|
1 /* |
|
2 SDL - Simple DirectMedia Layer |
|
3 Copyright (C) 1997-2006 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 } |