FWFFHelper.cc

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#include "Fireworks/FWInterface/interface/FWFFHelper.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/ServiceRegistry/interface/ActivityRegistry.h"

#include "TROOT.h"
#include "TSystem.h"
#include "TColor.h"
#include "TStyle.h"
#include "TEnv.h"
#include "TRint.h"
#include "TEveManager.h"
#include "TEveEventManager.h"
#include "TEveTrackPropagator.h"
#include "TGLWidget.h"
#include "TEveBrowser.h"

#include <cassert>
#include <iostream>

class FWFFTRint : public TRint {
public:
  FWFFTRint(const char *appClassName, Int_t *argc, char **argv, bool rootPrompt)
      : TRint(appClassName, argc, argv, nullptr, 0, !rootPrompt), m_rootPrompt(rootPrompt) {
    if (rootPrompt)
      return;

    SetPrompt("");
    GetInputHandler()->Remove();
  }

  Bool_t HandleTermInput() override {
    if (m_rootPrompt)
      return TRint::HandleTermInput();
    return true;
  }

private:
  bool m_rootPrompt;
};

FWFFHelper::FWFFHelper(const edm::ParameterSet &ps, const edm::ActivityRegistry &) : m_Rint(nullptr) {
  printf("CMSSW is starting... You should always have a 2 minutes walk every 45 minutes anyways.\n");
  const char *dummyArgvArray[] = {"cmsRun"};
  char **dummyArgv = const_cast<char **>(dummyArgvArray);
  int dummyArgc = 1;

  m_Rint = new FWFFTRint("App", &dummyArgc, dummyArgv, ps.getUntrackedParameter<bool>("rootPrompt"));
  assert(TApplication::GetApplications()->GetSize());

  gROOT->SetBatch(kFALSE);
  TApplication::NeedGraphicsLibs();

  try {
    TGLWidget *w = TGLWidget::Create(gClient->GetDefaultRoot(), kTRUE, kTRUE, nullptr, 10, 10);
    delete w;
  } catch (std::exception &iException) {
    std::cerr << "Insufficient GL support. " << iException.what() << std::endl;
    throw;
  }

  TEveManager::Create(kFALSE, "FI");
}