main.cpp Example File

temperaturerecords/main.cpp
 /****************************************************************************
 **
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the Qt Charts module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:GPL$
 ** Commercial License Usage
 ** Licensees holding valid commercial Qt licenses may use this file in
 ** accordance with the commercial license agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and The Qt Company. For licensing terms
 ** and conditions see https://www.qt.io/terms-conditions. For further
 ** information use the contact form at https://www.qt.io/contact-us.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3 or (at your option) any later version
 ** approved by the KDE Free Qt Foundation. The licenses are as published by
 ** the Free Software Foundation and appearing in the file LICENSE.GPL3
 ** included in the packaging of this file. Please review the following
 ** information to ensure the GNU General Public License requirements will
 ** be met: https://www.gnu.org/licenses/gpl-3.0.html.
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include <QtWidgets/QApplication>
 #include <QtWidgets/QMainWindow>
 #include <QtCharts/QChartView>
 #include <QtCharts/QBarSeries>
 #include <QtCharts/QBarSet>
 #include <QtCharts/QLegend>
 #include <QtCharts/QBarCategoryAxis>
 #include <QtCharts/QStackedBarSeries>
 #include <QtCharts/QValueAxis>

 QT_CHARTS_USE_NAMESPACE

 int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);

     QBarSet *low = new QBarSet("Min");
     QBarSet *high = new QBarSet("Max");

     *low << -52 << -50 << -45.3 << -37.0 << -25.6 << -8.0
          << -6.0 << -11.8 << -19.7 << -32.8 << -43.0 << -48.0;
     *high << 11.9 << 12.8 << 18.5 << 26.5 << 32.0 << 34.8
           << 38.2 << 34.8 << 29.8 << 20.4 << 15.1 << 11.8;

     QStackedBarSeries *series = new QStackedBarSeries();
     series->append(low);
     series->append(high);

     QChart *chart = new QChart();
     chart->addSeries(series);
     chart->setTitle("Temperature records in celcius");
     chart->setAnimationOptions(QChart::SeriesAnimations);

     QStringList categories = {
         "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
     };

     QBarCategoryAxis *axisX = new QBarCategoryAxis();
     axisX->append(categories);
     axisX->setTitleText("Month");
     chart->addAxis(axisX, Qt::AlignBottom);
     QValueAxis *axisY = new QValueAxis();
     axisY->setRange(-52, 52);
     axisY->setTitleText("Temperature [&deg;C]");
     chart->addAxis(axisY, Qt::AlignLeft);
     series->attachAxis(axisX);
     series->attachAxis(axisY);

     chart->legend()->setVisible(true);
     chart->legend()->setAlignment(Qt::AlignBottom);

     QChartView *chartView = new QChartView(chart);
     chartView->setRenderHint(QPainter::Antialiasing);

     QMainWindow window;
     window.setCentralWidget(chartView);
     window.resize(600, 300);
     window.show();

     return a.exec();
 }