Merging qtgui branch-r9068:9837: this ads a qtgui_sink_c and qtgui_sink_f that displays the time, PSD, and spectrogram plots of a signal put into it. It requires qt4, qwt, and qwtplot3d and has not been tested on OSX.

git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@9853 221aa14e-8319-0410-a670-987f0aec2ac5

1 files changed, 619 insertions, 0 deletions

diff --git a/gr-qtgui/src/lib/spectrumdisplayform.cc b/gr-qtgui/src/lib/spectrumdisplayform.cc
new file mode 100644
index 000000000..481a55264
--- /dev/null
+++ b/gr-qtgui/src/lib/spectrumdisplayform.cc
@@ -0,0 +1,619 @@
+#include <cmath>
+#include <QColorDialog>
+#include <QMessageBox>
+#include <spectrumdisplayform.h>
+
+int SpectrumDisplayForm::_openGLWaterfall3DFlag = -1;
+
+SpectrumDisplayForm::SpectrumDisplayForm(QWidget* parent) : QDialog(parent){
+  setupUi(this);
+  
+  _systemSpecifiedFlag = false;
+  _intValidator = new QIntValidator(this);
+  _intValidator->setBottom(0);
+  _frequencyDisplayPlot = new FrequencyDisplayPlot(Tab1PlotDisplayFrame);
+  _waterfallDisplayPlot = new WaterfallDisplayPlot(Tab2PlotDisplayFrame);
+  _waterfall3DDisplayPlot = new Waterfall3DDisplayPlot(Waterfall3DPlotDisplayFrame);
+  _timeDomainDisplayPlot = new TimeDomainDisplayPlot(TimeDomainDisplayFrame);
+  _numRealDataPoints = 1024;
+  _realFFTDataPoints = new double[_numRealDataPoints];
+  _averagedValues = new double[_numRealDataPoints];
+  _historyVector = new std::vector<double*>;
+  
+  AvgLineEdit->setValidator(_intValidator);
+  PowerLineEdit->setValidator(_intValidator);
+  MinHoldCheckBox_toggled( false );
+  MaxHoldCheckBox_toggled( false );
+  
+  WaterfallMaximumIntensityWheel->setRange(-200, 0);
+  WaterfallMaximumIntensityWheel->setTickCnt(50);
+  WaterfallMinimumIntensityWheel->setRange(-200, 0);
+  WaterfallMinimumIntensityWheel->setTickCnt(50);
+  WaterfallMinimumIntensityWheel->setValue(-200);
+  
+  Waterfall3DMaximumIntensityWheel->setRange(-200, 0);
+  Waterfall3DMaximumIntensityWheel->setTickCnt(50);
+  Waterfall3DMinimumIntensityWheel->setRange(-200, 0);
+  Waterfall3DMinimumIntensityWheel->setTickCnt(50);
+  Waterfall3DMinimumIntensityWheel->setValue(-200);
+  
+  _peakFrequency = 0;
+  _peakAmplitude = -HUGE_VAL;
+  
+  _noiseFloorAmplitude = -HUGE_VAL;
+  
+  connect(_waterfallDisplayPlot, SIGNAL(UpdatedLowerIntensityLevel(const double)), _frequencyDisplayPlot, SLOT(SetLowerIntensityLevel(const double)));
+  connect(_waterfallDisplayPlot, SIGNAL(UpdatedUpperIntensityLevel(const double)), _frequencyDisplayPlot, SLOT(SetUpperIntensityLevel(const double)));
+  
+  _frequencyDisplayPlot->SetLowerIntensityLevel(-200);
+  _frequencyDisplayPlot->SetUpperIntensityLevel(-200);
+  
+  // Load up the acceptable FFT sizes...
+  FFTSizeComboBox->clear();
+  for(long fftSize = SpectrumGUIClass::MIN_FFT_SIZE; fftSize <= SpectrumGUIClass::MAX_FFT_SIZE; fftSize *= 2){
+    FFTSizeComboBox->insertItem(FFTSizeComboBox->count(), QString("%1").arg(fftSize));
+  }
+  Reset();
+}
+
+SpectrumDisplayForm::~SpectrumDisplayForm(){
+  // Qt deletes children when parent is deleted
+
+  // Don't worry about deleting Display Plots - they are deleted when parents are deleted
+  /*   delete _intValidator; */
+
+  delete[] _realFFTDataPoints;
+  delete[] _averagedValues;
+
+  for(unsigned int count = 0; count < _historyVector->size(); count++){
+    delete[] _historyVector->operator[](count);
+  }
+
+  delete _historyVector;
+}
+
+void SpectrumDisplayForm::setSystem( SpectrumGUIClass * newSystem, const uint64_t numFFTDataPoints, const uint64_t numTimeDomainDataPoints )
+{
+  ResizeBuffers(numFFTDataPoints, numTimeDomainDataPoints);
+  
+  if(newSystem != NULL){
+    _system = newSystem;
+    _systemSpecifiedFlag = true;
+  }
+  else{
+    _systemSpecifiedFlag = false;
+  }
+}
+
+void SpectrumDisplayForm::newFrequencyData( const SpectrumUpdateEvent* spectrumUpdateEvent)
+{
+  const std::complex<float>* complexDataPoints = spectrumUpdateEvent->getFFTPoints();
+  const uint64_t numFFTDataPoints = spectrumUpdateEvent->getNumFFTDataPoints();
+  const double* realTimeDomainDataPoints = spectrumUpdateEvent->getRealTimeDomainPoints();
+  const double* imagTimeDomainDataPoints = spectrumUpdateEvent->getImagTimeDomainPoints();
+  const uint64_t numTimeDomainDataPoints = spectrumUpdateEvent->getNumTimeDomainDataPoints();
+  const double timePerFFT = spectrumUpdateEvent->getTimePerFFT();
+  const timespec dataTimestamp = spectrumUpdateEvent->getDataTimestamp();;
+  const bool repeatDataFlag = spectrumUpdateEvent->getRepeatDataFlag();
+  const bool lastOfMultipleUpdatesFlag = spectrumUpdateEvent->getLastOfMultipleUpdateFlag();
+  const timespec generatedTimestamp = spectrumUpdateEvent->getEventGeneratedTimestamp();
+
+  // REMEMBER: The dataTimestamp is NOT valid when the repeat data flag is true...
+  ResizeBuffers(numFFTDataPoints, numTimeDomainDataPoints);
+
+  // Calculate the Magnitude of the complex point
+  const std::complex<float>* complexDataPointsPtr = complexDataPoints;
+  double* realFFTDataPointsPtr = _realFFTDataPoints;
+  for(uint64_t point = 0; point < numFFTDataPoints; point++){
+    // Calculate dBm
+    // 50 ohm load assumption
+    // 10 * log10 (v^2 / (2 * 50.0 * .001)) = 10 * log10( v^2 * 10)
+    // 75 ohm load assumption
+    // 10 * log10 (v^2 / (2 * 75.0 * .001)) = 10 * log10( v^2 * 15)
+    
+    *realFFTDataPointsPtr = 10.0*log10((((*complexDataPointsPtr).real() * (*complexDataPointsPtr).real()) + ((*complexDataPointsPtr).imag()*(*complexDataPointsPtr).imag())) + 1e-20);
+
+    complexDataPointsPtr++;
+    realFFTDataPointsPtr++;
+  }
+ 
+
+  // Don't update the averaging history if this is repeated data
+  if(!repeatDataFlag){
+    _AverageHistory(_realFFTDataPoints);
+
+    double sumMean;
+    const double fft_bin_size = (_stopFrequency-_startFrequency) / static_cast<double>(numFFTDataPoints);
+
+    // find the peak, sum (for mean), etc
+    _peakAmplitude = -HUGE_VAL;
+    sumMean = 0.0;
+    for(uint64_t number = 0; number < numFFTDataPoints; number++){
+      // find peak
+      if(_realFFTDataPoints[number] > _peakAmplitude){
+        _peakFrequency = (static_cast<float>(number) * fft_bin_size);  // Calculate the frequency relative to the local bw, adjust for _startFrequency later
+        _peakAmplitude = _realFFTDataPoints[number];
+        // _peakBin = number;
+      }
+      // sum (for mean)
+      sumMean += _realFFTDataPoints[number];
+    }
+
+    // calculate the spectral mean
+    // +20 because for the comparison below we only want to throw out bins
+    // that are significantly higher (and would, thus, affect the mean more)
+    const double meanAmplitude = (sumMean / numFFTDataPoints) + 20.0;
+
+    // now throw out any bins higher than the mean
+    sumMean = 0.0;
+    uint64_t newNumDataPoints = numFFTDataPoints;
+    for(uint64_t number = 0; number < numFFTDataPoints; number++){
+      if (_realFFTDataPoints[number] <= meanAmplitude)
+        sumMean += _realFFTDataPoints[number];
+      else
+        newNumDataPoints--;
+    }
+
+    if (newNumDataPoints == 0)             // in the odd case that all
+      _noiseFloorAmplitude = meanAmplitude; // amplitudes are equal!
+    else
+      _noiseFloorAmplitude = sumMean / newNumDataPoints;
+  }
+
+  if(lastOfMultipleUpdatesFlag){
+    _frequencyDisplayPlot->PlotNewData(_averagedValues, numFFTDataPoints, _noiseFloorAmplitude, _peakFrequency, _peakAmplitude);
+    _timeDomainDisplayPlot->PlotNewData(realTimeDomainDataPoints, imagTimeDomainDataPoints, numTimeDomainDataPoints);
+  }
+  // Don't update the repeated data for the waterfall
+  if(!repeatDataFlag){
+    _waterfallDisplayPlot->PlotNewData(_realFFTDataPoints, numFFTDataPoints, timePerFFT, dataTimestamp, spectrumUpdateEvent->getDroppedFFTFrames());
+    if( _openGLWaterfall3DFlag == 1 ){
+      _waterfall3DDisplayPlot->PlotNewData(_realFFTDataPoints, numFFTDataPoints, timePerFFT, dataTimestamp, spectrumUpdateEvent->getDroppedFFTFrames());
+    }
+  }
+  
+  // Tell the system the GUI has been updated
+  if(_systemSpecifiedFlag){
+    _system->SetLastGUIUpdateTime(generatedTimestamp);
+    _system->DecrementPendingGUIUpdateEvents();
+  }
+}
+
+void SpectrumDisplayForm::resizeEvent( QResizeEvent *e )
+{
+  // Let the actual window resize its width, but not its height
+  QSize newSize(e->size().width(), e->oldSize().height());
+  QResizeEvent et(newSize, e->oldSize());
+  QWidget::resizeEvent(&et);
+
+  // Tell the Tab Window to Resize
+  SpectrumTypeTab->resize( e->size().width(), SpectrumTypeTab->height());
+
+  // Tell the TabXFreqDisplay to resize
+  Tab1PlotDisplayFrame->resize(e->size().width()-4, Tab1PlotDisplayFrame->height());
+  Tab2PlotDisplayFrame->resize(e->size().width()-4, Tab2PlotDisplayFrame->height());
+  Waterfall3DPlotDisplayFrame->resize(e->size().width()-4, Waterfall3DPlotDisplayFrame->height());
+  TimeDomainDisplayFrame->resize(e->size().width()-4, TimeDomainDisplayFrame->height());
+  _frequencyDisplayPlot->resize( Tab1PlotDisplayFrame->width()-4, Tab1PlotDisplayFrame->height());
+  _waterfallDisplayPlot->resize( Tab2PlotDisplayFrame->width()-4, Tab2PlotDisplayFrame->height());
+  _waterfall3DDisplayPlot->resize( Waterfall3DPlotDisplayFrame->width()-4, Waterfall3DPlotDisplayFrame->height());
+  _timeDomainDisplayPlot->resize( TimeDomainDisplayFrame->width()-4, TimeDomainDisplayFrame->height());
+
+  // Move the IntensityWheels and Labels
+  WaterfallMaximumIntensityLabel->move(width() - 5 - WaterfallMaximumIntensityLabel->width(), WaterfallMaximumIntensityLabel->y());
+  WaterfallMinimumIntensityLabel->move(width() - 5 - WaterfallMinimumIntensityLabel->width(), WaterfallMinimumIntensityLabel->y());
+  WaterfallMaximumIntensityWheel->resize(WaterfallMaximumIntensityLabel->x() - 5 - WaterfallMaximumIntensityWheel->x(), WaterfallMaximumIntensityWheel->height());
+  WaterfallMinimumIntensityWheel->resize(WaterfallMinimumIntensityLabel->x() - 5 - WaterfallMinimumIntensityWheel->x(), WaterfallMinimumIntensityWheel->height());
+
+  Waterfall3DMaximumIntensityLabel->move(width() - 5 - Waterfall3DMaximumIntensityLabel->width(), Waterfall3DMaximumIntensityLabel->y());
+  Waterfall3DMinimumIntensityLabel->move(width() - 5 - Waterfall3DMinimumIntensityLabel->width(), Waterfall3DMinimumIntensityLabel->y());
+  Waterfall3DMaximumIntensityWheel->resize(Waterfall3DMaximumIntensityLabel->x() - 5 - Waterfall3DMaximumIntensityWheel->x(), Waterfall3DMaximumIntensityWheel->height());
+  Waterfall3DMinimumIntensityWheel->resize(Waterfall3DMinimumIntensityLabel->x() - 5 - Waterfall3DMinimumIntensityWheel->x(), Waterfall3DMinimumIntensityWheel->height());
+
+
+  // Move the Power Lbl
+  PowerLabel->move(e->size().width()-(415-324) - PowerLabel->width(), PowerLabel->y());
+
+  // Move the Power Line Edit
+  PowerLineEdit->move(e->size().width()-(415-318) - PowerLineEdit->width(), PowerLineEdit->y());
+
+  // Move the Avg Lbl
+  AvgLabel->move(e->size().width()-(415-406) - AvgLabel->width(), AvgLabel->y());
+
+  // Move the Avg Line Edit
+  AvgLineEdit->move(e->size().width()-(415-400) - AvgLineEdit->width(), AvgLineEdit->y());
+  
+  // Move the FFT Size Combobox and label
+  FFTSizeComboBox->move(width() - 5 - FFTSizeComboBox->width(), FFTSizeComboBox->y());
+  FFTSizeLabel->move(width() - 10 - FFTSizeComboBox->width() - FFTSizeLabel->width(), FFTSizeLabel->y());
+}
+
+
+void SpectrumDisplayForm::customEvent( QEvent * e)
+{
+  if(e->type() == QEvent::User+3){
+    if(_systemSpecifiedFlag){
+      WindowComboBox->setCurrentIndex(_system->GetWindowType());
+      FFTSizeComboBox->setCurrentIndex(_system->GetFFTSizeIndex());
+      //FFTSizeComboBox->setCurrentIndex(1);
+      PowerLineEdit_textChanged(PowerLineEdit->text());
+    }
+
+    waterfallMinimumIntensityChangedCB(WaterfallMinimumIntensityWheel->value());
+    waterfallMaximumIntensityChangedCB(WaterfallMaximumIntensityWheel->value());
+
+    waterfall3DMinimumIntensityChangedCB(Waterfall3DMinimumIntensityWheel->value());
+    waterfall3DMaximumIntensityChangedCB(Waterfall3DMaximumIntensityWheel->value());
+
+    // If the video card doesn't support OpenGL then don't display the 3D Waterfall
+    if(QGLFormat::hasOpenGL()){
+      // Check for Hardware Acceleration of the OpenGL
+      if(!_waterfall3DDisplayPlot->format().directRendering()){
+	// Only ask this once while the program is running...
+	if(_openGLWaterfall3DFlag == -1){
+	  _openGLWaterfall3DFlag = 0;
+	  if(QMessageBox::warning(this, "OpenGL Direct Rendering NOT Supported", "<center>The system's video card hardware or current drivers do not support direct hardware rendering of the OpenGL modules.</center><br><center>Software rendering is VERY processor intensive.</center><br><center>Do you want to use software rendering?</center>", QMessageBox::Yes, QMessageBox::No | QMessageBox::Default | QMessageBox::Escape) == QMessageBox::Yes){
+	    _openGLWaterfall3DFlag = 1;
+	  }
+	}
+      }
+      else{
+	_openGLWaterfall3DFlag = 1;
+      }
+    }
+
+    if(_openGLWaterfall3DFlag != 1){
+      SpectrumTypeTab->removeTab(SpectrumTypeTab->indexOf(Waterfall3DPage));
+    }
+
+    // Clear any previous display
+    Reset();
+
+    show();
+  }
+  else if(e->type() == 10005){
+    SpectrumUpdateEvent* spectrumUpdateEvent = (SpectrumUpdateEvent*)e;
+    newFrequencyData(spectrumUpdateEvent);
+  }
+  else if(e->type() == 10008){
+    setWindowTitle(((SpectrumWindowCaptionEvent*)e)->getLabel());
+  }
+  else if(e->type() == 10009){
+    Reset();
+    if(_systemSpecifiedFlag){
+      _system->ResetPendingGUIUpdateEvents();
+    }
+  }
+  else if(e->type() == 10010){
+    _startFrequency = ((SpectrumFrequencyRangeEvent*)e)->GetStartFrequency();
+    _stopFrequency = ((SpectrumFrequencyRangeEvent*)e)->GetStopFrequency();
+    _centerFrequency  = ((SpectrumFrequencyRangeEvent*)e)->GetCenterFrequency();
+
+    UseRFFrequenciesCB(UseRFFrequenciesCheckBox->isChecked());
+  }
+}
+
+void SpectrumDisplayForm::AvgLineEdit_textChanged( const QString &valueString )
+{
+  if(!valueString.isEmpty()){
+    int value = valueString.toInt();
+    if(value > 500){
+      value = 500;
+      AvgLineEdit->setText("500");
+    }
+    SetAverageCount(value);
+  }
+}
+
+
+void SpectrumDisplayForm::MaxHoldCheckBox_toggled( bool newState )
+{
+  MaxHoldResetBtn->setEnabled(newState);
+  _frequencyDisplayPlot->SetMaxFFTVisible(newState);
+  MaxHoldResetBtn_clicked();
+}
+
+
+void SpectrumDisplayForm::MinHoldCheckBox_toggled( bool newState )
+{
+  MinHoldResetBtn->setEnabled(newState);
+  _frequencyDisplayPlot->SetMinFFTVisible(newState);
+  MinHoldResetBtn_clicked();
+}
+
+
+void SpectrumDisplayForm::MinHoldResetBtn_clicked()
+{
+  _frequencyDisplayPlot->ClearMinData();
+  _frequencyDisplayPlot->replot();
+}
+
+
+void SpectrumDisplayForm::MaxHoldResetBtn_clicked()
+{
+  _frequencyDisplayPlot->ClearMaxData();
+  _frequencyDisplayPlot->replot();
+}
+
+
+void SpectrumDisplayForm::PowerLineEdit_textChanged( const QString &valueString )
+{
+  if(_systemSpecifiedFlag){
+    if(!valueString.isEmpty()){
+      double value = valueString.toDouble();
+      if(value < 1.0){
+	value = 1.0;
+	PowerLineEdit->setText("1");
+      }
+      _system->SetPowerValue(value);
+    }
+
+    if(_system->GetPowerValue() > 1){
+      UseRFFrequenciesCheckBox->setChecked(false);
+      UseRFFrequenciesCheckBox->setEnabled(false);
+      UseRFFrequenciesCB(false);
+    }
+    else{
+      UseRFFrequenciesCheckBox->setEnabled(true);
+    }
+  }
+}
+
+void SpectrumDisplayForm::SetFrequencyRange(const double newStartFrequency, const double newStopFrequency, const double newCenterFrequency){
+  _frequencyDisplayPlot->SetFrequencyRange(newStartFrequency, newStopFrequency, newCenterFrequency, UseRFFrequenciesCheckBox->isChecked());
+  _waterfallDisplayPlot->SetFrequencyRange(newStartFrequency, newStopFrequency, newCenterFrequency, UseRFFrequenciesCheckBox->isChecked());
+  _waterfall3DDisplayPlot->SetFrequencyRange(newStartFrequency, newStopFrequency, newCenterFrequency, UseRFFrequenciesCheckBox->isChecked());
+
+}
+
+int SpectrumDisplayForm::GetAverageCount(){
+  return _historyVector->size();
+}
+
+void SpectrumDisplayForm::SetAverageCount(const int newCount){
+  if(newCount > -1){
+    if(newCount != static_cast<int>(_historyVector->size())){
+      std::vector<double*>::iterator pos;
+      while(newCount < static_cast<int>(_historyVector->size())){
+	pos = _historyVector->begin();
+	delete[] (*pos);
+	_historyVector->erase(pos);
+      }
+
+      while(newCount > static_cast<int>(_historyVector->size())){
+	_historyVector->push_back(new double[_numRealDataPoints]);
+      }
+      AverageDataReset();
+    }
+  }
+}
+
+void SpectrumDisplayForm::_AverageHistory(const double* newBuffer){
+  if(_numRealDataPoints > 0){
+    if(_historyVector->size() > 0){
+      memcpy(_historyVector->operator[](_historyEntry), newBuffer, _numRealDataPoints*sizeof(double));
+
+      // Increment the next location to store data
+      _historyEntryCount++;
+      if(_historyEntryCount > static_cast<int>(_historyVector->size())){
+	_historyEntryCount = _historyVector->size();
+      }
+      _historyEntry = (++_historyEntry)%_historyVector->size();
+
+      // Total up and then average the values
+      double sum;
+      for(uint64_t location = 0; location < _numRealDataPoints; location++){
+	sum = 0;
+	for(int number = 0; number < _historyEntryCount; number++){
+	  sum += _historyVector->operator[](number)[location];
+	}
+ 	_averagedValues[location] = sum/static_cast<double>(_historyEntryCount);
+      }
+    }
+    else{
+      memcpy(_averagedValues, newBuffer, _numRealDataPoints*sizeof(double));
+    }
+  }
+}
+
+void SpectrumDisplayForm::ResizeBuffers( const uint64_t numFFTDataPoints, const uint64_t /*numTimeDomainDataPoints*/ ){
+  // Convert from Complex to Real for certain Displays
+  if(_numRealDataPoints != numFFTDataPoints){
+    _numRealDataPoints = numFFTDataPoints;
+    delete[] _realFFTDataPoints;
+    delete[] _averagedValues;
+    
+    _realFFTDataPoints = new double[_numRealDataPoints];
+    _averagedValues = new double[_numRealDataPoints];
+    memset(_realFFTDataPoints, 0x0, _numRealDataPoints*sizeof(double));
+    
+    const int historySize = _historyVector->size();
+    SetAverageCount(0); // Clear the existing history
+    SetAverageCount(historySize);
+    
+    Reset();
+  }
+}
+
+void SpectrumDisplayForm::Reset(){
+  AverageDataReset();
+
+  _waterfallDisplayPlot->Reset();
+  _waterfall3DDisplayPlot->Reset();
+}
+
+
+void SpectrumDisplayForm::AverageDataReset(){
+  _historyEntry = 0;
+  _historyEntryCount = 0;
+
+  memset(_averagedValues, 0x0, _numRealDataPoints*sizeof(double));
+
+  MaxHoldResetBtn_clicked();
+  MinHoldResetBtn_clicked();
+}
+
+
+void SpectrumDisplayForm::closeEvent( QCloseEvent *e )
+{
+  if(_systemSpecifiedFlag){
+    _system->SetWindowOpenFlag(false);
+  }
+
+  qApp->processEvents();
+
+  QWidget::closeEvent(e);
+}
+
+
+void SpectrumDisplayForm::WindowTypeChanged( int newItem )
+{
+  if(_systemSpecifiedFlag){
+   _system->SetWindowType(newItem);
+  }
+}
+
+
+void SpectrumDisplayForm::UseRFFrequenciesCB( bool useRFFlag )
+{
+  if(useRFFlag){
+    SetFrequencyRange(_startFrequency, _stopFrequency, _centerFrequency);
+  }
+  else{
+    SetFrequencyRange(_startFrequency, _stopFrequency, 0.0 );
+  }
+}
+
+
+void SpectrumDisplayForm::waterfallMaximumIntensityChangedCB( double newValue )
+{
+  if(newValue > WaterfallMinimumIntensityWheel->value()){
+    WaterfallMaximumIntensityLabel->setText(QString("%1 dB").arg(newValue, 0, 'f', 0));
+  }
+  else{
+    WaterfallMaximumIntensityWheel->setValue(WaterfallMinimumIntensityWheel->value());
+  }
+  _waterfallDisplayPlot->SetIntensityRange(WaterfallMinimumIntensityWheel->value(), WaterfallMaximumIntensityWheel->value());
+}
+
+
+void SpectrumDisplayForm::waterfallMinimumIntensityChangedCB( double newValue )
+{
+  if(newValue < WaterfallMaximumIntensityWheel->value()){
+    WaterfallMinimumIntensityLabel->setText(QString("%1 dB").arg(newValue, 0, 'f', 0));
+  }
+  else{
+    WaterfallMinimumIntensityWheel->setValue(WaterfallMaximumIntensityWheel->value());
+  }
+  _waterfallDisplayPlot->SetIntensityRange(WaterfallMinimumIntensityWheel->value(), WaterfallMaximumIntensityWheel->value());
+}
+
+void SpectrumDisplayForm::waterfall3DMaximumIntensityChangedCB( double newValue )
+{
+  if(newValue > Waterfall3DMinimumIntensityWheel->value()){
+    Waterfall3DMaximumIntensityLabel->setText(QString("%1 dB").arg(newValue, 0, 'f', 0));
+  }
+  else{
+    Waterfall3DMaximumIntensityWheel->setValue(Waterfall3DMinimumIntensityWheel->value());
+  }
+  _waterfall3DDisplayPlot->SetIntensityRange(Waterfall3DMinimumIntensityWheel->value(), Waterfall3DMaximumIntensityWheel->value());
+}
+
+
+void SpectrumDisplayForm::waterfall3DMinimumIntensityChangedCB( double newValue )
+{
+  if(newValue < Waterfall3DMaximumIntensityWheel->value()){
+    Waterfall3DMinimumIntensityLabel->setText(QString("%1 dB").arg(newValue, 0, 'f', 0));
+  }
+  else{
+    Waterfall3DMinimumIntensityWheel->setValue(Waterfall3DMaximumIntensityWheel->value());
+  }
+  _waterfall3DDisplayPlot->SetIntensityRange(Waterfall3DMinimumIntensityWheel->value(), Waterfall3DMaximumIntensityWheel->value());
+}
+
+
+void SpectrumDisplayForm::FFTComboBoxSelectedCB( const QString &fftSizeString )
+{
+  if(_systemSpecifiedFlag){
+    _system->SetFFTSize(fftSizeString.toLong());
+  }
+}
+
+
+void SpectrumDisplayForm::WaterfallAutoScaleBtnCB()
+{
+  double minimumIntensity = _noiseFloorAmplitude - 5;
+  if(minimumIntensity < WaterfallMinimumIntensityWheel->minValue()){
+    minimumIntensity = WaterfallMinimumIntensityWheel->minValue();
+  }
+  WaterfallMinimumIntensityWheel->setValue(minimumIntensity);
+  double maximumIntensity = _peakAmplitude + 10;
+  if(maximumIntensity > WaterfallMaximumIntensityWheel->maxValue()){
+    maximumIntensity = WaterfallMaximumIntensityWheel->maxValue();
+  }
+  WaterfallMaximumIntensityWheel->setValue(maximumIntensity);
+  waterfallMaximumIntensityChangedCB(maximumIntensity);
+}
+
+void SpectrumDisplayForm::Waterfall3DAutoScaleBtnCB()
+{
+  double minimumIntensity = _noiseFloorAmplitude - 5;
+  if(minimumIntensity < Waterfall3DMinimumIntensityWheel->minValue()){
+    minimumIntensity = Waterfall3DMinimumIntensityWheel->minValue();
+  }
+  Waterfall3DMinimumIntensityWheel->setValue(minimumIntensity);
+  double maximumIntensity = _peakAmplitude + 10;
+  if(maximumIntensity > Waterfall3DMaximumIntensityWheel->maxValue()){
+    maximumIntensity = Waterfall3DMaximumIntensityWheel->maxValue();
+  }
+  Waterfall3DMaximumIntensityWheel->setValue(maximumIntensity);
+  waterfallMaximumIntensityChangedCB(maximumIntensity);
+}
+
+void SpectrumDisplayForm::WaterfallIntensityColorTypeChanged( int newType )
+{
+  QColor lowIntensityColor;
+  QColor highIntensityColor;
+  if(newType == WaterfallDisplayPlot::INTENSITY_COLOR_MAP_TYPE_USER_DEFINED){
+    // Select the Low Intensity Color
+    lowIntensityColor = _waterfallDisplayPlot->GetUserDefinedLowIntensityColor();
+    if(!lowIntensityColor.isValid()){
+      lowIntensityColor = Qt::black;
+    }
+    QMessageBox::information(this, "Low Intensity Color Selection", "In the next window, select the low intensity color for the waterfall display",  QMessageBox::Ok);
+    lowIntensityColor = QColorDialog::getColor(lowIntensityColor, this);
+
+    // Select the High Intensity Color
+    highIntensityColor = _waterfallDisplayPlot->GetUserDefinedHighIntensityColor();
+    if(!highIntensityColor.isValid()){
+      highIntensityColor = Qt::white;
+    }
+    QMessageBox::information(this, "High Intensity Color Selection", "In the next window, select the high intensity color for the waterfall display",  QMessageBox::Ok);
+    highIntensityColor = QColorDialog::getColor(highIntensityColor, this);
+  }
+  _waterfallDisplayPlot->SetIntensityColorMapType(newType, lowIntensityColor, highIntensityColor);
+}
+
+void SpectrumDisplayForm::Waterfall3DIntensityColorTypeChanged( int newType )
+{
+  QColor lowIntensityColor;
+  QColor highIntensityColor;
+  if(newType == Waterfall3DDisplayPlot::INTENSITY_COLOR_MAP_TYPE_USER_DEFINED){
+    // Select the Low Intensity Color
+    lowIntensityColor = _waterfallDisplayPlot->GetUserDefinedLowIntensityColor();
+    if(!lowIntensityColor.isValid()){
+      lowIntensityColor = Qt::black;
+    }
+    QMessageBox::information(this, "Low Intensity Color Selection", "In the next window, select the low intensity color for the waterfall display",  QMessageBox::Ok);
+    lowIntensityColor = QColorDialog::getColor(lowIntensityColor, this);
+
+    // Select the High Intensity Color
+    highIntensityColor = _waterfallDisplayPlot->GetUserDefinedHighIntensityColor();
+    if(!highIntensityColor.isValid()){
+      highIntensityColor = Qt::white;
+    }
+    QMessageBox::information(this, "High Intensity Color Selection", "In the next window, select the high intensity color for the waterfall display",  QMessageBox::Ok);
+    highIntensityColor = QColorDialog::getColor(highIntensityColor, this);
+  }
+  _waterfall3DDisplayPlot->SetIntensityColorMapType(newType, lowIntensityColor, highIntensityColor);
+}