/***************************************************************************
 *   Copyright (C) 2004 by Johan Maes - ON4QZ                              *
 *   on4qz@telenet.be                                                      *
 *   http://users.telenet.be/on4qz                                         *
 *                                                                         *
 *   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 CANVAS_H
#define CANVAS_H

#include <qcanvas.h>
#include <qsize.h>
#include <qimage.h>
#include <qpoint.h>
#include <qfile.h>

#include "canvasitems.h"
/** \file */
/**
@author Johan Maes - ON4QZ
*/
class mcanvas : public QCanvas
{
public:
		/*! loaded image type */
		enum eImageType
		 {
				FLATIMAGE, /*!< loaded image is a simple image (png,jpeg,...) */
				TEMPLATE    /*!< tloaded image is a template file */
			};
    mcanvas(int w,int h);
    ~mcanvas();
    void resize(int w,int h);
    bool load(QFile &f);
    bool save(QFile &f,bool asTemplate);
    QImage *getImage(QSize size);
		void setImage(QImage *ima,int w=0,int h=0);
    void bringToFront();
    void sendToBack();
    void forward();
    void backward();
    void clearAll();
		canvasItemBase *createItem(int itemType);
    QImage *overlay(QImage *im,int templateIndex);
		QImage *overlay(QImage *im,QString fn);
    canvasItemBase *current();
    void copy();
    void paste();
		void selectFront();
		void deleteObject();
		bool checkSelected();
		void resetSelected();
		void setSelected();
		void setSelected(QPoint p);
    canvasItemBase * makeSelection(QPoint cl,bool selectObject=TRUE);
		int count();
		eImageType getImageType(){ return imageType;}
    
private:
    void optimizeDepth();
    void flattenImage();
    
    /** mcanvas keeps track of the latest acccessed item */
		canvasItemBase * currentObject;
		QImage im;
		int depth;
		scanvasItemParam copyParam;
		eImageType imageType;
};

#endif