annotate src/events/SDL_active.c @ 1208:d90b362628ea

From: "alan buckley" <alan_baa@hotmail.com> Subject: Patch for RISC OS cursor palette handling in SDL Date: Mon, 07 Nov 2005 09:14:15 -0800 The mouse cursor palette was not correctly restored on RISC OS if the system was using anything but the default mouse colours. Additionally I've modifed the order the wait for vsync is called as it should be after the screen bank switching.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 23 Dec 2005 09:40:15 +0000
parents 28ac87a38c17
children c9b51268668f
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1 /*
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2 SDL - Simple DirectMedia Layer
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b8d311d90021 Updated copyright information for 2004 (Happy New Year!)
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3 Copyright (C) 1997-2004 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* Application focus/iconification handling code for SDL */
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29
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30 #include <stdio.h>
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31 #include <string.h>
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32
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33 #include "SDL_events.h"
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34 #include "SDL_events_c.h"
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35
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36
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37 /* These are static for our active event handling code */
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38 static Uint8 SDL_appstate = 0;
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39
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40 /* Public functions */
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41 int SDL_AppActiveInit(void)
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42 {
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43 /* Start completely active */
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44 SDL_appstate = (SDL_APPACTIVE|SDL_APPINPUTFOCUS|SDL_APPMOUSEFOCUS);
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45
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46 /* That's it! */
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47 return(0);
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48 }
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49 void SDL_AppActiveQuit(void)
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50 {
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51 }
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52
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53 Uint8 SDL_GetAppState(void)
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54 {
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55 return(SDL_appstate);
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56 }
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57
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58 /* This is global for SDL_eventloop.c */
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59 int SDL_PrivateAppActive(Uint8 gain, Uint8 state)
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60 {
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61 int posted;
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62 Uint8 new_state;
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63
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64 /* Modify the current state with the given mask */
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65 if ( gain ) {
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66 new_state = (SDL_appstate | state);
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67 } else {
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68 new_state = (SDL_appstate & ~state);
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69 }
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70
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71 /* Drop events that don't change state */
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72 if ( new_state == SDL_appstate ) {
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73 return(0);
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74 }
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75
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76 /* Update internal active state */
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77 SDL_appstate = new_state;
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78
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79 /* Post the event, if desired */
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80 posted = 0;
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81 if ( SDL_ProcessEvents[SDL_ACTIVEEVENT] == SDL_ENABLE ) {
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82 SDL_Event event;
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83 memset(&event, 0, sizeof(event));
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84 event.type = SDL_ACTIVEEVENT;
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85 event.active.gain = gain;
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86 event.active.state = state;
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87 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
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88 posted = 1;
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89 SDL_PushEvent(&event);
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90 }
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91 }
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92
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93 /* If we lost keyboard focus, post key-up events */
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94 if ( (state & SDL_APPINPUTFOCUS) && !gain ) {
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95 SDL_ResetKeyboard();
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96 }
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97 return(posted);
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98 }