{-# LANGUAGE OverloadedLabels #-}
{-# LANGUAGE OverloadedStrings #-}
module Main where

import GI.Gtk as Gtk hiding (main)
import qualified GI.Gtk as Gtk
import GI.GObject.Functions
import GI.GObject.Flags
import Data.GI.Base.GType

import Foreign.Ptr

-- import Triangle as R
-- import Lambda2 as R
-- import Draw as R
import LambdaHello as R


main = do
    _ <- Gtk.init Nothing

    let mkChild = do
            gl <- gLAreaNew
            st <- R.initState
            _ <- on gl #realize       $ R.realize   st gl
            _ <- on gl #unrealize     $ R.unrealize st gl
            _ <- on gl #render        $ R.render    st gl
            typ <- gobjectType gl
            ccSig <- signalLookup "create-context" typ
            ccid <- signalHandlerFind gl [SignalMatchTypeId] ccSig
                0 -- detail
                Nothing -- closure
                nullPtr -- func
                nullPtr -- data
            ccqry <- signalQuery (fromIntegral ccid)
            print (gtypeToCGType typ,ccSig,ccid {-, ccqry -}) -- (66419360,233,0)
            _ <- on gl #createContext $ R.createContext st gl
            ccid <- signalHandlerFind gl [SignalMatchTypeId] ccSig
                0 -- detail
                Nothing -- closure
                nullPtr -- func
                nullPtr -- data
            print (gtypeToCGType typ,ccSig,ccid {-, ccqry -}) -- (77669760,233,47)
            -- signalHandlerDisconnect gl ccid
            return gl

    window <- do
        w <- windowNew WindowTypeToplevel
        windowSetDefaultSize    w 1000 1000
        windowSetTitle          w "GL Area"
        containerSetBorderWidth w 10
        _ <- on w #deleteEvent $ \_ -> mainQuit >> return True
        child <- mkChild
        containerAdd w child
        return w

    widgetShowAll window
    Gtk.main