#include "plotwidget.h"
#include "ui_plotwidget.h"
#include <QDebug>
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
#  include <QDesktopWidget>
#endif
#include <QScreen>
#include <QMessageBox>
#include <QMetaEnum>

PlotWidget::PlotWidget(QWidget *parent) :
  QMainWindow(parent),
  ui(new Ui::PlotWidget)
{
  ui->setupUi(this);
  setGeometry(400, 250, 542, 390);
  setupItemDemo(ui->customPlot);
  statusBar()->clearMessage();
  ui->customPlot->replot();
}


void PlotWidget::setupItemDemo(QCustomPlot *customPlot)
{
  customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
  QCPGraph *graph = customPlot->addGraph();

  graph->setData(x, y);
  graph->setPen(QPen(Qt::blue));
  graph->rescaleKeyAxis();
  customPlot->yAxis->setRange(-1.45, 1.65);
  customPlot->xAxis->setRange(1,500);
  customPlot->xAxis->grid()->setZeroLinePen(Qt::NoPen);
}


void PlotWidget::appentDataDisplaySlot(double yValue)
{
  double secs = QCPAxisTickerDateTime::dateTimeToKey(QDateTime::currentDateTime());  


  if(0!=xNum)
  {
      y.append(yValue);
      x.insert(0,xNum);
      xNum--;
  }
  else
  {
      y.remove(0);
      y.append(yValue);
  }
  ui->customPlot->graph()->setData(x,y);
  ui->customPlot->replot();

  // calculate frames per second:
//  double key = secs;
//  static double lastFpsKey;
//  static int frameCount;
//  ++frameCount;
//  if (key-lastFpsKey > 2) // average fps over 2 seconds
//  {
//    ui->statusBar->showMessage(
//          QString("%1 FPS, Total Data points: %2")
//          .arg(frameCount/(key-lastFpsKey), 0, 'f', 0)
//          .arg(ui->customPlot->graph(0)->data()->size())
//          , 0);
//    lastFpsKey = key;
//    frameCount = 0;
//  }
}


PlotWidget::~PlotWidget()
{
  delete ui;
}

void PlotWidget::setPlotDataCount(int value)
{
    n = value;
}