util.Invisible
 import XMonad.Util.XUtils
 import XMonad.Util.Font
 
-import XMonad.Hooks.UrgencyHook
-
 -- $usage
 -- For usage examples you can see "XMonad.Layout.SimpleDecoration",
 -- "XMonad.Layout.Tabbed", "XMonad.Layout.DwmStyle",

XMonad/Layout/SimpleFloat.hs

@@ -0,0 +1,76 @@
+{-# LANGUAGE TypeSynonymInstances, MultiParamTypeClasses #-}
+-----------------------------------------------------------------------------
+-- |
+-- Module      :  XMonad.Layout.SimpleFloat
+-- Copyright   :  (c) 2007 Andrea Rossato
+-- License     :  BSD-style (see xmonad/LICENSE)
+--
+-- Maintainer  :  andrea.rossato@unibz.it
+-- Stability   :  unstable
+-- Portability :  unportable
+--
+-- A very simple layout. The simplest, afaik.
+-----------------------------------------------------------------------------
+
+module XMonad.Layout.SimpleFloat
+    ( -- * Usage:
+      -- $usage
+      simpleFloat
+    , simpleFloat'
+    , SimpleDecoration (..), defaultSFConfig
+    , shrinkText, CustomShrink(CustomShrink)
+    , Shrinker(..)
+    ) where
+
+import XMonad
+import qualified XMonad.StackSet as S
+import XMonad.Layout.Decoration
+import XMonad.Layout.SimpleDecoration
+import XMonad.Layout.WindowArranger
+
+-- $usage
+-- You can use this module with the following in your
+-- @~\/.xmonad\/xmonad.hs@:
+--
+-- > import XMonad.Layout.SimpleFloat
+--
+-- Then edit your @layoutHook@ by adding the SimpleFloat layout:
+--
+-- > myLayouts = simpleFloat ||| Full ||| etc..
+-- > main = xmonad defaultConfig { layoutHook = myLayouts }
+--
+-- For more detailed instructions on editing the layoutHook see:
+--
+-- "XMonad.Doc.Extending#Editing_the_layout_hook"
+
+-- | FIXME
+simpleFloat :: ModifiedLayout (Decoration SimpleDecoration DefaultShrinker)
+	       (ModifiedLayout WindowArranger SimpleFloat) a
+simpleFloat = decoration shrinkText defaultSFConfig (windowArranger $ SF 20)
+
+-- | FIXME
+simpleFloat' :: Shrinker s => s -> DeConfig SimpleDecoration a -> 
+               ModifiedLayout (Decoration SimpleDecoration s)
+	      (ModifiedLayout WindowArranger SimpleFloat) a
+simpleFloat' s c = decoration s c (windowArranger $ SF (decoHeight c))
+
+defaultSFConfig :: DeConfig SimpleDecoration a
+defaultSFConfig = mkDefaultDeConfig $ Simple False
+
+data SimpleFloat a = SF Dimension deriving (Show, Read)
+instance LayoutClass SimpleFloat Window where
+    doLayout (SF i) sc (S.Stack w l r) = do wrs <- mapM (getSize i sc) (w : reverse l ++ r)
+                                            return (wrs, Nothing)
+    description _ = "SimpleFloat"
+
+getSize :: Dimension -> Rectangle -> Window -> X (Window,Rectangle)
+getSize i (Rectangle rx ry _ _) w = do
+  d  <- asks display
+  bw <- asks (borderWidth . config)
+  wa <- io $ getWindowAttributes d w
+  let ny = ry + fi i
+      x  =  max rx $ fi $ wa_x      wa
+      y  =  max ny $ fi $ wa_y      wa
+      wh = (fi $ wa_width  wa) + (bw * 2)
+      ht = (fi $ wa_height wa) + (bw * 2)
+  return (w, Rectangle x y wh ht)

xmonad-contrib.cabal

@@ -120,6 +120,7 @@ library
                         XMonad.Layout.Roledex
                         XMonad.Layout.Simplest
                         XMonad.Layout.SimpleDecoration
+                        XMonad.Layout.SimpleFloat
                         XMonad.Layout.Spiral
                         XMonad.Layout.Square
                         XMonad.Layout.ShowWName