128 lines
5.5 KiB
Haskell
128 lines
5.5 KiB
Haskell
-----------------------------------------------------------------------------
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-- |
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-- Module : XMonad.Actions.FloatKeys
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-- Copyright : (c) Karsten Schoelzel <kuser@gmx.de>
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-- License : BSD
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--
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-- Maintainer : Karsten Schoelzel <kuser@gmx.de>
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-- Stability : stable
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-- Portability : unportable
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--
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-- Move and resize floating windows.
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-----------------------------------------------------------------------------
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module FloatKeys (
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-- * Usage
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-- $usage
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keysMoveWindow,
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keysMoveWindowTo,
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keysResizeWindow,
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keysAbsResizeWindow) where
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import XMonad
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import Control.Arrow ((***))
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-- $usage
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-- You can use this module with the following in your @~\/.xmonad\/xmonad.hs@:
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--
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-- > import XMonad.Actions.FloatKeys
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--
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-- Then add appropriate key bindings, for example:
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--
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-- > , ((modm, xK_d ), withFocused (keysResizeWindow (-10,-10) (1,1)))
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-- > , ((modm, xK_s ), withFocused (keysResizeWindow (10,10) (1,1)))
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-- > , ((modm .|. shiftMask, xK_d ), withFocused (keysAbsResizeWindow (-10,-10) (1024,752)))
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-- > , ((modm .|. shiftMask, xK_s ), withFocused (keysAbsResizeWindow (10,10) (1024,752)))
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-- > , ((modm, xK_a ), withFocused (keysMoveWindowTo (512,384) (1%2,1%2)))
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--
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-- For detailed instructions on editing your key bindings, see
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-- "XMonad.Doc.Extending#Editing_key_bindings".
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-- | @keysMoveWindow (dx, dy)@ moves the window by @dx@ pixels to the
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-- right and @dy@ pixels down.
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keysMoveWindow :: D -> Window -> X ()
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keysMoveWindow (dx,dy) 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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io $ moveWindow d w (fromIntegral (fromIntegral (wa_x wa) + dx))
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(fromIntegral (fromIntegral (wa_y wa) + dy))
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float w
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-- | @keysMoveWindowTo (x, y) (gx, gy)@ moves the window relative
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-- point @(gx, gy)@ to the point @(x,y)@, where @(gx,gy)@ gives a
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-- position relative to the window border, i.e. @gx = 0@ is the left
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-- border, @gx = 1@ is the right border, @gy = 0@ is the top border, and
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-- @gy = 1@ the bottom border.
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--
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-- For example, on a 1024x768 screen:
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--
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-- > keysMoveWindowTo (512,384) (1%2, 1%2) -- center the window on screen
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-- > keysMoveWindowTo (1024,0) (1, 0) -- put window in the top right corner
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keysMoveWindowTo :: P -> G -> Window -> X ()
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keysMoveWindowTo (x,y) (gx, gy) 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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io $ moveWindow d w (x - round (gx * fromIntegral (wa_width wa)))
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(y - round (gy * fromIntegral (wa_height wa)))
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float w
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type G = (Rational, Rational)
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type P = (Position, Position)
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-- | @keysResizeWindow (dx, dy) (gx, gy)@ changes the width by @dx@
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-- and the height by @dy@, leaving the window-relative point @(gx,
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-- gy)@ fixed.
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--
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-- For example:
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--
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-- > keysResizeWindow (10, 0) (0, 0) -- make the window 10 pixels larger to the right
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-- > keysResizeWindow (10, 0) (0, 1%2) -- does the same, unless sizeHints are applied
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-- > keysResizeWindow (10, 10) (1%2, 1%2) -- add 5 pixels on each side
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-- > keysResizeWindow (-10, -10) (0, 1) -- shrink the window in direction of the bottom-left corner
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keysResizeWindow :: D -> G -> Window -> X ()
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keysResizeWindow = keysMoveResize keysResizeWindow'
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-- | @keysAbsResizeWindow (dx, dy) (ax, ay)@ changes the width by @dx@
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-- and the height by @dy@, leaving the screen absolute point @(ax,
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-- ay)@ fixed.
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--
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-- For example:
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--
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-- > keysAbsResizeWindow (10, 10) (0, 0) -- enlarge the window; if it is not in the top-left corner it will also be moved down and to the right.
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keysAbsResizeWindow :: D -> D -> Window -> X ()
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keysAbsResizeWindow = keysMoveResize keysAbsResizeWindow'
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keysAbsResizeWindow' :: SizeHints -> P -> D -> D -> D -> (P,D)
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keysAbsResizeWindow' sh (x,y) (w,h) (dx,dy) (ax, ay) = ((round nx, round ny), (nw, nh))
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where
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(minw, minh) = maybe (10,10) ((***) (max 10) (max 10)) $ sh_min_size sh
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(nw, nh) = if w + dx > minw && h + dy > minh then applySizeHintsContents sh (w + dx, h + dy)
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else (w, h)
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nx :: Rational
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nx = fromIntegral (ax * w + nw * (fromIntegral x - ax)) / fromIntegral w
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ny :: Rational
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ny = fromIntegral (ay * h + nh * (fromIntegral y - ay)) / fromIntegral h
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keysResizeWindow' :: SizeHints -> P -> D -> D -> G -> (P,D)
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keysResizeWindow' sh (x,y) (w,h) (dx,dy) (gx, gy) = ((nx, ny), (nw, nh))
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where
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-- Prevent shrinking a window too small and getting one's foot shot
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(minw, minh) = maybe (10,10) ((***) (max 10) (max 10)) $ sh_min_size sh
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(nw, nh) = if w + dx > minw && h + dy > minh then applySizeHintsContents sh (w + dx, h + dy)
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else (w, h)
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nx = round $ fromIntegral x + gx * fromIntegral w - gx * fromIntegral nw
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ny = round $ fromIntegral y + gy * fromIntegral h - gy * fromIntegral nh
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keysMoveResize :: (SizeHints -> P -> D -> a -> b -> (P,D)) -> a -> b -> Window -> X ()
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keysMoveResize f move resize 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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let sh = sh' {sh_resize_inc = Nothing, sh_aspect = Nothing}
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wa_dim = (fromIntegral $ wa_width wa, fromIntegral $ wa_height wa)
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wa_pos = (fromIntegral $ wa_x wa, fromIntegral $ wa_y wa)
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(wn_pos, wn_dim) = f sh wa_pos wa_dim move resize
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io $ resizeWindow d w `uncurry` wn_dim
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io $ moveWindow d w `uncurry` wn_pos
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float w
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