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;  // 0.01 units/div
  99 const int AnalogSignal::MaxScaleIndex = 10;  // 1000 units/div
 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         value_at_hover_pos_(std::numeric_limits<float>::quiet_NaN()),
 109         scale_index_(4), // 20 per div
 110         pos_vdivs_(1),
 111         neg_vdivs_(1),
 112         resolution_(0),
 113         display_type_(DisplayBoth),
 114         autoranging_(true)
 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 settings;
 125         show_sampling_points_ =
 126                 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();
 127         fill_high_areas_ =
 128                 settings.value(GlobalSettings::Key_View_FillSignalHighAreas).toBool();
 129         high_fill_color_ = QColor::fromRgba(settings.value(
 130                 GlobalSettings::Key_View_FillSignalHighAreaColor).value<uint32_t>());
 131         show_analog_minor_grid_ =
 132                 settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool();
 133         conversion_threshold_disp_mode_ =
 134                 settings.value(GlobalSettings::Key_View_ConversionThresholdDispMode).toInt();
 135         div_height_ = settings.value(GlobalSettings::Key_View_DefaultDivHeight).toInt();
 136
 137         base_->set_color(SignalColors[base_->index() % countof(SignalColors)]);
 138         update_scale();
 139 }
 140
 141 shared_ptr<pv::data::SignalData> AnalogSignal::data() const
 142 {
 143         return base_->analog_data();
 144 }
 145
 146 std::map<QString, QVariant> AnalogSignal::save_settings() const
 147 {
 148         std::map<QString, QVariant> result;
 149
 150         result["pos_vdivs"] = pos_vdivs_;
 151         result["neg_vdivs"] = neg_vdivs_;
 152         result["scale_index"] = scale_index_;
 153         result["display_type"] = display_type_;
 154         result["autoranging"] = pos_vdivs_;
 155         result["div_height"] = div_height_;
 156
 157         return result;
 158 }
 159
 160 void AnalogSignal::restore_settings(std::map<QString, QVariant> settings)
 161 {
 162         auto entry = settings.find("pos_vdivs");
 163         if (entry != settings.end())
 164                 pos_vdivs_ = settings["pos_vdivs"].toInt();
 165
 166         entry = settings.find("neg_vdivs");
 167         if (entry != settings.end())
 168                 neg_vdivs_ = settings["neg_vdivs"].toInt();
 169
 170         entry = settings.find("scale_index");
 171         if (entry != settings.end()) {
 172                 scale_index_ = settings["scale_index"].toInt();
 173                 update_scale();
 174         }
 175
 176         entry = settings.find("display_type");
 177         if (entry != settings.end())
 178                 display_type_ = (DisplayType)(settings["display_type"].toInt());
 179
 180         entry = settings.find("autoranging");
 181         if (entry != settings.end())
 182                 autoranging_ = settings["autoranging"].toBool();
 183
 184         entry = settings.find("div_height");
 185         if (entry != settings.end()) {
 186                 const int old_height = div_height_;
 187                 div_height_ = settings["div_height"].toInt();
 188
 189                 if ((div_height_ != old_height) && owner_) {
 190                         // Call order is important, otherwise the lazy event handler won't work
 191                         owner_->extents_changed(false, true);
 192                         owner_->row_item_appearance_changed(false, true);
 193                 }
 194         }
 195 }
 196
 197 pair<int, int> AnalogSignal::v_extents() const
 198 {
 199         const int ph = pos_vdivs_ * div_height_;
 200         const int nh = neg_vdivs_ * div_height_;
 201         return make_pair(-ph, nh);
 202 }
 203
 204 void AnalogSignal::paint_back(QPainter &p, ViewItemPaintParams &pp)
 205 {
 206         if (!base_->enabled())
 207                 return;
 208
 209         bool paint_thr_bg =
 210                 conversion_threshold_disp_mode_ == GlobalSettings::ConvThrDispMode_Background;
 211
 212         const vector<double> thresholds = base_->get_conversion_thresholds();
 213
 214         // Only display thresholds if we have some and we show analog samples
 215         if ((thresholds.size() > 0) && paint_thr_bg &&
 216                 ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth))) {
 217
 218                 const int visual_y = get_visual_y();
 219                 const pair<int, int> extents = v_extents();
 220                 const int top = visual_y + extents.first;
 221                 const int btm = visual_y + extents.second;
 222
 223                 // Draw high/neutral/low areas
 224                 if (thresholds.size() == 2) {
 225                         int thr_lo = visual_y - thresholds[0] * scale_;
 226                         int thr_hi = visual_y - thresholds[1] * scale_;
 227                         thr_lo = min(max(thr_lo, top), btm);
 228                         thr_hi = min(max(thr_hi, top), btm);
 229
 230                         p.fillRect(QRectF(pp.left(), top, pp.width(), thr_hi - top),
 231                                 QBrush(ThresholdColorHi));
 232                         p.fillRect(QRectF(pp.left(), thr_hi, pp.width(), thr_lo - thr_hi),
 233                                 QBrush(ThresholdColorNe));
 234                         p.fillRect(QRectF(pp.left(), thr_lo, pp.width(), btm - thr_lo),
 235                                 QBrush(ThresholdColorLo));
 236                 } else {
 237                         int thr = visual_y - thresholds[0] * scale_;
 238                         thr = min(max(thr, top), btm);
 239
 240                         p.fillRect(QRectF(pp.left(), top, pp.width(), thr - top),
 241                                 QBrush(ThresholdColorHi));
 242                         p.fillRect(QRectF(pp.left(), thr, pp.width(), btm - thr),
 243                                 QBrush(ThresholdColorLo));
 244                 }
 245
 246                 paint_axis(p, pp, get_visual_y());
 247         } else {
 248                 Signal::paint_back(p, pp);
 249                 paint_axis(p, pp, get_visual_y());
 250         }
 251 }
 252
 253 void AnalogSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
 254 {
 255         assert(base_->analog_data());
 256         assert(owner_);
 257
 258         const int y = get_visual_y();
 259
 260         if (!base_->enabled())
 261                 return;
 262
 263         if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
 264                 paint_grid(p, y, pp.left(), pp.right());
 265
 266                 shared_ptr<pv::data::AnalogSegment> segment = get_analog_segment_to_paint();
 267                 if (!segment || (segment->get_sample_count() == 0))
 268                         return;
 269
 270                 const double pixels_offset = pp.pixels_offset();
 271                 const double samplerate = max(1.0, segment->samplerate());
 272                 const pv::util::Timestamp& start_time = segment->start_time();
 273                 const int64_t last_sample = (int64_t)segment->get_sample_count() - 1;
 274                 const double samples_per_pixel = samplerate * pp.scale();
 275                 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
 276                 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
 277
 278                 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
 279                         (int64_t)0), last_sample);
 280                 const int64_t end_sample = min(max((ceil(end) + 1).convert_to<int64_t>(),
 281                         (int64_t)0), last_sample);
 282
 283                 if (samples_per_pixel < EnvelopeThreshold)
 284                         paint_trace(p, segment, y, pp.left(), start_sample, end_sample,
 285                                 pixels_offset, samples_per_pixel);
 286                 else
 287                         paint_envelope(p, segment, y, pp.left(), start_sample, end_sample,
 288                                 pixels_offset, samples_per_pixel);
 289         }
 290
 291         if ((display_type_ == DisplayConverted) || (display_type_ == DisplayBoth))
 292                 paint_logic_mid(p, pp);
 293 }
 294
 295 void AnalogSignal::paint_fore(QPainter &p, ViewItemPaintParams &pp)
 296 {
 297         if (!enabled())
 298                 return;
 299
 300         if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
 301                 const int y = get_visual_y();
 302
 303                 QString infotext;
 304
 305                 // Show the info section on the right side of the trace, including
 306                 // the value at the hover point when the hover marker is enabled
 307                 // and we have corresponding data available
 308                 if (show_hover_marker_ && !std::isnan(value_at_hover_pos_)) {
 309                         infotext = QString("[%1] %2 V/div")
 310                                 .arg(format_value_si(value_at_hover_pos_, SIPrefix::unspecified, 2, "V", false))
 311                                 .arg(resolution_);
 312                 } else
 313                         infotext = QString("%1 V/div").arg(resolution_);
 314
 315                 p.setPen(base_->color());
 316                 p.setFont(QApplication::font());
 317
 318                 const QRectF bounding_rect = QRectF(pp.left(),
 319                                 y + v_extents().first,
 320                                 pp.width() - InfoTextMarginRight,
 321                                 v_extents().second - v_extents().first - InfoTextMarginBottom);
 322
 323                 p.drawText(bounding_rect, Qt::AlignRight | Qt::AlignBottom, infotext);
 324         }
 325
 326         if (show_hover_marker_)
 327                 paint_hover_marker(p);
 328 }
 329
 330 void AnalogSignal::paint_grid(QPainter &p, int y, int left, int right)
 331 {
 332         bool was_antialiased = p.testRenderHint(QPainter::Antialiasing);
 333         p.setRenderHint(QPainter::Antialiasing, false);
 334
 335         if (pos_vdivs_ > 0) {
 336                 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
 337                 for (int i = 1; i <= pos_vdivs_; i++) {
 338                         const float dy = i * div_height_;
 339                         p.drawLine(QLineF(left, y - dy, right, y - dy));
 340                 }
 341         }
 342
 343         if ((pos_vdivs_ > 0) && show_analog_minor_grid_) {
 344                 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
 345                 for (int i = 0; i < pos_vdivs_; i++) {
 346                         const float dy = i * div_height_;
 347                         const float dy25 = dy + (0.25 * div_height_);
 348                         const float dy50 = dy + (0.50 * div_height_);
 349                         const float dy75 = dy + (0.75 * div_height_);
 350                         p.drawLine(QLineF(left, y - dy25, right, y - dy25));
 351                         p.drawLine(QLineF(left, y - dy50, right, y - dy50));
 352                         p.drawLine(QLineF(left, y - dy75, right, y - dy75));
 353                 }
 354         }
 355
 356         if (neg_vdivs_ > 0) {
 357                 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
 358                 for (int i = 1; i <= neg_vdivs_; i++) {
 359                         const float dy = i * div_height_;
 360                         p.drawLine(QLineF(left, y + dy, right, y + dy));
 361                 }
 362         }
 363
 364         if ((pos_vdivs_ > 0) && show_analog_minor_grid_) {
 365                 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
 366                 for (int i = 0; i < neg_vdivs_; i++) {
 367                         const float dy = i * div_height_;
 368                         const float dy25 = dy + (0.25 * div_height_);
 369                         const float dy50 = dy + (0.50 * div_height_);
 370                         const float dy75 = dy + (0.75 * div_height_);
 371                         p.drawLine(QLineF(left, y + dy25, right, y + dy25));
 372                         p.drawLine(QLineF(left, y + dy50, right, y + dy50));
 373                         p.drawLine(QLineF(left, y + dy75, right, y + dy75));
 374                 }
 375         }
 376
 377         p.setRenderHint(QPainter::Antialiasing, was_antialiased);
 378 }
 379
 380 void AnalogSignal::paint_trace(QPainter &p,
 381         const shared_ptr<pv::data::AnalogSegment> &segment,
 382         int y, int left, const int64_t start, const int64_t end,
 383         const double pixels_offset, const double samples_per_pixel)
 384 {
 385         if (end <= start)
 386                 return;
 387
 388         bool paint_thr_dots =
 389                 (base_->get_conversion_type() != data::SignalBase::NoConversion) &&
 390                 (conversion_threshold_disp_mode_ == GlobalSettings::ConvThrDispMode_Dots);
 391
 392         vector<double> thresholds;
 393         if (paint_thr_dots)
 394                 thresholds = base_->get_conversion_thresholds();
 395
 396         // Calculate and paint the sampling points if enabled and useful
 397         GlobalSettings settings;
 398         const bool show_sampling_points =
 399                 (show_sampling_points_ || paint_thr_dots) && (samples_per_pixel < 0.25);
 400
 401         p.setPen(base_->color());
 402
 403         const int64_t points_count = end - start + 1;
 404
 405         QPointF *points = new QPointF[points_count];
 406         QPointF *point = points;
 407
 408         vector<QRectF> sampling_points[3];
 409
 410         int64_t sample_count = min(points_count, TracePaintBlockSize);
 411         int64_t block_sample = 0;
 412         float *sample_block = new float[TracePaintBlockSize];
 413         segment->get_samples(start, start + sample_count, sample_block);
 414
 415         if (show_hover_marker_)
 416                 reset_pixel_values();
 417
 418         const int w = 2;
 419         for (int64_t sample = start; sample <= end; sample++, block_sample++) {
 420
 421                 // Fetch next block of samples if we finished the current one
 422                 if (block_sample == TracePaintBlockSize) {
 423                         block_sample = 0;
 424                         sample_count = min(points_count - sample, TracePaintBlockSize);
 425                         segment->get_samples(sample, sample + sample_count, sample_block);
 426                 }
 427
 428                 const float abs_x = sample / samples_per_pixel - pixels_offset;
 429                 const float x = left + abs_x;
 430
 431                 *point++ = QPointF(x, y - sample_block[block_sample] * scale_);
 432
 433                 // Generate the pixel<->value lookup table for the mouse hover
 434                 if (show_hover_marker_)
 435                         process_next_sample_value(abs_x, sample_block[block_sample]);
 436
 437                 // Create the sampling points if needed
 438                 if (show_sampling_points) {
 439                         int idx = 0;  // Neutral
 440
 441                         if (paint_thr_dots) {
 442                                 if (thresholds.size() == 1)
 443                                         idx = (sample_block[block_sample] >= thresholds[0]) ? 2 : 1;
 444                                 else if (thresholds.size() == 2) {
 445                                         if (sample_block[block_sample] > thresholds[1])
 446                                                 idx = 2;  // High
 447                                         else if (sample_block[block_sample] < thresholds[0])
 448                                                 idx = 1;  // Low
 449                                 }
 450                         }
 451
 452                         sampling_points[idx].emplace_back(x - (w / 2), y - sample_block[block_sample] * scale_ - (w / 2), w, w);
 453                 }
 454         }
 455         delete[] sample_block;
 456
 457         // QPainter::drawPolyline() is slow, let's paint the lines ourselves
 458         for (int64_t i = 1; i < points_count; i++)
 459                 p.drawLine(points[i - 1], points[i]);
 460
 461         if (show_sampling_points) {
 462                 if (paint_thr_dots) {
 463                         p.setPen(SamplingPointColorNe);
 464                         p.drawRects(sampling_points[0].data(), sampling_points[0].size());
 465                         p.setPen(SamplingPointColorLo);
 466                         p.drawRects(sampling_points[1].data(), sampling_points[1].size());
 467                         p.setPen(SamplingPointColorHi);
 468                         p.drawRects(sampling_points[2].data(), sampling_points[2].size());
 469                 } else {
 470                         p.setPen(SamplingPointColor);
 471                         p.drawRects(sampling_points[0].data(), sampling_points[0].size());
 472                 }
 473         }
 474
 475         delete[] points;
 476 }
 477
 478 void AnalogSignal::paint_envelope(QPainter &p,
 479         const shared_ptr<pv::data::AnalogSegment> &segment,
 480         int y, int left, const int64_t start, const int64_t end,
 481         const double pixels_offset, const double samples_per_pixel)
 482 {
 483         using pv::data::AnalogSegment;
 484
 485         // Note: Envelope painting currently doesn't generate a pixel<->value lookup table
 486         if (show_hover_marker_)
 487                 reset_pixel_values();
 488
 489         AnalogSegment::EnvelopeSection e;
 490         segment->get_envelope_section(e, start, end, samples_per_pixel);
 491
 492         if (e.length < 2)
 493                 return;
 494
 495         p.setPen(QPen(Qt::NoPen));
 496         p.setBrush(base_->color());
 497
 498         QRectF *const rects = new QRectF[e.length];
 499         QRectF *rect = rects;
 500
 501         for (uint64_t sample = 0; sample < e.length - 1; sample++) {
 502                 const float x = ((e.scale * sample + e.start) /
 503                         samples_per_pixel - pixels_offset) + left;
 504
 505                 const AnalogSegment::EnvelopeSample *const s = e.samples + sample;
 506
 507                 // We overlap this sample with the next so that vertical
 508                 // gaps do not appear during steep rising or falling edges
 509                 const float b = y - max(s->max, (s + 1)->min) * scale_;
 510                 const float t = y - min(s->min, (s + 1)->max) * scale_;
 511
 512                 float h = b - t;
 513                 if (h >= 0.0f && h <= 1.0f)
 514                         h = 1.0f;
 515                 if (h <= 0.0f && h >= -1.0f)
 516                         h = -1.0f;
 517
 518                 *rect++ = QRectF(x, t, 1.0f, h);
 519         }
 520
 521         p.drawRects(rects, e.length);
 522
 523         delete[] rects;
 524         delete[] e.samples;
 525 }
 526
 527 void AnalogSignal::paint_logic_mid(QPainter &p, ViewItemPaintParams &pp)
 528 {
 529         QLineF *line;
 530
 531         vector< pair<int64_t, bool> > edges;
 532
 533         assert(base_);
 534
 535         const int y = get_visual_y();
 536
 537         if (!base_->enabled() || !base_->logic_data())
 538                 return;
 539
 540         const int signal_margin =
 541                 QFontMetrics(QApplication::font()).height() / 2;
 542
 543         const int ph = min(pos_vdivs_, 1) * div_height_;
 544         const int nh = min(neg_vdivs_, 1) * div_height_;
 545         const float high_offset = y - ph + signal_margin + 0.5f;
 546         const float low_offset = y + nh - signal_margin - 0.5f;
 547         const float signal_height = low_offset - high_offset;
 548
 549         shared_ptr<pv::data::LogicSegment> segment = get_logic_segment_to_paint();
 550         if (!segment || (segment->get_sample_count() == 0))
 551                 return;
 552
 553         double samplerate = segment->samplerate();
 554
 555         // Show sample rate as 1Hz when it is unknown
 556         if (samplerate == 0.0)
 557                 samplerate = 1.0;
 558
 559         const double pixels_offset = pp.pixels_offset();
 560         const pv::util::Timestamp& start_time = segment->start_time();
 561         const int64_t last_sample = (int64_t)segment->get_sample_count() - 1;
 562         const double samples_per_pixel = samplerate * pp.scale();
 563         const double pixels_per_sample = 1 / samples_per_pixel;
 564         const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
 565         const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
 566
 567         const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
 568                 (int64_t)0), last_sample);
 569         const uint64_t end_sample = min(max(ceil(end).convert_to<int64_t>(),
 570                 (int64_t)0), last_sample);
 571
 572         segment->get_subsampled_edges(edges, start_sample, end_sample,
 573                 samples_per_pixel / LogicSignal::Oversampling, 0);
 574         assert(edges.size() >= 2);
 575
 576         const float first_sample_x =
 577                 pp.left() + (edges.front().first / samples_per_pixel - pixels_offset);
 578         const float last_sample_x =
 579                 pp.left() + (edges.back().first / samples_per_pixel - pixels_offset);
 580
 581         // Check whether we need to paint the sampling points
 582         const bool show_sampling_points = show_sampling_points_ && (samples_per_pixel < 0.25);
 583         vector<QRectF> sampling_points;
 584         float sampling_point_x = first_sample_x;
 585         int64_t sampling_point_sample = start_sample;
 586         const int w = 2;
 587
 588         if (show_sampling_points)
 589                 sampling_points.reserve(end_sample - start_sample + 1);
 590
 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                         if (rising_edge_seen) {
 618                                 const int width = x - rising_edge_x;
 619                                 if (width > 0)
 620                                         high_rects.emplace_back(rising_edge_x, high_offset,
 621                                                 width, signal_height);
 622                                 rising_edge_seen = false;
 623                         }
 624
 625                         // Only rising edges start high areas
 626                         if ((*i).second) {
 627                                 rising_edge_x = x;
 628                                 rising_edge_seen = true;
 629                         }
 630                 }
 631
 632                 if (show_sampling_points)
 633                         while (sampling_point_sample < (*i).first) {
 634                                 const float y = (*i).second ? low_offset : high_offset;
 635                                 sampling_points.emplace_back(
 636                                         QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
 637                                 sampling_point_sample++;
 638                                 sampling_point_x += pixels_per_sample;
 639                         };
 640         }
 641
 642         // Calculate the sample points from the last edge to the end of the trace
 643         if (show_sampling_points)
 644                 while ((uint64_t)sampling_point_sample <= end_sample) {
 645                         // Signal changed after the last edge, so the level is inverted
 646                         const float y = (edges.cend() - 1)->second ? high_offset : low_offset;
 647                         sampling_points.emplace_back(
 648                                 QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
 649                         sampling_point_sample++;
 650                         sampling_point_x += pixels_per_sample;
 651                 };
 652
 653         if (fill_high_areas_) {
 654                 // Add last high rectangle if the signal is still high at the end of the trace
 655                 if (rising_edge_seen && (edges.cend() - 1)->second)
 656                         high_rects.emplace_back(rising_edge_x, high_offset,
 657                                 last_sample_x - rising_edge_x, signal_height);
 658
 659                 p.setPen(high_fill_color_);
 660                 p.setBrush(high_fill_color_);
 661                 p.drawRects((const QRectF*)(high_rects.data()), high_rects.size());
 662         }
 663
 664         p.setPen(LogicSignal::EdgeColor);
 665         p.drawLines(edge_lines, edge_count);
 666         delete[] edge_lines;
 667
 668         // Paint the caps
 669         const unsigned int max_cap_line_count = edges.size();
 670         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 671
 672         p.setPen(LogicSignal::HighColor);
 673         paint_logic_caps(p, cap_lines, edges, true, samples_per_pixel,
 674                 pixels_offset, pp.left(), high_offset);
 675         p.setPen(LogicSignal::LowColor);
 676         paint_logic_caps(p, cap_lines, edges, false, samples_per_pixel,
 677                 pixels_offset, pp.left(), low_offset);
 678
 679         delete[] cap_lines;
 680
 681         // Paint the sampling points
 682         if (show_sampling_points) {
 683                 p.setPen(SamplingPointColor);
 684                 p.drawRects(sampling_points.data(), sampling_points.size());
 685         }
 686 }
 687
 688 void AnalogSignal::paint_logic_caps(QPainter &p, QLineF *const lines,
 689         vector< pair<int64_t, bool> > &edges, bool level,
 690         double samples_per_pixel, double pixels_offset, float x_offset,
 691         float y_offset)
 692 {
 693         QLineF *line = lines;
 694
 695         for (auto i = edges.begin(); i != (edges.end() - 1); i++)
 696                 if ((*i).second == level) {
 697                         *line++ = QLineF(
 698                                 ((*i).first / samples_per_pixel -
 699                                         pixels_offset) + x_offset, y_offset,
 700                                 ((*(i+1)).first / samples_per_pixel -
 701                                         pixels_offset) + x_offset, y_offset);
 702                 }
 703
 704         p.drawLines(lines, line - lines);
 705 }
 706
 707 shared_ptr<pv::data::AnalogSegment> AnalogSignal::get_analog_segment_to_paint() const
 708 {
 709         shared_ptr<pv::data::AnalogSegment> segment;
 710
 711         const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
 712                 base_->analog_data()->analog_segments();
 713
 714         if (!segments.empty()) {
 715                 if (segment_display_mode_ == ShowLastSegmentOnly)
 716                         segment = segments.back();
 717
 718                 if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
 719                                 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
 720                         try {
 721                                 segment = segments.at(current_segment_);
 722                         } catch (out_of_range&) {
 723                                 qDebug() << "Current analog segment out of range for signal" << base_->name() << ":" << current_segment_;
 724                         }
 725                 }
 726         }
 727
 728         return segment;
 729 }
 730
 731 shared_ptr<pv::data::LogicSegment> AnalogSignal::get_logic_segment_to_paint() const
 732 {
 733         shared_ptr<pv::data::LogicSegment> segment;
 734
 735         const deque< shared_ptr<pv::data::LogicSegment> > &segments =
 736                 base_->logic_data()->logic_segments();
 737
 738         if (!segments.empty()) {
 739                 if (segment_display_mode_ == ShowLastSegmentOnly)
 740                         segment = segments.back();
 741
 742                 if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
 743                                 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
 744                         try {
 745                                 segment = segments.at(current_segment_);
 746                         } catch (out_of_range&) {
 747                                 qDebug() << "Current logic segment out of range for signal" << base_->name() << ":" << current_segment_;
 748                         }
 749                 }
 750         }
 751
 752         return segment;
 753 }
 754
 755 float AnalogSignal::get_resolution(int scale_index)
 756 {
 757         const float seq[] = {1.0f, 2.0f, 5.0f};
 758
 759         const int offset = numeric_limits<int>::max() / (2 * countof(seq));
 760         const div_t d = div((int)(scale_index + countof(seq) * offset),
 761                 countof(seq));
 762
 763         return powf(10.0f, d.quot - offset) * seq[d.rem];
 764 }
 765
 766 void AnalogSignal::update_scale()
 767 {
 768         resolution_ = get_resolution(scale_index_);
 769         scale_ = div_height_ / resolution_;
 770 }
 771
 772 void AnalogSignal::update_conversion_widgets()
 773 {
 774         SignalBase::ConversionType conv_type = base_->get_conversion_type();
 775
 776         // Enable or disable widgets depending on conversion state
 777         conv_threshold_cb_->setEnabled(conv_type != SignalBase::NoConversion);
 778         display_type_cb_->setEnabled(conv_type != SignalBase::NoConversion);
 779
 780         conv_threshold_cb_->clear();
 781
 782         vector < pair<QString, int> > presets = base_->get_conversion_presets();
 783
 784         // Prevent the combo box from firing the "edit text changed" signal
 785         // as that would involuntarily select the first entry
 786         conv_threshold_cb_->blockSignals(true);
 787
 788         // Set available options depending on chosen conversion
 789         for (pair<QString, int>& preset : presets)
 790                 conv_threshold_cb_->addItem(preset.first, preset.second);
 791
 792         map < QString, QVariant > options = base_->get_conversion_options();
 793
 794         if (conv_type == SignalBase::A2LConversionByThreshold) {
 795                 const vector<double> thresholds = base_->get_conversion_thresholds(
 796                                 SignalBase::A2LConversionByThreshold, true);
 797                 conv_threshold_cb_->addItem(
 798                                 QString("%1V").arg(QString::number(thresholds[0], 'f', 1)), -1);
 799         }
 800
 801         if (conv_type == SignalBase::A2LConversionBySchmittTrigger) {
 802                 const vector<double> thresholds = base_->get_conversion_thresholds(
 803                                 SignalBase::A2LConversionBySchmittTrigger, true);
 804                 conv_threshold_cb_->addItem(QString("%1V/%2V").arg(
 805                                 QString::number(thresholds[0], 'f', 1),
 806                                 QString::number(thresholds[1], 'f', 1)), -1);
 807         }
 808
 809         int preset_id = base_->get_current_conversion_preset();
 810         conv_threshold_cb_->setCurrentIndex(
 811                         conv_threshold_cb_->findData(preset_id));
 812
 813         conv_threshold_cb_->blockSignals(false);
 814 }
 815
 816 vector<data::LogicSegment::EdgePair> AnalogSignal::get_nearest_level_changes(uint64_t sample_pos)
 817 {
 818         assert(base_);
 819         assert(owner_);
 820
 821         // Return if there's no logic data or we're showing only the analog trace
 822         if (!base_->logic_data() || (display_type_ == DisplayAnalog))
 823                 return vector<data::LogicSegment::EdgePair>();
 824
 825         if (sample_pos == 0)
 826                 return vector<LogicSegment::EdgePair>();
 827
 828         shared_ptr<LogicSegment> segment = get_logic_segment_to_paint();
 829         if (!segment || (segment->get_sample_count() == 0))
 830                 return vector<LogicSegment::EdgePair>();
 831
 832         const View *view = owner_->view();
 833         assert(view);
 834         const double samples_per_pixel = base_->get_samplerate() * view->scale();
 835
 836         vector<LogicSegment::EdgePair> edges;
 837
 838         segment->get_surrounding_edges(edges, sample_pos,
 839                 samples_per_pixel / LogicSignal::Oversampling, 0);
 840
 841         if (edges.empty())
 842                 return vector<LogicSegment::EdgePair>();
 843
 844         return edges;
 845 }
 846
 847 void AnalogSignal::perform_autoranging(bool keep_divs, bool force_update)
 848 {
 849         const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
 850                 base_->analog_data()->analog_segments();
 851
 852         if (segments.empty())
 853                 return;
 854
 855         double signal_min_ = 0, signal_max_ = 0;
 856         double min = 0, max = 0;
 857
 858         for (const shared_ptr<pv::data::AnalogSegment>& segment : segments) {
 859                 pair<double, double> mm = segment->get_min_max();
 860                 min = std::min(min, mm.first);
 861                 max = std::max(max, mm.second);
 862         }
 863
 864         if ((min == signal_min_) && (max == signal_max_) && !force_update)
 865                 return;
 866
 867         signal_min_ = min;
 868         signal_max_ = max;
 869
 870         // If we're allowed to alter the div assignment...
 871         if (!keep_divs) {
 872                 // Use all divs for the positive range if there are no negative values
 873                 if ((min == 0) && (neg_vdivs_ > 0)) {
 874                         pos_vdivs_ += neg_vdivs_;
 875                         neg_vdivs_ = 0;
 876                 }
 877
 878                 // Split up the divs if there are negative values but no negative divs
 879                 if ((min < 0) && (neg_vdivs_ == 0)) {
 880                         neg_vdivs_ = pos_vdivs_ / 2;
 881                         pos_vdivs_ -= neg_vdivs_;
 882                 }
 883         }
 884
 885         // If there is still no positive div when we need it, add one
 886         // (this can happen when pos_vdivs==neg_vdivs==0)
 887         if ((max > 0) && (pos_vdivs_ == 0)) {
 888                 pos_vdivs_ = 1;
 889                 owner_->extents_changed(false, true);
 890         }
 891
 892         // If there is still no negative div when we need it, add one
 893         // (this can happen when pos_vdivs was 0 or 1 when trying to split)
 894         if ((min < 0) && (neg_vdivs_ == 0)) {
 895                 neg_vdivs_ = 1;
 896                 owner_->extents_changed(false, true);
 897         }
 898
 899         double min_value_per_div;
 900         if ((pos_vdivs_ > 0) && (neg_vdivs_ >  0))
 901                 min_value_per_div = std::max(max / pos_vdivs_, -min / neg_vdivs_);
 902         else if (pos_vdivs_ > 0)
 903                 min_value_per_div = max / pos_vdivs_;
 904         else
 905                 min_value_per_div = -min / neg_vdivs_;
 906
 907         // Find first scale value that is bigger than the value we need
 908         for (int i = MinScaleIndex; i < MaxScaleIndex; i++)
 909                 if (get_resolution(i) > min_value_per_div) {
 910                         scale_index_ = i;
 911                         break;
 912                 }
 913
 914         update_scale();
 915 }
 916
 917 void AnalogSignal::reset_pixel_values()
 918 {
 919         value_at_pixel_pos_.clear();
 920         current_pixel_pos_ = -1;
 921         prev_value_at_pixel_ = std::numeric_limits<float>::quiet_NaN();
 922 }
 923
 924 void AnalogSignal::process_next_sample_value(float x, float value)
 925 {
 926         // Note: NAN is used to indicate the non-existance of a value at this pixel
 927
 928         if (std::isnan(prev_value_at_pixel_)) {
 929                 if (x < 0) {
 930                         min_value_at_pixel_ = value;
 931                         max_value_at_pixel_ = value;
 932                         prev_value_at_pixel_ = value;
 933                         current_pixel_pos_ = x;
 934                 } else
 935                         prev_value_at_pixel_ = std::numeric_limits<float>::quiet_NaN();
 936         }
 937
 938         const int pixel_pos = (int)(x + 0.5);
 939
 940         if (pixel_pos > current_pixel_pos_) {
 941                 if (pixel_pos - current_pixel_pos_ == 1) {
 942                         if (std::isnan(prev_value_at_pixel_)) {
 943                                 value_at_pixel_pos_.push_back(prev_value_at_pixel_);
 944                         } else {
 945                                 // Average the min/max range to create one value for the previous pixel
 946                                 const float avg = (min_value_at_pixel_ + max_value_at_pixel_) / 2;
 947                                 value_at_pixel_pos_.push_back(avg);
 948                         }
 949                 } else {
 950                         // Interpolate values to create values for the intermediate pixels
 951                         const float start_value = prev_value_at_pixel_;
 952                         const float end_value = value;
 953                         const int steps = fabs(pixel_pos - current_pixel_pos_);
 954                         const double gradient = (end_value - start_value) / steps;
 955                         for (int i = 0; i < steps; i++) {
 956                                 if (current_pixel_pos_ + i < 0)
 957                                         continue;
 958                                 value_at_pixel_pos_.push_back(start_value + i * gradient);
 959                         }
 960                 }
 961
 962                 min_value_at_pixel_ = value;
 963                 max_value_at_pixel_ = value;
 964                 prev_value_at_pixel_ = value;
 965                 current_pixel_pos_ = pixel_pos;
 966         } else {
 967                 // Another sample for the same pixel
 968                 if (value < min_value_at_pixel_)
 969                         min_value_at_pixel_ = value;
 970                 if (value > max_value_at_pixel_)
 971                         max_value_at_pixel_ = value;
 972         }
 973 }
 974
 975 void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
 976 {
 977         // Add the standard options
 978         Signal::populate_popup_form(parent, form);
 979
 980         QFormLayout *const layout = new QFormLayout;
 981
 982         // Add div-related settings
 983         pvdiv_sb_ = new QSpinBox(parent);
 984         pvdiv_sb_->setRange(0, MaximumVDivs);
 985         pvdiv_sb_->setValue(pos_vdivs_);
 986         connect(pvdiv_sb_, SIGNAL(valueChanged(int)),
 987                 this, SLOT(on_pos_vdivs_changed(int)));
 988         layout->addRow(tr("Number of pos vertical divs"), pvdiv_sb_);
 989
 990         nvdiv_sb_ = new QSpinBox(parent);
 991         nvdiv_sb_->setRange(0, MaximumVDivs);
 992         nvdiv_sb_->setValue(neg_vdivs_);
 993         connect(nvdiv_sb_, SIGNAL(valueChanged(int)),
 994                 this, SLOT(on_neg_vdivs_changed(int)));
 995         layout->addRow(tr("Number of neg vertical divs"), nvdiv_sb_);
 996
 997         div_height_sb_ = new QSpinBox(parent);
 998         div_height_sb_->setRange(20, 1000);
 999         div_height_sb_->setSingleStep(5);
1000         div_height_sb_->setSuffix(tr(" pixels"));
1001         div_height_sb_->setValue(div_height_);
1002         connect(div_height_sb_, SIGNAL(valueChanged(int)),
1003                 this, SLOT(on_div_height_changed(int)));
1004         layout->addRow(tr("Div height"), div_height_sb_);
1005
1006         // Add the vertical resolution
1007         resolution_cb_ = new QComboBox(parent);
1008
1009         for (int i = MinScaleIndex; i < MaxScaleIndex; i++) {
1010                 const QString label = QString("%1").arg(get_resolution(i));
1011                 resolution_cb_->insertItem(0, label, QVariant(i));
1012         }
1013
1014         int cur_idx = resolution_cb_->findData(QVariant(scale_index_));
1015         resolution_cb_->setCurrentIndex(cur_idx);
1016
1017         connect(resolution_cb_, SIGNAL(currentIndexChanged(int)),
1018                 this, SLOT(on_resolution_changed(int)));
1019
1020         QGridLayout *const vdiv_layout = new QGridLayout;
1021         QLabel *const vdiv_unit = new QLabel(tr("V/div"));
1022         vdiv_layout->addWidget(resolution_cb_, 0, 0);
1023         vdiv_layout->addWidget(vdiv_unit, 0, 1);
1024
1025         layout->addRow(tr("Vertical resolution"), vdiv_layout);
1026
1027         // Add the autoranging checkbox
1028         QCheckBox* autoranging_cb = new QCheckBox();
1029         autoranging_cb->setCheckState(autoranging_ ? Qt::Checked : Qt::Unchecked);
1030
1031         connect(autoranging_cb, SIGNAL(stateChanged(int)),
1032                 this, SLOT(on_autoranging_changed(int)));
1033
1034         layout->addRow(tr("Autoranging"), autoranging_cb);
1035
1036         // Add the conversion type dropdown
1037         conversion_cb_ = new QComboBox();
1038
1039         conversion_cb_->addItem(tr("none"),
1040                 SignalBase::NoConversion);
1041         conversion_cb_->addItem(tr("to logic via threshold"),
1042                 SignalBase::A2LConversionByThreshold);
1043         conversion_cb_->addItem(tr("to logic via schmitt-trigger"),
1044                 SignalBase::A2LConversionBySchmittTrigger);
1045
1046         cur_idx = conversion_cb_->findData(QVariant(base_->get_conversion_type()));
1047         conversion_cb_->setCurrentIndex(cur_idx);
1048
1049         layout->addRow(tr("Conversion"), conversion_cb_);
1050
1051         connect(conversion_cb_, SIGNAL(currentIndexChanged(int)),
1052                 this, SLOT(on_conversion_changed(int)));
1053
1054     // Add the conversion threshold settings
1055     conv_threshold_cb_ = new QComboBox();
1056     conv_threshold_cb_->setEditable(true);
1057
1058     layout->addRow(tr("Conversion threshold(s)"), conv_threshold_cb_);
1059
1060     connect(conv_threshold_cb_, SIGNAL(currentIndexChanged(int)),
1061             this, SLOT(on_conv_threshold_changed(int)));
1062     connect(conv_threshold_cb_, SIGNAL(editTextChanged(const QString&)),
1063             this, SLOT(on_conv_threshold_changed()));  // index will be -1
1064
1065         // Add the display type dropdown
1066         display_type_cb_ = new QComboBox();
1067
1068         display_type_cb_->addItem(tr("analog"), DisplayAnalog);
1069         display_type_cb_->addItem(tr("converted"), DisplayConverted);
1070         display_type_cb_->addItem(tr("analog+converted"), DisplayBoth);
1071
1072         cur_idx = display_type_cb_->findData(QVariant(display_type_));
1073         display_type_cb_->setCurrentIndex(cur_idx);
1074
1075         layout->addRow(tr("Show traces for"), display_type_cb_);
1076
1077         connect(display_type_cb_, SIGNAL(currentIndexChanged(int)),
1078                 this, SLOT(on_display_type_changed(int)));
1079
1080         // Update the conversion widget contents and states
1081         update_conversion_widgets();
1082
1083         form->addRow(layout);
1084 }
1085
1086 void AnalogSignal::hover_point_changed(const QPoint &hp)
1087 {
1088         Signal::hover_point_changed(hp);
1089
1090         // Note: Even though the view area begins at 0, we exclude 0 because
1091         // that's also the value given when the cursor is over the header to the
1092         // left of the trace paint area
1093         if (hp.x() <= 0) {
1094                 value_at_hover_pos_ = std::numeric_limits<float>::quiet_NaN();
1095         } else {
1096                 if ((size_t)hp.x() < value_at_pixel_pos_.size())
1097                         value_at_hover_pos_ = value_at_pixel_pos_.at(hp.x());
1098                 else
1099                         value_at_hover_pos_ = std::numeric_limits<float>::quiet_NaN();
1100         }
1101 }
1102
1103 void AnalogSignal::on_setting_changed(const QString &key, const QVariant &value)
1104 {
1105         Signal::on_setting_changed(key, value);
1106
1107         if (key == GlobalSettings::Key_View_ShowSamplingPoints)
1108                 show_sampling_points_ = value.toBool();
1109
1110         if (key == GlobalSettings::Key_View_FillSignalHighAreas)
1111                 fill_high_areas_ = value.toBool();
1112
1113         if (key == GlobalSettings::Key_View_FillSignalHighAreaColor)
1114                 high_fill_color_ = QColor::fromRgba(value.value<uint32_t>());
1115
1116         if (key == GlobalSettings::Key_View_ShowAnalogMinorGrid)
1117                 show_analog_minor_grid_ = value.toBool();
1118
1119         if (key == GlobalSettings::Key_View_ConversionThresholdDispMode) {
1120                 conversion_threshold_disp_mode_ = value.toInt();
1121
1122                 if (owner_)
1123                         owner_->row_item_appearance_changed(false, true);
1124         }
1125 }
1126
1127 void AnalogSignal::on_min_max_changed(float min, float max)
1128 {
1129         (void)min;
1130         (void)max;
1131
1132         if (autoranging_)
1133                 perform_autoranging(false, false);
1134 }
1135
1136 void AnalogSignal::on_pos_vdivs_changed(int vdivs)
1137 {
1138         if (vdivs == pos_vdivs_)
1139                 return;
1140
1141         pos_vdivs_ = vdivs;
1142
1143         // There has to be at least one div, positive or negative
1144         if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
1145                 pos_vdivs_ = 1;
1146                 if (pvdiv_sb_)
1147                         pvdiv_sb_->setValue(pos_vdivs_);
1148         }
1149
1150         if (autoranging_) {
1151                 perform_autoranging(true, true);
1152
1153                 // It could be that a positive or negative div was added, so update
1154                 if (pvdiv_sb_) {
1155                         pvdiv_sb_->setValue(pos_vdivs_);
1156                         nvdiv_sb_->setValue(neg_vdivs_);
1157                 }
1158         }
1159
1160         if (owner_) {
1161                 // Call order is important, otherwise the lazy event handler won't work
1162                 owner_->extents_changed(false, true);
1163                 owner_->row_item_appearance_changed(false, true);
1164         }
1165 }
1166
1167 void AnalogSignal::on_neg_vdivs_changed(int vdivs)
1168 {
1169         if (vdivs == neg_vdivs_)
1170                 return;
1171
1172         neg_vdivs_ = vdivs;
1173
1174         // There has to be at least one div, positive or negative
1175         if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
1176                 pos_vdivs_ = 1;
1177                 if (pvdiv_sb_)
1178                         pvdiv_sb_->setValue(pos_vdivs_);
1179         }
1180
1181         if (autoranging_) {
1182                 perform_autoranging(true, true);
1183
1184                 // It could be that a positive or negative div was added, so update
1185                 if (pvdiv_sb_) {
1186                         pvdiv_sb_->setValue(pos_vdivs_);
1187                         nvdiv_sb_->setValue(neg_vdivs_);
1188                 }
1189         }
1190
1191         if (owner_) {
1192                 // Call order is important, otherwise the lazy event handler won't work
1193                 owner_->extents_changed(false, true);
1194                 owner_->row_item_appearance_changed(false, true);
1195         }
1196 }
1197
1198 void AnalogSignal::on_div_height_changed(int height)
1199 {
1200         div_height_ = height;
1201         update_scale();
1202
1203         if (owner_) {
1204                 // Call order is important, otherwise the lazy event handler won't work
1205                 owner_->extents_changed(false, true);
1206                 owner_->row_item_appearance_changed(false, true);
1207         }
1208 }
1209
1210 void AnalogSignal::on_resolution_changed(int index)
1211 {
1212         scale_index_ = resolution_cb_->itemData(index).toInt();
1213         update_scale();
1214
1215         if (owner_)
1216                 owner_->row_item_appearance_changed(false, true);
1217 }
1218
1219 void AnalogSignal::on_autoranging_changed(int state)
1220 {
1221         autoranging_ = (state == Qt::Checked);
1222
1223         if (autoranging_)
1224                 perform_autoranging(false, true);
1225
1226         if (owner_) {
1227                 // Call order is important, otherwise the lazy event handler won't work
1228                 owner_->extents_changed(false, true);
1229                 owner_->row_item_appearance_changed(false, true);
1230         }
1231 }
1232
1233 void AnalogSignal::on_conversion_changed(int index)
1234 {
1235         SignalBase::ConversionType old_conv_type = base_->get_conversion_type();
1236
1237         SignalBase::ConversionType conv_type =
1238                 (SignalBase::ConversionType)(conversion_cb_->itemData(index).toInt());
1239
1240         if (conv_type != old_conv_type) {
1241                 base_->set_conversion_type(conv_type);
1242                 update_conversion_widgets();
1243
1244                 if (owner_)
1245                         owner_->row_item_appearance_changed(false, true);
1246         }
1247 }
1248
1249 void AnalogSignal::on_conv_threshold_changed(int index)
1250 {
1251         SignalBase::ConversionType conv_type = base_->get_conversion_type();
1252
1253         // Note: index is set to -1 if the text in the combo box matches none of
1254         // the entries in the combo box
1255
1256         if ((index == -1) && (conv_threshold_cb_->currentText().length() == 0))
1257                 return;
1258
1259         // The combo box entry with the custom value has user_data set to -1
1260         const int user_data = conv_threshold_cb_->findText(
1261                         conv_threshold_cb_->currentText());
1262
1263         const bool use_custom_thr = (index == -1) || (user_data == -1);
1264
1265         if (conv_type == SignalBase::A2LConversionByThreshold && use_custom_thr) {
1266                 // Not one of the preset values, try to parse the combo box text
1267                 // Note: Regex loosely based on
1268                 // https://txt2re.com/index-c++.php3?s=0.1V&1&-13
1269                 QString re1 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1270                 QString re2 = "([a-zA-Z]*)"; // SI unit
1271                 QRegExp regex(re1 + re2);
1272
1273                 const QString text = conv_threshold_cb_->currentText();
1274                 if (!regex.exactMatch(text))
1275                         return;  // String doesn't match the regex
1276
1277                 QStringList tokens = regex.capturedTexts();
1278
1279                 // For now, we simply assume that the unit is volt without modifiers
1280                 const double thr = tokens.at(1).toDouble();
1281
1282                 // Only restart the conversion if the threshold was updated.
1283                 // We're starting a delayed conversion because the user may still be
1284                 // typing and the UI would lag if we kept on restarting it immediately
1285                 if (base_->set_conversion_option("threshold_value", thr))
1286                         base_->start_conversion(true);
1287         }
1288
1289         if (conv_type == SignalBase::A2LConversionBySchmittTrigger && use_custom_thr) {
1290                 // Not one of the preset values, try to parse the combo box text
1291                 // Note: Regex loosely based on
1292                 // https://txt2re.com/index-c++.php3?s=0.1V/0.2V&2&14&-22&3&15
1293                 QString re1 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1294                 QString re2 = "([a-zA-Z]*)"; // SI unit
1295                 QString re3 = "\\/"; // Forward slash, not captured
1296                 QString re4 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1297                 QString re5 = "([a-zA-Z]*)"; // SI unit
1298                 QRegExp regex(re1 + re2 + re3 + re4 + re5);
1299
1300                 const QString text = conv_threshold_cb_->currentText();
1301                 if (!regex.exactMatch(text))
1302                         return;  // String doesn't match the regex
1303
1304                 QStringList tokens = regex.capturedTexts();
1305
1306                 // For now, we simply assume that the unit is volt without modifiers
1307                 const double low_thr = tokens.at(1).toDouble();
1308                 const double high_thr = tokens.at(3).toDouble();
1309
1310                 // Only restart the conversion if one of the options was updated.
1311                 // We're starting a delayed conversion because the user may still be
1312                 // typing and the UI would lag if we kept on restarting it immediately
1313                 bool o1 = base_->set_conversion_option("threshold_value_low", low_thr);
1314                 bool o2 = base_->set_conversion_option("threshold_value_high", high_thr);
1315                 if (o1 || o2)
1316                         base_->start_conversion(true);  // Start delayed conversion
1317         }
1318
1319         base_->set_conversion_preset((SignalBase::ConversionPreset)index);
1320
1321         // Immediately start the conversion if we're not using custom values
1322         // (i.e. we're using one of the presets)
1323         if (!use_custom_thr)
1324                 base_->start_conversion();
1325 }
1326
1327 void AnalogSignal::on_delayed_conversion_starter()
1328 {
1329         base_->start_conversion();
1330 }
1331
1332 void AnalogSignal::on_display_type_changed(int index)
1333 {
1334         display_type_ = (DisplayType)(display_type_cb_->itemData(index).toInt());
1335
1336         if (owner_)
1337                 owner_->row_item_appearance_changed(false, true);
1338 }
1339
1340 } // namespace trace
1341 } // namespace views
1342 } // namespace pv