/*
 * (C) Copyright 1996-2016 ECMWF.
 * 
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. 
 * In applying this licence, ECMWF does not waive the privileges and immunities 
 * granted to it by virtue of its status as an intergovernmental organisation nor
 * does it submit to any jurisdiction.
 */

/*! \file ValuePlotMethod.h
    \brief Definition of the Template class ValuePlotMethod.
    
    Magics Team - ECMWF 2004
    
    Started: Thu 26-Aug-2004
    
    Changes:
    
*/

#ifndef ValuePlotMethod_H
#define ValuePlotMethod_H

#include "magics.h"

#include "ValuePlotMethodAttributes.h"
#include "MatrixHandler.h"
#include "PointsHandler.h"
#include "Text.h"
#include "Transformation.h"
#include "MagicsFormat.h"

namespace magics {


class ValuePlotMethod: public ValuePlotMethodAttributes, public vector<BasicGraphicsObject*> {

public:
	ValuePlotMethod() {}
	virtual ~ValuePlotMethod() {}
    virtual void set(const map<string, string>& map ) 
        { ValuePlotMethodAttributes::set(map); }
    virtual void set(const XmlNode& node ) 
        { ValuePlotMethodAttributes::set(node); }
    
    virtual ValuePlotMethod* clone() const {
    	ValuePlotMethod* object = new ValuePlotMethod();
    	object->copy(*this);
    	return object;
    }
    virtual void operator()(MatrixHandler& data, const Transformation& transformation) {
        reset();
    	int rows = data.rows();
           int columns = data.columns();
           for (int j = 0; j < rows ; j += lat_frequency_ ) {
            for (int i = 0; i <columns; i += lon_frequency_) {
                 double val =  data(j,i);
                 if ( min_ <= val && val <= max_ && val != data.missing() ) {
                	UserPoint point(data.column(j, i), data.row(j, i), data(j, i));
                	PaperPoint xy = transformation(point);
                 	if ( transformation.in(xy) ) 
                    	add(xy);
                 }
            }
           }
        }
      virtual void operator()(PointsHandler& data, const Transformation& transformation)
      {
    	  reset();
    	 ThinningPointsHandler thinned(data, lon_frequency_, lat_frequency_);
    	 thinned.setToFirst();
    	 
    	 while ( thinned.more() ) {
    		 UserPoint point =  thinned.current();
    		 double val = point.value();
    		 if ( min_ <= val && val <= max_ )
    		 {
    			 PaperPoint xy = transformation(point);
    			 if ( transformation.in(xy) )
    				 add(xy);
    	 	}
    		 thinned.advance();
    	 }  
    }


protected:
     //! Method to print string about this class on to a stream of type ostream (virtual).
	 virtual void print(ostream& out) const {
         out << "ValuePlotMethod[";
         ValuePlotMethodAttributes::print(out);
         out << "]";
	 }
	 virtual void reset() {} // For Metview, get ready for a second frame.
     virtual void add(const PaperPoint& xy) {
     	 ostringstream nice;
    	 nice << MagicsFormat(format_, xy.value()); 
         Text* text = new Text(); 
         text->addText(nice.str(), *colour_, height_);
         text->setJustification(MCENTRE);
         text->push_back(xy);
         push_back(text);
    }
     
     string label(double val) {
    	 ostringstream nice;
    	 nice << MagicsFormat(format_, val);
    	 return nice.str();
     }

private:
    //! Copy constructor - No copy allowed
	ValuePlotMethod(const ValuePlotMethod&);
    //! Overloaded << operator to copy - No copy allowed
	ValuePlotMethod& operator=(const ValuePlotMethod&);
    
// -- Friends
    //! Overloaded << operator to call print().
	friend ostream& operator<<(ostream& s,const ValuePlotMethod& p)
		{ p.print(s); return s; }

};

template <>
class MagTranslator<string, ValuePlotMethod > {
public:
	ValuePlotMethod* operator()(const string& val ) {
		 return SimpleObjectMaker<ValuePlotMethod >::create(val);
	}     
    ValuePlotMethod* magics(const string& param)
    {
        ValuePlotMethod* object=0;
		ParameterManager::update(param, object);
		return object;
    }

};

} // namespace magics


#endif
