Method measure

DSView/pv/view/viewport.cpp:1581–1691

}

void Viewport::measure()
{
    if (_view.session().is_data_lock())
        return;        
    if (_view.session().is_loop_mode() && _view.session().is_working())
        return;
        
    _measure_type = NO_MEASURE;

    if (_type == TIME_VIEW) {
        const uint64_t sample_rate = _view.session().cur_snap_samplerate();

        for(auto s : _view.session().get_signals()) {
            if (s->signal_type() == SR_CHANNEL_LOGIC) {
                view::LogicSignal *logicSig  = (view::LogicSignal*)s;
                
                if (_action_type == NO_ACTION) {
                    if (logicSig->measure(_mouse_point, _cur_sample, _nxt_sample, _thd_sample)) {
                        _measure_type = LOGIC_FREQ;

                        _mm_width = _view.get_ruler()->format_real_time(_nxt_sample - _cur_sample, sample_rate);
                        _mm_period = _thd_sample != 0 ? _view.get_ruler()->format_real_time(_thd_sample - _cur_sample, sample_rate) : View::Unknown_Str;
                        _mm_freq = _thd_sample != 0 ? _view.get_ruler()->format_real_freq(_thd_sample - _cur_sample, sample_rate) : View::Unknown_Str;

                        _cur_preX = _view.index2pixel(_cur_sample);
                        _cur_aftX = _view.index2pixel(_nxt_sample);
                        _cur_thdX = _view.index2pixel(_thd_sample);
                        _cur_midY = logicSig->get_y();

                        _mm_duty = _thd_sample != 0 ? QString::number((_nxt_sample - _cur_sample) * 100.0 / (_thd_sample - _cur_sample), 'f', 2)+"%" :
                                                     View::Unknown_Str;
                        break;
                    }
                    else {
                        _measure_type = NO_MEASURE;
                        _mm_width = View::Unknown_Str;
                        _mm_period = View::Unknown_Str;
                        _mm_freq = View::Unknown_Str;
                        _mm_duty = View::Unknown_Str;
                    }
                }
                else if (_action_type == LOGIC_EDGE) {
                    if (logicSig->edges(_view.hover_point(), _edge_start, _edge_rising, _edge_falling)) {
                        _cur_preX = _view.index2pixel(_edge_start);
                        _cur_aftX = _view.hover_point().x();
                        _cur_midY = logicSig->get_y() - logicSig->get_totalHeight()/2 - 5;

                        _em_rising = L_S(STR_PAGE_DLG, S_ID(IDS_DLG_RISING), "Rising: ") + QString::number(_edge_rising);
                        _em_falling = L_S(STR_PAGE_DLG, S_ID(IDS_DLG_FALLING), "Falling: ") + QString::number(_edge_falling);
                        _em_edges = L_S(STR_PAGE_DLG, S_ID(IDS_DLG_Edges_1), "Edges: ") + QString::number(_edge_rising + _edge_falling);

                        break;
                    }
                }
                else if (_action_type == LOGIC_JUMP) {
                    if (logicSig->edge(_view.hover_point(), _edge_end, 10)) {
                        _cur_aftX = _view.index2pixel(_edge_end);
                        _cur_aftY = logicSig->get_y();