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>

  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;
      categories << "Jan" << "Feb" << "Mar" << "Apr" << "May" << "Jun" << "Jul" << "Aug" << "Sep" << "Oct" << "Nov" << "Dec";

      QBarCategoryAxis *axis = new QBarCategoryAxis();
      axis->append(categories);
      axis->setTitleText("Month");
      chart->createDefaultAxes();
      chart->setAxisX(axis, series);
      chart->axisY(series)->setRange(-52, 52);
      chart->axisY(series)->setTitleText("Temperature [&deg;C]");

      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();
  }