piechart.cpp
57 lines
| 1.9 KiB
| text/x-c
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CppLexer
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r1753 | /**************************************************************************** | ||
** | ||||
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r2433 | ** Copyright (C) 2013 Digia Plc | ||
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r1753 | ** All rights reserved. | ||
** For any questions to Digia, please use contact form at http://qt.digia.com | ||||
** | ||||
** This file is part of the Qt Commercial Charts Add-on. | ||||
** | ||||
** $QT_BEGIN_LICENSE$ | ||||
** Licensees holding valid Qt Commercial licenses may use this file in | ||||
** accordance with the Qt Commercial License Agreement provided with the | ||||
** Software or, alternatively, in accordance with the terms contained in | ||||
** a written agreement between you and Digia. | ||||
** | ||||
** If you have questions regarding the use of this file, please use | ||||
** contact form at http://qt.digia.com | ||||
** $QT_END_LICENSE$ | ||||
** | ||||
****************************************************************************/ | ||||
#include "charts.h" | ||||
#include "qchart.h" | ||||
#include "qpieseries.h" | ||||
class PieChart: public Chart | ||||
{ | ||||
public: | ||||
QString name() { return QObject::tr("PieChart"); } | ||||
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r1864 | QString category() { return QObject::tr("PieSeries"); } | ||
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r1753 | QString subCategory() { return QString::null; } | ||
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r2099 | QChart *createChart(const DataTable &table) | ||
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r1753 | { | ||
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r2099 | QChart *chart = new QChart(); | ||
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r1753 | chart->setTitle("Pie chart"); | ||
qreal pieSize = 1.0 / table.count(); | ||||
for (int i = 0; i < table.count(); i++) { | ||||
QPieSeries *series = new QPieSeries(chart); | ||||
foreach (Data data, table[i]) { | ||||
QPieSlice *slice = series->append(data.second, data.first.y()); | ||||
if (data == table[i].first()) { | ||||
slice->setLabelVisible(); | ||||
slice->setExploded(); | ||||
} | ||||
} | ||||
qreal hPos = (pieSize / 2) + (i / (qreal) table.count()); | ||||
series->setPieSize(pieSize); | ||||
series->setHorizontalPosition(hPos); | ||||
series->setVerticalPosition(0.5); | ||||
chart->addSeries(series); | ||||
} | ||||
return chart; | ||||
} | ||||
}; | ||||
DECLARE_CHART(PieChart) | ||||