/***************************************************************************
 *   Copyright (C) 2007 by Joris Guisson and Ivan Vasic                    *
 *   joris.guisson@gmail.com                                               *
 *   ivasic@gmail.com                                                      *
 *                                                                         *
 *   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 KTWEEKSCENE_H
#define KTWEEKSCENE_H

#include <QGraphicsScene>

namespace kt
{
	struct ScheduleItem;
	class GuidanceLine;

	/**
		@author
	*/
	class WeekScene : public QGraphicsScene
	{
		Q_OBJECT
	public:
		WeekScene(QObject* parent);
		virtual ~WeekScene();
		
		/**
		 * Add an item to the schedule.
		 * @param item The item to add
		 */
		QGraphicsItem* addScheduleItem(ScheduleItem* item);
		
		/**
		 * Update the text of the status line
		 * @param up Up speed
		 * @param down Down speed
		 * @param paused Paused or not
		 */
		void updateStatusText(int up,int down,bool paused);
		
		/**
		 * A schedule item has been moved by the user. 
		 * @param item The item
		 * @param np New position
		 */
		void itemMoved(ScheduleItem* item,const QPointF & np);
		
		/**
		 * An item has been resized by the user.
		 * @param item The item
		 * @param r It's new rectangle
		 */
		void itemResized(ScheduleItem* item,const QRectF & r);
		
		/**
		 * An item has changed, update it.
		 * @param item The item
		 * @param gi The GraphicsItem
		 */
		void itemChanged(ScheduleItem* item,QGraphicsItem* gi);
		
		/**
		 * The color settings have changed.
		 */
		void colorsChanged();
		
		/**
		 * Show or the guidance lines 
		 * @param on 
		 */
		void setShowGuidanceLines(bool on);
		
		/**
		 * Show the guidance lines
		 * @param y1 Height of line 1
		 * @param y2 Height of line 2
		 */
		void updateGuidanceLines(qreal y1,qreal y2);
		
	signals:
		/**
		 * Emitted when an item has been double clicked.
		 * @param gi Item double clicked
		 */
		void itemDoubleClicked(QGraphicsItem* gi);
		
		/**
		 * An item has been moved
		 * @param item The item
		 * @param start The new start time
		 * @param end The new end time
		 * @param day The new day
		 */
		void itemMoved(ScheduleItem* item,const QTime & start,const QTime & end,int day);

	private:
		void addCalendar();
		virtual void mouseDoubleClickEvent(QGraphicsSceneMouseEvent* ev);
	//	virtual void mouseMoveEvent(QGraphicsSceneMouseEvent* ev);
		virtual void mousePressEvent(QGraphicsSceneMouseEvent* ev);
		qreal timeToY(const QTime & time);
		QTime yToTime(qreal y);
		
	private:
		qreal xoff;
		qreal yoff;
		qreal day_width;
		qreal hour_height;
		QGraphicsTextItem* status;
		QList<QGraphicsLineItem*> lines;
		QList<QGraphicsRectItem*> rects;
		GuidanceLine* gline[2]; // guidance lines
	};

}

#endif
