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|
-----------------------------------------------------------------------------
-- |
-- Module : XMonadContrib.Warp
-- Copyright : (c) daniel@wagner-home.com
-- License : BSD3-style (see LICENSE)
--
-- Maintainer : daniel@wagner-home.com
-- Stability : unstable
-- Portability : unportable
--
-- This can be used to make a keybinding that warps the pointer to a given
-- window or screen.
--
-----------------------------------------------------------------------------
module XMonadContrib.Warp (
-- * Usage
-- $usage
warpToScreen,
warpToWindow
) where
import Data.Ratio
import Data.Maybe
import Data.List
import Control.Monad.RWS
import Graphics.X11.Xlib
import Graphics.X11.Xlib.Extras
import Operations
import XMonad
import StackSet as W
{- $usage
This can be used to make a keybinding that warps the pointer to a given
window or screen. For example, I've added the following keybindings to
my Config.hs:
> , ((modMask, xK_z ), warpToWindow (1%2) (1%2)) -- @@ Move pointer to currently focused window
>
>-- mod-ctrl-{w,e,r} @@ Move mouse pointer to screen 1, 2, or 3
>
> [((modMask .|. controlMask, key), warpToScreen sc (1%2) (1%2))
> | (key, sc) <- zip [xK_w, xK_e, xK_r] [0..]]
Note that warping to a particular screen may change the focus.
-}
-- %import XMonadContrib.Warp
-- %keybind , ((modMask, xK_z ), warpToWindow (1%2) (1%2)) -- @@ Move pointer to currently focused window
-- %keybindlist ++
-- %keybindlist -- mod-ctrl-{w,e,r} @@ Move mouse pointer to screen 1, 2, or 3
-- %keybindlist [((modMask .|. controlMask, key), warpToScreen sc (1%2) (1%2))
-- %keybindlist | (key, sc) <- zip [xK_w, xK_e, xK_r] [0..]]
fraction :: (Integral a, Integral b) => Rational -> a -> b
fraction f x = floor (f * fromIntegral x)
ix :: Int -> [a] -> Maybe a
ix n = listToMaybe . take 1 . drop n
warp :: Window -> Position -> Position -> X ()
warp w x y = withDisplay $ \d -> io $ warpPointer d none w 0 0 0 0 x y
warpToWindow :: Rational -> Rational -> X ()
warpToWindow h v =
withDisplay $ \d ->
withFocused $ \w -> do
wa <- io $ getWindowAttributes d w
warp w (fraction h (wa_width wa)) (fraction v (wa_height wa))
warpToScreen :: ScreenId -> Rational -> Rational -> X ()
warpToScreen n h v = do
root <- asks theRoot
(StackSet {current = x, visible = xs}) <- gets windowset
whenJust (fmap (screenRect . W.screenDetail) . find ((n==) . W.screen) $ x : xs)
$ \r ->
warp root (rect_x r + fraction h (rect_width r))
(rect_y r + fraction v (rect_height r))
|
