ibis/src/Main.hs

121 lines
3.3 KiB
Haskell

{-# LANGUAGE BangPatterns #-}
module Main where
import qualified SDL
import qualified SDL.Raw.Video as SDL (glSetAttribute)
import qualified SDL.Raw.Enum as SDL
import qualified SDL.Raw.Basic as SDL
import qualified Graphics.Rendering.OpenGL as GL (clear, flush, ClearBuffer(..))
-- import qualified NanoVG as NVG
import Linear
import Options.Applicative
import Control.Monad
import Control.Monad.Loops
import Control.Concurrent.MVar
import qualified Data.Text as T
import qualified Data.Set as S
import Data.List.Split (splitOn)
import Data.Maybe
import Data.Time.Clock
import System.Exit (exitFailure)
import Foreign.C.String
import Magic
-- internal imports
import Events
import Util
import Types
main :: IO ()
main = do
opts <- execParser $ info (options <**> helper)
( fullDesc
<> progDesc "A simple PDF presenter written in Haskell using poppler and SDL2"
)
magic <- magicOpen [MagicMime]
magicLoadDefault magic
mime <- head <$> splitOn ";" <$> magicFile magic (T.unpack $ optFile opts)
-- when (mime /= "application/pdf") $ do
-- verb opts ("Not a PDF file: " ++ T.unpack (optFile opts))
-- exitFailure
SDL.initializeAll
SDL.screenSaverEnabled SDL.$= False
disps <- SDL.getDisplays
verb opts ("Number of displays detected: " ++ show (length disps))
verb opts ("Passed command line options: " ++ show opts)
-- set Render quality
SDL.HintRenderScaleQuality SDL.$= SDL.ScaleLinear
uncurry SDL.setHint =<< (,)
<$> newCString "SDL_VIDEO_MINIMIZE_ON_FOCUS_LOSS"
<*> newCString "0"
-- check render quality
renderQuality <- SDL.get SDL.HintRenderScaleQuality
when (renderQuality /= SDL.ScaleLinear) $
putErrLn "Linear texture filtering not enabled!"
verb opts "Creating window configuration(s)"
let !confs = map makeWindowConfig disps
verb opts "Creating window(s)"
wins <- zip ([0 .. ] :: [Word]) <$> mapM (uncurry SDL.createWindow) (
zip
( if length disps == 1
then
[ "Ibis - " <> optFile opts ]
else
[ "Ibis - " <> optFile opts <> " - Notes"
, "Ibis - " <> optFile opts
]
)
confs
)
when (optFullscreen opts) $
mapM_ (flip SDL.setWindowMode SDL.FullscreenDesktop . snd) wins
void $ SDL.glSetAttribute SDL.SDL_GL_SHARE_WITH_CURRENT_CONTEXT 1
verb opts "Creating OpenGL context(s)"
contexts <- zip (map fst wins) <$> mapM (SDL.glCreateContext . snd) wins
-- verb opts "Creating NanoVG context"
-- _ <- glewInit
-- nano <- NVG.createGL3 (S.fromList [NVG.Antialias, NVG.StencilStrokes])
verb opts "Initializing state"
state <- newMVar <$> (
State <$>
pure 1 <*>
pure (last $ map fst wins) <*>
getCurrentTime
)
verb opts "Displaying window(s)"
mapM_ (SDL.showWindow . snd) wins
verb opts "Entering Loop"
run <- newMVar True
whileM_ (readMVar run) (do
mapM_ (\(ident, context) -> do
let win = fromJust (lookup ident wins)
SDL.glMakeCurrent win context
mapM_ (eventHandler run) =<< SDL.pollEvents
GL.clear [GL.ColorBuffer, GL.DepthBuffer, GL.StencilBuffer]
draw state
GL.flush
SDL.glSwapWindow win
) contexts
)
verb opts "Deleting context(s)"
mapM_ (SDL.glDeleteContext . snd) contexts
verb opts "Destroying window(s)"
mapM_ (SDL.destroyWindow . snd) wins