pv/views/trace/logicsignal.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
  25 #include <algorithm>
  26
  27 #include <QApplication>
  28 #include <QFormLayout>
  29 #include <QToolBar>
  30
  31 #include "logicsignal.hpp"
  32 #include "view.hpp"
  33
  34 #include <pv/data/logic.hpp>
  35 #include <pv/data/logicsegment.hpp>
  36 #include <pv/data/signalbase.hpp>
  37 #include <pv/devicemanager.hpp>
  38 #include <pv/devices/device.hpp>
  39 #include <pv/globalsettings.hpp>
  40 #include <pv/session.hpp>
  41
  42 #include <libsigrokcxx/libsigrokcxx.hpp>
  43
  44 using std::deque;
  45 using std::max;
  46 using std::make_pair;
  47 using std::min;
  48 using std::none_of;
  49 using std::out_of_range;
  50 using std::pair;
  51 using std::shared_ptr;
  52 using std::vector;
  53
  54 using sigrok::ConfigKey;
  55 using sigrok::Capability;
  56 using sigrok::Trigger;
  57 using sigrok::TriggerMatch;
  58 using sigrok::TriggerMatchType;
  59
  60 using pv::data::LogicSegment;
  61
  62 namespace pv {
  63 namespace views {
  64 namespace trace {
  65
  66 const float LogicSignal::Oversampling = 2.0f;
  67
  68 const QColor LogicSignal::EdgeColor(0x80, 0x80, 0x80);
  69 const QColor LogicSignal::HighColor(0x00, 0xC0, 0x00);
  70 const QColor LogicSignal::LowColor(0xC0, 0x00, 0x00);
  71 const QColor LogicSignal::SamplingPointColor(0x77, 0x77, 0x77);
  72
  73 const QColor LogicSignal::SignalColors[10] = {
  74         QColor(0x16, 0x19, 0x1A),       // Black
  75         QColor(0x8F, 0x52, 0x02),       // Brown
  76         QColor(0xCC, 0x00, 0x00),       // Red
  77         QColor(0xF5, 0x79, 0x00),       // Orange
  78         QColor(0xED, 0xD4, 0x00),       // Yellow
  79         QColor(0x73, 0xD2, 0x16),       // Green
  80         QColor(0x34, 0x65, 0xA4),       // Blue
  81         QColor(0x75, 0x50, 0x7B),       // Violet
  82         QColor(0x88, 0x8A, 0x85),       // Grey
  83         QColor(0xEE, 0xEE, 0xEC),       // White
  84 };
  85
  86 QColor LogicSignal::TriggerMarkerBackgroundColor = QColor(0xED, 0xD4, 0x00);
  87 const int LogicSignal::TriggerMarkerPadding = 2;
  88 const char* LogicSignal::TriggerMarkerIcons[8] = {
  89         nullptr,
  90         ":/icons/trigger-marker-low.svg",
  91         ":/icons/trigger-marker-high.svg",
  92         ":/icons/trigger-marker-rising.svg",
  93         ":/icons/trigger-marker-falling.svg",
  94         ":/icons/trigger-marker-change.svg",
  95         nullptr,
  96         nullptr
  97 };
  98
  99 QCache<QString, const QIcon> LogicSignal::icon_cache_;
 100 QCache<QString, const QPixmap> LogicSignal::pixmap_cache_;
 101
 102 LogicSignal::LogicSignal(
 103         pv::Session &session,
 104         shared_ptr<devices::Device> device,
 105         shared_ptr<data::SignalBase> base) :
 106         Signal(session, base),
 107         device_(device),
 108         trigger_types_(get_trigger_types()),
 109         trigger_none_(nullptr),
 110         trigger_rising_(nullptr),
 111         trigger_high_(nullptr),
 112         trigger_falling_(nullptr),
 113         trigger_low_(nullptr),
 114         trigger_change_(nullptr)
 115 {
 116         shared_ptr<Trigger> trigger;
 117
 118         base_->set_color(SignalColors[base->index() % countof(SignalColors)]);
 119
 120         GlobalSettings gs;
 121         signal_height_ = gs.value(GlobalSettings::Key_View_DefaultLogicHeight).toInt();
 122
 123         /* Populate this channel's trigger setting with whatever we
 124          * find in the current session trigger, if anything. */
 125         trigger_match_ = nullptr;
 126         if ((trigger = session_.session()->trigger()))
 127                 for (auto stage : trigger->stages())
 128                         for (auto match : stage->matches())
 129                                 if (match->channel() == base_->channel())
 130                                         trigger_match_ = match->type();
 131 }
 132
 133 shared_ptr<pv::data::SignalData> LogicSignal::data() const
 134 {
 135         return base_->logic_data();
 136 }
 137
 138 shared_ptr<pv::data::Logic> LogicSignal::logic_data() const
 139 {
 140         return base_->logic_data();
 141 }
 142
 143 void LogicSignal::save_settings(QSettings &settings) const
 144 {
 145         settings.setValue("trace_height", signal_height_);
 146 }
 147
 148 void LogicSignal::restore_settings(QSettings &settings)
 149 {
 150         if (settings.contains("trace_height")) {
 151                 const int old_height = signal_height_;
 152                 signal_height_ = settings.value("trace_height").toInt();
 153
 154                 if ((signal_height_ != old_height) && owner_) {
 155                         // Call order is important, otherwise the lazy event handler won't work
 156                         owner_->extents_changed(false, true);
 157                         owner_->row_item_appearance_changed(false, true);
 158                 }
 159         }
 160 }
 161
 162 pair<int, int> LogicSignal::v_extents() const
 163 {
 164         const int signal_margin =
 165                 QFontMetrics(QApplication::font()).height() / 2;
 166         return make_pair(-signal_height_ - signal_margin, signal_margin);
 167 }
 168
 169 void LogicSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
 170 {
 171         QLineF *line;
 172
 173         vector< pair<int64_t, bool> > edges;
 174
 175         assert(base_);
 176         assert(owner_);
 177
 178         const int y = get_visual_y();
 179
 180         if (!base_->enabled())
 181                 return;
 182
 183         const float low_offset = y + 0.5f;
 184         const float high_offset = low_offset - signal_height_;
 185
 186         shared_ptr<LogicSegment> segment = get_logic_segment_to_paint();
 187         if (!segment || (segment->get_sample_count() == 0))
 188                 return;
 189
 190         double samplerate = segment->samplerate();
 191
 192         // Show sample rate as 1Hz when it is unknown
 193         if (samplerate == 0.0)
 194                 samplerate = 1.0;
 195
 196         const double pixels_offset = pp.pixels_offset();
 197         const pv::util::Timestamp& start_time = segment->start_time();
 198         const int64_t last_sample = (int64_t)segment->get_sample_count() - 1;
 199         const double samples_per_pixel = samplerate * pp.scale();
 200         const double pixels_per_sample = 1 / samples_per_pixel;
 201         const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
 202         const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
 203
 204         const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
 205                 (int64_t)0), last_sample);
 206         const uint64_t end_sample = min(max(ceil(end).convert_to<int64_t>(),
 207                 (int64_t)0), last_sample);
 208
 209         segment->get_subsampled_edges(edges, start_sample, end_sample,
 210                 samples_per_pixel / Oversampling, base_->index());
 211         assert(edges.size() >= 2);
 212
 213         const float first_sample_x =
 214                 pp.left() + (edges.front().first / samples_per_pixel - pixels_offset);
 215         const float last_sample_x =
 216                 pp.left() + (edges.back().first / samples_per_pixel - pixels_offset);
 217
 218         // Check whether we need to paint the sampling points
 219         GlobalSettings settings;
 220         const bool show_sampling_points =
 221                 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() &&
 222                 (samples_per_pixel < 0.25);
 223
 224         vector<QRectF> sampling_points;
 225         float sampling_point_x = first_sample_x;
 226         int64_t sampling_point_sample = start_sample;
 227         const int w = 2;
 228
 229         if (show_sampling_points)
 230                 sampling_points.reserve(end_sample - start_sample + 1);
 231
 232         // Check whether we need to fill the high areas
 233         const bool fill_high_areas =
 234                 settings.value(GlobalSettings::Key_View_FillSignalHighAreas).toBool();
 235         vector<QRectF> high_rects;
 236         float rising_edge_x;
 237         bool rising_edge_seen = false;
 238
 239         // Paint the edges
 240         const unsigned int edge_count = edges.size() - 2;
 241         QLineF *const edge_lines = new QLineF[edge_count];
 242         line = edge_lines;
 243
 244         if (edges.front().second) {
 245                 // Beginning of trace is high
 246                 rising_edge_x = first_sample_x;
 247                 rising_edge_seen = true;
 248         }
 249
 250         for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
 251                 // Note: multiple edges occupying a single pixel are represented by an edge
 252                 // with undefined logic level. This means that only the first falling edge
 253                 // after a rising edge corresponds to said rising edge - and vice versa. If
 254                 // more edges with the same logic level follow, they denote multiple edges.
 255
 256                 const float x = pp.left() + ((*i).first / samples_per_pixel - pixels_offset);
 257                 *line++ = QLineF(x, high_offset, x, low_offset);
 258
 259                 if (fill_high_areas) {
 260                         // Any edge terminates a high area
 261                         if (rising_edge_seen) {
 262                                 const int width = x - rising_edge_x;
 263                                 if (width > 0)
 264                                         high_rects.emplace_back(rising_edge_x, high_offset,
 265                                                 width, signal_height_);
 266                                 rising_edge_seen = false;
 267                         }
 268
 269                         // Only rising edges start high areas
 270                         if ((*i).second) {
 271                                 rising_edge_x = x;
 272                                 rising_edge_seen = true;
 273                         }
 274                 }
 275
 276                 if (show_sampling_points)
 277                         while (sampling_point_sample < (*i).first) {
 278                                 const float y = (*i).second ? low_offset : high_offset;
 279                                 sampling_points.emplace_back(
 280                                         QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
 281                                 sampling_point_sample++;
 282                                 sampling_point_x += pixels_per_sample;
 283                         };
 284         }
 285
 286         // Calculate the sample points from the last edge to the end of the trace
 287         if (show_sampling_points)
 288                 while ((uint64_t)sampling_point_sample <= end_sample) {
 289                         // Signal changed after the last edge, so the level is inverted
 290                         const float y = (edges.cend() - 1)->second ? high_offset : low_offset;
 291                         sampling_points.emplace_back(
 292                                 QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
 293                         sampling_point_sample++;
 294                         sampling_point_x += pixels_per_sample;
 295                 };
 296
 297         if (fill_high_areas) {
 298                 // Add last high rectangle if the signal is still high at the end of the trace
 299                 if (rising_edge_seen && (edges.cend() - 1)->second)
 300                         high_rects.emplace_back(rising_edge_x, high_offset,
 301                                 last_sample_x - rising_edge_x, signal_height_);
 302
 303                 const QColor fill_color = QColor::fromRgba(settings.value(
 304                         GlobalSettings::Key_View_FillSignalHighAreaColor).value<uint32_t>());
 305                 p.setPen(fill_color);
 306                 p.setBrush(fill_color);
 307                 p.drawRects((const QRectF*)(high_rects.data()), high_rects.size());
 308         }
 309
 310         p.setPen(EdgeColor);
 311         p.drawLines(edge_lines, edge_count);
 312         delete[] edge_lines;
 313
 314         // Paint the caps
 315         const unsigned int max_cap_line_count = edges.size();
 316         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 317
 318         p.setPen(HighColor);
 319         paint_caps(p, cap_lines, edges, true, samples_per_pixel,
 320                 pixels_offset, pp.left(), high_offset);
 321         p.setPen(LowColor);
 322         paint_caps(p, cap_lines, edges, false, samples_per_pixel,
 323                 pixels_offset, pp.left(), low_offset);
 324
 325         delete[] cap_lines;
 326
 327         // Paint the sampling points
 328         if (show_sampling_points) {
 329                 p.setPen(SamplingPointColor);
 330                 p.drawRects(sampling_points.data(), sampling_points.size());
 331         }
 332 }
 333
 334 void LogicSignal::paint_fore(QPainter &p, ViewItemPaintParams &pp)
 335 {
 336         if (base_->enabled()) {
 337                 if (trigger_match_) {
 338                         // Draw the trigger marker
 339                         const int y = get_visual_y();
 340
 341                         for (int32_t type_id : trigger_types_) {
 342                                 const TriggerMatchType *const type =
 343                                         TriggerMatchType::get(type_id);
 344                                 if (trigger_match_ != type || type_id < 0 ||
 345                                         (size_t)type_id >= countof(TriggerMarkerIcons) ||
 346                                         !TriggerMarkerIcons[type_id])
 347                                         continue;
 348
 349                                 const QPixmap *const pixmap = get_pixmap(
 350                                         TriggerMarkerIcons[type_id]);
 351                                 if (!pixmap)
 352                                         continue;
 353
 354                                 const float pad = TriggerMarkerPadding - 0.5f;
 355                                 const QSize size = pixmap->size();
 356                                 const QPoint point(
 357                                         pp.right() - size.width() - pad * 2,
 358                                         y - (signal_height_ + size.height()) / 2);
 359
 360                                 p.setPen(QPen(TriggerMarkerBackgroundColor.darker()));
 361                                 p.setBrush(TriggerMarkerBackgroundColor);
 362                                 p.drawRoundedRect(QRectF(point, size).adjusted(
 363                                         -pad, -pad, pad, pad), pad, pad);
 364                                 p.drawPixmap(point, *pixmap);
 365
 366                                 break;
 367                         }
 368                 }
 369
 370                 if (show_hover_marker_)
 371                         paint_hover_marker(p);
 372         }
 373 }
 374
 375 vector<LogicSegment::EdgePair> LogicSignal::get_nearest_level_changes(uint64_t sample_pos)
 376 {
 377         assert(base_);
 378         assert(owner_);
 379
 380         if (sample_pos == 0)
 381                 return vector<LogicSegment::EdgePair>();
 382
 383         shared_ptr<LogicSegment> segment = get_logic_segment_to_paint();
 384         if (!segment || (segment->get_sample_count() == 0))
 385                 return vector<LogicSegment::EdgePair>();
 386
 387         const View *view = owner_->view();
 388         assert(view);
 389         const double samples_per_pixel = base_->get_samplerate() * view->scale();
 390
 391         vector<LogicSegment::EdgePair> edges;
 392
 393         segment->get_surrounding_edges(edges, sample_pos,
 394                 samples_per_pixel / Oversampling, base_->index());
 395
 396         if (edges.empty())
 397                 return vector<LogicSegment::EdgePair>();
 398
 399         return edges;
 400 }
 401
 402 void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
 403         vector< pair<int64_t, bool> > &edges, bool level,
 404         double samples_per_pixel, double pixels_offset, float x_offset,
 405         float y_offset)
 406 {
 407         QLineF *line = lines;
 408
 409         for (auto i = edges.begin(); i != (edges.end() - 1); i++)
 410                 if ((*i).second == level) {
 411                         *line++ = QLineF(
 412                                 ((*i).first / samples_per_pixel -
 413                                         pixels_offset) + x_offset, y_offset,
 414                                 ((*(i+1)).first / samples_per_pixel -
 415                                         pixels_offset) + x_offset, y_offset);
 416                 }
 417
 418         p.drawLines(lines, line - lines);
 419 }
 420
 421 shared_ptr<pv::data::LogicSegment> LogicSignal::get_logic_segment_to_paint() const
 422 {
 423         shared_ptr<pv::data::LogicSegment> segment;
 424
 425         const deque< shared_ptr<pv::data::LogicSegment> > &segments =
 426                 base_->logic_data()->logic_segments();
 427
 428         if (!segments.empty()) {
 429                 if (segment_display_mode_ == ShowLastSegmentOnly) {
 430                         segment = segments.back();
 431                 }
 432
 433         if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
 434                 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
 435                         try {
 436                                 segment = segments.at(current_segment_);
 437                         } catch (out_of_range&) {
 438                                 qDebug() << "Current logic segment out of range for signal" << base_->name() << ":" << current_segment_;
 439                         }
 440                 }
 441         }
 442
 443         return segment;
 444 }
 445
 446 void LogicSignal::init_trigger_actions(QWidget *parent)
 447 {
 448         trigger_none_ = new QAction(*get_icon(":/icons/trigger-none.svg"),
 449                 tr("No trigger"), parent);
 450         trigger_none_->setCheckable(true);
 451         connect(trigger_none_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 452
 453         trigger_rising_ = new QAction(*get_icon(":/icons/trigger-rising.svg"),
 454                 tr("Trigger on rising edge"), parent);
 455         trigger_rising_->setCheckable(true);
 456         connect(trigger_rising_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 457
 458         trigger_high_ = new QAction(*get_icon(":/icons/trigger-high.svg"),
 459                 tr("Trigger on high level"), parent);
 460         trigger_high_->setCheckable(true);
 461         connect(trigger_high_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 462
 463         trigger_falling_ = new QAction(*get_icon(":/icons/trigger-falling.svg"),
 464                 tr("Trigger on falling edge"), parent);
 465         trigger_falling_->setCheckable(true);
 466         connect(trigger_falling_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 467
 468         trigger_low_ = new QAction(*get_icon(":/icons/trigger-low.svg"),
 469                 tr("Trigger on low level"), parent);
 470         trigger_low_->setCheckable(true);
 471         connect(trigger_low_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 472
 473         trigger_change_ = new QAction(*get_icon(":/icons/trigger-change.svg"),
 474                 tr("Trigger on rising or falling edge"), parent);
 475         trigger_change_->setCheckable(true);
 476         connect(trigger_change_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 477 }
 478
 479 const vector<int32_t> LogicSignal::get_trigger_types() const
 480 {
 481         // We may not be associated with a device
 482         if (!device_)
 483                 return vector<int32_t>();
 484
 485         const auto sr_dev = device_->device();
 486         if (sr_dev->config_check(ConfigKey::TRIGGER_MATCH, Capability::LIST)) {
 487                 const Glib::VariantContainerBase gvar =
 488                         sr_dev->config_list(ConfigKey::TRIGGER_MATCH);
 489
 490                 vector<int32_t> ttypes;
 491
 492                 for (unsigned int i = 0; i < gvar.get_n_children(); i++) {
 493                         Glib::VariantBase tmp_vb;
 494                         gvar.get_child(tmp_vb, i);
 495
 496                         Glib::Variant<int32_t> tmp_v =
 497                                 Glib::VariantBase::cast_dynamic< Glib::Variant<int32_t> >(tmp_vb);
 498
 499                         ttypes.push_back(tmp_v.get());
 500                 }
 501
 502                 return ttypes;
 503         } else {
 504                 return vector<int32_t>();
 505         }
 506 }
 507
 508 QAction* LogicSignal::action_from_trigger_type(const TriggerMatchType *type)
 509 {
 510         QAction *action;
 511
 512         action = trigger_none_;
 513         if (type) {
 514                 switch (type->id()) {
 515                 case SR_TRIGGER_ZERO:
 516                         action = trigger_low_;
 517                         break;
 518                 case SR_TRIGGER_ONE:
 519                         action = trigger_high_;
 520                         break;
 521                 case SR_TRIGGER_RISING:
 522                         action = trigger_rising_;
 523                         break;
 524                 case SR_TRIGGER_FALLING:
 525                         action = trigger_falling_;
 526                         break;
 527                 case SR_TRIGGER_EDGE:
 528                         action = trigger_change_;
 529                         break;
 530                 default:
 531                         assert(false);
 532                 }
 533         }
 534
 535         return action;
 536 }
 537
 538 const TriggerMatchType *LogicSignal::trigger_type_from_action(QAction *action)
 539 {
 540         if (action == trigger_low_)
 541                 return TriggerMatchType::ZERO;
 542         else if (action == trigger_high_)
 543                 return TriggerMatchType::ONE;
 544         else if (action == trigger_rising_)
 545                 return TriggerMatchType::RISING;
 546         else if (action == trigger_falling_)
 547                 return TriggerMatchType::FALLING;
 548         else if (action == trigger_change_)
 549                 return TriggerMatchType::EDGE;
 550         else
 551                 return nullptr;
 552 }
 553
 554 void LogicSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
 555 {
 556         Signal::populate_popup_form(parent, form);
 557
 558         signal_height_sb_ = new QSpinBox(parent);
 559         signal_height_sb_->setRange(5, 1000);
 560         signal_height_sb_->setSingleStep(5);
 561         signal_height_sb_->setSuffix(tr(" pixels"));
 562         signal_height_sb_->setValue(signal_height_);
 563         connect(signal_height_sb_, SIGNAL(valueChanged(int)),
 564                 this, SLOT(on_signal_height_changed(int)));
 565         form->addRow(tr("Trace height"), signal_height_sb_);
 566
 567         // Trigger settings
 568         const vector<int32_t> trig_types = get_trigger_types();
 569
 570         if (!trig_types.empty()) {
 571                 trigger_bar_ = new QToolBar(parent);
 572                 init_trigger_actions(trigger_bar_);
 573                 trigger_bar_->addAction(trigger_none_);
 574                 trigger_none_->setChecked(!trigger_match_);
 575
 576                 for (auto type_id : trig_types) {
 577                         const TriggerMatchType *const type =
 578                                 TriggerMatchType::get(type_id);
 579                         QAction *const action = action_from_trigger_type(type);
 580                         trigger_bar_->addAction(action);
 581                         action->setChecked(trigger_match_ == type);
 582                 }
 583
 584                 // Only allow triggers to be changed when we're stopped
 585                 if (session_.get_capture_state() != Session::Stopped)
 586                         for (QAction* action : trigger_bar_->findChildren<QAction*>())  // clazy:exclude=range-loop
 587                                 action->setEnabled(false);
 588
 589                 form->addRow(tr("Trigger"), trigger_bar_);
 590         }
 591 }
 592
 593 void LogicSignal::modify_trigger()
 594 {
 595         auto trigger = session_.session()->trigger();
 596         auto new_trigger = session_.device_manager().context()->create_trigger("pulseview");
 597
 598         if (trigger) {
 599                 for (auto stage : trigger->stages()) {
 600                         const auto &matches = stage->matches();
 601                         if (none_of(matches.begin(), matches.end(),
 602                             [&](shared_ptr<TriggerMatch> match) {
 603                                         return match->channel() != base_->channel(); }))
 604                                 continue;
 605
 606                         auto new_stage = new_trigger->add_stage();
 607                         for (auto match : stage->matches()) {
 608                                 if (match->channel() == base_->channel())
 609                                         continue;
 610                                 new_stage->add_match(match->channel(), match->type());
 611                         }
 612                 }
 613         }
 614
 615         if (trigger_match_) {
 616                 // Until we can let the user decide how to group trigger matches
 617                 // into stages, put all of the matches into a single stage --
 618                 // most devices only support a single trigger stage.
 619                 if (new_trigger->stages().empty())
 620                         new_trigger->add_stage();
 621
 622                 new_trigger->stages().back()->add_match(base_->channel(),
 623                         trigger_match_);
 624         }
 625
 626         session_.session()->set_trigger(
 627                 new_trigger->stages().empty() ? nullptr : new_trigger);
 628
 629         if (owner_)
 630                 owner_->row_item_appearance_changed(false, true);
 631 }
 632
 633 const QIcon* LogicSignal::get_icon(const char *path)
 634 {
 635         if (!icon_cache_.contains(path)) {
 636                 const QIcon *icon = new QIcon(path);
 637                 icon_cache_.insert(path, icon);
 638         }
 639
 640         return icon_cache_.take(path);
 641 }
 642
 643 const QPixmap* LogicSignal::get_pixmap(const char *path)
 644 {
 645         if (!pixmap_cache_.contains(path)) {
 646                 const QPixmap *pixmap = new QPixmap(path);
 647                 pixmap_cache_.insert(path, pixmap);
 648         }
 649
 650         return pixmap_cache_.take(path);
 651 }
 652
 653 void LogicSignal::on_trigger()
 654 {
 655         QAction *action;
 656
 657         action_from_trigger_type(trigger_match_)->setChecked(false);
 658
 659         action = (QAction *)sender();
 660         action->setChecked(true);
 661         trigger_match_ = trigger_type_from_action(action);
 662
 663         modify_trigger();
 664 }
 665
 666 void LogicSignal::on_signal_height_changed(int height)
 667 {
 668         signal_height_ = height;
 669
 670         if (owner_) {
 671                 // Call order is important, otherwise the lazy event handler won't work
 672                 owner_->extents_changed(false, true);
 673                 owner_->row_item_appearance_changed(false, true);
 674         }
 675 }
 676
 677 } // namespace trace
 678 } // namespace views
 679 } // namespace pv