File indexing completed on 2024-06-23 04:17:56

 /**
  * 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 <KChartChart>
 #include <KChartPieDiagram>
 #include <KChartDataValueAttributes>
 #include <KChartBackgroundAttributes>
 #include <KChartPieAttributes>
 #include <KChartPosition>
 
 #include <QApplication>
 
 using namespace KChart;
 
 class ChartWidget : public QWidget {
     Q_OBJECT
 public:
     explicit ChartWidget(QWidget* parent = nullptr)
         : QWidget(parent)
     {
 
         m_model.insertRows( 0, 1, QModelIndex() );
         m_model.insertColumns(  0,  6,  QModelIndex() );
         for (int row = 0; row < 1; ++row) {
             for (int column = 0; column < 6; ++column) {
                 QModelIndex index = m_model.index(row, column, QModelIndex());
                 m_model.setData(index, QVariant(row+1 * column+1) );
 
                 // this shows the index as static comments:
                 // m_model.setData(index, QString("row: %1,  column: %2").arg(row).arg(column), KChart::CommentRole);
 
                 // this shows the index as volatile tooltips:
                 m_model.setData(index, QString("row: %1,  column: %2").arg(row).arg(column), Qt::ToolTipRole);
             }
         }
         // We need a Polar plane for the Pie type
         PolarCoordinatePlane* polarPlane = new PolarCoordinatePlane( &m_chart );
         // replace the default Cartesian plane with
         // our Polar plane
         m_chart.replaceCoordinatePlane( polarPlane );
 
         // assign the model to our pie diagram
         PieDiagram* diagram = new PieDiagram;
         diagram->setModel(&m_model);
 
         // Configure some Pie specifical attributes
 
         // explode a section
         PieAttributes pa(  diagram->pieAttributes() );
         pa.setExplodeFactor( 0.1 );
 
         // Assign the attributes
         // to the diagram
         diagram->setPieAttributes( 1,  pa );
 
         // Configure a generic attribute
         // available to all chart types
         QPen sectionPen;
         sectionPen.setWidth( 5 );
         sectionPen.setStyle( Qt::DashLine );
         sectionPen.setColor( Qt::magenta );
 
         diagram->setPen( 1, sectionPen );
 
         // Display data values
         // not implemented yet - disable for now
         const QFont font(QFont( "Comic", 10 ));
         const int colCount = diagram->model()->columnCount();
         for ( int iColumn = 0; iColumn<colCount; ++iColumn ) {
             DataValueAttributes dva( diagram->dataValueAttributes( iColumn ) );
             TextAttributes ta( dva.textAttributes() );
             ta.setRotation( 0 );
             ta.setFont( font );
             ta .setPen( QPen( Qt::darkBlue ) );
             ta.setVisible( true );
             dva.setTextAttributes( ta );
 
             BackgroundAttributes back( dva.backgroundAttributes() );
             back.setBrush( QBrush( QColor(255,0,0) ) );
             back.setVisible( true );
             dva.setBackgroundAttributes( back );
 
             RelativePosition posPos( dva.positivePosition() );
             posPos.setReferencePosition( KChart::Position::North );
             posPos.setAlignment( Qt::AlignCenter );
             posPos.setHorizontalPadding( KChart::Measure(0.0) );
             posPos.setVerticalPadding( KChart::Measure(-1000.0) );
             dva.setPositivePosition( posPos );
             dva.setVisible( true );
             diagram->setDataValueAttributes( iColumn, dva);
         }
 
         // Assign our diagram to the Chart
         m_chart.coordinatePlane()->replaceDiagram(diagram);
 
         QVBoxLayout* l = new QVBoxLayout(this);
         l->addWidget(&m_chart);
         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"