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|
{-# LANGUAGE TemplateHaskell #-}
import Wayland.Server
import Lens.Micro.TH (makeLenses)
import Lens.Micro.Mtl ((%=), (<%=))
import Data.Data (Typeable)
import Control.Monad (void, when)
import Control.Monad.Trans (liftIO)
import qualified Wayland.Protocols.Core.WLOutput as WLOutput
import qualified Data.Map as M
geometry :: WLOutput.Geometry
geometry = WLOutput.Geometry { WLOutput.x = 0
, WLOutput.y = 0
, WLOutput.physicalWidth = 623
, WLOutput.physicalHeight = 583
, WLOutput.subpixel = WLOutput.SubpixelNone
, WLOutput.make = "Apple"
, WLOutput.model = "Studio Display"
, WLOutput.transform = WLOutput.TransformNormal
}
data BindRequest
= BindOutput WLOutput.Handle
| UnbindOutput WLOutput.Handle
deriving (Typeable, Show)
data SignalRequest
= ReqSIGINT
deriving (Typeable, Show)
instance RequestClass SignalRequest
instance RequestClass BindRequest
data Output = Output
deriving (Show)
data State = State { _outputs :: M.Map WLOutput.Handle Output
, _interruptedCount :: Int
}
deriving (Show)
makeLenses ''State
handleRequest :: Request -> DisplayM State ()
handleRequest r
| Just (WLOutput.ReqRelease o) <- fromRequest r = destroyResource o
| Just (BindOutput o) <- fromRequest r = do outs <- outputs <%= M.insert o Output
sendEvent o $ WLOutput.EvGeometry geometry
sendEvent o $ WLOutput.EvDone
liftIO $ putStrLn $ "Created output, outputs: " ++ show outs
flushEvents
| Just (UnbindOutput o) <- fromRequest r = outputs %= M.delete o
| Just ReqSIGINT <- fromRequest r = do c <- interruptedCount <%= (+1)
liftIO $ putStrLn $ "Received SIGINT " ++ show c ++ "/3"
when (c >= 3) requestTermination
| otherwise = pure ()
main :: IO ()
main = void $ withDisplay (State M.empty 0) $ do
socket <- bindSocket
liftIO $ putStrLn $ "Listening on socket: " ++ socket
_ <- registerSignalEvent ReqSIGINT 2
output <- registerGlobal BindOutput UnbindOutput 4
processRequests handleRequest
unregisterGlobal output
|
