affection/src/Affection/Subsystems/AffectionWindow.hs

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{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE AllowAmbiguousTypes #-}
module Affection.Subsystems.AffectionWindow where
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import Affection.MessageBus
import Affection.Subsystems.Class
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import Affection.Types
import Control.Monad.State.Class (gets)
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import Control.Monad.IO.Class (liftIO)
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import qualified SDL
data AffectionWindow m = AffectionWindow
{ windowChannel :: Channel m
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}
instance (Message m) => Participant (AffectionWindow m) m where
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partChannel = windowChannel
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partInit = do
chan <- gets messageChannel :: Affection sd m (Channel m)
nchan <- liftIO $ dupChannel $ chan
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return $ AffectionWindow
{ windowChannel = nchan
}
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partListen p = do
let chan = partChannel p
mmsg <- tryPeekChannel chan
return mmsg
partEmit p message = do
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let chan = partChannel p
writeChannel chan message
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instance Subsystem (AffectionWindow SystemMessage) SystemMessage where
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consumeEvents aw evs = doConsume evs
where
doConsume (e:es) = case SDL.eventPayload e of
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SDL.WindowShownEvent (SDL.WindowShownEventData window) -> do
partEmit aw (MsgWindowShown (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowHiddenEvent (SDL.WindowHiddenEventData window) -> do
partEmit aw (MsgWindowHidden (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 (MsgWindowExposed (SDL.eventTimestamp e) window)
doConsume es
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SDL.WindowMovedEvent (SDL.WindowMovedEventData window (SDL.P newPos)) -> do
partEmit aw (MsgWindowMoved (SDL.eventTimestamp e) window newPos)
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doConsume es
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SDL.WindowResizedEvent (SDL.WindowResizedEventData window newSize) -> do
partEmit aw (MsgWindowResized (SDL.eventTimestamp e) window newSize)
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doConsume es
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SDL.WindowSizeChangedEvent (SDL.WindowSizeChangedEventData window) -> do
partEmit aw (MsgWindowSizeChanged (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowMinimizedEvent (SDL.WindowMinimizedEventData window) -> do
partEmit aw (MsgWindowMinimized (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowMaximizedEvent (SDL.WindowMaximizedEventData window) -> do
partEmit aw (MsgWindowMaximized (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowRestoredEvent (SDL.WindowRestoredEventData window) -> do
partEmit aw (MsgWindowRestored (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowGainedMouseFocusEvent (SDL.WindowGainedMouseFocusEventData window) -> do
partEmit aw (MsgWindowGainedMouseFocus (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowLostMouseFocusEvent (SDL.WindowLostMouseFocusEventData window) -> do
partEmit aw (MsgWindowLostMouseFocus (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowGainedKeyboardFocusEvent (SDL.WindowGainedKeyboardFocusEventData window) -> do
partEmit aw (MsgWindowGainedKeyboardFocus (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowLostKeyboardFocusEvent (SDL.WindowLostKeyboardFocusEventData window) -> do
partEmit aw (MsgWindowLostKeyboardFocus (SDL.eventTimestamp e) window)
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doConsume es
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SDL.WindowClosedEvent (SDL.WindowClosedEventData window) -> do
partEmit aw (MsgWindowClosed (SDL.eventTimestamp e) window)
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doConsume es
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_ -> fmap (e :) (doConsume es)