File indexing completed on 2024-05-12 04:20:45

 /**
  * SPDX-FileCopyrightText: 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
  *
  * This file is part of the KD Chart library.
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #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"