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3** Copyright (C) 2016 The Qt Company Ltd.
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6** This file is part of the Qt Charts module of the Qt Toolkit.
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29
30#include "charts.h"
31#include <QtCharts/QChart>
32#include <QtCharts/QPieSeries>
33
34class PieChart: public Chart
35{
36public:
37 QString name() { return QObject::tr(s: "PieChart"); }
38 QString category() { return QObject::tr(s: "PieSeries"); }
39 QString subCategory() { return QString(); }
40
41 QChart *createChart(const DataTable &table)
42 {
43 QChart *chart = new QChart();
44 chart->setTitle("Pie chart");
45 qreal pieSize = 1.0 / table.count();
46 for (int i = 0; i < table.count(); i++) {
47 QPieSeries *series = new QPieSeries(chart);
48 foreach (Data data, table[i]) {
49 QPieSlice *slice = series->append(label: data.second, value: data.first.y());
50 if (data == table[i].first()) {
51 slice->setLabelVisible();
52 slice->setExploded();
53 }
54 }
55 qreal hPos = (pieSize / 2) + (i / (qreal) table.count());
56 series->setPieSize(pieSize);
57 series->setHorizontalPosition(hPos);
58 series->setVerticalPosition(0.5);
59 chart->addSeries(series);
60 }
61 return chart;
62 }
63};
64
65DECLARE_CHART(PieChart)
66
67

source code of qtcharts/tests/manual/chartviewer/charts/pieseries/piechart.cpp