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{-# LANGUAGE GeneralizedNewtypeDeriving #-}
module Phi.X11 ( XConfig(..)
, defaultXConfig
, initPhi
) where
import Graphics.X11.Xlib
import Graphics.X11.Xlib.Extras
import Graphics.X11.Xinerama
import Graphics.Rendering.Cairo
import Control.Monad
import Data.Maybe
import Data.Bits
import Data.Char
import Control.Monad.State
import Control.Monad.Reader
import Control.Monad.Trans
import qualified Phi.Panel as Panel
import Phi.X11.Atoms
import qualified Phi.Bindings.Util as Util
data XConfig = XConfig { phiXScreenInfo :: Display -> IO [Rectangle]
}
data PhiState = PhiState { phiRootPixmap :: Pixmap
, phiPanels :: [PanelState]
}
data PanelState = PanelState { panelWindow :: Window
, panelGC :: GC
, panelPixmap :: Pixmap
, panelSurface :: Surface
, panelArea :: Rectangle
, panelScreenArea :: Rectangle
}
data PhiConfig = PhiConfig { phiPanelConfig :: Panel.PanelConfig
, phiXConfig :: XConfig
, phiDisplay :: Display
, phiAtoms :: Atoms
}
newtype PhiReader a = PhiReader (ReaderT PhiConfig IO a)
deriving (Monad, MonadReader PhiConfig, MonadIO)
runPhiReader :: PhiConfig -> PhiReader a -> IO a
runPhiReader config (PhiReader a) = runReaderT a config
newtype Phi a = Phi (StateT PhiState PhiReader a)
deriving (Monad, MonadState PhiState, MonadReader PhiConfig, MonadIO)
runPhi :: PhiConfig -> PhiState -> Phi a -> IO (a, PhiState)
runPhi config st (Phi a) = runPhiReader config $ runStateT a st
liftIOContToPhi :: ((a -> IO (b, PhiState)) -> IO (b, PhiState)) -> (a -> Phi b) -> Phi b
liftIOContToPhi f c = do
config <- ask
state <- get
(a, state') <- liftIO $ f $ runPhi config state . c
put state'
return a
defaultXConfig = XConfig { phiXScreenInfo = getScreenInfo
}
initPhi :: XConfig -> Panel.PanelConfig -> IO ()
initPhi xconfig config = do
disp <- openDisplay []
atoms <- initAtoms disp
selectInput disp (defaultRootWindow disp) $ propertyChangeMask.|.structureNotifyMask
runPhi PhiConfig { phiXConfig = xconfig, phiPanelConfig = config, phiDisplay = disp, phiAtoms = atoms } PhiState { phiRootPixmap = 0, phiPanels = [] } $ do
updateRootPixmap
screens <- liftIO $ phiXScreenInfo xconfig disp
panels <- mapM createPanel screens
forM_ panels $ \panel -> do
setPanelProperties panel
liftIO $ mapWindow disp (panelWindow panel)
modify $ \state -> state { phiPanels = panels }
updatePanels True
liftIOContToPhi allocaXEvent $ \xevent -> do
forever $ do
liftIO $ nextEvent disp xevent
event <- liftIO $ getEvent xevent
case event of
ExposeEvent {} -> updatePanels False
PropertyEvent {} -> handlePropertyUpdate event
_ -> return ()
return ()
updatePanels :: Bool -> Phi ()
updatePanels redraw = do
disp <- asks phiDisplay
panelConfig <- asks phiPanelConfig
rootPixmap <- gets phiRootPixmap
panels <- gets phiPanels
forM_ panels $ \panel -> do
when redraw $ do
let surface = panelSurface panel
area = panelArea panel
-- draw background
liftIO $ withRectangle (panelArea panel) (copyArea disp rootPixmap (panelPixmap panel) (panelGC panel)) 0 0
surfaceMarkDirty surface
renderWith surface $ do
save
Panel.render (Panel.panelContent panelConfig) (fromIntegral $ rect_width area) (fromIntegral $ rect_height area)
restore
surfaceFlush surface
-- copy pixmap to window
liftIO $ withDimension (panelArea panel) (copyArea disp (panelPixmap panel) (panelWindow panel) (panelGC panel) 0 0) 0 0
handlePropertyUpdate :: Event -> Phi ()
handlePropertyUpdate PropertyEvent { ev_atom = atom } = do
atoms <- asks phiAtoms
panels <- gets phiPanels
when (atom == atom_XROOTPMAP_ID atoms || atom == atom_XROOTMAP_ID atoms) $ do
updateRootPixmap
updatePanels True
updateRootPixmap :: Phi ()
updateRootPixmap = do
disp <- asks phiDisplay
atoms <- asks phiAtoms
let screen = defaultScreen disp
rootwin = defaultRootWindow disp
pixmap <- liftM (fromMaybe 0 . listToMaybe . join . catMaybes) $ forM [atom_XROOTPMAP_ID atoms, atom_XROOTMAP_ID atoms] $
\atom -> liftIO $ rawGetWindowProperty 32 disp atom rootwin
modify $ \state -> state { phiRootPixmap = pixmap }
createPanel :: Rectangle -> Phi PanelState
createPanel screenRect = do
config <- asks phiPanelConfig
disp <- asks phiDisplay
let rect = panelBounds config screenRect
win <- createPanelWindow rect
gc <- liftIO $ createGC disp win
let screen = defaultScreen disp
depth = defaultDepth disp screen
visual = defaultVisual disp screen
pixmap <- liftIO $ withDimension rect (createPixmap disp win) depth
surface <- liftIO $ withDimension rect $ Util.createXlibSurface disp pixmap visual
return PanelState { panelWindow = win, panelGC = gc, panelPixmap = pixmap, panelSurface = surface, panelArea = rect, panelScreenArea = screenRect }
createPanelWindow :: Rectangle -> Phi Window
createPanelWindow rect = do
disp <- asks phiDisplay
let screen = defaultScreen disp
depth = defaultDepth disp screen
visual = defaultVisual disp screen
colormap = defaultColormap disp screen
rootwin = defaultRootWindow disp
mask = cWEventMask.|.cWColormap.|.cWBackPixel.|.cWBorderPixel
liftIO $ allocaSetWindowAttributes $ \attr -> do
set_colormap attr colormap
set_background_pixel attr 0
set_border_pixel attr 0
set_event_mask attr exposureMask
withRectangle rect (createWindow disp rootwin) 0 depth inputOutput visual mask attr
setPanelProperties :: PanelState -> Phi ()
setPanelProperties panel = do
disp <- asks phiDisplay
atoms <- asks phiAtoms
liftIO $ do
storeName disp (panelWindow panel) "Phi"
changeProperty8 disp (panelWindow panel) (atom_NET_WM_NAME atoms) (atomUTF8_STRING atoms) propModeReplace $ map (fromIntegral . ord) "Phi"
changeProperty32 disp (panelWindow panel) (atom_NET_WM_WINDOW_TYPE atoms) aTOM propModeReplace [fromIntegral (atom_NET_WM_WINDOW_TYPE_DOCK atoms)]
changeProperty32 disp (panelWindow panel) (atom_NET_WM_DESKTOP atoms) cARDINAL propModeReplace [0xFFFFFFFF]
changeProperty32 disp (panelWindow panel) (atom_NET_WM_STATE atoms) aTOM propModeReplace [ fromIntegral (atom_NET_WM_STATE_SKIP_PAGER atoms)
, fromIntegral (atom_NET_WM_STATE_SKIP_TASKBAR atoms)
, fromIntegral (atom_NET_WM_STATE_STICKY atoms)
, fromIntegral (atom_NET_WM_STATE_BELOW atoms)
]
setWMHints disp (panelWindow panel) WMHints { wmh_flags = fromIntegral inputHintBit
, wmh_input = False
, wmh_initial_state = 0
, wmh_icon_pixmap = 0
, wmh_icon_window = 0
, wmh_icon_x = 0
, wmh_icon_y = 0
, wmh_icon_mask = 0
, wmh_window_group = 0
}
changeProperty32 disp (panelWindow panel) (atom_MOTIF_WM_HINTS atoms) (atom_MOTIF_WM_HINTS atoms) propModeReplace [ 2, 0, 0, 0, 0 ]
Util.setClassHint disp (panelWindow panel) ClassHint { resName = "phi", resClass = "Phi" }
setStruts panel
setStruts :: PanelState -> Phi ()
setStruts panel = do
atoms <- asks phiAtoms
disp <- asks phiDisplay
config <- asks phiPanelConfig
let rootwin = defaultRootWindow disp
position = Panel.panelPosition config
area = panelArea panel
(_, _, _, _, rootHeight, _, _) <- liftIO $ getGeometry disp rootwin
let struts = [makeStruts i | i <- [0..11]]
where
makeTopStruts 2 = (fromIntegral $ rect_y area) + (fromIntegral $ rect_height area)
makeTopStruts 8 = (fromIntegral $ rect_x area)
makeTopStruts 9 = (fromIntegral $ rect_x area) + (fromIntegral $ rect_width area) - 1
makeTopStruts _ = 0
makeBottomStruts 3 = (fromIntegral rootHeight) - (fromIntegral $ rect_y area)
makeBottomStruts 10 = (fromIntegral $ rect_x area)
makeBottomStruts 11 = (fromIntegral $ rect_x area) + (fromIntegral $ rect_width area) - 1
makeBottomStruts _ = 0
makeStruts = case position of
Panel.Top -> makeTopStruts
Panel.Bottom -> makeBottomStruts
liftIO $ do
changeProperty32 disp (panelWindow panel) (atom_NET_WM_STRUT atoms) cARDINAL propModeReplace $ take 4 struts
changeProperty32 disp (panelWindow panel) (atom_NET_WM_STRUT_PARTIAL atoms) cARDINAL propModeReplace struts
panelBounds :: Panel.PanelConfig -> Rectangle -> Rectangle
panelBounds config screenBounds = case Panel.panelPosition config of
Panel.Top -> screenBounds { rect_height = fromIntegral $ Panel.panelSize config }
Panel.Bottom -> screenBounds { rect_height = fromIntegral $ Panel.panelSize config,
rect_y = (rect_y screenBounds) + (fromIntegral $ rect_height 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 $ rect_x r) (fromIntegral $ rect_y r)
withDimension :: (Num w, Num h) => Rectangle -> (w -> h -> a) -> a
withDimension r f = f (fromIntegral $ rect_width r) (fromIntegral $ rect_height r)
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