117 lines
3 KiB
Haskell
117 lines
3 KiB
Haskell
{-# LANGUAGE RecordWildCards #-}
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import Affection
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import qualified SDL
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import qualified SDL.Raw as Raw
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import qualified GEGL as G
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import qualified BABL as B
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import qualified Data.Map.Strict as M
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import Control.Monad (when)
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import Foreign.Storable (peek)
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import Foreign.C.Types (CInt(..))
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import Debug.Trace
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-- main :: IO ()
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-- main = withAllAffection $
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-- withDefaultWindow "test" $ do
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-- changeColor $ RGBA 255 255 255 255
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-- clear
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-- present
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-- liftIO $ delaySec 2
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main :: IO ()
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main = do
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conf <- return $ AffectionConfig
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{ initComponents = All
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, windowTitle = "Affection: example00"
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, windowConfig = SDL.defaultWindow
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, preLoop = return ()
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, eventLoop = handle
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, updateLoop = update
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, drawLoop = draw
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, loadState = load
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, cleanUp = clean
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}
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withAffection conf
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data UserData = UserData
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{ nodeGraph :: M.Map String G.GeglNode
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}
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load :: SDL.Surface -> IO UserData
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load _ = do
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traceM "loading"
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root <- G.gegl_node_new
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traceM "new root node"
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checkerboard <- G.gegl_node_new_child root $ G.checkerboardOperation $
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props $ do
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prop "color1" $ G.RGBA 0.4 0.4 0.4 1
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prop "color2" $ G.RGBA 0.6 0.6 0.6 1
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traceM "checkerboard"
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over <- G.gegl_node_new_child root G.defaultOverOperation
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traceM "over"
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text <- G.gegl_node_new_child root $ G.textOperation $
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props $ do
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prop "string" ("Hello world!"::String)
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prop "color" $ G.RGBA 0 0 1 0.5
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prop "size" (40::Int)
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traceM "text"
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G.gegl_node_link checkerboard over
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G.gegl_node_connect_to text "output" over "aux"
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traceM "connections made"
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myMap <- return $ M.fromList
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[ ("root" , root)
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, ("over" , over)
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, ("checkerboard", checkerboard)
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, ("text" , text)
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]
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traceM "loading complete"
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return $ UserData
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{ nodeGraph = myMap
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}
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draw :: Affection UserData ()
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draw = do
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traceM "drawing"
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AffectionData{..} <- get
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let UserData{..} = userState
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liftIO $ SDL.lockSurface drawSurface
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pixels <- liftIO $ SDL.surfacePixels drawSurface
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let SDL.Surface rawSurfacePtr _ = drawSurface
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rawSurface <- liftIO $ peek rawSurfacePtr
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pixelFormat <- liftIO $ peek $ Raw.surfaceFormat rawSurface
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format <- liftIO $ (B.babl_format $ B.PixelFormat B.RGBA B.CFu8)
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SDL.V2 (CInt rw) (CInt rh) <- SDL.surfaceDimensions drawSurface
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let (w, h) = (fromIntegral rw, fromIntegral rh)
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liftIO $ G.gegl_node_blit
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(nodeGraph M.! "over" :: G.GeglNode)
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1
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(G.GeglRectangle 0 0 w h)
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format
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pixels
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(fromIntegral (Raw.pixelFormatBytesPerPixel pixelFormat) * w)
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[G.GeglBlitDefault]
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liftIO $ SDL.unlockSurface drawSurface
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liftIO $ SDL.updateWindowSurface drawWindow
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handle :: SDL.EventPayload -> Affection UserData ()
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handle = const $ return ()
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update :: Affection UserData ()
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update = do
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traceM "updating"
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ad <- get
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ud@UserData{..} <- getAffection
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sec <- getTick
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traceM $ (show $ 1 / sec) ++ " FPS"
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when (elapsedTime ad > 5) $
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put $ ad
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{ quitEvent = True
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}
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clean :: UserData -> IO ()
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clean _ = return ()
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