terminal/realtimeplot.cpp at master · Chen-GuanJie/terminal · GitHub

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#include "realtimeplot.h"
#include "ui_realtimeplot.h"

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

    mPlot = new QCustomPlot(this);
    ui->verticalLayout->addWidget(mPlot);
    // configure plot to have two right axes:
    mPlot->yAxis->setTickLabels(false);
    //connect(mPlot->yAxis2, SIGNAL(rangeChanged(QCPRange)), mPlot->yAxis, SLOT(setRange(QCPRange))); // left axis only mirrors inner right axis
    //mPlot->yAxis2->setVisible(true);
    mPlot->axisRect()->addAxis(QCPAxis::atRight);
    mPlot->axisRect()->axis(QCPAxis::atRight, 0)->setPadding(30); // add some padding to have space for tags
    mPlot->axisRect()->axis(QCPAxis::atRight, 1)->setPadding(30); // add some padding to have space for tags

    // create graphs:
    mGraph1 = mPlot->addGraph(mPlot->xAxis, mPlot->axisRect()->axis(QCPAxis::atRight, 0));
    //mGraph2 = mPlot->addGraph(mPlot->xAxis, mPlot->axisRect()->axis(QCPAxis::atRight, 1));
    mGraph1->setPen(QPen(QColor(250, 120, 0)));
    //mGraph2->setPen(QPen(QColor(0, 180, 60)));

    // create tags with newly introduced AxisTag class (see axistag.h/.cpp):
    mTag1 = new AxisTag(mGraph1->valueAxis());
    mTag1->setPen(mGraph1->pen());
    //mTag2 = new AxisTag(mGraph2->valueAxis());
    //mTag2->setPen(mGraph2->pen());

    connect(&mDataTimer, SIGNAL(timeout()), this, SLOT(timerSlot()));
    mDataTimer.start(50);
}

realtimeplot::~realtimeplot()
{
    delete ui;
}
void realtimeplot::set_data_source(uint16_t* source){
    this->source=source;
}

void realtimeplot::timerSlot()
{
    if(last_data!=*source){
    last_data=*source;

  // calculate and add a new data point to each graph:
  mGraph1->addData(mGraph1->dataCount(), *source);
  //mGraph2->addData(mGraph2->dataCount(), *source);
  //mGraph2->addData(mGraph2->dataCount(), qSin(mGraph2->dataCount()/20.0)-qSin(mGraph2->dataCount()/50.0/0.3843)*0.25);


  // make key axis range scroll with the data:
  mPlot->xAxis->rescale();
  mGraph1->rescaleValueAxis(false, true);
  //mGraph2->rescaleValueAxis(false, true);
  mPlot->xAxis->setRange(mPlot->xAxis->range().upper, 100, Qt::AlignRight);

  // update the vertical axis tag positions and texts to match the rightmost data point of the graphs:
  double graph1Value = mGraph1->dataMainValue(mGraph1->dataCount()-1);
  //double graph2Value = mGraph2->dataMainValue(mGraph2->dataCount()-1);
  mTag1->updatePosition(graph1Value);
  //mTag2->updatePosition(graph2Value);
  mTag1->setText(QString::number(graph1Value, 'f', 2));
  //mTag2->setText(QString::number(graph2Value, 'f', 2));

  mPlot->replot();
    }
}