Method show_region

DSView/pv/view/view.cpp:1328–1352

}

void View::show_region(uint64_t start, uint64_t end, bool keep)
{
    assert(start <= end);

    int width = get_view_width();
    if (width == 0){
        return;
    }

    if (keep) {
        set_all_update(true);
        update();
    }
    else if (_session->get_map_zoom() == 0) {
        const double ideal_scale = (end-start) * 2.0 / _session->cur_snap_samplerate() / width;
        const double new_scale = max (min(ideal_scale, _maxscale), _minscale);
        const double new_off = (start + end)  * 0.5 / (_session->cur_snap_samplerate() * new_scale) - (width / 2);
        set_scale_offset(new_scale, new_off);
    }
    else {
        const double new_scale = scale();
        const double new_off = (start + end)  * 0.5 / (_session->cur_snap_samplerate() * new_scale) - (width/ 2);
        set_scale_offset(new_scale, new_off);
    }
}

void View::viewport_update()
{