Method SpectrumWidget

src/gui/SpectrumWidget.cpp:868–1146

}

SpectrumWidget::SpectrumWidget(QWidget* parent)
    : SPECTRUM_BASE_CLASS(parent)
{
    // Container declaration — every token lookup made by this widget or
    // any of its children (without their own declaration) resolves
    // through the "spectrum" scope chain.  Token migration into this
    // scope happens in step 4 of the refactor.
    theme::setContainer(this, QStringLiteral("spectrum"));

    m_panStats.clock.start();  // panstats rates are meaningless without an epoch

    setMinimumHeight(100);
    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    setAutoFillBackground(false);
    setAccessibleName(tr("Panadapter spectrum display"));
#ifdef AETHER_GPU_SPECTRUM
    // Explicitly request Metal on macOS.
#  ifdef Q_OS_MAC
    setApi(QRhiWidget::Api::Metal);
    // WA_NativeWindow forces Qt to create a dedicated native NSView for this widget.
    // Without it, QRhiWidget embedded in a QWidget hierarchy (especially one whose
    // backing store was created before this widget was added) fails to obtain a QRhi
    // context because the parent window's surface type is RasterSurface, not MetalSurface
    // (#714, Qt 6.6 era). The native view is expensive, though: every present forces
    // a raster flushSubWindow blend of the pan region on the GUI thread.
    // AETHER_PAN_NO_NATIVE_WINDOW=1 skips it to validate the composited path on
    // newer Qt, where the whole window flushes through one rhi swapchain.
    if (nativeWindowPreferred()) {
        setAttribute(Qt::WA_NativeWindow);
    }
#  else
    // Warn if running under XWayland — GLX context switching between the main
    // window and child dialogs (e.g. Radio Setup) can trigger BadAccess (#1233).
    // main.cpp normally forces native Wayland, but log it if we ended up here.
    if (QGuiApplication::platformName() == QLatin1String("xcb")
        && qEnvironmentVariable("XDG_SESSION_TYPE") == QLatin1String("wayland")) {
        qWarning() << "SpectrumWidget: running under XWayland with OpenGL — "
                      "GLX context issues may occur. Set QT_QPA_PLATFORM=wayland "
                      "or AETHER_NO_GPU=1 to work around (#1233)";
    }
#  endif
#else
    setAttribute(Qt::WA_OpaquePaintEvent);
#endif
    setSpectrumCursor(Qt::CrossCursor);
    setMouseTracking(true);

    // Floating overlay menu (child widget, stays on top)
    m_overlayMenu = new SpectrumOverlayMenu(this);
    m_overlayMenu->raise();

    m_tnfHoverPopup = new QLabel(this);
    m_tnfHoverPopup->setAttribute(Qt::WA_TransparentForMouseEvents);
    m_tnfHoverPopup->setMargin(6);
    m_tnfHoverPopup->hide();
    m_tnfHoverPopup->raise();

    m_interlockNotificationLabel = new QLabel(this);