Ejemplo n.º 1
0
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() );
}
Ejemplo n.º 2
0
void RadarDiagram::paint( PaintContext* ctx,
                          bool calculateListAndReturnScale,
                          qreal& newZoomX, qreal& newZoomY )
{
    // note: Not having any data model assigned is no bug
    //       but we can not draw a diagram then either.
    if ( !checkInvariants(true) )
        return;
    d->reverseMapper.clear();

    const int rowCount = model()->rowCount( rootIndex() );
    const int colCount = model()->columnCount( rootIndex() );

    int iRow, iCol;

    const qreal min = dataBoundaries().first.y();
    const qreal r = qAbs( min ) + dataBoundaries().second.y();
    const qreal step = ( r - qAbs( min ) ) / ( numberOfGridRings() );
    
    RadarCoordinatePlane* plane = dynamic_cast<RadarCoordinatePlane*>(ctx->coordinatePlane());
    TextAttributes ta = plane->textAttributes();
    QRectF fontRect = ctx->rectangle();    
    fontRect.setSize( QSizeF( fontRect.width(), step / 2.0 ) );
    const qreal labelFontSize = fitFontSizeToGeometry( QString::fromLatin1( "TestXYWQgqy" ), ta.font(), fontRect, ta );
    QFont labelFont = ta.font();
    ctx->painter()->setPen( ta.pen() );
    labelFont.setPointSizeF( labelFontSize );
    const QFontMetricsF metric( labelFont );
    const qreal labelHeight = metric.height();
    QPointF offset;
    QRectF destRect = ctx->rectangle();    
    if ( ta.isVisible() )
    {        
        destRect.setY( destRect.y() + 2 * labelHeight );
        destRect.setHeight( destRect.height() - 4 * labelHeight );
    }
    
    if ( calculateListAndReturnScale ) {
        ctx->painter()->save();
        // Check if all of the data value texts / data comments will fit
        // into the available space:
        d->labelPaintCache.clear();
        ctx->painter()->save();
        for ( iCol=0; iCol < colCount; ++iCol ) {
            for ( iRow=0; iRow < rowCount; ++iRow ) {
                QModelIndex index = model()->index( iRow, iCol, rootIndex() ); // checked
                const qreal value = model()->data( index ).toReal();
                QPointF point = scaleToRealPosition( QPointF( value, iRow ), ctx->rectangle(), destRect, *ctx->coordinatePlane() );
                d->addLabel( &d->labelPaintCache, index, 0, PositionPoints( point ),
                             Position::Center, Position::Center, value );
            }
        }
        ctx->painter()->restore();
        const qreal oldZoomX = coordinatePlane()->zoomFactorX();
        const qreal oldZoomY = coordinatePlane()->zoomFactorY();
        newZoomX = oldZoomX;
        newZoomY = oldZoomY;
        if ( d->labelPaintCache.paintReplay.count() ) {
            QRectF txtRectF;
            d->paintDataValueTextsAndMarkers( ctx, d->labelPaintCache, true, true, &txtRectF );
            const QRect txtRect = txtRectF.toRect();
            const QRect curRect = coordinatePlane()->geometry();
            const qreal gapX = qMin( txtRect.left() - curRect.left(), curRect.right()  - txtRect.right() );
            const qreal gapY = qMin( txtRect.top()  - curRect.top(),  curRect.bottom() - txtRect.bottom() );
            newZoomX = oldZoomX;
            newZoomY = oldZoomY;
            if ( gapX < 0.0 )
                newZoomX *= 1.0 + (gapX-1.0) / curRect.width();
            if ( gapY < 0.0 )
                newZoomY *= 1.0 + (gapY-1.0) / curRect.height();
        }
        ctx->painter()->restore();

    } else {
        // Iterate through data sets and create a list of polygons out of them.
        QList<Polygon> polygons;
        for ( iCol=0; iCol < colCount; ++iCol ) {
            //TODO(khz): As of yet RadarDiagram can not show per-segment line attributes
            //           but it draws every polyline in one go - using one color.
            //           This needs to be enhanced to allow for cell-specific settings
            //           in the same way as LineDiagram does it.
            QPolygonF polygon;
            QPointF point0;
            for ( iRow=0; iRow < rowCount; ++iRow ) {
                QModelIndex index = model()->index( iRow, iCol, rootIndex() ); // checked
                const qreal value = model()->data( index ).toReal();
                QPointF point = scaleToRealPosition( QPointF( value, d->reverseData ? ( rowCount - iRow ) : iRow ), ctx->rectangle(), destRect, *ctx->coordinatePlane() );
                polygon.append( point );
                if ( ! iRow )
                    point0= point;
            }
            if ( closeDatasets() && rowCount )
                polygon.append( point0 );

            QBrush brush = d->datasetAttrs( iCol, KChart::DatasetBrushRole ).value<QBrush>();
            QPen p = d->datasetAttrs( iCol, KChart::DatasetPenRole ).value< QPen >();
            if ( p.style() != Qt::NoPen )
            {
                polygons.append( Polygon( polygon, brush, PrintingParameters::scalePen( p ) ) );
            }
        }

        // first fill the areas with the brush-color and the defined alpha-value.
        if (d->fillAlpha > 0.0) {
            Q_FOREACH(const Polygon& p, polygons) {
                PainterSaver painterSaver( ctx->painter() );
                ctx->painter()->setRenderHint ( QPainter::Antialiasing );
                QBrush br = p.brush;
                QColor c = br.color();
                c.setAlphaF(d->fillAlpha);
                br.setColor(c);
                ctx->painter()->setBrush( br );
                ctx->painter()->setPen( p.pen );
                ctx->painter()->drawPolygon( p.polygon );
            }
        }