Method handle_enter

src/view/wlr-surface-node.cpp:443–447

Idea of handling output enter/leave events: when the event comes, we store the number of enters/leaves for outputs and update them on the next idle. The idea is to cache together multiple events, which may be triggered especially when visibility recomputation happens.

// for outputs and update them on the next idle. The idea is to cache together multiple events, which may
// be triggered especially when visibility recomputation happens.
void wf::scene::wlr_surface_node_t::handle_enter(wf::output_t *output)
{
    pending_visibility_delta[output]++;
    idle_update_outputs.run_once([&] () { update_pending_outputs(); });
}

void wf::scene::wlr_surface_node_t::handle_leave(wf::output_t *output)
{