Mercurial > sdl-ios-xcode
annotate src/events/SDL_active.c @ 1123:28ac87a38c17
Date: Fri, 08 Jul 2005 22:43:48 +0200 (CEST)
From: Jiri Svoboda
Subject: [SDL] signal handling bug
I encountered the following bug:
SDL doesn't reset signal handlers for SIGTERM and SIGINT, after calling SDL_Quit these remain hooked to the handler in SDL_quit.c, being translated into SDL_QUIT events.
Consequently an application that issues a SDL_Quit and remains running will ignore any SIGTERM or SIGINT., and specifically CTRL-C presses.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 21 Aug 2005 06:18:54 +0000 |
| parents | b8d311d90021 |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
769
b8d311d90021
Updated copyright information for 2004 (Happy New Year!)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 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 | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
0
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* Application focus/iconification handling code for SDL */ | |
| 29 | |
| 30 #include <stdio.h> | |
| 31 #include <string.h> | |
| 32 | |
| 33 #include "SDL_events.h" | |
| 34 #include "SDL_events_c.h" | |
| 35 | |
| 36 | |
| 37 /* These are static for our active event handling code */ | |
| 38 static Uint8 SDL_appstate = 0; | |
| 39 | |
| 40 /* Public functions */ | |
| 41 int SDL_AppActiveInit(void) | |
| 42 { | |
| 43 /* Start completely active */ | |
| 44 SDL_appstate = (SDL_APPACTIVE|SDL_APPINPUTFOCUS|SDL_APPMOUSEFOCUS); | |
| 45 | |
| 46 /* That's it! */ | |
| 47 return(0); | |
| 48 } | |
|
1123
28ac87a38c17
Date: Fri, 08 Jul 2005 22:43:48 +0200 (CEST)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
49 void SDL_AppActiveQuit(void) |
|
28ac87a38c17
Date: Fri, 08 Jul 2005 22:43:48 +0200 (CEST)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
50 { |
|
28ac87a38c17
Date: Fri, 08 Jul 2005 22:43:48 +0200 (CEST)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
51 } |
| 0 | 52 |
| 53 Uint8 SDL_GetAppState(void) | |
| 54 { | |
| 55 return(SDL_appstate); | |
| 56 } | |
| 57 | |
| 58 /* This is global for SDL_eventloop.c */ | |
| 59 int SDL_PrivateAppActive(Uint8 gain, Uint8 state) | |
| 60 { | |
| 61 int posted; | |
| 62 Uint8 new_state; | |
| 63 | |
| 64 /* Modify the current state with the given mask */ | |
| 65 if ( gain ) { | |
| 66 new_state = (SDL_appstate | state); | |
| 67 } else { | |
| 68 new_state = (SDL_appstate & ~state); | |
| 69 } | |
| 70 | |
| 71 /* Drop events that don't change state */ | |
| 72 if ( new_state == SDL_appstate ) { | |
| 73 return(0); | |
| 74 } | |
| 75 | |
| 76 /* Update internal active state */ | |
| 77 SDL_appstate = new_state; | |
| 78 | |
| 79 /* Post the event, if desired */ | |
| 80 posted = 0; | |
| 81 if ( SDL_ProcessEvents[SDL_ACTIVEEVENT] == SDL_ENABLE ) { | |
| 82 SDL_Event event; | |
| 83 memset(&event, 0, sizeof(event)); | |
| 84 event.type = SDL_ACTIVEEVENT; | |
| 85 event.active.gain = gain; | |
| 86 event.active.state = state; | |
| 87 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { | |
| 88 posted = 1; | |
| 89 SDL_PushEvent(&event); | |
| 90 } | |
| 91 } | |
| 92 | |
| 93 /* If we lost keyboard focus, post key-up events */ | |
| 94 if ( (state & SDL_APPINPUTFOCUS) && !gain ) { | |
| 95 SDL_ResetKeyboard(); | |
| 96 } | |
| 97 return(posted); | |
| 98 } |