Method removeChild

snap_drawing/src/snap_drawing/cpp/Layers/Layer.cpp:252–273

void Layer::onChildRemoved(Layer* /*childLayer*/) {}

void Layer::removeChild(Layer* childLayer, bool shouldNotify) {
    auto erased = false;
    {
        auto children = _children.writeAccess();
        auto it = children->begin();
        while (it != children->end()) {
            if (it->get() == childLayer) {
                it = children->erase(it);
                erased = true;
            } else {
                it++;
            }
        }
    }

    if (erased) {
        if (shouldNotify) {
            onChildRemoved(childLayer);
        }
        setChildNeedsDisplay();
    }
}

void Layer::removeFromParent() {
    removeFromParent(true);