send_to_back()

bool MayaFlux::Portal::Forma::Layer::send_to_back

(

uint32_t

id

)

Move element to the bottom of the hit-test and paint order (drawn first), cascading to every related element.

Definition at line 140 of file Layer.cpp.

{
    if (!get(id))
        return false;
 
    const std::vector<uint32_t> ids = closure(id);
 
    auto lower = [this](uint32_t target) {
        auto it = std::ranges::find_if(m_elements,
            [target](const Element& e) { return e.id == target; });
        if (it == m_elements.end())
            return;
        std::rotate(m_elements.begin(), it, it + 1);
        m_index_stale = true;
 
        if (auto& el = m_elements.front(); el.buffer)
            el.buffer.send_to_back(--m_next_back_priority);
    };
 
    for (size_t i = 1; i < ids.size(); ++i)
        lower(ids[i]);
    lower(ids.front());
 
    return true;
}

References closure(), get(), MayaFlux::Portal::Forma::Element::id, ids, m_elements, m_index_stale, and m_next_back_priority.

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