gsplash_example.cc

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// gsplash
#include "gsplash.h"
 
// qt
#include <QApplication>
#include <QMainWindow>
 
int main(int argc, char* argv[]) {
    // Initialize options and logging for the module.
    auto gopts   = std::make_shared<GOptions>(argc, argv, gsplash::defineOptions());
    auto log     = std::make_shared<GLogger>(gopts, SFUNCTION_NAME, GSPLASH_LOGGER);
 
    // Read runtime configuration:
    // - gui controls whether we instantiate QApplication and show the splash.
    // - tt controls how long the example remains active in GUI mode.
    auto gui     = gopts->getSwitch("gui");
    auto timeout = gopts->getScalarDouble("tt");
 
    int  ret     = EXIT_SUCCESS;
 
    log->info(0, "Starting gsplash 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...");
 
        // Create the Qt application and a main window to demonstrate returning focus.
        app    = new QApplication(argc, argv);
        window = new QMainWindow();
        window->setWindowTitle(QString::fromUtf8("displayUI example"));
 
        // Create the splash screen and display messages.
        // The factory returns nullptr when GUI is disabled; here we are in GUI mode by construction.
        auto gsplash = GSplash::create(gopts, "example.png");
        if (gsplash) {
            gsplash->message("Some text I want to show");
            gsplash->messageAfter(500, "Some other text I want to show");
        }
 
        window->show();
 
        // Quit after timeout. Notice the additional delay needed for the messageAfter.
        QTimer::singleShot(timeout + 500, [] {
            QCoreApplication::quit(); // Stop the event loop.
        });
 
        ret = QApplication::exec();
 
        // Clean up heap-allocated Qt objects.
        delete window;
        delete app;
 
    }
    else {
        // CLI mode (no QApplication is created).
        log->info(0, "Running gsplash in command line mode...");
    }
 
    return ret;
}