From 5a7df4c4cb2aad55c48d03e4e1326355cbae71fa Mon Sep 17 00:00:00 2001
From: stephena <stephena@8b62c5a3-ac7e-4cc8-8f21-d9a121418aba>
Date: Mon, 27 Mar 2006 12:52:19 +0000
Subject: [PATCH] Added state and pause change notification methods to OSystem,
 so that OSystem-derived classes can override these methods and deal with the
 changes (much more useful than having the OSystemXXX classes constantly poll
 the eventstate, etc.

git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@1067 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba
---
 stella/src/emucore/EventHandler.cxx |  8 +++++++-
 stella/src/emucore/OSystem.cxx      | 12 +++++++++++-
 stella/src/emucore/OSystem.hxx      | 14 ++++++++++++--
 3 files changed, 30 insertions(+), 4 deletions(-)

diff --git a/stella/src/emucore/EventHandler.cxx b/stella/src/emucore/EventHandler.cxx
index 9993c8a8d..c8cbaf474 100644
--- a/stella/src/emucore/EventHandler.cxx
+++ b/stella/src/emucore/EventHandler.cxx
@@ -13,7 +13,7 @@
 // See the file "license" for information on usage and redistribution of
 // this file, and for a DISCLAIMER OF ALL WARRANTIES.
 //
-// $Id: EventHandler.cxx,v 1.157 2006-03-25 00:34:17 stephena Exp $
+// $Id: EventHandler.cxx,v 1.158 2006-03-27 12:52:19 stephena Exp $
 //============================================================================
 
 #include <sstream>
@@ -222,6 +222,9 @@ void EventHandler::pause(bool status)
 
   myOSystem->frameBuffer().pause(myPauseFlag);
   myOSystem->sound().mute(myPauseFlag);
+
+  // Inform the OSystem of the change in pause
+  myOSystem->pauseChanged(myPauseFlag);
 }
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@@ -2125,6 +2128,9 @@ void EventHandler::setEventState(State state)
       myOverlay = NULL;
       break;
   }
+
+  // Inform the OSystem about the new state
+  myOSystem->stateChanged(myState);
 }
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
diff --git a/stella/src/emucore/OSystem.cxx b/stella/src/emucore/OSystem.cxx
index 1b01a280e..863cf7768 100644
--- a/stella/src/emucore/OSystem.cxx
+++ b/stella/src/emucore/OSystem.cxx
@@ -13,7 +13,7 @@
 // See the file "license" for information on usage and redistribution of
 // this file, and for a DISCLAIMER OF ALL WARRANTIES.
 //
-// $Id: OSystem.cxx,v 1.67 2006-03-25 00:34:17 stephena Exp $
+// $Id: OSystem.cxx,v 1.68 2006-03-27 12:52:19 stephena Exp $
 //============================================================================
 
 #include <cassert>
@@ -498,6 +498,16 @@ bool OSystem::joyButtonHandled(int button)
   return false;
 }
 
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+void OSystem::stateChanged(EventHandler::State state)
+{
+}
+
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+void OSystem::pauseChanged(bool status)
+{
+}
+
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 OSystem::OSystem(const OSystem& osystem)
 {
diff --git a/stella/src/emucore/OSystem.hxx b/stella/src/emucore/OSystem.hxx
index 7b99c926e..a0c8631d6 100644
--- a/stella/src/emucore/OSystem.hxx
+++ b/stella/src/emucore/OSystem.hxx
@@ -13,7 +13,7 @@
 // See the file "license" for information on usage and redistribution of
 // this file, and for a DISCLAIMER OF ALL WARRANTIES.
 //
-// $Id: OSystem.hxx,v 1.41 2006-03-25 00:34:17 stephena Exp $
+// $Id: OSystem.hxx,v 1.42 2006-03-27 12:52:19 stephena Exp $
 //============================================================================
 
 #ifndef OSYSTEM_HXX
@@ -44,7 +44,7 @@ class CheatManager;
   other objects belong.
 
   @author  Stephen Anthony
-  @version $Id: OSystem.hxx,v 1.41 2006-03-25 00:34:17 stephena Exp $
+  @version $Id: OSystem.hxx,v 1.42 2006-03-27 12:52:19 stephena Exp $
 */
 class OSystem
 {
@@ -353,6 +353,16 @@ class OSystem
     */
     virtual bool joyButtonHandled(int button);
 
+    /**
+      Informs the OSystem of a change in EventHandler state.
+    */
+    virtual void stateChanged(EventHandler::State state);
+
+    /**
+      Informs the OSystem of a change in pause status.
+    */
+    virtual void pauseChanged(bool status);
+
   protected:
     /**
       Set the base directory for all Stella files