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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 <KChartChart>
#include <KChartBarDiagram>
#include <KChartLegend>
#include <KChartPosition>
#include <KChartBackgroundAttributes>
#include <KChartFrameAttributes>
#include <QApplication>
using namespace KChart;
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) );
}
}
BarDiagram* diagram = new BarDiagram;
diagram->setModel(&m_model);
m_chart.coordinatePlane()->replaceDiagram(diagram);
// Add at one legend and set it up
Legend* legend = new Legend( diagram, &m_chart );
legend->setPosition( Position::North );
legend->setAlignment( Qt::AlignCenter );
legend->setShowLines( true );
legend->setSpacing( 5 );
legend->setTitleText( tr( "Legend" ) );
legend->setOrientation( Qt::Horizontal );
m_chart.addLegend( legend );
// Configure the items markers
MarkerAttributes lma ( legend->markerAttributes( 0 ) );
lma.setMarkerStyle( MarkerAttributes::MarkerDiamond );
legend->setMarkerAttributes( 0, lma );
lma.setMarkerStyle( MarkerAttributes::MarkerCircle );
legend->setMarkerAttributes( 1, lma );
// Configure Legend Title and labels
legend->setTitleText( "Bars" );
legend->setText( 0, "Series 1" );
legend->setText( 1, "Series 2" );
legend->setText( 2, "Series 3" );
// adjust the legend item's font:
TextAttributes lta( legend->textAttributes() );
lta.setPen( QPen( Qt::darkGray ) );
Measure me( lta.fontSize() );
me.setValue( me.value() * 1.5 );
lta.setFontSize( Measure( 9, KChartEnums::MeasureCalculationModeAbsolute ) );
legend->setTextAttributes( lta );
// adjust the legend title's font:
lta = legend->titleTextAttributes();
lta.setPen( QPen( Qt::darkGray ) );
me = lta.fontSize();
me.setValue( me.value() * 1.5 );
lta.setFontSize( me );
legend->setTitleTextAttributes( lta );
// Configure a pen to surround
// the markers with a border
QPen markerPen;
markerPen.setColor( Qt::darkGray );
markerPen.setWidth( 2 );
// Pending Michel use datasetCount() here as soon
// as it is fixed
for ( uint i = 0; i < /*legend->datasetCount()*/ 3; i++ )
legend->setPen( i, markerPen );
// Add a background to your legend
BackgroundAttributes ba;
ba.setBrush( Qt::white );
ba.setVisible( true );
legend->setBackgroundAttributes( ba );
FrameAttributes fa;
fa.setPen( markerPen );
fa.setVisible( true );
legend->setFrameAttributes( fa );
QVBoxLayout* l = new QVBoxLayout(this);
l->addWidget(&m_chart);
m_chart.setGlobalLeadingTop( 10 );
setLayout(l);
}
private:
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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