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|
-----------------------------------------------------------------------------
-- |
-- Module : Window
-- Copyright : (c) 2011-13 Jose A. Ortega Ruiz
-- : (c) 2012 Jochen Keil
-- License : BSD-style (see LICENSE)
--
-- Maintainer : Jose A. Ortega Ruiz <jao@gnu.org>
-- Stability : unstable
-- Portability : unportable
--
-- Window manipulation functions
--
-----------------------------------------------------------------------------
module Window where
import Prelude
import Control.Monad (when, unless)
import Graphics.X11.Xlib hiding (textExtents, textWidth)
import Graphics.X11.Xlib.Extras
import Graphics.X11.Xinerama
import Data.Maybe(fromMaybe)
import System.Posix.Process (getProcessID)
import Config
import XUtil
-- $window
-- | The function to create the initial window
createWin :: Display -> XFont -> Config -> IO (Rectangle,Window)
createWin d fs c = do
let dflt = defaultScreen d
srs <- getScreenInfo d
rootw <- rootWindow d dflt
(as,ds) <- textExtents fs "0"
let ht = as + ds + 4
r = setPosition (position c) srs (fi ht)
win <- newWindow d (defaultScreenOfDisplay d) rootw r (overrideRedirect c)
when (lowerOnStart c) (lowerWindow d win)
unless (hideOnStart c) $ showWindow r c d win
setProperties r c d win srs
return (r,win)
-- | Updates the size and position of the window
repositionWin :: Display -> Window -> XFont -> Config -> IO Rectangle
repositionWin d win fs c = do
srs <- getScreenInfo d
(as,ds) <- textExtents fs "0"
let ht = as + ds + 4
r = setPosition (position c) srs (fi ht)
moveResizeWindow d win (rect_x r) (rect_y r) (rect_width r) (rect_height r)
setProperties r c d win srs
return r
setPosition :: XPosition -> [Rectangle] -> Dimension -> Rectangle
setPosition p rs ht =
case p' of
Top -> Rectangle rx ry rw h
TopP l r -> Rectangle (rx + fi l) ry (rw - fi l - fi r) h
TopW a i -> Rectangle (ax a i) ry (nw i) h
TopSize a i ch -> Rectangle (ax a i) ry (nw i) (mh ch)
Bottom -> Rectangle rx ny rw h
BottomW a i -> Rectangle (ax a i) ny (nw i) h
BottomP l r -> Rectangle (rx + fi l) ny (rw - fi l - fi r) h
BottomSize a i ch -> Rectangle (ax a i) (ny' ch) (nw i) (mh ch)
Static cx cy cw ch -> Rectangle (fi cx) (fi cy) (fi cw) (fi ch)
OnScreen _ p'' -> setPosition p'' [scr] ht
where
(scr@(Rectangle rx ry rw rh), p') =
case p of OnScreen i x -> (fromMaybe (head rs) $ safeIndex i rs, x)
_ -> (head rs, p)
ny = ry + fi (rh - ht)
center i = rx + fi (div (remwid i) 2)
right i = rx + fi (remwid i)
remwid i = rw - pw (fi i)
ax L = const rx
ax R = right
ax C = center
pw i = rw * min 100 i `div` 100
nw = fi . pw . fi
h = fi ht
mh h' = max (fi h') h
ny' h' = ry + fi (rh - mh h')
safeIndex i = lookup i . zip [0..]
setProperties :: Rectangle -> Config -> Display -> Window -> [Rectangle]
-> IO ()
setProperties r c d w rs = do
let mkatom n = internAtom d n False
card <- mkatom "CARDINAL"
atom <- mkatom "ATOM"
setTextProperty d w "xmobar" wM_CLASS
setTextProperty d w "xmobar" wM_NAME
ismapped <- isMapped d w
let svs = if ismapped
then map fi $ getStrutValues r
(position c)
(getRootWindowHeight rs)
else replicate 12 0
pstrut <- mkatom "_NET_WM_STRUT_PARTIAL"
changeProperty32 d w pstrut card propModeReplace svs
strut <- mkatom "_NET_WM_STRUT"
changeProperty32 d w strut card propModeReplace (take 4 svs)
wtype <- mkatom "_NET_WM_WINDOW_TYPE"
dock <- mkatom "_NET_WM_WINDOW_TYPE_DOCK"
changeProperty32 d w wtype atom propModeReplace [fi dock]
when (allDesktops c) $ do
desktop <- mkatom "_NET_WM_DESKTOP"
changeProperty32 d w desktop card propModeReplace [0xffffffff]
pid <- mkatom "_NET_WM_PID"
getProcessID >>= changeProperty32 d w pid card propModeReplace . return . fi
getRootWindowHeight :: [Rectangle] -> Int
getRootWindowHeight srs = maximum (map getMaxScreenYCoord srs)
where
getMaxScreenYCoord sr = fi (rect_y sr) + fi (rect_height sr)
getStrutValues :: Rectangle -> XPosition -> Int -> [Int]
getStrutValues r@(Rectangle x y w h) p rwh =
case p of
OnScreen _ p' -> getStrutValues r p' rwh
Top -> [0, 0, st, 0, 0, 0, 0, 0, nx, nw, 0, 0]
TopP _ _ -> [0, 0, st, 0, 0, 0, 0, 0, nx, nw, 0, 0]
TopW _ _ -> [0, 0, st, 0, 0, 0, 0, 0, nx, nw, 0, 0]
TopSize {} -> [0, 0, st, 0, 0, 0, 0, 0, nx, nw, 0, 0]
Bottom -> [0, 0, 0, sb, 0, 0, 0, 0, 0, 0, nx, nw]
BottomP _ _ -> [0, 0, 0, sb, 0, 0, 0, 0, 0, 0, nx, nw]
BottomW _ _ -> [0, 0, 0, sb, 0, 0, 0, 0, 0, 0, nx, nw]
BottomSize {} -> [0, 0, 0, sb, 0, 0, 0, 0, 0, 0, nx, nw]
Static {} -> getStaticStrutValues p rwh
where st = fi y + fi h
sb = rwh - fi y
nx = fi x
nw = fi (x + fi w - 1)
-- get some reaonable strut values for static placement.
getStaticStrutValues :: XPosition -> Int -> [Int]
getStaticStrutValues (Static cx cy cw ch) rwh
-- if the yPos is in the top half of the screen, then assume a Top
-- placement, otherwise, it's a Bottom placement
| cy < (rwh `div` 2) = [0, 0, st, 0, 0, 0, 0, 0, xs, xe, 0, 0]
| otherwise = [0, 0, 0, sb, 0, 0, 0, 0, 0, 0, xs, xe]
where st = cy + ch
sb = rwh - cy
xs = cx -- a simple calculation for horizontal (x) placement
xe = xs + cw
getStaticStrutValues _ _ = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
drawBorder :: Border -> Display -> Drawable -> GC -> Pixel
-> Dimension -> Dimension -> IO ()
drawBorder b d p gc c wi ht = case b of
NoBorder -> return ()
TopB -> drawBorder (TopBM 0) d p gc c w h
BottomB -> drawBorder (BottomBM 0) d p gc c w h
FullB -> drawBorder (FullBM 0) d p gc c w h
TopBM m -> sf >> drawLine d p gc 0 (fi m) (fi w) 0
BottomBM m -> let rw = fi h - fi m in
sf >> drawLine d p gc 0 rw (fi w) rw
FullBM m -> let pad = 2 * fi m; mp = fi m in
sf >> drawRectangle d p gc mp mp (w - pad) (h - pad)
where sf = setForeground d gc c
(w, h) = (wi - 1, ht - 1)
hideWindow :: Display -> Window -> IO ()
hideWindow d w = do
a <- internAtom d "_NET_WM_STRUT_PARTIAL" False
c <- internAtom d "CARDINAL" False
changeProperty32 d w a c propModeReplace $ replicate 12 0
unmapWindow d w >> sync d False
showWindow :: Rectangle -> Config -> Display -> Window -> IO ()
showWindow r cfg d w = do
srs <- getScreenInfo d
a <- internAtom d "_NET_WM_STRUT_PARTIAL" False
c <- internAtom d "CARDINAL" False
changeProperty32 d w a c propModeReplace $ map fi $
getStrutValues r (position cfg) (getRootWindowHeight srs)
mapWindow d w >> sync d False
isMapped :: Display -> Window -> IO Bool
isMapped d w = fmap ism $ getWindowAttributes d w
where ism (WindowAttributes { wa_map_state = wms }) = wms /= waIsUnmapped
|
