git.gag.com Git - debian/gnuradio/blob - gr-qtgui/src/lib/TimeDomainDisplayPlot.cc

   1 #ifndef TIME_DOMAIN_DISPLAY_PLOT_C
   2 #define TIME_DOMAIN_DISPLAY_PLOT_C
   3
   4 #include <TimeDomainDisplayPlot.h>
   5
   6 #include <qwt_scale_draw.h>
   7 #include <qwt_legend.h>
   8
   9
  10 class TimeDomainDisplayZoomer: public QwtPlotZoomer
  11 {
  12 public:
  13   TimeDomainDisplayZoomer(QwtPlotCanvas* canvas):QwtPlotZoomer(canvas)
  14   {
  15     setTrackerMode(QwtPicker::AlwaysOn);
  16   }
  17
  18   virtual ~TimeDomainDisplayZoomer(){
  19
  20   }
  21
  22   virtual void updateTrackerText(){
  23     updateDisplay();
  24   }
  25
  26 protected:
  27   virtual QwtText trackerText( const QwtDoublePoint& p ) const
  28   {
  29     QwtText t(QString("Sample %1, %2 V").arg(p.x(), 0, 'f', 0).arg(p.y(), 0, 'f', 4));
  30
  31     return t;
  32   }
  33 };
  34
  35 TimeDomainDisplayPlot::TimeDomainDisplayPlot(QWidget* parent):QwtPlot(parent)
  36 {
  37   timespec_reset(&_lastReplot);
  38
  39   resize(parent->width(), parent->height());
  40
  41   _numPoints = 1024;
  42   _realDataPoints = new double[_numPoints];
  43   _imagDataPoints = new double[_numPoints];
  44   _xAxisPoints = new double[_numPoints];
  45
  46   _zoomer = new TimeDomainDisplayZoomer(canvas());
  47
  48   // Disable polygon clipping
  49   QwtPainter::setDeviceClipping(false);
  50
  51   // We don't need the cache here
  52   canvas()->setPaintAttribute(QwtPlotCanvas::PaintCached, false);
  53   canvas()->setPaintAttribute(QwtPlotCanvas::PaintPacked, false);
  54
  55   QPalette palette;
  56   palette.setColor(canvas()->backgroundRole(), QColor("white"));
  57   canvas()->setPalette(palette);
  58
  59   setAxisScaleEngine(QwtPlot::xBottom, new QwtLinearScaleEngine);
  60   set_xaxis(0, _numPoints);
  61   setAxisTitle(QwtPlot::xBottom, "Sample Number");
  62
  63   setAxisScaleEngine(QwtPlot::yLeft, new QwtLinearScaleEngine);
  64   set_yaxis(-2.0, 2.0);
  65   setAxisTitle(QwtPlot::yLeft, "Normalized Voltage");
  66
  67   // Automatically deleted when parent is deleted
  68   _real_plot_curve = new QwtPlotCurve("Real Data");
  69   _real_plot_curve->attach(this);
  70   _real_plot_curve->setPen(QPen(Qt::blue));
  71   _real_plot_curve->setRawData(_xAxisPoints, _realDataPoints, _numPoints);
  72
  73   _imag_plot_curve = new QwtPlotCurve("Imaginary Data");
  74   _imag_plot_curve->attach(this);
  75   _imag_plot_curve->setPen(QPen(Qt::magenta));
  76   _imag_plot_curve->setRawData(_xAxisPoints, _imagDataPoints, _numPoints);
  77   // _imag_plot_curve->setVisible(false);
  78
  79   memset(_realDataPoints, 0x0, _numPoints*sizeof(double));
  80   memset(_imagDataPoints, 0x0, _numPoints*sizeof(double));
  81   memset(_xAxisPoints, 0x0, _numPoints*sizeof(double));
  82
  83   _resetXAxisPoints();
  84
  85   replot();
  86
  87 #if QT_VERSION < 0x040000
  88   _zoomer->setMousePattern(QwtEventPattern::MouseSelect2,
  89                           Qt::RightButton, Qt::ControlModifier);
  90 #else
  91   _zoomer->setMousePattern(QwtEventPattern::MouseSelect2,
  92                           Qt::RightButton, Qt::ControlModifier);
  93 #endif
  94   _zoomer->setMousePattern(QwtEventPattern::MouseSelect3,
  95                           Qt::RightButton);
  96
  97   _panner = new QwtPlotPanner(canvas());
  98   _panner->setAxisEnabled(QwtPlot::yRight, false);
  99   _panner->setMouseButton(Qt::MidButton);
 100
 101   // Avoid jumping when labels with more/less digits
 102   // appear/disappear when scrolling vertically
 103
 104   const QFontMetrics fm(axisWidget(QwtPlot::yLeft)->font());
 105   QwtScaleDraw *sd = axisScaleDraw(QwtPlot::yLeft);
 106   sd->setMinimumExtent( fm.width("100.00") );
 107
 108   const QColor c(Qt::darkRed);
 109   _zoomer->setRubberBandPen(c);
 110   _zoomer->setTrackerPen(c);
 111
 112   QwtLegend* legendDisplay = new QwtLegend(this);
 113   legendDisplay->setItemMode(QwtLegend::CheckableItem);
 114   insertLegend(legendDisplay);
 115
 116   connect(this, SIGNAL( legendChecked(QwtPlotItem *, bool ) ),
 117           this, SLOT( LegendEntryChecked(QwtPlotItem *, bool ) ));
 118 }
 119
 120 TimeDomainDisplayPlot::~TimeDomainDisplayPlot(){
 121   delete[] _realDataPoints;
 122   delete[] _imagDataPoints;
 123   delete[] _xAxisPoints;
 124
 125   // _fft_plot_curves deleted when parent deleted
 126   // _zoomer and _panner deleted when parent deleted
 127 }
 128
 129 void
 130 TimeDomainDisplayPlot::set_yaxis(double min, double max)
 131 {
 132   setAxisScale(QwtPlot::yLeft, min, max);
 133   _zoomer->setZoomBase();
 134 }
 135
 136 void
 137 TimeDomainDisplayPlot::set_xaxis(double min, double max)
 138 {
 139   setAxisScale(QwtPlot::xBottom, min, max);
 140   _zoomer->setZoomBase();
 141 }
 142
 143
 144 void TimeDomainDisplayPlot::replot()
 145 {
 146   QwtPlot::replot();
 147 }
 148
 149 void
 150 TimeDomainDisplayPlot::resizeSlot( QSize *s )
 151 {
 152   resize(s->width(), s->height());
 153 }
 154
 155 void TimeDomainDisplayPlot::PlotNewData(const double* realDataPoints,
 156                                         const double* imagDataPoints,
 157                                         const int64_t numDataPoints,
 158                                         const double timeInterval)
 159 {
 160   if((numDataPoints > 0) &&
 161      (diff_timespec(get_highres_clock(), _lastReplot) > timeInterval)) {
 162
 163     if(numDataPoints != _numPoints){
 164       _numPoints = numDataPoints;
 165
 166       delete[] _realDataPoints;
 167       delete[] _imagDataPoints;
 168       delete[] _xAxisPoints;
 169       _realDataPoints = new double[_numPoints];
 170       _imagDataPoints = new double[_numPoints];
 171       _xAxisPoints = new double[_numPoints];
 172
 173       _real_plot_curve->setRawData(_xAxisPoints, _realDataPoints, _numPoints);
 174       _imag_plot_curve->setRawData(_xAxisPoints, _imagDataPoints, _numPoints);
 175
 176       set_xaxis(0, numDataPoints);
 177
 178       _resetXAxisPoints();
 179     }
 180
 181     memcpy(_realDataPoints, realDataPoints, numDataPoints*sizeof(double));
 182     memcpy(_imagDataPoints, imagDataPoints, numDataPoints*sizeof(double));
 183
 184     replot();
 185
 186     _lastReplot = get_highres_clock();
 187   }
 188 }
 189
 190 void TimeDomainDisplayPlot::SetImaginaryDataVisible(const bool visibleFlag){
 191   _imag_plot_curve->setVisible(visibleFlag);
 192 }
 193
 194 void TimeDomainDisplayPlot::_resetXAxisPoints(){
 195   for(long loc = 0; loc < _numPoints; loc++){
 196     _xAxisPoints[loc] = loc;
 197   }
 198   setAxisScale(QwtPlot::xBottom, 0, _numPoints);
 199 }
 200
 201 void TimeDomainDisplayPlot::LegendEntryChecked(QwtPlotItem* plotItem, bool on){
 202   plotItem->setVisible(!on);
 203 }
 204
 205 #endif /* TIME_DOMAIN_DISPLAY_PLOT_C */