Mercurial > sdl-ios-xcode
annotate src/events/SDL_active.c @ 548:6cd49f896c5a
Open ALSA devices in non-blocking mode (thanks Aleksey!)
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 17 Nov 2002 20:02:26 +0000 |
| parents | f6ffac90895c |
| children | b8d311d90021 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
297
f6ffac90895c
Updated copyright information for 2002
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 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
diff
changeset
|
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 } | |
| 49 | |
| 50 Uint8 SDL_GetAppState(void) | |
| 51 { | |
| 52 return(SDL_appstate); | |
| 53 } | |
| 54 | |
| 55 /* This is global for SDL_eventloop.c */ | |
| 56 int SDL_PrivateAppActive(Uint8 gain, Uint8 state) | |
| 57 { | |
| 58 int posted; | |
| 59 Uint8 new_state; | |
| 60 | |
| 61 /* Modify the current state with the given mask */ | |
| 62 if ( gain ) { | |
| 63 new_state = (SDL_appstate | state); | |
| 64 } else { | |
| 65 new_state = (SDL_appstate & ~state); | |
| 66 } | |
| 67 | |
| 68 /* Drop events that don't change state */ | |
| 69 if ( new_state == SDL_appstate ) { | |
| 70 return(0); | |
| 71 } | |
| 72 | |
| 73 /* Update internal active state */ | |
| 74 SDL_appstate = new_state; | |
| 75 | |
| 76 /* Post the event, if desired */ | |
| 77 posted = 0; | |
| 78 if ( SDL_ProcessEvents[SDL_ACTIVEEVENT] == SDL_ENABLE ) { | |
| 79 SDL_Event event; | |
| 80 memset(&event, 0, sizeof(event)); | |
| 81 event.type = SDL_ACTIVEEVENT; | |
| 82 event.active.gain = gain; | |
| 83 event.active.state = state; | |
| 84 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { | |
| 85 posted = 1; | |
| 86 SDL_PushEvent(&event); | |
| 87 } | |
| 88 } | |
| 89 | |
| 90 /* If we lost keyboard focus, post key-up events */ | |
| 91 if ( (state & SDL_APPINPUTFOCUS) && !gain ) { | |
| 92 SDL_ResetKeyboard(); | |
| 93 } | |
| 94 return(posted); | |
| 95 } |