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|
-----------------------------------------------------------------------------
-- |
-- Module : Window
-- Copyright : (c) 2011-18, 20 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 Xmobar.X11.Window where
import Prelude
import Control.Monad (when, unless)
import Graphics.X11.Xlib hiding (textExtents)
import Graphics.X11.Xlib.Extras
import Graphics.X11.Xinerama
import Foreign.C.Types (CLong)
import Data.Function (on)
import Data.List (maximumBy)
import Data.Maybe (fromMaybe)
import System.Posix.Process (getProcessID)
import Xmobar.Config.Types
import Xmobar.X11.Text
-- $window
-- | Creates a window with the attribute override_redirect set to True.
-- Windows Managers should not touch this kind of windows.
newWindow :: Display -> Screen -> Window -> Rectangle -> Bool -> IO Window
newWindow dpy scr rw (Rectangle x y w h) o = do
let visual = defaultVisualOfScreen scr
attrmask = if o then cWOverrideRedirect else 0
allocaSetWindowAttributes $
\attributes -> do
set_override_redirect attributes o
createWindow dpy rw x y w h 0 (defaultDepthOfScreen scr)
inputOutput visual attrmask attributes
-- | 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 c (position c) srs (fromIntegral ht)
win <- newWindow d (defaultScreenOfDisplay d) rootw r (overrideRedirect c)
setProperties c d win
setStruts r c d win srs
when (lowerOnStart c) $ lowerWindow d win
unless (hideOnStart c) $ showWindow r c d win
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 c (position c) srs (fromIntegral ht)
moveResizeWindow d win (rect_x r) (rect_y r) (rect_width r) (rect_height r)
setStruts r c d win srs
return r
fi :: (Integral a, Num b) => a -> b
fi = fromIntegral
setPosition :: Config -> XPosition -> [Rectangle] -> Dimension -> Rectangle
setPosition c 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 c p'' [scr] ht
where
(scr@(Rectangle rx ry rw rh), p') =
case p of OnScreen i x -> (fromMaybe (picker rs) $ safeIndex i rs, x)
_ -> (picker 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..]
picker = if pickBroadest c
then maximumBy (compare `on` rect_width)
else head
setProperties :: Config -> Display -> Window -> IO ()
setProperties c d w = do
let mkatom n = internAtom d n False
card <- mkatom "CARDINAL"
atom <- mkatom "ATOM"
setTextProperty d w (wmClass c) wM_CLASS
setTextProperty d w (wmName c) wM_NAME
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
setStruts' :: Display -> Window -> [Foreign.C.Types.CLong] -> IO ()
setStruts' d w svs = do
let mkatom n = internAtom d n False
card <- mkatom "CARDINAL"
pstrut <- mkatom "_NET_WM_STRUT_PARTIAL"
strut <- mkatom "_NET_WM_STRUT"
changeProperty32 d w pstrut card propModeReplace svs
changeProperty32 d w strut card propModeReplace (take 4 svs)
setStruts :: Rectangle -> Config -> Display -> Window -> [Rectangle] -> IO ()
setStruts r c d w rs = do
let svs = map fi $ getStrutValues r (position c) (getRootWindowHeight rs)
setStruts' d w svs
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 -> Int -> Display -> Drawable -> GC -> Pixel
-> Dimension -> Dimension -> IO ()
drawBorder b lw d p gc c wi ht = case b of
NoBorder -> return ()
TopB -> drawBorder (TopBM 0) lw d p gc c wi ht
BottomB -> drawBorder (BottomBM 0) lw d p gc c wi ht
FullB -> drawBorder (FullBM 0) lw d p gc c wi ht
TopBM m -> sf >> sla >>
drawLine d p gc 0 (fi m + boff) (fi wi) (fi m + boff)
BottomBM m -> let rw = fi ht - fi m + boff in
sf >> sla >> drawLine d p gc 0 rw (fi wi) rw
FullBM m -> let mp = fi m
pad = 2 * fi mp + fi lw
in sf >> sla >>
drawRectangle d p gc mp mp (wi - pad) (ht - pad)
where sf = setForeground d gc c
sla = setLineAttributes d gc (fi lw) lineSolid capNotLast joinMiter
boff = borderOffset b lw
-- boff' = calcBorderOffset lw :: Int
hideWindow :: Display -> Window -> IO ()
hideWindow d w = do
setStruts' d w (replicate 12 0)
unmapWindow d w >> sync d False
showWindow :: Rectangle -> Config -> Display -> Window -> IO ()
showWindow r c d w = do
mapWindow d w
getScreenInfo d >>= setStruts r c d w
sync d False
isMapped :: Display -> Window -> IO Bool
isMapped d w = ism <$> getWindowAttributes d w
where ism WindowAttributes { wa_map_state = wms } = wms /= waIsUnmapped
borderOffset :: (Integral a) => Border -> Int -> a
borderOffset b lw =
case b of
BottomB -> negate boffs
BottomBM _ -> negate boffs
TopB -> boffs
TopBM _ -> boffs
_ -> 0
where boffs = calcBorderOffset lw
calcBorderOffset :: (Integral a) => Int -> a
calcBorderOffset = ceiling . (/2) . toDouble
where toDouble = fi :: (Integral a) => a -> Double
|
