File indexing completed on 2024-11-24 03:57:46

 /**
  * 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 <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"