| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 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 | /* Application focus/iconification handling code for SDL */ |
| 25 | |
| 26 | #include "SDL_events.h" |
| 27 | #include "SDL_events_c.h" |
| 28 | |
| 29 | |
| 30 | /* These are static for our active event handling code */ |
| 31 | static Uint8 SDL_appstate = 0; |
| 32 | |
| 33 | /* Public functions */ |
| 34 | int SDL_AppActiveInit(void) |
| 35 | { |
| 36 | /* Start completely active */ |
| 37 | SDL_appstate = (SDL_APPACTIVE|SDL_APPINPUTFOCUS|SDL_APPMOUSEFOCUS); |
| 38 | |
| 39 | /* That's it! */ |
| 40 | return(0); |
| 41 | } |
| 42 | void SDL_AppActiveQuit(void) |
| 43 | { |
| 44 | } |
| 45 | |
| 46 | Uint8 SDL_GetAppState(void) |
| 47 | { |
| 48 | return(SDL_appstate); |
| 49 | } |
| 50 | |
| 51 | /* This is global for SDL_eventloop.c */ |
| 52 | int SDL_PrivateAppActive(Uint8 gain, Uint8 state) |
| 53 | { |
| 54 | int posted; |
| 55 | Uint8 new_state; |
| 56 | |
| 57 | /* Modify the current state with the given mask */ |
| 58 | if ( gain ) { |
| 59 | new_state = (SDL_appstate | state); |
| 60 | } else { |
| 61 | new_state = (SDL_appstate & ~state); |
| 62 | } |
| 63 | |
| 64 | /* Drop events that don't change state */ |
| 65 | if ( new_state == SDL_appstate ) { |
| 66 | return(0); |
| 67 | } |
| 68 | |
| 69 | /* Update internal active state */ |
| 70 | SDL_appstate = new_state; |
| 71 | |
| 72 | /* Post the event, if desired */ |
| 73 | posted = 0; |
| 74 | if ( SDL_ProcessEvents[SDL_ACTIVEEVENT] == SDL_ENABLE ) { |
| 75 | SDL_Event event; |
| 76 | SDL_memset(&event, 0, sizeof(event)); |
| 77 | event.type = SDL_ACTIVEEVENT; |
| 78 | event.active.gain = gain; |
| 79 | event.active.state = state; |
| 80 | if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { |
| 81 | posted = 1; |
| 82 | SDL_PushEvent(&event); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | /* If we lost keyboard focus, post key-up events */ |
| 87 | if ( (state & SDL_APPINPUTFOCUS) && !gain ) { |
| 88 | SDL_ResetKeyboard(); |
| 89 | } |
| 90 | /* If we were minimized, post button-up events */ |
| 91 | if ( (state & SDL_APPACTIVE) && !gain ) { |
| 92 | SDL_ResetMouse(); |
| 93 | } |
| 94 | return(posted); |
| 95 | } |