Qt 5.8 | Qt Charts | OpenGL Accelerated Series Example | datasource.h Example File

Qt 5.8.0 Reference Documentation

# datasource.h Example File

openglseries/datasource.h

      /****************************************************************************
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      ** Copyright (C) 2016 The Qt Company Ltd.
      ** Contact: https://www.qt.io/licensing/
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      ** This file is part of the Qt Charts module of the Qt Toolkit.
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      #ifndef DATASOURCE_H
      #define DATASOURCE_H

      #include <QtCore/QObject>
      #include <QtCharts/QXYSeries>
      #include <QtWidgets/QLabel>
      #include <QtCore/QElapsedTimer>
      #include <QtCore/QTimer>

      QT_CHARTS_USE_NAMESPACE

      class DataSource : public QObject
      {
          Q_OBJECT
      public:
          explicit DataSource(QObject *parent = 0);

          void startUpdates(const QList<QXYSeries *> &seriesList, QLabel *fpsLabel);

      public slots:
          void generateData(int seriesCount, int rowCount, int colCount);
          void update(QAbstractSeries *series, int seriesIndex);
          void handleSceneChanged();
          void updateAllSeries();

      private:
          QVector<QVector<QVector<QPointF> > > m_data;
          int m_index;
          QList<QXYSeries *> m_seriesList;
          QLabel *m_fpsLabel;
          QElapsedTimer m_fpsTimer;
          QTimer m_dataUpdater;
      };

      #endif // DATASOURCE_H