Function legendGradientLabels

docs/app/js/sanddance-app.js:147741–147807

(spec, config, userEncode, dataRef)

}
const alignExpr = `datum.${Perc}<=0?"${Left}":datum.${Perc}>=1?"${Right}":"${Center}"`, baselineExpr = `datum.${Perc}<=0?"${Bottom}":datum.${Perc}>=1?"${Top}":"${Middle}"`;
function legendGradientLabels(spec, config, userEncode, dataRef) {
    const _ = lookup(spec, config), vertical = _.isVertical(), thickness = encoder(_.gradientThickness()), length = _.gradientLength();
    let overlap = _("labelOverlap"), enter, update, u, v, adjust = "";
    const encode = {
        enter: enter = {
            opacity: zero
        },
        update: update = {
            opacity: one,
            text: {
                field: Label
            }
        },
        exit: {
            opacity: zero
        }
    };
    addEncoders(encode, {
        fill: _("labelColor"),
        fillOpacity: _("labelOpacity"),
        font: _("labelFont"),
        fontSize: _("labelFontSize"),
        fontStyle: _("labelFontStyle"),
        fontWeight: _("labelFontWeight"),
        limit: value(spec.labelLimit, config.gradientLabelLimit)
    });
    if (vertical) {
        enter.align = {
            value: "left"
        };
        enter.baseline = update.baseline = {
            signal: baselineExpr
        };
        u = "y";
        v = "x";
        adjust = "1-";
    } else {
        enter.align = update.align = {
            signal: alignExpr
        };
        enter.baseline = {
            value: "top"
        };
        u = "x";
        v = "y";
    }
    enter[u] = update[u] = {
        signal: adjust + "datum." + Perc,
        mult: length
    };
    enter[v] = update[v] = thickness;
    thickness.offset = value(spec.labelOffset, config.gradientLabelOffset) || 0;
    overlap = overlap ? {
        separation: _("labelSeparation"),
        method: overlap,
        order: "datum." + Index
    } : undefined; // type, role, style, key, dataRef, encode, extras
    return guideMark({