RAttrBase.cxx

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/*************************************************************************
 * Copyright (C) 1995-2019, 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/RAttrBase.hxx>
 
#include <ROOT/RLogger.hxx>
 
#include <utility>
 
using namespace ROOT::Experimental;
 
RLogChannel &ROOT::Experimental::GPadLog()
{
   static RLogChannel sLog("ROOT.GPad");
   return sLog;
}
 
///////////////////////////////////////////////////////////////////////////////
/// Clear internal data
 
void RAttrBase::ClearData()
{
   if ((fKind == kOwnAttr) && fD.ownattr) {
      delete fD.ownattr;
      fD.ownattr = nullptr;
   }
}
 
///////////////////////////////////////////////////////////////////////////////
/// Creates own attribute - only if no drawable and no parent are assigned
 
RAttrMap *RAttrBase::CreateOwnAttr()
{
   if (((fKind == kParent) && !fD.parent) || ((fKind == kDrawable) && !fD.drawable))
      fKind = kOwnAttr;
 
   if (fKind != kOwnAttr)
      return nullptr;
 
   if (!fD.ownattr)
      fD.ownattr = new RAttrMap();
 
   return fD.ownattr;
}
 
///////////////////////////////////////////////////////////////////////////////
/// Clear value if any with specified name
 
void RAttrBase::ClearValue(const std::string &name)
{
   if (auto access = AccessAttr(name))
       access.attr->Clear(access.fullname);
}
 
///////////////////////////////////////////////////////////////////////////////
/// Set `<NoValue>` for attribute. Ensure that value can not be configured via style - defaults will be used
/// Equivalent to css syntax { attrname:; }
 
void RAttrBase::SetNoValue(const std::string &name)
{
   if (auto access = AccessAttr(name))
       access.attr->AddNoValue(access.fullname);
}
 
///////////////////////////////////////////////////////////////////////////////
/// Move all fields into target object
 
void RAttrBase::MoveTo(RAttrBase &tgt)
{
   std::swap(fKind, tgt.fKind);
   std::swap(fD, tgt.fD);
   std::swap(fPrefix, tgt.fPrefix);
}