/***************************************************************************
 *   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.             *
 ***************************************************************************/
#ifndef LIBQCROSS_CMONOPICTURE_H
#define LIBQCROSS_CMONOPICTURE_H

#include <QObject>
#include <QSize>
#include <QVector>
#include <QString>
#include <QBasicTimer>

#include "nonogramproblem.h"
#include "nonogrammarker.h"

class QImage;

namespace libqnono {
	class CNonogram : public QObject {
		Q_OBJECT
	public:
		typedef QVector<quint16> NumbersVector;
		
		explicit CNonogram(QObject *parent = 0);
		
		void start(const NonogramProblem & problem);
		
		const NonogramProblem & problem() const { return m_problem; }
		QString name() const { return m_problem.name(); }
		quint16 timeout() const { return m_problem.timeout(); }
		const NonogramImage & solution() const { return m_problem.solution(); }
		const NonogramNumbers & numbers() const { return m_problem.numbers(); }
		
		const NonogramMarker & marker() const { return m_marker; }
		
		bool valid() const { return (!size().isEmpty()) && (0 != m_problem.solution().blackPixels()); }
		
		QSize size() const { return m_problem.size(); }
		int width() const { return size().width(); }
		int height() const { return size().height(); }
		
		int time() const { return m_time; }
		
		bool isPaused() const { return m_paused; }
		bool isFinished() const { return m_finished; }
		
		bool saveGame(QString fileName);
		bool loadGame(QString fileName);
		
		bool readFromStream(QDataStream & stream);
		void writeToStream(QDataStream& stream) const;
		
	public slots:
		void setMark(int x, int y, NonogramMarker::Mark mark);
		void restart();
		void pause();
		void resume();
		void solve();
		
	signals:
		void loaded(); /* new problem/loaded savegame */
		
		void won(int score); /* score is the current time */
		void timeup();
		
		void wrongMark(int x, int y, int penaltyTime);
		void changedMark(int x, int y);
		
		void restarted();
		void paused(int time);
		void resumed(int time);
		void tick(int time);
		
	protected:
		virtual void timerEvent(QTimerEvent * event);
		
		void internRestart(bool newGame);
		
		QBasicTimer m_timer;
		
		NonogramProblem m_problem;
		NonogramMarker m_marker;
		int m_markedPixels;
		
		int m_time; /* timeout() == 0: used time, timeout() > 0: remaining time */
		int m_errorCount;
		bool m_preventErrors; /* (timeout() > 0) for now - must be false if timeout() == 0 */
		bool m_finished, m_paused;
	};
	
	QDataStream & operator<<(QDataStream & stream, const CNonogram & nonogram);
	QDataStream & operator>>(QDataStream & stream, CNonogram & nonogram);
}

#endif