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|
{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses #-}
-----------------------------------------------------------------------------
-- |
-- Module : XMonad.Layout.Spacing
-- Copyright : (c) Brent Yorgey
-- License : BSD-style (see LICENSE)
--
-- Maintainer : <byorgey@gmail.com>
-- Stability : unstable
-- Portability : portable
--
-- Add a configurable amount of space around windows.
-----------------------------------------------------------------------------
module XMonad.Layout.Spacing (
-- * Usage
-- $usage
spacing
) where
import Graphics.X11 (Rectangle(..))
import Control.Arrow (second)
import XMonad.Util.Font (fi)
import XMonad.Layout.LayoutModifier
-- $usage
-- You can use this module by importing it into your @~\/.xmonad\/xmonad.hs@ file:
--
-- > import XMonad.Layout.Spacing
--
-- and modifying your layoutHook as follows (for example):
--
-- > layoutHook = spacing 2 $ Tall 1 (3/100) (1/2)
-- > -- put a 2px space around every window
--
-- | Surround all windows by a certain number of pixels of blank space.
spacing :: Int -> l a -> ModifiedLayout Spacing l a
spacing p = ModifiedLayout (Spacing p)
data Spacing a = Spacing Int deriving (Show, Read)
instance LayoutModifier Spacing a where
pureModifier (Spacing p) _ _ wrs = (map (second $ shrinkRect p) wrs, Nothing)
modifierDescription (Spacing p) = "Spacing " ++ show p
shrinkRect :: Int -> Rectangle -> Rectangle
shrinkRect p (Rectangle x y w h) = Rectangle (x+fi p) (y+fi p) (w-2*fi p) (h-2*fi p)
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