pituicat/src/Affection/Subsystems/AffectionWindow.hs

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{-# LANGUAGE MultiParamTypeClasses #-}
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{-# LANGUAGE RankNTypes #-}
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module Affection.Subsystems.AffectionWindow where
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import Affection.Types
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import Affection.MessageBus
import Affection.Subsystems.Class
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import Control.Concurrent.STM as STM
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import Control.Monad.IO.Class (liftIO)
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import qualified SDL
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data AffectionWindow sd = AffectionWindow
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{ windowSubscribers :: forall sd. TVar [(UUID, WindowMessage -> Affection sd ())]
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}
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instance Participant (AffectionWindow sd) WindowMessage where
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partSubscribe p funct = do
uuid <- genUUID
liftIO $ atomically $ modifyTVar' (windowSubscribers p) ((uuid, funct) :)
return uuid
partUnSubscribe p uuid =
liftIO $ atomically $ modifyTVar' (windowSubscribers p)
(filter (\(u, _) -> u /= uuid))
partSubscribers p = do
subTups <- liftIO $ readTVarIO $ windowSubscribers p
return $ map snd subTups
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instance SDLSubsystem (AffectionWindow sd) WindowMessage where
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consumeSDLEvents aw evs = doConsume evs
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where
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doConsume [] = return []
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doConsume (e:es) = case SDL.eventPayload e of
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SDL.WindowShownEvent (SDL.WindowShownEventData window) -> do
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partEmit aw (MsgWindowShow (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowHiddenEvent (SDL.WindowHiddenEventData window) -> do
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partEmit aw (MsgWindowHide (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowExposedEvent (SDL.WindowExposedEventData window) -> do
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partEmit aw (MsgWindowExpose (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowMovedEvent (SDL.WindowMovedEventData window (SDL.P newPos)) -> do
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partEmit aw (MsgWindowMove (SDL.eventTimestamp e) window newPos)
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doConsume es
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SDL.WindowResizedEvent (SDL.WindowResizedEventData window newSize) -> do
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partEmit aw (MsgWindowResize (SDL.eventTimestamp e) window newSize)
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doConsume es
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SDL.WindowSizeChangedEvent (SDL.WindowSizeChangedEventData window) -> do
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partEmit aw (MsgWindowSizeChange (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowMinimizedEvent (SDL.WindowMinimizedEventData window) -> do
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partEmit aw (MsgWindowMinimize (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowMaximizedEvent (SDL.WindowMaximizedEventData window) -> do
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partEmit aw (MsgWindowMaximize (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowRestoredEvent (SDL.WindowRestoredEventData window) -> do
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partEmit aw (MsgWindowRestore (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowGainedMouseFocusEvent (SDL.WindowGainedMouseFocusEventData window) -> do
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partEmit aw (MsgWindowGainMouseFocus (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowLostMouseFocusEvent (SDL.WindowLostMouseFocusEventData window) -> do
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partEmit aw (MsgWindowLoseMouseFocus (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowGainedKeyboardFocusEvent (SDL.WindowGainedKeyboardFocusEventData window) -> do
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partEmit aw (MsgWindowGainKeyboardFocus (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowLostKeyboardFocusEvent (SDL.WindowLostKeyboardFocusEventData window) -> do
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partEmit aw (MsgWindowLoseKeyboardFocus (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowClosedEvent (SDL.WindowClosedEventData window) -> do
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partEmit aw (MsgWindowClose (SDL.eventTimestamp e) window)
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doConsume es
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_ -> fmap (e :) (doConsume es)