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81 lines
2.8 KiB
Haskell
81 lines
2.8 KiB
Haskell
-----------------------------------------------------------------------------
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-- |
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-- Module : XMonad.Actions.FlexibleResize
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-- Description : Resize floating windows from any corner.
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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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XMonad.Actions.FlexibleResize.mouseResizeEdgeWindow
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) where
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import XMonad
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import XMonad.Prelude (fi)
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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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-- > , ((modm, 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
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:: Window -- ^ The window to resize.
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-> X ()
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mouseResizeWindow = mouseResizeEdgeWindow 0
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-- | Resize a floating window from whichever corner or edge the mouse is
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-- closest to.
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mouseResizeEdgeWindow
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:: Rational -- ^ The size of the area where only one edge is resized.
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-> Window -- ^ The window to resize.
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-> X ()
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mouseResizeEdgeWindow edge w = whenX (isClient w) $ withDisplay $ \d -> do
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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 (fi . ($ wa)) [wa_x, wa_y, wa_width, wa_height]
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west = findPos ix width
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north = findPos 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 let (nw,nh) = applySizeHintsContents sh (gx ex, gy ey)
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io $ moveResizeWindow d w (fx nw) (fy nh) nw nh
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float w)
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(float w)
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where
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findPos :: CInt -> Position -> Maybe Bool
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findPos m s
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| p < 0.5 - edge/2 = Just True
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| p < 0.5 + edge/2 = Nothing
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| otherwise = Just False
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where
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p = fi m / fi s
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mkSel :: Maybe Bool -> Position -> Position -> (Position, Dimension -> Position, Position -> Dimension)
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mkSel b k p = case b of
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Just True -> (0, (fi k + fi p -).fi, (fi k + fi p -).fi)
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Nothing -> (k `div` 2, const p, const $ fi k)
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Just False -> (k, const p, subtract (fi p) . fi)
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