MainWindow::MainWindow( QWidget* parent ) :
QWidget( parent )
{
setupUi( this );
QHBoxLayout* chartLayout = new QHBoxLayout( chartFrame );
m_chart = new KDChart::Chart;
chartLayout->addWidget( m_chart );
hSBar->setVisible( false );
vSBar->setVisible( false );
m_model.loadFromCSV( ":/data" );
// Set up the diagram
m_lines = new KDChart::LineDiagram();
m_lines->setModel( &m_model );
KDChart::CartesianAxis *xAxis = new KDChart::CartesianAxis( m_lines );
KDChart::TextAttributes ta( xAxis->textAttributes() );
AdjustedCartesianAxis *yAxis = new AdjustedCartesianAxis( m_lines );
yAxis->setBounds( 3, 6 );
xAxis->setPosition ( KDChart::CartesianAxis::Bottom );
yAxis->setPosition ( KDChart::CartesianAxis::Left );
/*
// set the following to 0 to have only one of the axes with background
#if 1
// colourize the axes' backgrounds
KDChart::BackgroundAttributes ba = yAxis->backgroundAttributes();
ba.setVisible( true );
ba.setBrush( QBrush( QColor( 0xff, 0xff, 0x40 ) ) );
yAxis->setBackgroundAttributes( ba );
xAxis->setBackgroundAttributes( ba );
#else
// colourize the Ordinate axis' background
QLinearGradient linearGrad( QPointF( 0, 100 ), QPointF( 0, 400 ) );
linearGrad.setColorAt( 0.0, QColor( 0xff, 0xff, 0xc0 ) );
linearGrad.setColorAt( 1.0, QColor( 0xa0, 0xc0, 0xff ) );
ba = yAxis->backgroundAttributes();
ba.setVisible( true );
ba.setBrush( linearGrad );
yAxis->setBackgroundAttributes( ba );
#endif
*/
// add 1 pixel space at the left and at the top edge, because the
// axis area would otherwise overwrite the left/top borders
m_chart->setGlobalLeading( 1, 1, 0, 0 );
// 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";
xAxis->setLabels( daysOfWeek );
//QStringList shortDays;
//shortDays << "Mon" << "Tue" << "Wed" << "Thu" << "Fri" << "Sat" << "Sun";
//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>";
xAxis->setLabels( htmlStyles );
ta.setTextDocument(new QTextDocument);
#endif
// set custom axis labels at custom positions
#if 0
QMap< qreal, QString > annotations;
annotations[ 0.5 ] = "Left";
annotations[ 3.5 ] = "Center";
annotations[ 4.2 ] = "After Center";
annotations[ 6.5 ] = "Right";
xAxis->setAnnotations(annotations);
#endif
// Illustration of custom ticks
QList<qreal> ticks;
ticks.append( 0.5 );
ticks.append( 3.5 );
ticks.append( 4.2 );
ticks.append( 6.5 );
xAxis->setCustomTicks(ticks);
yAxis->setCustomTicks(ticks);
// rotate abscissa labels by -60 degrees:
ta.setRotation( -60 );
xAxis->setTextAttributes( ta );
m_lines->addAxis( xAxis );
m_lines->addAxis( yAxis );
m_chart->coordinatePlane()->replaceDiagram( m_lines );
// Set up the legend
xAxis->setCustomTickLength( 11 );
yAxis->setCustomTickLength( 11 );
m_legend = new KDChart::Legend( m_lines, m_chart );
m_legend->setPosition( KDChart::Position::East );
m_legend->setAlignment( Qt::AlignTop );
m_chart->addLegend( m_legend );
}
MainWindow::MainWindow( QWidget* parent ) :
QWidget( parent )
{
setupUi( this );
m_chartLayout = new QHBoxLayout( chartFrame );
m_chart = new KDChart::Chart();
m_chartLayout->addWidget( m_chart );
// add a small left-side leading because we use a coloured Y axis background
m_chart->setGlobalLeadingLeft( 1 );
initializeDataModel();
// register our own serializer for saving / loading the Y axis:
KDChart::registerElementSerializer<
AdjustedCartesianAxisSerializer,
AdjustedCartesianAxis >( 0 ); // will be un-registered in ~Mainwindow()
// Set up the diagrams
KDChart::LineDiagram* lines = new KDChart::LineDiagram();
lines->setModel( m_model );
// increase the line width
for ( int iRow = 0; iRow < lines->model()->rowCount(); ++iRow ) {
QPen pen( lines->pen( iRow ) );
pen.setWidth(2);
pen.setColor( pen.color().dark(133) );
lines->setPen( iRow, pen );
}
// Assign some axes
KDChart::CartesianAxis *xAxis = new KDChart::CartesianAxis( lines );
AdjustedCartesianAxis *yAxis = new AdjustedCartesianAxis( lines );
yAxis->setBounds(29.9, 31.0);
xAxis->setPosition ( KDChart::CartesianAxis::Bottom );
yAxis->setPosition ( KDChart::CartesianAxis::Left );
yAxis->setTitleText ( "an axis class with customized labels" );
lines->addAxis( xAxis );
lines->addAxis( yAxis );
KDChart::CartesianCoordinatePlane* plane =
static_cast< KDChart::CartesianCoordinatePlane * >(m_chart->coordinatePlane());
plane->replaceDiagram( lines );
KDChart::HeaderFooter* headerFooter = new KDChart::HeaderFooter( m_chart );
m_chart->addHeaderFooter( headerFooter );
headerFooter->setText( "Line diagram using a custom axis class" );
KDChart::TextAttributes textAttrs( headerFooter->textAttributes() );
textAttrs.setPen( QPen( Qt::red ) );
headerFooter->setTextAttributes( textAttrs );
headerFooter->setType( KDChart::HeaderFooter::Header );
headerFooter->setPosition( KDChart::Position::North );
// assign some bg colors
KDChart::BackgroundAttributes ba = yAxis->backgroundAttributes();
ba.setVisible(true);
ba.setBrush(QBrush(QColor(255,255,200)));
yAxis->setBackgroundAttributes(ba);
}
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();
}
int main( int argc, char** argv )
{
QApplication app( argc, argv );
const int points = 420;
const double xMin = 0;
const double xMax = 20;
const double step = ( xMax - xMin ) / ( points - 1 );
QStandardItemModel model( points, 6 );
double x = xMin;
for ( int n = 0; n < points; ++n, x += step) {
QModelIndex index = model.index( n, 0 );
model.setData( index, x );
index = model.index( n, 1 );
model.setData( index, sin( x ) * 100.0 );
index = model.index( n, 2 );
model.setData( index, x );
index = model.index( n, 3 );
model.setData( index, x );
index = model.index( n, 4 );
model.setData( index, x );
index = model.index( n, 5 );
model.setData( index, x * x * x );
}
model.setHeaderData( 0, Qt::Horizontal, QString::fromLatin1( "100 * sin(x)" ) );
model.setHeaderData( 2, Qt::Horizontal, QString::fromLatin1( "x" ) );
model.setHeaderData( 4, Qt::Horizontal, QString::fromLatin1( "x^3" ) );
KDChart::Chart* chart = new KDChart::Chart();
KDChart::AbstractCartesianDiagram* diagram = new KDChart::Plotter;
diagram->setModel( &model );
chart->coordinatePlane()->replaceDiagram( diagram );
KDChart::CartesianAxis* xAxis = new KDChart::CartesianAxis( diagram );
KDChart::CartesianAxis* yAxis = new KDChart::CartesianAxis( diagram );
xAxis->setPosition( KDChart::CartesianAxis::Bottom );
yAxis->setPosition( KDChart::CartesianAxis::Left );
diagram->addAxis( xAxis );
diagram->addAxis( yAxis );
KDChart::Legend* legend = new KDChart::Legend( diagram, chart );
KDChart::FrameAttributes legendAtt = legend->frameAttributes();
legendAtt.setCornerRadius( 9 );
legend->setFrameAttributes( legendAtt );
legend->setPosition( KDChart::Position::East );
legend->setAlignment( Qt::AlignCenter );
legend->setTitleText( "Legend" );
chart->addLegend( legend );
KDChart::CartesianCoordinatePlane* cart_plane = dynamic_cast<KDChart::CartesianCoordinatePlane*>(chart->coordinatePlane());
Q_ASSERT(cart_plane);
cart_plane->setAxesCalcModeX(KDChart::AbstractCoordinatePlane::Logarithmic);
cart_plane->setAxesCalcModeY(KDChart::AbstractCoordinatePlane::Logarithmic);
// Set the vertical range from 15 to 75 - with a logarithmic axis I actually get 1 to 100
//cart_plane->setVerticalRange(QPair<qreal,qreal>( 0.005, 1000 ) );
// Set the horizontal range from 1 to 9 - with a linear axis this works OK
cart_plane->setHorizontalRange(QPair<qreal,qreal>( 0.001, 100 ) );
chart->show();
int ret = app.exec();
delete chart;
return ret;
}
