C++ QCustomPlot::setLocale方法代码示例

void MainWindow::initPlotter()
{
    QCustomPlot *cp = this->ui->plotter;
    cp->addGraph();
    cp->addGraph();
    cp->addGraph();
    cp->xAxis->setLabel("Epoch");
    cp->yAxis->setLabel("fitness");
    cp->graph(0)->setPen(QPen(Qt::blue));
    cp->graph(1)->setPen(QPen(Qt::red));
    cp->graph(2)->setPen(QPen(Qt::green));
    cp->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom | QCP::iSelectPlottables);
    cp->setLocale(QLocale(QLocale::Portuguese, QLocale::Brazil));
    cp->legend->setVisible(true);
}

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

    QCustomPlot *customPlot = (QCustomPlot*) (ui->graph);
    // set locale to english, so we get english month names:
      customPlot->setLocale(QLocale(QLocale::English, QLocale::UnitedKingdom));
      // seconds of current time, we'll use it as starting point in time for data:
      double now = QDateTime::currentDateTime().toTime_t();
      srand(8); // set the random seed, so we always get the same random data
      // create multiple graphs:
      for (int gi=0; gi<5; ++gi)
      {
        customPlot->addGraph();
        QPen pen;
        pen.setColor(QColor(0, 0, 255, 200));
        customPlot->graph()->setLineStyle(QCPGraph::lsLine);
        customPlot->graph()->setPen(pen);
        customPlot->graph()->setBrush(QBrush(QColor(255/4.0*gi,160,50,150)));
        // generate random walk data:
        QVector<double> time(250), value(250);
        for (int i=0; i<250; ++i)
        {
          time[i] = now + 24*3600*i;
          if (i == 0)
            value[i] = (i/50.0+1)*(rand()/(double)RAND_MAX-0.5);
          else
            value[i] = fabs(value[i-1])*(1+0.02/4.0*(4-gi)) + (i/50.0+1)*(rand()/(double)RAND_MAX-0.5);
        }
        customPlot->graph()->setData(time, value);
      }
      // configure bottom axis to show date and time instead of number:
      customPlot->xAxis->setTickLabelType(QCPAxis::ltDateTime);
      customPlot->xAxis->setDateTimeFormat("MMMM\nyyyy");
      // set a more compact font size for bottom and left axis tick labels:
      customPlot->xAxis->setTickLabelFont(QFont(QFont().family(), 8));
      customPlot->yAxis->setTickLabelFont(QFont(QFont().family(), 8));
      // set a fixed tick-step to one tick per month:
      customPlot->xAxis->setAutoTickStep(false);
      customPlot->xAxis->setTickStep(2628000); // one month in seconds
      customPlot->xAxis->setSubTickCount(3);
      // apply manual tick and tick label for left axis:
      customPlot->yAxis->setAutoTicks(false);
      customPlot->yAxis->setAutoTickLabels(false);
      customPlot->yAxis->setTickVector(QVector<double>() << 5 << 55);
      customPlot->yAxis->setTickVectorLabels(QVector<QString>() << "Not so\nhigh" << "Very\nhigh");
      // set axis labels:
      customPlot->xAxis->setLabel("Date");
      customPlot->yAxis->setLabel("Random wobbly lines value");
      // make top and right axes visible but without ticks and labels:
      customPlot->xAxis2->setVisible(true);
      customPlot->yAxis2->setVisible(true);
      customPlot->xAxis2->setTicks(false);
      customPlot->yAxis2->setTicks(false);
      customPlot->xAxis2->setTickLabels(false);
      customPlot->yAxis2->setTickLabels(false);
      // set axis ranges to show all data:
      customPlot->xAxis->setRange(now, now+24*3600*249);
      customPlot->yAxis->setRange(0, 60);
      // show legend:
      customPlot->legend->setVisible(true);
}

void ChartPage::setupChart()
{
  this->buildingChart=true;

  QCustomPlot *customPlot = ui->chartBlock;
  customPlot->setInteraction(QCP::iRangeDrag, true);
  customPlot->setInteraction(QCP::iSelectPlottables, true);
  customPlot->setInteraction(QCP::iSelectItems, true);
  customPlot->setInteraction(QCP::iRangeZoom, true);
  customPlot->legend->setVisible(true);
  customPlot->legend->setFont(QFont("Helvetica",9));
  // set locale to english, so we get english decimal separator:
  customPlot->setLocale(QLocale(QLocale::English, QLocale::UnitedKingdom));



  // create graph and assign data to it:
  customPlot->addGraph();
  customPlot->graph(0)->setName("Difficulty");
//  customPlot->graph(0)->setData(x, y);
  // give the axes some labels:
  customPlot->xAxis->setLabel("Date");
  customPlot->yAxis->setLabel("Difficulty");
  customPlot->legend->setSelectableParts(QCPLegend::spItems);
  customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom | QCP::iSelectAxes | QCP::iSelectLegend | QCP::iSelectPlottables);
  customPlot->axisRect()->setupFullAxesBox();
  customPlot->xAxis->setTickLabelType(QCPAxis::ltDateTime);
  customPlot->xAxis->setDateTimeFormat("dd/MM/yyyy");
  customPlot->xAxis->setAutoTickCount(5);
  //customPlot->yAxis->setAutoTickCount(5);

  // set axes ranges, so we see all data:
  customPlot->yAxis->setRange(-0.1, 3);

  ClientModel *model = this->clientModel;
  // generate some data:
  QVector<double> x(1000), y(1000); //, y1(50000);
  int maxBlocks;
  maxBlocks = model->getNumBlocks();

  if (maxBlocks > 1000)
  {
        maxBlocks=1000;
  }

  int i = 0;
  if (maxBlocks > 0) {
      for (i = 0; i < maxBlocks; i++)
      {
        CBlock blk = model->getBlock(i);
        CBlockIndex* cIndex = model->getBlockIndex(i);
        x[i]=blk.GetBlockTime();
        y[i]=model->getDiff(cIndex);
      }
      customPlot->graph(0)->setData(x, y);
      customPlot->xAxis->setRange(x[i-1]-(60*60*24), x[i-1]);
      this->lastBlockHeight = i;
  }



  customPlot->replot();
  this->buildingChart=false;

}