RHistPainter.cxx

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/// \file RHistPainter.cxx
/// \ingroup HistPainter ROOT7
/// \author Axel Naumann <axel@cern.ch>
/// \date 2015-07-09
/// \warning This is part of the ROOT 7 prototype! It will change without notice. It might trigger earthquakes. Feedback
/// is welcome!
 
/*************************************************************************
 * Copyright (C) 1995-2016, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/
 
//#include "ROOT/RHistPainter.hxx" see ROOT/RHistDrawable.h
 
#include "ROOT/RHistDrawable.hxx"
#include "ROOT/RPadPainter.hxx"
#include "ROOT/RDisplayItem.hxx"
 
#include <iostream>
#include <cassert>
 
using namespace ROOT::Experimental;
using namespace ROOT::Experimental::Internal;
 
namespace {
class RHistPainter1D : public RHistPainterBase<1> {
public:
   void Paint(RDrawable &drw, const RHistDrawingOpts<1> & /*opts*/, RPadPainter &pad) final
   {
      assert(dynamic_cast<RHistDrawable<1> *>(&drw) && "Wrong drawable type");
      RHistDrawable<1> &hd = static_cast<RHistDrawable<1> &>(drw);
 
      pad.AddDisplayItem(
         std::make_unique<ROOT::Experimental::ROrdinaryDisplayItem<ROOT::Experimental::RHistDrawable<1>>>(&hd));
   }
   virtual ~RHistPainter1D() final {}
};
 
class RHistPainter2D : public RHistPainterBase<2> {
public:
   void Paint(RDrawable &drw, const RHistDrawingOpts<2> & /*opts*/, RPadPainter &pad) final
   {
      assert(dynamic_cast<RHistDrawable<2> *>(&drw) && "Wrong drawable type");
      RHistDrawable<2> &hd = static_cast<RHistDrawable<2> &>(drw);
 
      pad.AddDisplayItem(
         std::make_unique<ROOT::Experimental::ROrdinaryDisplayItem<ROOT::Experimental::RHistDrawable<2>>>(&hd));
   }
   virtual ~RHistPainter2D() final {}
};
 
class RHistPainter3D : public RHistPainterBase<3> {
public:
   void Paint(RDrawable &hist, const RHistDrawingOpts<3> & /*opts*/, RPadPainter & /*canv*/) final
   {
      // TODO: paint!
      std::cout << "Painting 3D histogram (to be done) @" << &hist << '\n';
   }
   virtual ~RHistPainter3D() final {}
};
 
struct HistPainterReg {
   RHistPainter1D fPainter1D;
   RHistPainter2D fPainter2D;
   RHistPainter3D fPainter3D;
} histPainterReg;
} // unnamed namespace