8396323f4ee05623c3e49d747ef9b44caf47cc15
[pulseview.git] / 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 namespace pv {
61 namespace views {
62 namespace trace {
63
64 const float LogicSignal::Oversampling = 2.0f;
65
66 const QColor LogicSignal::EdgeColor(0x80, 0x80, 0x80);
67 const QColor LogicSignal::HighColor(0x00, 0xC0, 0x00);
68 const QColor LogicSignal::LowColor(0xC0, 0x00, 0x00);
69 const QColor LogicSignal::SamplingPointColor(0x77, 0x77, 0x77);
70
71 const QColor LogicSignal::SignalColors[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::TriggerMarkerBackgroundColor = 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<devices::Device> device,
103         shared_ptr<data::SignalBase> base) :
104         Signal(session, base),
105         device_(device),
106         trigger_types_(get_trigger_types()),
107         trigger_none_(nullptr),
108         trigger_rising_(nullptr),
109         trigger_high_(nullptr),
110         trigger_falling_(nullptr),
111         trigger_low_(nullptr),
112         trigger_change_(nullptr)
113 {
114         shared_ptr<Trigger> trigger;
115
116         base_->set_color(SignalColors[base->index() % countof(SignalColors)]);
117
118         GlobalSettings gs;
119         signal_height_ = gs.value(GlobalSettings::Key_View_DefaultLogicHeight).toInt();
120
121         /* Populate this channel's trigger setting with whatever we
122          * find in the current session trigger, if anything. */
123         trigger_match_ = nullptr;
124         if ((trigger = session_.session()->trigger()))
125                 for (auto stage : trigger->stages())
126                         for (auto match : stage->matches())
127                                 if (match->channel() == base_->channel())
128                                         trigger_match_ = match->type();
129 }
130
131 shared_ptr<pv::data::SignalData> LogicSignal::data() const
132 {
133         return base_->logic_data();
134 }
135
136 shared_ptr<pv::data::Logic> LogicSignal::logic_data() const
137 {
138         return base_->logic_data();
139 }
140
141 void LogicSignal::save_settings(QSettings &settings) const
142 {
143         settings.setValue("trace_height", signal_height_);
144 }
145
146 void LogicSignal::restore_settings(QSettings &settings)
147 {
148         if (settings.contains("trace_height")) {
149                 const int old_height = signal_height_;
150                 signal_height_ = settings.value("trace_height").toInt();
151
152                 if ((signal_height_ != old_height) && owner_) {
153                         // Call order is important, otherwise the lazy event handler won't work
154                         owner_->extents_changed(false, true);
155                         owner_->row_item_appearance_changed(false, true);
156                 }
157         }
158 }
159
160 pair<int, int> LogicSignal::v_extents() const
161 {
162         const int signal_margin =
163                 QFontMetrics(QApplication::font()).height() / 2;
164         return make_pair(-signal_height_ - signal_margin, signal_margin);
165 }
166
167 void LogicSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
168 {
169         QLineF *line;
170
171         vector< pair<int64_t, bool> > edges;
172
173         assert(base_);
174         assert(owner_);
175
176         const int y = get_visual_y();
177
178         if (!base_->enabled())
179                 return;
180
181         const float high_offset = y - signal_height_ + 0.5f;
182         const float low_offset = y + 0.5f;
183
184         shared_ptr<pv::data::LogicSegment> segment = get_logic_segment_to_paint();
185         if (!segment || (segment->get_sample_count() == 0))
186                 return;
187
188         double samplerate = segment->samplerate();
189
190         // Show sample rate as 1Hz when it is unknown
191         if (samplerate == 0.0)
192                 samplerate = 1.0;
193
194         const double pixels_offset = pp.pixels_offset();
195         const pv::util::Timestamp& start_time = segment->start_time();
196         const int64_t last_sample = (int64_t)segment->get_sample_count() - 1;
197         const double samples_per_pixel = samplerate * pp.scale();
198         const double pixels_per_sample = 1 / samples_per_pixel;
199         const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
200         const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
201
202         const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
203                 (int64_t)0), last_sample);
204         const uint64_t end_sample = min(max(ceil(end).convert_to<int64_t>(),
205                 (int64_t)0), last_sample);
206
207         segment->get_subsampled_edges(edges, start_sample, end_sample,
208                 samples_per_pixel / Oversampling, base_->index());
209         assert(edges.size() >= 2);
210
211         // Check whether we need to paint the sampling points
212         GlobalSettings settings;
213         const bool show_sampling_points =
214                 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() &&
215                 (samples_per_pixel < 0.25);
216
217         vector<QRectF> sampling_points;
218         float sampling_point_x = 0.0f;
219         int64_t sampling_point_sample = start_sample;
220         const int w = 2;
221
222         if (show_sampling_points) {
223                 sampling_points.reserve(end_sample - start_sample + 1);
224                 sampling_point_x = (edges.cbegin()->first / samples_per_pixel - pixels_offset) + pp.left();
225         }
226
227         // Paint the edges
228         const unsigned int edge_count = edges.size() - 2;
229         QLineF *const edge_lines = new QLineF[edge_count];
230         line = edge_lines;
231
232         for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
233                 const float x = ((*i).first / samples_per_pixel -
234                         pixels_offset) + pp.left();
235                 *line++ = QLineF(x, high_offset, x, low_offset);
236
237                 if (show_sampling_points)
238                         while (sampling_point_sample < (*i).first) {
239                                 const float y = (*i).second ? low_offset : high_offset;
240                                 sampling_points.emplace_back(
241                                         QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
242                                 sampling_point_sample++;
243                                 sampling_point_x += pixels_per_sample;
244                         };
245         }
246
247         // Calculate the sample points from the last edge to the end of the trace
248         if (show_sampling_points)
249                 while ((uint64_t)sampling_point_sample <= end_sample) {
250                         // Signal changed after the last edge, so the level is inverted
251                         const float y = (edges.cend() - 1)->second ? high_offset : low_offset;
252                         sampling_points.emplace_back(
253                                 QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
254                         sampling_point_sample++;
255                         sampling_point_x += pixels_per_sample;
256                 };
257
258         p.setPen(EdgeColor);
259         p.drawLines(edge_lines, edge_count);
260         delete[] edge_lines;
261
262         // Paint the caps
263         const unsigned int max_cap_line_count = edges.size();
264         QLineF *const cap_lines = new QLineF[max_cap_line_count];
265
266         p.setPen(HighColor);
267         paint_caps(p, cap_lines, edges, true, samples_per_pixel,
268                 pixels_offset, pp.left(), high_offset);
269         p.setPen(LowColor);
270         paint_caps(p, cap_lines, edges, false, samples_per_pixel,
271                 pixels_offset, pp.left(), low_offset);
272
273         delete[] cap_lines;
274
275         // Paint the sampling points
276         if (show_sampling_points) {
277                 p.setPen(SamplingPointColor);
278                 p.drawRects(sampling_points.data(), sampling_points.size());
279         }
280 }
281
282 void LogicSignal::paint_fore(QPainter &p, ViewItemPaintParams &pp)
283 {
284         if (base_->enabled()) {
285                 if (trigger_match_) {
286                         // Draw the trigger marker
287                         const int y = get_visual_y();
288
289                         for (int32_t type_id : trigger_types_) {
290                                 const TriggerMatchType *const type =
291                                         TriggerMatchType::get(type_id);
292                                 if (trigger_match_ != type || type_id < 0 ||
293                                         (size_t)type_id >= countof(TriggerMarkerIcons) ||
294                                         !TriggerMarkerIcons[type_id])
295                                         continue;
296
297                                 const QPixmap *const pixmap = get_pixmap(
298                                         TriggerMarkerIcons[type_id]);
299                                 if (!pixmap)
300                                         continue;
301
302                                 const float pad = TriggerMarkerPadding - 0.5f;
303                                 const QSize size = pixmap->size();
304                                 const QPoint point(
305                                         pp.right() - size.width() - pad * 2,
306                                         y - (signal_height_ + size.height()) / 2);
307
308                                 p.setPen(QPen(TriggerMarkerBackgroundColor.darker()));
309                                 p.setBrush(TriggerMarkerBackgroundColor);
310                                 p.drawRoundedRect(QRectF(point, size).adjusted(
311                                         -pad, -pad, pad, pad), pad, pad);
312                                 p.drawPixmap(point, *pixmap);
313
314                                 break;
315                         }
316                 }
317
318                 if (show_hover_marker_)
319                         paint_hover_marker(p);
320         }
321 }
322
323 void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
324         vector< pair<int64_t, bool> > &edges, bool level,
325         double samples_per_pixel, double pixels_offset, float x_offset,
326         float y_offset)
327 {
328         QLineF *line = lines;
329
330         for (auto i = edges.begin(); i != (edges.end() - 1); i++)
331                 if ((*i).second == level) {
332                         *line++ = QLineF(
333                                 ((*i).first / samples_per_pixel -
334                                         pixels_offset) + x_offset, y_offset,
335                                 ((*(i+1)).first / samples_per_pixel -
336                                         pixels_offset) + x_offset, y_offset);
337                 }
338
339         p.drawLines(lines, line - lines);
340 }
341
342 shared_ptr<pv::data::LogicSegment> LogicSignal::get_logic_segment_to_paint() const
343 {
344         shared_ptr<pv::data::LogicSegment> segment;
345
346         const deque< shared_ptr<pv::data::LogicSegment> > &segments =
347                 base_->logic_data()->logic_segments();
348
349         if (!segments.empty()) {
350                 if (segment_display_mode_ == ShowLastSegmentOnly) {
351                         segment = segments.back();
352                 }
353
354         if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
355                 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
356                         try {
357                                 segment = segments.at(current_segment_);
358                         } catch (out_of_range&) {
359                                 qDebug() << "Current logic segment out of range for signal" << base_->name() << ":" << current_segment_;
360                         }
361                 }
362         }
363
364         return segment;
365 }
366
367 void LogicSignal::init_trigger_actions(QWidget *parent)
368 {
369         trigger_none_ = new QAction(*get_icon(":/icons/trigger-none.svg"),
370                 tr("No trigger"), parent);
371         trigger_none_->setCheckable(true);
372         connect(trigger_none_, SIGNAL(triggered()), this, SLOT(on_trigger()));
373
374         trigger_rising_ = new QAction(*get_icon(":/icons/trigger-rising.svg"),
375                 tr("Trigger on rising edge"), parent);
376         trigger_rising_->setCheckable(true);
377         connect(trigger_rising_, SIGNAL(triggered()), this, SLOT(on_trigger()));
378
379         trigger_high_ = new QAction(*get_icon(":/icons/trigger-high.svg"),
380                 tr("Trigger on high level"), parent);
381         trigger_high_->setCheckable(true);
382         connect(trigger_high_, SIGNAL(triggered()), this, SLOT(on_trigger()));
383
384         trigger_falling_ = new QAction(*get_icon(":/icons/trigger-falling.svg"),
385                 tr("Trigger on falling edge"), parent);
386         trigger_falling_->setCheckable(true);
387         connect(trigger_falling_, SIGNAL(triggered()), this, SLOT(on_trigger()));
388
389         trigger_low_ = new QAction(*get_icon(":/icons/trigger-low.svg"),
390                 tr("Trigger on low level"), parent);
391         trigger_low_->setCheckable(true);
392         connect(trigger_low_, SIGNAL(triggered()), this, SLOT(on_trigger()));
393
394         trigger_change_ = new QAction(*get_icon(":/icons/trigger-change.svg"),
395                 tr("Trigger on rising or falling edge"), parent);
396         trigger_change_->setCheckable(true);
397         connect(trigger_change_, SIGNAL(triggered()), this, SLOT(on_trigger()));
398 }
399
400 const vector<int32_t> LogicSignal::get_trigger_types() const
401 {
402         // We may not be associated with a device
403         if (!device_)
404                 return vector<int32_t>();
405
406         const auto sr_dev = device_->device();
407         if (sr_dev->config_check(ConfigKey::TRIGGER_MATCH, Capability::LIST)) {
408                 const Glib::VariantContainerBase gvar =
409                         sr_dev->config_list(ConfigKey::TRIGGER_MATCH);
410
411                 vector<int32_t> ttypes;
412
413                 for (unsigned int i = 0; i < gvar.get_n_children(); i++) {
414                         Glib::VariantBase tmp_vb;
415                         gvar.get_child(tmp_vb, i);
416
417                         Glib::Variant<int32_t> tmp_v =
418                                 Glib::VariantBase::cast_dynamic< Glib::Variant<int32_t> >(tmp_vb);
419
420                         ttypes.push_back(tmp_v.get());
421                 }
422
423                 return ttypes;
424         } else {
425                 return vector<int32_t>();
426         }
427 }
428
429 QAction* LogicSignal::action_from_trigger_type(const TriggerMatchType *type)
430 {
431         QAction *action;
432
433         action = trigger_none_;
434         if (type) {
435                 switch (type->id()) {
436                 case SR_TRIGGER_ZERO:
437                         action = trigger_low_;
438                         break;
439                 case SR_TRIGGER_ONE:
440                         action = trigger_high_;
441                         break;
442                 case SR_TRIGGER_RISING:
443                         action = trigger_rising_;
444                         break;
445                 case SR_TRIGGER_FALLING:
446                         action = trigger_falling_;
447                         break;
448                 case SR_TRIGGER_EDGE:
449                         action = trigger_change_;
450                         break;
451                 default:
452                         assert(false);
453                 }
454         }
455
456         return action;
457 }
458
459 const TriggerMatchType *LogicSignal::trigger_type_from_action(QAction *action)
460 {
461         if (action == trigger_low_)
462                 return TriggerMatchType::ZERO;
463         else if (action == trigger_high_)
464                 return TriggerMatchType::ONE;
465         else if (action == trigger_rising_)
466                 return TriggerMatchType::RISING;
467         else if (action == trigger_falling_)
468                 return TriggerMatchType::FALLING;
469         else if (action == trigger_change_)
470                 return TriggerMatchType::EDGE;
471         else
472                 return nullptr;
473 }
474
475 void LogicSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
476 {
477         Signal::populate_popup_form(parent, form);
478
479         signal_height_sb_ = new QSpinBox(parent);
480         signal_height_sb_->setRange(5, 1000);
481         signal_height_sb_->setSingleStep(5);
482         signal_height_sb_->setSuffix(tr(" pixels"));
483         signal_height_sb_->setValue(signal_height_);
484         connect(signal_height_sb_, SIGNAL(valueChanged(int)),
485                 this, SLOT(on_signal_height_changed(int)));
486         form->addRow(tr("Trace height"), signal_height_sb_);
487
488         // Trigger settings
489         const vector<int32_t> trig_types = get_trigger_types();
490
491         if (!trig_types.empty()) {
492                 trigger_bar_ = new QToolBar(parent);
493                 init_trigger_actions(trigger_bar_);
494                 trigger_bar_->addAction(trigger_none_);
495                 trigger_none_->setChecked(!trigger_match_);
496
497                 for (auto type_id : trig_types) {
498                         const TriggerMatchType *const type =
499                                 TriggerMatchType::get(type_id);
500                         QAction *const action = action_from_trigger_type(type);
501                         trigger_bar_->addAction(action);
502                         action->setChecked(trigger_match_ == type);
503                 }
504
505                 // Only allow triggers to be changed when we're stopped
506                 if (session_.get_capture_state() != Session::Stopped)
507                         for (QAction* action : trigger_bar_->findChildren<QAction*>())
508                                 action->setEnabled(false);
509
510                 form->addRow(tr("Trigger"), trigger_bar_);
511         }
512 }
513
514 void LogicSignal::modify_trigger()
515 {
516         auto trigger = session_.session()->trigger();
517         auto new_trigger = session_.device_manager().context()->create_trigger("pulseview");
518
519         if (trigger) {
520                 for (auto stage : trigger->stages()) {
521                         const auto &matches = stage->matches();
522                         if (none_of(matches.begin(), matches.end(),
523                             [&](shared_ptr<TriggerMatch> match) {
524                                         return match->channel() != base_->channel(); }))
525                                 continue;
526
527                         auto new_stage = new_trigger->add_stage();
528                         for (auto match : stage->matches()) {
529                                 if (match->channel() == base_->channel())
530                                         continue;
531                                 new_stage->add_match(match->channel(), match->type());
532                         }
533                 }
534         }
535
536         if (trigger_match_) {
537                 // Until we can let the user decide how to group trigger matches
538                 // into stages, put all of the matches into a single stage --
539                 // most devices only support a single trigger stage.
540                 if (new_trigger->stages().empty())
541                         new_trigger->add_stage();
542
543                 new_trigger->stages().back()->add_match(base_->channel(),
544                         trigger_match_);
545         }
546
547         session_.session()->set_trigger(
548                 new_trigger->stages().empty() ? nullptr : new_trigger);
549
550         if (owner_)
551                 owner_->row_item_appearance_changed(false, true);
552 }
553
554 const QIcon* LogicSignal::get_icon(const char *path)
555 {
556         if (!icon_cache_.contains(path)) {
557                 const QIcon *icon = new QIcon(path);
558                 icon_cache_.insert(path, icon);
559         }
560
561         return icon_cache_.take(path);
562 }
563
564 const QPixmap* LogicSignal::get_pixmap(const char *path)
565 {
566         if (!pixmap_cache_.contains(path)) {
567                 const QPixmap *pixmap = new QPixmap(path);
568                 pixmap_cache_.insert(path, pixmap);
569         }
570
571         return pixmap_cache_.take(path);
572 }
573
574 void LogicSignal::on_trigger()
575 {
576         QAction *action;
577
578         action_from_trigger_type(trigger_match_)->setChecked(false);
579
580         action = (QAction *)sender();
581         action->setChecked(true);
582         trigger_match_ = trigger_type_from_action(action);
583
584         modify_trigger();
585 }
586
587 void LogicSignal::on_signal_height_changed(int height)
588 {
589         signal_height_ = height;
590
591         if (owner_) {
592                 // Call order is important, otherwise the lazy event handler won't work
593                 owner_->extents_changed(false, true);
594                 owner_->row_item_appearance_changed(false, true);
595         }
596 }
597
598 } // namespace trace
599 } // namespace views
600 } // namespace pv