src/events/SDL_active.c
author Sam Lantinga <slouken@libsdl.org>
Sun, 21 May 2006 16:47:41 +0000
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parent 1402 d910939febfa
child 4159 a1b03ba2fcd0
permissions -rw-r--r--
Closed bug #74 Added DirectInput joystick code, contributed by Glenn Maynard. This fixes a problem with the Windows Multimedia joystick driver not showing all 6 axes on a GameCube controller converter, which was donated by Jacob Kolding.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Lesser General Public
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    License as published by the Free Software Foundation; either
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    version 2.1 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Lesser General Public License for more details.
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    You should have received a copy of the GNU Lesser General Public
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    License along with this library; if not, write to the Free Software
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/* Application focus/iconification handling code for SDL */
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#include "SDL_events.h"
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#include "SDL_events_c.h"
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/* These are static for our active event handling code */
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static Uint8 SDL_appstate = 0;
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/* Public functions */
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int SDL_AppActiveInit(void)
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{
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	/* Start completely active */
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	SDL_appstate = (SDL_APPACTIVE|SDL_APPINPUTFOCUS|SDL_APPMOUSEFOCUS);
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	/* That's it! */
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	return(0);
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}
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void SDL_AppActiveQuit(void)
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{
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}
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Uint8 SDL_GetAppState(void)
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{
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	return(SDL_appstate);
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}
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/* This is global for SDL_eventloop.c */
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int SDL_PrivateAppActive(Uint8 gain, Uint8 state)
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{
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	int posted;
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	Uint8 new_state;
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	/* Modify the current state with the given mask */
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	if ( gain ) {
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		new_state = (SDL_appstate | state);
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	} else {
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		new_state = (SDL_appstate & ~state);
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	}
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	/* Drop events that don't change state */
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	if ( new_state == SDL_appstate ) {
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		return(0);
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	}
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	/* Update internal active state */
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	SDL_appstate = new_state;
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	/* Post the event, if desired */
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	posted = 0;
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	if ( SDL_ProcessEvents[SDL_ACTIVEEVENT] == SDL_ENABLE ) {
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		SDL_Event event;
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		SDL_memset(&event, 0, sizeof(event));
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		event.type = SDL_ACTIVEEVENT;
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		event.active.gain = gain;
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		event.active.state = state;
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		if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
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			posted = 1;
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			SDL_PushEvent(&event);
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		}
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	}
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	/* If we lost keyboard focus, post key-up events */
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	if ( (state & SDL_APPINPUTFOCUS) && !gain ) {
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		SDL_ResetKeyboard();
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	}
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	return(posted);
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}