File indexing completed on 2024-11-24 03:57:51

 /**
  * 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 "mainwindow.h"
 
 #include <QStandardItemModel>
 #include <QFileDialog>
 
 #include <KChartChart>
 #include <KChartDataValueAttributes>
 #include <KChartLegend>
 #include <KChartLineDiagram>
 #include <KChartTextAttributes>
 #include <KChartThreeDLineAttributes>
 
 
 using namespace KChart;
 
 MainWindow::MainWindow( QWidget* parent ) :
     QWidget( parent )
 {
     setupUi( this );
 
     QHBoxLayout* chartLayout = new QHBoxLayout( chartFrame );
     m_chart = new Chart();
     m_chart->setGlobalLeading( 20,  20,  20,  20 );
     chartLayout->addWidget( m_chart );
 
 
     // Initialize the model, and fill it with data
     const int rowCount = 8;
     const int columnCount = 3;
     m_model = new QStandardItemModel(rowCount, columnCount, this);
     m_model->setHeaderData(0, Qt::Horizontal, tr("Product A"));
     m_model->setHeaderData(1, Qt::Horizontal, tr("Product B"));
     m_model->setHeaderData(2, Qt::Horizontal, tr("Product C"));
     openFile(":/Charts/qtdata.cht");
 
     // Set up the diagram
     m_lines = new LineDiagram();
     // Register the data model at the diagram
     m_lines->setModel( m_model );
     // Add axes to the diagram
     CartesianAxis *xAxis = new CartesianAxis( m_lines );
     CartesianAxis *yAxis = new CartesianAxis ( m_lines );
     xAxis->setPosition ( KChart::CartesianAxis::Bottom );
     yAxis->setPosition ( KChart::CartesianAxis::Left );
     m_lines->addAxis( xAxis );
     m_lines->addAxis( yAxis );
     // Make the lines thicker
     for ( int iColumn = 0; iColumn < columnCount; ++iColumn ) {
         QPen linePen( m_lines->pen( iColumn ) );
         linePen.setWidth( 3 );
         m_lines->setPen( iColumn, linePen );
     }
     // Register the diagram at the coordinate plane
     m_chart->coordinatePlane()->replaceDiagram( m_lines );
 
     // Add a legend
     Legend* legend = new Legend( m_lines, m_chart );
     legend->setPosition( Position::South );
     legend->setAlignment( Qt::AlignCenter );
     legend->setShowLines( true );
     legend->setTitleText("");
     legend->setOrientation( Qt::Horizontal );
     legend->addDiagram( m_lines );
     m_chart->addLegend( legend );
 }
 
 void MainWindow::on_showDataset1CB_toggled( bool checked )
 {
     setHidden( 0, ! checked );
 }
 
 void MainWindow::on_showDataset2CB_toggled( bool checked )
 {
     setHidden( 1, ! checked );
 }
 
 void MainWindow::on_showDataset3CB_toggled( bool checked )
 {
     setHidden( 2, ! checked );
 }
 
 void MainWindow::setHidden( int dataset, bool hidden )
 {
     m_lines->setHidden( dataset, hidden );
     m_chart->update();
 }
 
 void MainWindow::openFile(const QString &path)
 {
     QString fileName;
     if (path.isNull())
         fileName = QFileDialog::getOpenFileName(this, tr("Choose a data file"),
             "", "*.cht");
     else
         fileName = path;
 
     if (!fileName.isEmpty()) {
         QFile file(fileName);
 
         if (file.open(QFile::ReadOnly | QFile::Text)) {
             QTextStream stream(&file);
             QString line;
 
             m_model->removeRows(0, m_model->rowCount(QModelIndex()), QModelIndex());
 
             int row = 0;
             do {
                 line = stream.readLine();
                 if (!line.isEmpty()) {
 
                     m_model->insertRows(row, 1, QModelIndex());
 
                     QStringList pieces = line.split(',', Qt::SkipEmptyParts);
                     m_model->setData(m_model->index(row, 0, QModelIndex()), pieces.value(0));
                     m_model->setData(m_model->index(row, 1, QModelIndex()), pieces.value(1));
                     m_model->setData(m_model->index(row, 2, QModelIndex()), pieces.value(2));
                     ++row;
                 }
             } while (!line.isEmpty());
 
             file.close();
         }
     }
 }