{-# OPTIONS -fglasgow-exts #-}
-----------------------------------------------------------------------------
-- |
-- Module : XMonadContrib.WorkspaceDir
-- Copyright : (c) 2007 David Roundy <droundy@darcs.net>
-- License : BSD3-style (see LICENSE)
--
-- Maintainer : David Roundy <droundy@darcs.net>
-- Stability : unstable
-- Portability : unportable
--
-- WindowNavigation is an extension to allow easy navigation of a workspace.
--
-----------------------------------------------------------------------------
module XMonadContrib.WindowNavigation (
-- * Usage
-- $usage
windowNavigation,
Navigate(..), Direction(..)
) where
import Graphics.X11.Xlib ( Rectangle(..), Window, setWindowBorder )
import Control.Monad.Reader ( ask, asks )
import Data.List ( nub, sortBy, (\\) )
import XMonad
import qualified StackSet as W
import Operations ( focus, initColor, LayoutMessages(..) )
import XMonadContrib.LayoutModifier
import XMonadContrib.Invisible
-- $usage
-- You can use this module with the following in your Config.hs file:
--
-- > import XMonadContrib.WindowNavigation
-- >
-- > defaultLayout = SomeLayout $ windowNavigation $ LayoutSelection ...
--
-- In keybindings:
--
-- > , ((modMask, xK_Right), sendMessage $ Go R)
-- > , ((modMask, xK_Left), sendMessage $ Go L)
-- > , ((modMask, xK_Up), sendMessage $ Go U)
-- > , ((modMask, xK_Down), sendMessage $ Go D)
-- %import XMonadContrib.WindowNavigation
-- %keybind , ((modMask, xK_Right), sendMessage $ Go R)
-- %keybind , ((modMask, xK_Left), sendMessage $ Go L)
-- %keybind , ((modMask, xK_Up), sendMessage $ Go U)
-- %keybind , ((modMask, xK_Down), sendMessage $ Go D)
-- %layout -- include 'windowNavigation' in defaultLayout definition above.
-- %layout -- just before the list, like the following (don't uncomment next line):
-- %layout -- defaultLayout = SomeLayout $ windowNavigation $ ...
data Navigate = Go Direction deriving ( Read, Show, Typeable )
data Direction = U | D | R | L deriving ( Read, Show, Eq )
instance Message Navigate
data NavigationState a = NS Point [(a,Rectangle)]
data WindowNavigation a = WindowNavigation (Invisible Maybe (NavigationState a)) deriving ( Read, Show )
windowNavigation = ModifiedLayout (WindowNavigation (I Nothing))
instance LayoutModifier WindowNavigation Window where
redoLayout (WindowNavigation (I state)) rscr s wrs =
do XConf { display = dpy, normalBorder = nbc } <- ask
navigableColor <- io $ (Just `fmap` initColor dpy "#0000FF") `catch` \_ -> return Nothing
--uc <- io $ (Just `fmap` initColor dpy "#0000FF") `catch` \_ -> return Nothing
--dc <- io $ (Just `fmap` initColor dpy "#00FFFF") `catch` \_ -> return Nothing
--lc <- io $ (Just `fmap` initColor dpy "#FF0000") `catch` \_ -> return Nothing
--rc <- io $ (Just `fmap` initColor dpy "#FF00FF") `catch` \_ -> return Nothing
--let dirc U = uc
-- dirc D = dc
-- dirc L = lc
-- dirc R = rc
let w = W.focus s
r = case filter ((==w).fst) wrs of ((_,x):_) -> x
[] -> rscr
pt = case state of Just (NS ptold _) | ptold `inrect` r -> ptold
_ -> center r
wrs' = filter ((/=w) . fst) wrs
wnavigable = nub $ concatMap
(\d -> truncHead $ sortby d $ filter (inr d pt . snd) wrs') [U,D,R,L]
--wnavigablec = nub $ concatMap
-- (\d -> map (\(w,_) -> (w,dirc d)) $
-- truncHead $ sortby d $ filter (inr d pt . snd) wrs') [U,D,R,L]
wothers = case state of Just (NS _ wo) -> map fst wo
_ -> []
mapM_ (sc (Just nbc)) (wothers \\ map fst wnavigable)
mapM_ (sc navigableColor) $ map fst wnavigable
--mapM_ (\(w,c) -> sc c w) wnavigablec
return (wrs, Just $ WindowNavigation $ I $ Just $ NS pt wnavigable)
handleMess (WindowNavigation (I (Just (NS pt wrs)))) m
| Just (Go d) <- fromMessage m =
case sortby d $ filter (inr d pt . snd) wrs of
[] -> return Nothing
((w,r):_) -> do focus w
return $ Just $ WindowNavigation $ I $ Just $
NS (centerd d pt r) wrs
| Just Hide <- fromMessage m =
do XConf { display = dpy, normalBorder = nbc } <- ask
mapM_ (sc (Just nbc) . fst) wrs
return $ Just $ WindowNavigation $ I $ Just $ NS pt []
| Just ReleaseResources <- fromMessage m =
handleMess (WindowNavigation (I $ Just (NS pt wrs))) (SomeMessage Hide)
handleMess _ _ = return Nothing
truncHead (x:_) = [x]
truncHead [] = []
sc mc win = do dpy <- asks display
case mc of Just c -> io $ setWindowBorder dpy win c
Nothing -> return ()
center (Rectangle x y w h) = P (fromIntegral x + fromIntegral w/2) (fromIntegral y + fromIntegral h/2)
centerd d (P xx yy) (Rectangle x y w h) | d == U || d == D = P xx (fromIntegral y + fromIntegral h/2)
| otherwise = P (fromIntegral x + fromIntegral w/2) yy
inr D (P x y) (Rectangle l yr w h) = x >= fromIntegral l && x < fromIntegral l + fromIntegral w &&
y < fromIntegral yr + fromIntegral h
inr U (P x y) (Rectangle l yr w _) = x >= fromIntegral l && x < fromIntegral l + fromIntegral w &&
y > fromIntegral yr
inr R (P a x) (Rectangle b l _ w) = x >= fromIntegral l && x < fromIntegral l + fromIntegral w &&
a < fromIntegral b
inr L (P a x) (Rectangle b l c w) = x >= fromIntegral l && x < fromIntegral l + fromIntegral w &&
a > fromIntegral b + fromIntegral c
inrect (P x y) (Rectangle a b w h) = x > fromIntegral a && x < fromIntegral a + fromIntegral w &&
y > fromIntegral b && y < fromIntegral b + fromIntegral h
sortby U = sortBy (\(_,Rectangle _ y _ _) (_,Rectangle _ y' _ _) -> compare y' y)
sortby D = sortBy (\(_,Rectangle _ y _ _) (_,Rectangle _ y' _ _) -> compare y y')
sortby R = sortBy (\(_,Rectangle x _ _ _) (_,Rectangle x' _ _ _) -> compare x x')
sortby L = sortBy (\(_,Rectangle x _ _ _) (_,Rectangle x' _ _ _) -> compare x' x)
data Point = P Double Double
