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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 <QStandardItemModel>
#include <QPushButton>
#include <QApplication>
#include <KChartChart>
#include <KChartBarDiagram>
#include <KChartCartesianAxis>
#include <KChartCartesianCoordinatePlane>
#include <KChartLegend>
class ChartWidget : public QWidget {
Q_OBJECT
public:
explicit ChartWidget(QWidget* parent = nullptr)
: QWidget(parent)
{
m_model.insertRows( 0, 0, QModelIndex() );
KChart::BarDiagram* diagram = new KChart::BarDiagram;
diagram->setModel(&m_model);
KChart::Legend* legend = new KChart::Legend(diagram,diagram);
m_chart.addLegend(legend);
// The code below doesn't work, but it would
// be nice if it did:
#if 0
KChart::Legend* legend = new KChart::Legend;
legend->addDiagram(diagram1);
legend->addDiagram(diagram2);
...
m_chart.addLegend(legend);
#endif
KChart::CartesianAxis* abcissa = new KChart::CartesianAxis(diagram);
abcissa->setPosition( KChart::CartesianAxis::Bottom );
KChart::CartesianAxis* ordinate = new KChart::CartesianAxis(diagram);
ordinate->setPosition( KChart::CartesianAxis::Left );
diagram->addAxis(abcissa);
diagram->addAxis(ordinate);
// NOTE: If this is done before adding axes,
// the axes don't show up at all
m_chart.coordinatePlane()->replaceDiagram(diagram);
m_rowbutton.setText( tr("Add rows") );
m_colbutton.setText( tr("Add columns") );
connect( &m_rowbutton, SIGNAL(clicked()),
this, SLOT(addRows()));
connect( &m_colbutton, SIGNAL(clicked()),
this, SLOT(addCols()));
QVBoxLayout* l = new QVBoxLayout(this);
l->addWidget(&m_chart);
l->addWidget(&m_rowbutton);
l->addWidget(&m_colbutton);
setLayout(l);
}
private Q_SLOTS:
void addRows()
{
m_model.insertRows(m_model.rowCount(),1);
for ( int i = 0; i < m_model.columnCount(); ++i ) {
m_model.setData( m_model.index(m_model.rowCount()-1,i), i );
}
}
void addCols()
{
m_model.insertColumns(m_model.columnCount(),1);
for ( int i = 0; i < m_model.rowCount(); ++i ) {
m_model.setData( m_model.index(i,m_model.columnCount()-1), i );
}
}
private:
KChart::Chart m_chart;
QPushButton m_rowbutton;
QPushButton m_colbutton;
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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