/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2006 Sam Lantinga

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Lesser General Public

    License as published by the Free Software Foundation; either

    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public

    License along with this library; if not, write to the Free Software

    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga

    slouken@libsdl.org

*/

#include "SDL_config.h"

/* General quit handling code for SDL */

#ifdef HAVE_SIGNAL_H

#include <signal.h>

#endif

#include "SDL_events.h"

#include "SDL_events_c.h"

#ifdef HAVE_SIGNAL_H

static void SDL_HandleSIG(int sig)

{

	/* Reset the signal handler */

	signal(sig, SDL_HandleSIG);

	/* Signal a quit interrupt */

	SDL_PrivateQuit();

}

#endif /* HAVE_SIGNAL_H */

/* Public functions */

int SDL_QuitInit(void)

{

#ifdef HAVE_SIGNAL_H

	void (*ohandler)(int);

	/* Both SIGINT and SIGTERM are translated into quit interrupts */

	ohandler = signal(SIGINT, SDL_HandleSIG);

	if ( ohandler != SIG_DFL )

		signal(SIGINT, ohandler);

	ohandler = signal(SIGTERM, SDL_HandleSIG);

	if ( ohandler != SIG_DFL )

		signal(SIGTERM, ohandler);

#endif /* HAVE_SIGNAL_H */

	/* That's it! */

	return(0);

}

void SDL_QuitQuit(void)

{

#ifdef HAVE_SIGNAL_H

	void (*ohandler)(int);

	ohandler = signal(SIGINT, SIG_DFL);

	if ( ohandler != SDL_HandleSIG )

		signal(SIGINT, ohandler);

	ohandler = signal(SIGTERM, SIG_DFL);

	if ( ohandler != SDL_HandleSIG )

		signal(SIGTERM, ohandler);

#endif /* HAVE_SIGNAL_H */

}

/* This function returns 1 if it's okay to close the application window */

int SDL_PrivateQuit(void)

{

	int posted;

	posted = 0;

	if ( SDL_ProcessEvents[SDL_QUIT] == SDL_ENABLE ) {

		SDL_Event event;

		event.type = SDL_QUIT;

		if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {

			posted = 1;

			SDL_PushEvent(&event);

		}

	}

	return(posted);

}