318 lines
12 KiB
Haskell
318 lines
12 KiB
Haskell
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
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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.Concurrent
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import Control.Concurrent.MVar
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import Control.Monad.State
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import Control.Monad.Reader
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import Control.Monad.Trans
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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.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 = PhiState { phiPhi :: !Phi
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, phiRootPixmap :: !Pixmap
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, phiPanels :: ![PanelState]
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}
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data PanelState = PanelState { panelWindow :: !Window
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, panelGC :: !GC
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, panelPixmap :: !Pixmap
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, panelSurface :: !Surface
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, panelArea :: !Rectangle
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, panelScreenArea :: !Rectangle
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, panelWidgetStates :: ![Widget.WidgetState]
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}
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data PhiConfig = PhiConfig { phiPanelConfig :: !Panel.PanelConfig
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, phiXConfig :: !XConfig
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, phiAtoms :: !Atoms
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}
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newtype PhiReader a = PhiReader (ReaderT PhiConfig IO a)
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deriving (Monad, MonadReader PhiConfig, MonadIO)
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runPhiReader :: PhiConfig -> PhiReader a -> IO a
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runPhiReader config (PhiReader a) = runReaderT a config
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newtype PhiX a = PhiX (StateT PhiState PhiReader a)
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deriving (Monad, MonadState PhiState, MonadReader PhiConfig, MonadIO)
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runPhiX :: PhiConfig -> PhiState -> PhiX a -> IO (a, PhiState)
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runPhiX config st (PhiX a) = runPhiReader config $ runStateT a st
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withMVarX :: MVar a -> (a -> PhiX b) -> PhiX b
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withMVarX m f = do
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a <- liftIO $ takeMVar m
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b <- f a
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liftIO $ putMVar m a
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return b
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defaultXConfig = XConfig { phiXScreenInfo = getScreenInfo
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}
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runPhi :: XConfig -> Panel.PanelConfig -> [Widget.Widget] -> IO ()
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runPhi xconfig config widgets = do
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phi <- initPhi
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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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runPhiX PhiConfig { phiXConfig = xconfig, phiPanelConfig = config, phiAtoms = atoms } PhiState { phiPhi = phi, phiRootPixmap = 0, phiPanels = [] } $ do
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updateRootPixmap disp
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screens <- liftIO $ phiXScreenInfo xconfig disp
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dispvar <- liftIO $ newEmptyMVar
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widgetStates <- liftIO $ mapM (Widget.createWidgetState phi dispvar) widgets
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panels <- mapM (createPanel disp widgetStates) screens
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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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updatePanels disp True
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liftIO $ putMVar dispvar disp
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liftIO $ forkIO $ receiveEvents phi dispvar
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forever $ do
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message <- liftIO $ receiveMessage phi
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handleMessage dispvar message
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return ()
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handlePanel :: Message -> PanelState -> PanelState
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handlePanel message panel@PanelState {panelWidgetStates = widgets} = panel {panelWidgetStates = widgets'}
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where
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widgets' = Widget.handleMessageWidgets message widgets
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handleMessage :: MVar Display -> Message -> PhiX ()
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handleMessage dispvar m = do
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modify $ \state@PhiState {phiPanels = panels} -> state {phiPanels = map (handlePanel m) panels}
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case (fromMessage m) of
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Just Repaint -> withMVarX dispvar $ \disp ->
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updatePanels disp True
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_ ->
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case (fromMessage m) of
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Just ExposeEvent {} -> withMVarX dispvar $ \disp ->
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updatePanels disp False
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Just event@PropertyEvent {} -> withMVarX dispvar $ \disp ->
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handlePropertyUpdate disp event
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_ ->
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return ()
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receiveEvents :: Phi -> MVar Display -> IO ()
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receiveEvents phi dispvar = do
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connection <- withMVar dispvar $ return . Fd . connectionNumber
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forever $ allocaXEvent $ \xevent -> do
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handled <- withMVar 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 $ getEvent 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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updatePanels :: Display -> Bool -> PhiX ()
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updatePanels disp redraw = do
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rootPixmap <- gets phiRootPixmap
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panels <- gets phiPanels
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panels' <- forM panels $ \panel -> do
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newPanel <- if not redraw then return panel else do
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let surface = panelSurface panel
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area = panelArea panel
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layoutedWidgets = withDimension area $ Widget.layoutWidgets (panelWidgetStates panel) 0 0
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panel' = panel { panelWidgetStates = layoutedWidgets }
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-- draw background
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liftIO $ withRectangle (panelArea panel) (copyArea disp rootPixmap (panelPixmap panel) (panelGC panel)) 0 0
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surfaceMarkDirty surface
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renderWith surface $ Widget.renderWidgets layoutedWidgets
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surfaceFlush surface
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return panel'
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-- copy pixmap to window
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liftIO $ withDimension (panelArea panel) (copyArea disp (panelPixmap panel) (panelWindow panel) (panelGC panel) 0 0) 0 0
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return newPanel
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modify $ \state -> state { phiPanels = panels' }
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handlePropertyUpdate :: Display -> Event -> PhiX ()
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handlePropertyUpdate disp PropertyEvent { ev_atom = atom } = do
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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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updateRootPixmap disp
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updatePanels disp True
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updateRootPixmap :: Display -> PhiX ()
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updateRootPixmap disp = do
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atoms <- asks phiAtoms
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let screen = defaultScreen disp
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rootwin = defaultRootWindow disp
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pixmap <- liftM (fromMaybe 0 . listToMaybe . join . catMaybes) $ forM [atom_XROOTPMAP_ID atoms, atom_XROOTMAP_ID atoms] $
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\atom -> liftIO $ rawGetWindowProperty 32 disp atom rootwin
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modify $ \state -> state { phiRootPixmap = pixmap }
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createPanel :: Display -> [Widget.WidgetState] -> Rectangle -> PhiX PanelState
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createPanel disp widgets screenRect = do
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phi <- gets phiPhi
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config <- asks phiPanelConfig
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let rect = panelBounds config screenRect
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win <- createPanelWindow disp rect
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gc <- liftIO $ createGC disp win
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let screen = defaultScreen disp
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depth = defaultDepth disp screen
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visual = defaultVisual disp screen
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pixmap <- liftIO $ withDimension rect (createPixmap disp win) depth
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surface <- liftIO $ withDimension rect $ Util.createXlibSurface disp pixmap visual
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return PanelState { panelWindow = win
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, panelGC = gc
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, panelPixmap = pixmap
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, panelSurface = surface
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, panelArea = rect
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, panelScreenArea = screenRect
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, panelWidgetStates = widgets
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}
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createPanelWindow :: Display -> Rectangle -> PhiX Window
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createPanelWindow disp rect = do
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let 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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liftIO $ 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 -> PhiX ()
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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 -> PhiX ()
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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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