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annotate src/events/SDL_quit.c @ 1662:782fd950bd46 SDL-1.3

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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API. WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid. The code is now run through a consistent indent format: indent -i4 -nut -nsc -br -ce The headers are being converted to automatically generate doxygen documentation.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 28 May 2006 13:04:16 +0000
parents d910939febfa
children 4da1ee79c9af
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* General quit handling code for SDL */
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25
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26 #ifdef HAVE_SIGNAL_H
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27 #include <signal.h>
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28 #endif
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29
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30 #include "SDL_events.h"
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31 #include "SDL_events_c.h"
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32
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33
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34 #ifdef HAVE_SIGNAL_H
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35 static void
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36 SDL_HandleSIG (int sig)
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37 {
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38 /* Reset the signal handler */
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39 signal (sig, SDL_HandleSIG);
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40
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41 /* Signal a quit interrupt */
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42 SDL_PrivateQuit ();
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43 }
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44 #endif /* HAVE_SIGNAL_H */
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45
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46 /* Public functions */
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47 int
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48 SDL_QuitInit (void)
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49 {
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50 #ifdef HAVE_SIGNAL_H
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51 void (*ohandler) (int);
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52
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53 /* Both SIGINT and SIGTERM are translated into quit interrupts */
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54 ohandler = signal (SIGINT, SDL_HandleSIG);
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55 if (ohandler != SIG_DFL)
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56 signal (SIGINT, ohandler);
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57 ohandler = signal (SIGTERM, SDL_HandleSIG);
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58 if (ohandler != SIG_DFL)
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59 signal (SIGTERM, ohandler);
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60 #endif /* HAVE_SIGNAL_H */
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61
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62 /* That's it! */
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63 return (0);
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64 }
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65
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66 void
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67 SDL_QuitQuit (void)
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68 {
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69 #ifdef HAVE_SIGNAL_H
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70 void (*ohandler) (int);
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71
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72 ohandler = signal (SIGINT, SIG_DFL);
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73 if (ohandler != SDL_HandleSIG)
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74 signal (SIGINT, ohandler);
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75 ohandler = signal (SIGTERM, SIG_DFL);
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76 if (ohandler != SDL_HandleSIG)
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77 signal (SIGTERM, ohandler);
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78 #endif /* HAVE_SIGNAL_H */
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79 }
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81 /* This function returns 1 if it's okay to close the application window */
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82 int
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83 SDL_PrivateQuit (void)
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84 {
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85 int posted;
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86
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87 posted = 0;
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88 if (SDL_ProcessEvents[SDL_QUIT] == SDL_ENABLE) {
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89 SDL_Event event;
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90 event.type = SDL_QUIT;
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91 if ((SDL_EventOK == NULL) || (*SDL_EventOK) (&event)) {
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92 posted = 1;
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93 SDL_PushEvent (&event);
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94 }
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95 }
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96 return (posted);
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97 }
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98
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99 /* vi: set ts=4 sw=4 expandtab: */