HG_REPOSITORIES/LPP/INSTRUMENTATION/USERS/JEANDET/qtcharts Commit - r2798:412d1b6b2a80

Add QXYSeries::replace(QVector<QPointF> points) overload....

Miikka Heikkinen -

r2798:412d1b6b2a80

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Context file:

r2798:412d1b6b2a80

examples/charts/qmloscilloscope/datasource.cpp +4 -3

                      if (m_index > m_data.count() - 1)
                          m_index = 0;
-                     QList<QPointF> points = m_data.at(m_index);
+                     QVector<QPointF> points = m_data.at(m_index);
                      // Use replace instead of clear + append, it's optimized for performance
                      xySeries->replace(points);
                  }
              void DataSource::generateData(int type, int rowCount, int colCount)
              {
                  // Remove previous data
-                 foreach (QList<QPointF> row, m_data)
+                 foreach (QVector<QPointF> row, m_data)
                      row.clear();
                  m_data.clear();
                  // Append the new data depending on the type
                  for (int i(0); i < rowCount; i++) {
-                     QList<QPointF> points;
+                     QVector<QPointF> points;
+                     points.reserve(colCount);
                      for (int j(0); j < colCount; j++) {
                          qreal x(0);
                          qreal y(0);

examples/charts/qmloscilloscope/datasource.h +1 -1

              private:
                  QQuickView *m_appViewer;
-                 QList<QList<QPointF> > m_data;
+                 QList<QVector<QPointF> > m_data;
                  int m_index;
              };

src/charts/xychart/qxyseries.cpp +15 -2

                Replaces the current points with \a points.
                \note This is much faster than replacing data points one by one,
                or first clearing all data, and then appending the new data. Emits QXYSeries::pointsReplaced()
-               when the points have been replaced.
+               when the points have been replaced. However, note that using the overload that takes
+               \c{QVector<QPointF>} as parameter is slightly faster than using this overload.
                \sa QXYSeries::pointsReplaced()
              */
              void QXYSeries::replace(QList<QPointF> points)
              {
+                 replace(points.toVector());
+             }
+             /*!
+               Replaces the current points with \a points.
+               \note This is much faster than replacing data points one by one,
+               or first clearing all data, and then appending the new data. Emits QXYSeries::pointsReplaced()
+               when the points have been replaced.
+               \sa QXYSeries::pointsReplaced()
+             */
+             void QXYSeries::replace(QVector<QPointF> points)
+             {
                  Q_D(QXYSeries);
-                 d->m_points = points.toVector();
+                 d->m_points = points;
                  emit pointsReplaced();
              }

src/charts/xychart/qxyseries.h +1 0

                  QColor pointLabelsColor() const;
                  void replace(QList<QPointF> points);
+                 void replace(QVector<QPointF> points);
              Q_SIGNALS:
                  void clicked(const QPointF &point);

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