SmartFanMonitor/chartmanager.cpp at main · Dragon-998/SmartFanMonitor · GitHub

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#include "chartmanager.h"

ChartManager::ChartManager(QChartView *view, QObject *parent)
    : QObject(parent)
    , timeCount(0)
{
    line = new QLineSeries(this);
    line->setName("温度");

    chart = new QChart();
    chart->addSeries(line);
    chart->setTitle("实时温度曲线");

    axisX = new QValueAxis(this);
    axisY = new QValueAxis(this);
    axisX->setRange(0,30);
    axisY->setRange(0,60);
    axisX->setTickCount(6);
    axisY->setTickCount(7);
    axisX->setTitleText("时间 /s");
    axisY->setTitleText("温度 /℃");
    chart->addAxis(axisX,Qt::AlignBottom);
    chart->addAxis(axisY,Qt::AlignLeft);
    line->attachAxis(axisX);
    line->attachAxis(axisY);

    view->setChart(chart);
    view->setRenderHint(QPainter::Antialiasing);
}

//添加点
void ChartManager::addPoint(double temp)
{
    line->append(timeCount,temp);
    if(timeCount > 30){
        axisX->setRange(timeCount-30,timeCount);
    }
    timeCount++;
}

//清零，回初始值
void ChartManager::clear()
{
    line->clear();
    timeCount = 0;
    axisX->setRange(0,30);
}