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{-# LANGUAGE GeneralizedNewtypeDeriving, ExistentialQuantification #-}
module Phi.X11 ( XConfig(..)
, defaultXConfig
, runPhi
) where
import Graphics.XHB
import Graphics.XHB.Gen.Xinerama
import Graphics.XHB.Gen.Xproto
import Graphics.Rendering.Cairo
import Control.Monad
import Data.Bits
import Data.Char
import Data.List
import Data.Maybe
import Data.Typeable
import Data.Word
import Control.Arrow ((&&&))
import Control.Concurrent
import Control.Concurrent.MVar
import Control.Monad.State.Strict
import Control.Monad.Reader
import Control.Monad.Trans
import System.Exit
import System.Posix.Signals
import System.Posix.Types
import qualified Phi.Bindings.XCB as XCB
import Phi.Phi
import Phi.X11.Util
import qualified Phi.Types as Phi
import qualified Phi.Panel as Panel
import qualified Phi.Widget as Widget
import Phi.Widget hiding (Display, handleMessage)
import Phi.X11.Atoms
data XConfig = XConfig { phiXScreenInfo :: !(Connection -> IO [RECTANGLE])
}
data PhiState w s c = (Widget.Widget w s c) => PhiState { phiRootImage :: !Surface
, phiPanels :: ![PanelState w s c]
, phiRepaint :: !Bool
, phiShutdown :: !Bool
, phiShutdownHold :: !Int
, phiWidgetState :: !s
}
data PanelState w s c = (Widget.Widget w s c) => PanelState { panelWindow :: !WINDOW
, panelPixmap :: !PIXMAP
, panelArea :: !RECTANGLE
, panelScreenArea :: !RECTANGLE
, panelWidgetCache :: !c
}
data PhiConfig w s c = PhiConfig { phiPhi :: !Phi
, phiPanelConfig :: !Panel.PanelConfig
, phiXConfig :: !XConfig
, phiAtoms :: !Atoms
, phiWidget :: !w
}
newtype PhiReader w s c a = PhiReader (ReaderT (PhiConfig w s c) IO a)
deriving (Monad, MonadReader (PhiConfig w s c), MonadIO)
runPhiReader :: PhiConfig w s c -> PhiReader w s c a -> IO a
runPhiReader config (PhiReader a) = runReaderT a config
newtype PhiX w s c a = PhiX (StateT (PhiState w s c) (PhiReader w s c) a)
deriving (Monad, MonadState (PhiState w s c), MonadReader (PhiConfig w s c), MonadIO)
runPhiX :: PhiConfig w s c -> PhiState w s c -> PhiX w s c a -> IO (a, PhiState w s c)
runPhiX config st (PhiX a) = runPhiReader config $ runStateT a st
defaultXConfig = XConfig { phiXScreenInfo = getScreenInfo
}
getScreenInfo :: Connection -> IO [RECTANGLE]
getScreenInfo conn = do
exs <- queryScreens conn >>= getReply
case exs of
Right xs -> return . map screenInfoToRect $ screen_info_QueryScreensReply xs
Left _ -> getGeometry conn (fromXid . toXid $ getRoot conn) >>= getReply' "getScreenInfo: getGeometry failed" >>=
return . (\(MkGetGeometryReply _ _ x y w h _) -> [MkRECTANGLE x y w h])
where
screenInfoToRect (MkScreenInfo x y w h) = MkRECTANGLE x y w h
runPhi :: (Widget.Widget w s c) => XConfig -> Panel.PanelConfig -> w -> IO ()
runPhi xconfig config widget = do
phi <- initPhi
installHandler sigTERM (termHandler phi) Nothing
installHandler sigINT (termHandler phi) Nothing
installHandler sigQUIT (termHandler phi) Nothing
conn <- liftM fromJust connect
xcb <- XCB.connect
atoms <- initAtoms conn
changeWindowAttributes conn (getRoot conn) $ toValueParam [(CWEventMask, toMask [EventMaskPropertyChange, EventMaskStructureNotify])]
bg <- createImageSurface FormatRGB24 1 1
screens <- liftIO $ phiXScreenInfo xconfig conn
panelWindows <- mapM (createPanelWindow conn config) screens
let dispvar = Widget.Display conn atoms
widget' = widget <~> separator 0 (if weight widget > 0 then 0 else 1)
screenPanels = zip screens panelWindows
initialState <- Widget.initWidget widget' phi dispvar screenPanels
runPhiX
PhiConfig { phiPhi = phi
, phiXConfig = xconfig
, phiPanelConfig = config
, phiAtoms = atoms
, phiWidget = widget'
}
PhiState { phiRootImage = bg
, phiPanels = []
, phiRepaint = True
, phiShutdown = False
, phiShutdownHold = 0
, phiWidgetState = initialState
} $ do
updateRootImage conn xcb
panels <- mapM (\(screen, window) -> createPanel conn window screen) screenPanels
forM_ panels $ \panel -> do
setPanelProperties conn panel
liftIO $ mapWindow conn (panelWindow panel)
modify $ \state -> state { phiPanels = panels }
liftIO $ forkIO $ receiveEvents phi conn
forever $ do
available <- messageAvailable phi
unless available $ do
repaint <- gets phiRepaint
when repaint $ do
updatePanels conn xcb
modify $ \state -> state {phiRepaint = False}
message <- receiveMessage phi
handleMessage conn xcb message
case (fromMessage message) of
Just Shutdown ->
modify $ \state -> state { phiShutdown = True }
Just HoldShutdown ->
modify $ \state -> state { phiShutdownHold = phiShutdownHold state + 1 }
Just ReleaseShutdown ->
modify $ \state -> state { phiShutdownHold = phiShutdownHold state - 1 }
_ ->
return ()
shutdown <- gets phiShutdown
shutdownHold <- gets phiShutdownHold
when (shutdown && (shutdownHold == 0)) $
liftIO $ exitSuccess
return ()
termHandler :: Phi -> Handler
termHandler phi = Catch $ sendMessage phi Shutdown
handleMessage :: (Widget w s c) => Connection -> XCB.Connection -> Message -> PhiX w s c ()
handleMessage conn xcb m = do
w <- asks phiWidget
modify $ \state -> state {phiWidgetState = Widget.handleMessage w (phiWidgetState state) m}
case (fromMessage m) of
Just Repaint ->
modify $ \state -> state {phiRepaint = True}
_ ->
case (fromMessage m) of
Just (XEvent event) ->
handleEvent conn xcb event
_ ->
return ()
handleEvent :: (Widget w s c) => Connection -> XCB.Connection -> SomeEvent -> PhiX w s c ()
handleEvent conn xcb event =
case (fromEvent event) of
Just e -> handlePropertyNotifyEvent conn xcb e
Nothing -> case (fromEvent event) of
Just e -> handleConfigureNotifyEvent conn e
Nothing -> return ()
handlePropertyNotifyEvent :: (Widget w s c) => Connection -> XCB.Connection -> PropertyNotifyEvent -> PhiX w s c ()
handlePropertyNotifyEvent conn xcb MkPropertyNotifyEvent { atom_PropertyNotifyEvent = atom } = do
phi <- asks phiPhi
atoms <- asks phiAtoms
panels <- gets phiPanels
when (atom == atom_XROOTPMAP_ID atoms || atom == atom_XROOTMAP_ID atoms) $ do
updateRootImage conn xcb
sendMessage phi ResetBackground
sendMessage phi Repaint
handleConfigureNotifyEvent :: (Widget w s c) => Connection -> ConfigureNotifyEvent -> PhiX w s c ()
handleConfigureNotifyEvent conn MkConfigureNotifyEvent { window_ConfigureNotifyEvent = window } | window == getRoot conn = do
phi <- asks phiPhi
xconfig <- asks phiXConfig
config <- asks phiPanelConfig
panels <- gets phiPanels
let screens = map panelScreenArea panels
screens' <- liftIO $ phiXScreenInfo xconfig conn
when (screens /= screens') $ do
liftIO $ do
mapM_ (freePixmap conn . panelPixmap) panels
mapM_ (destroyWindow conn . panelWindow) $ drop (length screens') panels
let panelsScreens = zip screens' $ map Just panels ++ repeat Nothing
panels' <- forM panelsScreens $ \(screen, mpanel) ->
case mpanel of
Just panel -> do
let rect = panelBounds config screen
win = panelWindow panel
liftIO $ configureWindow conn win $ toValueParam [ (ConfigWindowX, fromIntegral $ x_RECTANGLE rect)
, (ConfigWindowY, fromIntegral $ y_RECTANGLE rect)
, (ConfigWindowWidth, fromIntegral $ width_RECTANGLE rect)
, (ConfigWindowHeight, fromIntegral $ height_RECTANGLE rect)
]
panel' <- createPanel conn win screen
setPanelProperties conn panel'
return panel'
Nothing -> do
win <- liftIO $ createPanelWindow conn config screen
panel <- createPanel conn win screen
setPanelProperties conn panel
liftIO $ mapWindow conn $ panelWindow panel
return panel
modify $ \state -> state { phiPanels = panels' }
sendMessage phi $ UpdateScreens $ map (panelScreenArea &&& panelWindow) panels'
sendMessage phi Repaint
handleConfigureNotifyEvent _ _ = return ()
receiveEvents :: Phi -> Connection -> IO ()
receiveEvents phi conn = do
forever $ waitForEvent conn >>= sendMessage phi . XEvent
updatePanels :: (Widget w s c) => Connection -> XCB.Connection -> PhiX w s c ()
updatePanels conn xcb = do
w <- asks phiWidget
s <- gets phiWidgetState
rootImage <- gets phiRootImage
panels <- gets phiPanels
panels' <- forM panels $ \panel -> do
let pixmap = panelPixmap panel
area = panelArea panel
(panelSurfaces, cache') <- liftIO $ flip runStateT (panelWidgetCache panel) $
(withDimension area $ Widget.render w s 0 0) (panelScreenArea panel)
let screen = head . roots_Setup . connectionSetup $ conn
visualtype = fromJust $ findVisualtype screen (root_visual_SCREEN screen)
xbuffer <- liftIO $ withDimension area $ XCB.createXCBSurface xcb (fromXid . toXid $ pixmap) visualtype
liftIO $ (withDimension area $ withSimilarSurface xbuffer ContentColor) $ \buffer -> do
renderWith buffer $ do
save
translate (-(fromIntegral $ x_RECTANGLE area)) (-(fromIntegral $ y_RECTANGLE area))
withPatternForSurface rootImage $ \pattern -> do
patternSetExtend pattern ExtendRepeat
setSource pattern
paint
restore
forM_ panelSurfaces $ \(updated, SurfaceSlice x surface) -> do
save
translate (fromIntegral x) 0
withPatternForSurface surface setSource
paint
restore
renderWith xbuffer $ do
withPatternForSurface buffer setSource
paint
surfaceFinish xbuffer
-- update window
liftIO $ withDimension area $ XCB.clearArea xcb True (panelWindow panel) 0 0
return $ panel { panelWidgetCache = cache' }
modify $ \state -> state { phiPanels = panels' }
updateRootImage :: Connection -> XCB.Connection -> PhiX w s c ()
updateRootImage conn xcb = do
atoms <- asks phiAtoms
let screen = head . roots_Setup . connectionSetup $ conn
visualtype = fromJust $ findVisualtype screen (root_visual_SCREEN screen)
rootwin = root_SCREEN screen
pixmap <- liftM (fromXid . toXid . fromMaybe 0 . listToMaybe . join . catMaybes) $ forM [atom_XROOTPMAP_ID atoms, atom_XROOTMAP_ID atoms] $
\atom -> liftIO $ getProperty32 conn rootwin atom
(pixmapWidth, pixmapHeight) <- case (fromXid . toXid $ (pixmap :: PIXMAP) :: Word32) of
0 -> return (1, 1)
_ -> liftIO $ getGeometry conn (fromXid . toXid $ pixmap) >>= getReply' "updateRootImage: getGeometry failed" >>= return . (width_GetGeometryReply &&& height_GetGeometryReply)
-- update surface size
oldBg <- gets phiRootImage
imageWidth <- liftM fromIntegral $ imageSurfaceGetWidth oldBg
imageHeight <- liftM fromIntegral $ imageSurfaceGetHeight oldBg
when (imageWidth /= pixmapWidth || imageHeight /= pixmapHeight) $ do
surfaceFinish oldBg
newBg <- liftIO $ createImageSurface FormatRGB24 (fromIntegral pixmapWidth) (fromIntegral pixmapHeight)
modify $ \state -> state { phiRootImage = newBg }
bg <- gets phiRootImage
case (fromXid . toXid $ pixmap :: Word32) of
0 -> do
renderWith bg $ do
setSourceRGB 0 0 0
paint
_ -> do
rootSurface <- liftIO $ XCB.createXCBSurface xcb (fromXid . toXid $ pixmap) visualtype (fromIntegral pixmapWidth) (fromIntegral pixmapHeight)
renderWith bg $ withPatternForSurface rootSurface $ \pattern -> do
setSource pattern
paint
surfaceFinish rootSurface
return ()
createPanel :: (Widget w s c) => Connection -> WINDOW -> RECTANGLE -> PhiX w s c (PanelState w s c)
createPanel conn win screenRect = do
config <- asks phiPanelConfig
w <- asks phiWidget
let rect = panelBounds config screenRect
screen = head . roots_Setup . connectionSetup $ conn
depth = root_depth_SCREEN screen
pixmap <- liftIO $ newResource conn
liftIO $ createPixmap conn $ withDimension rect $ MkCreatePixmap depth pixmap (fromXid . toXid $ win)
liftIO $ changeWindowAttributes conn win $ toValueParam [(CWBackPixmap, fromXid . toXid $ pixmap)]
return PanelState { panelWindow = win
, panelPixmap = pixmap
, panelArea = rect
, panelScreenArea = screenRect
, panelWidgetCache = initCache w
}
createPanelWindow :: Connection -> Panel.PanelConfig -> RECTANGLE -> IO WINDOW
createPanelWindow conn config screenRect = do
let rect = panelBounds config screenRect
screen = head . roots_Setup . connectionSetup $ conn
depth = root_depth_SCREEN screen
rootwin = root_SCREEN screen
visual = root_visual_SCREEN screen
win <- liftIO $ newResource conn
createWindow conn $ (withRectangle rect $ MkCreateWindow depth win rootwin) 0 WindowClassInputOutput visual $
toValueParam [(CWEventMask, toMask [EventMaskExposure]), (CWBackPixel, 0), (CWBorderPixel, 0)]
return win
setPanelProperties :: Connection -> PanelState w s c -> PhiX w s c ()
setPanelProperties conn panel = do
atoms <- asks phiAtoms
liftIO $ do
let name = map (fromIntegral . ord) "Phi"
changeProperty8 conn PropModeReplace (panelWindow panel) (atomWM_NAME atoms) (atomSTRING atoms) name
changeProperty8 conn PropModeReplace (panelWindow panel) (atom_NET_WM_NAME atoms) (atomUTF8_STRING atoms) name
changeProperty32 conn PropModeReplace (panelWindow panel) (atom_NET_WM_WINDOW_TYPE atoms) (atomATOM atoms) [fromXid . toXid $ atom_NET_WM_WINDOW_TYPE_DOCK atoms]
changeProperty32 conn PropModeReplace (panelWindow panel) (atom_NET_WM_DESKTOP atoms) (atomCARDINAL atoms) [0xFFFFFFFF]
changeProperty32 conn PropModeReplace (panelWindow panel) (atom_NET_WM_STATE atoms) (atomATOM atoms) $
map (fromXid . toXid) [ atom_NET_WM_STATE_SKIP_PAGER atoms
, atom_NET_WM_STATE_SKIP_TASKBAR atoms
, atom_NET_WM_STATE_STICKY atoms
, atom_NET_WM_STATE_BELOW atoms
]
changeProperty32 conn PropModeReplace (panelWindow panel) (atom_MOTIF_WM_HINTS atoms) (atom_MOTIF_WM_HINTS atoms) [ 2, 0, 0, 0, 0 ]
changeProperty8 conn PropModeReplace (panelWindow panel) (atomWM_CLASS atoms) (atomSTRING atoms) $ map (fromIntegral . ord) "phi\0Phi"
setStruts conn panel
setStruts :: Connection -> PanelState w s c -> PhiX w s c ()
setStruts conn panel = do
atoms <- asks phiAtoms
config <- asks phiPanelConfig
let rootwin = getRoot conn
position = Panel.panelPosition config
area = panelArea panel
rootHeight <- liftIO $ getGeometry conn (fromXid . toXid $ rootwin) >>= getReply' "setStruts: getGeometry failed" >>= return . height_GetGeometryReply
let struts = [makeStruts i | i <- [0..11]]
where
makeTopStruts 2 = (fromIntegral $ y_RECTANGLE area) + (fromIntegral $ height_RECTANGLE area)
makeTopStruts 8 = (fromIntegral $ x_RECTANGLE area)
makeTopStruts 9 = (fromIntegral $ x_RECTANGLE area) + (fromIntegral $ width_RECTANGLE area) - 1
makeTopStruts _ = 0
makeBottomStruts 3 = (fromIntegral rootHeight) - (fromIntegral $ y_RECTANGLE area)
makeBottomStruts 10 = (fromIntegral $ x_RECTANGLE area)
makeBottomStruts 11 = (fromIntegral $ x_RECTANGLE area) + (fromIntegral $ width_RECTANGLE area) - 1
makeBottomStruts _ = 0
makeStruts = case position of
Phi.Top -> makeTopStruts
Phi.Bottom -> makeBottomStruts
liftIO $ do
changeProperty32 conn PropModeReplace (panelWindow panel) (atom_NET_WM_STRUT atoms) (atomCARDINAL atoms) $ take 4 struts
changeProperty32 conn PropModeReplace (panelWindow panel) (atom_NET_WM_STRUT_PARTIAL atoms) (atomCARDINAL atoms) struts
panelBounds :: Panel.PanelConfig -> RECTANGLE -> RECTANGLE
panelBounds config screenBounds = case Panel.panelPosition config of
Phi.Top -> screenBounds { height_RECTANGLE = fromIntegral $ Panel.panelSize config }
Phi.Bottom -> screenBounds { height_RECTANGLE = fromIntegral $ Panel.panelSize config,
y_RECTANGLE = (y_RECTANGLE screenBounds) + (fromIntegral $ height_RECTANGLE screenBounds) - (fromIntegral $ Panel.panelSize config) }
withRectangle :: (Num x, Num y, Num w, Num h) => RECTANGLE -> (x -> y -> w -> h -> a) -> a
withRectangle r = withDimension r . withPosition r
withPosition :: (Num x, Num y) => RECTANGLE -> (x -> y -> a) -> a
withPosition r f = f (fromIntegral $ x_RECTANGLE r) (fromIntegral $ y_RECTANGLE r)
withDimension :: (Num w, Num h) => RECTANGLE -> (w -> h -> a) -> a
withDimension r f = f (fromIntegral $ width_RECTANGLE r) (fromIntegral $ height_RECTANGLE r)
|