Method measure

DSView/pv/view/logicsignal.cpp:291–341

}

bool LogicSignal::measure(const QPointF &p, uint64_t &index0, uint64_t &index1, uint64_t &index2)
{
    const float gap = abs(p.y() - get_y());
    if (gap < get_totalHeight() * 0.5) {

        if (_data->empty() || !_data->has_data(_probe->index))
            return false;

        const uint64_t end = _data->get_ring_sample_count() - 1;
        uint64_t index = _data->samplerate() * _view->scale() * (_view->offset() + p.x());
        
        if (index > end){
            return false;
        }

        bool sample = _data->get_sample(index, get_index());
        if (index == 0){
            index0 = index;
        }
        else {
            index--;
            if (_data->get_pre_edge(index, sample, 1, get_index()))
                index0 = index;
            else
                index0 = 0;
        }

        sample = _data->get_sample(index, get_index());
        index++;
        if (_data->get_nxt_edge(index, sample, end, 1, get_index())){
            index1 = index;
        }
        else {
            if (index0 == 0)
                return false;
            index1 = end + 1;
            index2 = 0;
            return true;
        }

        sample = _data->get_sample(index, get_index());
        index++;
        if (_data->get_nxt_edge(index, sample, end, 1, get_index()))
            index2 = index;
        else
            index2 = end + 1;

        return true;
    }
    return false;
}

bool LogicSignal::is_by_edge(const QPointF &p, uint64_t &index, int radius)
{