Mercurial > sdl-ios-xcode
comparison 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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-1:000000000000 | 0:74212992fb08 |
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1 /* | |
2 SDL - Simple DirectMedia Layer | |
3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga | |
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 | |
20 slouken@devolution.com | |
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 } |