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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 <QApplication>
#include <QStandardItemModel>
#include <QWidget>
#include <KChartChart>
#include <KChartBarDiagram>
#include <KChartDataValueAttributes>
using namespace KChart;
class ChartWidget : public QWidget
{
Q_OBJECT
public:
explicit ChartWidget( QWidget *parent = nullptr );
private:
Chart m_chart;
QStandardItemModel m_model;
};
ChartWidget::ChartWidget( QWidget *parent )
: 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, row * 3 + column );
}
}
BarDiagram* diagram = new KChart::BarDiagram;
diagram->setModel( &m_model );
BarAttributes ba( diagram->barAttributes() );
//set the bar width and enable it
ba.setFixedBarWidth( 140 );
ba.setUseFixedBarWidth( true );
//configure gap between values
//and blocks
ba.setGroupGapFactor( 0.50 );
ba.setBarGapFactor( 0.125 );
//assign to the diagram
diagram->setBarAttributes( ba );
// display the values
DataValueAttributes dva( diagram->dataValueAttributes() );
TextAttributes ta( dva.textAttributes() );
//rotate if you wish
//ta.setRotation( 0 );
ta.setFont( QFont( "Comic", 9 ) );
ta .setPen( QPen( QColor( Qt::darkGreen ) ) );
ta.setVisible( true );
dva.setTextAttributes( ta );
dva.setVisible( true );
diagram->setDataValueAttributes( dva );
//draw a surrounding line around bars
QPen linePen;
linePen.setColor( Qt::magenta );
linePen.setWidth( 4 );
linePen.setStyle( Qt::DotLine );
//draw only around a dataset
//to draw around all the bars
// call setPen( myPen );
diagram->setPen( 1, linePen );
m_chart.coordinatePlane()->replaceDiagram( diagram );
m_chart.setGlobalLeadingTop( 40 );
QVBoxLayout *l = new QVBoxLayout( this );
l->addWidget( &m_chart );
setLayout( l );
}
int main( int argc, char** argv )
{
QApplication app( argc, argv );
ChartWidget w;
w.show();
return app.exec();
}
#include "main.moc"
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