/*
MD_Parola - Library for modular scrolling text and Effects
  
See header file for comments
  
Copyright (C) 2013 Marco Colli. All rights reserved.

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
 */

#include <MD_Parola.h>
#include <MD_Parola_lib.h>
/**
 * \file
 * \brief Implements blinds effect
 */

#define	BLINDS_SIZE	4	///< The width of the blinds in pixels

void MD_PZone::effectBlinds(bool bIn)
// Transfer between messages with blinds effects
{
	switch (_fsmState)
	{
	case INITIALISE:	// bIn = true
	case PAUSE:			// bIn = false
		PRINT_STATE("IO BLIND");
		_nextPos = 0;
		_fsmState = GET_FIRST_CHAR;
		// fall through

	case GET_FIRST_CHAR:	// blinds closing
		PRINT_STATE("IO BLIND");

		_nextPos++;
		for (uint16_t i=ZONE_START_COL(_zoneStart); i<=ZONE_END_COL(_zoneEnd); i++)
		{
			if (i % BLINDS_SIZE < _nextPos)
				_MX->setColumn(i, LIGHT_BAR);
		}

		if (_nextPos == BLINDS_SIZE)
		{
			_nextPos = BLINDS_SIZE;
			_fsmState = GET_NEXT_CHAR;
		}
		break;

	case GET_NEXT_CHAR:		// blinds opening
		PRINT_STATE("IO BLIND");
		zoneClear();
		if (bIn) commonPrint();	// only do this when putting the message up

		_nextPos--;
		for (uint16_t i=ZONE_START_COL(_zoneStart); i<=ZONE_END_COL(_zoneEnd); i++)
		{
			if (i % BLINDS_SIZE < _nextPos)
				_MX->setColumn(i, LIGHT_BAR);
		}

		if (_nextPos == 0)
			_fsmState = PUT_CHAR;
		break;

	case PUT_CHAR:
		PRINT_STATE("IO BLIND");
		zoneClear();
		if (bIn) commonPrint();
		_fsmState = (bIn ? PAUSE : END);
		break;

	default:
		PRINT_STATE("IO BLIND");
		_fsmState = (bIn ? PAUSE : END);
	}
}
