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|
{-# OPTIONS_GHC -fglasgow-exts #-}
-----------------------------------------------------------------------------
-- |
-- Module : XMonad.Layout.Magnifier
-- Copyright : (c) Peter De Wachter 2007
-- License : BSD-style (see xmonad/LICENSE)
--
-- Maintainer : Peter De Wachter <pdewacht@gmail.com>
-- Stability : unstable
-- Portability : unportable
--
-- Screenshot : <http://caladan.rave.org/magnifier.png>
--
-- This layout hack increases the size of the window that has focus.
--
-----------------------------------------------------------------------------
module XMonad.Layout.Magnifier (
-- * Usage
-- $usage
magnifier,
Magnifier(..),
Magnifier'(..)) where
import Graphics.X11.Xlib (Window, Rectangle(..))
import XMonad
import XMonad.StackSet
import XMonad.Layout.LayoutModifier
-- $usage
-- > import XMonad.Layout.Magnifier
-- > layouts = [ magnifier tiled , magnifier $ mirror tiled ]
-- %import XMonad.Layout.Magnifier
-- %layout , magnifier tiled
-- %layout , magnifier $ mirror tiled
-- | Increase the size of the window that has focus, unless it is the master window.
data Magnifier a = Magnifier deriving (Read, Show)
instance LayoutModifier Magnifier Window where
modifierDescription _ = "Magnifier"
redoLayout _ = unlessMaster applyMagnifier
-- | Increase the size of the window that has focus, even if it is the master window.
data Magnifier' a = Magnifier' deriving (Read, Show)
instance LayoutModifier Magnifier' Window where
modifierDescription _ = "Magnifier'"
redoLayout _ = applyMagnifier
magnifier :: l a -> ModifiedLayout Magnifier l a
magnifier = ModifiedLayout Magnifier
unlessMaster :: forall t t1 a a1 (m :: * -> *). (Monad m) => (t -> Stack a -> t1 -> m (t1, Maybe a1)) -> t -> Stack a -> t1 -> m (t1, Maybe a1)
unlessMaster mainmod r s wrs = if null (up s) then return (wrs, Nothing)
else mainmod r s wrs
applyMagnifier :: Rectangle -> t -> [(Window, Rectangle)] -> X ([(Window, Rectangle)], Maybe a)
applyMagnifier r _ wrs = do focused <- withWindowSet (return . peek)
let mag (w,wr) ws | focused == Just w = ws ++ [(w, shrink r $ magnify wr)]
| otherwise = (w,wr) : ws
return (reverse $ foldr mag [] wrs, Nothing)
magnify :: Rectangle -> Rectangle
magnify (Rectangle x y w h) = Rectangle x' y' w' h'
where x' = x - fromIntegral (w' - w) `div` 2
y' = y - fromIntegral (h' - h) `div` 2
w' = round $ fromIntegral w * zoom
h' = round $ fromIntegral h * zoom
zoom = 1.5 :: Double
shrink :: Rectangle -> Rectangle -> Rectangle
shrink (Rectangle sx sy sw sh) (Rectangle x y w h) = Rectangle x' y' w' h'
where x' = max sx x
y' = max sy y
w' = min w (fromIntegral sx + sw - fromIntegral x')
h' = min h (fromIntegral sy + sh - fromIntegral y')
|
