e14743d1 |
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 | } |