Method cmdVfo

src/core/TciProtocol.cpp:390–427

// ── VFO: get/set frequency ─────────────────────────────────────────────────

QString TciProtocol::cmdVfo(const QStringList& args, bool isSet)
{
    if (args.isEmpty()) return {};
    int trx = args[0].toInt();
    auto* s = sliceForTrx(trx);
    if (!s) return {};

    if (!isSet) {
        // Get: vfo:trx,channel,freq_hz;
        long long hz = static_cast<long long>(std::round(s->frequency() * 1e6));
        return QStringLiteral("vfo:%1,0,%2;").arg(trx).arg(hz);
    }

    // Set: vfo:trx,channel,freq_hz
    if (args.size() < 3) return {};
    bool ok;
    long long hz = args[2].toLongLong(&ok);
    if (!ok || hz < 0) return {};
    double mhz = hz / 1e6;

    // Same policy as RigctlProtocol::cmdSetFreq: recenter only for tunes
    // that leave the pan's current span (band changes); in-span retunes
    // (Doppler steps from satellite trackers) use autopan=0 so the pan
    // stays put.
    RadioModel* model = m_model;
    QMetaObject::invokeMethod(s, [s, model, mhz]() {
        bool inSpan = false;
        if (auto* pan = model ? model->panadapter(s->panId()) : nullptr) {
            const double halfBw = pan->bandwidthMhz() / 2.0;
            inSpan = halfBw > 0.0 && qAbs(mhz - pan->centerMhz()) <= halfBw;
        }
        if (inSpan) s->setFrequency(mhz);
        else        s->tuneAndRecenter(mhz);
    }, Qt::QueuedConnection);

    m_pendingNotification = QStringLiteral("vfo:%1,0,%2;").arg(trx).arg(hz);
    return {};
}

// ── Modulation: get/set mode ───────────────────────────────────────────────