diff options
Diffstat (limited to 'XMonad/Actions')
| -rw-r--r-- | XMonad/Actions/UpdatePointer.hs | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/XMonad/Actions/UpdatePointer.hs b/XMonad/Actions/UpdatePointer.hs new file mode 100644 index 0000000..292bfdc --- /dev/null +++ b/XMonad/Actions/UpdatePointer.hs @@ -0,0 +1,54 @@ +----------------------------------------------------------------------------- +-- | +-- 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) + |