diff options
Diffstat (limited to 'gr-qtgui/src/lib/TimeDomainDisplayPlot.cc')
| -rw-r--r-- | gr-qtgui/src/lib/TimeDomainDisplayPlot.cc | 125 |
1 files changed, 91 insertions, 34 deletions
diff --git a/gr-qtgui/src/lib/TimeDomainDisplayPlot.cc b/gr-qtgui/src/lib/TimeDomainDisplayPlot.cc index cb18b4418..c299f83a4 100644 --- a/gr-qtgui/src/lib/TimeDomainDisplayPlot.cc +++ b/gr-qtgui/src/lib/TimeDomainDisplayPlot.cc @@ -7,10 +7,37 @@ #include <qwt_legend.h> -class TimeDomainDisplayZoomer: public QwtPlotZoomer +class TimePrecisionClass { public: - TimeDomainDisplayZoomer(QwtPlotCanvas* canvas):QwtPlotZoomer(canvas) + TimePrecisionClass(const int timePrecision) + { + _timePrecision = timePrecision; + } + + virtual ~TimePrecisionClass() + { + } + + virtual unsigned int GetTimePrecision() const + { + return _timePrecision; + } + + virtual void SetTimePrecision(const unsigned int newPrecision) + { + _timePrecision = newPrecision; + } +protected: + unsigned int _timePrecision; +}; + + +class TimeDomainDisplayZoomer: public QwtPlotZoomer, public TimePrecisionClass +{ +public: + TimeDomainDisplayZoomer(QwtPlotCanvas* canvas, const unsigned int timePrecision) + : QwtPlotZoomer(canvas),TimePrecisionClass(timePrecision) { setTrackerMode(QwtPicker::AlwaysOn); } @@ -23,28 +50,37 @@ public: updateDisplay(); } + void SetUnitType(const std::string &type) + { + _unitType = type; + } + protected: virtual QwtText trackerText( const QwtDoublePoint& p ) const { - QwtText t(QString("Sample %1, %2 V").arg(p.x(), 0, 'f', 0).arg(p.y(), 0, 'f', 4)); + QwtText t(QString("%1 %2, %3 V").arg(p.x(), 0, 'f', GetTimePrecision()). + arg(_unitType.c_str()). + arg(p.y(), 0, 'f', 4)); return t; } + +private: + std::string _unitType; }; -TimeDomainDisplayPlot::TimeDomainDisplayPlot(QWidget* parent):QwtPlot(parent){ +TimeDomainDisplayPlot::TimeDomainDisplayPlot(QWidget* parent):QwtPlot(parent) +{ timespec_reset(&_lastReplot); resize(parent->width(), parent->height()); - _displayIntervalTime = (1.0/10.0); // 1/10 of a second between updates - _numPoints = 1024; _realDataPoints = new double[_numPoints]; _imagDataPoints = new double[_numPoints]; _xAxisPoints = new double[_numPoints]; - _zoomer = new TimeDomainDisplayZoomer(canvas()); + _zoomer = new TimeDomainDisplayZoomer(canvas(), 0); // Disable polygon clipping QwtPainter::setDeviceClipping(false); @@ -59,7 +95,7 @@ TimeDomainDisplayPlot::TimeDomainDisplayPlot(QWidget* parent):QwtPlot(parent){ setAxisScaleEngine(QwtPlot::xBottom, new QwtLinearScaleEngine); set_xaxis(0, _numPoints); - setAxisTitle(QwtPlot::xBottom, "Sample Number"); + setAxisTitle(QwtPlot::xBottom, "Time (sec)"); setAxisScaleEngine(QwtPlot::yLeft, new QwtLinearScaleEngine); set_yaxis(-2.0, 2.0); @@ -81,6 +117,7 @@ TimeDomainDisplayPlot::TimeDomainDisplayPlot(QWidget* parent):QwtPlot(parent){ memset(_imagDataPoints, 0x0, _numPoints*sizeof(double)); memset(_xAxisPoints, 0x0, _numPoints*sizeof(double)); + _sampleRate = 1; _resetXAxisPoints(); replot(); @@ -114,7 +151,8 @@ TimeDomainDisplayPlot::TimeDomainDisplayPlot(QWidget* parent):QwtPlot(parent){ legendDisplay->setItemMode(QwtLegend::CheckableItem); insertLegend(legendDisplay); - connect(this, SIGNAL( legendChecked(QwtPlotItem *, bool ) ), this, SLOT( LegendEntryChecked(QwtPlotItem *, bool ) )); + connect(this, SIGNAL( legendChecked(QwtPlotItem *, bool ) ), + this, SLOT( LegendEntryChecked(QwtPlotItem *, bool ) )); } TimeDomainDisplayPlot::~TimeDomainDisplayPlot(){ @@ -143,17 +181,7 @@ TimeDomainDisplayPlot::set_xaxis(double min, double max) void TimeDomainDisplayPlot::replot() { - const timespec startTime = get_highres_clock(); - QwtPlot::replot(); - - double differenceTime = (diff_timespec(get_highres_clock(), startTime)); - - differenceTime *= 99.0; - // Require at least a 10% duty cycle - if(differenceTime > (1.0/10.0)){ - _displayIntervalTime = differenceTime; - } } void @@ -164,10 +192,12 @@ TimeDomainDisplayPlot::resizeSlot( QSize *s ) void TimeDomainDisplayPlot::PlotNewData(const double* realDataPoints, const double* imagDataPoints, - const int64_t numDataPoints) + const int64_t numDataPoints, + const double timeInterval) { - if(numDataPoints > 0){ - + if((numDataPoints > 0) && + (diff_timespec(get_highres_clock(), _lastReplot) > timeInterval)) { + if(numDataPoints != _numPoints){ _numPoints = numDataPoints; @@ -185,34 +215,61 @@ void TimeDomainDisplayPlot::PlotNewData(const double* realDataPoints, _resetXAxisPoints(); } + memcpy(_realDataPoints, realDataPoints, numDataPoints*sizeof(double)); memcpy(_imagDataPoints, imagDataPoints, numDataPoints*sizeof(double)); - } + replot(); - // Allow at least a 50% duty cycle - if(diff_timespec(get_highres_clock(), _lastReplot) > _displayIntervalTime){ - // Only replot the screen if it is visible - if(isVisible()){ - replot(); - } _lastReplot = get_highres_clock(); } } -void TimeDomainDisplayPlot::SetImaginaryDataVisible(const bool visibleFlag){ +void TimeDomainDisplayPlot::SetImaginaryDataVisible(const bool visibleFlag) +{ _imag_plot_curve->setVisible(visibleFlag); } -void TimeDomainDisplayPlot::_resetXAxisPoints(){ +void TimeDomainDisplayPlot::_resetXAxisPoints() +{ + double delt = 1.0/_sampleRate; for(long loc = 0; loc < _numPoints; loc++){ - _xAxisPoints[loc] = loc; + _xAxisPoints[loc] = loc*delt; } - setAxisScale(QwtPlot::xBottom, 0, _numPoints); + setAxisScale(QwtPlot::xBottom, 0, _numPoints*delt); + + // Set up zoomer base for maximum unzoom x-axis + // and reset to maximum unzoom level + QwtDoubleRect zbase = _zoomer->zoomBase(); + zbase.setLeft(0); + zbase.setRight(_numPoints*delt); + _zoomer->zoom(zbase); + _zoomer->setZoomBase(zbase); + _zoomer->zoom(0); } -void TimeDomainDisplayPlot::LegendEntryChecked(QwtPlotItem* plotItem, bool on){ +void TimeDomainDisplayPlot::LegendEntryChecked(QwtPlotItem* plotItem, bool on) +{ plotItem->setVisible(!on); } +void +TimeDomainDisplayPlot::SetSampleRate(double sr, double units, + const std::string &strunits) +{ + double newsr = sr/units; + if(newsr != _sampleRate) { + _sampleRate = sr/units; + _resetXAxisPoints(); + + // While we could change the displayed sigfigs based on the unit being + // displayed, I think it looks better by just setting it to 4 regardless. + //double display_units = ceil(log10(units)/2.0); + double display_units = 4; + setAxisTitle(QwtPlot::xBottom, QString("Time (%1)").arg(strunits.c_str())); + ((TimeDomainDisplayZoomer*)_zoomer)->SetTimePrecision(display_units); + ((TimeDomainDisplayZoomer*)_zoomer)->SetUnitType(strunits); + } +} + #endif /* TIME_DOMAIN_DISPLAY_PLOT_C */ |