Method paintEvent

src/gui/VfoWidget.cpp:3028–3220

// ── S-Meter bar (custom paint) ────────────────────────────────────────────────

void VfoWidget::paintEvent(QPaintEvent* event)
{
    Q_UNUSED(event);

    QPainter p(this);
    p.setRenderHint(QPainter::Antialiasing, true);

    // Opaque dark background so passband shading doesn't bleed through
    p.setPen(Qt::NoPen);
    p.setBrush(QColor(0x0a, 0x0a, 0x14));
    p.drawRoundedRect(rect().adjusted(0, 0, -1, -1), 3, 3);

    // Subtle white overlay for depth
    p.setPen(QColor(255, 255, 255, 13));
    p.setBrush(QColor(255, 255, 255, 13));
    p.drawRoundedRect(rect().adjusted(0, 0, -1, -1), 3, 3);

    if (m_collapsed) {
        // ── Collapsed mode: draw slice badge and TX badge via painter ──────
        const int badgeSize = 20;
        const int margin = (width() - badgeSize) / 2;
        int yPos = 4;

        // Slice letter badge
        int sliceId = m_slice ? m_slice->sliceId() : 0;
        QRect badgeRect(margin, yPos, badgeSize, badgeSize);
        const QString rl = m_slice ? m_slice->letter() : QString();
        const int colourIdx = SliceLabel::displayColorIndex(sliceId, rl);
        p.setBrush(SliceColorManager::instance().activeColor(colourIdx));
        p.setPen(Qt::NoPen);
        p.drawRoundedRect(badgeRect, 3, 3);

        QFont badgeFont = p.font();
        badgeFont.setPixelSize(11);
        badgeFont.setBold(true);
        p.setFont(badgeFont);
        p.setPen(QColor(0, 0, 0));
        // Display follows the SliceLetterDisplay AppSettings option
        // (#2606): "Global" → plain global letter; "RadioIndexed" → the
        // per-client letter with a global-slice-id subscript.
        const QString radioLetter = m_slice ? m_slice->letter() : QString();
        SliceLabel::drawSliceBadge(p, badgeRect, sliceId, radioLetter);

        yPos += badgeSize + 2;

        // TX badge
        bool isTx = m_slice && m_slice->isTxSlice();
        QRect txRect(margin, yPos, badgeSize, 16);
        p.setPen(Qt::NoPen);
        p.setBrush(isTx ? QColor(0xcc, 0x00, 0x00) : QColor(0x40, 0x40, 0x40));
        p.drawRoundedRect(txRect, 2, 2);

        QFont txFont = p.font();
        txFont.setPixelSize(10);
        txFont.setBold(true);
        p.setFont(txFont);
        p.setPen(isTx ? QColor(0xff, 0xff, 0xff) : QColor(0x80, 0x80, 0x80));
        p.drawText(txRect, Qt::AlignCenter, "TX");