pv/views/trace/analogsignal.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <extdef.h>
  21
  22 #include <cassert>
  23 #include <cmath>
  24 #include <cstdlib>
  25 #include <limits>
  26 #include <vector>
  27
  28 #include <QApplication>
  29 #include <QCheckBox>
  30 #include <QComboBox>
  31 #include <QDebug>
  32 #include <QFormLayout>
  33 #include <QGridLayout>
  34 #include <QLabel>
  35 #include <QString>
  36
  37 #include "analogsignal.hpp"
  38 #include "logicsignal.hpp"
  39 #include "view.hpp"
  40
  41 #include "pv/util.hpp"
  42 #include "pv/data/analog.hpp"
  43 #include "pv/data/analogsegment.hpp"
  44 #include "pv/data/logic.hpp"
  45 #include "pv/data/logicsegment.hpp"
  46 #include "pv/data/signalbase.hpp"
  47 #include "pv/globalsettings.hpp"
  48
  49 #include <libsigrokcxx/libsigrokcxx.hpp>
  50
  51 using std::deque;
  52 using std::div;
  53 using std::div_t;
  54 // Note that "using std::isnan;" is _not_ put here since that would break
  55 // compilation on some platforms. Use "std::isnan()" instead in checks below.
  56 using std::max;
  57 using std::make_pair;
  58 using std::min;
  59 using std::numeric_limits;
  60 using std::out_of_range;
  61 using std::pair;
  62 using std::shared_ptr;
  63 using std::vector;
  64
  65 using pv::data::LogicSegment;
  66 using pv::data::SignalBase;
  67 using pv::util::SIPrefix;
  68
  69 namespace pv {
  70 namespace views {
  71 namespace trace {
  72
  73 const QColor AnalogSignal::SignalColors[4] = {
  74         QColor(0xC4, 0xA0, 0x00),       // Yellow
  75         QColor(0x87, 0x20, 0x7A),       // Magenta
  76         QColor(0x20, 0x4A, 0x87),       // Blue
  77         QColor(0x4E, 0x9A, 0x06)        // Green
  78 };
  79
  80 const QPen AnalogSignal::AxisPen(QColor(0, 0, 0, 30 * 256 / 100), 2);
  81 const QColor AnalogSignal::GridMajorColor = QColor(0, 0, 0, 40 * 256 / 100);
  82 const QColor AnalogSignal::GridMinorColor = QColor(0, 0, 0, 20 * 256 / 100);
  83
  84 const QColor AnalogSignal::SamplingPointColor(0x77, 0x77, 0x77);
  85 const QColor AnalogSignal::SamplingPointColorLo = QColor(200, 0, 0, 80 * 256 / 100);
  86 const QColor AnalogSignal::SamplingPointColorNe = QColor(0,   0, 0, 80 * 256 / 100);
  87 const QColor AnalogSignal::SamplingPointColorHi = QColor(0, 200, 0, 80 * 256 / 100);
  88
  89 const QColor AnalogSignal::ThresholdColor = QColor(0, 0, 0, 30 * 256 / 100);
  90 const QColor AnalogSignal::ThresholdColorLo = QColor(255, 0, 0, 8 * 256 / 100);
  91 const QColor AnalogSignal::ThresholdColorNe = QColor(0,   0, 0, 10 * 256 / 100);
  92 const QColor AnalogSignal::ThresholdColorHi = QColor(0, 255, 0, 8 * 256 / 100);
  93
  94 const int64_t AnalogSignal::TracePaintBlockSize = 1024 * 1024;  // 4 MiB (due to float)
  95 const float AnalogSignal::EnvelopeThreshold = 64.0f;
  96
  97 const int AnalogSignal::MaximumVDivs = 10;
  98 const int AnalogSignal::MinScaleIndex = -6;
  99 const int AnalogSignal::MaxScaleIndex = 7;
 100
 101 const int AnalogSignal::InfoTextMarginRight = 20;
 102 const int AnalogSignal::InfoTextMarginBottom = 5;
 103
 104 AnalogSignal::AnalogSignal(
 105         pv::Session &session,
 106         shared_ptr<data::SignalBase> base) :
 107         Signal(session, base),
 108         scale_index_(4), // 20 per div
 109         pos_vdivs_(1),
 110         neg_vdivs_(1),
 111         resolution_(0),
 112         display_type_(DisplayBoth),
 113         autoranging_(true),
 114         value_at_hover_pos_(std::numeric_limits<float>::quiet_NaN())
 115 {
 116         axis_pen_ = AxisPen;
 117
 118         pv::data::Analog* analog_data =
 119                 dynamic_cast<pv::data::Analog*>(data().get());
 120
 121         connect(analog_data, SIGNAL(min_max_changed(float, float)),
 122                 this, SLOT(on_min_max_changed(float, float)));
 123
 124         GlobalSettings gs;
 125         conversion_threshold_disp_mode_ =
 126                 gs.value(GlobalSettings::Key_View_ConversionThresholdDispMode).toInt();
 127
 128         div_height_ = gs.value(GlobalSettings::Key_View_DefaultDivHeight).toInt();
 129
 130         base_->set_color(SignalColors[base_->index() % countof(SignalColors)]);
 131         update_scale();
 132 }
 133
 134 shared_ptr<pv::data::SignalData> AnalogSignal::data() const
 135 {
 136         return base_->analog_data();
 137 }
 138
 139 void AnalogSignal::save_settings(QSettings &settings) const
 140 {
 141         settings.setValue("pos_vdivs", pos_vdivs_);
 142         settings.setValue("neg_vdivs", neg_vdivs_);
 143         settings.setValue("scale_index", scale_index_);
 144         settings.setValue("display_type", display_type_);
 145         settings.setValue("autoranging", autoranging_);
 146         settings.setValue("div_height", div_height_);
 147 }
 148
 149 void AnalogSignal::restore_settings(QSettings &settings)
 150 {
 151         if (settings.contains("pos_vdivs"))
 152                 pos_vdivs_ = settings.value("pos_vdivs").toInt();
 153
 154         if (settings.contains("neg_vdivs"))
 155                 neg_vdivs_ = settings.value("neg_vdivs").toInt();
 156
 157         if (settings.contains("scale_index")) {
 158                 scale_index_ = settings.value("scale_index").toInt();
 159                 update_scale();
 160         }
 161
 162         if (settings.contains("display_type"))
 163                 display_type_ = (DisplayType)(settings.value("display_type").toInt());
 164
 165         if (settings.contains("autoranging"))
 166                 autoranging_ = settings.value("autoranging").toBool();
 167
 168         if (settings.contains("div_height")) {
 169                 const int old_height = div_height_;
 170                 div_height_ = settings.value("div_height").toInt();
 171
 172                 if ((div_height_ != old_height) && owner_) {
 173                         // Call order is important, otherwise the lazy event handler won't work
 174                         owner_->extents_changed(false, true);
 175                         owner_->row_item_appearance_changed(false, true);
 176                 }
 177         }
 178 }
 179
 180 pair<int, int> AnalogSignal::v_extents() const
 181 {
 182         const int ph = pos_vdivs_ * div_height_;
 183         const int nh = neg_vdivs_ * div_height_;
 184         return make_pair(-ph, nh);
 185 }
 186
 187 void AnalogSignal::on_setting_changed(const QString &key, const QVariant &value)
 188 {
 189         Signal::on_setting_changed(key, value);
 190
 191         if (key == GlobalSettings::Key_View_ConversionThresholdDispMode)
 192                 on_settingViewConversionThresholdDispMode_changed(value);
 193 }
 194
 195 void AnalogSignal::paint_back(QPainter &p, ViewItemPaintParams &pp)
 196 {
 197         if (!base_->enabled())
 198                 return;
 199
 200         bool paint_thr_bg =
 201                 conversion_threshold_disp_mode_ == GlobalSettings::ConvThrDispMode_Background;
 202
 203         const vector<double> thresholds = base_->get_conversion_thresholds();
 204
 205         // Only display thresholds if we have some and we show analog samples
 206         if ((thresholds.size() > 0) && paint_thr_bg &&
 207                 ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth))) {
 208
 209                 const int visual_y = get_visual_y();
 210                 const pair<int, int> extents = v_extents();
 211                 const int top = visual_y + extents.first;
 212                 const int btm = visual_y + extents.second;
 213
 214                 // Draw high/neutral/low areas
 215                 if (thresholds.size() == 2) {
 216                         int thr_lo = visual_y - thresholds[0] * scale_;
 217                         int thr_hi = visual_y - thresholds[1] * scale_;
 218                         thr_lo = min(max(thr_lo, top), btm);
 219                         thr_hi = min(max(thr_hi, top), btm);
 220
 221                         p.fillRect(QRectF(pp.left(), top, pp.width(), thr_hi - top),
 222                                 QBrush(ThresholdColorHi));
 223                         p.fillRect(QRectF(pp.left(), thr_hi, pp.width(), thr_lo - thr_hi),
 224                                 QBrush(ThresholdColorNe));
 225                         p.fillRect(QRectF(pp.left(), thr_lo, pp.width(), btm - thr_lo),
 226                                 QBrush(ThresholdColorLo));
 227                 } else {
 228                         int thr = visual_y - thresholds[0] * scale_;
 229                         thr = min(max(thr, top), btm);
 230
 231                         p.fillRect(QRectF(pp.left(), top, pp.width(), thr - top),
 232                                 QBrush(ThresholdColorHi));
 233                         p.fillRect(QRectF(pp.left(), thr, pp.width(), btm - thr),
 234                                 QBrush(ThresholdColorLo));
 235                 }
 236
 237                 paint_axis(p, pp, get_visual_y());
 238         } else {
 239                 Trace::paint_back(p, pp);
 240                 paint_axis(p, pp, get_visual_y());
 241         }
 242 }
 243
 244 void AnalogSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
 245 {
 246         assert(base_->analog_data());
 247         assert(owner_);
 248
 249         const int y = get_visual_y();
 250
 251         if (!base_->enabled())
 252                 return;
 253
 254         if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
 255                 paint_grid(p, y, pp.left(), pp.right());
 256
 257                 shared_ptr<pv::data::AnalogSegment> segment = get_analog_segment_to_paint();
 258                 if (!segment || (segment->get_sample_count() == 0))
 259                         return;
 260
 261                 const double pixels_offset = pp.pixels_offset();
 262                 const double samplerate = max(1.0, segment->samplerate());
 263                 const pv::util::Timestamp& start_time = segment->start_time();
 264                 const int64_t last_sample = (int64_t)segment->get_sample_count() - 1;
 265                 const double samples_per_pixel = samplerate * pp.scale();
 266                 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
 267                 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
 268
 269                 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
 270                         (int64_t)0), last_sample);
 271                 const int64_t end_sample = min(max((ceil(end) + 1).convert_to<int64_t>(),
 272                         (int64_t)0), last_sample);
 273
 274                 if (samples_per_pixel < EnvelopeThreshold)
 275                         paint_trace(p, segment, y, pp.left(), start_sample, end_sample,
 276                                 pixels_offset, samples_per_pixel);
 277                 else
 278                         paint_envelope(p, segment, y, pp.left(), start_sample, end_sample,
 279                                 pixels_offset, samples_per_pixel);
 280         }
 281
 282         if ((display_type_ == DisplayConverted) || (display_type_ == DisplayBoth))
 283                 paint_logic_mid(p, pp);
 284 }
 285
 286 void AnalogSignal::paint_fore(QPainter &p, ViewItemPaintParams &pp)
 287 {
 288         if (!enabled())
 289                 return;
 290
 291         if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
 292                 const int y = get_visual_y();
 293
 294                 QString infotext;
 295
 296                 // Show the info section on the right side of the trace, including
 297                 // the value at the hover point when the hover marker is enabled
 298                 // and we have corresponding data available
 299                 if (show_hover_marker_ && !std::isnan(value_at_hover_pos_)) {
 300                         infotext = QString("[%1] %2 V/div")
 301                                 .arg(format_value_si(value_at_hover_pos_, SIPrefix::unspecified, 0, "V", false))
 302                                 .arg(resolution_);
 303                 } else
 304                         infotext = QString("%1 V/div").arg(resolution_);
 305
 306                 p.setPen(base_->color());
 307                 p.setFont(QApplication::font());
 308
 309                 const QRectF bounding_rect = QRectF(pp.left(),
 310                                 y + v_extents().first,
 311                                 pp.width() - InfoTextMarginRight,
 312                                 v_extents().second - v_extents().first - InfoTextMarginBottom);
 313
 314                 p.drawText(bounding_rect, Qt::AlignRight | Qt::AlignBottom, infotext);
 315         }
 316
 317         if (show_hover_marker_)
 318                 paint_hover_marker(p);
 319 }
 320
 321 void AnalogSignal::paint_grid(QPainter &p, int y, int left, int right)
 322 {
 323         p.setRenderHint(QPainter::Antialiasing, false);
 324
 325         GlobalSettings settings;
 326         const bool show_analog_minor_grid =
 327                 settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool();
 328
 329         if (pos_vdivs_ > 0) {
 330                 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
 331                 for (int i = 1; i <= pos_vdivs_; i++) {
 332                         const float dy = i * div_height_;
 333                         p.drawLine(QLineF(left, y - dy, right, y - dy));
 334                 }
 335         }
 336
 337         if ((pos_vdivs_ > 0) && show_analog_minor_grid) {
 338                 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
 339                 for (int i = 0; i < pos_vdivs_; i++) {
 340                         const float dy = i * div_height_;
 341                         const float dy25 = dy + (0.25 * div_height_);
 342                         const float dy50 = dy + (0.50 * div_height_);
 343                         const float dy75 = dy + (0.75 * div_height_);
 344                         p.drawLine(QLineF(left, y - dy25, right, y - dy25));
 345                         p.drawLine(QLineF(left, y - dy50, right, y - dy50));
 346                         p.drawLine(QLineF(left, y - dy75, right, y - dy75));
 347                 }
 348         }
 349
 350         if (neg_vdivs_ > 0) {
 351                 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
 352                 for (int i = 1; i <= neg_vdivs_; i++) {
 353                         const float dy = i * div_height_;
 354                         p.drawLine(QLineF(left, y + dy, right, y + dy));
 355                 }
 356         }
 357
 358         if ((pos_vdivs_ > 0) && show_analog_minor_grid) {
 359                 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
 360                 for (int i = 0; i < neg_vdivs_; i++) {
 361                         const float dy = i * div_height_;
 362                         const float dy25 = dy + (0.25 * div_height_);
 363                         const float dy50 = dy + (0.50 * div_height_);
 364                         const float dy75 = dy + (0.75 * div_height_);
 365                         p.drawLine(QLineF(left, y + dy25, right, y + dy25));
 366                         p.drawLine(QLineF(left, y + dy50, right, y + dy50));
 367                         p.drawLine(QLineF(left, y + dy75, right, y + dy75));
 368                 }
 369         }
 370
 371         p.setRenderHint(QPainter::Antialiasing, true);
 372 }
 373
 374 void AnalogSignal::paint_trace(QPainter &p,
 375         const shared_ptr<pv::data::AnalogSegment> &segment,
 376         int y, int left, const int64_t start, const int64_t end,
 377         const double pixels_offset, const double samples_per_pixel)
 378 {
 379         if (end <= start)
 380                 return;
 381
 382         bool paint_thr_dots =
 383                 (base_->get_conversion_type() != data::SignalBase::NoConversion) &&
 384                 (conversion_threshold_disp_mode_ == GlobalSettings::ConvThrDispMode_Dots);
 385
 386         vector<double> thresholds;
 387         if (paint_thr_dots)
 388                 thresholds = base_->get_conversion_thresholds();
 389
 390         // Calculate and paint the sampling points if enabled and useful
 391         GlobalSettings settings;
 392         const bool show_sampling_points =
 393                 (settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() ||
 394                 paint_thr_dots) && (samples_per_pixel < 0.25);
 395
 396         p.setPen(base_->color());
 397
 398         const int64_t points_count = end - start + 1;
 399
 400         QPointF *points = new QPointF[points_count];
 401         QPointF *point = points;
 402
 403         vector<QRectF> sampling_points[3];
 404
 405         int64_t sample_count = min(points_count, TracePaintBlockSize);
 406         int64_t block_sample = 0;
 407         float *sample_block = new float[TracePaintBlockSize];
 408         segment->get_samples(start, start + sample_count, sample_block);
 409
 410         if (show_hover_marker_)
 411                 reset_pixel_values();
 412
 413         const int w = 2;
 414         for (int64_t sample = start; sample <= end; sample++, block_sample++) {
 415
 416                 // Fetch next block of samples if we finished the current one
 417                 if (block_sample == TracePaintBlockSize) {
 418                         block_sample = 0;
 419                         sample_count = min(points_count - sample, TracePaintBlockSize);
 420                         segment->get_samples(sample, sample + sample_count, sample_block);
 421                 }
 422
 423                 const float abs_x = sample / samples_per_pixel - pixels_offset;
 424                 const float x = left + abs_x;
 425
 426                 *point++ = QPointF(x, y - sample_block[block_sample] * scale_);
 427
 428                 // Generate the pixel<->value lookup table for the mouse hover
 429                 if (show_hover_marker_)
 430                         process_next_sample_value(abs_x, sample_block[block_sample]);
 431
 432                 // Create the sampling points if needed
 433                 if (show_sampling_points) {
 434                         int idx = 0;  // Neutral
 435
 436                         if (paint_thr_dots) {
 437                                 if (thresholds.size() == 1)
 438                                         idx = (sample_block[block_sample] >= thresholds[0]) ? 2 : 1;
 439                                 else if (thresholds.size() == 2) {
 440                                         if (sample_block[block_sample] > thresholds[1])
 441                                                 idx = 2;  // High
 442                                         else if (sample_block[block_sample] < thresholds[0])
 443                                                 idx = 1;  // Low
 444                                 }
 445                         }
 446
 447                         sampling_points[idx].emplace_back(x - (w / 2), y - sample_block[block_sample] * scale_ - (w / 2), w, w);
 448                 }
 449         }
 450         delete[] sample_block;
 451
 452         p.drawPolyline(points, points_count);
 453
 454         if (show_sampling_points) {
 455                 if (paint_thr_dots) {
 456                         p.setPen(SamplingPointColorNe);
 457                         p.drawRects(sampling_points[0].data(), sampling_points[0].size());
 458                         p.setPen(SamplingPointColorLo);
 459                         p.drawRects(sampling_points[1].data(), sampling_points[1].size());
 460                         p.setPen(SamplingPointColorHi);
 461                         p.drawRects(sampling_points[2].data(), sampling_points[2].size());
 462                 } else {
 463                         p.setPen(SamplingPointColor);
 464                         p.drawRects(sampling_points[0].data(), sampling_points[0].size());
 465                 }
 466         }
 467
 468         delete[] points;
 469 }
 470
 471 void AnalogSignal::paint_envelope(QPainter &p,
 472         const shared_ptr<pv::data::AnalogSegment> &segment,
 473         int y, int left, const int64_t start, const int64_t end,
 474         const double pixels_offset, const double samples_per_pixel)
 475 {
 476         using pv::data::AnalogSegment;
 477
 478         // Note: Envelope painting currently doesn't generate a pixel<->value lookup table
 479         if (show_hover_marker_)
 480                 reset_pixel_values();
 481
 482         AnalogSegment::EnvelopeSection e;
 483         segment->get_envelope_section(e, start, end, samples_per_pixel);
 484
 485         if (e.length < 2)
 486                 return;
 487
 488         p.setPen(QPen(Qt::NoPen));
 489         p.setBrush(base_->color());
 490
 491         QRectF *const rects = new QRectF[e.length];
 492         QRectF *rect = rects;
 493
 494         for (uint64_t sample = 0; sample < e.length - 1; sample++) {
 495                 const float x = ((e.scale * sample + e.start) /
 496                         samples_per_pixel - pixels_offset) + left;
 497
 498                 const AnalogSegment::EnvelopeSample *const s = e.samples + sample;
 499
 500                 // We overlap this sample with the next so that vertical
 501                 // gaps do not appear during steep rising or falling edges
 502                 const float b = y - max(s->max, (s + 1)->min) * scale_;
 503                 const float t = y - min(s->min, (s + 1)->max) * scale_;
 504
 505                 float h = b - t;
 506                 if (h >= 0.0f && h <= 1.0f)
 507                         h = 1.0f;
 508                 if (h <= 0.0f && h >= -1.0f)
 509                         h = -1.0f;
 510
 511                 *rect++ = QRectF(x, t, 1.0f, h);
 512         }
 513
 514         p.drawRects(rects, e.length);
 515
 516         delete[] rects;
 517         delete[] e.samples;
 518 }
 519
 520 void AnalogSignal::paint_logic_mid(QPainter &p, ViewItemPaintParams &pp)
 521 {
 522         QLineF *line;
 523
 524         vector< pair<int64_t, bool> > edges;
 525
 526         assert(base_);
 527
 528         const int y = get_visual_y();
 529
 530         if (!base_->enabled() || !base_->logic_data())
 531                 return;
 532
 533         const int signal_margin =
 534                 QFontMetrics(QApplication::font()).height() / 2;
 535
 536         const int ph = min(pos_vdivs_, 1) * div_height_;
 537         const int nh = min(neg_vdivs_, 1) * div_height_;
 538         const float high_offset = y - ph + signal_margin + 0.5f;
 539         const float low_offset = y + nh - signal_margin - 0.5f;
 540         const float signal_height = low_offset - high_offset;
 541
 542         shared_ptr<pv::data::LogicSegment> segment = get_logic_segment_to_paint();
 543         if (!segment || (segment->get_sample_count() == 0))
 544                 return;
 545
 546         double samplerate = segment->samplerate();
 547
 548         // Show sample rate as 1Hz when it is unknown
 549         if (samplerate == 0.0)
 550                 samplerate = 1.0;
 551
 552         const double pixels_offset = pp.pixels_offset();
 553         const pv::util::Timestamp& start_time = segment->start_time();
 554         const int64_t last_sample = (int64_t)segment->get_sample_count() - 1;
 555         const double samples_per_pixel = samplerate * pp.scale();
 556         const double pixels_per_sample = 1 / samples_per_pixel;
 557         const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
 558         const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
 559
 560         const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
 561                 (int64_t)0), last_sample);
 562         const uint64_t end_sample = min(max(ceil(end).convert_to<int64_t>(),
 563                 (int64_t)0), last_sample);
 564
 565         segment->get_subsampled_edges(edges, start_sample, end_sample,
 566                 samples_per_pixel / LogicSignal::Oversampling, 0);
 567         assert(edges.size() >= 2);
 568
 569         const float first_sample_x =
 570                 pp.left() + (edges.front().first / samples_per_pixel - pixels_offset);
 571         const float last_sample_x =
 572                 pp.left() + (edges.back().first / samples_per_pixel - pixels_offset);
 573
 574         // Check whether we need to paint the sampling points
 575         GlobalSettings settings;
 576         const bool show_sampling_points =
 577                 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() &&
 578                 (samples_per_pixel < 0.25);
 579
 580         vector<QRectF> sampling_points;
 581         float sampling_point_x = first_sample_x;
 582         int64_t sampling_point_sample = start_sample;
 583         const int w = 2;
 584
 585         if (show_sampling_points)
 586                 sampling_points.reserve(end_sample - start_sample + 1);
 587
 588         // Check whether we need to fill the high areas
 589         const bool fill_high_areas =
 590                 settings.value(GlobalSettings::Key_View_FillSignalHighAreas).toBool();
 591         vector<QRectF> high_rects;
 592         float rising_edge_x;
 593         bool rising_edge_seen = false;
 594
 595         // Paint the edges
 596         const unsigned int edge_count = edges.size() - 2;
 597         QLineF *const edge_lines = new QLineF[edge_count];
 598         line = edge_lines;
 599
 600         if (edges.front().second) {
 601                 // Beginning of trace is high
 602                 rising_edge_x = first_sample_x;
 603                 rising_edge_seen = true;
 604         }
 605
 606         for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
 607                 // Note: multiple edges occupying a single pixel are represented by an edge
 608                 // with undefined logic level. This means that only the first falling edge
 609                 // after a rising edge corresponds to said rising edge - and vice versa. If
 610                 // more edges with the same logic level follow, they denote multiple edges.
 611
 612                 const float x = pp.left() + ((*i).first / samples_per_pixel - pixels_offset);
 613                 *line++ = QLineF(x, high_offset, x, low_offset);
 614
 615                 if (fill_high_areas) {
 616                         // Any edge terminates a high area
 617                         const int width = x - rising_edge_x;
 618                         if (rising_edge_seen && (width > 0)) {
 619                                 high_rects.emplace_back(rising_edge_x, high_offset,
 620                                         width, signal_height);
 621                                 rising_edge_seen = false;
 622                         }
 623
 624                         // Only rising edges start high areas
 625                         if ((*i).second) {
 626                                 rising_edge_x = x;
 627                                 rising_edge_seen = true;
 628                         }
 629                 }
 630
 631                 if (show_sampling_points)
 632                         while (sampling_point_sample < (*i).first) {
 633                                 const float y = (*i).second ? low_offset : high_offset;
 634                                 sampling_points.emplace_back(
 635                                         QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
 636                                 sampling_point_sample++;
 637                                 sampling_point_x += pixels_per_sample;
 638                         };
 639         }
 640
 641         // Calculate the sample points from the last edge to the end of the trace
 642         if (show_sampling_points)
 643                 while ((uint64_t)sampling_point_sample <= end_sample) {
 644                         // Signal changed after the last edge, so the level is inverted
 645                         const float y = (edges.cend() - 1)->second ? high_offset : low_offset;
 646                         sampling_points.emplace_back(
 647                                 QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
 648                         sampling_point_sample++;
 649                         sampling_point_x += pixels_per_sample;
 650                 };
 651
 652         if (fill_high_areas) {
 653                 // Add last high rectangle if the signal is still high at the end of the trace
 654                 if (rising_edge_seen && (edges.cend() - 1)->second)
 655                         high_rects.emplace_back(rising_edge_x, high_offset,
 656                                 last_sample_x - rising_edge_x, signal_height);
 657
 658                 const QColor fill_color = QColor::fromRgba(settings.value(
 659                         GlobalSettings::Key_View_FillSignalHighAreaColor).value<uint32_t>());
 660                 p.setPen(fill_color);
 661                 p.setBrush(fill_color);
 662                 p.drawRects((const QRectF*)(high_rects.data()), high_rects.size());
 663         }
 664
 665         p.setPen(LogicSignal::EdgeColor);
 666         p.drawLines(edge_lines, edge_count);
 667         delete[] edge_lines;
 668
 669         // Paint the caps
 670         const unsigned int max_cap_line_count = edges.size();
 671         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 672
 673         p.setPen(LogicSignal::HighColor);
 674         paint_logic_caps(p, cap_lines, edges, true, samples_per_pixel,
 675                 pixels_offset, pp.left(), high_offset);
 676         p.setPen(LogicSignal::LowColor);
 677         paint_logic_caps(p, cap_lines, edges, false, samples_per_pixel,
 678                 pixels_offset, pp.left(), low_offset);
 679
 680         delete[] cap_lines;
 681
 682         // Paint the sampling points
 683         if (show_sampling_points) {
 684                 p.setPen(SamplingPointColor);
 685                 p.drawRects(sampling_points.data(), sampling_points.size());
 686         }
 687 }
 688
 689 void AnalogSignal::paint_logic_caps(QPainter &p, QLineF *const lines,
 690         vector< pair<int64_t, bool> > &edges, bool level,
 691         double samples_per_pixel, double pixels_offset, float x_offset,
 692         float y_offset)
 693 {
 694         QLineF *line = lines;
 695
 696         for (auto i = edges.begin(); i != (edges.end() - 1); i++)
 697                 if ((*i).second == level) {
 698                         *line++ = QLineF(
 699                                 ((*i).first / samples_per_pixel -
 700                                         pixels_offset) + x_offset, y_offset,
 701                                 ((*(i+1)).first / samples_per_pixel -
 702                                         pixels_offset) + x_offset, y_offset);
 703                 }
 704
 705         p.drawLines(lines, line - lines);
 706 }
 707
 708 shared_ptr<pv::data::AnalogSegment> AnalogSignal::get_analog_segment_to_paint() const
 709 {
 710         shared_ptr<pv::data::AnalogSegment> segment;
 711
 712         const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
 713                 base_->analog_data()->analog_segments();
 714
 715         if (!segments.empty()) {
 716                 if (segment_display_mode_ == ShowLastSegmentOnly)
 717                         segment = segments.back();
 718
 719                 if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
 720                                 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
 721                         try {
 722                                 segment = segments.at(current_segment_);
 723                         } catch (out_of_range&) {
 724                                 qDebug() << "Current analog segment out of range for signal" << base_->name() << ":" << current_segment_;
 725                         }
 726                 }
 727         }
 728
 729         return segment;
 730 }
 731
 732 shared_ptr<pv::data::LogicSegment> AnalogSignal::get_logic_segment_to_paint() const
 733 {
 734         shared_ptr<pv::data::LogicSegment> segment;
 735
 736         const deque< shared_ptr<pv::data::LogicSegment> > &segments =
 737                 base_->logic_data()->logic_segments();
 738
 739         if (!segments.empty()) {
 740                 if (segment_display_mode_ == ShowLastSegmentOnly)
 741                         segment = segments.back();
 742
 743                 if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
 744                                 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
 745                         try {
 746                                 segment = segments.at(current_segment_);
 747                         } catch (out_of_range&) {
 748                                 qDebug() << "Current logic segment out of range for signal" << base_->name() << ":" << current_segment_;
 749                         }
 750                 }
 751         }
 752
 753         return segment;
 754 }
 755
 756 float AnalogSignal::get_resolution(int scale_index)
 757 {
 758         const float seq[] = {1.0f, 2.0f, 5.0f};
 759
 760         const int offset = numeric_limits<int>::max() / (2 * countof(seq));
 761         const div_t d = div((int)(scale_index + countof(seq) * offset),
 762                 countof(seq));
 763
 764         return powf(10.0f, d.quot - offset) * seq[d.rem];
 765 }
 766
 767 void AnalogSignal::update_scale()
 768 {
 769         resolution_ = get_resolution(scale_index_);
 770         scale_ = div_height_ / resolution_;
 771 }
 772
 773 void AnalogSignal::update_conversion_widgets()
 774 {
 775         SignalBase::ConversionType conv_type = base_->get_conversion_type();
 776
 777         // Enable or disable widgets depending on conversion state
 778         conv_threshold_cb_->setEnabled(conv_type != SignalBase::NoConversion);
 779         display_type_cb_->setEnabled(conv_type != SignalBase::NoConversion);
 780
 781         conv_threshold_cb_->clear();
 782
 783         vector < pair<QString, int> > presets = base_->get_conversion_presets();
 784
 785         // Prevent the combo box from firing the "edit text changed" signal
 786         // as that would involuntarily select the first entry
 787         conv_threshold_cb_->blockSignals(true);
 788
 789         // Set available options depending on chosen conversion
 790         for (pair<QString, int> preset : presets)
 791                 conv_threshold_cb_->addItem(preset.first, preset.second);
 792
 793         map < QString, QVariant > options = base_->get_conversion_options();
 794
 795         if (conv_type == SignalBase::A2LConversionByThreshold) {
 796                 const vector<double> thresholds = base_->get_conversion_thresholds(
 797                                 SignalBase::A2LConversionByThreshold, true);
 798                 conv_threshold_cb_->addItem(
 799                                 QString("%1V").arg(QString::number(thresholds[0], 'f', 1)), -1);
 800         }
 801
 802         if (conv_type == SignalBase::A2LConversionBySchmittTrigger) {
 803                 const vector<double> thresholds = base_->get_conversion_thresholds(
 804                                 SignalBase::A2LConversionBySchmittTrigger, true);
 805                 conv_threshold_cb_->addItem(QString("%1V/%2V").arg(
 806                                 QString::number(thresholds[0], 'f', 1),
 807                                 QString::number(thresholds[1], 'f', 1)), -1);
 808         }
 809
 810         int preset_id = base_->get_current_conversion_preset();
 811         conv_threshold_cb_->setCurrentIndex(
 812                         conv_threshold_cb_->findData(preset_id));
 813
 814         conv_threshold_cb_->blockSignals(false);
 815 }
 816
 817 vector<data::LogicSegment::EdgePair> AnalogSignal::get_nearest_level_changes(uint64_t sample_pos)
 818 {
 819         assert(base_);
 820         assert(owner_);
 821
 822         // Return if there's no logic data or we're showing only the analog trace
 823         if (!base_->logic_data() || (display_type_ == DisplayAnalog))
 824                 return vector<data::LogicSegment::EdgePair>();
 825
 826         if (sample_pos == 0)
 827                 return vector<LogicSegment::EdgePair>();
 828
 829         shared_ptr<LogicSegment> segment = get_logic_segment_to_paint();
 830         if (!segment || (segment->get_sample_count() == 0))
 831                 return vector<LogicSegment::EdgePair>();
 832
 833         const View *view = owner_->view();
 834         assert(view);
 835         const double samples_per_pixel = base_->get_samplerate() * view->scale();
 836
 837         vector<LogicSegment::EdgePair> edges;
 838
 839         segment->get_surrounding_edges(edges, sample_pos,
 840                 samples_per_pixel / LogicSignal::Oversampling, 0);
 841
 842         if (edges.empty())
 843                 return vector<LogicSegment::EdgePair>();
 844
 845         return edges;
 846 }
 847
 848 void AnalogSignal::perform_autoranging(bool keep_divs, bool force_update)
 849 {
 850         const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
 851                 base_->analog_data()->analog_segments();
 852
 853         if (segments.empty())
 854                 return;
 855
 856         static double prev_min = 0, prev_max = 0;
 857         double min = 0, max = 0;
 858
 859         for (shared_ptr<pv::data::AnalogSegment> segment : segments) {
 860                 pair<double, double> mm = segment->get_min_max();
 861                 min = std::min(min, mm.first);
 862                 max = std::max(max, mm.second);
 863         }
 864
 865         if ((min == prev_min) && (max == prev_max) && !force_update)
 866                 return;
 867
 868         prev_min = min;
 869         prev_max = max;
 870
 871         // If we're allowed to alter the div assignment...
 872         if (!keep_divs) {
 873                 // Use all divs for the positive range if there are no negative values
 874                 if ((min == 0) && (neg_vdivs_ > 0)) {
 875                         pos_vdivs_ += neg_vdivs_;
 876                         neg_vdivs_ = 0;
 877                 }
 878
 879                 // Split up the divs if there are negative values but no negative divs
 880                 if ((min < 0) && (neg_vdivs_ == 0)) {
 881                         neg_vdivs_ = pos_vdivs_ / 2;
 882                         pos_vdivs_ -= neg_vdivs_;
 883                 }
 884         }
 885
 886         // If there is still no positive div when we need it, add one
 887         // (this can happen when pos_vdivs==neg_vdivs==0)
 888         if ((max > 0) && (pos_vdivs_ == 0)) {
 889                 pos_vdivs_ = 1;
 890                 owner_->extents_changed(false, true);
 891         }
 892
 893         // If there is still no negative div when we need it, add one
 894         // (this can happen when pos_vdivs was 0 or 1 when trying to split)
 895         if ((min < 0) && (neg_vdivs_ == 0)) {
 896                 neg_vdivs_ = 1;
 897                 owner_->extents_changed(false, true);
 898         }
 899
 900         double min_value_per_div;
 901         if ((pos_vdivs_ > 0) && (neg_vdivs_ >  0))
 902                 min_value_per_div = std::max(max / pos_vdivs_, -min / neg_vdivs_);
 903         else if (pos_vdivs_ > 0)
 904                 min_value_per_div = max / pos_vdivs_;
 905         else
 906                 min_value_per_div = -min / neg_vdivs_;
 907
 908         // Find first scale value that is bigger than the value we need
 909         for (int i = MinScaleIndex; i < MaxScaleIndex; i++)
 910                 if (get_resolution(i) > min_value_per_div) {
 911                         scale_index_ = i;
 912                         break;
 913                 }
 914
 915         update_scale();
 916 }
 917
 918 void AnalogSignal::reset_pixel_values()
 919 {
 920         value_at_pixel_pos_.clear();
 921         current_pixel_pos_ = -1;
 922         prev_value_at_pixel_ = std::numeric_limits<float>::quiet_NaN();
 923 }
 924
 925 void AnalogSignal::process_next_sample_value(float x, float value)
 926 {
 927         // Note: NAN is used to indicate the non-existance of a value at this pixel
 928
 929         if (std::isnan(prev_value_at_pixel_)) {
 930                 if (x < 0) {
 931                         min_value_at_pixel_ = value;
 932                         max_value_at_pixel_ = value;
 933                         prev_value_at_pixel_ = value;
 934                         current_pixel_pos_ = x;
 935                 } else
 936                         prev_value_at_pixel_ = std::numeric_limits<float>::quiet_NaN();
 937         }
 938
 939         const int pixel_pos = (int)(x + 0.5);
 940
 941         if (pixel_pos > current_pixel_pos_) {
 942                 if (pixel_pos - current_pixel_pos_ == 1) {
 943                         if (std::isnan(prev_value_at_pixel_)) {
 944                                 value_at_pixel_pos_.push_back(prev_value_at_pixel_);
 945                         } else {
 946                                 // Average the min/max range to create one value for the previous pixel
 947                                 const float avg = (min_value_at_pixel_ + max_value_at_pixel_) / 2;
 948                                 value_at_pixel_pos_.push_back(avg);
 949                         }
 950                 } else {
 951                         // Interpolate values to create values for the intermediate pixels
 952                         const float start_value = prev_value_at_pixel_;
 953                         const float end_value = value;
 954                         const int steps = fabs(pixel_pos - current_pixel_pos_);
 955                         const double gradient = (end_value - start_value) / steps;
 956                         for (int i = 0; i < steps; i++) {
 957                                 if (current_pixel_pos_ + i < 0)
 958                                         continue;
 959                                 value_at_pixel_pos_.push_back(start_value + i * gradient);
 960                         }
 961                 }
 962
 963                 min_value_at_pixel_ = value;
 964                 max_value_at_pixel_ = value;
 965                 prev_value_at_pixel_ = value;
 966                 current_pixel_pos_ = pixel_pos;
 967         } else {
 968                 // Another sample for the same pixel
 969                 if (value < min_value_at_pixel_)
 970                         min_value_at_pixel_ = value;
 971                 if (value > max_value_at_pixel_)
 972                         max_value_at_pixel_ = value;
 973         }
 974 }
 975
 976 void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
 977 {
 978         // Add the standard options
 979         Signal::populate_popup_form(parent, form);
 980
 981         QFormLayout *const layout = new QFormLayout;
 982
 983         // Add div-related settings
 984         pvdiv_sb_ = new QSpinBox(parent);
 985         pvdiv_sb_->setRange(0, MaximumVDivs);
 986         pvdiv_sb_->setValue(pos_vdivs_);
 987         connect(pvdiv_sb_, SIGNAL(valueChanged(int)),
 988                 this, SLOT(on_pos_vdivs_changed(int)));
 989         layout->addRow(tr("Number of pos vertical divs"), pvdiv_sb_);
 990
 991         nvdiv_sb_ = new QSpinBox(parent);
 992         nvdiv_sb_->setRange(0, MaximumVDivs);
 993         nvdiv_sb_->setValue(neg_vdivs_);
 994         connect(nvdiv_sb_, SIGNAL(valueChanged(int)),
 995                 this, SLOT(on_neg_vdivs_changed(int)));
 996         layout->addRow(tr("Number of neg vertical divs"), nvdiv_sb_);
 997
 998         div_height_sb_ = new QSpinBox(parent);
 999         div_height_sb_->setRange(20, 1000);
1000         div_height_sb_->setSingleStep(5);
1001         div_height_sb_->setSuffix(tr(" pixels"));
1002         div_height_sb_->setValue(div_height_);
1003         connect(div_height_sb_, SIGNAL(valueChanged(int)),
1004                 this, SLOT(on_div_height_changed(int)));
1005         layout->addRow(tr("Div height"), div_height_sb_);
1006
1007         // Add the vertical resolution
1008         resolution_cb_ = new QComboBox(parent);
1009
1010         for (int i = MinScaleIndex; i < MaxScaleIndex; i++) {
1011                 const QString label = QString("%1").arg(get_resolution(i));
1012                 resolution_cb_->insertItem(0, label, QVariant(i));
1013         }
1014
1015         int cur_idx = resolution_cb_->findData(QVariant(scale_index_));
1016         resolution_cb_->setCurrentIndex(cur_idx);
1017
1018         connect(resolution_cb_, SIGNAL(currentIndexChanged(int)),
1019                 this, SLOT(on_resolution_changed(int)));
1020
1021         QGridLayout *const vdiv_layout = new QGridLayout;
1022         QLabel *const vdiv_unit = new QLabel(tr("V/div"));
1023         vdiv_layout->addWidget(resolution_cb_, 0, 0);
1024         vdiv_layout->addWidget(vdiv_unit, 0, 1);
1025
1026         layout->addRow(tr("Vertical resolution"), vdiv_layout);
1027
1028         // Add the autoranging checkbox
1029         QCheckBox* autoranging_cb = new QCheckBox();
1030         autoranging_cb->setCheckState(autoranging_ ? Qt::Checked : Qt::Unchecked);
1031
1032         connect(autoranging_cb, SIGNAL(stateChanged(int)),
1033                 this, SLOT(on_autoranging_changed(int)));
1034
1035         layout->addRow(tr("Autoranging"), autoranging_cb);
1036
1037         // Add the conversion type dropdown
1038         conversion_cb_ = new QComboBox();
1039
1040         conversion_cb_->addItem(tr("none"),
1041                 SignalBase::NoConversion);
1042         conversion_cb_->addItem(tr("to logic via threshold"),
1043                 SignalBase::A2LConversionByThreshold);
1044         conversion_cb_->addItem(tr("to logic via schmitt-trigger"),
1045                 SignalBase::A2LConversionBySchmittTrigger);
1046
1047         cur_idx = conversion_cb_->findData(QVariant(base_->get_conversion_type()));
1048         conversion_cb_->setCurrentIndex(cur_idx);
1049
1050         layout->addRow(tr("Conversion"), conversion_cb_);
1051
1052         connect(conversion_cb_, SIGNAL(currentIndexChanged(int)),
1053                 this, SLOT(on_conversion_changed(int)));
1054
1055     // Add the conversion threshold settings
1056     conv_threshold_cb_ = new QComboBox();
1057     conv_threshold_cb_->setEditable(true);
1058
1059     layout->addRow(tr("Conversion threshold(s)"), conv_threshold_cb_);
1060
1061     connect(conv_threshold_cb_, SIGNAL(currentIndexChanged(int)),
1062             this, SLOT(on_conv_threshold_changed(int)));
1063     connect(conv_threshold_cb_, SIGNAL(editTextChanged(const QString&)),
1064             this, SLOT(on_conv_threshold_changed()));  // index will be -1
1065
1066         // Add the display type dropdown
1067         display_type_cb_ = new QComboBox();
1068
1069         display_type_cb_->addItem(tr("analog"), DisplayAnalog);
1070         display_type_cb_->addItem(tr("converted"), DisplayConverted);
1071         display_type_cb_->addItem(tr("analog+converted"), DisplayBoth);
1072
1073         cur_idx = display_type_cb_->findData(QVariant(display_type_));
1074         display_type_cb_->setCurrentIndex(cur_idx);
1075
1076         layout->addRow(tr("Show traces for"), display_type_cb_);
1077
1078         connect(display_type_cb_, SIGNAL(currentIndexChanged(int)),
1079                 this, SLOT(on_display_type_changed(int)));
1080
1081         // Update the conversion widget contents and states
1082         update_conversion_widgets();
1083
1084         form->addRow(layout);
1085 }
1086
1087 void AnalogSignal::hover_point_changed(const QPoint &hp)
1088 {
1089         Signal::hover_point_changed(hp);
1090
1091         // Note: Even though the view area begins at 0, we exclude 0 because
1092         // that's also the value given when the cursor is over the header to the
1093         // left of the trace paint area
1094         if (hp.x() <= 0) {
1095                 value_at_hover_pos_ = std::numeric_limits<float>::quiet_NaN();
1096         } else {
1097                 try {
1098                         value_at_hover_pos_ = value_at_pixel_pos_.at(hp.x());
1099                 } catch (out_of_range&) {
1100                         value_at_hover_pos_ = std::numeric_limits<float>::quiet_NaN();
1101                 }
1102         }
1103 }
1104
1105 void AnalogSignal::on_min_max_changed(float min, float max)
1106 {
1107         (void)min;
1108         (void)max;
1109
1110         if (autoranging_)
1111                 perform_autoranging(false, false);
1112 }
1113
1114 void AnalogSignal::on_pos_vdivs_changed(int vdivs)
1115 {
1116         if (vdivs == pos_vdivs_)
1117                 return;
1118
1119         pos_vdivs_ = vdivs;
1120
1121         // There has to be at least one div, positive or negative
1122         if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
1123                 pos_vdivs_ = 1;
1124                 if (pvdiv_sb_)
1125                         pvdiv_sb_->setValue(pos_vdivs_);
1126         }
1127
1128         if (autoranging_) {
1129                 perform_autoranging(true, true);
1130
1131                 // It could be that a positive or negative div was added, so update
1132                 if (pvdiv_sb_) {
1133                         pvdiv_sb_->setValue(pos_vdivs_);
1134                         nvdiv_sb_->setValue(neg_vdivs_);
1135                 }
1136         }
1137
1138         if (owner_) {
1139                 // Call order is important, otherwise the lazy event handler won't work
1140                 owner_->extents_changed(false, true);
1141                 owner_->row_item_appearance_changed(false, true);
1142         }
1143 }
1144
1145 void AnalogSignal::on_neg_vdivs_changed(int vdivs)
1146 {
1147         if (vdivs == neg_vdivs_)
1148                 return;
1149
1150         neg_vdivs_ = vdivs;
1151
1152         // There has to be at least one div, positive or negative
1153         if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
1154                 pos_vdivs_ = 1;
1155                 if (pvdiv_sb_)
1156                         pvdiv_sb_->setValue(pos_vdivs_);
1157         }
1158
1159         if (autoranging_) {
1160                 perform_autoranging(true, true);
1161
1162                 // It could be that a positive or negative div was added, so update
1163                 if (pvdiv_sb_) {
1164                         pvdiv_sb_->setValue(pos_vdivs_);
1165                         nvdiv_sb_->setValue(neg_vdivs_);
1166                 }
1167         }
1168
1169         if (owner_) {
1170                 // Call order is important, otherwise the lazy event handler won't work
1171                 owner_->extents_changed(false, true);
1172                 owner_->row_item_appearance_changed(false, true);
1173         }
1174 }
1175
1176 void AnalogSignal::on_div_height_changed(int height)
1177 {
1178         div_height_ = height;
1179         update_scale();
1180
1181         if (owner_) {
1182                 // Call order is important, otherwise the lazy event handler won't work
1183                 owner_->extents_changed(false, true);
1184                 owner_->row_item_appearance_changed(false, true);
1185         }
1186 }
1187
1188 void AnalogSignal::on_resolution_changed(int index)
1189 {
1190         scale_index_ = resolution_cb_->itemData(index).toInt();
1191         update_scale();
1192
1193         if (owner_)
1194                 owner_->row_item_appearance_changed(false, true);
1195 }
1196
1197 void AnalogSignal::on_autoranging_changed(int state)
1198 {
1199         autoranging_ = (state == Qt::Checked);
1200
1201         if (autoranging_)
1202                 perform_autoranging(false, true);
1203
1204         if (owner_) {
1205                 // Call order is important, otherwise the lazy event handler won't work
1206                 owner_->extents_changed(false, true);
1207                 owner_->row_item_appearance_changed(false, true);
1208         }
1209 }
1210
1211 void AnalogSignal::on_conversion_changed(int index)
1212 {
1213         SignalBase::ConversionType old_conv_type = base_->get_conversion_type();
1214
1215         SignalBase::ConversionType conv_type =
1216                 (SignalBase::ConversionType)(conversion_cb_->itemData(index).toInt());
1217
1218         if (conv_type != old_conv_type) {
1219                 base_->set_conversion_type(conv_type);
1220                 update_conversion_widgets();
1221
1222                 if (owner_)
1223                         owner_->row_item_appearance_changed(false, true);
1224         }
1225 }
1226
1227 void AnalogSignal::on_conv_threshold_changed(int index)
1228 {
1229         SignalBase::ConversionType conv_type = base_->get_conversion_type();
1230
1231         // Note: index is set to -1 if the text in the combo box matches none of
1232         // the entries in the combo box
1233
1234         if ((index == -1) && (conv_threshold_cb_->currentText().length() == 0))
1235                 return;
1236
1237         // The combo box entry with the custom value has user_data set to -1
1238         const int user_data = conv_threshold_cb_->findText(
1239                         conv_threshold_cb_->currentText());
1240
1241         const bool use_custom_thr = (index == -1) || (user_data == -1);
1242
1243         if (conv_type == SignalBase::A2LConversionByThreshold && use_custom_thr) {
1244                 // Not one of the preset values, try to parse the combo box text
1245                 // Note: Regex loosely based on
1246                 // https://txt2re.com/index-c++.php3?s=0.1V&1&-13
1247                 QString re1 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1248                 QString re2 = "([a-zA-Z]*)"; // SI unit
1249                 QRegExp regex(re1 + re2);
1250
1251                 const QString text = conv_threshold_cb_->currentText();
1252                 if (!regex.exactMatch(text))
1253                         return;  // String doesn't match the regex
1254
1255                 QStringList tokens = regex.capturedTexts();
1256
1257                 // For now, we simply assume that the unit is volt without modifiers
1258                 const double thr = tokens.at(1).toDouble();
1259
1260                 // Only restart the conversion if the threshold was updated.
1261                 // We're starting a delayed conversion because the user may still be
1262                 // typing and the UI would lag if we kept on restarting it immediately
1263                 if (base_->set_conversion_option("threshold_value", thr))
1264                         base_->start_conversion(true);
1265         }
1266
1267         if (conv_type == SignalBase::A2LConversionBySchmittTrigger && use_custom_thr) {
1268                 // Not one of the preset values, try to parse the combo box text
1269                 // Note: Regex loosely based on
1270                 // https://txt2re.com/index-c++.php3?s=0.1V/0.2V&2&14&-22&3&15
1271                 QString re1 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1272                 QString re2 = "([a-zA-Z]*)"; // SI unit
1273                 QString re3 = "\\/"; // Forward slash, not captured
1274                 QString re4 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1275                 QString re5 = "([a-zA-Z]*)"; // SI unit
1276                 QRegExp regex(re1 + re2 + re3 + re4 + re5);
1277
1278                 const QString text = conv_threshold_cb_->currentText();
1279                 if (!regex.exactMatch(text))
1280                         return;  // String doesn't match the regex
1281
1282                 QStringList tokens = regex.capturedTexts();
1283
1284                 // For now, we simply assume that the unit is volt without modifiers
1285                 const double low_thr = tokens.at(1).toDouble();
1286                 const double high_thr = tokens.at(3).toDouble();
1287
1288                 // Only restart the conversion if one of the options was updated.
1289                 // We're starting a delayed conversion because the user may still be
1290                 // typing and the UI would lag if we kept on restarting it immediately
1291                 bool o1 = base_->set_conversion_option("threshold_value_low", low_thr);
1292                 bool o2 = base_->set_conversion_option("threshold_value_high", high_thr);
1293                 if (o1 || o2)
1294                         base_->start_conversion(true);  // Start delayed conversion
1295         }
1296
1297         base_->set_conversion_preset((SignalBase::ConversionPreset)index);
1298
1299         // Immediately start the conversion if we're not using custom values
1300         // (i.e. we're using one of the presets)
1301         if (!use_custom_thr)
1302                 base_->start_conversion();
1303 }
1304
1305 void AnalogSignal::on_delayed_conversion_starter()
1306 {
1307         base_->start_conversion();
1308 }
1309
1310 void AnalogSignal::on_display_type_changed(int index)
1311 {
1312         display_type_ = (DisplayType)(display_type_cb_->itemData(index).toInt());
1313
1314         if (owner_)
1315                 owner_->row_item_appearance_changed(false, true);
1316 }
1317
1318 void AnalogSignal::on_settingViewConversionThresholdDispMode_changed(const QVariant new_value)
1319 {
1320         conversion_threshold_disp_mode_ = new_value.toInt();
1321
1322         if (owner_)
1323                 owner_->row_item_appearance_changed(false, true);
1324 }
1325
1326 } // namespace trace
1327 } // namespace views
1328 } // namespace pv