G4SoQt.cc

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//
// ********************************************************************
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// * include a list of copyright holders.                             *
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// * institutes,nor the agencies providing financial support for this *
// * work  make  any representation or  warranty, express or implied, *
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// * use.  Please see the license in the file  LICENSE  and URL above *
// * for the full disclaimer and the limitation of liability.         *
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// * This  code  implementation is the result of  the  scientific and *
// * technical work of the GEANT4 collaboration.                      *
// * By using,  copying,  modifying or  distributing the software (or *
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// ********************************************************************
//
//
// F.W. Jones 05012018
 
#include <stdlib.h>
#include <string.h>
 
#include "G4ios.hh"
 
#include "G4SoQt.hh"
//#include "G4Qt.hh"
//#include "G4UImanager.hh"
 
#include <Inventor/Qt/SoQt.h>
#include <QMainWindow>
 
#include <qwidget.h>
#include <qapplication.h>
 
#ifndef G4GMAKE
#include "moc_G4SoQt.cpp"
#endif
 
#define G4warn G4cout
 
G4SoQt* G4SoQt::instance = NULL;
 
static G4bool QtInited = FALSE;
 
 
/***************************************************************************/
G4SoQt* G4SoQt::getInstance()
{
  if (instance==NULL) {
     instance = new G4SoQt();
  }
  return instance;
}
 
 
/***************************************************************************/
G4SoQt::G4SoQt()
// FWJ command-line arguments omitted for time being
//G4SoQt* G4SoQt(int a_argn, char** a_args, char*)
{
  externalApp = false;
 
  // FWJ in G4Qt this is used.  qApp is Qt global pointer
  // to the (one and only one) QApplication object:
  //      new QApplication (*p_argn, args);
  //      if(!qApp) {
 
  // FWJ detects existence of Qt UI or other running qApp
  if (qApp) externalApp = true;
 
  QWidget* mainWin = SoQt::init("Geant4");
 
  // FWJ Cf Xt:
  QtInited = TRUE;
 
  // FWJ DEBUG
  //  G4cout << "G4SoQt: mainWin=" << mainWin << G4endl;
  //  G4cout << "G4SoQt: toplevelwidget=" << SoQt::getTopLevelWidget() << G4endl;
 
// FWJ CAN'T GET MENUBAR THIS WAY OR BY CAST
  //  QWidget* toplevel = SoQt::getTopLevelWidget();
  //  QMenuBar* menubar = QMainWindow::menuBar();
  //  G4cout << "G4OpenInventorQtExaminerViewer menubar=" << menubar << G4endl;
 
 
  // FWJ will this work?
  SetMainInteractor(mainWin);
  //  SetMainInteractor(qApp);
  //  AddDispatcher     ((G4DispatchFunction)XtDispatchEvent);
 
// FWJ no locale for now (see G4Qt.cc)
 
}
 
/***************************************************************************/
G4SoQt::~G4SoQt()
{
  if(this==instance) {
    instance = NULL;
  }
}
 
G4bool G4SoQt::Inited()
{
  return QtInited;
}
 
/***************************************************************************/
void* G4SoQt::GetEvent()
{
  return 0;
}
 
 
/***************************************************************************/
void G4SoQt::FlushAndWaitExecution()
{
   // FWJ the following is used in G4Qt:
   //  if(!qApp) return;
   // This starts the Qt main loop:
   //  qApp->processEvents();
 
   // FWJ no, should be done in secondaryLoop()!
   //   SoQt::mainLoop();
}
 
 
/***************************************************************************/
void G4SoQt::SecondaryLoop()
{
   if (externalApp) return;
 
   // FWJ DEBUG
   //      G4cout <<
   //     "ENTERING OIQT VIEWER SECONDARY LOOP" << G4endl;
   //   else
 
   G4warn <<
      "ENTERING OIQT VIEWER SECONDARY LOOP... PRESS E KEY TO EXIT" << G4endl;
 
   SoQt::mainLoop();
}
 
 
/***************************************************************************/
void G4SoQt::ExitSecondaryLoop()
{
   // FWJ DEBUG
   //   G4cout << "G4SoQt: EXIT SECONDARY LOOP externalApp=" <<
   //      externalApp << G4endl;
 
   if (externalApp) return;   
   SoQt::exitMainLoop();
}
/***************************************************************************/
bool G4SoQt::IsExternalApp()
{
  return externalApp;
}