458 lines
17 KiB
Haskell
458 lines
17 KiB
Haskell
{-# LANGUAGE GeneralizedNewtypeDeriving, ExistentialQuantification #-}
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module Phi.X11 ( XConfig(..)
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, defaultXConfig
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, runPhi
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) where
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import Graphics.X11.Xlib
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import Graphics.X11.Xlib.Extras
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import Graphics.X11.Xinerama
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import Graphics.Rendering.Cairo
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import Control.Monad
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import Data.Maybe
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import Data.Bits
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import Data.Char
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import Control.Arrow ((&&&))
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import Control.Concurrent
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import Control.Concurrent.MVar
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import Control.Monad.State.Strict
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import Control.Monad.Reader
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import Control.Monad.Trans
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import System.Exit
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import System.Posix.Signals
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import System.Posix.Types
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import Phi.Phi
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import qualified Phi.Types as Phi
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import qualified Phi.Panel as Panel
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import qualified Phi.Widget as Widget
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import Phi.Widget hiding (Display, handleMessage)
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import Phi.X11.Atoms
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import qualified Phi.Bindings.Util as Util
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data XConfig = XConfig { phiXScreenInfo :: !(Display -> IO [Rectangle])
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}
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data PhiState w s c = (Widget.Widget w s c) => PhiState { phiRootImage :: !Surface
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, phiPanels :: ![PanelState w s c]
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, phiRepaint :: !Bool
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, phiShutdown :: !Bool
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, phiShutdownHold :: !Int
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, phiWidgetState :: !s
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}
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data PanelState w s c = (Widget.Widget w s c) => PanelState { panelWindow :: !Window
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, panelPixmap :: !Pixmap
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, panelArea :: !Rectangle
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, panelScreenArea :: !Rectangle
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, panelWidgetCache :: !c
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}
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data PhiConfig w s c = PhiConfig { phiPhi :: !Phi
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, phiPanelConfig :: !Panel.PanelConfig
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, phiXConfig :: !XConfig
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, phiAtoms :: !Atoms
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, phiWidget :: !w
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}
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newtype PhiReader w s c a = PhiReader (ReaderT (PhiConfig w s c) IO a)
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deriving (Monad, MonadReader (PhiConfig w s c), MonadIO)
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runPhiReader :: PhiConfig w s c -> PhiReader w s c a -> IO a
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runPhiReader config (PhiReader a) = runReaderT a config
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newtype PhiX w s c a = PhiX (StateT (PhiState w s c) (PhiReader w s c) a)
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deriving (Monad, MonadState (PhiState w s c), MonadReader (PhiConfig w s c), MonadIO)
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runPhiX :: PhiConfig w s c -> PhiState w s c -> PhiX w s c a -> IO (a, PhiState w s c)
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runPhiX config st (PhiX a) = runPhiReader config $ runStateT a st
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defaultXConfig = XConfig { phiXScreenInfo = getScreenInfo
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}
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runPhi :: (Widget.Widget w s c) => XConfig -> Panel.PanelConfig -> w -> IO ()
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runPhi xconfig config widget = do
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xSetErrorHandler
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phi <- initPhi
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installHandler sigTERM (termHandler phi) Nothing
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installHandler sigINT (termHandler phi) Nothing
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installHandler sigQUIT (termHandler phi) Nothing
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disp <- openDisplay []
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atoms <- initAtoms disp
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selectInput disp (defaultRootWindow disp) $ propertyChangeMask.|.structureNotifyMask
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bg <- createImageSurface FormatRGB24 1 1
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dispmvar <- newMVar disp
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screens <- liftIO $ phiXScreenInfo xconfig disp
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panelWindows <- mapM (createPanelWindow disp config) screens
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let dispvar = Widget.Display dispmvar atoms
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widget' = widget <~> separator 0 (if weight widget > 0 then 0 else 1)
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screenPanels = zip screens panelWindows
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initialState <- Widget.initWidget widget' phi dispvar screenPanels
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runPhiX
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PhiConfig { phiPhi = phi
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, phiXConfig = xconfig
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, phiPanelConfig = config
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, phiAtoms = atoms
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, phiWidget = widget'
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}
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PhiState { phiRootImage = bg
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, phiPanels = []
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, phiRepaint = True
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, phiShutdown = False
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, phiShutdownHold = 0
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, phiWidgetState = initialState
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} $ do
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updateRootImage disp
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Widget.withDisplay dispvar $ \disp -> do
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panels <- mapM (\(screen, window) -> createPanel disp window screen) screenPanels
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forM_ panels $ \panel -> do
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setPanelProperties disp panel
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liftIO $ mapWindow disp (panelWindow panel)
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modify $ \state -> state { phiPanels = panels }
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liftIO $ forkIO $ receiveEvents phi dispvar
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forever $ do
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available <- messageAvailable phi
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unless available $ do
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repaint <- gets phiRepaint
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when repaint $ do
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updatePanels dispvar
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modify $ \state -> state {phiRepaint = False}
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message <- receiveMessage phi
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handleMessage dispvar message
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case (fromMessage message) of
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Just Shutdown ->
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modify $ \state -> state { phiShutdown = True }
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Just HoldShutdown ->
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modify $ \state -> state { phiShutdownHold = phiShutdownHold state + 1 }
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Just ReleaseShutdown ->
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modify $ \state -> state { phiShutdownHold = phiShutdownHold state - 1 }
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_ ->
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return ()
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shutdown <- gets phiShutdown
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shutdownHold <- gets phiShutdownHold
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when (shutdown && (shutdownHold == 0)) $
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liftIO $ exitSuccess
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return ()
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termHandler :: Phi -> Handler
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termHandler phi = Catch $ sendMessage phi Shutdown
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handleMessage :: (Widget w s c) => Widget.Display -> Message -> PhiX w s c ()
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handleMessage dispvar m = do
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w <- asks phiWidget
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modify $ \state -> state {phiWidgetState = Widget.handleMessage w (phiWidgetState state) m}
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case (fromMessage m) of
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Just Repaint ->
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modify $ \state -> state {phiRepaint = True}
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_ ->
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case (fromMessage m) of
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Just event ->
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Widget.withDisplay dispvar $ flip handleEvent event
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_ ->
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return ()
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handleEvent :: (Widget w s c) => Display -> Event -> PhiX w s c ()
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handleEvent disp PropertyEvent { ev_atom = atom } = do
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phi <- asks phiPhi
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atoms <- asks phiAtoms
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panels <- gets phiPanels
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when (atom == atom_XROOTPMAP_ID atoms || atom == atom_XROOTMAP_ID atoms) $ do
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updateRootImage disp
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sendMessage phi ResetBackground
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sendMessage phi Repaint
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handleEvent disp ConfigureEvent { ev_window = window } | window == defaultRootWindow disp = do
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phi <- asks phiPhi
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xconfig <- asks phiXConfig
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config <- asks phiPanelConfig
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panels <- gets phiPanels
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let screens = map panelScreenArea panels
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screens' <- liftIO $ phiXScreenInfo xconfig disp
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when (screens /= screens') $ do
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liftIO $ do
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mapM (freePixmap disp . panelPixmap) panels
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mapM_ (destroyWindow disp . panelWindow) $ drop (length screens') panels
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let panelsScreens = zip screens' $ map Just panels ++ repeat Nothing
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panels' <- forM panelsScreens $ \(screen, mpanel) ->
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case mpanel of
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Just panel -> do
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let rect = panelBounds config screen
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win = panelWindow panel
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liftIO $ withRectangle rect $ moveResizeWindow disp win
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panel' <- createPanel disp win screen
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setPanelProperties disp panel'
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return panel'
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Nothing -> do
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win <- liftIO $ createPanelWindow disp config screen
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panel <- createPanel disp win screen
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setPanelProperties disp panel
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liftIO $ mapWindow disp $ panelWindow panel
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return panel
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modify $ \state -> state { phiPanels = panels' }
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sendMessage phi $ UpdateScreens $ map (panelScreenArea &&& panelWindow) panels'
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sendMessage phi Repaint
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handleEvent _ _ = return ()
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receiveEvents :: Phi -> Widget.Display -> IO ()
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receiveEvents phi dispvar = do
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connection <- Widget.withDisplay dispvar $ return . Fd . connectionNumber
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allocaXEvent $ \xevent -> forever $ do
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handled <- Widget.withDisplay dispvar $ \disp -> do
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pend <- pending disp
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if pend /= 0 then
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do
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liftIO $ nextEvent disp xevent
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event <- liftIO $ Util.getEvent disp xevent
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sendMessage phi event
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return True
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else return False
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--when (not handled) $ threadWaitRead connection
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when (not handled) $ threadDelay 40000
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updatePanels :: (Widget w s c) => Widget.Display -> PhiX w s c ()
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updatePanels dispvar = do
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w <- asks phiWidget
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s <- gets phiWidgetState
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rootImage <- gets phiRootImage
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panels <- gets phiPanels
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panels' <- forM panels $ \panel -> do
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let pixmap = panelPixmap panel
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area = panelArea panel
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(panelSurfaces, cache') <- liftIO $ flip runStateT (panelWidgetCache panel) $
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(withDimension area $ Widget.render w s 0 0) (panelScreenArea panel)
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Widget.withDisplay dispvar $ \disp -> do
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let screen = defaultScreen disp
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visual = defaultVisual disp screen
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xbuffer <- liftIO $ withDimension area $ Util.createXlibSurface disp pixmap visual
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liftIO $ (withDimension area $ withSimilarSurface xbuffer ContentColor) $ \buffer -> do
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renderWith buffer $ do
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save
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translate (-(fromIntegral $ rect_x area)) (-(fromIntegral $ rect_y area))
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withPatternForSurface rootImage $ \pattern -> do
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patternSetExtend pattern ExtendRepeat
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setSource pattern
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paint
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restore
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forM_ panelSurfaces $ \(updated, SurfaceSlice x surface) -> do
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save
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translate (fromIntegral x) 0
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withPatternForSurface surface setSource
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paint
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restore
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renderWith xbuffer $ do
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withPatternForSurface buffer setSource
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paint
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surfaceFinish xbuffer
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-- update window
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liftIO $ do
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(withDimension area $ clearArea disp (panelWindow panel) 0 0) True
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sync disp False
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return $ panel { panelWidgetCache = cache' }
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modify $ \state -> state { phiPanels = panels' }
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updateRootImage :: Display -> PhiX w s c ()
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updateRootImage disp = do
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atoms <- asks phiAtoms
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let screen = defaultScreen disp
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visual = defaultVisual disp screen
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rootwin = defaultRootWindow disp
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pixmap <- liftM (fromIntegral . fromMaybe 0 . listToMaybe . join . catMaybes) $ forM [atom_XROOTPMAP_ID atoms, atom_XROOTMAP_ID atoms] $
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\atom -> liftIO $ getWindowProperty32 disp atom rootwin
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(pixmapWidth, pixmapHeight) <- case pixmap of
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0 -> return (1, 1)
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_ -> do
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(_, _, _, pixmapWidth, pixmapHeight, _, _) <- liftIO $ getGeometry disp pixmap
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return (pixmapWidth, pixmapHeight)
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-- update surface size
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oldBg <- gets phiRootImage
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imageWidth <- liftM fromIntegral $ imageSurfaceGetWidth oldBg
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imageHeight <- liftM fromIntegral $ imageSurfaceGetHeight oldBg
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when (imageWidth /= pixmapWidth || imageHeight /= pixmapHeight) $ do
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surfaceFinish oldBg
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newBg <- liftIO $ createImageSurface FormatRGB24 (fromIntegral pixmapWidth) (fromIntegral pixmapHeight)
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modify $ \state -> state { phiRootImage = newBg }
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bg <- gets phiRootImage
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case pixmap of
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0 -> do
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renderWith bg $ do
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setSourceRGB 0 0 0
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paint
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_ -> do
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rootSurface <- liftIO $ Util.createXlibSurface disp pixmap visual (fromIntegral pixmapWidth) (fromIntegral pixmapHeight)
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renderWith bg $ withPatternForSurface rootSurface $ \pattern -> do
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setSource pattern
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paint
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surfaceFinish rootSurface
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createPanel :: (Widget w s c) => Display -> Window -> Rectangle -> PhiX w s c (PanelState w s c)
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createPanel disp win screenRect = do
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config <- asks phiPanelConfig
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w <- asks phiWidget
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let rect = panelBounds config screenRect
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screen = defaultScreen disp
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depth = defaultDepth disp screen
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pixmap <- liftIO $ (withDimension rect $ createPixmap disp win) depth
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liftIO $ setWindowBackgroundPixmap disp win pixmap
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return PanelState { panelWindow = win
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, panelPixmap = pixmap
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, panelArea = rect
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, panelScreenArea = screenRect
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, panelWidgetCache = initCache w
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}
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createPanelWindow :: Display -> Panel.PanelConfig -> Rectangle -> IO Window
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createPanelWindow disp config screenRect = do
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let rect = panelBounds config screenRect
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screen = defaultScreen disp
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depth = defaultDepth disp screen
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visual = defaultVisual disp screen
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colormap = defaultColormap disp screen
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rootwin = defaultRootWindow disp
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mask = cWEventMask.|.cWColormap.|.cWBackPixel.|.cWBorderPixel
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allocaSetWindowAttributes $ \attr -> do
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set_colormap attr colormap
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set_background_pixel attr 0
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set_border_pixel attr 0
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set_event_mask attr exposureMask
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withRectangle rect (createWindow disp rootwin) 0 depth inputOutput visual mask attr
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setPanelProperties :: Display -> PanelState w s c -> PhiX w s c ()
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setPanelProperties disp panel = do
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atoms <- asks phiAtoms
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liftIO $ do
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storeName disp (panelWindow panel) "Phi"
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changeProperty8 disp (panelWindow panel) (atom_NET_WM_NAME atoms) (atomUTF8_STRING atoms) propModeReplace $ map (fromIntegral . ord) "Phi"
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changeProperty32 disp (panelWindow panel) (atom_NET_WM_WINDOW_TYPE atoms) aTOM propModeReplace [fromIntegral (atom_NET_WM_WINDOW_TYPE_DOCK atoms)]
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changeProperty32 disp (panelWindow panel) (atom_NET_WM_DESKTOP atoms) cARDINAL propModeReplace [0xFFFFFFFF]
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changeProperty32 disp (panelWindow panel) (atom_NET_WM_STATE atoms) aTOM propModeReplace [ fromIntegral (atom_NET_WM_STATE_SKIP_PAGER atoms)
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, fromIntegral (atom_NET_WM_STATE_SKIP_TASKBAR atoms)
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, fromIntegral (atom_NET_WM_STATE_STICKY atoms)
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, fromIntegral (atom_NET_WM_STATE_BELOW atoms)
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]
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setWMHints disp (panelWindow panel) WMHints { wmh_flags = fromIntegral inputHintBit
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, wmh_input = False
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, wmh_initial_state = 0
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, wmh_icon_pixmap = 0
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, wmh_icon_window = 0
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, wmh_icon_x = 0
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, wmh_icon_y = 0
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, wmh_icon_mask = 0
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, wmh_window_group = 0
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}
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changeProperty32 disp (panelWindow panel) (atom_MOTIF_WM_HINTS atoms) (atom_MOTIF_WM_HINTS atoms) propModeReplace [ 2, 0, 0, 0, 0 ]
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Util.setClassHint disp (panelWindow panel) ClassHint { resName = "phi", resClass = "Phi" }
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setStruts disp panel
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setStruts :: Display -> PanelState w s c -> PhiX w s c ()
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setStruts disp panel = do
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atoms <- asks phiAtoms
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config <- asks phiPanelConfig
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let rootwin = defaultRootWindow disp
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position = Panel.panelPosition config
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area = panelArea panel
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(_, _, _, _, rootHeight, _, _) <- liftIO $ getGeometry disp rootwin
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let struts = [makeStruts i | i <- [0..11]]
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where
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makeTopStruts 2 = (fromIntegral $ rect_y area) + (fromIntegral $ rect_height area)
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makeTopStruts 8 = (fromIntegral $ rect_x area)
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makeTopStruts 9 = (fromIntegral $ rect_x area) + (fromIntegral $ rect_width area) - 1
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makeTopStruts _ = 0
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makeBottomStruts 3 = (fromIntegral rootHeight) - (fromIntegral $ rect_y area)
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makeBottomStruts 10 = (fromIntegral $ rect_x area)
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makeBottomStruts 11 = (fromIntegral $ rect_x area) + (fromIntegral $ rect_width area) - 1
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makeBottomStruts _ = 0
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makeStruts = case position of
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Phi.Top -> makeTopStruts
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Phi.Bottom -> makeBottomStruts
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liftIO $ do
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changeProperty32 disp (panelWindow panel) (atom_NET_WM_STRUT atoms) cARDINAL propModeReplace $ take 4 struts
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changeProperty32 disp (panelWindow panel) (atom_NET_WM_STRUT_PARTIAL atoms) cARDINAL propModeReplace struts
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panelBounds :: Panel.PanelConfig -> Rectangle -> Rectangle
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panelBounds config screenBounds = case Panel.panelPosition config of
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Phi.Top -> screenBounds { rect_height = fromIntegral $ Panel.panelSize config }
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Phi.Bottom -> screenBounds { rect_height = fromIntegral $ Panel.panelSize config,
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rect_y = (rect_y screenBounds) + (fromIntegral $ rect_height screenBounds) - (fromIntegral $ Panel.panelSize config) }
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withRectangle :: (Num x, Num y, Num w, Num h) => Rectangle -> (x -> y -> w -> h -> a) -> a
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withRectangle r = withDimension r . withPosition r
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withPosition :: (Num x, Num y) => Rectangle -> (x -> y -> a) -> a
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withPosition r f = f (fromIntegral $ rect_x r) (fromIntegral $ rect_y r)
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withDimension :: (Num w, Num h) => Rectangle -> (w -> h -> a) -> a
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withDimension r f = f (fromIntegral $ rect_width r) (fromIntegral $ rect_height r)
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