module XMonad.Actions.FlexibleResize (
XMonad.Actions.FlexibleResize.mouseResizeWindow
) where
import XMonad
import Foreign.C.Types
mouseResizeWindow :: Window -> X ()
mouseResizeWindow w = whenX (isClient w) $ withDisplay $ \d -> do
io $ raiseWindow d w
wa <- io $ getWindowAttributes d w
sh <- io $ getWMNormalHints d w
(_, _, _, _, _, ix, iy, _) <- io $ queryPointer d w
let
[pos_x, pos_y, width, height] = map (fromIntegral . ($ wa)) [wa_x, wa_y, wa_width, wa_height]
west = firstHalf ix width
north = firstHalf iy height
(cx, fx, gx) = mkSel west width pos_x
(cy, fy, gy) = mkSel north height pos_y
io $ warpPointer d none w 0 0 0 0 cx cy
mouseDrag (\ex ey -> do
wa' <- io $ getWindowAttributes d w
let [px, py] = map (fromIntegral . ($ wa')) [wa_x, wa_y]
io $ moveResizeWindow d w (fx px (fromIntegral ex))
(fy py (fromIntegral ey))
`uncurry` applySizeHints sh (gx $ fromIntegral ex, gy $ fromIntegral ey))
(float w)
where
firstHalf :: CInt -> Position -> Bool
firstHalf a b = fromIntegral a * 2 <= b
cfst = curry fst
csnd = curry snd
mkSel :: Bool -> Position -> Position -> (Position, a -> a -> a, CInt -> Position)
mkSel b k p =
if b
then (0, csnd, ((k + p) ) . fromIntegral)
else (k, cfst, subtract p . fromIntegral)