pv/view/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, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  */
  20
  21 #include <extdef.h>
  22
  23 #include <cassert>
  24 #include <cmath>
  25
  26 #include <algorithm>
  27
  28 #include <QFormLayout>
  29 #include <QToolBar>
  30
  31 #include "logicsignal.hpp"
  32 #include "view.hpp"
  33
  34 #include <pv/sigsession.hpp>
  35 #include <pv/devicemanager.hpp>
  36 #include <pv/data/logic.hpp>
  37 #include <pv/data/logicsnapshot.hpp>
  38 #include <pv/view/view.hpp>
  39
  40 #include <libsigrok/libsigrok.hpp>
  41
  42 using std::deque;
  43 using std::max;
  44 using std::make_pair;
  45 using std::min;
  46 using std::pair;
  47 using std::shared_ptr;
  48 using std::vector;
  49
  50 using sigrok::Channel;
  51 using sigrok::ConfigKey;
  52 using sigrok::Device;
  53 using sigrok::Error;
  54 using sigrok::Trigger;
  55 using sigrok::TriggerStage;
  56 using sigrok::TriggerMatch;
  57 using sigrok::TriggerMatchType;
  58
  59 namespace pv {
  60 namespace view {
  61
  62 const int LogicSignal::SignalHeight = 30;
  63 const int LogicSignal::SignalMargin = 10;
  64
  65 const float LogicSignal::Oversampling = 2.0f;
  66
  67 const QColor LogicSignal::EdgeColour(0x80, 0x80, 0x80);
  68 const QColor LogicSignal::HighColour(0x00, 0xC0, 0x00);
  69 const QColor LogicSignal::LowColour(0xC0, 0x00, 0x00);
  70
  71 const QColor LogicSignal::SignalColours[10] = {
  72         QColor(0x16, 0x19, 0x1A),       // Black
  73         QColor(0x8F, 0x52, 0x02),       // Brown
  74         QColor(0xCC, 0x00, 0x00),       // Red
  75         QColor(0xF5, 0x79, 0x00),       // Orange
  76         QColor(0xED, 0xD4, 0x00),       // Yellow
  77         QColor(0x73, 0xD2, 0x16),       // Green
  78         QColor(0x34, 0x65, 0xA4),       // Blue
  79         QColor(0x75, 0x50, 0x7B),       // Violet
  80         QColor(0x88, 0x8A, 0x85),       // Grey
  81         QColor(0xEE, 0xEE, 0xEC),       // White
  82 };
  83
  84 QColor LogicSignal::TriggerMarkerBackgroundColour = QColor(0xED, 0xD4, 0x00);
  85 const int LogicSignal::TriggerMarkerPadding = 2;
  86 const char* LogicSignal::TriggerMarkerIcons[8] = {
  87         nullptr,
  88         ":/icons/trigger-marker-low.svg",
  89         ":/icons/trigger-marker-high.svg",
  90         ":/icons/trigger-marker-rising.svg",
  91         ":/icons/trigger-marker-falling.svg",
  92         ":/icons/trigger-marker-change.svg",
  93         nullptr,
  94         nullptr
  95 };
  96
  97 QCache<QString, const QIcon> LogicSignal::icon_cache_;
  98 QCache<QString, const QPixmap> LogicSignal::pixmap_cache_;
  99
 100 LogicSignal::LogicSignal(
 101         pv::Session &session,
 102         shared_ptr<Device> device,
 103         shared_ptr<Channel> channel,
 104         shared_ptr<data::Logic> data) :
 105         Signal(session, channel),
 106         device_(device),
 107         data_(data),
 108         trigger_none_(NULL),
 109         trigger_rising_(NULL),
 110         trigger_high_(NULL),
 111         trigger_falling_(NULL),
 112         trigger_low_(NULL),
 113         trigger_change_(NULL)
 114 {
 115         shared_ptr<Trigger> trigger;
 116
 117         colour_ = SignalColours[channel->index() % countof(SignalColours)];
 118
 119         /* Populate this channel's trigger setting with whatever we
 120          * find in the current session trigger, if anything. */
 121         trigger_match_ = nullptr;
 122         if ((trigger = session_.session()->trigger()))
 123                 for (auto stage : trigger->stages())
 124                         for (auto match : stage->matches())
 125                                 if (match->channel() == channel_)
 126                                         trigger_match_ = match->type();
 127 }
 128
 129 LogicSignal::~LogicSignal()
 130 {
 131 }
 132
 133 shared_ptr<pv::data::SignalData> LogicSignal::data() const
 134 {
 135         return data_;
 136 }
 137
 138 shared_ptr<pv::data::Logic> LogicSignal::logic_data() const
 139 {
 140         return data_;
 141 }
 142
 143 std::pair<int, int> LogicSignal::v_extents() const
 144 {
 145         return make_pair(-SignalHeight - SignalMargin, SignalMargin);
 146 }
 147
 148 void LogicSignal::paint_back(QPainter &p, int left, int right)
 149 {
 150         if (channel_->enabled())
 151                 paint_axis(p, get_visual_y(), left, right);
 152 }
 153
 154 void LogicSignal::paint_mid(QPainter &p, int left, int right)
 155 {
 156         using pv::view::View;
 157
 158         QLineF *line;
 159
 160         vector< pair<int64_t, bool> > edges;
 161
 162         assert(channel_);
 163         assert(data_);
 164         assert(right >= left);
 165         assert(owner_);
 166
 167         const int y = get_visual_y();
 168
 169         const View *const view = owner_->view();
 170         assert(view);
 171
 172         const double scale = view->scale();
 173         assert(scale > 0);
 174
 175         const double offset = view->offset();
 176
 177         if (!channel_->enabled())
 178                 return;
 179
 180         const float high_offset = y - SignalHeight + 0.5f;
 181         const float low_offset = y + 0.5f;
 182
 183         const deque< shared_ptr<pv::data::LogicSnapshot> > &snapshots =
 184                 data_->get_snapshots();
 185         if (snapshots.empty())
 186                 return;
 187
 188         const shared_ptr<pv::data::LogicSnapshot> &snapshot =
 189                 snapshots.front();
 190
 191         double samplerate = data_->samplerate();
 192
 193         // Show sample rate as 1Hz when it is unknown
 194         if (samplerate == 0.0)
 195                 samplerate = 1.0;
 196
 197         const double pixels_offset = offset / scale;
 198         const double start_time = data_->get_start_time();
 199         const int64_t last_sample = snapshot->get_sample_count() - 1;
 200         const double samples_per_pixel = samplerate * scale;
 201         const double start = samplerate * (offset - start_time);
 202         const double end = start + samples_per_pixel * (right - left);
 203
 204         snapshot->get_subsampled_edges(edges,
 205                 min(max((int64_t)floor(start), (int64_t)0), last_sample),
 206                 min(max((int64_t)ceil(end), (int64_t)0), last_sample),
 207                 samples_per_pixel / Oversampling, channel_->index());
 208         assert(edges.size() >= 2);
 209
 210         // Paint the edges
 211         const unsigned int edge_count = edges.size() - 2;
 212         QLineF *const edge_lines = new QLineF[edge_count];
 213         line = edge_lines;
 214
 215         for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
 216                 const float x = ((*i).first / samples_per_pixel -
 217                         pixels_offset) + left;
 218                 *line++ = QLineF(x, high_offset, x, low_offset);
 219         }
 220
 221         p.setPen(EdgeColour);
 222         p.drawLines(edge_lines, edge_count);
 223         delete[] edge_lines;
 224
 225         // Paint the caps
 226         const unsigned int max_cap_line_count = edges.size();
 227         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 228
 229         p.setPen(HighColour);
 230         paint_caps(p, cap_lines, edges, true, samples_per_pixel,
 231                 pixels_offset, left, high_offset);
 232         p.setPen(LowColour);
 233         paint_caps(p, cap_lines, edges, false, samples_per_pixel,
 234                 pixels_offset, left, low_offset);
 235
 236         delete[] cap_lines;
 237 }
 238
 239 void LogicSignal::paint_fore(QPainter &p, int left, int right)
 240 {
 241         (void)left;
 242
 243         // Draw the trigger marker
 244         if (!trigger_match_)
 245                 return;
 246
 247         const int y = get_visual_y();
 248         const vector<int32_t> trig_types = get_trigger_types();
 249         for (int32_t type_id : trig_types) {
 250                 const TriggerMatchType *const type =
 251                         TriggerMatchType::get(type_id);
 252                 if (trigger_match_ != type || type_id < 0 ||
 253                         (size_t)type_id >= countof(TriggerMarkerIcons) ||
 254                         !TriggerMarkerIcons[type_id])
 255                         continue;
 256
 257                 const QPixmap *const pixmap = get_pixmap(
 258                         TriggerMarkerIcons[type_id]);
 259                 if (!pixmap)
 260                         continue;
 261
 262                 const int pad = TriggerMarkerPadding;
 263                 const QSize size = pixmap->size();
 264                 const QPoint point(
 265                         right - size.width() - pad * 2,
 266                         y - (SignalHeight + size.height()) / 2);
 267
 268                 p.setPen(QPen(Qt::NoPen));
 269                 p.setBrush(TriggerMarkerBackgroundColour);
 270                 p.drawRoundedRect(QRect(point, size).adjusted(
 271                         -pad, -pad, pad, pad), pad, pad);
 272                 p.drawPixmap(point, *pixmap);
 273
 274                 break;
 275         }
 276 }
 277
 278 void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
 279         vector< pair<int64_t, bool> > &edges, bool level,
 280         double samples_per_pixel, double pixels_offset, float x_offset,
 281         float y_offset)
 282 {
 283         QLineF *line = lines;
 284
 285         for (auto i = edges.begin(); i != (edges.end() - 1); i++)
 286                 if ((*i).second == level) {
 287                         *line++ = QLineF(
 288                                 ((*i).first / samples_per_pixel -
 289                                         pixels_offset) + x_offset, y_offset,
 290                                 ((*(i+1)).first / samples_per_pixel -
 291                                         pixels_offset) + x_offset, y_offset);
 292                 }
 293
 294         p.drawLines(lines, line - lines);
 295 }
 296
 297 void LogicSignal::init_trigger_actions(QWidget *parent)
 298 {
 299         trigger_none_ = new QAction(*get_icon(":/icons/trigger-none.svg"),
 300                 tr("No trigger"), parent);
 301         trigger_none_->setCheckable(true);
 302         connect(trigger_none_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 303
 304         trigger_rising_ = new QAction(*get_icon(":/icons/trigger-rising.svg"),
 305                 tr("Trigger on rising edge"), parent);
 306         trigger_rising_->setCheckable(true);
 307         connect(trigger_rising_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 308
 309         trigger_high_ = new QAction(*get_icon(":/icons/trigger-high.svg"),
 310                 tr("Trigger on high level"), parent);
 311         trigger_high_->setCheckable(true);
 312         connect(trigger_high_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 313
 314         trigger_falling_ = new QAction(*get_icon(":/icons/trigger-falling.svg"),
 315                 tr("Trigger on falling edge"), parent);
 316         trigger_falling_->setCheckable(true);
 317         connect(trigger_falling_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 318
 319         trigger_low_ = new QAction(*get_icon(":/icons/trigger-low.svg"),
 320                 tr("Trigger on low level"), parent);
 321         trigger_low_->setCheckable(true);
 322         connect(trigger_low_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 323
 324         trigger_change_ = new QAction(*get_icon(":/icons/trigger-change.svg"),
 325                 tr("Trigger on rising or falling edge"), parent);
 326         trigger_change_->setCheckable(true);
 327         connect(trigger_change_, SIGNAL(triggered()), this, SLOT(on_trigger()));
 328 }
 329
 330 const vector<int32_t> LogicSignal::get_trigger_types() const
 331 {
 332         try {
 333                 const Glib::VariantContainerBase gvar =
 334                         device_->config_list(ConfigKey::TRIGGER_MATCH);
 335                 return Glib::VariantBase::cast_dynamic<
 336                         Glib::Variant<vector<int32_t>>>(gvar).get();
 337         } catch (Error e) {
 338                 return vector<int32_t>();
 339         }
 340 }
 341
 342 QAction* LogicSignal::action_from_trigger_type(const TriggerMatchType *type)
 343 {
 344         QAction *action;
 345
 346         action = trigger_none_;
 347         if (type) {
 348                 switch (type->id()) {
 349                 case SR_TRIGGER_ZERO:
 350                         action = trigger_low_;
 351                         break;
 352                 case SR_TRIGGER_ONE:
 353                         action = trigger_high_;
 354                         break;
 355                 case SR_TRIGGER_RISING:
 356                         action = trigger_rising_;
 357                         break;
 358                 case SR_TRIGGER_FALLING:
 359                         action = trigger_falling_;
 360                         break;
 361                 case SR_TRIGGER_EDGE:
 362                         action = trigger_change_;
 363                         break;
 364                 default:
 365                         assert(0);
 366                 }
 367         }
 368
 369         return action;
 370 }
 371
 372 const TriggerMatchType *LogicSignal::trigger_type_from_action(QAction *action)
 373 {
 374         if (action == trigger_low_)
 375                 return TriggerMatchType::ZERO;
 376         else if (action == trigger_high_)
 377                 return TriggerMatchType::ONE;
 378         else if (action == trigger_rising_)
 379                 return TriggerMatchType::RISING;
 380         else if (action == trigger_falling_)
 381                 return TriggerMatchType::FALLING;
 382         else if (action == trigger_change_)
 383                 return TriggerMatchType::EDGE;
 384         else
 385                 return nullptr;
 386 }
 387
 388 void LogicSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
 389 {
 390         Signal::populate_popup_form(parent, form);
 391
 392         trigger_bar_ = new QToolBar(parent);
 393         init_trigger_actions(trigger_bar_);
 394         trigger_bar_->addAction(trigger_none_);
 395         trigger_none_->setChecked(!trigger_match_);
 396
 397         const vector<int32_t> trig_types = get_trigger_types();
 398         for (auto type_id : trig_types) {
 399                 const TriggerMatchType *const type =
 400                         TriggerMatchType::get(type_id);
 401                 QAction *const action = action_from_trigger_type(type);
 402                 trigger_bar_->addAction(action);
 403                 action->setChecked(trigger_match_ == type);
 404         }
 405         form->addRow(tr("Trigger"), trigger_bar_);
 406
 407 }
 408
 409 void LogicSignal::modify_trigger()
 410 {
 411         auto trigger = session_.session()->trigger();
 412         auto new_trigger = session_.device_manager().context()->create_trigger("pulseview");
 413
 414         if (trigger) {
 415                 for (auto stage : trigger->stages()) {
 416                         const auto &matches = stage->matches();
 417                         if (std::none_of(begin(matches), end(matches),
 418                             [&](shared_ptr<TriggerMatch> match) {
 419                                         return match->channel() != channel_; }))
 420                                 continue;
 421
 422                         auto new_stage = new_trigger->add_stage();
 423                         for (auto match : stage->matches()) {
 424                                 if (match->channel() == channel_)
 425                                         continue;
 426                                 new_stage->add_match(match->channel(), match->type());
 427                         }
 428                 }
 429         }
 430
 431         if (trigger_match_)
 432                 new_trigger->add_stage()->add_match(channel_, trigger_match_);
 433
 434         session_.session()->set_trigger(
 435                 new_trigger->stages().empty() ? nullptr : new_trigger);
 436
 437         if (owner_)
 438                 owner_->appearance_changed(false, true);
 439 }
 440
 441 const QIcon* LogicSignal::get_icon(const char *path)
 442 {
 443         const QIcon *icon = icon_cache_.take(path);
 444         if (!icon) {
 445                 icon = new QIcon(path);
 446                 icon_cache_.insert(path, icon);
 447         }
 448
 449         return icon;
 450 }
 451
 452 const QPixmap* LogicSignal::get_pixmap(const char *path)
 453 {
 454         const QPixmap *pixmap = pixmap_cache_.take(path);
 455         if (!pixmap) {
 456                 pixmap = new QPixmap(path);
 457                 pixmap_cache_.insert(path, pixmap);
 458         }
 459
 460         return pixmap;
 461 }
 462
 463 void LogicSignal::on_trigger()
 464 {
 465         QAction *action;
 466
 467         action_from_trigger_type(trigger_match_)->setChecked(false);
 468
 469         action = (QAction *)sender();
 470         action->setChecked(true);
 471         trigger_match_ = trigger_type_from_action(action);
 472
 473         modify_trigger();
 474 }
 475
 476 } // namespace view
 477 } // namespace pv