/***************************************************************************
 *   Copyright 2008-2010 Stefan Majewsky <majewsky@gmx.net>
 *
 *   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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 ***************************************************************************/

#ifndef KDIAMOND_BOARD_H
#define KDIAMOND_BOARD_H

class Diamond;

class QAbstractAnimation;
#include <QGraphicsItem>
#include <KGameDifficulty>
class KGameRenderer;

namespace KDiamond
{
	class Board : public QGraphicsObject
	{
		Q_OBJECT
		public:
			Board(KGameRenderer* renderer, KGameDifficulty::standardLevel difficulty);

			int gridSize() const;
			Diamond* diamond(const QPoint& point) const;

			bool hasDiamond(const QPoint& point) const;
			bool hasRunningAnimations() const;
			QList<QPoint> selections() const;
			bool hasSelection(const QPoint& point) const;
			void setSelection(const QPoint& point, bool selected);
			void clearSelection();

			void removeDiamond(const QPoint& point);
			void swapDiamonds(const QPoint& point1, const QPoint& point2);
			void fillGaps();

			virtual QRectF boundingRect() const;
			virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = 0);
		public Q_SLOTS:
			void setPaused(bool paused);
		Q_SIGNALS:
			void animationsFinished();
			void clicked(const QPoint& point);
			void dragged(const QPoint& point, const QPoint& direction);
		private Q_SLOTS:
			void slotAnimationFinished();
			void slotClicked();
			void slotDragged(const QPoint& direction);
		private:
			struct MoveAnimSpec {
				Diamond* diamond;
				QPointF from, to;
			};
			QPoint findDiamond(Diamond* diamond) const;
			Diamond*& rDiamond(const QPoint& point);
			Diamond* spawnDiamond(int color);
			void spawnMoveAnimations(const QList<MoveAnimSpec>& specs);

			static const int MoveDuration;
			static const int RemoveDuration;

			int m_size, m_colorCount;
			QList<QPoint> m_selections;
			bool m_paused;

			KGameRenderer* m_renderer;
			QVector<Diamond*> m_diamonds;
			QList<Diamond*> m_activeSelectors, m_inactiveSelectors;
			QList<QAbstractAnimation*> m_runningAnimations;
	};
}

#endif // KDIAMOND_BOARD_H
