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-- | MPlayer client demo
-- Author : Andy Stewart
-- Copyright : (c) 2010 Andy Stewart <lazycat.manatee@gmail.com>
module Main where
import Control.Applicative
import Control.Concurrent
import Control.Concurrent.STM
import Control.Monad
import Control.Monad.Trans
import Graphics.UI.Gtk
import System.Exit
import System.IO
import System.Process
import System.Environment
import Text.Printf
main :: IO ()
main = do
args <- getArgs
case args of
[filepath] -> do
initGUI
mainWindow <- windowNew
windowSetDefaultSize mainWindow 800 450
windowSetPosition mainWindow WinPosCenter
mplayer <- mplayerNew
mplayerStick mplayer (toContainer mainWindow)
mainWindow `afterShow` do
mplayerRun mplayer filepath
mainWindow `onDestroy` do
mplayerQuit mplayer
mainQuit
return ()
widgetShowAll mainWindow
mainGUI
_ -> putStrLn "Usage : mplayer file"
data MPlayer =
MPlayer {mplayerWidget :: DrawingArea
,mplayerHandle :: TVar (Maybe (Handle, Handle, Handle, ProcessHandle))}
mplayerNew :: IO MPlayer
mplayerNew =
MPlayer <$> drawingAreaNew
<*> newTVarIO Nothing
mplayerStick :: MPlayer -> Container -> IO ()
mplayerStick (MPlayer {mplayerWidget = mWidget}) container = do
widgetShowAll mWidget
container `containerAdd` mWidget
mplayerRun :: MPlayer -> FilePath -> IO ()
mplayerRun (MPlayer {mplayerWidget = mWidget
,mplayerHandle = mHandle}) filepath = do
drawWindow <- widgetGetDrawWindow mWidget -- you just can get DrawWindow after widget realized
wid <- liftM fromNativeWindowId $ drawableGetID drawWindow
handle <- runInteractiveCommand $ printf "mplayer %s -slave -wid %d" filepath (wid :: Int)
writeTVarIO mHandle (Just handle)
mplayerQuit :: MPlayer -> IO ()
mplayerQuit MPlayer {mplayerHandle = mHandle} = do
handle <- readTVarIO mHandle
case handle of
Just (inp, _, _, _) -> hPutStrLn inp "quit"
Nothing -> return ()
-- | The IO version of `writeTVar`.
writeTVarIO :: TVar a -> a -> IO ()
writeTVarIO a b = atomically $ writeTVar a b
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