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68 lines
2.4 KiB
Haskell
68 lines
2.4 KiB
Haskell
-----------------------------------------------------------------------------
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-- |
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-- Module : XMonad.Actions.FlexibleResize
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-- Copyright : (c) Lukas Mai
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-- License : BSD3-style (see LICENSE)
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--
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-- Maintainer : <l.mai@web.de>
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-- Stability : unstable
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-- Portability : unportable
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--
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-- Resize floating windows from any corner.
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--
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-----------------------------------------------------------------------------
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module XMonad.Actions.FlexibleResize (
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-- * Usage
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-- $usage
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XMonad.Actions.FlexibleResize.mouseResizeWindow
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) where
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import XMonad
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import Foreign.C.Types
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-- $usage
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-- To use, first import this module into your @~\/.xmonad\/xmonad.hs@ file:
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--
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-- > import qualified XMonad.Actions.FlexibleResize as Flex
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--
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-- Then add an appropriate mouse binding:
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--
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-- > , ((modMask x, button3), (\w -> focus w >> Flex.mouseResizeWindow w))
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--
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-- For detailed instructions on editing your mouse bindings, see
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-- "XMonad.Doc.Extending#Editing_mouse_bindings".
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-- | Resize a floating window from whichever corner the mouse is
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-- closest to.
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mouseResizeWindow :: Window -> X ()
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mouseResizeWindow w = whenX (isClient w) $ withDisplay $ \d -> do
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io $ raiseWindow d w
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wa <- io $ getWindowAttributes d w
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sh <- io $ getWMNormalHints d w
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(_, _, _, _, _, ix, iy, _) <- io $ queryPointer d w
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let
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[pos_x, pos_y, width, height] = map (fromIntegral . ($ wa)) [wa_x, wa_y, wa_width, wa_height]
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west = firstHalf ix width
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north = firstHalf iy height
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(cx, fx, gx) = mkSel west width pos_x
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(cy, fy, gy) = mkSel north height pos_y
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io $ warpPointer d none w 0 0 0 0 cx cy
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mouseDrag (\ex ey -> do
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wa' <- io $ getWindowAttributes d w
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let [px, py] = map (fromIntegral . ($ wa')) [wa_x, wa_y]
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io $ moveResizeWindow d w (fx px (fromIntegral ex))
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(fy py (fromIntegral ey))
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`uncurry` applySizeHints sh (gx $ fromIntegral ex, gy $ fromIntegral ey))
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(float w)
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where
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firstHalf :: CInt -> Position -> Bool
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firstHalf a b = fromIntegral a * 2 <= b
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cfst = curry fst
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csnd = curry snd
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mkSel :: Bool -> Position -> Position -> (Position, a -> a -> a, CInt -> Position)
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mkSel b k p =
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if b
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then (0, csnd, ((k + p) -) . fromIntegral)
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else (k, cfst, subtract p . fromIntegral)
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