diff options
Diffstat (limited to 'distrib/sdl-1.2.15/src/events/SDL_quit.c')
| -rw-r--r-- | distrib/sdl-1.2.15/src/events/SDL_quit.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/events/SDL_quit.c b/distrib/sdl-1.2.15/src/events/SDL_quit.c new file mode 100644 index 0000000..2e6c56e --- /dev/null +++ b/distrib/sdl-1.2.15/src/events/SDL_quit.c @@ -0,0 +1,124 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2012 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_SIGACTION + struct sigaction action; + sigaction(SIGINT, NULL, &action); +# ifdef HAVE_SA_SIGACTION + if ( action.sa_handler == SIG_DFL && action.sa_sigaction == (void*)SIG_DFL ) { +# else + if ( action.sa_handler == SIG_DFL ) { +# endif + action.sa_handler = SDL_HandleSIG; + sigaction(SIGINT, &action, NULL); + } + sigaction(SIGTERM, NULL, &action); +# ifdef HAVE_SA_SIGACTION + if ( action.sa_handler == SIG_DFL && action.sa_sigaction == (void*)SIG_DFL ) { +# else + if ( action.sa_handler == SIG_DFL ) { +# endif + action.sa_handler = SDL_HandleSIG; + sigaction(SIGTERM, &action, NULL); + } +#elif 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_SIGACTION + struct sigaction action; + sigaction(SIGINT, NULL, &action); + if ( action.sa_handler == SDL_HandleSIG ) { + action.sa_handler = SIG_DFL; + sigaction(SIGINT, &action, NULL); + } + sigaction(SIGTERM, NULL, &action); + if ( action.sa_handler == SDL_HandleSIG ) { + action.sa_handler = SIG_DFL; + sigaction(SIGTERM, &action, NULL); + } +#elif 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); +} |