source: ntrip/trunk/BNC/src/rinex/availplot.cpp@ 4588

#include <qwt_symbol.h>
#include <qwt_plot_curve.h>
#include <qwt_scale_draw.h>
#include <qwt_text.h>

#include "availplot.h"
#include "reqcanalyze.h"

//
//////////////////////////////////////////////////////////////////////////////
class t_scaleDrawTime : public QwtScaleDraw {
 public:
  t_scaleDrawTime() {}
  virtual QwtText label(double mjd) const {
    bncTime epoTime; epoTime.setmjd(mjd);
    return QwtText(epoTime.timestr(0,':').c_str());
  }
};

//
//////////////////////////////////////////////////////////////////////////////
class t_scaleDrawPrn : public QwtScaleDraw {
 public:
  t_scaleDrawPrn() {}
  virtual QwtText label(double iPrn) const {
    return _yLabels[iPrn];
  }
  QMap<int, QString> _yLabels;
};

// Constructor
//////////////////////////////////////////////////////////////////////////////
t_availPlot::t_availPlot(QWidget* parent, 
                        QMap<QString, t_availData>* availDataMap) 
: QwtPlot(parent) {

  setCanvasBackground(QColor(Qt::white));

  // Axes
  // ----
  setAxisScaleDraw(QwtPlot::xBottom, new t_scaleDrawTime());
  setAxisLabelRotation(QwtPlot::xBottom, -50.0);
  setAxisLabelAlignment(QwtPlot::xBottom, Qt::AlignLeft | Qt::AlignBottom);

  t_scaleDrawPrn* scaleDrawPrn = new t_scaleDrawPrn();
  setAxisScaleDraw(QwtPlot::yLeft, scaleDrawPrn);

  // Curves
  // ------
  int iC = 0;
  QMapIterator<QString, t_availData > it(*availDataMap);
  while (it.hasNext()) {
    it.next();
    ++iC;
    const QString&         prn       = it.key();
    const t_availData&     availData = it.value();
    const QVector<double>& epochs    = availData._epoL1;

    scaleDrawPrn->_yLabels[iC] = prn;

    double xData[epochs.size()];
    double yData[epochs.size()];
    for (int ii = 0; ii < epochs.size(); ii++) {
      xData[ii] = epochs[ii];
      yData[ii] = iC;
    }

    QwtSymbol* symbol = new QwtSymbol( QwtSymbol::XCross );
    symbol->setSize( 4 );

    QwtPlotCurve* curve = new QwtPlotCurve(prn);
    curve->setSymbol( symbol );
    curve->setStyle( QwtPlotCurve::NoCurve );
    curve->setXAxis(QwtPlot::xBottom);
    curve->setYAxis(QwtPlot::yLeft);
    curve->setSamples(xData, yData, epochs.size());
    curve->attach(this);
  }
  
  QList<double> ticks[QwtScaleDiv::NTickTypes];
  QList<double> &majorTicks = ticks[QwtScaleDiv::MajorTick];
  for (int iPrn = 1; iPrn <= 32; iPrn++) {
    majorTicks << iPrn;
  }
  QwtScaleDiv yScaleDiv(majorTicks.first()-0.5, majorTicks.last()+0.5, ticks );
  setAxisScaleDiv(QwtPlot::yLeft, yScaleDiv);

  // Important !!!
  // -------------
  replot();
}