Method paint_mid

DSView/pv/view/dsosignal.cpp:766–869

}

void DsoSignal::paint_mid(QPainter &p, int left, int right, QColor fore, QColor back)
{
    (void)fore;
    (void)back;

    if (!_show || right <= left){
        return;
    }

    assert(_data);
    assert(_view); 

    if (enabled()) {
        const int index = get_index();
        const int width = right - left;
        const float zeroY = get_zero_vpos();

        const double scale = _view->scale();
        assert(scale > 0);
        const int64_t offset = _view->offset();

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

        const uint16_t enabled_channels = _data->get_channel_num();
        const double pixels_offset = offset;
        const double samplerate = _data->samplerate();

        assert(samplerate > 0);
       
        const int64_t last_sample = max((int64_t)(_data->get_sample_count() - 1), (int64_t)0);
        const double samples_per_pixel = samplerate * scale;
        const double start = offset * samples_per_pixel - _view->trig_hoff();
        const double end = start + samples_per_pixel * width;

        const int64_t start_sample = min(max((int64_t)floor(start),
            (int64_t)0), last_sample);
        const int64_t end_sample = min(max((int64_t)ceil(end) + 1,
            (int64_t)0), last_sample);
        const int hw_offset = get_hw_offset();

        if (samples_per_pixel < EnvelopeThreshold) {
            _data->enable_envelope(false);
            paint_trace(p, _data, zeroY, left,
                start_sample, end_sample, hw_offset,
                pixels_offset, samples_per_pixel, enabled_channels);
        } else {
            _data->enable_envelope(true);
            paint_envelope(p, _data, zeroY, left,
                start_sample, end_sample, hw_offset,
                pixels_offset, samples_per_pixel, enabled_channels);
        }

        sr_status status;
        
        if (session->dso_status_is_valid()) {
            _mValid = true;
            status = session->get_dso_status();