Function parseTitle

docs/app/js/sanddance-app.js:148583–148606

(spec, scope)

}
const angleExpr = `item.orient==="${Left}"?-90:item.orient==="${Right}"?90:0`;
function parseTitle(spec, scope) {
    spec = (0, _vegaUtil.isString)(spec) ? {
        text: spec
    } : spec;
    const _ = lookup(spec, scope.config.title), encode = spec.encode || {}, userEncode = encode.group || {}, name = userEncode.name || undefined, interactive3 = userEncode.interactive, style = userEncode.style, children = []; // single-element data source for group title
    const datum = {}, dataRef = ref(scope.add(Collect(null, [
        datum
    ]))); // include title text
    children.push(buildTitle(spec, _, titleEncode(spec), dataRef)); // include subtitle text
    if (spec.subtitle) children.push(buildSubTitle(spec, _, encode.subtitle, dataRef));
     // parse title specification
    return parseMark(guideGroup({
        role: TitleRole,
        from: dataRef,
        encode: groupEncode(_, userEncode),
        marks: children,
        aria: _("aria"),
        description: _("description"),
        zindex: _("zindex"),
        name,
        interactive: interactive3,
        style
    }), scope);
} // provide backwards-compatibility for title custom encode;
// the top-level encode block has been *deprecated*.
function titleEncode(spec) {
    const encode = spec.encode;