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|
-----------------------------------------------------------------------------
-- |
-- Module : XMonad.Actions.ConstrainedResize
-- Copyright : (c) Dougal Stanton
-- License : BSD3-style (see LICENSE)
--
-- Maintainer : <dougal@dougalstanton.net>
-- Stability : unstable
-- Portability : unportable
--
-- Lets you constrain the aspect ratio of a floating
-- window by holding shift while you resize.
--
-- Useful for making a nice circular XClock window.
--
-----------------------------------------------------------------------------
module XMonad.Actions.ConstrainedResize (
-- * Usage
-- $usage
XMonad.Actions.ConstrainedResize.mouseResizeWindow
) where
import XMonad
import XMonad.Operations
import Graphics.X11.Xlib
import Graphics.X11.Xlib.Extras
-- $usage
-- Put something like this in your Config.hs file:
--
-- > import qualified XMonad.Actions.ConstrainedResize as Sqr
-- > mouseBindings = M.fromList
-- > [ ...
-- > , ((modMask, button3), (\w -> focus w >> Sqr.mouseResizeWindow w False))
-- > , ((modMask .|. shiftMask, button3), (\w -> focus w >> Sqr.mouseResizeWindow w True )) ]
--
-- The line without the shiftMask replaces the standard mouse resize function call, so it's
-- not completely necessary but seems neater this way.
-- %import qualified XMonad.Actions.ConstrainedResize as Sqr
-- %mousebind , ((modMask, button3), (\\w -> focus w >> Sqr.mouseResizeWindow w False))
-- %mousebind , ((modMask .|. shiftMask, button3), (\\w -> focus w >> Sqr.mouseResizeWindow w True))
-- | Resize (floating) window with optional aspect ratio constraints.
mouseResizeWindow :: Window -> Bool -> X ()
mouseResizeWindow w c = whenX (isClient w) $ withDisplay $ \d -> do
io $ raiseWindow d w
wa <- io $ getWindowAttributes d w
sh <- io $ getWMNormalHints d w
io $ warpPointer d none w 0 0 0 0 (fromIntegral (wa_width wa)) (fromIntegral (wa_height wa))
mouseDrag (\ex ey -> do
let x = ex - fromIntegral (wa_x wa)
y = ey - fromIntegral (wa_y wa)
sz = if c then (max x y, max x y) else (x,y)
io $ resizeWindow d w `uncurry`
applySizeHints sh sz)
(float w)
|
