Method update

player/NymphCastPlayer/container_qpainter.cpp:375–435

}

void Selection::update()
{
    const auto addElement = [this](const Selection::Element &element,
                                   const Selection::Element &end = {}) {
        litehtml::tstring elemText;
        element.element->get_text(elemText);
        const QString textStr = QString::fromStdString(elemText);
        if (!textStr.isEmpty()) {
            QRect rect = toQRect(element.element->get_placement()).adjusted(-1, -1, 1, 1);
            if (element.index < 0) { // fully selected
                text += textStr;
            } else if (end.element) { // select from element "to end"
                if (element.element == end.element) {
                    // end.index is guaranteed to be >= element.index by caller, same for x
                    text += textStr.mid(element.index, end.index - element.index);
                    const int left = rect.left();
                    rect.setLeft(left + element.x);
                    rect.setRight(left + end.x);
                } else {
                    text += textStr.mid(element.index);
                    rect.setLeft(rect.left() + element.x);
                }
            } else { // select from start of element
                text += textStr.left(element.index);
                rect.setRight(rect.left() + element.x);
            }
            selection.append(rect);
        }
    };

    if (startElem.element && endElem.element) {
        // Edge cases:
        // start and end elements could be reversed or children of each other
        Selection::Element start;
        Selection::Element end;
        std::tie(start, end) = getStartAndEnd(startElem, endElem);

        selection.clear();
        text.clear();

        // Treats start element as a leaf even if it isn't, because it already contains all its
        // children
        addElement(start, end);
        if (start.element != end.element) {
            litehtml::element::ptr current = start.element;
            do {
                current = nextLeaf(current, end.element);
                if (current == end.element)
                    addElement(end);
                else
                    addElement({current, -1, -1});
            } while (current != end.element);
        }
    } else {
        selection = {};
        text.clear();
    }
    QClipboard *cb = QGuiApplication::clipboard();