1 | /**************************************************************************** |
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2 | ** |
3 | ** Copyright (C) 2016 The Qt Company Ltd. |
4 | ** Contact: https://www.qt.io/licensing/ |
5 | ** |
6 | ** This file is part of the Qt Charts module of the Qt Toolkit. |
7 | ** |
8 | ** $QT_BEGIN_LICENSE:GPL$ |
9 | ** Commercial License Usage |
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16 | ** |
17 | ** GNU General Public License Usage |
18 | ** Alternatively, this file may be used under the terms of the GNU |
19 | ** General Public License version 3 or (at your option) any later version |
20 | ** approved by the KDE Free Qt Foundation. The licenses are as published by |
21 | ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
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25 | ** |
26 | ** $QT_END_LICENSE$ |
27 | ** |
28 | ****************************************************************************/ |
29 | |
30 | #include "charts.h" |
31 | #include <QtCharts/QChart> |
32 | #include <QtCharts/QPieSeries> |
33 | |
34 | class PieChart: public Chart |
35 | { |
36 | public: |
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 | |
65 | DECLARE_CHART(PieChart) |
66 | |
67 |