main.cpp Example File | Qt Charts 5.12.8

- Qt 5.12
- Qt Charts
- Donut Chart Breakdown Example
- main.cpp Example File
- Qt Charts | Commercial or GPLv3

# main.cpp Example File

donutbreakdown/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 <QtWidgets/QStatusBar>
     #include <QtCharts/QChartView>
     #include "donutbreakdownchart.h"

     QT_CHARTS_USE_NAMESPACE

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

         // Graph is based on data of 'Total consumption of energy increased by 10 per cent in 2010'
         // Statistics Finland, 13 December 2011
         // http://www.stat.fi/til/ekul/2010/ekul_2010_2011-12-13_tie_001_en.html

         QPieSeries *series1 = new QPieSeries();
         series1->setName("Fossil fuels");
         series1->append("Oil", 353295);
         series1->append("Coal", 188500);
         series1->append("Natural gas", 148680);
         series1->append("Peat", 94545);

         QPieSeries *series2 = new QPieSeries();
         series2->setName("Renewables");
         series2->append("Wood fuels", 319663);
         series2->append("Hydro power", 45875);
         series2->append("Wind power", 1060);

         QPieSeries *series3 = new QPieSeries();
         series3->setName("Others");
         series3->append("Nuclear energy", 238789);
         series3->append("Import energy", 37802);
         series3->append("Other", 32441);

         DonutBreakdownChart *donutBreakdown = new DonutBreakdownChart();
         donutBreakdown->setAnimationOptions(QChart::AllAnimations);
         donutBreakdown->setTitle("Total consumption of energy in Finland 2010");
         donutBreakdown->legend()->setAlignment(Qt::AlignRight);
         donutBreakdown->addBreakdownSeries(series1, Qt::red);
         donutBreakdown->addBreakdownSeries(series2, Qt::darkGreen);
         donutBreakdown->addBreakdownSeries(series3, Qt::darkBlue);

         QMainWindow window;
         QChartView *chartView = new QChartView(donutBreakdown);
         chartView->setRenderHint(QPainter::Antialiasing);
         window.setCentralWidget(chartView);
         window.resize(800, 500);
         window.show();

         return a.exec();
     }