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122 lines
3.8 KiB
Haskell
122 lines
3.8 KiB
Haskell
{-# OPTIONS_GHC -fglasgow-exts #-}
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-----------------------------------------------------------------------------
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-- |
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-- Module : XMonadContrib.FlexibleManipulate
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-- Copyright : (c) Michael Sloan
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-- License : BSD3-style (see LICENSE)
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--
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-- Maintainer : <mgsloan@gmail.com>
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-- Stability : unstable
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-- Portability : unportable
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--
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-- Lets you move and resize floating windows without warping the mouse.
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--
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-----------------------------------------------------------------------------
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-- Based on the FlexibleResize code by Lukas Mai (Mauke)
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module XMonadContrib.FlexibleManipulate (
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-- * Usage
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-- $usage
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mouseWindow, discrete, linear, resize, position
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) where
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import XMonad
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import Operations
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import Graphics.X11.Xlib
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import Graphics.X11.Xlib.Extras
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-- $usage
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-- Add this import to your Config.hs file:
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--
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-- > import qualified XMonadContrib.FlexibleManipulate as Flex
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--
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-- Set one of the mouse button bindings up like this:
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--
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-- > mouseBindings = M.fromList
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-- > [ ((modMask, button1), (\w -> focus w >> Flex.mouseWindow Flex.linear w)) ], ...
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--
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-- Flex.linear indicates that positions between the edges and the middle
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-- indicate a combination scale\/position.
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-- Flex.discrete indicates that there are discrete pick regions. (window
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-- is divided by thirds for each axis)
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-- Flex.resize performs only resize of the window, based on which quadrant
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-- the mouse is in
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-- Flex.position is similar to the builtin mouseMoveWindow
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--
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-- You can also write your own function for this parameter. It should take
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-- a value between 0 and 1 indicating position, and return a value indicating
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-- the corresponding position if plain Flex.linear was used.
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-- %import qualified XMonadContrib.FlexibleManipulate as Flex
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-- %mousebind , ((modMask, button1), (\\w -> focus w >> Flex.mouseWindow Flex.linear w))
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discrete, linear, resize, position :: Double -> Double
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discrete x | x < 0.33 = 0
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| x > 0.66 = 1
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| otherwise = 0.5
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linear = id
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resize x = if x < 0.5 then 0 else 1
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position = const 0.5
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mouseWindow :: (Double -> Double) -> Window -> X ()
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mouseWindow f w = whenX (isClient w) $ withDisplay $ \d -> do
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io $ raiseWindow d w
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[wpos, wsize] <- io $ getWindowAttributes d w >>= return . winAttrs
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sh <- io $ getWMNormalHints d w
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pointer <- io $ queryPointer d w >>= return . pointerPos
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let uv = (pointer - wpos) / wsize
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fc = mapP f uv
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mul = mapP (\x -> 2 - 2 * abs(x - 0.5)) fc --Fudge factors: interpolation between 1 when on edge, 2 in middle
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atl = ((1, 1) - fc) * mul
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abr = fc * mul
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mouseDrag (\ex ey -> io $ do
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let offset = (fromIntegral ex, fromIntegral ey) - pointer
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npos = wpos + offset * atl
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nbr = (wpos + wsize) + offset * abr
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ntl = minP (nbr - (32, 32)) npos --minimum size
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nwidth = applySizeHints sh $ mapP round (nbr - ntl)
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moveResizeWindow d w (round $ fst ntl) (round $ snd ntl) `uncurry` nwidth
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return ())
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(float w)
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float w
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where
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pointerPos (_,_,_,px,py,_,_,_) = (fromIntegral px,fromIntegral py) :: Pnt
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winAttrs :: WindowAttributes -> [Pnt]
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winAttrs x = pairUp $ map (fromIntegral . ($ x)) [wa_x, wa_y, wa_width, wa_height]
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-- I'd rather I didn't have to do this, but I hate writing component 2d math
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type Pnt = (Double, Double)
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pairUp :: [a] -> [(a,a)]
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pairUp [] = []
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pairUp [_] = []
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pairUp (x:y:xs) = (x, y) : (pairUp xs)
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mapP :: (a -> b) -> (a, a) -> (b, b)
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mapP f (x, y) = (f x, f y)
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zipP :: (a -> b -> c) -> (a,a) -> (b,b) -> (c,c)
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zipP f (ax,ay) (bx,by) = (f ax bx, f ay by)
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minP :: Ord a => (a,a) -> (a,a) -> (a,a)
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minP = zipP min
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instance Num Pnt where
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(+) = zipP (+)
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(-) = zipP (-)
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(*) = zipP (*)
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abs = mapP abs
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signum = mapP signum
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fromInteger = const undefined
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instance Fractional Pnt where
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fromRational = const undefined
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recip = mapP recip
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