Method paint

Gui/Edge.cpp:767–832

}

void
Edge::paint(QPainter *painter,
            const QStyleOptionGraphicsItem * /*options*/,
            QWidget * /*parent*/)
{
    bool antialias = appPTR->getCurrentSettings()->isNodeGraphAntiAliasingEnabled();

    if (!antialias) {
        painter->setRenderHint(QPainter::Antialiasing, false);
    }

    QPen myPen = pen();
    NodeGuiPtr dst = _imp->dest.lock();
    if (dst) {
        if ( dst->getDagGui()->isDoingNavigatorRender() ) {
            return;
        }
    }

    if (_imp->paintWithDash) {
        QVector<qreal> dashStyle;
        qreal space = 4;
        dashStyle << 3 << space;
        myPen.setDashPattern(dashStyle);
    } else {
        myPen.setStyle(Qt::SolidLine);
    }

    QColor color, arrowColor;
    if (_imp->useSelected) {
        color = arrowColor = Qt::white;
    } else if (_imp->useHighlight) {
        color = arrowColor = Qt::green;
    } else if (_imp->useRenderingColor) {
        color = arrowColor = _imp->renderingColor;
    } else {
        color = arrowColor = _imp->defaultColor;
        if (_imp->optional && !_imp->paintWithDash) {
            color.setAlphaF(0.4);
        }
    }
    myPen.setColor(color);
    painter->setPen(myPen);


    painter->drawLine( line() );

    myPen.setStyle(Qt::SolidLine);
    painter->setPen(myPen);

    QPainterPath headPath;
    headPath.addPolygon(_imp->arrowHead);
    headPath.closeSubpath();
    myPen.setColor(arrowColor);
    myPen.setJoinStyle(Qt::MiterJoin);
    painter->fillPath(headPath, color);
    painter->strokePath(headPath, myPen); // also draw the outline, or arrows are too small