g4dialog_example.cc

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// geant4
#include "G4VisExecutive.hh"
#include "G4RunManagerFactory.hh"
 
// g4dialog
#include "g4dialog.h"
#include "g4dialog_options.h"
 
// qt
#include <QApplication>
#include <QMainWindow>
#include <QTimer>
 
int main(int argc, char* argv[]) {
    // Initialize options and logging (framework-provided).
    auto gopts   = std::make_shared<GOptions>(argc, argv, g4dialog::defineOptions());
    auto log     = std::make_shared<GLogger>(gopts, SFUNCTION_NAME, G4DIALOG_LOGGER);
    auto gui     = gopts->getSwitch("gui");
    auto timeout = gopts->getScalarDouble("tt");
    int  ret     = EXIT_SUCCESS;
 
    log->info(0, "Starting g4dialog example...");
 
    // Optional GUI setup (only if --gui is passed).
    QApplication* app    = nullptr;
    QMainWindow*  window = nullptr;
 
    if (gui) {
        log->info(0, "g4dialog", "Running in GUI mode...");
        app    = new QApplication(argc, argv);
        window = new QMainWindow();
        window->setWindowTitle(QString::fromUtf8("displayUI example"));
    }
 
    // Initialize Geant4 visualization manager so that UI/vis-related commands are available.
    auto visManager = new G4VisExecutive;
    visManager->Initialize();
 
    // If GUI, show the window and run Qt loop.
    if (gui) {
        auto* g4dialog = new G4Dialog(gopts, window);
        window->setCentralWidget(g4dialog);
        window->show();
 
        // Quit after timeout (useful for automated testing or demos).
        QTimer::singleShot(timeout, [] {
            QCoreApplication::quit(); // stop the event loop
        });
 
        ret = QApplication::exec();
 
        // Explicit cleanup (Qt parent ownership covers most UI elements, but keep this obvious here).
        delete g4dialog;
        delete window;
        delete app;
    }
    else {
        // CLI mode: no Qt loop is started; this path is useful as a smoke test for options/logging setup.
        log->info(0, "Running g4dialog in command line mode...");
    }
 
    // Cleanup Geant4 visualization manager.
    delete visManager;
 
    return ret;
}