/data/refman/pasoursint/CMSSW_5_3_3/src/FastSimulation/Utilities/interface/Histos.h

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#ifndef Histos_H
#define Histos_H

// for debugging

//#include "TROOT.h"
#include "TObject.h"

#include <string>
#include <map>
#include <iostream>
//#include <sstream>

class Histos
{
 public:

  typedef std::map<std::string,TObject*>::const_iterator HistoItr;

  static Histos* instance();

  virtual ~Histos();
  
  void book(const std::string& name, 
            int nx  , float xmin   , float xmax,
            int ny=0, float ymin=0., float ymax=0.);

  // Same as before. Creates n2-n1 histos with name name+n1 ... name+n2
  void bookByNumber(const std::string& name, int n1,int n2,
            int nx  , float xmin   , float xmax,
            int ny=0, float ymin=0., float ymax=0.);


  void book(const std::string& name, int nx, float xmin, float xmax,
            const std::string& option);


  void put(const std::string& file, std::string name="");

  void divide(const std::string& h1, const std::string& h2, const std::string& h3);

  void fill(const std::string& name, float val1, float val2=1., float val3=1.);

  // Fill a series of histos. The name is name+number
  void fillByNumber(const std::string& name,int number,float val1,float val2=1.,float val3=1.);

  void addObject(const std::string& name, TObject * obj);

    void debug(std::string p="") const {std::cout << " Histos myMap : "<< &theHistos << " " << p <<std::endl;}

 private:

  // The constructor is hidden as we do not want to construct
  // more than one instance.
  Histos();

  // The instance
  static Histos* myself;

  // The histos booked
  TObject* theHisto;
  std::map<std::string,TObject*> theHistos;
  std::map<std::string,unsigned> theTypes;
  std::map<std::string,TObject*> theObjects;
  
};
#endif