From fbdbd46e0d75f68e9da179fd08e045632c7faeb0 Mon Sep 17 00:00:00 2001
From: Matthijs Kooijman <matthijs@stdin.nl>
Date: Sun, 23 Aug 2009 18:06:09 +0200
Subject: [PATCH] Make runGUI create a window again.

Events are not yet handled, backbuffering for drawing operations isn't
supported yet either.
---
 FPPrac.hs | 33 ++++++++++++++++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

diff --git a/FPPrac.hs b/FPPrac.hs
index ddf421e..c8512d7 100644
--- a/FPPrac.hs
+++ b/FPPrac.hs
@@ -9,6 +9,11 @@ module FPPrac (
 ) where
 
 import qualified Graphics.UI.Gtk as Gtk
+import Graphics.UI.Gtk (AttrOp(..)) -- For the := constructor
+import qualified Graphics.Rendering.Cairo as Cairo
+import qualified Graphics.UI.Gtk.Gdk.EventM as EventM
+
+import Control.Monad.Trans -- for liftIO
 import Data.IORef
 import Control.Applicative
 import Control.Monad
@@ -133,7 +138,33 @@ runTina Main {..} = do
 	runGUI {-(sz windowWidth windowHeight) -}state
 
 runGUI :: {-Size ->-} IState -> IO ()
-runGUI s = do return ()
+runGUI s = do
+	-- Init GTK.
+	Gtk.initGUI
+	
+	-- Create a window, which will make the mainloop terminated when
+	-- it is closed.
+	window <- Gtk.windowNew
+	Gtk.set window [ Gtk.containerBorderWidth := 10
+	            , Gtk.windowTitle := "FP Practicum" ]
+	Gtk.onDestroy window Gtk.mainQuit
+	
+	Gtk.on window Gtk.exposeEvent $ do
+		--(w,h) <- Gtk.eventWindowSize
+		dw <- EventM.eventWindow
+		liftIO $ do
+		Gtk.renderWithDrawable dw $ do
+			--translate (w/2) (h/2)
+			--scale (w/drawSide) (h/drawSide)
+			 Cairo.arc 100 100 50 0 (2*pi) 
+			 Cairo.fill
+		return True
+
+	-- Show the window and start the Gtk mainloop.
+	Gtk.widgetShowAll window
+	Gtk.mainGUI
+
+
 {-
 runGUI s IS {..} = do
 	sFrame <- frame
-- 
2.30.2