Method mouseMoveEvent

src/gui/SpectrumWidget.cpp:6564–6986

}

void SpectrumWidget::mouseMoveEvent(QMouseEvent* ev)
{
    PerfInputScope perfScope("mouseMove");
    if (PerfTelemetry::instance().enabled()) {
        const qint64 nowNs = PerfTelemetry::nowNs();
        if (m_lastMouseMoveNs > 0) {
            PerfTelemetry::instance().recordMouseMoveGap(
                static_cast<double>(nowNs - m_lastMouseMoveNs) / 1000000.0);
        }
        m_lastMouseMoveNs = nowNs;
    }
    const auto dragStatePublisher = makeScopeExit([this] { publishPerfDragState(); });
    (void)dragStatePublisher;

    const int chromeH  = freqScaleH() + DIVIDER_H;
    const int contentH = height() - chromeH;
    const int specH = static_cast<int>(contentH * m_spectrumFrac);
    const int y = static_cast<int>(ev->position().y());
    const int mx = static_cast<int>(ev->position().x());
    const QPoint mousePos = ev->position().toPoint();
    Qt::CursorShape sliceCursorShape = Qt::ArrowCursor;
    const bool overSliceCursorTarget = sliceCursorShapeAt(mousePos, sliceCursorShape);
    if (!anyDragActive()) {
        if (overSliceCursorTarget) {
            setVfoCursorOverride(sliceCursorShape);
        } else {
            clearVfoCursorOverride();
        }
    }

    // Let child widgets (overlay menu buttons) own the pointer while hovered so
    // their tooltips are not killed by SpectrumWidget's QToolTip::hideText() calls.
    // Slice passband/edge zones are still owned by the spectrum because their
    // cursor advertises the drag action before click. (#2355)
    if (!anyDragActive() && childAt(mousePos) && !overSliceCursorTarget) {
        ev->ignore();
        return;
    }

    // TNF drag
    if (m_draggingTnfId >= 0) {
        const double newFreq = xToMhz(mx);
        const int dy = static_cast<int>(ev->position().y()) - m_tnfDragStartPos.y();
        const double widthScale = std::pow(2.0, static_cast<double>(-dy) / 48.0);
        const int newWidthHz = std::clamp(
            static_cast<int>(std::lround(static_cast<double>(m_dragTnfOrigWidthHz) * widthScale)),
            10, 12000);
        for (auto& t : m_tnfMarkers) {
            if (t.id == m_draggingTnfId) {
                t.freqMhz = newFreq;
                t.widthHz = newWidthHz;
                break;
            }
        }
        if (!qFuzzyCompare(newFreq + 1.0, m_dragTnfLastFreq + 1.0)) {
            m_dragTnfLastFreq = newFreq;
            emit tnfMoveRequested(m_draggingTnfId, newFreq);
        }