customformatter.h Example File | Qt Data Visualization 5.12.8

Qt 5.12 | Qt Data Visualization | Qt Quick 2 Axis Formatter Example | customformatter.h Example File

Qt Data Visualization | Commercial or GPLv3

# customformatter.h Example File

qmlaxisformatter/customformatter.h

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      ** Contact: https://www.qt.io/licensing/
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      ** This file is part of the Qt Data Visualization module of the Qt Toolkit.
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      #ifndef CUSTOMFORMATTER_H
      #define CUSTOMFORMATTER_H

      #include <QtDataVisualization/QValue3DAxisFormatter>
      #include <QtCore/QDateTime>
      #include <QtCore/QVector>

      using namespace QtDataVisualization;

      class CustomFormatter : public QValue3DAxisFormatter
      {
          Q_OBJECT

          Q_PROPERTY(QDate originDate READ originDate WRITE setOriginDate NOTIFY originDateChanged)
          Q_PROPERTY(QString selectionFormat READ selectionFormat WRITE setSelectionFormat NOTIFY selectionFormatChanged)
      public:
          explicit CustomFormatter(QObject *parent = 0);
          virtual ~CustomFormatter();

          virtual QValue3DAxisFormatter *createNewInstance() const;
          virtual void populateCopy(QValue3DAxisFormatter &copy) const;
          virtual void recalculate();
          virtual QString stringForValue(qreal value, const QString &format) const;

          QDate originDate() const;
          QString selectionFormat() const;

      public Q_SLOTS:
          void setOriginDate(const QDate &date);
          void setSelectionFormat(const QString &format);

      Q_SIGNALS:
          void originDateChanged(const QDate &date);
          void selectionFormatChanged(const QString &format);

      private:
          Q_DISABLE_COPY(CustomFormatter)

          QDateTime valueToDateTime(qreal value) const;

          QDate m_originDate;
          QString m_selectionFormat;
      };

      #endif