main.cpp

/**
 * @file main.cpp
 * @brief Application entry: branded icon and animated splash, then main window.
 */

#include "animatedsplash.h"
#include "mainwindow.h"

#include <QApplication>
#include <QElapsedTimer>
#include <QIcon>
#include <QPixmap>
#include <QThread>

namespace {

/**
 * @brief Builds a multi-resolution app icon (Linux window managers need small sizes).
 *
 * @return QIcon with 16..256 pixmaps derived from the bundled master PNG.
 */
QIcon makeAppIcon()
{
    const QPixmap master(QStringLiteral(":/resources/icons/app_icon.png"));
    QIcon icon;
    if (master.isNull()) {
        return icon;
    }

    const int sizes[] = {16, 24, 32, 48, 64, 128, 256};
    for (int size : sizes) {
        icon.addPixmap(master.scaled(size, size, Qt::KeepAspectRatio, Qt::SmoothTransformation));
    }
    icon.addPixmap(master);
    return icon;
}

} // namespace

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    a.setAttribute(Qt::AA_DontUseNativeDialogs, true);
    a.setApplicationName(QStringLiteral("Spectrum Analyzer"));
    a.setApplicationDisplayName(QStringLiteral("Spectrum Analyzer"));
    a.setOrganizationName(QStringLiteral("SpectrumAnalyzer"));
    a.setDesktopFileName(QStringLiteral("spectrum-analyzer"));

    const QIcon appIcon = makeAppIcon();
    a.setWindowIcon(appIcon);

    AnimatedSplash splash;
    splash.setWindowIcon(appIcon);
    splash.showCoveringScreen();
    a.processEvents();

    MainWindow w;
    w.setWindowIcon(appIcon);

    // Hold long enough for the circular sweep and name to read.
    QElapsedTimer hold;
    hold.start();
    while (hold.elapsed() < 2800) {
        a.processEvents();
        QThread::msleep(16);
    }

    splash.close();
    w.show();
    w.raise();
    w.activateWindow();

    return a.exec();
}