qpidplot.cpp

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#include "qpidplot.h"
#include "qpidcontroller.h"
#include "qwt_scale_draw.h"
#include "qpidplotzoomer.h"
#include "qwt_picker_machine.h"

class TimeScaleDraw: public QwtScaleDraw
{
public:
    TimeScaleDraw()
    {
    }
    virtual QwtText label(double v) const
    {
      QDateTime dt = QDateTime().fromTime_t((uint) v);
      return dt.toLocalTime().toString("hh:mm:ss");
    }
private:
    QTime baseTime;
};

QPidPlot::QPidPlot(QWidget *parent) :
  QwtPlot(parent),
//  m_Legend(NULL),
  m_Zoomer(NULL),
  m_Panner(NULL),
  m_Magnifier(NULL)/*,
  m_Measurer(NULL)*/,
  m_Controller()
{
  m_Zoomer = new QPidPlotZoomer(canvas());
//  m_Zoomer -> setSelectionFlags(QwtPicker::DragSelection | QwtPicker::CornerToCorner);
  m_Zoomer -> setStateMachine(new QwtPickerDragRectMachine);
  m_Zoomer -> setTrackerMode(QwtPicker::AlwaysOn);
  m_Zoomer -> setRubberBand(QwtPicker::RectRubberBand);

  m_Zoomer -> setMousePattern(QwtEventPattern::MouseSelect2,
                              Qt::LeftButton, Qt::ControlModifier | Qt::ShiftModifier);
  m_Zoomer -> setMousePattern(QwtEventPattern::MouseSelect3,
                              Qt::LeftButton, Qt::ControlModifier);

  m_Zoomer -> setEnabled(true);

  m_Panner = new QwtPlotPanner(canvas());
  m_Panner -> setEnabled(true);
  m_Panner -> setMouseButton(Qt::MidButton);
  m_Panner -> setAxisEnabled(QwtPlot::yRight, false);

  m_Magnifier = new QwtPlotMagnifier(canvas());
  m_Magnifier -> setEnabled(true);
  m_Magnifier -> setMouseButton(Qt::NoButton);
  m_Magnifier -> setAxisEnabled(QwtPlot::yRight, false);

  setAxisScaleDraw(QwtPlot::xBottom,
      new TimeScaleDraw());
}

void QPidPlot::init(QPidControllerWPtr ctl)
{
  m_Controller = ctl;
}

void QPidPlot::autoScale()
{
  setAxisAutoScale(QwtPlot::yLeft);

//  QPidControllerPtr ctl(m_Controller);

//  if (ctl) {
//    setAxisScale(QwtPlot::xBottom, 0, ctl->get_HistoryLength());
//  } else {
    setAxisAutoScale(QwtPlot::xBottom);
//  }

  m_Zoomer -> setZoomBase();
}

void QPidPlot::contextMenuEvent(QContextMenuEvent */*event*/)
{
  autoScale();
}