Fil-Rouge/TimeLineWidget.cpp at master · Xaxetrov/Fil-Rouge · GitHub

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#include "TimeLineWidget.h"
#include "ui_Timelinewidget.h"
#include "WorldColors.h"
#include <QPainter>
#include <QColor>

#include <iostream>
using namespace std;

QVector<double> TimelineWidget::time;
QVector<double> TimelineWidget::population;
QVector<double> TimelineWidget::herbivoresPopulation;
QVector<double> TimelineWidget::carnivoresPopulation;

TimelineWidget::TimelineWidget(QWidget *parent) :
    QTabWidget(parent),
    ui(new Ui::TimelineWidget)
{
    ui->setupUi(this);

    isTimerStarted = false;
    initView();

    updateViewTimer = new QTimer(this);
    connect(updateViewTimer, SIGNAL(timeout()), this, SLOT(updateView()));
}

void TimelineWidget::paintEvent(QPaintEvent *event)
{
    if(!isTimerStarted)
    {
      updateView();

      // Refresh frequency is high at the begining and then slower.
      if(population.size() < 1000)
        updateViewTimer->start(200);
      else
        updateViewTimer->start(5000);

      isTimerStarted = true;
    }
}

void TimelineWidget::initView()
{
  // Set layout
  QVBoxLayout *layout = new QVBoxLayout;
  layout->addWidget(ui->customPlot);
  setLayout(layout);

  // Title
  ui->customPlot->plotLayout()->insertRow(0);
  ui->customPlot->plotLayout()->addElement(0, 0, new QCPPlotTitle(ui->customPlot, "Population"));

  // Legend
  ui->customPlot->xAxis->setLabel("Ticks");
  ui->customPlot->yAxis->setLabel("Population");
  ui->customPlot->legend->setVisible(true);
  QFont legendFont = font();
  legendFont.setPointSize(10);
  ui->customPlot->legend->setFont(legendFont);
  ui->customPlot->legend->setSelectedFont(legendFont);
  ui->customPlot->legend->setSelectableParts(QCPLegend::spItems); // legend box shall not be selectable, only legend items

  WorldColors colors;
  ui->customPlot->addGraph();
  ui->customPlot->graph(0)->setPen(QPen(QColor(144, 140, 140)));
  ui->customPlot->graph(0)->setBrush(QBrush(QColor(233, 233, 233)));
  ui->customPlot->graph(0)->setName("Total population");
  ui->customPlot->addGraph();
  ui->customPlot->graph(1)->setPen(QPen(Qt::green));
  ui->customPlot->graph(1)->setName("Herbivores");
  ui->customPlot->addGraph();
  ui->customPlot->graph(2)->setPen(QPen(Qt::red));
  ui->customPlot->graph(2)->setName("Carnivores");

  ui->customPlot->xAxis2->setVisible(true);
  ui->customPlot->xAxis2->setTickLabels(false);
  ui->customPlot->yAxis2->setVisible(true);
  ui->customPlot->yAxis2->setTickLabels(false);

  connect(ui->customPlot->xAxis, SIGNAL(rangeChanged(QCPRange)), ui->customPlot->xAxis2, SLOT(setRange(QCPRange)));
  connect(ui->customPlot->yAxis, SIGNAL(rangeChanged(QCPRange)), ui->customPlot->yAxis2, SLOT(setRange(QCPRange)));

  setWindowTitle("Timeline");
  ui->customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom | QCP::iSelectPlottables);
}

void TimelineWidget::updateView()
{
    if(!this->isVisible())
    {
      updateViewTimer->stop();
      isTimerStarted = false;
      return;
    }
    // Slow down refresh frequency
    if(population.size() == 1000)
    {
      updateViewTimer->stop();
      updateViewTimer->start(5000);
    }

    // If the number of points is greater than 1000, we only take the 1000 last.
    if(population.size() < 1000)
    {
      ui->customPlot->graph(0)->setData(time, population);
      ui->customPlot->graph(1)->setData(time, herbivoresPopulation);
      ui->customPlot->graph(2)->setData(time, carnivoresPopulation);
    }
    else
    {
      QVector<double> time_displayed;
      QVector<double> population_displayed;
      QVector<double> herbivoresPopulation_displayed;
      QVector<double> carnivoresPopulation_displayed;

      int size = population.size();
      for(int i = 0; i < 1000; i++)
      {
        time_displayed.append(time[i + size - 1000]);
        population_displayed.append(population[i + size - 1000]);
        herbivoresPopulation_displayed.append(herbivoresPopulation[i + size - 1000]);
        carnivoresPopulation_displayed.append(carnivoresPopulation[i + size - 1000]);
      }

      ui->customPlot->graph(0)->setData(time_displayed, population_displayed);
      ui->customPlot->graph(1)->setData(time_displayed, herbivoresPopulation_displayed);
      ui->customPlot->graph(2)->setData(time_displayed, carnivoresPopulation_displayed);
    }

    ui->customPlot->graph(0)->rescaleAxes();
    ui->customPlot->graph(1)->rescaleAxes(true);
    ui->customPlot->graph(2)->rescaleAxes(true);

    ui->customPlot->replot();
}

void TimelineWidget::updatePopulation(int herbivoresPopulation, int carnivoresPopulation, unsigned int time)
{
    // The data are updated very often at the beginning, then less.
    if(population.size() < 1000 || time % 300 == 0)
    {
      TimelineWidget::time.append(time);
      TimelineWidget::population.append(herbivoresPopulation + carnivoresPopulation);
      TimelineWidget::herbivoresPopulation.append(herbivoresPopulation);
      TimelineWidget::carnivoresPopulation.append(carnivoresPopulation);
    }
}

TimelineWidget::~TimelineWidget()
{
    delete ui;
    delete updateViewTimer;
}