PowerMaster/dataPanel/dpLineChart.h

#ifndef DPLINECHART_H
#define DPLINECHART_H

/*******************************************************************************
** DataPanel-LineChart
** author dsc
**
** 折线图展示面板，用来展示带有时序数据，可以和TimeLine等组件进行时间属性的交互
** 采用QCustomPlot实现
**
******************************************************************************/

#include "dpBaseChart.h"

class QCustomPlot;
class QCPRange;

class dpLineChart : public dpBaseChart
{
    Q_OBJECT

public:
    dpLineChart(QWidget *parent = nullptr);
    ~dpLineChart();

    void setTimeRange(TimeUnit) override;
    void setDateTime(const QDateTime&) override;
    void viewHistoricalData(const QDateTime&) override;

    void synchronizeConfigData(const configurationResults&) override;

public slots:
    void onSignal_rangeChanged_xAxis(const QCPRange&);
    void onSignal_dataUpdated(const QString& dataKey, const QVariant& data, const QDateTime& timestamp);

private:
    //处理关联图形的策略
    enum HandleGraphPolicy
    {
        Remove, //删除
        ReassignToOthrer //重新分配到其它坐标轴
    };

    struct Graph
    {
        QColor color;
        RealTimeDataType dataType;
        //QCPGraph* qGraph;
        QPointer<QCPGraph> qGraph;

        QString dataID;
        QString synchronizeTagging; //同步配置数据时的标记，new、update两种，没有的就是要被删除
        QString name; //用户legend图例展示用

        Graph()
        {
            dataID = "";
            //qGraph = nullptr;
            synchronizeTagging = "noTagging";
            name = "";
        }
    };

    void initQCP();
    void arrangeAxes();
    void reLayoutLegend();
    //void handleAssociatedGraphs();

    QCustomPlot* m_pCustomPlot;
    ChartStyle   m_chartStyle;
    qint64       m_timeRange;
    QDateTime    m_curDateTime;
    QVector<Axis> m_axes;
    QHash<QString, Graph> m_graphs;
    AxisArrangementMode m_axisArrangementMode;
    bool m_showLegend;
    bool m_updateData;
};

#endif