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comparison src/events/SDL_quit.c @ 0:74212992fb08

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Initial revision
author Sam Lantinga <slouken@lokigames.com>
date Thu, 26 Apr 2001 16:45:43 +0000
parents
children e8157fcb3114
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-1:000000000000 0:74212992fb08
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 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 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public
16 License along with this library; if not, write to the Free
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
19 Sam Lantinga
20 slouken@devolution.com
21 */
22
23 #ifdef SAVE_RCSID
24 static char rcsid =
25 "@(#) $Id$";
26 #endif
27
28 /* General quit handling code for SDL */
29
30 #include <stdio.h>
31 #ifndef NO_SIGNAL_H
32 #include <signal.h>
33 #endif
34
35 #include "SDL_events.h"
36 #include "SDL_events_c.h"
37
38
39 #ifndef NO_SIGNAL_H
40 static void SDL_HandleSIG(int sig)
41 {
42 /* Reset the signal handler */
43 signal(sig, SDL_HandleSIG);
44
45 /* Signal a quit interrupt */
46 SDL_PrivateQuit();
47 }
48 #endif /* NO_SIGNAL_H */
49
50 /* Public functions */
51 int SDL_QuitInit(void)
52 {
53 #ifndef NO_SIGNAL_H
54 void (*ohandler)(int);
55
56 /* Both SIGINT and SIGTERM are translated into quit interrupts */
57 ohandler = signal(SIGINT, SDL_HandleSIG);
58 if ( ohandler != SIG_DFL )
59 signal(SIGINT, ohandler);
60 ohandler = signal(SIGTERM, SDL_HandleSIG);
61 if ( ohandler != SIG_DFL )
62 signal(SIGTERM, ohandler);
63 #endif /* NO_SIGNAL_H */
64
65 /* That's it! */
66 return(0);
67 }
68
69 /* This function returns 1 if it's okay to close the application window */
70 int SDL_PrivateQuit(void)
71 {
72 int posted;
73
74 posted = 0;
75 if ( SDL_ProcessEvents[SDL_QUIT] == SDL_ENABLE ) {
76 SDL_Event event;
77 event.type = SDL_QUIT;
78 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
79 posted = 1;
80 SDL_PushEvent(&event);
81 }
82 }
83 return(posted);
84 }