TLeafDraw6Provider.cxx

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/*************************************************************************
 * Copyright (C) 1995-2020, 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 "TLeafProvider.hxx"
 
#include "TVirtualPad.h"
 
/** Provider for drawing of ROOT6 classes */
 
class TLeafDraw6Provider : public TLeafProvider {
public:
 
   bool AddHist(TVirtualPad *pad, TH1 *hist, const std::string &opt)
   {
      if (!hist)
         return false;
 
      pad->Add(hist, opt.c_str());
 
      return true;
   }
 
   TLeafDraw6Provider()
   {
      RegisterDraw6(TLeaf::Class(), [this](TVirtualPad *pad, std::unique_ptr<RHolder> &obj, const std::string &opt) -> bool {
         return AddHist(pad, DrawLeaf(obj), opt);
      });
 
      RegisterDraw6(TBranchElement::Class(), [this](TVirtualPad *pad, std::unique_ptr<RHolder> &obj, const std::string &opt) -> bool {
         return AddHist(pad, DrawBranchElement(obj), opt);
      });
 
      RegisterDraw6(TBranch::Class(), [this](TVirtualPad *pad, std::unique_ptr<RHolder> &obj, const std::string &opt) -> bool {
         return AddHist(pad, DrawBranch(obj), opt);
      });
 
      RegisterDraw6(TVirtualBranchBrowsable::Class(), [this](TVirtualPad *pad, std::unique_ptr<RHolder> &obj, const std::string &opt) -> bool {
         return AddHist(pad, DrawBranchBrowsable(obj), opt);
      });
   }
 
} newTLeafDraw6Provider;