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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@devolution.com
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* General quit handling code for SDL */
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29
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30 #include <stdio.h>
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31 #ifndef NO_SIGNAL_H
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32 #include <signal.h>
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33 #endif
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34
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35 #include "SDL_events.h"
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36 #include "SDL_events_c.h"
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37
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38
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39 #ifndef NO_SIGNAL_H
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40 static void SDL_HandleSIG(int sig)
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41 {
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42 /* Reset the signal handler */
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43 signal(sig, SDL_HandleSIG);
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44
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45 /* Signal a quit interrupt */
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46 SDL_PrivateQuit();
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47 }
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48 #endif /* NO_SIGNAL_H */
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49
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50 /* Public functions */
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51 int SDL_QuitInit(void)
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52 {
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53 #ifndef NO_SIGNAL_H
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54 void (*ohandler)(int);
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55
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56 /* Both SIGINT and SIGTERM are translated into quit interrupts */
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57 ohandler = signal(SIGINT, SDL_HandleSIG);
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58 if ( ohandler != SIG_DFL )
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59 signal(SIGINT, ohandler);
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60 ohandler = signal(SIGTERM, SDL_HandleSIG);
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61 if ( ohandler != SIG_DFL )
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62 signal(SIGTERM, ohandler);
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63 #endif /* NO_SIGNAL_H */
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64
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65 /* That's it! */
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66 return(0);
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67 }
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68
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69 /* This function returns 1 if it's okay to close the application window */
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70 int SDL_PrivateQuit(void)
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71 {
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72 int posted;
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73
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74 posted = 0;
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75 if ( SDL_ProcessEvents[SDL_QUIT] == SDL_ENABLE ) {
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76 SDL_Event event;
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77 event.type = SDL_QUIT;
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78 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
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79 posted = 1;
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80 SDL_PushEvent(&event);
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81 }
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82 }
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83 return(posted);
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84 }
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