void testDiagramOwnership()
{
Legend* l = new Legend( m_chart );
QVERIFY( l->diagrams().size() == 0 );
l->addDiagram( m_lines );
QVERIFY( l->diagrams().size() == 1 );
l->addDiagram( m_bars );
QVERIFY( l->diagrams().size() == 2 );
QCOMPARE( dynamic_cast< LineDiagram * >(l->diagram()), m_lines );
l->removeDiagram( m_lines );
QVERIFY( l->diagrams().size() == 1 );
QCOMPARE( dynamic_cast< BarDiagram * >(l->diagram()), m_bars );
l->replaceDiagram( m_lines, m_bars );
QVERIFY( l->diagrams().size() == 1 );
QCOMPARE( dynamic_cast< LineDiagram * >(l->diagram()), m_lines );
}
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 ( KDChart::CartesianAxis::Bottom );
yAxis->setPosition ( KDChart::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 );
}