/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2006 Sam Lantinga

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Lesser General Public

    License as published by the Free Software Foundation; either

    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public

    License along with this library; if not, write to the Free Software

    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga

    slouken@libsdl.org

*/

#include "SDL_config.h"

/* Application focus/iconification handling code for SDL */

#include "SDL_events.h"

#include "SDL_events_c.h"

/* These are static for our active event handling code */

static Uint8 SDL_appstate = 0;

/* Public functions */

int SDL_AppActiveInit(void)

{

	/* Start completely active */

	SDL_appstate = (SDL_APPACTIVE|SDL_APPINPUTFOCUS|SDL_APPMOUSEFOCUS);

	/* That's it! */

	return(0);

}

void SDL_AppActiveQuit(void)

{

}

Uint8 SDL_GetAppState(void)

{

	return(SDL_appstate);

}

/* This is global for SDL_eventloop.c */

int SDL_PrivateAppActive(Uint8 gain, Uint8 state)

{

	int posted;

	Uint8 new_state;

	/* Modify the current state with the given mask */

	if ( gain ) {

		new_state = (SDL_appstate | state);

	} else {

		new_state = (SDL_appstate & ~state);

	}

	/* Drop events that don't change state */

	if ( new_state == SDL_appstate ) {

		return(0);

	}

	/* Update internal active state */

	SDL_appstate = new_state;

	/* Post the event, if desired */

	posted = 0;

	if ( SDL_ProcessEvents[SDL_ACTIVEEVENT] == SDL_ENABLE ) {

		SDL_Event event;

		SDL_memset(&event, 0, sizeof(event));

		event.type = SDL_ACTIVEEVENT;

		event.active.gain = gain;

		event.active.state = state;

		if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {

			posted = 1;

			SDL_PushEvent(&event);

		}

	}

	/* If we lost keyboard focus, post key-up events */

	if ( (state & SDL_APPINPUTFOCUS) && !gain ) {

		SDL_ResetKeyboard();

	}

	return(posted);

}