/***************************************************************************
 *   Copyright (C) 2008 by Oliver Groß                                     *
 *   z.o.gross@gmx.de                                                      *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/
#include "cnonogram.h"
#include <QImage>

namespace libqcross {
	CNonogram::CNonogram()
		: m_Size(0, 0),
		m_Data(NULL),
		m_Timeout(0),
		m_MaximumNumberCount(0) {
	}
	
	CNonogram::CNonogram(QSize size) : m_Size(size), m_MaximumNumberCount(0) {
		init();
	}
	
	CNonogram::~CNonogram() {
		cleanup();
	}
	
	void CNonogram::loadFromImage(QImage & image) {
		if (image.isNull())
			return;
		
		resize(image.size());
		
		for (int i = 0; i < m_Size.width(); i++)
			for (int j = 0; j < m_Size.height(); j++)
				m_Data[i][j] = !(image.pixel(i, j) & 0x00FFFFFF);
	}
	
	void CNonogram::resize(QSize size) {
		if (m_Data)
			cleanup();
		
		m_Size = size;
		init();
	}
	
	void CNonogram::setPixel(int x, int y, bool value) {
		m_Data[x][y] = value;
	}
	
	void CNonogram::updateNumbers() {
		m_BlackPixels = 0;
		int pixelCount;
		
		m_MaximumNumberCount = 0;
		
		for (int i = 0; i < m_Size.height(); i++) {
			m_RowNumbers[i].clear();
			pixelCount = 0;
			for (int j = 0; j < m_Size.width(); j++) {
				if (m_Data[j][i]) {
					pixelCount++;
					m_BlackPixels++;
				}
				else if (pixelCount) {
					m_RowNumbers[i] << pixelCount;
					pixelCount = 0;
				}
			}
			if (pixelCount || m_RowNumbers[i].empty())
				m_RowNumbers[i] << pixelCount;
			
			if (m_RowNumbers[i].count() > m_MaximumNumberCount)
				m_MaximumNumberCount = m_RowNumbers[i].count();
		}
		
		for (int j = 0; j < m_Size.width(); j++) {
			m_ColumnNumbers[j].clear();
			pixelCount = 0;
			for (int i = 0; i < m_Size.height(); i++) {
				if (m_Data[j][i]) {
					pixelCount++;
				}
				else if (pixelCount) {
					m_ColumnNumbers[j] << pixelCount;
					pixelCount = 0;
				}
			}
			if (pixelCount || m_ColumnNumbers[j].empty())
				m_ColumnNumbers[j] << pixelCount;
			
			if (m_ColumnNumbers[j].count() > m_MaximumNumberCount)
				m_MaximumNumberCount = m_ColumnNumbers[j].count();
		}
	}
	
	void CNonogram::fill(bool value) {
		for (int i = 0; i < m_Size.width(); i++)
			for (int j = 0; j < m_Size.height(); j++)
				m_Data[i][j] = value;
	}
	
	void CNonogram::cleanup() {
		delete[] m_RowNumbers;
		delete[] m_ColumnNumbers;
		
		for (int i = 0; i < m_Size.width(); i++)
			delete[] m_Data[i];
		delete[] m_Data;
		
		m_Data = NULL;
	}
	
	void CNonogram::init() {
		m_Data = new bool *[m_Size.width()];
		for (int i = 0; i < m_Size.width(); i++)
			m_Data[i] = new bool[m_Size.height()];
		
		m_RowNumbers = new NumbersVector[m_Size.height()];
		m_ColumnNumbers = new NumbersVector[m_Size.width()];
	}
}