/*

 * Copyright © 2015 David FORT <contact@hardening-consulting.com>

 *

 * Permission to use, copy, modify, distribute, and sell this software and its

 * documentation for any purpose is hereby granted without fee, provided that

 * the above copyright notice appear in all copies and that both that copyright

 * notice and this permission notice appear in supporting documentation, and

 * that the name of the copyright holders not be used in advertising or

 * publicity pertaining to distribution of the software without specific,

 * written prior permission.  The copyright holders make no representations

 * about the suitability of this software for any purpose.  It is provided "as

 * is" without express or implied warranty.

 *

 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,

 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO

 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR

 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,

 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER

 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE

 * OF THIS SOFTWARE.

 */

#include <wayland-util.h>

#include <string.h>

#include <uwac/uwac-tools.h>

/** @brief */

struct uwac_touch_automata {

	struct wl_array tp;

};

void UwacTouchAutomataInit(UwacTouchAutomata *automata) {

	wl_array_init(&automata->tp);

}

void UwacTouchAutomataReset(UwacTouchAutomata *automata) {

	automata->tp.size = 0;

}

bool UwacTouchAutomataInjectEvent(UwacTouchAutomata *automata, UwacEvent *event) {

	UwacTouchPoint *tp;

	switch (event->type) {

	case UWAC_EVENT_TOUCH_FRAME_BEGIN:

		break;

	case UWAC_EVENT_TOUCH_UP: {

		UwacTouchUp *touchUp = &event->touchUp;

		int toMove = automata->tp.size - sizeof(UwacTouchPoint);

		wl_array_for_each(tp, &automata->tp) {

			if (tp->id == touchUp->id) {

				if (toMove)

					memmove(tp, tp+1, toMove);

				return true;

			}

			toMove -= sizeof(UwacTouchPoint);

		}

		break;

	}

	case UWAC_EVENT_TOUCH_DOWN: {

		UwacTouchDown *touchDown = &event->touchDown;

		wl_array_for_each(tp, &automata->tp) {

			if (tp->id == touchDown->id) {

				tp->x = touchDown->x;

				tp->y = touchDown->y;

				return true;

			}

		}

		tp = wl_array_add(&automata->tp, sizeof(UwacTouchPoint));

		if (!tp)

			return false;

		tp->id = touchDown->id;

		tp->x = touchDown->x;

		tp->y = touchDown->y;

		break;

	}

	case UWAC_EVENT_TOUCH_FRAME_END:

		break;

	default:

		break;

	}

	return true;

}