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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]
}
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