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476fb301d4
This patch depends on the following xmonad core patch: Remember if focus changes were caused by mouse actions or by key commands If the user was moving the mouse, it's not appropriate to move the pointer around in resonse to focus changes. Do that only in response to keyboard commands.
84 lines
2.6 KiB
Haskell
84 lines
2.6 KiB
Haskell
-----------------------------------------------------------------------------
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-- |
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-- Module : XMonadContrib.UpdatePointer
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-- Copyright : (c) Robert Marlow <robreim@bobturf.org>
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-- License : BSD3-style (see LICENSE)
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--
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-- Maintainer : Robert Marlow <robreim@bobturf.org>
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-- Stability : stable
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-- Portability : portable
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--
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-- Causes the pointer to follow whichever window focus changes to. Compliments
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-- the idea of switching focus as the mouse crosses window boundaries to
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-- keep the mouse near the currently focused window
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--
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-----------------------------------------------------------------------------
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module XMonad.Actions.UpdatePointer
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(
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-- * Usage
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-- $usage
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updatePointer
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, PointerPosition (..)
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)
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where
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import XMonad
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import Control.Monad
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-- $usage
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-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:
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--
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-- > import XMonad
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-- > import XMonad.Actions.UpdatePointer
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--
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-- Enable it by including it in your logHook definition. Eg:
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--
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-- > logHook = updatePointer Nearest
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--
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-- which will move the pointer to the nearest point of a newly focused window, or
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--
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-- > logHook = updatePointer (Relative 0.5 0.5)
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--
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-- which will move the pointer to the center of a newly focused window.
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--
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-- To use this with an existing logHook, use >> :
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--
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-- > logHook = dynamicLog
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-- > >> updatePointer (Relative 1 1)
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--
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-- which moves the pointer to the bottom-right corner of the focused window.
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data PointerPosition = Nearest | Relative Rational Rational
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-- | Update the pointer's location to the currently focused
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-- window unless it's already there, or unless the user was changing
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-- focus with the mouse
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updatePointer :: PointerPosition -> X ()
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updatePointer p = withFocused $ \w -> do
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dpy <- asks display
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root <- asks theRoot
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mouseIsMoving <- asks mouseFocused
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wa <- io $ getWindowAttributes dpy w
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(_sameRoot,_,w',rootx,rooty,_,_,_) <- io $ queryPointer dpy root
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-- Can sameRoot ever be false in this case? I'm going to assume not
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unless (w == w' || mouseIsMoving) $
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case p of
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Nearest -> do
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let x = moveWithin rootx (wa_x wa) ((wa_x wa) + (wa_width wa))
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let y = moveWithin rooty (wa_y wa) ((wa_y wa) + (wa_height wa))
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io $ warpPointer dpy none root 0 0 0 0 (fromIntegral x) (fromIntegral y)
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Relative h v ->
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io $ warpPointer dpy none w 0 0 0 0
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(fraction h (wa_width wa)) (fraction v (wa_height wa))
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where fraction x y = floor (x * fromIntegral y)
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moveWithin :: Integral a => a -> a -> a -> a
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moveWithin current lower upper =
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if current < lower
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then lower
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else if current > upper
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then upper
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else current
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