G4ToolsSGQtZB.cc

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// Guy Barrand 13th April 2023
 
#include "G4ToolsSGQtZB.hh"
 
#include "G4ToolsSGQtZBViewer.hh"
 
#include "G4Qt.hh"
 
#include "G4UIbatch.hh"
 
G4ToolsSGQtZB::G4ToolsSGQtZB():
parent
("TOOLSSG_QT_ZB",
 "TSG_QT_ZB",
 "TOOLSSG_QT_ZB is a graphics driver based on the g4tools tools/sg scene graph logic where\n\
 the rendering is done with the g4tools zbuffer and the windowing is done with Qt.",
 parent::threeDInteractive)
,fSGSession(nullptr)
{}
 
G4ToolsSGQtZB::~G4ToolsSGQtZB() {
  delete fSGSession;
}
 
void G4ToolsSGQtZB::Initialise() {
  if(fSGSession) return; //done.
  G4Qt* interactorManager = G4Qt::getInstance();
  QApplication* _qapp =  (QApplication*)interactorManager->GetMainInteractor();
  if(!_qapp) {
    G4cerr << "G4ToolsSGQtZB::Initialise : G4Qt::GetMainInteractor() returns null." << G4endl;
    return;
  }
  fSGSession = new toolx::Qt::session(G4cout,_qapp);
  if(!fSGSession->is_valid()) {
    G4cerr << "G4ToolsSGQtZB::Initialise : session::is_valid() failed." << G4endl;
    delete fSGSession;
    fSGSession = nullptr;
    return;
  }
}
 
G4VSceneHandler* G4ToolsSGQtZB::CreateSceneHandler(const G4String& a_name) {
  G4VSceneHandler* pScene = new G4ToolsSGSceneHandler(*this, a_name);
  return pScene;
}
 
G4VViewer* G4ToolsSGQtZB::CreateViewer(G4VSceneHandler& a_scene,const G4String& a_name) {
  if(!fSGSession) Initialise();
  if(!fSGSession) return nullptr;
  G4VViewer* pView = new G4ToolsSGQtZBViewer(*fSGSession,(G4ToolsSGSceneHandler&)a_scene,a_name);
  if (pView) {
    if (pView->GetViewId() < 0) {
      G4cerr << "G4ToolsSGQtZB::CreateViewer:"
             << " ERROR flagged by negative view id in G4ToolsSGViewer creation."
             << "\n Destroying view and returning null pointer." << G4endl;
      delete pView;
      pView = nullptr;
    }
  }
  if (!pView) {
    G4cerr << "G4ToolsSGQtZB::CreateViewer: ERROR: null pointer on new G4ToolsSGViewer." << G4endl;
    return nullptr;
  }
  return pView;
}
 
G4bool G4ToolsSGQtZB::IsUISessionCompatible () const
{
  // Qt windows require a Qt session.
  G4UIsession* baseSession = G4UImanager::GetUIpointer()->GetBaseSession();
  if (dynamic_cast<G4UIQt*>(baseSession) != nullptr) return true;
  return false;
}