diff options
Diffstat (limited to 'XMonad/Actions')
| -rw-r--r-- | XMonad/Actions/UpdatePointer.hs | 84 |
1 files changed, 39 insertions, 45 deletions
diff --git a/XMonad/Actions/UpdatePointer.hs b/XMonad/Actions/UpdatePointer.hs index 9bd4fd4..8dbf5b6 100644 --- a/XMonad/Actions/UpdatePointer.hs +++ b/XMonad/Actions/UpdatePointer.hs @@ -19,12 +19,12 @@ module XMonad.Actions.UpdatePointer -- * Usage -- $usage updatePointer - , PointerPosition (..) ) where import XMonad import XMonad.Util.XUtils (fi) +import Control.Arrow import Control.Monad import XMonad.StackSet (member, peek, screenDetail, current) import Data.Maybe @@ -35,36 +35,32 @@ import Data.Maybe -- > import XMonad -- > import XMonad.Actions.UpdatePointer -- --- Enable it by including it in your logHook definition. Eg: +-- Enable it by including it in your logHook definition, e.g.: -- --- > logHook = updatePointer Nearest +-- > logHook = updatePointer (0.5, 0.5) (1, 1) -- --- which will move the pointer to the nearest point of a newly focused window, or +-- which will move the pointer to the nearest point of a newly focused +-- window. The first argument establishes a reference point within the +-- newly-focused window, while the second argument linearly interpolates +-- between said reference point and the edges of the newly-focused window to +-- obtain a bounding box for the pointer. -- --- > logHook = updatePointer (Relative 0.5 0.5) --- --- which will move the pointer to the center of a newly focused window, or --- --- > logHook = updatePointer (TowardsCentre 0.75 0.75) --- --- which will linearly interpolate the pointer between 'Nearest' and ¾ of --- the way towards the centre of the window. +-- > logHook = updatePointer (0.5, 0.5) (0, 0) -- exact centre of window +-- > logHook = updatePointer (0.25, 0.25) (0.25, 0.25) -- near the top-left +-- > logHook = updatePointer (0.5, 0.5) (1.1, 1.1) -- within 110% of the edge -- -- To use this with an existing logHook, use >> : -- -- > logHook = dynamicLog --- > >> updatePointer (Relative 1 1) +-- > >> updatePointer (1, 1) (0, 0) -- -- which moves the pointer to the bottom-right corner of the focused window. -data PointerPosition = Nearest | Relative Rational Rational | TowardsCentre Rational Rational - deriving (Read,Show) - -- | Update the pointer's location to the currently focused -- window or empty screen unless it's already there, or unless the user was changing -- focus with the mouse -updatePointer :: PointerPosition -> X () -updatePointer p = do +updatePointer :: (Rational, Rational) -> (Rational, Rational) -> X () +updatePointer refPos ratio = do ws <- gets windowset dpy <- asks display rect <- case peek ws of @@ -72,39 +68,37 @@ updatePointer p = do Just w -> windowAttributesToRectangle `fmap` io (getWindowAttributes dpy w) root <- asks theRoot mouseIsMoving <- asks mouseFocused - (_sameRoot,_,currentWindow,rootx,rooty,_,_,_) <- io $ queryPointer dpy root + (_sameRoot,_,currentWindow,rootX,rootY,_,_,_) <- io $ queryPointer dpy root drag <- gets dragging - unless (pointWithin (fi rootx) (fi rooty) rect + unless (pointWithin (fi rootX) (fi rootY) rect || mouseIsMoving || isJust drag - || not (currentWindow `member` ws || currentWindow == none)) $ - case p of - Nearest -> do - let x = moveWithin (fi rootx) (rect_x rect) (fi (rect_x rect) + fi (rect_width rect)) - y = moveWithin (fi rooty) (rect_y rect) (fi (rect_y rect) + fi (rect_height rect)) - io $ warpPointer dpy none root 0 0 0 0 x y - TowardsCentre xfrc yfrc -> do - let cx = fi (rect_width rect) / 2 + fi (rect_x rect) - cy = fi (rect_height rect) / 2 + fi (rect_y rect) - x,y,cx,cy :: Rational - x = moveWithin (fi rootx) (fi $ rect_x rect) (fi (rect_x rect) + fi (rect_width rect)) - y = moveWithin (fi rooty) (fi $ rect_y rect) (fi (rect_y rect) + fi (rect_height rect)) - io $ warpPointer dpy none root 0 0 0 0 (round $ x + xfrc*(cx-x)) (round $ y + yfrc*(cy-y)) - Relative h v -> - io $ warpPointer dpy none root 0 0 0 0 - (rect_x rect + fraction h (rect_width rect)) - (rect_y rect + fraction v (rect_height rect)) - where fraction x y = floor (x * fromIntegral y) + || not (currentWindow `member` ws || currentWindow == none)) $ let + -- focused rectangle + (rectX, rectY) = (rect_x &&& rect_y) rect + (rectW, rectH) = (fi . rect_width &&& fi . rect_height) rect + -- reference position, with (0,0) and (1,1) being top-left and bottom-right + refX = lerp (fst refPos) rectX (rectX + rectW) + refY = lerp (snd refPos) rectY (rectY + rectH) + -- final pointer bounds, lerped *outwards* from reference position + boundsX = join (***) (lerp (fst ratio) refX) (rectX, rectX + rectW) + boundsY = join (***) (lerp (snd ratio) refY) (rectY, rectY + rectH) + -- ideally we ought to move the pointer in a straight line towards the + -- reference point until it is within the above bounds, but… + in io $ warpPointer dpy none root 0 0 0 0 + (round . clip boundsX $ fi rootX) + (round . clip boundsY $ fi rootY) windowAttributesToRectangle :: WindowAttributes -> Rectangle windowAttributesToRectangle wa = Rectangle (fi (wa_x wa)) (fi (wa_y wa)) (fi (wa_width wa + 2 * wa_border_width wa)) (fi (wa_height wa + 2 * wa_border_width wa)) -moveWithin :: Ord a => a -> a -> a -> a -moveWithin now lower upper = - if now < lower - then lower - else if now > upper - then upper - else now + +lerp :: (RealFrac r, Real a, Real b) => r -> a -> b -> r +lerp r a b = (1 - r) * realToFrac a + r * realToFrac b + +clip :: Ord a => (a, a) -> a -> a +clip (lower, upper) x = if x < lower then lower + else if x > upper then upper else x + |