[sdl_omap.git] / src / events / SDL_quit.c

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2009 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);
}
Commit	Line	Data
e14743d1	1	/*
	2	SDL - Simple DirectMedia Layer
	3	Copyright (C) 1997-2009 Sam Lantinga
	4
	5	This library is free software; you can redistribute it and/or
	6	modify it under the terms of the GNU Lesser General Public
	7	License as published by the Free Software Foundation; either
	8	version 2.1 of the License, or (at your option) any later version.
	9
	10	This library is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	Lesser General Public License for more details.
	14
	15	You should have received a copy of the GNU Lesser General Public
	16	License along with this library; if not, write to the Free Software
	17	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	18
	19	Sam Lantinga
	20	slouken@libsdl.org
	21	*/
	22	#include "SDL_config.h"
	23
	24	/* General quit handling code for SDL */
	25
	26	#ifdef HAVE_SIGNAL_H
	27	#include <signal.h>
	28	#endif
	29
	30	#include "SDL_events.h"
	31	#include "SDL_events_c.h"
	32
	33
	34	#ifdef HAVE_SIGNAL_H
	35	static void SDL_HandleSIG(int sig)
	36	{
	37	/* Reset the signal handler */
	38	signal(sig, SDL_HandleSIG);
	39
	40	/* Signal a quit interrupt */
	41	SDL_PrivateQuit();
	42	}
	43	#endif /* HAVE_SIGNAL_H */
	44
	45	/* Public functions */
	46	int SDL_QuitInit(void)
	47	{
	48	#ifdef HAVE_SIGNAL_H
	49	void (*ohandler)(int);
	50
	51	/* Both SIGINT and SIGTERM are translated into quit interrupts */
	52	ohandler = signal(SIGINT, SDL_HandleSIG);
	53	if ( ohandler != SIG_DFL )
	54	signal(SIGINT, ohandler);
	55	ohandler = signal(SIGTERM, SDL_HandleSIG);
	56	if ( ohandler != SIG_DFL )
	57	signal(SIGTERM, ohandler);
	58	#endif /* HAVE_SIGNAL_H */
	59
	60	/* That's it! */
	61	return(0);
	62	}
	63	void SDL_QuitQuit(void)
	64	{
65	#ifdef HAVE_SIGNAL_H
66	void (*ohandler)(int);
67
68	ohandler = signal(SIGINT, SIG_DFL);
69	if ( ohandler != SDL_HandleSIG )
70	signal(SIGINT, ohandler);
71	ohandler = signal(SIGTERM, SIG_DFL);
72	if ( ohandler != SDL_HandleSIG )
73	signal(SIGTERM, ohandler);
74	#endif /* HAVE_SIGNAL_H */
75	}
76
77	/* This function returns 1 if it's okay to close the application window */
78	int SDL_PrivateQuit(void)
79	{
80	int posted;
81
82	posted = 0;
83	if ( SDL_ProcessEvents[SDL_QUIT] == SDL_ENABLE ) {
84	SDL_Event event;
85	event.type = SDL_QUIT;
86	if ( (SDL_EventOK == NULL) \|\| (*SDL_EventOK)(&event) ) {
87	posted = 1;
88	SDL_PushEvent(&event);
89	}
90	}
91	return(posted);
92	}