File indexing completed on 2024-11-24 03:57:45

 /**
  * 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 "AdjustedCartesianAxis.h"
 
 #include <KChartCartesianCoordinatePlane>
 #include <KChartChart>
 #include <KChartGridAttributes>
 #include <KChartLegend>
 #include <KChartLineDiagram>
 #include <KChartTextAttributes>
 
 #include <QDebug>
 #include <QLinearGradient>
 #include <QTextDocument>
 
 MainWindow::MainWindow( QWidget* parent ) :
     QWidget( parent )
 {
     setupUi( this );
 
     QHBoxLayout* chartLayout = new QHBoxLayout( m_chartFrame );
     m_chart = new KChart::Chart;
     chartLayout->addWidget( m_chart );
 
     m_model.loadFromCSV( ":/data" );
 
     // Set up the diagram
     m_lines = new KChart::LineDiagram();
     m_lines->setModel( &m_model );
 
     m_xAxis = new KChart::CartesianAxis( m_lines );
     KChart::TextAttributes ta( m_xAxis->textAttributes() );
 
     AdjustedCartesianAxis *yAxis = new AdjustedCartesianAxis( m_lines );
     yAxis->setBounds( 3, 6 );
     m_xAxis->setPosition( KChart::CartesianAxis::Bottom );
     yAxis->setPosition( KChart::CartesianAxis::Left );
 
 // set the following to 0, to see the default Abscissa labels (== X headers, as read from the data file)
 #if 1
     QStringList daysOfWeek;
     daysOfWeek << "Monday" << "Tuesday" << "Wednesday" << "Thursday" << "Friday" << "Saturday" << "Sunday";
     m_xAxis->setLabels( daysOfWeek );
 
     //QStringList shortDays;
     //shortDays << "Mon" << "Tue" << "Wed" << "Thu" << "Fri" << "Sat" << "Sun";
     //m_xAxis->setShortLabels( shortDays );
 #endif
 
 // Use HTML for drawing the text in the axis labels.
 #if 0
     QStringList htmlStyles;
     htmlStyles << "<b>Bold</b>" << "<i>Italic</i>" << "<u>Underline</u>" << "<font color='red'>Red</font>";
     m_xAxis->setLabels( htmlStyles );
     ta.setTextDocument(new QTextDocument);
 #endif
 
     // Illustration of custom ticks
     QList<qreal> ticks;
     ticks.append( 0.5 );
     ticks.append( 3.5 );
     ticks.append( 4.2 );
     ticks.append( 6.5 );
     m_xAxis->setCustomTicks(ticks);
     yAxis->setCustomTicks(ticks);
 
     // rotate abscissa labels by -60 degrees:
     ta.setRotation( -60 );
 
     m_xAxis->setTextAttributes( ta );
     m_lines->addAxis( m_xAxis );
     m_lines->addAxis( yAxis );
     m_chart->coordinatePlane()->replaceDiagram( m_lines );
     // Set up the legend
     m_xAxis->setCustomTickLength( 11 );
     yAxis->setCustomTickLength( 11 );
     m_legend = new KChart::Legend( m_lines, m_chart );
     m_legend->setPosition( KChart::Position::East );
     m_legend->setAlignment( Qt::AlignTop );
     m_chart->addLegend( m_legend );
 
     connect( m_annotations, SIGNAL(toggled(bool)), SLOT(annotationsToggled(bool)) );
     connect( m_linesOnAnnotations, SIGNAL(toggled(bool)), SLOT(gridLinesOnAnnotationsToggled(bool)) );
 }
 
 void MainWindow::annotationsToggled( bool showAnnotations )
 {
     QMap< qreal, QString > annotations;
     if ( showAnnotations ) {
         // set custom axis labels at custom positions
         annotations[ 0.5 ] = "Left";
         annotations[ 3.5 ] = "Center";
         annotations[ 4.2 ] = "Off Center";
         annotations[ 6.5 ] = "Right";
     }
     m_xAxis->setAnnotations( annotations );
     m_chart->update();
 }
 
 void MainWindow::gridLinesOnAnnotationsToggled( bool onAnnotations )
 {
         // Draw grid lines where the annotations are
     KChart::CartesianCoordinatePlane* plane =
         static_cast< KChart::CartesianCoordinatePlane* >( m_chart->coordinatePlane() );
     KChart::GridAttributes ga = plane->gridAttributes( Qt::Horizontal );
     ga.setLinesOnAnnotations( onAnnotations );
     plane->setGridAttributes( Qt::Horizontal, ga );
     m_chart->update();
 }