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|
{-# LANGUAGE FlexibleInstances, MultiParamTypeClasses, PatternGuards #-}
-----------------------------------------------------------------------------
-- |
-- Module : XMonad.Layout.ResizeScreen
-- Copyright : (c) 2007 Andrea Rossato
-- License : BSD-style (see xmonad/LICENSE)
--
-- Maintainer : andrea.rossato@unibz.it
-- Stability : unstable
-- Portability : unportable
--
-- A layout transformer to have a layout respect a given screen
-- geometry
-----------------------------------------------------------------------------
module XMonad.Layout.ResizeScreen
( -- * Usage:
-- $usage
resizeHorizontal
, resizeVertical
, withNewRectangle
, ResizeScreen (..)
) where
import Control.Arrow (second)
import Control.Applicative ((<$>))
import XMonad
import XMonad.Util.XUtils (fi)
-- $usage
-- You can use this module by importing it into your
-- @~\/.xmonad\/xmonad.hs@ file:
--
-- > import XMonad.Layout.ResizeScreen
--
-- and modifying your layoutHook as follows (for example):
--
-- > layoutHook = resizeHorizontal 40 Full
--
-- For more detailed instructions on editing the layoutHook see:
--
-- "XMonad.Doc.Extending#Editing_the_layout_hook"
resizeHorizontal :: Int -> l a -> ResizeScreen l a
resizeHorizontal = ResizeScreen H
resizeVertical :: Int -> l a -> ResizeScreen l a
resizeVertical = ResizeScreen V
withNewRectangle :: Rectangle -> l a -> ResizeScreen l a
withNewRectangle = WithNewScreen
data ResizeScreen l a = ResizeScreen ResizeMode Int (l a)
| WithNewScreen Rectangle (l a)
deriving (Read, Show)
data ResizeMode = H | V deriving (Read, Show)
instance (LayoutClass l a) => LayoutClass (ResizeScreen l) a where
doLayout m (Rectangle x y w h ) s
| ResizeScreen H i l <- m = resize (ResizeScreen V i) l (Rectangle (x + fi i) y (w - fi i) h)
| ResizeScreen V i l <- m = resize (ResizeScreen H i) l (Rectangle x (y + fi i) w (h - fi i))
| WithNewScreen r l <- m = resize (WithNewScreen r) l r
| otherwise = return ([],Nothing)
where resize t l' nr = second (fmap t) <$> doLayout l' nr s
handleMessage rs m
| ResizeScreen t i l <- rs = go (ResizeScreen t i) l
| WithNewScreen r l <- rs = go (WithNewScreen r) l
| otherwise = return Nothing
where go tp lay = do ml' <- handleMessage lay m
return (tp `fmap` ml')
emptyLayout rs re
| ResizeScreen t i l <- rs = go (ResizeScreen t i) l
| WithNewScreen r l <- rs = go (WithNewScreen r) l
| otherwise = return ([],Nothing)
where go tp lay = do (wrs,ml) <- emptyLayout lay re
return (wrs, tp `fmap` ml)
description _ = []
|
