samples_count.cpp

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#include "samples_count.h"
#include "ui_samples_count.h"
 
#include <QSpinBox>
 
SamplesCountFilter::SamplesCountFilter()
  : ui(new Ui::SamplesCount), _widget(new QWidget())
{
  ui->setupUi(_widget);
 
  connect(ui->spinBoxMilliseconds, qOverload<int>(&QSpinBox::valueChanged), this,
          [=](int) { emit parametersChanged(); });
}
 
SamplesCountFilter::~SamplesCountFilter()
{
  delete ui;
  delete _widget;
}
 
QWidget* SamplesCountFilter::optionsWidget()
{
  return _widget;
}
 
bool SamplesCountFilter::xmlSaveState(QDomDocument& doc,
                                      QDomElement& parent_element) const
{
  QDomElement widget_el = doc.createElement("options");
  widget_el.setAttribute("milliseconds", ui->spinBoxMilliseconds->value());
  parent_element.appendChild(widget_el);
  return true;
}
 
bool SamplesCountFilter::xmlLoadState(const QDomElement& parent_element)
{
  QDomElement widget_el = parent_element.firstChildElement("options");
  if (widget_el.isNull())
  {
    return false;
  }
  int ms = widget_el.attribute("milliseconds", "1000").toInt();
  ui->spinBoxMilliseconds->setValue(ms);
  return true;
}
 
std::optional<PJ::PlotData::Point> SamplesCountFilter::calculateNextPoint(size_t index)
{
  if (dataSource()->size() == 0)
  {
    return std::nullopt;
  }
 
  const auto& point = dataSource()->at(index);
  const double delta = 0.001 * double(ui->spinBoxMilliseconds->value());
  const double min_time = point.x - delta;
  auto min_index = dataSource()->getIndexFromX(min_time);
  return PJ::PlotData::Point{ point.x, double(index - min_index) };
}