/******************************** LICENSE ********************************

 Copyright 2007 European Centre for Medium-Range Weather Forecasts (ECMWF)

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at 

    http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.

 ******************************** LICENSE ********************************/

/*! \file ColourTable.h
    \brief Definition of the Template class ColourTable.
    
    Magics Team - ECMWF 2005
    
    Started: Wed 6-Apr-2005
    
    Changes:
    
*/

#ifndef ColourTable_H
#define ColourTable_H

#include "magics.h"
#include "Colour.h"


namespace magics {
	
	
class ColourTableEntry 
{
public:
	ColourTableEntry(const Colour& colour) : 
		min_(INT_MAX), max_(INT_MIN), colour_(colour) {}
	~ColourTableEntry() {}
	//void visit(LegendEntryList&) const;
	void value(double val) { 
		if ( min_ > val ) min_ = val; 
		if ( val > max_ ) max_ = val;		
	}
	
	const Colour& colour() const { return colour_; }
	
	double red()   const { return colour_.red(); }
	double blue()  const { return colour_.blue(); }
	double green() const { return colour_.green(); }
	double alpha() const { return colour_.alpha(); }

	bool operator==(const string& other) const {
	   return colour_ == other;
	}
	

protected:
	double min_;
	double max_; 
	Colour colour_;
	void print(ostream&) const; 
	friend ostream& operator<<(ostream& s,const ColourTableEntry& p)
		{ p.print(s); return s; }
};

class ColourTable : public magvector<ColourTableEntry> {

public:
    typedef magvector<ColourTableEntry>::const_iterator ColourIterator;
	ColourTable();
	virtual ~ColourTable();
    virtual void prepare();
    
    //void visit(LegendEntryList&) const;
    void push_pack(const Colour& colour) 
   		{ push_back(ColourTableEntry(colour)); }
protected:
     //! Method to print string about this class on to a stream of type ostream (virtual).
	 virtual void print(ostream&) const; 

private:
   

// -- Friends
    //! Overloaded << operator to call print().
	friend ostream& operator<<(ostream& s,const ColourTable& p)
		{ p.print(s); return s; }

};

} // namespace magics
#endif
