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                         const int width = x - rising_edge_x;
 262                         if (rising_edge_seen && (width > 0)) {
 263                                 high_rects.emplace_back(rising_edge_x, high_offset,
 264                                         width, signal_height_);
 265                                 rising_edge_seen = false;
 266                         }
 267
 268                         // Only rising edges start high areas
 269                         if ((*i).second) {
 270                                 rising_edge_x = x;
 271                                 rising_edge_seen = true;
 272                         }
 273                 }
 274
 275                 if (show_sampling_points)
 276                         while (sampling_point_sample < (*i).first) {
 277                                 const float y = (*i).second ? low_offset : high_offset;
 278                                 sampling_points.emplace_back(
 279                                         QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
 280                                 sampling_point_sample++;
 281                                 sampling_point_x += pixels_per_sample;
 282                         };
 283         }
 284
 285         // Calculate the sample points from the last edge to the end of the trace
 286         if (show_sampling_points)
 287                 while ((uint64_t)sampling_point_sample <= end_sample) {
 288                         // Signal changed after the last edge, so the level is inverted
 289                         const float y = (edges.cend() - 1)->second ? high_offset : low_offset;
 290                         sampling_points.emplace_back(
 291                                 QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
 292                         sampling_point_sample++;
 293                         sampling_point_x += pixels_per_sample;
 294                 };
 295
 296         if (fill_high_areas) {
 297                 // Add last high rectangle if the signal is still high at the end of the trace
 298                 if (rising_edge_seen && (edges.cend() - 1)->second)
 299                         high_rects.emplace_back(rising_edge_x, high_offset,
 300                                 last_sample_x - rising_edge_x, signal_height_);
 301
 302                 const QColor fill_color = QColor::fromRgba(settings.value(
 303                         GlobalSettings::Key_View_FillSignalHighAreaColor).value<uint32_t>());
 304                 p.setPen(fill_color);
 305                 p.setBrush(fill_color);
 306                 p.drawRects((const QRectF*)(high_rects.data()), high_rects.size());
 307         }
 308
 309         p.setPen(EdgeColor);
 310         p.drawLines(edge_lines, edge_count);
 311         delete[] edge_lines;
 312
 313         // Paint the caps
 314         const unsigned int max_cap_line_count = edges.size();
 315         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 316
 317         p.setPen(HighColor);
 318         paint_caps(p, cap_lines, edges, true, samples_per_pixel,
 319                 pixels_offset, pp.left(), high_offset);
 320         p.setPen(LowColor);
 321         paint_caps(p, cap_lines, edges, false, samples_per_pixel,
 322                 pixels_offset, pp.left(), low_offset);
 323
 324         delete[] cap_lines;
 325
 326         // Paint the sampling points
 327         if (show_sampling_points) {
 328                 p.setPen(SamplingPointColor);
 329                 p.drawRects(sampling_points.data(), sampling_points.size());
 330         }
 331 }
 332
 333 void LogicSignal::paint_fore(QPainter &p, ViewItemPaintParams &pp)
 334 {
 335         if (base_->enabled()) {
 336                 if (trigger_match_) {
 337                         // Draw the trigger marker
 338                         const int y = get_visual_y();
 339
 340                         for (int32_t type_id : trigger_types_) {
 341                                 const TriggerMatchType *const type =
 342                                         TriggerMatchType::get(type_id);
 343                                 if (trigger_match_ != type || type_id < 0 ||
 344                                         (size_t)type_id >= countof(TriggerMarkerIcons) ||
 345                                         !TriggerMarkerIcons[type_id])
 346                                         continue;
 347
 348                                 const QPixmap *const pixmap = get_pixmap(
 349                                         TriggerMarkerIcons[type_id]);
 350                                 if (!pixmap)
 351                                         continue;
 352
 353                                 const float pad = TriggerMarkerPadding - 0.5f;
 354                                 const QSize size = pixmap->size();
 355                                 const QPoint point(
 356                                         pp.right() - size.width() - pad * 2,
 357                                         y - (signal_height_ + size.height()) / 2);
 358
 359                                 p.setPen(QPen(TriggerMarkerBackgroundColor.darker()));
 360                                 p.setBrush(TriggerMarkerBackgroundColor);
 361                                 p.drawRoundedRect(QRectF(point, size).adjusted(
 362                                         -pad, -pad, pad, pad), pad, pad);
 363                                 p.drawPixmap(point, *pixmap);
 364
 365                                 break;
 366                         }
 367                 }
 368
 369                 if (show_hover_marker_)
 370                         paint_hover_marker(p);
 371         }
 372 }
 373
 374 vector<LogicSegment::EdgePair> LogicSignal::get_nearest_level_changes(uint64_t sample_pos)
 375 {
 376         assert(base_);
 377         assert(owner_);
 378
 379         if (sample_pos == 0)
 380                 return vector<LogicSegment::EdgePair>();
 381
 382         shared_ptr<LogicSegment> segment = get_logic_segment_to_paint();
 383         if (!segment || (segment->get_sample_count() == 0))
 384                 return vector<LogicSegment::EdgePair>();
 385
 386         const View *view = owner_->view();
 387         assert(view);
 388         const double samples_per_pixel = base_->get_samplerate() * view->scale();
 389
 390         vector<LogicSegment::EdgePair> edges;
 391
 392         segment->get_surrounding_edges(edges, sample_pos,
 393                 samples_per_pixel / Oversampling, base_->index());
 394
 395         if (edges.empty())
 396                 return vector<LogicSegment::EdgePair>();
 397
 398         return edges;
 399 }
 400
 401 void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
 402         vector< pair<int64_t, bool> > &edges, bool level,
 403         double samples_per_pixel, double pixels_offset, float x_offset,
 404         float y_offset)
 405 {
 406         QLineF *line = lines;
 407
 408         for (auto i = edges.begin(); i != (edges.end() - 1); i++)
 409                 if ((*i).second == level) {
 410                         *line++ = QLineF(
 411                                 ((*i).first / samples_per_pixel -
 412                                         pixels_offset) + x_offset, y_offset,
 413                                 ((*(i+1)).first / samples_per_pixel -
 414                                         pixels_offset) + x_offset, y_offset);
 415                 }
 416
 417         p.drawLines(lines, line - lines);
 418 }
 419
 420 shared_ptr<pv::data::LogicSegment> LogicSignal::get_logic_segment_to_paint() const
 421 {
 422         shared_ptr<pv::data::LogicSegment> segment;
 423
 424         const deque< shared_ptr<pv::data::LogicSegment> > &segments =
 425                 base_->logic_data()->logic_segments();
 426
 427         if (!segments.empty()) {
 428                 if (segment_display_mode_ == ShowLastSegmentOnly) {
 429                         segment = segments.back();
 430                 }
 431
 432         if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
 433                 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
 434                         try {
 435                                 segment = segments.at(current_segment_);
 436                         } catch (out_of_range&) {
 437                                 qDebug() << "Current logic segment out of range for signal" << base_->name() << ":" << current_segment_;
 438                         }
 439                 }
 440         }
 441
 442         return segment;
 443 }
 444
 445 void LogicSignal::init_trigger_actions(QWidget *parent)
 446 {
 447         trigger_none_ = new QAction(*get_icon(":/icons/trigger-none.svg"),
 448                 tr("No trigger"), parent);
 449         trigger_none_->setCheckable(true);
 450         connect(trigger_none_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 451
 452         trigger_rising_ = new QAction(*get_icon(":/icons/trigger-rising.svg"),
 453                 tr("Trigger on rising edge"), parent);
 454         trigger_rising_->setCheckable(true);
 455         connect(trigger_rising_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 456
 457         trigger_high_ = new QAction(*get_icon(":/icons/trigger-high.svg"),
 458                 tr("Trigger on high level"), parent);
 459         trigger_high_->setCheckable(true);
 460         connect(trigger_high_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 461
 462         trigger_falling_ = new QAction(*get_icon(":/icons/trigger-falling.svg"),
 463                 tr("Trigger on falling edge"), parent);
 464         trigger_falling_->setCheckable(true);
 465         connect(trigger_falling_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 466
 467         trigger_low_ = new QAction(*get_icon(":/icons/trigger-low.svg"),
 468                 tr("Trigger on low level"), parent);
 469         trigger_low_->setCheckable(true);
 470         connect(trigger_low_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 471
 472         trigger_change_ = new QAction(*get_icon(":/icons/trigger-change.svg"),
 473                 tr("Trigger on rising or falling edge"), parent);
 474         trigger_change_->setCheckable(true);
 475         connect(trigger_change_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 476 }
 477
 478 const vector<int32_t> LogicSignal::get_trigger_types() const
 479 {
 480         // We may not be associated with a device
 481         if (!device_)
 482                 return vector<int32_t>();
 483
 484         const auto sr_dev = device_->device();
 485         if (sr_dev->config_check(ConfigKey::TRIGGER_MATCH, Capability::LIST)) {
 486                 const Glib::VariantContainerBase gvar =
 487                         sr_dev->config_list(ConfigKey::TRIGGER_MATCH);
 488
 489                 vector<int32_t> ttypes;
 490
 491                 for (unsigned int i = 0; i < gvar.get_n_children(); i++) {
 492                         Glib::VariantBase tmp_vb;
 493                         gvar.get_child(tmp_vb, i);
 494
 495                         Glib::Variant<int32_t> tmp_v =
 496                                 Glib::VariantBase::cast_dynamic< Glib::Variant<int32_t> >(tmp_vb);
 497
 498                         ttypes.push_back(tmp_v.get());
 499                 }
 500
 501                 return ttypes;
 502         } else {
 503                 return vector<int32_t>();
 504         }
 505 }
 506
 507 QAction* LogicSignal::action_from_trigger_type(const TriggerMatchType *type)
 508 {
 509         QAction *action;
 510
 511         action = trigger_none_;
 512         if (type) {
 513                 switch (type->id()) {
 514                 case SR_TRIGGER_ZERO:
 515                         action = trigger_low_;
 516                         break;
 517                 case SR_TRIGGER_ONE:
 518                         action = trigger_high_;
 519                         break;
 520                 case SR_TRIGGER_RISING:
 521                         action = trigger_rising_;
 522                         break;
 523                 case SR_TRIGGER_FALLING:
 524                         action = trigger_falling_;
 525                         break;
 526                 case SR_TRIGGER_EDGE:
 527                         action = trigger_change_;
 528                         break;
 529                 default:
 530                         assert(false);
 531                 }
 532         }
 533
 534         return action;
 535 }
 536
 537 const TriggerMatchType *LogicSignal::trigger_type_from_action(QAction *action)
 538 {
 539         if (action == trigger_low_)
 540                 return TriggerMatchType::ZERO;
 541         else if (action == trigger_high_)
 542                 return TriggerMatchType::ONE;
 543         else if (action == trigger_rising_)
 544                 return TriggerMatchType::RISING;
 545         else if (action == trigger_falling_)
 546                 return TriggerMatchType::FALLING;
 547         else if (action == trigger_change_)
 548                 return TriggerMatchType::EDGE;
 549         else
 550                 return nullptr;
 551 }
 552
 553 void LogicSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
 554 {
 555         Signal::populate_popup_form(parent, form);
 556
 557         signal_height_sb_ = new QSpinBox(parent);
 558         signal_height_sb_->setRange(5, 1000);
 559         signal_height_sb_->setSingleStep(5);
 560         signal_height_sb_->setSuffix(tr(" pixels"));
 561         signal_height_sb_->setValue(signal_height_);
 562         connect(signal_height_sb_, SIGNAL(valueChanged(int)),
 563                 this, SLOT(on_signal_height_changed(int)));
 564         form->addRow(tr("Trace height"), signal_height_sb_);
 565
 566         // Trigger settings
 567         const vector<int32_t> trig_types = get_trigger_types();
 568
 569         if (!trig_types.empty()) {
 570                 trigger_bar_ = new QToolBar(parent);
 571                 init_trigger_actions(trigger_bar_);
 572                 trigger_bar_->addAction(trigger_none_);
 573                 trigger_none_->setChecked(!trigger_match_);
 574
 575                 for (auto type_id : trig_types) {
 576                         const TriggerMatchType *const type =
 577                                 TriggerMatchType::get(type_id);
 578                         QAction *const action = action_from_trigger_type(type);
 579                         trigger_bar_->addAction(action);
 580                         action->setChecked(trigger_match_ == type);
 581                 }
 582
 583                 // Only allow triggers to be changed when we're stopped
 584                 if (session_.get_capture_state() != Session::Stopped)
 585                         for (QAction* action : trigger_bar_->findChildren<QAction*>())
 586                                 action->setEnabled(false);
 587
 588                 form->addRow(tr("Trigger"), trigger_bar_);
 589         }
 590 }
 591
 592 void LogicSignal::modify_trigger()
 593 {
 594         auto trigger = session_.session()->trigger();
 595         auto new_trigger = session_.device_manager().context()->create_trigger("pulseview");
 596
 597         if (trigger) {
 598                 for (auto stage : trigger->stages()) {
 599                         const auto &matches = stage->matches();
 600                         if (none_of(matches.begin(), matches.end(),
 601                             [&](shared_ptr<TriggerMatch> match) {
 602                                         return match->channel() != base_->channel(); }))
 603                                 continue;
 604
 605                         auto new_stage = new_trigger->add_stage();
 606                         for (auto match : stage->matches()) {
 607                                 if (match->channel() == base_->channel())
 608                                         continue;
 609                                 new_stage->add_match(match->channel(), match->type());
 610                         }
 611                 }
 612         }
 613
 614         if (trigger_match_) {
 615                 // Until we can let the user decide how to group trigger matches
 616                 // into stages, put all of the matches into a single stage --
 617                 // most devices only support a single trigger stage.
 618                 if (new_trigger->stages().empty())
 619                         new_trigger->add_stage();
 620
 621                 new_trigger->stages().back()->add_match(base_->channel(),
 622                         trigger_match_);
 623         }
 624
 625         session_.session()->set_trigger(
 626                 new_trigger->stages().empty() ? nullptr : new_trigger);
 627
 628         if (owner_)
 629                 owner_->row_item_appearance_changed(false, true);
 630 }
 631
 632 const QIcon* LogicSignal::get_icon(const char *path)
 633 {
 634         if (!icon_cache_.contains(path)) {
 635                 const QIcon *icon = new QIcon(path);
 636                 icon_cache_.insert(path, icon);
 637         }
 638
 639         return icon_cache_.take(path);
 640 }
 641
 642 const QPixmap* LogicSignal::get_pixmap(const char *path)
 643 {
 644         if (!pixmap_cache_.contains(path)) {
 645                 const QPixmap *pixmap = new QPixmap(path);
 646                 pixmap_cache_.insert(path, pixmap);
 647         }
 648
 649         return pixmap_cache_.take(path);
 650 }
 651
 652 void LogicSignal::on_trigger()
 653 {
 654         QAction *action;
 655
 656         action_from_trigger_type(trigger_match_)->setChecked(false);
 657
 658         action = (QAction *)sender();
 659         action->setChecked(true);
 660         trigger_match_ = trigger_type_from_action(action);
 661
 662         modify_trigger();
 663 }
 664
 665 void LogicSignal::on_signal_height_changed(int height)
 666 {
 667         signal_height_ = height;
 668
 669         if (owner_) {
 670                 // Call order is important, otherwise the lazy event handler won't work
 671                 owner_->extents_changed(false, true);
 672                 owner_->row_item_appearance_changed(false, true);
 673         }
 674 }
 675
 676 } // namespace trace
 677 } // namespace views
 678 } // namespace pv