Method next_view

plugins/single_plugins/switcher.cpp:794–837

    }

    void next_view(int dir)
    {
        cleanup_expired();

        if (count_different_active_views() <= 1)
        {
            return;
        }

        /* Count of views in the left/right slots */
        int count_right = 0;
        int count_left  = 0;

        /* Move the topmost view from the center and the left/right group,
         * depending on the direction*/
        int to_move = (1 << SWITCHER_POSITION_CENTER) | (1 << (1 - dir));
        for (auto& sv : views)
        {
            if (!view_expired(sv.position) && ((1 << sv.position) & to_move))
            {
                to_move ^= (1 << sv.position); // only the topmost one
                move(sv, dir);
            } else if (!view_expired(sv.position))
            {
                /* Make sure animations start from where we are now */
                sv.refresh_start();
            }

            count_left  += (sv.position == SWITCHER_POSITION_LEFT);
            count_right += (sv.position == SWITCHER_POSITION_RIGHT);
        }

        /* Create a new view on the missing slot, but if both are missing,
         * show just the centered view */
        if (bool(count_left) ^ bool(count_right))
        {
            const int empty_slot = 1 - dir;
            fill_empty_slot(empty_slot);
        }

        rebuild_view_list();
        wf::view_bring_to_front(views.front().view);
        duration.start();
    }

    int count_different_active_views()
    {