/** Save FFT settings. */
void DockFft::saveSettings(QSettings *settings)
{
int intval;
if (!settings)
return;
settings->beginGroup("fft");
intval = fftSize();
if (intval != DEFAULT_FFT_SIZE)
settings->setValue("fft_size", intval);
else
settings->remove("fft_size");
intval = fftRate();
if (intval != DEFAULT_FFT_RATE)
settings->setValue("fft_rate", fftRate());
else
settings->remove("fft_rate");
if (ui->fftAvgSlider->value() != DEFAULT_FFT_AVG)
settings->setValue("averaging", ui->fftAvgSlider->value());
else
settings->remove("averaging");
if (ui->fftSplitSlider->value() != DEFAULT_FFT_SPLIT)
settings->setValue("split", ui->fftSplitSlider->value());
else
settings->remove("split");
QColor fftColor = ui->colorPicker->currentColor();
if (fftColor != QColor(0xFF,0xFF,0xFF,0xFF))
settings->setValue("pandapter_color", fftColor);
else
settings->remove("pandapter_color");
if (ui->fillButton->isChecked())
settings->setValue("pandapter_fill", true);
else
settings->remove("pandapter_fill");
if (ui->reflevelSlider->value() != DEFAULT_FFT_REF_LEVEL)
settings->setValue("reference_level", ui->reflevelSlider->value());
else
settings->remove("reference_level");
if (ui->rangeSlider->value() != DEFAULT_FFT_RANGE)
settings->setValue("fft_range", ui->rangeSlider->value());
else
settings->remove("fft_range");
settings->endGroup();
}
/*! \brief FFT rate changed. */
void DockFft::on_fftRateComboBox_currentIndexChanged(const QString & text)
{
int fps = fftRate();
Q_UNUSED(text);
emit fftRateChanged(fps);
}
/** Update RBW and FFT overlab labels */
void DockFft::updateInfoLabels(void)
{
float rate;
float size;
float rbw;
float ovr;
float sps;
if (m_sample_rate == 0.f)
return;
rate = fftRate();
size = fftSize();
rbw = m_sample_rate / size;
if (rbw < 1.e3f)
ui->fftRbwLabel->setText(QString("RBW: %1 Hz").arg(rbw, 0, 'f', 1));
else if (rbw < 1.e6f)
ui->fftRbwLabel->setText(QString("RBW: %1 kHz").arg(1.e-3 * rbw, 0, 'f', 1));
else
ui->fftRbwLabel->setText(QString("RBW: %1 MHz").arg(1.e-6 * rbw, 0, 'f', 1));
sps = size * rate;
if (sps <= m_sample_rate)
ovr = 0;
else
ovr = 100 * (sps / m_sample_rate - 1.f);
ui->fftOvrLabel->setText(QString("Overlap: %1%").arg(ovr, 0, 'f', 0));
}
/*! \brief Select new FFT rate in the combo box.
* \param rate The new rate.
* \returns The actual FFT rate selected.
*/
int DockFft::setFftRate(int fft_rate)
{
int idx = -1;
QString rate_str = QString("%1 fps").arg(fft_rate);
qDebug() << __func__ << "to" << rate_str;
idx = ui->fftRateComboBox->findText(rate_str, Qt::MatchExactly);
if(idx != -1)
ui->fftRateComboBox->setCurrentIndex(idx);
return fftRate();
}
