Remove unused "using" declarations.

[pulseview.git] / pv / view / analogsignal.cpp

/*
 * This file is part of the PulseView project.
 *
 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#include <extdef.h>

#include <cassert>
#include <cmath>
#include <cstdlib>
#include <limits>
#include <vector>

#include <QApplication>
#include <QCheckBox>
#include <QComboBox>
#include <QFormLayout>
#include <QGridLayout>
#include <QLabel>
#include <QSpinBox>
#include <QString>

#include "analogsignal.hpp"
#include "pv/data/analog.hpp"
#include "pv/data/analogsegment.hpp"
#include "pv/data/logic.hpp"
#include "pv/data/logicsegment.hpp"
#include "pv/data/signalbase.hpp"
#include "pv/view/view.hpp"
#include "pv/view/logicsignal.hpp"
#include "pv/globalsettings.hpp"

#include <libsigrokcxx/libsigrokcxx.hpp>

using std::deque;
using std::div;
using std::div_t;
using std::max;
using std::make_pair;
using std::min;
using std::numeric_limits;
using std::pair;
using std::shared_ptr;
using std::vector;

namespace pv {
namespace views {
namespace TraceView {

const QColor AnalogSignal::SignalColours[4] = {
        QColor(0xC4, 0xA0, 0x00),       // Yellow
        QColor(0x87, 0x20, 0x7A),       // Magenta
        QColor(0x20, 0x4A, 0x87),       // Blue
        QColor(0x4E, 0x9A, 0x06)        // Green
};

const QColor AnalogSignal::GridMajorColor = QColor(0, 0, 0, 40*256/100);
const QColor AnalogSignal::GridMinorColor = QColor(0, 0, 0, 20*256/100);

const QColor AnalogSignal::SamplingPointColour(0x77, 0x77, 0x77);

const float AnalogSignal::EnvelopeThreshold = 256.0f;

const int AnalogSignal::MaximumVDivs = 10;
const int AnalogSignal::MinScaleIndex = -6;
const int AnalogSignal::MaxScaleIndex = 7;

const int AnalogSignal::InfoTextMarginRight = 20;
const int AnalogSignal::InfoTextMarginBottom = 5;

AnalogSignal::AnalogSignal(
        pv::Session &session,
        shared_ptr<data::SignalBase> base) :
        Signal(session, base),
        scale_index_(4), // 20 per div
        scale_index_drag_offset_(0),
        div_height_(3 * QFontMetrics(QApplication::font()).height()),
        pos_vdivs_(1),
        neg_vdivs_(1),
        resolution_(0),
        conversion_type_(data::SignalBase::NoConversion),
        display_type_(DisplayBoth),
        autoranging_(true)
{
        pv::data::Analog* analog_data =
                dynamic_cast<pv::data::Analog*>(data().get());

        connect(analog_data, SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
                this, SLOT(on_samples_added()));

        base_->set_colour(SignalColours[base_->index() % countof(SignalColours)]);
        update_scale();
}

shared_ptr<pv::data::SignalData> AnalogSignal::data() const
{
        return base_->analog_data();
}

void AnalogSignal::save_settings(QSettings &settings) const
{
        settings.setValue("pos_vdivs", pos_vdivs_);
        settings.setValue("neg_vdivs", neg_vdivs_);
        settings.setValue("scale_index", scale_index_);
        settings.setValue("conversion_type", conversion_type_);
        settings.setValue("display_type", display_type_);
        settings.setValue("autoranging", autoranging_);
}

void AnalogSignal::restore_settings(QSettings &settings)
{
        if (settings.contains("pos_vdivs"))
                pos_vdivs_ = settings.value("pos_vdivs").toInt();

        if (settings.contains("neg_vdivs"))
                neg_vdivs_ = settings.value("neg_vdivs").toInt();

        if (settings.contains("scale_index")) {
                scale_index_ = settings.value("scale_index").toInt();
                update_scale();
        }

        if (settings.contains("conversion_type")) {
                conversion_type_ = (data::SignalBase::ConversionType)(settings.value("conversion_type").toInt());
                update_conversion_type();
        }

        if (settings.contains("display_type"))
                display_type_ = (DisplayType)(settings.value("display_type").toInt());

        if (settings.contains("autoranging"))
                autoranging_ = settings.value("autoranging").toBool();
}

pair<int, int> AnalogSignal::v_extents() const
{
        const int ph = pos_vdivs_ * div_height_;
        const int nh = neg_vdivs_ * div_height_;
        return make_pair(-ph, nh);
}

int AnalogSignal::scale_handle_offset() const
{
        const int h = (pos_vdivs_ + neg_vdivs_) * div_height_;

        return ((scale_index_drag_offset_ - scale_index_) *
                h / 4) - h / 2;
}

void AnalogSignal::scale_handle_dragged(int offset)
{
        const int h = (pos_vdivs_ + neg_vdivs_) * div_height_;

        scale_index_ = scale_index_drag_offset_ -
                (offset + h / 2) / (h / 4);

        update_scale();
}

void AnalogSignal::scale_handle_drag_release()
{
        scale_index_drag_offset_ = scale_index_;
        update_scale();
}

void AnalogSignal::paint_back(QPainter &p, const ViewItemPaintParams &pp)
{
        if (base_->enabled()) {
                Trace::paint_back(p, pp);
                paint_axis(p, pp, get_visual_y());
        }
}

void AnalogSignal::paint_mid(QPainter &p, const ViewItemPaintParams &pp)
{
        assert(base_->analog_data());
        assert(owner_);

        const int y = get_visual_y();

        if (!base_->enabled())
                return;

        if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
                paint_grid(p, y, pp.left(), pp.right());

                const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
                        base_->analog_data()->analog_segments();
                if (segments.empty())
                        return;

                const shared_ptr<pv::data::AnalogSegment> &segment =
                        segments.front();

                const double pixels_offset = pp.pixels_offset();
                const double samplerate = max(1.0, segment->samplerate());
                const pv::util::Timestamp& start_time = segment->start_time();
                const int64_t last_sample = segment->get_sample_count() - 1;
                const double samples_per_pixel = samplerate * pp.scale();
                const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
                const pv::util::Timestamp end = start + samples_per_pixel * pp.width();

                const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
                        (int64_t)0), last_sample);
                const int64_t end_sample = min(max((ceil(end) + 1).convert_to<int64_t>(),
                        (int64_t)0), last_sample);

                if (samples_per_pixel < EnvelopeThreshold)
                        paint_trace(p, segment, y, pp.left(),
                                start_sample, end_sample,
                                pixels_offset, samples_per_pixel);
                else
                        paint_envelope(p, segment, y, pp.left(),
                                start_sample, end_sample,
                                pixels_offset, samples_per_pixel);
        }

        if ((display_type_ == DisplayConverted) || (display_type_ == DisplayBoth)) {
                if (((conversion_type_ == data::SignalBase::A2LConversionByTreshold) ||
                        (conversion_type_ == data::SignalBase::A2LConversionBySchmittTrigger))) {

                        paint_logic_mid(p, pp);
                }
        }
}

void AnalogSignal::paint_fore(QPainter &p, const ViewItemPaintParams &pp)
{
        if (!enabled())
                return;

        if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
                const int y = get_visual_y();

                // Show the info section on the right side of the trace
                const QString infotext = QString("%1 V/div").arg(resolution_);

                p.setPen(base_->colour());
                p.setFont(QApplication::font());

                const QRectF bounding_rect = QRectF(pp.left(),
                                y + v_extents().first,
                                pp.width() - InfoTextMarginRight,
                                v_extents().second - v_extents().first - InfoTextMarginBottom);

                p.drawText(bounding_rect, Qt::AlignRight | Qt::AlignBottom, infotext);
        }
}

void AnalogSignal::paint_grid(QPainter &p, int y, int left, int right)
{
        p.setRenderHint(QPainter::Antialiasing, false);

        if (pos_vdivs_ > 0) {
                p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
                for (int i = 1; i <= pos_vdivs_; i++) {
                        const float dy = i * div_height_;
                        p.drawLine(QLineF(left, y - dy, right, y - dy));
                }

                p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
                for (int i = 0; i < pos_vdivs_; i++) {
                        const float dy = i * div_height_;
                        const float dy25 = dy + (0.25 * div_height_);
                        const float dy50 = dy + (0.50 * div_height_);
                        const float dy75 = dy + (0.75 * div_height_);
                        p.drawLine(QLineF(left, y - dy25, right, y - dy25));
                        p.drawLine(QLineF(left, y - dy50, right, y - dy50));
                        p.drawLine(QLineF(left, y - dy75, right, y - dy75));
                }
        }

        if (neg_vdivs_ > 0) {
                p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
                for (int i = 1; i <= neg_vdivs_; i++) {
                        const float dy = i * div_height_;
                        p.drawLine(QLineF(left, y + dy, right, y + dy));
                }

                p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
                for (int i = 0; i < neg_vdivs_; i++) {
                        const float dy = i * div_height_;
                        const float dy25 = dy + (0.25 * div_height_);
                        const float dy50 = dy + (0.50 * div_height_);
                        const float dy75 = dy + (0.75 * div_height_);
                        p.drawLine(QLineF(left, y + dy25, right, y + dy25));
                        p.drawLine(QLineF(left, y + dy50, right, y + dy50));
                        p.drawLine(QLineF(left, y + dy75, right, y + dy75));
                }
        }

        p.setRenderHint(QPainter::Antialiasing, true);
}

void AnalogSignal::paint_trace(QPainter &p,
        const shared_ptr<pv::data::AnalogSegment> &segment,
        int y, int left, const int64_t start, const int64_t end,
        const double pixels_offset, const double samples_per_pixel)
{
        p.setPen(base_->colour());

        const int64_t points_count = end - start;

        QPointF *points = new QPointF[points_count];
        QPointF *point = points;

        QRectF *const sampling_points = new QRectF[points_count];
        QRectF *sampling_point = sampling_points;

        pv::data::SegmentAnalogDataIterator* it =
                segment->begin_sample_iteration(start);

        const int w = 2;
        for (int64_t sample = start; sample != end; sample++) {
                const float x = (sample / samples_per_pixel -
                        pixels_offset) + left;

                *point++ = QPointF(x, y - *((float*)it->value) * scale_);
                *sampling_point++ = QRectF(x - (w / 2), y - *((float*)it->value) * scale_ - (w / 2), w, w);

                segment->continue_sample_iteration(it, 1);
        }
        segment->end_sample_iteration(it);

        p.drawPolyline(points, points_count);

        // Paint the sampling points if enabled
        GlobalSettings settings;
        const bool show_sampling_points =
                settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();

        if (show_sampling_points && (samples_per_pixel < 0.25)) {
                p.setPen(SamplingPointColour);
                p.drawRects(sampling_points, points_count);
        }

        delete[] points;
        delete[] sampling_points;
}

void AnalogSignal::paint_envelope(QPainter &p,
        const shared_ptr<pv::data::AnalogSegment> &segment,
        int y, int left, const int64_t start, const int64_t end,
        const double pixels_offset, const double samples_per_pixel)
{
        using pv::data::AnalogSegment;

        AnalogSegment::EnvelopeSection e;
        segment->get_envelope_section(e, start, end, samples_per_pixel);

        if (e.length < 2)
                return;

        p.setPen(QPen(Qt::NoPen));
        p.setBrush(base_->colour());

        QRectF *const rects = new QRectF[e.length];
        QRectF *rect = rects;

        for (uint64_t sample = 0; sample < e.length-1; sample++) {
                const float x = ((e.scale * sample + e.start) /
                        samples_per_pixel - pixels_offset) + left;
                const AnalogSegment::EnvelopeSample *const s =
                        e.samples + sample;

                // We overlap this sample with the next so that vertical
                // gaps do not appear during steep rising or falling edges
                const float b = y - max(s->max, (s+1)->min) * scale_;
                const float t = y - min(s->min, (s+1)->max) * scale_;

                float h = b - t;
                if (h >= 0.0f && h <= 1.0f)
                        h = 1.0f;
                if (h <= 0.0f && h >= -1.0f)
                        h = -1.0f;

                *rect++ = QRectF(x, t, 1.0f, h);
        }

        p.drawRects(rects, e.length);

        delete[] rects;
        delete[] e.samples;
}

void AnalogSignal::paint_logic_mid(QPainter &p, const ViewItemPaintParams &pp)
{
        QLineF *line;

        vector< pair<int64_t, bool> > edges;

        assert(base_);

        const int y = get_visual_y();

        if (!base_->enabled())
                return;

        const int signal_margin =
                QFontMetrics(QApplication::font()).height() / 2;

        const int ph = min(pos_vdivs_, 1) * div_height_;
        const int nh = min(neg_vdivs_, 1) * div_height_;
        const float high_offset = y - ph + signal_margin + 0.5f;
        const float low_offset = y + nh - signal_margin - 0.5f;

        const deque< shared_ptr<pv::data::LogicSegment> > &segments =
                base_->logic_data()->logic_segments();
        if (segments.empty())
                return;

        const shared_ptr<pv::data::LogicSegment> &segment =
                segments.front();

        double samplerate = segment->samplerate();

        // Show sample rate as 1Hz when it is unknown
        if (samplerate == 0.0)
                samplerate = 1.0;

        const double pixels_offset = pp.pixels_offset();
        const pv::util::Timestamp& start_time = segment->start_time();
        const int64_t last_sample = segment->get_sample_count() - 1;
        const double samples_per_pixel = samplerate * pp.scale();
        const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
        const pv::util::Timestamp end = start + samples_per_pixel * pp.width();

        const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
                (int64_t)0), last_sample);
        const uint64_t end_sample = min(max(ceil(end).convert_to<int64_t>(),
                (int64_t)0), last_sample);

        segment->get_subsampled_edges(edges, start_sample, end_sample,
                samples_per_pixel / LogicSignal::Oversampling, 0);
        assert(edges.size() >= 2);

        // Paint the edges
        const unsigned int edge_count = edges.size() - 2;
        QLineF *const edge_lines = new QLineF[edge_count];
        line = edge_lines;

        for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
                const float x = ((*i).first / samples_per_pixel -
                        pixels_offset) + pp.left();
                *line++ = QLineF(x, high_offset, x, low_offset);
        }

        p.setPen(LogicSignal::EdgeColour);
        p.drawLines(edge_lines, edge_count);
        delete[] edge_lines;

        // Paint the caps
        const unsigned int max_cap_line_count = edges.size();
        QLineF *const cap_lines = new QLineF[max_cap_line_count];

        p.setPen(LogicSignal::HighColour);
        paint_logic_caps(p, cap_lines, edges, true, samples_per_pixel,
                pixels_offset, pp.left(), high_offset);
        p.setPen(LogicSignal::LowColour);
        paint_logic_caps(p, cap_lines, edges, false, samples_per_pixel,
                pixels_offset, pp.left(), low_offset);

        delete[] cap_lines;

        // Return if we don't need to paint the sampling points
        GlobalSettings settings;
        const bool show_sampling_points =
                settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();

        if (!show_sampling_points || (samples_per_pixel >= 0.25))
                return;

        // Paint the sampling points
        const uint64_t sampling_points_count = end_sample - start_sample + 1;
        QRectF *const sampling_points = new QRectF[sampling_points_count];
        QRectF *sampling_point = sampling_points;

        const int w = 1;
        const float y_middle = high_offset - ((high_offset - low_offset) / 2);
        for (uint64_t i = start_sample; i < end_sample + 1; ++i) {
                const float x = (i / samples_per_pixel - pixels_offset) + pp.left();
                *sampling_point++ = QRectF(x - (w / 2), y_middle - (w / 2), w, w);
        }

        p.setPen(SamplingPointColour);
        p.drawRects(sampling_points, sampling_points_count);
        delete[] sampling_points;
}

void AnalogSignal::paint_logic_caps(QPainter &p, QLineF *const lines,
        vector< pair<int64_t, bool> > &edges, bool level,
        double samples_per_pixel, double pixels_offset, float x_offset,
        float y_offset)
{
        QLineF *line = lines;

        for (auto i = edges.begin(); i != (edges.end() - 1); i++)
                if ((*i).second == level) {
                        *line++ = QLineF(
                                ((*i).first / samples_per_pixel -
                                        pixels_offset) + x_offset, y_offset,
                                ((*(i+1)).first / samples_per_pixel -
                                        pixels_offset) + x_offset, y_offset);
                }

        p.drawLines(lines, line - lines);
}

float AnalogSignal::get_resolution(int scale_index)
{
        const float seq[] = {1.0f, 2.0f, 5.0f};

        const int offset = numeric_limits<int>::max() / (2 * countof(seq));
        const div_t d = div((int)(scale_index + countof(seq) * offset),
                countof(seq));

        return powf(10.0f, d.quot - offset) * seq[d.rem];
}

void AnalogSignal::update_scale()
{
        resolution_ = get_resolution(scale_index_);
        scale_ = div_height_ / resolution_;
}

void AnalogSignal::update_conversion_type()
{
        base_->set_conversion_type(conversion_type_);

        if (owner_)
                owner_->row_item_appearance_changed(false, true);
}

void AnalogSignal::perform_autoranging(bool force_update)
{
        const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
                base_->analog_data()->analog_segments();

        if (segments.empty())
                return;

        static double prev_min = 0, prev_max = 0;
        double min = 0, max = 0;

        for (shared_ptr<pv::data::AnalogSegment> segment : segments) {
                pair<double, double> mm = segment->get_min_max();
                min = std::min(min, mm.first);
                max = std::max(max, mm.second);
        }

        if ((min == prev_min) && (max == prev_max) && !force_update)
                return;

        prev_min = min;
        prev_max = max;

        // Use all divs for the positive range if there are no negative values
        if ((min == 0) && (neg_vdivs_ > 0)) {
                pos_vdivs_ += neg_vdivs_;
                neg_vdivs_ = 0;
        }

        // Split up the divs if there are negative values but no negative divs
        if ((min < 0) && (neg_vdivs_ == 0)) {
                neg_vdivs_ = pos_vdivs_ / 2;
                pos_vdivs_ -= neg_vdivs_;
        }

        double min_value_per_div;
        if ((pos_vdivs_ > 0) && (neg_vdivs_ >  0))
                min_value_per_div = std::max(max / pos_vdivs_, -min / neg_vdivs_);
        else if (pos_vdivs_ > 0)
                min_value_per_div = max / pos_vdivs_;
        else
                min_value_per_div = -min / neg_vdivs_;

        // Find first scale value that is bigger than the value we need
        for (int i = MinScaleIndex; i < MaxScaleIndex; i++)
                if (get_resolution(i) > min_value_per_div) {
                        scale_index_ = i;
                        break;
                }

        update_scale();
}

void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
{
        // Add the standard options
        Signal::populate_popup_form(parent, form);

        QFormLayout *const layout = new QFormLayout;

        // Add the number of vdivs
        QSpinBox *pvdiv_sb = new QSpinBox(parent);
        pvdiv_sb->setRange(0, MaximumVDivs);
        pvdiv_sb->setValue(pos_vdivs_);
        connect(pvdiv_sb, SIGNAL(valueChanged(int)),
                this, SLOT(on_pos_vdivs_changed(int)));
        layout->addRow(tr("Number of pos vertical divs"), pvdiv_sb);

        QSpinBox *nvdiv_sb = new QSpinBox(parent);
        nvdiv_sb->setRange(0, MaximumVDivs);
        nvdiv_sb->setValue(neg_vdivs_);
        connect(nvdiv_sb, SIGNAL(valueChanged(int)),
                this, SLOT(on_neg_vdivs_changed(int)));
        layout->addRow(tr("Number of neg vertical divs"), nvdiv_sb);

        // Add the vertical resolution
        resolution_cb_ = new QComboBox(parent);

        for (int i = MinScaleIndex; i < MaxScaleIndex; i++) {
                const QString label = QString("%1").arg(get_resolution(i));
                resolution_cb_->insertItem(0, label, QVariant(i));
        }

        int cur_idx = resolution_cb_->findData(QVariant(scale_index_));
        resolution_cb_->setCurrentIndex(cur_idx);

        connect(resolution_cb_, SIGNAL(currentIndexChanged(int)),
                this, SLOT(on_resolution_changed(int)));

        QGridLayout *const vdiv_layout = new QGridLayout;
        QLabel *const vdiv_unit = new QLabel(tr("V/div"));
        vdiv_layout->addWidget(resolution_cb_, 0, 0);
        vdiv_layout->addWidget(vdiv_unit, 0, 1);

        layout->addRow(tr("Vertical resolution"), vdiv_layout);

        // Add the autoranging checkbox
        QCheckBox* autoranging_cb = new QCheckBox();
        autoranging_cb->setCheckState(autoranging_ ? Qt::Checked : Qt::Unchecked);

        connect(autoranging_cb, SIGNAL(stateChanged(int)),
                this, SLOT(on_autoranging_changed(int)));

        layout->addRow(tr("Autoranging"), autoranging_cb);

        // Add the conversion type dropdown
        conversion_cb_ = new QComboBox();

        conversion_cb_->addItem("none", data::SignalBase::NoConversion);
        conversion_cb_->addItem("to logic via threshold", data::SignalBase::A2LConversionByTreshold);
        conversion_cb_->addItem("to logic via schmitt-trigger", data::SignalBase::A2LConversionBySchmittTrigger);

        cur_idx = conversion_cb_->findData(QVariant(conversion_type_));
        conversion_cb_->setCurrentIndex(cur_idx);

        layout->addRow(tr("Conversion"), conversion_cb_);

        connect(conversion_cb_, SIGNAL(currentIndexChanged(int)),
                this, SLOT(on_conversion_changed(int)));

        // Add the display type dropdown
        display_type_cb_ = new QComboBox();

        display_type_cb_->addItem(tr("Analog"), DisplayAnalog);
        display_type_cb_->addItem(tr("Converted"), DisplayConverted);
        display_type_cb_->addItem(tr("Both"), DisplayBoth);

        cur_idx = display_type_cb_->findData(QVariant(display_type_));
        display_type_cb_->setCurrentIndex(cur_idx);

        layout->addRow(tr("Traces to show:"), display_type_cb_);

        connect(display_type_cb_, SIGNAL(currentIndexChanged(int)),
                this, SLOT(on_display_type_changed(int)));

        form->addRow(layout);
}

void AnalogSignal::on_samples_added()
{
        perform_autoranging();

        if (owner_) {
                // Call order is important, otherwise the lazy event handler won't work
                owner_->extents_changed(false, true);
                owner_->row_item_appearance_changed(false, true);
        }
}

void AnalogSignal::on_pos_vdivs_changed(int vdivs)
{
        pos_vdivs_ = vdivs;

        if (autoranging_)
                perform_autoranging(true);

        if (owner_) {
                // Call order is important, otherwise the lazy event handler won't work
                owner_->extents_changed(false, true);
                owner_->row_item_appearance_changed(false, true);
        }
}

void AnalogSignal::on_neg_vdivs_changed(int vdivs)
{
        neg_vdivs_ = vdivs;

        if (autoranging_)
                perform_autoranging(true);

        if (owner_) {
                // Call order is important, otherwise the lazy event handler won't work
                owner_->extents_changed(false, true);
                owner_->row_item_appearance_changed(false, true);
        }
}

void AnalogSignal::on_resolution_changed(int index)
{
        scale_index_ = resolution_cb_->itemData(index).toInt();
        update_scale();

        if (owner_)
                owner_->row_item_appearance_changed(false, true);
}

void AnalogSignal::on_autoranging_changed(int state)
{
        autoranging_ = (state == Qt::Checked);

        if (autoranging_)
                perform_autoranging(true);

        if (owner_) {
                // Call order is important, otherwise the lazy event handler won't work
                owner_->extents_changed(false, true);
                owner_->row_item_appearance_changed(false, true);
        }
}

void AnalogSignal::on_conversion_changed(int index)
{
        data::SignalBase::ConversionType old_conv_type = conversion_type_;

        conversion_type_ = (data::SignalBase::ConversionType)(conversion_cb_->itemData(index).toInt());

        if (conversion_type_ != old_conv_type) {
                base_->set_conversion_type(conversion_type_);
                update_conversion_type();
        }
}

void AnalogSignal::on_display_type_changed(int index)
{
        display_type_ = (DisplayType)(display_type_cb_->itemData(index).toInt());

        if (owner_)
                owner_->row_item_appearance_changed(false, true);
}

} // namespace TraceView
} // namespace views
} // namespace pv