1 files changed, 91 insertions, 0 deletions
diff --git a/examples/charts/chartsgallery/stackeddrilldownwidget.cpp b/examples/charts/chartsgallery/stackeddrilldownwidget.cpp
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+++ b/examples/charts/chartsgallery/stackeddrilldownwidget.cpp
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+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+#include "stackeddrilldownchart.h"
+#include "stackeddrilldownseries.h"
+#include "stackeddrilldownwidget.h"
+
+#include <QBarSet>
+#include <QChart>
+#include <QRandomGenerator>
+
+StackedDrilldownWidget::StackedDrilldownWidget(QWidget *parent)
+    : ContentWidget(parent)
+{
+    //! [1]
+    auto drilldownChart = new StackedDrilldownChart;
+    drilldownChart->setAnimationOptions(QChart::SeriesAnimations);
+    //! [1]
+
+    //! [2]
+    // Define categories
+    const QStringList months = {
+        "May", "Jun", "Jul", "Aug", "Sep"
+    };
+    const QStringList weeks = {
+        "week 1", "week 2", "week 3", "week 4"
+    };
+    const QStringList plants = {
+        "Habanero", "Lemon Drop", "Starfish", "Aji Amarillo"
+    };
+    //! [2]
+
+    //! [3]
+    // Create drilldown structure
+    auto seasonSeries = new StackedDrilldownSeries(months, 320, drilldownChart);
+    seasonSeries->setName("Crop by month - Season (Click on bar to drill down)");
+
+    // Each month in season series has drilldown series for weekly data
+    for (int month = 0; month < months.count(); month++) {
+        // Create drilldown series for every week
+        auto weeklySeries = new StackedDrilldownSeries(weeks, 80, drilldownChart);
+        seasonSeries->mapDrilldownSeries(month, weeklySeries);
+
+        // Drilling down from weekly data brings us back to season data.
+        for (int week = 0; week < weeks.count(); week++) {
+            weeklySeries->mapDrilldownSeries(week, seasonSeries);
+            weeklySeries->setName(QString("Crop by week - " + months.at(month)));
+        }
+
+        // Use clicked signal to implement drilldown
+        QObject::connect(weeklySeries, &StackedDrilldownSeries::clicked,
+                         drilldownChart, &StackedDrilldownChart::handleClicked);
+    }
+
+    // Enable drilldown from season series using clicked signal
+    QObject::connect(seasonSeries, &StackedDrilldownSeries::clicked,
+                     drilldownChart, &StackedDrilldownChart::handleClicked);
+    //! [3]
+
+    //! [4]
+    // Fill monthly and weekly series with data
+    for (const QString &plant : plants) {
+        auto monthlyCrop = new QBarSet(plant);
+        for (int month = 0; month < months.count(); month++) {
+            auto weeklyCrop = new QBarSet(plant);
+            for (int week = 0; week < weeks.count(); week++)
+                *weeklyCrop << QRandomGenerator::global()->bounded(20);
+            // Get the drilldown series from season series and add crop to it.
+            seasonSeries->drilldownSeries(month)->append(weeklyCrop);
+            *monthlyCrop << weeklyCrop->sum();
+        }
+        seasonSeries->append(monthlyCrop);
+    }
+    //! [4]
+
+    //! [5]
+    // Show season series in initial view
+    drilldownChart->changeSeries(seasonSeries);
+    drilldownChart->setTitle(seasonSeries->name());
+    //! [5]
+
+    //! [6]
+    drilldownChart->axes(Qt::Horizontal).first()->setGridLineVisible(false);
+    drilldownChart->legend()->setVisible(true);
+    drilldownChart->legend()->setAlignment(Qt::AlignBottom);
+    //! [6]
+
+    //! [7]
+    createDefaultChartView(drilldownChart);
+    //! [7]
+}