main.cpp 范例文件

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(); }