diff options
Diffstat (limited to 'gr-qtgui/src/lib/FrequencyDisplayPlot.cc')
| -rw-r--r-- | gr-qtgui/src/lib/FrequencyDisplayPlot.cc | 52 |
1 files changed, 33 insertions, 19 deletions
diff --git a/gr-qtgui/src/lib/FrequencyDisplayPlot.cc b/gr-qtgui/src/lib/FrequencyDisplayPlot.cc index af705fb965..f2cde322ef 100644 --- a/gr-qtgui/src/lib/FrequencyDisplayPlot.cc +++ b/gr-qtgui/src/lib/FrequencyDisplayPlot.cc @@ -120,9 +120,8 @@ FrequencyDisplayPlot::FrequencyDisplayPlot(QWidget* parent) palette.setColor(canvas()->backgroundRole(), QColor("white")); canvas()->setPalette(palette); - setAxisScaleDraw(QwtPlot::xBottom, new FreqDisplayScaleDraw(0)); - setAxisScale(QwtPlot::xBottom, _startFrequency, _stopFrequency); setAxisTitle(QwtPlot::xBottom, "Frequency (Hz)"); + setAxisScaleDraw(QwtPlot::xBottom, new FreqDisplayScaleDraw(0)); _minYAxis = -120; _maxYAxis = 10; @@ -166,9 +165,6 @@ FrequencyDisplayPlot::FrequencyDisplayPlot(QWidget* parent) _maxFFTPoints[number] = -280.0; } - _resetXAxisPoints(); - - // set up peak marker QwtSymbol symbol; @@ -218,6 +214,9 @@ FrequencyDisplayPlot::FrequencyDisplayPlot(QWidget* parent) const QColor c(Qt::darkRed); _zoomer->setRubberBandPen(c); _zoomer->setTrackerPen(c); + + // Do this after the zoomer has been built + _resetXAxisPoints(); } FrequencyDisplayPlot::~FrequencyDisplayPlot() @@ -263,22 +262,26 @@ FrequencyDisplayPlot::SetFrequencyRange(const double constStartFreq, stopFreq = (stopFreq + centerFreq); } - _startFrequency = startFreq; - _stopFrequency = stopFreq; - _resetXAxisPoints(); + bool reset = false; + if((startFreq != _startFrequency) || (stopFreq != _stopFrequency)) + reset = true; - double display_units = ceil(log10(units)/2.0); - setAxisScale(QwtPlot::xBottom, _startFrequency, _stopFrequency); - setAxisScaleDraw(QwtPlot::xBottom, new FreqDisplayScaleDraw(display_units)); - setAxisTitle(QwtPlot::xBottom, QString("Frequency (%1)").arg(strunits.c_str())); - ((FreqDisplayZoomer*)_zoomer)->SetFrequencyPrecision(display_units); - ((FreqDisplayZoomer*)_zoomer)->SetUnitType(strunits); + if(stopFreq > startFreq) { + _startFrequency = startFreq; + _stopFrequency = stopFreq; + + if((axisScaleDraw(QwtPlot::xBottom) != NULL) && (_zoomer != NULL)){ + double display_units = ceil(log10(units)/2.0); + setAxisScaleDraw(QwtPlot::xBottom, new FreqDisplayScaleDraw(display_units)); + setAxisTitle(QwtPlot::xBottom, QString("Frequency (%1)").arg(strunits.c_str())); - // Load up the new base zoom settings - _zoomer->setZoomBase(); - - // Zooms back to the base and clears any other zoom levels - _zoomer->zoom(0); + if(reset) + _resetXAxisPoints(); + + ((FreqDisplayZoomer*)_zoomer)->SetFrequencyPrecision(display_units); + ((FreqDisplayZoomer*)_zoomer)->SetUnitType(strunits); + } + } } @@ -406,6 +409,17 @@ FrequencyDisplayPlot::_resetXAxisPoints() _xAxisPoints[loc] = freqValue; freqValue += fft_bin_size; } + + setAxisScale(QwtPlot::xBottom, _startFrequency, _stopFrequency); + + // Set up zoomer base for maximum unzoom x-axis + // and reset to maximum unzoom level + QwtDoubleRect zbase = _zoomer->zoomBase(); + zbase.setLeft(_startFrequency); + zbase.setRight(_stopFrequency); + _zoomer->zoom(zbase); + _zoomer->setZoomBase(zbase); + _zoomer->zoom(0); } void |