File indexing completed on 2024-06-16 04:09:00

 /**
  * 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 <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"