int main(int argc, char *argv[]) {
QApplication a(argc, argv);
KDChart::Chart chart;
QStandardItemModel model;
const double offset = 600;
model.setRowCount( 100 );
model.setColumnCount( 2 ); // 1 data set
for ( int i = 0; i < 100; ++i ) {
double t = i + offset;
double v = i + offset;
QModelIndex index = model.index( i, 0 );
model.setData( index, t );
index = model.index( i, 1 );
model.setData( index, v );
}
model.setHeaderData( 0, Qt::Horizontal, "Dataset 1" );
// general chart layout
KDChart::FrameAttributes fm = chart.frameAttributes();
fm.setVisible( true );
fm.setPen( QPen( Qt::black ) );
chart.setFrameAttributes( fm );
chart.setGlobalLeading( 10, 0, 10, 10 );
KDChart::BackgroundAttributes chart_bg;
chart_bg.setBrush( Qt::white );
chart_bg.setVisible( true );
chart.setBackgroundAttributes( chart_bg );
// coordinate plane setup
KDChart::AbstractCoordinatePlane * plane1 = chart.coordinatePlane();
plane1->setRubberBandZoomingEnabled( true );
// create cartesian diagrams
KDChart::Plotter * plotter = new KDChart::Plotter;
plotter->setAntiAliasing( false );
plotter->setModel( &model );
plane1->replaceDiagram( plotter );
// customize grids
KDChart::CartesianCoordinatePlane * cp1 = static_cast< KDChart::CartesianCoordinatePlane * >( plane1 );
KDChart::GridAttributes gv = cp1->gridAttributes( Qt::Vertical );
QPen gridPen( QColor( 200, 100, 100 ) );
gridPen.setStyle( Qt::DashLine );
gv.setGridPen( gridPen );
gridPen.setStyle( Qt::DotLine );
gridPen.setColor( QColor( 255,155,155 ) );
gv.setSubGridPen( gridPen );
cp1->setGridAttributes( Qt::Vertical, gv );
// Enable isometric scaling
cp1->setIsometricScaling( true );
// axis
KDChart::CartesianAxis * xAxis = new KDChart::CartesianAxis( plotter );
xAxis->setPosition( KDChart::CartesianAxis::Bottom );
xAxis->setTitleText("X-Title");
KDChart::TextAttributes att = xAxis->titleTextAttributes();
QFont f = att.font();
f.setBold( true );
att.setFont( f );
att.setAutoShrink( true );
att.setFontSize( KDChart::Measure( 16 ) );
xAxis->setTitleTextAttributes( att );
KDChart::CartesianAxis * y1Axis = new KDChart::CartesianAxis( plotter );
y1Axis->setPosition( KDChart::CartesianAxis::Left );
y1Axis->setTitleText( "Y-Title" );
att = y1Axis->titleTextAttributes();
f = att.font();
f.setBold( true );
att.setFont( f );
att.setAutoShrink( true );
att.setFontSize( KDChart::Measure( 16 ) );
y1Axis->setTitleTextAttributes( att );
// add the axis to the plotter
plotter->addAxis( xAxis );
plotter->addAxis( y1Axis );
// create legend
KDChart::Legend * legend = new KDChart::Legend( plotter, &chart );
chart.addLegend( legend );
att = legend->textAttributes();
f = att.font();
f.setBold( false );
att.setFont( f );
att.setAutoShrink( true );
legend->setTextAttributes( att );
legend->setPosition( KDChart::Position::East );
legend->setAlignment( Qt::AlignCenter );
legend->setTitleText( "Curves" );
att = legend->titleTextAttributes();
f = att.font();
f.setBold( true );
att.setFont( f );
att.setAutoShrink( true );
att.setFontSize( KDChart::Measure( 16 ) );
legend->setTitleTextAttributes( att );
KDChart::BackgroundAttributes legend_bg;
legend_bg.setBrush( Qt::white );
legend_bg.setVisible( true );
legend->setBackgroundAttributes( legend_bg );
KDChart::DataValueAttributes attr = plotter->dataValueAttributes();
KDChart::TextAttributes tattr = attr.textAttributes();
tattr.setFontSize( KDChart::Measure( 12, KDChartEnums::MeasureCalculationModeAbsolute ) );
tattr.setRotation( 0 );
attr.setTextAttributes( tattr );
plotter->setDataValueAttributes( attr );
// customize marker properties
// Dataset 1 : green, MarkerRing, no line
QColor SERIES_1_OUTLINE = QColor( 0, 128, 0 );
attr = plotter->dataValueAttributes( 0 );
KDChart::MarkerAttributes mattr = attr.markerAttributes();
mattr.setMarkerColor( SERIES_1_OUTLINE );
// mattr.setMarkerStyle( KDChart::MarkerAttributes::MarkerRing );
mattr.setMarkerSize( QSizeF( 6.0, 6.0 ) );
mattr.setVisible( true );
attr.setMarkerAttributes( mattr );
attr.setVisible( true );
plotter->setDataValueAttributes( 0, attr );
plotter->setPen( 0, Qt::NoPen );
chart.show();
return a.exec();
}
