bool TextAttributes::operator==( const TextAttributes& r ) const
{
    // the following works around a bug in gcc 4.3.2
    // causing StyleHint to be set to Zero when copying a QFont
    const QFont myFont( font() );
    QFont r_font( r.font() );
    r_font.setStyleHint( myFont.styleHint(), myFont.styleStrategy() );
    return ( isVisible() == r.isVisible() &&
             myFont == r_font &&
             fontSize() == r.fontSize() &&
             minimalFontSize() == r.minimalFontSize() &&
             autoRotate() == r.autoRotate() &&
             autoShrink() == r.autoShrink() &&
             rotation() == r.rotation() &&
             pen() == r.pen() &&
             textDocument() == r.textDocument() );
}
MainWindow::MainWindow( QWidget* parent ) :
    QWidget( parent )
{
    setupUi( this );

    QHBoxLayout* chartLayout = new QHBoxLayout( chartFrame );
    m_chart = new Chart();
    m_chart->setGlobalLeading( 10,  10,  10,  10 );
    chartLayout->addWidget( m_chart );
    hSBar->setVisible( false );
    vSBar->setVisible( false );

    m_model.loadFromCSV( ":/data" );

    // Set up the diagram
    m_lines = new BarDiagram();
    m_lines->setModel( &m_model );

    // create and position axis
    CartesianAxis *topAxis = new CartesianAxis( m_lines );
    CartesianAxis *leftAxis = new CartesianAxis ( m_lines );
    RulerAttributes rulerAttr = topAxis->rulerAttributes();
    rulerAttr.setTickMarkPen( 0.9999999, QPen( Qt::red ) );
    rulerAttr.setTickMarkPen( 2.0, QPen( Qt::green ) );
    rulerAttr.setTickMarkPen( 3.0, QPen( Qt::blue ) );
    rulerAttr.setShowMinorTickMarks(true);
    //rulerAttr.setShowMajorTickMarks(false);
    topAxis->setRulerAttributes( rulerAttr );
    CartesianAxis *rightAxis = new CartesianAxis ( m_lines );
    CartesianAxis *bottomAxis = new CartesianAxis ( m_lines );
    topAxis->setPosition ( CartesianAxis::Top );
    leftAxis->setPosition ( CartesianAxis::Left );
    rightAxis->setPosition ( CartesianAxis::Right );
    bottomAxis->setPosition ( CartesianAxis::Bottom );

// set the margin that should be used between the displayed labels and the ticks to zero
#if 0
    RulerAttributes ra = bottomAxis->rulerAttributes();
    ra.setLabelMargin(0);
    bottomAxis->setRulerAttributes( ra );
#endif

// show a red frame around the bottom axis
#if 0
    FrameAttributes fa( bottomAxis->frameAttributes() );
    fa.setPen( QPen(QBrush(QColor("#ff0000")),1.0) );
    fa.setVisible( true );
    bottomAxis->setFrameAttributes( fa );
#endif
    
    // set axis titles
    topAxis->setTitleText ( "Abscissa color configured top position" );
    leftAxis->setTitleText ( "left Ordinate: fonts configured" );
    rightAxis->setTitleText ( "right Ordinate: default settings" );
    bottomAxis->setTitleText ( "Abscissa Bottom" );
    topAxis->setTitleSize(1.1);
    topAxis->setTitleSpace(.4);

    // configure titles text attributes
    TextAttributes taTop ( topAxis->titleTextAttributes () );
    taTop.setPen( QPen( Qt::red ) );
    topAxis->setTitleTextAttributes ( taTop );

    TextAttributes taLeft ( leftAxis->titleTextAttributes () );
    taLeft.setRotation( 180 );
    Measure me( taLeft.fontSize() );
    me.setValue( me.value() * 0.8 );
    taLeft.setFontSize( me );

// Set the following to 1, to hide the left axis title
//  - no matter if a title text is set or not
#if 0
    taLeft.setVisible( false );
#endif
    leftAxis->setTitleTextAttributes ( taLeft );

    TextAttributes taBottom ( bottomAxis->titleTextAttributes () );
    taBottom.setPen(  QPen( Qt::blue ) );
    bottomAxis->setTitleTextAttributes ( taBottom );

    // configure labels text attributes
    TextAttributes taLabels( topAxis->textAttributes() );
    taLabels.setPen(  QPen( Qt::darkGreen ) );
    taLabels.setRotation( 90 );
    topAxis->setTextAttributes( taLabels );
    leftAxis->setTextAttributes( taLabels );
    bottomAxis->setTextAttributes( taLabels );


// Set the following to 0, to see the default Abscissa labels
// (== X headers, as read from the data file)
#if 1
    // configure labels and their shortened versions
    QStringList daysOfWeek;
    daysOfWeek << "M O N D A Y" << "Tuesday" << "Wednesday"
               << "Thursday" << "Friday" ;
    topAxis->setLabels( daysOfWeek );

    QStringList shortDays;
    shortDays << "MON" << "Tue" << "Wed"
              << "Thu" << "Fri";
    topAxis->setShortLabels( shortDays );

    QStringList bottomLabels;
    bottomLabels << "Team A" << "Team B" << "Team C";
    bottomAxis->setLabels( bottomLabels );

    QStringList shortBottomLabels;
    shortBottomLabels << "A" << "B";
    bottomAxis->setShortLabels( shortBottomLabels );
#endif

    // add axis
    m_lines->addAxis( topAxis );
    m_lines->addAxis( leftAxis );
    m_lines->addAxis( rightAxis );
    m_lines->addAxis( bottomAxis );

    // assign diagram to chart view
    m_chart->coordinatePlane()->replaceDiagram( m_lines );
}