| 1 | /**************************************************************************** |
|---|---|
| 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 |
| 10 | ** Licensees holding valid commercial Qt licenses may use this file in |
| 11 | ** accordance with the commercial license agreement provided with the |
| 12 | ** Software or, alternatively, in accordance with the terms contained in |
| 13 | ** a written agreement between you and The Qt Company. For licensing terms |
| 14 | ** and conditions see https://www.qt.io/terms-conditions. For further |
| 15 | ** information use the contact form at https://www.qt.io/contact-us. |
| 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 |
| 22 | ** included in the packaging of this file. Please review the following |
| 23 | ** information to ensure the GNU General Public License requirements will |
| 24 | ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
| 25 | ** |
| 26 | ** $QT_END_LICENSE$ |
| 27 | ** |
| 28 | ****************************************************************************/ |
| 29 | |
| 30 | #include "charts.h" |
| 31 | #include <QtCharts/QChart> |
| 32 | #include <QtCharts/QPieSeries> |
| 33 | |
| 34 | class DonutChart: public Chart |
| 35 | { |
| 36 | public: |
| 37 | QString name() { return QObject::tr(s: "DonutChart"); } |
| 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("Donut chart"); |
| 45 | for (int i = 0, j = table.count(); i < table.count(); i++, j--) { |
| 46 | QPieSeries *series = new QPieSeries(chart); |
| 47 | foreach (Data data, table[i]) { |
| 48 | QPieSlice *slice = series->append(label: data.second, value: data.first.y()); |
| 49 | if (data == table[i].first()) |
| 50 | slice->setLabelVisible(); |
| 51 | } |
| 52 | series->setPieSize(j / (qreal) table.count()); |
| 53 | if (j > 1) |
| 54 | series->setHoleSize((j - 1) / (qreal) table.count() + 0.1); |
| 55 | series->setHorizontalPosition(0.5); |
| 56 | series->setVerticalPosition(0.5); |
| 57 | chart->addSeries(series); |
| 58 | } |
| 59 | return chart; |
| 60 | } |
| 61 | }; |
| 62 | |
| 63 | DECLARE_CHART(DonutChart) |
| 64 | |
| 65 |