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|
-----------------------------------------------------------------------------
-- |
-- Module : XMonadContrib.UpdatePointer
-- Copyright : (c) Robert Marlow <robreim@bobturf.org>
-- License : BSD3-style (see LICENSE)
--
-- Maintainer : Robert Marlow <robreim@bobturf.org>
-- Stability : stable
-- Portability : portable
--
-- Causes the pointer to follow whichever window focus changes to. Compliments
-- the idea of switching focus as the mouse crosses window boundaries to
-- keep the mouse near the currently focussed window
--
-----------------------------------------------------------------------------
module XMonad.Actions.UpdatePointer
(
-- * Usage
-- $usage
updatePointer
)
where
import XMonad
import Control.Monad
-- $usage
-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:
--
-- > import XMonad
-- > import XMonad.Hooks.DynamicLog
--
-- Enable it by including it in your logHook definition. Eg:
--
-- > logHook = updatePointer (1%2) (1%2)
--
-- which will move the pointer to the middle of a newly focused window if the
-- focus moves away from the pointer
-- | Update the pointer's location to the currently focused window unless it's
-- already there
updatePointer :: Rational -> Rational -> X ()
updatePointer h v = withFocused $ \w -> do
dpy <- asks display
root <- asks theRoot
wa <- io $ getWindowAttributes dpy w
(sameRoot,_,w',_,_,_,_,_) <- io $ queryPointer dpy root
unless (sameRoot && w == w') $
io $ warpPointer dpy none w 0 0 0 0
(fraction h (wa_width wa)) (fraction v (wa_height wa))
where fraction x y = floor (x * fromIntegral y)
|
