mirror of
https://github.com/elkowar/dots-of-war.git
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68 lines
2.2 KiB
Haskell
68 lines
2.2 KiB
Haskell
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module TiledDragging
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( tiledDrag
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)
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where
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import XMonad
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import qualified XMonad.StackSet as W
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import XMonad.Layout.DraggingVisualizer
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import Control.Monad
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-- | put this as a mouse mapping to be able to drag windows in tiled mode.
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-- you need DraggingVisualizer for this to look good.
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tiledDrag :: Window -> X ()
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tiledDrag window = whenX (isClient window) $ do
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focus window
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(offsetX, offsetY) <- getPointerOffset window
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(winX, winY, winWidth, winHeight) <- getWindowPlacement window
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mouseDrag
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(\posX posY ->
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let rect = Rectangle (fInt (fInt winX + (posX - fInt offsetX)))
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(fInt (fInt winY + (posY - fInt offsetY)))
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(fInt winWidth)
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(fInt winHeight)
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in sendMessage $ DraggingWindow window rect
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)
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(sendMessage DraggingStopped >> performWindowSwitching window)
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-- | get the pointer offset relative to the given windows root coordinates
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getPointerOffset :: Window -> X (Int, Int)
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getPointerOffset win = do
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(_, _, _, oX, oY, _, _, _) <- withDisplay (\d -> io $ queryPointer d win)
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return (fInt oX, fInt oY)
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-- | return a tuple of windowX, windowY, windowWidth, windowHeight
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getWindowPlacement :: Window -> X (Int, Int, Int, Int)
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getWindowPlacement window = do
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wa <- withDisplay (\d -> io $ getWindowAttributes d window)
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return
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(fInt $ wa_x wa, fInt $ wa_y wa, fInt $ wa_width wa, fInt $ wa_height wa)
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performWindowSwitching :: Window -> X ()
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performWindowSwitching win = do
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root <- asks theRoot
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(_, _, selWin, _, _, _, _, _) <- withDisplay (\d -> io $ queryPointer d root)
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ws <- gets windowset
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let allWindows = W.index ws
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when ((win `elem` allWindows) && (selWin `elem` allWindows)) $ do
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let allWindowsSwitched = map (switchEntries win selWin) allWindows
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let (ls, t : rs) = break (== win) allWindowsSwitched
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let newStack = W.Stack t (reverse ls) rs
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windows $ W.modify' $ const newStack
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where
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switchEntries a b x | x == a = b
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| x == b = a
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| otherwise = x
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-- | shorthand for fromIntegral
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fInt :: Integral a => Integral b => a -> b
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fInt = fromIntegral
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