Method drawBarsGrid

src/gui/WaveformWidget.cpp:753–795

}

void WaveformWidget::drawBarsGrid(QPainter& painter, const QRectF& plotRect) const
{
    painter.save();

    if (showGrid()) {
        painter.setPen(QPen(kGridMinor(), 1.0));
        for (int i = 0; i <= 10; ++i) {
            const qreal x = plotRect.left() + plotRect.width() * i / 10.0;
            painter.drawLine(QPointF(x, plotRect.top()),
                             QPointF(x, plotRect.bottom()));
        }
    }

    const int refs[] = {0, -6, -12, -24, -48};

    QFont labelFont = font();
    labelFont.setPointSizeF(std::max(7.0, labelFont.pointSizeF() - 2.0));
    painter.setFont(labelFont);

    for (int db : refs) {
        const qreal rawHeight = dbToAmplitude(static_cast<float>(db)) * m_amplitudeZoom * plotRect.height();
        if (db <= -48 && rawHeight < 3.0)
            continue;
        const qreal y = plotRect.bottom() - std::min(rawHeight, plotRect.height());

        painter.setPen(QPen(db >= -12 ? kGridMajor() : kGridMinor(), 1.0));
        painter.drawLine(QPointF(plotRect.left(), y), QPointF(plotRect.right(), y));

        painter.setPen(kMutedLabel());
        painter.drawText(QRectF(plotRect.right() + 4.0, y - 7.0,
                                width() - plotRect.right() - 5.0, 14.0),
                         Qt::AlignLeft | Qt::AlignVCenter,
                         QString::number(db));
    }

    painter.setPen(kMutedLabel());
    painter.drawText(QRectF(plotRect.right() + 4.0, plotRect.bottom() - 12.0,
                            width() - plotRect.right() - 5.0, 12.0),
                     Qt::AlignLeft | Qt::AlignVCenter,
                     QStringLiteral("dBFS"));

    painter.restore();
}

void WaveformWidget::drawGrid(QPainter& painter,
                              const QRectF& plotRect,