evdb::RootEnv Class Reference

Configure the ROOT environment. More...

#include "RootEnv.h"

Public Member Functions
	RootEnv (int argc, char **argv)
	~RootEnv ()
int	Run ()

Private Member Functions
void	SetStyle ()
void	InterpreterConfig ()
void	SignalConfig ()
void	LoadIncludes ()
void	LoadClasses ()

Detailed Description

Configure the ROOT environment.

Definition at line 14 of file RootEnv.h.

Constructor & Destructor Documentation

evdb::RootEnv::RootEnv	(	int	argc,
		char **	argv
	)

Definition at line 30 of file RootEnv.cxx.

References InterpreterConfig(), LoadClasses(), LoadIncludes(), SetStyle(), and SignalConfig().

  {
    //======================================================================
    // Setup the root environment for a program started with command line
    // options argc and argv
    //======================================================================
    TApplication* app = ROOT::GetROOT()->GetApplication();

    // ROOT::GetROOT() should initialize gROOT.    
    if(!gROOT)
      throw cet::exception("RootEnv") << "No ROOT global pointer"; 
    
    if (app == 0) {
      int    largc = 0;
      char** largv = 0;
      TRint* rapp = new TRint("TAPP",&largc, largv, 0, 0, kTRUE);
    
      //     std::string p = gSystem->BaseName(argv[0]); p+= " [%d] ";
      rapp->SetPrompt("evd [%d] ");
    }
    else {
      gROOT->SetBatch(kFALSE);
      if (gClient==0) {
        gSystem->Load("libGX11.so");
        gVirtualX = new TGX11("X11","X11 session");
        new TGClient(getenv("DISPLAY"));
      }
    }

    this->SetStyle();
    this->SignalConfig();
    this->InterpreterConfig();
    this->LoadIncludes();
    this->LoadClasses();
  }

evdb::RootEnv::~RootEnv

(

)

Definition at line 68 of file RootEnv.cxx.

  {
    // ROOT takes care of the following delete so don't do it twice
    // if (fTheApp) { delete fTheApp; fTheApp = 0; }
  }

Member Function Documentation

void evdb::RootEnv::InterpreterConfig ( )

private

Definition at line 91 of file RootEnv.cxx.

Referenced by RootEnv().

  {
    //======================================================================
    // Configure the root interpreter
    //======================================================================
    if (gInterpreter) { // gInterpreter from TInterpreter.h
      gInterpreter->SaveContext();
      gInterpreter->SaveGlobalsContext();
    }
  }

void evdb::RootEnv::LoadClasses ( )

private

Definition at line 191 of file RootEnv.cxx.

Referenced by RootEnv().

  {
    //======================================================================
    // Load classes to make the root session more covenient
    //======================================================================
    if (gROOT) {
      gROOT->LoadClass("TGeometry",   "Graf3d");
      gROOT->LoadClass("TTree",       "Tree");
      gROOT->LoadClass("TMatrix",     "Matrix");
      gROOT->LoadClass("TMinuit",     "Minuit");
      gROOT->LoadClass("TPostScript", "Postscript");
      gROOT->LoadClass("TCanvas",     "Gpad");
      gROOT->LoadClass("THtml",       "Html");
    }
  }

void evdb::RootEnv::LoadIncludes ( )

private

Definition at line 132 of file RootEnv.cxx.

Referenced by RootEnv().

  {
    //======================================================================
    // Load include files to make the root session more covenient
    //======================================================================
    TApplication* app = gROOT->GetApplication();
    if (app) {
      // Load a set of useful C++ includes.
      // app->ProcessLine("#include <iostream>"); // Root gets this one itself
      app->ProcessLine("#include <iomanip>");
      app->ProcessLine("#include <string>");
    
      // Load experiment include files
      // Have to be careful here, not every experiment uses
      // SRT, so don't try to load the SRT macro paths 
      // if SRT variables aren't defined.
      std::string mp = gROOT->GetMacroPath();
      std::string ip;
      const char* p;
      bool srtPrivate = false;
      bool srtPublic  = false;
      p = gSystem->Getenv("SRT_PRIVATE_CONTEXT");
      if (p) {
        srtPrivate = true;
        mp += ":";
        mp += p;
        mp += ":";
        mp += p;
        mp += "/macros";
        ip += " -I";
        ip += p;

        std::string dip = ".include ";
        dip += gSystem->Getenv("SRT_PRIVATE_CONTEXT");
        gROOT->ProcessLine(dip.c_str());
      }
      p = gSystem->Getenv("SRT_PUBLIC_CONTEXT");
      if (p) {
        srtPublic = true;
        mp += ":";
        mp += p;
        mp += "/macros";
        ip += " -I";
        ip += p;

        std::string dip = ".include ";
        dip += gSystem->Getenv("SRT_PUBLIC_CONTEXT");
        gROOT->ProcessLine(dip.c_str());
      }

      if(srtPublic || srtPrivate){
        gROOT->SetMacroPath(mp.c_str());
        gSystem->SetIncludePath(ip.c_str());
      }
    }
  }

int evdb::RootEnv::Run

(

)

Definition at line 76 of file RootEnv.cxx.

  {
    //======================================================================
    // Turn control of the application over to ROOT's event loop
    //======================================================================
    TApplication* app = ROOT::GetROOT()->GetApplication();
    if (app) {
      app->Run(kFALSE); // kTRUE == "Return from run" request...
      return 1;
    }
    return 0;
  }

void evdb::RootEnv::SetStyle ( )

private

Definition at line 209 of file RootEnv.cxx.

Referenced by RootEnv().

  {
    gROOT->SetStyle("Plain");
  
    // Set Line Widths
    gStyle->SetFrameLineWidth(1);
    gStyle->SetFuncWidth(1);
    gStyle->SetHistLineWidth(1);
  
    gStyle->SetFuncColor(2);
    gStyle->SetGridColor(18);
    gStyle->SetGridStyle(1);
    // SetGridWidth expects a short, the default value is 1, just use that
    gStyle->SetGridWidth();
  
    // Set margins -- I like to shift the plot a little up and to the
    // right to make more room for axis labels
    gStyle->SetPadTopMargin(0.08);
    gStyle->SetPadBottomMargin(0.36);
    gStyle->SetPadRightMargin(0.03);
    gStyle->SetPadLeftMargin(0.10);
  
    // Set fonts
    gStyle->SetTextFont(132);
    gStyle->SetLabelFont(132,"XYZ");
    gStyle->SetStatFont(132);
    gStyle->SetTitleFont(132,"XYZ");
  
    gStyle->SetStatFontSize(0.07);
    gStyle->SetTitleFontSize(0.07);
    gStyle->SetLabelSize(0.07,"XYZ");
    gStyle->SetTitleSize(0.07,"XYZ");
    gStyle->SetTextSize(0.07);
  
    gStyle->SetStatW(0.19);
    gStyle->SetStatX(0.90);
    gStyle->SetStatY(0.90);
    gStyle->SetOptTitle(0);
    gStyle->SetOptStat(0);
  
    // Set tick marks and turn off grids
    gStyle->SetNdivisions(510,"XYZ");
    gStyle->SetPadTickX(1);
    gStyle->SetPadTickY(1);
  
    // Set paper size for life in the US
    gStyle->SetPaperSize(TStyle::kUSLetter);
    gStyle->SetPalette(1);
  
    // Force this style on all histograms
    gROOT->ForceStyle();
  }

void evdb::RootEnv::SignalConfig ( )

private

Definition at line 104 of file RootEnv.cxx.

Referenced by RootEnv().

  {
    //======================================================================
    // Configure root's signale handlers
    //======================================================================
    return;
    if (gSystem) { // gSystem from TSystem.h
      // Reset ROOT's signal handling to the defaults...
      gSystem->ResetSignal(kSigBus,                  kTRUE);
      gSystem->ResetSignal(kSigSegmentationViolation,kTRUE);
      gSystem->ResetSignal(kSigSystem,               kTRUE);
      gSystem->ResetSignal(kSigPipe,                 kTRUE);
      gSystem->ResetSignal(kSigIllegalInstruction,   kTRUE);
      gSystem->ResetSignal(kSigQuit,                 kTRUE);
      gSystem->ResetSignal(kSigInterrupt,            kTRUE);
      gSystem->ResetSignal(kSigWindowChanged,        kTRUE);
      gSystem->ResetSignal(kSigAlarm,                kTRUE);
      gSystem->ResetSignal(kSigChild,                kTRUE);
      gSystem->ResetSignal(kSigUrgent,               kTRUE);
      gSystem->ResetSignal(kSigFloatingException,    kTRUE);
      gSystem->ResetSignal(kSigTermination,          kTRUE);
      gSystem->ResetSignal(kSigUser1,                kTRUE);
      gSystem->ResetSignal(kSigUser2,                kTRUE);
    }
  }

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The documentation for this class was generated from the following files:

• nutools/EventDisplayBase/RootEnv.h
• nutools/EventDisplayBase/RootEnv.cxx