Mercurial > sdl-ios-xcode
diff src/events/SDL_active.c @ 0:74212992fb08
Initial revision
author | Sam Lantinga <slouken@lokigames.com> |
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date | Thu, 26 Apr 2001 16:45:43 +0000 |
parents | |
children | e8157fcb3114 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/events/SDL_active.c Thu Apr 26 16:45:43 2001 +0000 @@ -0,0 +1,95 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + Sam Lantinga + slouken@devolution.com +*/ + +#ifdef SAVE_RCSID +static char rcsid = + "@(#) $Id$"; +#endif + +/* Application focus/iconification handling code for SDL */ + +#include <stdio.h> +#include <string.h> + +#include "SDL_events.h" +#include "SDL_events_c.h" + + +/* These are static for our active event handling code */ +static Uint8 SDL_appstate = 0; + +/* Public functions */ +int SDL_AppActiveInit(void) +{ + /* Start completely active */ + SDL_appstate = (SDL_APPACTIVE|SDL_APPINPUTFOCUS|SDL_APPMOUSEFOCUS); + + /* That's it! */ + return(0); +} + +Uint8 SDL_GetAppState(void) +{ + return(SDL_appstate); +} + +/* This is global for SDL_eventloop.c */ +int SDL_PrivateAppActive(Uint8 gain, Uint8 state) +{ + int posted; + Uint8 new_state; + + /* Modify the current state with the given mask */ + if ( gain ) { + new_state = (SDL_appstate | state); + } else { + new_state = (SDL_appstate & ~state); + } + + /* Drop events that don't change state */ + if ( new_state == SDL_appstate ) { + return(0); + } + + /* Update internal active state */ + SDL_appstate = new_state; + + /* Post the event, if desired */ + posted = 0; + if ( SDL_ProcessEvents[SDL_ACTIVEEVENT] == SDL_ENABLE ) { + SDL_Event event; + memset(&event, 0, sizeof(event)); + event.type = SDL_ACTIVEEVENT; + event.active.gain = gain; + event.active.state = state; + if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { + posted = 1; + SDL_PushEvent(&event); + } + } + + /* If we lost keyboard focus, post key-up events */ + if ( (state & SDL_APPINPUTFOCUS) && !gain ) { + SDL_ResetKeyboard(); + } + return(posted); +}