50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
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#ifndef CURVEPLOTWIDGET_H
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#define CURVEPLOTWIDGET_H
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#include <QWidget>
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#include <QtCharts/QChart>
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#include <QtCharts/QChartView>
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#include <QtCharts/QLineSeries>
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#include <QtCharts/QValueAxis>
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#include <QtCharts/QDateTimeAxis>
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#include <QGraphicsLayout>
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#include <QDateTime>
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QT_BEGIN_NAMESPACE
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namespace QtCharts {
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class QChart;
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class QChartView;
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class QLineSeries;
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class QValueAxis;
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}
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QT_END_NAMESPACE
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class CurvePlotWidget : public QWidget
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{
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Q_OBJECT
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public:
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explicit CurvePlotWidget(QWidget *parent = nullptr);
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int addSeries(const QString &name, const QColor &color);
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void appendPoint(int seriesIndex, double yValue);
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protected:
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void changeEvent(QEvent *e) override;
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private:
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void initChart();
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void updateAxisRange();
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QtCharts::QChart *m_chart = nullptr;
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QtCharts::QChartView *m_view = nullptr;
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QList<QtCharts::QLineSeries*> m_series;
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QtCharts::QDateTimeAxis *m_axisX = nullptr; // 替换
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QtCharts::QValueAxis *m_axisY = nullptr;
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static constexpr int MAX_POINTS = 300;
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static constexpr int TIME_WINDOW_S = 300; // 600 秒 = 10 分钟
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int m_tick = 0;
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};
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#endif // CURVEPLOTWIDGET_H
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