File indexing completed on 2024-06-16 04:09:02 

0001 /**
0002  * SPDX-FileCopyrightText: 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
0003  *
0004  * This file is part of the KD Chart library.
0005  *
0006  * SPDX-License-Identifier: GPL-2.0-or-later
0007  */
0008 
0009 #include <QStandardItemModel>
0010 
0011 #include <KChartChart>
0012 #include <KChartGridAttributes>
0013 #include <KChartFrameAttributes>
0014 #include <KChartTextAttributes>
0015 #include <KChartDataValueAttributes>
0016 #include <KChartMarkerAttributes>
0017 #include <KChartPlotter>
0018 #include <KChartLegend>
0019 #include <KChartBackgroundAttributes>
0020 
0021 #include <QApplication>
0022 
0023 int main(int argc, char *argv[]) {
0024     QApplication a(argc, argv);
0025     KChart::Chart chart;
0026 
0027     QStandardItemModel model;
0028 
0029         const double offset = 600;
0030     model.setRowCount( 100 );
0031     model.setColumnCount( 2 ); // 1 data set
0032     for ( int i = 0; i < 100; ++i ) {
0033         double t = i + offset;
0034         double v = i + offset;
0035         QModelIndex index = model.index( i, 0 );
0036         model.setData( index, t );
0037         index = model.index( i, 1 );
0038         model.setData( index, v );
0039     }
0040 
0041     model.setHeaderData( 0, Qt::Horizontal, "Dataset 1" );
0042 
0043     // general chart layout
0044     KChart::FrameAttributes fm = chart.frameAttributes();
0045     fm.setVisible( true );
0046     fm.setPen( QPen( Qt::black ) );
0047     chart.setFrameAttributes( fm );
0048     chart.setGlobalLeading( 10, 0, 10, 10 );
0049 
0050     KChart::BackgroundAttributes chart_bg;
0051     chart_bg.setBrush( Qt::white );
0052     chart_bg.setVisible( true );
0053     chart.setBackgroundAttributes( chart_bg );
0054 
0055     // coordinate plane setup
0056     KChart::AbstractCoordinatePlane * plane1 = chart.coordinatePlane();
0057     plane1->setRubberBandZoomingEnabled( true );
0058 
0059     // create cartesian diagrams
0060     KChart::Plotter * plotter = new KChart::Plotter;
0061     plotter->setAntiAliasing( false );
0062     plotter->setModel( &model );
0063     plane1->replaceDiagram( plotter );
0064 
0065     // customize grids
0066     KChart::CartesianCoordinatePlane * cp1 = static_cast< KChart::CartesianCoordinatePlane * >( plane1 );
0067     KChart::GridAttributes gv = cp1->gridAttributes( Qt::Vertical );
0068     QPen gridPen( QColor( 200, 100, 100 ) );
0069     gridPen.setStyle( Qt::DashLine );
0070     gv.setGridPen( gridPen );
0071     gridPen.setStyle( Qt::DotLine );
0072     gridPen.setColor( QColor( 255,155,155 ) );
0073     gv.setSubGridPen( gridPen );
0074     cp1->setGridAttributes( Qt::Vertical,  gv );
0075 
0076         // Enable isometric scaling
0077         cp1->setIsometricScaling( true );
0078 
0079     // axis
0080     KChart::CartesianAxis * xAxis = new KChart::CartesianAxis( plotter );
0081     xAxis->setPosition( KChart::CartesianAxis::Bottom );
0082     xAxis->setTitleText("X-Title");
0083 
0084     KChart::TextAttributes att = xAxis->titleTextAttributes();
0085     QFont f = att.font();
0086     f.setBold( true );
0087     att.setFont( f );
0088     att.setAutoShrink( true );
0089     att.setFontSize( KChart::Measure( 16 ) );
0090     xAxis->setTitleTextAttributes( att );
0091 
0092     KChart::CartesianAxis * y1Axis = new KChart::CartesianAxis( plotter );
0093     y1Axis->setPosition( KChart::CartesianAxis::Left );
0094     y1Axis->setTitleText( "Y-Title" );
0095 
0096     att = y1Axis->titleTextAttributes();
0097     f = att.font();
0098     f.setBold( true );
0099     att.setFont( f );
0100     att.setAutoShrink( true );
0101     att.setFontSize( KChart::Measure( 16 ) );
0102     y1Axis->setTitleTextAttributes( att );
0103 
0104     // add the axis to the plotter
0105     plotter->addAxis( xAxis );
0106     plotter->addAxis( y1Axis );
0107 
0108     // create legend
0109     KChart::Legend * legend = new KChart::Legend( plotter, &chart );
0110     chart.addLegend( legend );
0111     att = legend->textAttributes();
0112     f = att.font();
0113     f.setBold( false );
0114     att.setFont( f );
0115     att.setAutoShrink( true );
0116     legend->setTextAttributes( att );
0117 
0118     legend->setPosition( KChart::Position::East );
0119     legend->setAlignment( Qt::AlignCenter );
0120     legend->setTitleText( "Curves" );
0121     att = legend->titleTextAttributes();
0122     f = att.font();
0123     f.setBold( true );
0124     att.setFont( f );
0125     att.setAutoShrink( true );
0126     att.setFontSize( KChart::Measure( 16 ) );
0127     legend->setTitleTextAttributes( att );
0128 
0129     KChart::BackgroundAttributes legend_bg;
0130     legend_bg.setBrush( Qt::white );
0131     legend_bg.setVisible( true );
0132     legend->setBackgroundAttributes( legend_bg );
0133 
0134     KChart::DataValueAttributes attr = plotter->dataValueAttributes();
0135     KChart::TextAttributes tattr = attr.textAttributes();
0136         tattr.setFontSize( KChart::Measure( 12, KChartEnums::MeasureCalculationModeAbsolute ) );
0137     tattr.setRotation( 0 );
0138     attr.setTextAttributes( tattr );
0139     plotter->setDataValueAttributes( attr );
0140 
0141     // customize marker properties
0142 
0143     // Dataset 1 : green, MarkerRing, no line
0144     QColor SERIES_1_OUTLINE = QColor( 0, 128, 0 );
0145     attr = plotter->dataValueAttributes( 0 );
0146     KChart::MarkerAttributes mattr = attr.markerAttributes();
0147     mattr.setMarkerColor( SERIES_1_OUTLINE );
0148 //        mattr.setMarkerStyle( KChart::MarkerAttributes::MarkerRing );
0149     mattr.setMarkerSize( QSizeF( 6.0, 6.0 ) );
0150     mattr.setVisible( true );
0151     attr.setMarkerAttributes( mattr );
0152     attr.setVisible( true );
0153     plotter->setDataValueAttributes( 0, attr );
0154     plotter->setPen( 0, Qt::NoPen );
0155 
0156     chart.show();
0157     return a.exec();
0158 }