PowerMaster/dataPanel/dpLineChart.cpp

#include "dpLineChart.h"
#include "dataManager.h"

//#define useDefaultAxis_Y //默认轴不可删除、不可左右移动，所以做动态管理尤其是动态排列时要考虑的比较复杂，可以采用不使用的策略，全部以自定义轴替代，默认轴（yAxis）只在初始化和没有实际数据轴（自定义）时显示用来做外观展示
dpLineChart::dpLineChart(QWidget* parent)
    :dpBaseChart(parent)
{
    setAttribute(Qt::WA_TranslucentBackground,true);

    m_pCustomPlot = new QCustomPlot(this);
    initQCP();

    m_timeRange = 60 * 1000;
    m_axisArrangementMode = AlternateSides;
    //m_showLegend = false;
    m_updateData = false;

    QBoxLayout* mainLayout = new QBoxLayout(QBoxLayout::LeftToRight);
    mainLayout->setContentsMargins(0, 1, 0, 0);
    mainLayout->addWidget(m_pCustomPlot);
    setLayout(mainLayout);

    connect(DataManager::instance(), &DataManager::dataUpdated, this, &dpLineChart::onSignal_dataUpdated);
}

dpLineChart::~dpLineChart()
{
}

void dpLineChart::initQCP()
{
    m_chartStyle.bgColor = Qt::transparent;
    m_chartStyle.axisColor = QColor(87, 100, 120);
    m_chartStyle.labelColor = QColor(250, 250, 250);
    m_chartStyle.labelFont = QFont("黑体", 12);
    m_chartStyle.tickColor = QColor(87, 100, 120);
    m_chartStyle.tickLabelColor = QColor(250, 250, 250);
    m_chartStyle.tickLabelFont = QFont("黑体", 12);
    m_chartStyle.gridPen = QPen(QColor(87, 100, 120), 1, Qt::DotLine);

    //m_pCustomPlot->axisRect()->setupFullAxesBox();
    m_pCustomPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
    m_pCustomPlot->axisRect()->setRangeDrag(Qt::Horizontal); //只允许x轴方向的拖拽
    double zoomFactor = m_pCustomPlot->axisRect()->rangeZoomFactor(Qt::Horizontal);
    m_pCustomPlot->axisRect()->setRangeZoomFactor(zoomFactor, 1); //只做x轴的缩放
    m_pCustomPlot->xAxis->setSubTicks(false);
    m_pCustomPlot->xAxis2->setTicks(false);
    m_pCustomPlot->xAxis2->setSubTicks(false);
    m_pCustomPlot->yAxis->setSubTicks(false);
    //m_pCustomPlot->yAxis->setVisible(false);
    //m_pCustomPlot->yAxis2->setTicks(false);
    m_pCustomPlot->yAxis2->setSubTicks(false);
    m_pCustomPlot->yAxis2->setVisible(false);
    connect(m_pCustomPlot->xAxis, qOverload<const QCPRange &>(&QCPAxis::rangeChanged), //rangeChanged有两个版本，qOverload可以指定版本
            this, &dpLineChart::onSignal_rangeChanged_xAxis);
    //背景颜色
    m_pCustomPlot->setBackground(QBrush(m_chartStyle.bgColor));
    //坐标轴颜色
    m_pCustomPlot->xAxis->setBasePen(m_chartStyle.axisColor);
    m_pCustomPlot->xAxis2->setBasePen(m_chartStyle.axisColor);
    m_pCustomPlot->yAxis->setBasePen(m_chartStyle.axisColor);
    m_pCustomPlot->yAxis2->setBasePen(m_chartStyle.axisColor);
    //坐标刻度颜色
    m_pCustomPlot->xAxis->setTickPen(QPen(m_chartStyle.tickColor));
    m_pCustomPlot->yAxis->setTickPen(QPen(m_chartStyle.tickColor));
    m_pCustomPlot->yAxis2->setTickPen(QPen(m_chartStyle.tickColor));
    //坐标刻度Label颜色
    m_pCustomPlot->xAxis->setTickLabelColor(m_chartStyle.tickLabelColor);
    m_pCustomPlot->xAxis->setTickLabelFont(m_chartStyle.tickLabelFont);
    m_pCustomPlot->yAxis->setTickLabelColor(m_chartStyle.tickLabelColor);
    m_pCustomPlot->yAxis->setTickLabelFont(m_chartStyle.tickLabelFont);
    m_pCustomPlot->yAxis2->setTickLabelColor(m_chartStyle.tickLabelColor);
    m_pCustomPlot->yAxis2->setTickLabelFont(m_chartStyle.tickLabelFont);
    m_pCustomPlot->yAxis->setTickLabels(false);
    //网格线颜色
    m_pCustomPlot->xAxis->grid()->setPen(m_chartStyle.gridPen);
    m_pCustomPlot->xAxis->grid()->setZeroLinePen(m_chartStyle.gridPen);
    //m_pCustomPlot->xAxis2->grid()->setPen(m_chartStyle.gridPen);
    m_pCustomPlot->yAxis->grid()->setPen(m_chartStyle.gridPen);
    m_pCustomPlot->yAxis->grid()->setZeroLinePen(m_chartStyle.gridPen);
    m_pCustomPlot->yAxis2->grid()->setPen(m_chartStyle.gridPen);
    //x轴用时间格式
    QSharedPointer<QCPAxisTickerDateTime> timeTicker(new QCPAxisTickerDateTime);
    timeTicker->setDateTimeFormat("hh:mm:ss");
    //qDebug() << timeTicker->dateTimeFormat();
    m_pCustomPlot->xAxis->setTicker(timeTicker);
    //qDebug() << m_pCustomPlot->xAxis->range();

    //Legend
    m_pCustomPlot->legend->setBrush(QBrush(QColor(255,255,255,12))); //背景透明
    m_pCustomPlot->legend->setBorderPen(QPen(QColor(255,255,255,0))); //边框透明
    m_pCustomPlot->legend->setFont(m_chartStyle.labelFont);
    m_pCustomPlot->legend->setTextColor( m_chartStyle.labelColor);
    //m_pCustomPlot->axisRect()->insetLayout()->setInsetAlignment(0, Qt::AlignRight|Qt::AlignTop);
}

void dpLineChart::arrangeAxes()
{
    QMap<QCPAxis::AxisType, int> axisTypeCounter;
    for(int i = 0; i < m_axes.size(); i++)
    {
        Axis& axis = m_axes[i];

        QCPAxis::AxisType position = axis.qAxis->axisType();
        if(m_axisArrangementMode == AlternateSides)
            position = (i % 2 == 0) ? QCPAxis::atLeft : QCPAxis::atRight;
        else if(m_axisArrangementMode == AllRight)
        {
            if(i == 0)
                position = QCPAxis::atLeft;
            else
                position = QCPAxis::atRight;
        }

        //更新位置，因为QCPAxis没有更新位置的结构，只能采用从plot中移除再添加的方式
        if(axis.qAxis->axisType() != position)
        {
            //因为要进行轴的移除再添加工作，所以其上相关的graph也要同步处理
            QVector<QCPGraph*> affectedGraphs;
            for(int j = 0; j < m_pCustomPlot->graphCount(); j++)
            {
                QCPGraph* graph = m_pCustomPlot->graph(j);
                if(graph->valueAxis() == axis.qAxis)
                    affectedGraphs.append(graph);
            }

            bool bRemoved = m_pCustomPlot->axisRect()->removeAxis(axis.qAxis);
            if(bRemoved) //removeAxis执行成功，被删除的axis会被delete
            {
                QCPAxis* qcpAxis = m_pCustomPlot->axisRect()->addAxis(position);
                axis.setQCPAxis(qcpAxis, false);

                for(QCPGraph* graph : affectedGraphs)
                    graph->setValueAxis(qcpAxis);
            }
        }

        //计算偏移量
        int offset = axisTypeCounter.value(position, 0) * 30;
        axis.qAxis->setOffset(offset);
        axisTypeCounter[position] = axisTypeCounter.value(position, 0) + 1;
    }
}

void dpLineChart::reLayoutLegend()
{
    /*if(!m_showLegend)
        return;

    //图例放在最右侧纵坐标轴的右侧
    //1.找到最右侧坐标轴
    QCPAxis* rightmostAxis = m_pCustomPlot->yAxis2;
    int offset = rightmostAxis->offset();
    QList<QCPAxis*> axes = m_pCustomPlot->axisRect()->axes(QCPAxis::atRight);
    for(QCPAxis* axis : axes)
    {
        if(axis->offset() > rightmostAxis->offset())
            rightmostAxis = axis;
    }
    //2.设置图例位置
    QCPLegend* legend = m_pCustomPlot->legend;*/
}

void dpLineChart::setTimeRange(TimeUnit unit)
{
    QSharedPointer<QCPAxisTicker> ticker = m_pCustomPlot->xAxis->ticker();
    QSharedPointer<QCPAxisTickerDateTime> dateTicker = qSharedPointerCast<QCPAxisTickerDateTime>(ticker);

    switch(unit)
    {
    case TU_Year:
    {
        m_timeRange = m_curDateTime.date().daysInYear() * 24 * 60 * 60 * (qint64)1000;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("dd/MM\nyyyy");
        break;
    }
    case TU_Month:
    {
        m_timeRange = m_curDateTime.date().daysInMonth() * 24 * 60 * 60 * (qint64)1000;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("dd/MM\nyyyy");
        break;
    }
    case TU_Day:
    {
        m_timeRange = 24 * 60 * 60 * 1000;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("dd/MM\nyyyy");
        break;
    }
    case TU_Hour:
    {
        m_timeRange = 60 * 60 *1000;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("hh:mm");
        break;
    }
    case TU_Minute_30:
    {
        m_timeRange = 30 * 60 *1000;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("hh:mm");
        break;
    }
    case TU_Minute_20:
    {
        m_timeRange = 20 * 60 *1000;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("hh:mm");
        break;
    }
    case TU_Minute_15:
    {
        m_timeRange = 15 * 60 *1000;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("hh:mm");
        break;
    }
    case TU_Minute_10:
    {
        m_timeRange = 10 * 60 *1000;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("hh:mm");
        break;
    }
    case TU_Minute_5:
    {
        m_timeRange = 5 * 60 *1000;
        break;
    }
    case TU_Minute_3:
    {
        m_timeRange = 3 * 60 *1000;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("hh:mm:ss");
        break;
    }
    case TU_Minute_1:
    {
        m_timeRange = 60 * 1000;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("hh:mm:ss");
        break;
    }
    case TU_Second_30:
    {
        m_timeRange = 30 * 1000;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("hh:mm:ss");
        break;
    }
    case TU_Second_10:
    {
        m_timeRange = 10 * 1000;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("hh:mm:ss");
        break;
    }
    case TU_Second_1:
    {
        m_timeRange = 1 * 1000;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("hh:mm:ss:zzz");
        break;
    }
    case TU_MSecond_500:
    {
        m_timeRange = 500;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("hh:mm:ss:zzz");
        break;
    }
    case TU_MSecond_100:
    {
        m_timeRange = 100;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("hh:mm:ss:zzz");
        break;
    }
    case TU_MSecond_50:
    {
        m_timeRange = 50;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("hh:mm:ss:zzz");
        break;
    }
    case TU_MSecond_10:
    {
        m_timeRange = 10;
        if(!dateTicker.isNull())
            dateTicker->setDateTimeFormat("hh:mm:ss:zzz");
        break;
    }
    default:
        break;
    }
}

void dpLineChart::setDateTime(const QDateTime& dateTime)
{
    qint64 timeValue = dateTime.toMSecsSinceEpoch() / 1000.0;
    //qint64 timeValue = QCPAxisTickerDateTime::dateTimeToKey(dateTime);
    m_curDateTime = dateTime;

    if(m_updateData)
    {
        //模拟数据展示
        /*static double min = 0, max = 10.0, marginFactor = 1.0;
        for(auto it = m_graphs.begin(); it != m_graphs.end(); ++it)
        {
            double randomFloat = min + QRandomGenerator::global()->generateDouble() * (max - min);
            //调整所在轴的范围
            QCPRange range = it.value().qGraph->valueAxis()->range();
            if(randomFloat > range.upper)
            {
                double upper = randomFloat + marginFactor;
                it.value().qGraph->valueAxis()->setRangeUpper(upper);
            }
            else if(randomFloat < range.lower)
            {
                double lower = randomFloat - marginFactor;
                it.value().qGraph->valueAxis()->setRangeLower(lower);
            }
            it.value().qGraph->addData(timeValue, randomFloat);
        }*/

        for(auto it = m_graphs.begin(); it != m_graphs.end(); ++it)
            DataManager::instance()->requestData(it.key(), this);
    }

    m_pCustomPlot->xAxis->setRange(timeValue, m_timeRange / 1000.0, Qt::AlignRight);
    m_pCustomPlot->replot();
}

void dpLineChart::viewHistoricalData(const QDateTime& dateTime)
{

}

void dpLineChart::synchronizeConfigData(const configurationResults& cfg)
{
    m_updateData = false; //停止更新数据
    //m_pCustomPlot->yAxis->setTickLabels(true);

    //1.Y坐标轴-数量由数据类型决定

    //将最新配置信息中的坐标轴相关数据存储在QHash中，有助于更好的判断当前坐标轴是否需要发生同步更新
    QHash<RealTimeDataType, AxisConfig> axisCfgMap;
    for(auto it = cfg.axisCfgMap.begin(); it != cfg.axisCfgMap.end(); ++it)
    {
        AxisConfig axisConfig;
        axisConfig.dataType = it.key();
        axisConfig.name = it.value().name;
        axisConfig.unit = it.value().unit;
        axisCfgMap.insert(it.key(), axisConfig);
    }

    //删除轴
    for(int i = 0; i < m_axes.size();)
    {
#ifdef useDefaultAxis_Y
        Axis& axis = m_axes[i];
        if(!axisCfgMap.contains(axis._cfg.dataType))
        {
            if(axis.qAxis != m_pCustomPlot->yAxis && axis.qAxis != m_pCustomPlot->yAxis2)
                m_pCustomPlot->axisRect()->removeAxis(axis.qAxis);
            else
                axis.qAxis->setVisible(false);

            m_axes.remove(i);
        }
        else
            i++;
#else
        Axis& axis = m_axes[i];
        if(!axisCfgMap.contains(axis._cfg.dataType))
        {
            //先删除轴上的Graph(注意先后顺序，QCustomPlot的removeGraph会析构graph，所以先做m_graphs的删除，或者改为QPointer智能指针可规避此问题)
            // for(auto it = m_graphs.begin(); it != m_graphs.end();)
            // {
            //     if(it.value().qGraph &&  it.value().qGraph->valueAxis() == axis.qAxis)
            //         it = m_graphs.erase(it); //使用erase方法可以更新迭代器，从而避免迭代器失效
            //     else
            //         ++it;
            // }
            for(int j = 0; j < m_pCustomPlot->graphCount();)
            {
                QCPGraph* graph = m_pCustomPlot->graph(j);
                if(graph->valueAxis() == axis.qAxis)
                {
                    m_pCustomPlot->removeGraph(graph); //removeGraph时graph会被delete
                }
                else
                    ++j;
            }
            QMutableHashIterator<QString, Graph> it(m_graphs); //使用QMutableHashIterator可以再遍历相关容器的同时安全的修改，例如删除元素
            while (it.hasNext())
            {
                it.next();
                if (it.value().qGraph.isNull()/*it.value().qGraph->valueAxis() == axis.qAxis*/) //利用QPointer特性保持数据同步
                {
                    //m_pCustomPlot->removeGraph(it.value().qGraph);
                    it.remove();  // 直接删除当前项，无需手动管理迭代器
                }
            }
            //删除轴
            m_pCustomPlot->axisRect()->removeAxis(axis.qAxis);
            m_axes.remove(i);
        }
        else
            ++i;
#endif
    }
    if(m_axes.isEmpty()) //若所有轴(数据类型)全部清楚,将默认左轴xAxis显示出来
        m_pCustomPlot->xAxis->setVisible(true);

    //处理应用配置(新增或更新)
    QHash<RealTimeDataType, Axis*> axesMap; //创建map类型变量,方便后续使用.QHash::insert()的第二个参数接收的是副本(引起拷贝),所以采用指针可以减少拷贝从而提升效率
    for(auto& axis : m_axes)
    {
        axesMap.insert(axis._cfg.dataType, &axis);
    }

    for(int i = 0; i < cfg.m_pModel_dataType->rowCount(); i++) //能保证和选取顺序一致
    //for(auto it = axisCfgMap.begin(); it != axisCfgMap.end(); ++it)
    {
        RealTimeDataType dataType = (RealTimeDataType)cfg.m_pModel_dataType->item(i, 0)->data(Qt::UserRole + itemRole_dataType).toInt();
        //RealTimeDataType dataType = it.key();
        if(axesMap.contains(dataType)) //更新配置
        {
            AxisConfig axisCfg = axisCfgMap.value(dataType);
            axesMap.value(dataType)->applyConfig(axisCfg);
        }
        else //新增轴
        {
#ifdef useDefaultAxis_Y
            AxisConfig cfg = axisCfgMap.value(dataType);
            Axis axis;
            if(m_axes.isEmpty()) //使用默认轴yAxis
            {
                axis.setQCPAxis(m_pCustomPlot->yAxis, true);
            }
            else if(m_axes.count() == 1 && m_axes.at(0).qAxis == m_pCustomPlot->yAxis) //默认轴yAxis被使用，使用yAxis2
            {
                axis.setQCPAxis(m_pCustomPlot->yAxis2, true);
                m_pCustomPlot->yAxis2->setVisible(false);
            }
            else
            {
                QCPAxis* pAxis = new QCPAxis(m_pCustomPlot->axisRect(), QCPAxis::atRight);
                axis.setQCPAxis(pAxis, false);
                axis.setStyle(m_chartStyle);
            }
            axis.applyConfig(cfg);
            m_axes.append(axis);
#else
            AxisConfig axisCfg = axisCfgMap.value(dataType);
            Axis axis;
            axis.applyConfig(axisCfg);
            axis.setStyle(m_chartStyle);
            if(m_axes.isEmpty())
            {
                //隐藏默认左轴
                m_pCustomPlot->yAxis->setVisible(false);
                //创建自定义轴代替
                //QCPAxis* pAxis = new QCPAxis(m_pCustomPlot->axisRect(), QCPAxis::atLeft);
                QCPAxis* pAxis = m_pCustomPlot->axisRect()->addAxis(QCPAxis::atLeft);
                if(!pAxis)
                    continue;
                //qDebug() << "add axis on:" << QCPAxis::atLeft << ", name: " << axisCfg.name;
                axis.setQCPAxis(pAxis, false);

            }
            else
            {
                //默认放在右边
                //QCPAxis* pAxis = new QCPAxis(m_pCustomPlot->axisRect(), QCPAxis::atRight);
                QCPAxis* pAxis = m_pCustomPlot->axisRect()->addAxis(QCPAxis::atRight);
                if(!pAxis)
                    continue;
                axis.setQCPAxis(pAxis, false);
            }
            m_axes.append(axis);
            //axesMap.insert(axis._cfg.dataType, &m_axes.last()); //临时变量axesMap通过做更新,此处不要直接使用&axis，因为axis是局部变量，地址会被自动释放，造成堆错误
#endif
        }
    }
    //更新axesMap
    axesMap.clear();
    for(auto& axis : m_axes)
    {
        axesMap.insert(axis._cfg.dataType, &axis);
    }

    //重新排列坐标轴
    m_axisArrangementMode = cfg.axisArrangement;
    arrangeAxes();

    //2.曲线-数据源决定
    //qDebug() << "m_graphs before update: " << m_graphs.keys();
    for(int i = 0; i < cfg.m_pModel_dataSource->rowCount(); i++)
    {
        QString stationID = cfg.m_pModel_dataSource->item(i, 0)->data(Qt::UserRole + itemRole_stationID).toString();
        QString compoentID = cfg.m_pModel_dataSource->item(i, 0)->data(Qt::UserRole + itemRole_componentID).toString();
        QString pointID = cfg.m_pModel_dataSource->item(i, 0)->data(Qt::UserRole + itemRole_pointID).toString();
        QString graphID = stationID + "-" + compoentID + "-" + pointID;
        //qDebug() << "update:" << graphID;

        QVariant colorData = cfg.m_pModel_dataSource->item(i, 0)->data(Qt::DecorationRole);

        if(!m_graphs.contains(graphID)) //新增数据
        {
            RealTimeDataType dataType = (RealTimeDataType)cfg.m_pModel_dataSource->item(i, 0)->data(Qt::UserRole + itemRole_dataType).toInt();
            QCPAxis* valueAxis = axesMap.value(dataType)->qAxis;
            if(valueAxis == nullptr)
                continue;

            Graph graph;
            graph.dataID = graphID;
            graph.dataType = dataType;
            graph.synchronizeTagging = "new";
            graph.name = cfg.m_pModel_dataSource->item(i, 0)->text();
            QCPGraph* newGraph = m_pCustomPlot->addGraph(m_pCustomPlot->xAxis, valueAxis);
            if(newGraph)
            {
                newGraph->setName(graph.name);
                if(colorData.isValid())
                {
                    QColor color = colorData.value<QColor>();
                    newGraph->setPen(QPen(color));
                }
                graph.qGraph = newGraph;
                m_graphs.insert(graphID, graph);

                //实时模拟数据
                DataManager::instance()->registerDataSource(graphID, [](){
                    static double min = 0, max = 10.0;
                    double randomFloat = min + QRandomGenerator::global()->generateDouble() * (max - min);
                    return QVariant::fromValue(randomFloat);
                });
            }
        }
        else //更新数据
        {
            //m_graphs.value(graphID).synchronizeTagging = "update";
            auto it = m_graphs.find(graphID);
            if(it != m_graphs.end())
            {
                if(colorData.isValid())
                {
                    QColor color = colorData.value<QColor>();
                    it.value().qGraph->setPen(QPen(color));
                }
                it.value().synchronizeTagging = "update";
            }
        }
    }
    //qDebug() << "m_graphs after update: " << m_graphs.keys();
    //没有标记的就是需要删除的
    QStringList keysToRemove;
    for(auto it = m_graphs.begin(); it != m_graphs.end(); ++it)
    {
        if(it.value().synchronizeTagging =="noTagging") //删除
            keysToRemove.append(it.key());
        else
            it.value().synchronizeTagging = "noTagging";
    }
    foreach (const QString& key, keysToRemove)
    {
        Graph g = m_graphs.take(key);
        if( !m_pCustomPlot->removeGraph(g.qGraph) )
            qWarning() << "Failed to remove gracloxne ph:" << key;
    }
    //qDebug() << "graph count: " << m_graphs.count() << ", " << m_pCustomPlot->graphCount();

    //Legend
    m_pCustomPlot->legend->setVisible(cfg.showLegend);

    m_updateData = true;
}

void dpLineChart::onSignal_rangeChanged_xAxis(const QCPRange& range)
{
    // qDebug() << "m_timeRange: " << m_timeRange;
    // qDebug() << "range size: " << range.size();
    if(m_timeRange != range.size() * 1000)
        m_timeRange = range.size() * 1000;
}

void dpLineChart::onSignal_dataUpdated(const QString& dataID, const QVariant& data, const QDateTime& timestamp)
{
    auto it = m_graphs.find(dataID);
    if(it != m_graphs.end())
    {
        static double marginFactor = 1.0;
        double dData = data.toDouble();
        //调整所在轴的范围
        QCPRange range = it.value().qGraph->valueAxis()->range();
        if(dData > range.upper)
        {
            double upper = dData + marginFactor;
            it.value().qGraph->valueAxis()->setRangeUpper(upper);
        }
        else if(dData < range.lower)
        {
            double lower = dData - marginFactor;
            it.value().qGraph->valueAxis()->setRangeLower(lower);
        }

        qint64 timeValue = timestamp.toMSecsSinceEpoch() / 1000.0;
        it.value().qGraph->addData(timeValue, dData);
    }
}