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 <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"