Method requestPattern

librecad/src/lib/engine/rs_patternlist.cpp:72–98

* @return Pointer to the pattern with the given name or * \p NULL if no such pattern was found. The pattern will be loaded into * memory if it's not already. */

 * memory if it's not already.
 */
std::unique_ptr<RS_Pattern> RS_PatternList::requestPattern(const QString& name) {
    RS_DEBUG->print("RS_PatternList::requestPattern %s", name.toLatin1().data());

    QString name2 = name.toLower();
    RS_DEBUG->print("Pattern: name2: %s", name2.toLatin1().data());
    if (patterns.count(name2) == 0 || patterns.at(name2) == nullptr) {
        auto p = std::make_unique<RS_Pattern>(name2);
        if (p!=nullptr) {
            p->loadPattern();
            patterns[name2].swap(p);
        }
        else {
            LC_ERR<<"RS_PatternList::"<<__func__<<"(): loading pattern failed: "<<name2;
            RS_DIALOGFACTORY->commandMessage(QObject::tr("Hatch:: loading pattern failed: %1").arg(name2));
            return {};
        }
    }

    if (patterns.count(name2) == 1) {
        RS_DEBUG->print("name2: %s, size= %d", name2.toLatin1().data(),
                        patterns[name2]->countDeep());
        return std::unique_ptr<RS_Pattern>{static_cast<RS_Pattern*>(patterns[name2]->clone())};
	}

    return {};

}

	
bool RS_PatternList::contains(const QString& name) const {