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{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses, TypeSynonymInstances #-}
-----------------------------------------------------------------------------
-- |
-- Module : XMonad.Layout.LayoutHints
-- Copyright : (c) David Roundy <droundy@darcs.net>
-- License : BSD
--
-- Maintainer : David Roundy <droundy@darcs.net>
-- Stability : unstable
-- Portability : portable
--
-- Make layouts respect size hints.
-----------------------------------------------------------------------------
module XMonad.Layout.LayoutHints (
-- * usage
-- $usage
layoutHints,
LayoutHints) where
import XMonad.Operations ( applySizeHints, D )
import Graphics.X11.Xlib
import Graphics.X11.Xlib.Extras ( getWMNormalHints )
import {-#SOURCE#-} Config (borderWidth)
import XMonad hiding ( trace )
import XMonad.Layout.LayoutModifier
-- $usage
-- > import XMonad.Layout.LayoutHints
-- > layouts = [ layoutHints tiled , layoutHints $ Mirror tiled ]
-- %import XMonad.Layout.LayoutHints
-- %layout , layoutHints $ tiled
-- %layout , layoutHints $ Mirror tiled
layoutHints :: (LayoutClass l a) => l a -> ModifiedLayout LayoutHints l a
layoutHints = ModifiedLayout LayoutHints
-- | Expand a size by the given multiple of the border width. The
-- multiple is most commonly 1 or -1.
adjBorders :: Dimension -> D -> D
adjBorders mult (w,h) = (w+2*mult*borderWidth, h+2*mult*borderWidth)
data LayoutHints a = LayoutHints deriving (Read, Show)
instance LayoutModifier LayoutHints Window where
modifierDescription _ = "Hinted"
redoLayout _ _ _ xs = do
xs' <- mapM applyHint xs
return (xs', Nothing)
where
applyHint (w,Rectangle a b c d) =
withDisplay $ \disp -> do
sh <- io $ getWMNormalHints disp w
let (c',d') = adjBorders 1 . applySizeHints sh . adjBorders (-1) $ (c,d)
return (w, Rectangle a b c' d')
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