1 files changed, 75 insertions, 0 deletions
diff --git a/examples/charts/chartsgallery/datetimeaxiswidget.cpp b/examples/charts/chartsgallery/datetimeaxiswidget.cpp
new file mode 100644
index 00000000..c71e7291
--- /dev/null
+++ b/examples/charts/chartsgallery/datetimeaxiswidget.cpp
@@ -0,0 +1,75 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+#include "datetimeaxiswidget.h"
+
+#include <QChart>
+#include <QDateTime>
+#include <QDateTimeAxis>
+#include <QFile>
+#include <QLineSeries>
+#include <QTextStream>
+#include <QValueAxis>
+
+DateTimeAxisWidget::DateTimeAxisWidget(QWidget *parent)
+    : ContentWidget(parent)
+{
+}
+
+bool DateTimeAxisWidget::doLoad()
+{
+    //![1]
+    auto series = new QLineSeries;
+    //![1]
+
+    //![2]
+    // data from http://www.swpc.noaa.gov/ftpdir/weekly/RecentIndices.txt
+    // http://www.swpc.noaa.gov/ftpdir/weekly/README
+    // http://www.weather.gov/disclaimer
+    QFile sunSpots(":sun_spots");
+    if (!sunSpots.open(QIODevice::ReadOnly | QIODevice::Text)) {
+        m_loadError = QStringLiteral("Failed to load '%1' file.").arg(sunSpots.fileName());
+        return false;
+    }
+
+    QTextStream stream(&sunSpots);
+    while (!stream.atEnd()) {
+        QString line = stream.readLine();
+        if (line.startsWith("#") || line.startsWith(":"))
+            continue;
+        QStringList values = line.split(QLatin1Char(' '), Qt::SkipEmptyParts);
+        QDateTime momentInTime;
+        momentInTime.setDate(QDate(values[0].toInt(), values[1].toInt() , 15));
+        series->append(momentInTime.toMSecsSinceEpoch(), values[2].toDouble());
+    }
+    sunSpots.close();
+    //![2]
+
+    //![3]
+    auto chart = new QChart;
+    chart->addSeries(series);
+    chart->legend()->hide();
+    chart->setTitle("Sunspots count (by Space Weather Prediction Center)");
+    //![3]
+
+    //![4]
+    auto axisX = new QDateTimeAxis;
+    axisX->setTickCount(10);
+    axisX->setFormat("MMM yyyy");
+    axisX->setTitleText("Date");
+    chart->addAxis(axisX, Qt::AlignBottom);
+    series->attachAxis(axisX);
+
+    auto axisY = new QValueAxis;
+    axisY->setLabelFormat("%i");
+    axisY->setTitleText("Sunspots count");
+    chart->addAxis(axisY, Qt::AlignLeft);
+    series->attachAxis(axisY);
+    //![4]
+
+    //![5]
+    createDefaultChartView(chart);
+    //![5]
+
+    return true;
+}