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/**
* Copyright (C) 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
*
* This file is part of the KD Chart library.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <QWidget>
#include <QStandardItemModel>
#include <QtSvg/QSvgGenerator>
#include <KChartChart>
#include <KChartBarDiagram>
#include <QApplication>
class ChartWidget : public QWidget {
Q_OBJECT
public:
explicit ChartWidget(QWidget* parent = nullptr)
: QWidget(parent)
{
m_model.insertRows( 0, 2, QModelIndex() );
m_model.insertColumns( 0, 3, QModelIndex() );
for (int row = 0; row < 3; ++row) {
for (int column = 0; column < 3; ++column) {
QModelIndex index = m_model.index(row, column, QModelIndex());
m_model.setData(index, QVariant(row+1 * column) );
/*
// show tooltips:
m_model.setData(index,
QString("<table>"
"<tr><td>Row</td><td>Column</td><td>Value</td></tr>"
"<tr><th>%1</th><th>%2</th><th>%3</th></tr></table>")
.arg(row).arg(column).arg(row+1 * column), Qt::ToolTipRole );
*/
}
}
/*
{
// show a comment at one data item:
const int row = 0;
const int column = 2;
const QModelIndex index = m_model.index(row, column, QModelIndex());
m_model.setData(
index,
QString("Value %1/%2: %3")
.arg( row )
.arg( column )
.arg( m_model.data( index ).toInt() ),
KChart::CommentRole );
}
*/
KChart::BarDiagram* diagram = new KChart::BarDiagram;
diagram->setModel(&m_model);
diagram->setPen( QPen( Qt::black, 0 ) );
m_chart.coordinatePlane()->replaceDiagram(diagram);
QVBoxLayout* l = new QVBoxLayout(this);
l->addWidget(&m_chart);
setLayout(l);
/*
// render chart to a SVG
QSvgGenerator generator;
generator.setFileName("/home/kdab/chart.svg");
generator.setSize(QSize(300, 300));
generator.setViewBox(QRect(0, 0, 300, 300));
generator.setTitle(tr("SVG Chart"));
QPainter painter;
painter.begin(&generator);
painter.setRenderHint(QPainter::Antialiasing);
m_chart.paint(&painter, generator.viewBox());
painter.end();
*/
}
private:
KChart::Chart m_chart;
QStandardItemModel m_model;
};
int main( int argc, char** argv ) {
QApplication app( argc, argv );
ChartWidget w;
w.show();
return app.exec();
}
#include "main.moc"
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