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-rw-r--r--src/lib/Xmobar/Window.hs229
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diff --git a/src/lib/Xmobar/Window.hs b/src/lib/Xmobar/Window.hs
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------------------------------------------------------------------------------
--- |
--- Module : Window
--- Copyright : (c) 2011-18 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.Window where
-
-import Prelude
-import Control.Applicative ((<$>))
-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
-import Xmobar.XUtil
-
--- $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
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