Method findNodeClicked

cp-profiler/src/cpprofiler/tree/tree_scroll_area.cpp:182–256

Make sure the layout for nodes is done

/// Make sure the layout for nodes is done
NodeID TreeScrollArea::findNodeClicked(int x, int y)
{
    utils::MutexLocker tree_lock(&m_tree.treeMutex());
    utils::MutexLocker layout_lock(&m_layout.getMutex());

    using namespace traditional;

    /// TODO: disable while constructing
    /// calculate real x and y
    auto x_off = horizontalScrollBar()->value();
    auto y_off = verticalScrollBar()->value();

    x = x / m_options.scale + x_off;
    y = y / m_options.scale + y_off;

    std::queue<NodeID> queue;

    auto root = m_tree.getRoot();

    if (root == NodeID::NoNode)
    {
        return NodeID::NoNode;
    }

    queue.push(root);

    while (!queue.empty())
    {

        auto node = queue.front();
        queue.pop();
        auto node_pos = getNodeCoordinate(node);

        const auto hidden = m_vis_flags.isHidden(node);

        QRect node_area;
        if (hidden)
        {
            auto node_pos_tl = node_pos - QPoint{HALF_COLLAPSED_WIDTH, 0};
            node_area = QRect(node_pos_tl, QSize{COLLAPSED_WIDTH, COLLAPSED_DEPTH});
        }
        else
        {
            auto node_pos_tl = node_pos - QPoint{MAX_NODE_W / 2, 0};
            node_area = QRect(node_pos_tl, QSize{MAX_NODE_W, MAX_NODE_W});
        }

        if (node_area.contains(x, y))
        {
            return node;
        }
        else if (!hidden)
        {

            auto kids = m_tree.childrenCount(node);

            for (auto i = 0; i < kids; ++i)
            {