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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 | #ifdef ENABLE_DECODE | |
22 | #include <libsigrokdecode/libsigrokdecode.h> | |
23 | #endif | |
24 | ||
25 | #include <extdef.h> | |
26 | ||
27 | #include <algorithm> | |
28 | #include <cassert> | |
29 | #include <climits> | |
30 | #include <cmath> | |
31 | #include <iterator> | |
32 | #include <mutex> | |
33 | #include <unordered_set> | |
34 | ||
35 | #include <QApplication> | |
36 | #include <QEvent> | |
37 | #include <QFontMetrics> | |
38 | #include <QMouseEvent> | |
39 | #include <QScrollBar> | |
40 | ||
41 | #include <libsigrokcxx/libsigrokcxx.hpp> | |
42 | ||
43 | #include "decodetrace.hpp" | |
44 | #include "header.hpp" | |
45 | #include "logicsignal.hpp" | |
46 | #include "ruler.hpp" | |
47 | #include "signal.hpp" | |
48 | #include "tracegroup.hpp" | |
49 | #include "view.hpp" | |
50 | #include "viewport.hpp" | |
51 | ||
52 | #include "pv/session.hpp" | |
53 | #include "pv/devices/device.hpp" | |
54 | #include "pv/data/logic.hpp" | |
55 | #include "pv/data/logicsegment.hpp" | |
56 | #include "pv/util.hpp" | |
57 | ||
58 | using boost::shared_lock; | |
59 | using boost::shared_mutex; | |
60 | ||
61 | using pv::data::SignalData; | |
62 | using pv::data::Segment; | |
63 | using pv::util::format_time; | |
64 | using pv::util::TimeUnit; | |
65 | ||
66 | using std::deque; | |
67 | using std::dynamic_pointer_cast; | |
68 | using std::inserter; | |
69 | using std::list; | |
70 | using std::lock_guard; | |
71 | using std::max; | |
72 | using std::make_pair; | |
73 | using std::min; | |
74 | using std::pair; | |
75 | using std::set; | |
76 | using std::set_difference; | |
77 | using std::shared_ptr; | |
78 | using std::unordered_map; | |
79 | using std::unordered_set; | |
80 | using std::vector; | |
81 | using std::weak_ptr; | |
82 | ||
83 | namespace pv { | |
84 | namespace view { | |
85 | ||
86 | const double View::MaxScale = 1e9; | |
87 | const double View::MinScale = 1e-15; | |
88 | ||
89 | const int View::MaxScrollValue = INT_MAX / 2; | |
90 | const int View::MaxViewAutoUpdateRate = 25; // No more than 25 Hz with sticky scrolling | |
91 | ||
92 | const int View::ScaleUnits[3] = {1, 2, 5}; | |
93 | ||
94 | View::View(Session &session, QWidget *parent) : | |
95 | QAbstractScrollArea(parent), | |
96 | session_(session), | |
97 | viewport_(new Viewport(*this)), | |
98 | ruler_(new Ruler(*this)), | |
99 | header_(new Header(*this)), | |
100 | scale_(1e-3), | |
101 | offset_(0), | |
102 | updating_scroll_(false), | |
103 | sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui() | |
104 | always_zoom_to_fit_(false), | |
105 | tick_period_(0.0), | |
106 | tick_prefix_(0), | |
107 | time_unit_(util::Time), | |
108 | show_cursors_(false), | |
109 | cursors_(new CursorPair(*this)), | |
110 | next_flag_text_('A'), | |
111 | hover_point_(-1, -1) | |
112 | { | |
113 | connect(horizontalScrollBar(), SIGNAL(valueChanged(int)), | |
114 | this, SLOT(h_scroll_value_changed(int))); | |
115 | connect(verticalScrollBar(), SIGNAL(valueChanged(int)), | |
116 | this, SLOT(v_scroll_value_changed())); | |
117 | ||
118 | connect(&session_, SIGNAL(signals_changed()), | |
119 | this, SLOT(signals_changed())); | |
120 | connect(&session_, SIGNAL(capture_state_changed(int)), | |
121 | this, SLOT(capture_state_updated(int))); | |
122 | connect(&session_, SIGNAL(data_received()), | |
123 | this, SLOT(data_updated())); | |
124 | connect(&session_, SIGNAL(frame_ended()), | |
125 | this, SLOT(data_updated())); | |
126 | ||
127 | connect(header_, SIGNAL(selection_changed()), | |
128 | ruler_, SLOT(clear_selection())); | |
129 | connect(ruler_, SIGNAL(selection_changed()), | |
130 | header_, SLOT(clear_selection())); | |
131 | ||
132 | connect(header_, SIGNAL(selection_changed()), | |
133 | this, SIGNAL(selection_changed())); | |
134 | connect(ruler_, SIGNAL(selection_changed()), | |
135 | this, SIGNAL(selection_changed())); | |
136 | ||
137 | connect(this, SIGNAL(hover_point_changed()), | |
138 | this, SLOT(on_hover_point_changed())); | |
139 | ||
140 | connect(&lazy_event_handler_, SIGNAL(timeout()), | |
141 | this, SLOT(process_sticky_events())); | |
142 | lazy_event_handler_.setSingleShot(true); | |
143 | ||
144 | connect(&delayed_view_updater_, SIGNAL(timeout()), | |
145 | this, SLOT(perform_delayed_view_update())); | |
146 | delayed_view_updater_.setSingleShot(true); | |
147 | delayed_view_updater_.setInterval(1000 / MaxViewAutoUpdateRate); | |
148 | ||
149 | setViewport(viewport_); | |
150 | ||
151 | viewport_->installEventFilter(this); | |
152 | ruler_->installEventFilter(this); | |
153 | header_->installEventFilter(this); | |
154 | ||
155 | // Trigger the initial event manually. The default device has signals | |
156 | // which were created before this object came into being | |
157 | signals_changed(); | |
158 | ||
159 | // make sure the transparent widgets are on the top | |
160 | ruler_->raise(); | |
161 | header_->raise(); | |
162 | ||
163 | // Update the zoom state | |
164 | calculate_tick_spacing(); | |
165 | } | |
166 | ||
167 | Session& View::session() | |
168 | { | |
169 | return session_; | |
170 | } | |
171 | ||
172 | const Session& View::session() const | |
173 | { | |
174 | return session_; | |
175 | } | |
176 | ||
177 | View* View::view() | |
178 | { | |
179 | return this; | |
180 | } | |
181 | ||
182 | const View* View::view() const | |
183 | { | |
184 | return this; | |
185 | } | |
186 | ||
187 | Viewport* View::viewport() | |
188 | { | |
189 | return viewport_; | |
190 | } | |
191 | ||
192 | const Viewport* View::viewport() const | |
193 | { | |
194 | return viewport_; | |
195 | } | |
196 | ||
197 | vector< shared_ptr<TimeItem> > View::time_items() const | |
198 | { | |
199 | const vector<shared_ptr<Flag>> f(flags()); | |
200 | vector<shared_ptr<TimeItem>> items(f.begin(), f.end()); | |
201 | items.push_back(cursors_); | |
202 | items.push_back(cursors_->first()); | |
203 | items.push_back(cursors_->second()); | |
204 | return items; | |
205 | } | |
206 | ||
207 | double View::scale() const | |
208 | { | |
209 | return scale_; | |
210 | } | |
211 | ||
212 | double View::offset() const | |
213 | { | |
214 | return offset_; | |
215 | } | |
216 | ||
217 | int View::owner_visual_v_offset() const | |
218 | { | |
219 | return -verticalScrollBar()->sliderPosition(); | |
220 | } | |
221 | ||
222 | void View::set_v_offset(int offset) | |
223 | { | |
224 | verticalScrollBar()->setSliderPosition(offset); | |
225 | header_->update(); | |
226 | viewport_->update(); | |
227 | } | |
228 | ||
229 | unsigned int View::depth() const | |
230 | { | |
231 | return 0; | |
232 | } | |
233 | ||
234 | unsigned int View::tick_prefix() const | |
235 | { | |
236 | return tick_prefix_; | |
237 | } | |
238 | ||
239 | double View::tick_period() const | |
240 | { | |
241 | return tick_period_; | |
242 | } | |
243 | ||
244 | TimeUnit View::time_unit() const | |
245 | { | |
246 | return time_unit_; | |
247 | } | |
248 | ||
249 | void View::zoom(double steps) | |
250 | { | |
251 | zoom(steps, viewport_->width() / 2); | |
252 | } | |
253 | ||
254 | void View::zoom(double steps, int offset) | |
255 | { | |
256 | set_zoom(scale_ * pow(3.0/2.0, -steps), offset); | |
257 | } | |
258 | ||
259 | void View::zoom_fit(bool gui_state) | |
260 | { | |
261 | // Act as one-shot when stopped, toggle along with the GUI otherwise | |
262 | if (session_.get_capture_state() == Session::Stopped) { | |
263 | always_zoom_to_fit_ = false; | |
264 | always_zoom_to_fit_changed(false); | |
265 | } else { | |
266 | always_zoom_to_fit_ = gui_state; | |
267 | always_zoom_to_fit_changed(gui_state); | |
268 | } | |
269 | ||
270 | const pair<double, double> extents = get_time_extents(); | |
271 | const double delta = extents.second - extents.first; | |
272 | if (delta < 1e-12) | |
273 | return; | |
274 | ||
275 | assert(viewport_); | |
276 | const int w = viewport_->width(); | |
277 | if (w <= 0) | |
278 | return; | |
279 | ||
280 | const double scale = max(min(delta / w, MaxScale), MinScale); | |
281 | set_scale_offset(scale, extents.first); | |
282 | } | |
283 | ||
284 | void View::zoom_one_to_one() | |
285 | { | |
286 | using pv::data::SignalData; | |
287 | ||
288 | // Make a set of all the visible data objects | |
289 | set< shared_ptr<SignalData> > visible_data = get_visible_data(); | |
290 | if (visible_data.empty()) | |
291 | return; | |
292 | ||
293 | double samplerate = 0.0; | |
294 | for (const shared_ptr<SignalData> d : visible_data) { | |
295 | assert(d); | |
296 | const vector< shared_ptr<Segment> > segments = | |
297 | d->segments(); | |
298 | for (const shared_ptr<Segment> &s : segments) | |
299 | samplerate = max(samplerate, s->samplerate()); | |
300 | } | |
301 | ||
302 | if (samplerate == 0.0) | |
303 | return; | |
304 | ||
305 | assert(viewport_); | |
306 | const int w = viewport_->width(); | |
307 | if (w <= 0) | |
308 | return; | |
309 | ||
310 | set_zoom(1.0 / samplerate, w / 2); | |
311 | } | |
312 | ||
313 | void View::set_scale_offset(double scale, double offset) | |
314 | { | |
315 | // Disable sticky scrolling / always zoom to fit when acquisition runs | |
316 | // and user drags the viewport | |
317 | if ((scale_ == scale) && (offset_ != offset) && | |
318 | (session_.get_capture_state() == Session::Running)) { | |
319 | ||
320 | if (sticky_scrolling_) { | |
321 | sticky_scrolling_ = false; | |
322 | sticky_scrolling_changed(false); | |
323 | } | |
324 | ||
325 | if (always_zoom_to_fit_) { | |
326 | always_zoom_to_fit_ = false; | |
327 | always_zoom_to_fit_changed(false); | |
328 | } | |
329 | } | |
330 | ||
331 | scale_ = scale; | |
332 | offset_ = offset; | |
333 | ||
334 | calculate_tick_spacing(); | |
335 | ||
336 | update_scroll(); | |
337 | ruler_->update(); | |
338 | viewport_->update(); | |
339 | scale_offset_changed(); | |
340 | } | |
341 | ||
342 | set< shared_ptr<SignalData> > View::get_visible_data() const | |
343 | { | |
344 | shared_lock<shared_mutex> lock(session().signals_mutex()); | |
345 | const unordered_set< shared_ptr<Signal> > &sigs(session().signals()); | |
346 | ||
347 | // Make a set of all the visible data objects | |
348 | set< shared_ptr<SignalData> > visible_data; | |
349 | for (const shared_ptr<Signal> sig : sigs) | |
350 | if (sig->enabled()) | |
351 | visible_data.insert(sig->data()); | |
352 | ||
353 | return visible_data; | |
354 | } | |
355 | ||
356 | pair<double, double> View::get_time_extents() const | |
357 | { | |
358 | double left_time = DBL_MAX, right_time = DBL_MIN; | |
359 | const set< shared_ptr<SignalData> > visible_data = get_visible_data(); | |
360 | for (const shared_ptr<SignalData> d : visible_data) | |
361 | { | |
362 | const vector< shared_ptr<Segment> > segments = | |
363 | d->segments(); | |
364 | for (const shared_ptr<Segment> &s : segments) { | |
365 | double samplerate = s->samplerate(); | |
366 | samplerate = (samplerate <= 0.0) ? 1.0 : samplerate; | |
367 | ||
368 | const double start_time = s->start_time(); | |
369 | left_time = min(left_time, start_time); | |
370 | right_time = max(right_time, start_time + | |
371 | d->max_sample_count() / samplerate); | |
372 | } | |
373 | } | |
374 | ||
375 | if (left_time == DBL_MAX && right_time == DBL_MIN) | |
376 | return make_pair(0.0, 0.0); | |
377 | ||
378 | assert(left_time < right_time); | |
379 | return make_pair(left_time, right_time); | |
380 | } | |
381 | ||
382 | void View::enable_sticky_scrolling(bool state) | |
383 | { | |
384 | sticky_scrolling_ = state; | |
385 | } | |
386 | ||
387 | bool View::cursors_shown() const | |
388 | { | |
389 | return show_cursors_; | |
390 | } | |
391 | ||
392 | void View::show_cursors(bool show) | |
393 | { | |
394 | show_cursors_ = show; | |
395 | ruler_->update(); | |
396 | viewport_->update(); | |
397 | } | |
398 | ||
399 | void View::centre_cursors() | |
400 | { | |
401 | const double time_width = scale_ * viewport_->width(); | |
402 | cursors_->first()->set_time(offset_ + time_width * 0.4); | |
403 | cursors_->second()->set_time(offset_ + time_width * 0.6); | |
404 | ruler_->update(); | |
405 | viewport_->update(); | |
406 | } | |
407 | ||
408 | std::shared_ptr<CursorPair> View::cursors() const | |
409 | { | |
410 | return cursors_; | |
411 | } | |
412 | ||
413 | void View::add_flag(double time) | |
414 | { | |
415 | flags_.push_back(shared_ptr<Flag>(new Flag(*this, time, | |
416 | QString("%1").arg(next_flag_text_)))); | |
417 | next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' : | |
418 | (next_flag_text_ + 1); | |
419 | time_item_appearance_changed(true, true); | |
420 | } | |
421 | ||
422 | void View::remove_flag(std::shared_ptr<Flag> flag) | |
423 | { | |
424 | flags_.remove(flag); | |
425 | time_item_appearance_changed(true, true); | |
426 | } | |
427 | ||
428 | vector< std::shared_ptr<Flag> > View::flags() const | |
429 | { | |
430 | vector< std::shared_ptr<Flag> > flags(flags_.begin(), flags_.end()); | |
431 | stable_sort(flags.begin(), flags.end(), | |
432 | [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) { | |
433 | return a->time() < b->time(); | |
434 | }); | |
435 | ||
436 | return flags; | |
437 | } | |
438 | ||
439 | const QPoint& View::hover_point() const | |
440 | { | |
441 | return hover_point_; | |
442 | } | |
443 | ||
444 | void View::update_viewport() | |
445 | { | |
446 | assert(viewport_); | |
447 | viewport_->update(); | |
448 | header_->update(); | |
449 | } | |
450 | ||
451 | void View::restack_all_row_items() | |
452 | { | |
453 | // Make a list of owners that is sorted from deepest first | |
454 | const auto owners = list_row_item_owners(); | |
455 | vector< RowItemOwner* > sorted_owners(owners.begin(), owners.end()); | |
456 | sort(sorted_owners.begin(), sorted_owners.end(), | |
457 | [](const RowItemOwner* a, const RowItemOwner *b) { | |
458 | return a->depth() > b->depth(); }); | |
459 | ||
460 | // Restack the items recursively | |
461 | for (auto &o : sorted_owners) | |
462 | o->restack_items(); | |
463 | ||
464 | // Animate the items to their destination | |
465 | for (const auto &r : *this) | |
466 | r->animate_to_layout_v_offset(); | |
467 | } | |
468 | ||
469 | void View::get_scroll_layout(double &length, double &offset) const | |
470 | { | |
471 | const pair<double, double> extents = get_time_extents(); | |
472 | length = (extents.second - extents.first) / scale_; | |
473 | offset = offset_ / scale_; | |
474 | } | |
475 | ||
476 | void View::set_zoom(double scale, int offset) | |
477 | { | |
478 | // Reset the "always zoom to fit" feature as the user changed the zoom | |
479 | always_zoom_to_fit_ = false; | |
480 | always_zoom_to_fit_changed(false); | |
481 | ||
482 | const double cursor_offset = offset_ + scale_ * offset; | |
483 | const double new_scale = max(min(scale, MaxScale), MinScale); | |
484 | const double new_offset = cursor_offset - new_scale * offset; | |
485 | set_scale_offset(new_scale, new_offset); | |
486 | } | |
487 | ||
488 | void View::calculate_tick_spacing() | |
489 | { | |
490 | const double SpacingIncrement = 32.0f; | |
491 | const double MinValueSpacing = 32.0f; | |
492 | ||
493 | double min_width = SpacingIncrement, typical_width; | |
494 | ||
495 | QFontMetrics m(QApplication::font()); | |
496 | ||
497 | do { | |
498 | const double min_period = scale_ * min_width; | |
499 | ||
500 | const int order = (int)floorf(log10f(min_period)); | |
501 | const double order_decimal = pow(10.0, order); | |
502 | ||
503 | unsigned int unit = 0; | |
504 | ||
505 | do { | |
506 | tick_period_ = order_decimal * ScaleUnits[unit++]; | |
507 | } while (tick_period_ < min_period && | |
508 | unit < countof(ScaleUnits)); | |
509 | ||
510 | tick_prefix_ = (order - pv::util::FirstSIPrefixPower) / 3; | |
511 | ||
512 | typical_width = m.boundingRect(0, 0, INT_MAX, INT_MAX, | |
513 | Qt::AlignLeft | Qt::AlignTop, | |
514 | format_time(offset_, tick_prefix_, time_unit_)).width() + | |
515 | MinValueSpacing; | |
516 | ||
517 | min_width += SpacingIncrement; | |
518 | ||
519 | } while (typical_width > tick_period_ / scale_); | |
520 | } | |
521 | ||
522 | void View::update_scroll() | |
523 | { | |
524 | assert(viewport_); | |
525 | ||
526 | const QSize areaSize = viewport_->size(); | |
527 | ||
528 | // Set the horizontal scroll bar | |
529 | double length = 0, offset = 0; | |
530 | get_scroll_layout(length, offset); | |
531 | length = max(length - areaSize.width(), 0.0); | |
532 | ||
533 | int major_tick_distance = tick_period_ / scale_; | |
534 | ||
535 | horizontalScrollBar()->setPageStep(areaSize.width() / 2); | |
536 | horizontalScrollBar()->setSingleStep(major_tick_distance); | |
537 | ||
538 | updating_scroll_ = true; | |
539 | ||
540 | if (length < MaxScrollValue) { | |
541 | horizontalScrollBar()->setRange(0, length); | |
542 | horizontalScrollBar()->setSliderPosition(offset); | |
543 | } else { | |
544 | horizontalScrollBar()->setRange(0, MaxScrollValue); | |
545 | horizontalScrollBar()->setSliderPosition( | |
546 | offset_ * MaxScrollValue / (scale_ * length)); | |
547 | } | |
548 | ||
549 | updating_scroll_ = false; | |
550 | ||
551 | // Set the vertical scrollbar | |
552 | verticalScrollBar()->setPageStep(areaSize.height()); | |
553 | verticalScrollBar()->setSingleStep(areaSize.height() / 8); | |
554 | ||
555 | const pair<int, int> extents = v_extents(); | |
556 | verticalScrollBar()->setRange(extents.first - (areaSize.height() / 2), | |
557 | extents.second - (areaSize.height() / 2)); | |
558 | } | |
559 | ||
560 | void View::update_layout() | |
561 | { | |
562 | setViewportMargins( | |
563 | header_->sizeHint().width() - pv::view::Header::BaselineOffset, | |
564 | ruler_->sizeHint().height(), 0, 0); | |
565 | ruler_->setGeometry(viewport_->x(), 0, | |
566 | viewport_->width(), ruler_->extended_size_hint().height()); | |
567 | header_->setGeometry(0, viewport_->y(), | |
568 | header_->extended_size_hint().width(), viewport_->height()); | |
569 | update_scroll(); | |
570 | } | |
571 | ||
572 | void View::paint_label(QPainter &p, const QRect &rect, bool hover) | |
573 | { | |
574 | (void)p; | |
575 | (void)rect; | |
576 | (void)hover; | |
577 | } | |
578 | ||
579 | QRectF View::label_rect(const QRectF &rect) | |
580 | { | |
581 | (void)rect; | |
582 | return QRectF(); | |
583 | } | |
584 | ||
585 | RowItemOwner* View::find_prevalent_trace_group( | |
586 | const shared_ptr<sigrok::ChannelGroup> &group, | |
587 | const unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> > | |
588 | &signal_map) | |
589 | { | |
590 | assert(group); | |
591 | ||
592 | unordered_set<RowItemOwner*> owners; | |
593 | vector<RowItemOwner*> owner_list; | |
594 | ||
595 | // Make a set and a list of all the owners | |
596 | for (const auto &channel : group->channels()) { | |
597 | const auto iter = signal_map.find(channel); | |
598 | if (iter == signal_map.end()) | |
599 | continue; | |
600 | ||
601 | RowItemOwner *const o = (*iter).second->owner(); | |
602 | owner_list.push_back(o); | |
603 | owners.insert(o); | |
604 | } | |
605 | ||
606 | // Iterate through the list of owners, and find the most prevalent | |
607 | size_t max_prevalence = 0; | |
608 | RowItemOwner *prevalent_owner = nullptr; | |
609 | for (RowItemOwner *owner : owners) { | |
610 | const size_t prevalence = std::count_if( | |
611 | owner_list.begin(), owner_list.end(), | |
612 | [&](RowItemOwner *o) { return o == owner; }); | |
613 | if (prevalence > max_prevalence) { | |
614 | max_prevalence = prevalence; | |
615 | prevalent_owner = owner; | |
616 | } | |
617 | } | |
618 | ||
619 | return prevalent_owner; | |
620 | } | |
621 | ||
622 | vector< shared_ptr<Trace> > View::extract_new_traces_for_channels( | |
623 | const vector< shared_ptr<sigrok::Channel> > &channels, | |
624 | const unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> > | |
625 | &signal_map, | |
626 | set< shared_ptr<Trace> > &add_list) | |
627 | { | |
628 | vector< shared_ptr<Trace> > filtered_traces; | |
629 | ||
630 | for (const auto &channel : channels) | |
631 | { | |
632 | const auto map_iter = signal_map.find(channel); | |
633 | if (map_iter == signal_map.end()) | |
634 | continue; | |
635 | ||
636 | shared_ptr<Trace> trace = (*map_iter).second; | |
637 | const auto list_iter = add_list.find(trace); | |
638 | if (list_iter == add_list.end()) | |
639 | continue; | |
640 | ||
641 | filtered_traces.push_back(trace); | |
642 | add_list.erase(list_iter); | |
643 | } | |
644 | ||
645 | return filtered_traces; | |
646 | } | |
647 | ||
648 | void View::determine_time_unit() | |
649 | { | |
650 | // Check whether we know the sample rate and hence can use time as the unit | |
651 | if (time_unit_ == util::Samples) { | |
652 | shared_lock<shared_mutex> lock(session().signals_mutex()); | |
653 | const unordered_set< shared_ptr<Signal> > &sigs(session().signals()); | |
654 | ||
655 | // Check all signals but... | |
656 | for (const shared_ptr<Signal> signal : sigs) { | |
657 | const shared_ptr<SignalData> data = signal->data(); | |
658 | ||
659 | // ...only check first segment of each | |
660 | const vector< shared_ptr<Segment> > segments = data->segments(); | |
661 | if (!segments.empty()) | |
662 | if (segments[0]->samplerate()) { | |
663 | time_unit_ = util::Time; | |
664 | break; | |
665 | } | |
666 | } | |
667 | } | |
668 | } | |
669 | ||
670 | bool View::eventFilter(QObject *object, QEvent *event) | |
671 | { | |
672 | const QEvent::Type type = event->type(); | |
673 | if (type == QEvent::MouseMove) { | |
674 | ||
675 | const QMouseEvent *const mouse_event = (QMouseEvent*)event; | |
676 | if (object == viewport_) | |
677 | hover_point_ = mouse_event->pos(); | |
678 | else if (object == ruler_) | |
679 | hover_point_ = QPoint(mouse_event->x(), 0); | |
680 | else if (object == header_) | |
681 | hover_point_ = QPoint(0, mouse_event->y()); | |
682 | else | |
683 | hover_point_ = QPoint(-1, -1); | |
684 | ||
685 | hover_point_changed(); | |
686 | ||
687 | } else if (type == QEvent::Leave) { | |
688 | hover_point_ = QPoint(-1, -1); | |
689 | hover_point_changed(); | |
690 | } | |
691 | ||
692 | return QObject::eventFilter(object, event); | |
693 | } | |
694 | ||
695 | bool View::viewportEvent(QEvent *e) | |
696 | { | |
697 | switch(e->type()) { | |
698 | case QEvent::Paint: | |
699 | case QEvent::MouseButtonPress: | |
700 | case QEvent::MouseButtonRelease: | |
701 | case QEvent::MouseButtonDblClick: | |
702 | case QEvent::MouseMove: | |
703 | case QEvent::Wheel: | |
704 | case QEvent::TouchBegin: | |
705 | case QEvent::TouchUpdate: | |
706 | case QEvent::TouchEnd: | |
707 | return false; | |
708 | ||
709 | default: | |
710 | return QAbstractScrollArea::viewportEvent(e); | |
711 | } | |
712 | } | |
713 | ||
714 | void View::resizeEvent(QResizeEvent*) | |
715 | { | |
716 | update_layout(); | |
717 | } | |
718 | ||
719 | void View::row_item_appearance_changed(bool label, bool content) | |
720 | { | |
721 | if (label) | |
722 | header_->update(); | |
723 | if (content) | |
724 | viewport_->update(); | |
725 | } | |
726 | ||
727 | void View::time_item_appearance_changed(bool label, bool content) | |
728 | { | |
729 | if (label) | |
730 | ruler_->update(); | |
731 | if (content) | |
732 | viewport_->update(); | |
733 | } | |
734 | ||
735 | void View::extents_changed(bool horz, bool vert) | |
736 | { | |
737 | sticky_events_ |= | |
738 | (horz ? RowItemHExtentsChanged : 0) | | |
739 | (vert ? RowItemVExtentsChanged : 0); | |
740 | lazy_event_handler_.start(); | |
741 | } | |
742 | ||
743 | void View::h_scroll_value_changed(int value) | |
744 | { | |
745 | if (updating_scroll_) | |
746 | return; | |
747 | ||
748 | // Disable sticky scrolling when user moves the horizontal scroll bar | |
749 | // during a running acquisition | |
750 | if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) { | |
751 | sticky_scrolling_ = false; | |
752 | sticky_scrolling_changed(false); | |
753 | } | |
754 | ||
755 | const int range = horizontalScrollBar()->maximum(); | |
756 | if (range < MaxScrollValue) | |
757 | offset_ = scale_ * value; | |
758 | else { | |
759 | double length = 0, offset; | |
760 | get_scroll_layout(length, offset); | |
761 | offset_ = scale_ * length * value / MaxScrollValue; | |
762 | } | |
763 | ||
764 | ruler_->update(); | |
765 | viewport_->update(); | |
766 | } | |
767 | ||
768 | void View::v_scroll_value_changed() | |
769 | { | |
770 | header_->update(); | |
771 | viewport_->update(); | |
772 | } | |
773 | ||
774 | void View::signals_changed() | |
775 | { | |
776 | vector< shared_ptr<RowItem> > new_top_level_items; | |
777 | ||
778 | const auto device = session_.device(); | |
779 | if (!device) | |
780 | return; | |
781 | ||
782 | shared_ptr<sigrok::Device> sr_dev = device->device(); | |
783 | assert(sr_dev); | |
784 | ||
785 | // Make a list of traces that are being added, and a list of traces | |
786 | // that are being removed | |
787 | const set<shared_ptr<Trace>> prev_traces = list_by_type<Trace>(); | |
788 | ||
789 | shared_lock<shared_mutex> lock(session_.signals_mutex()); | |
790 | const unordered_set< shared_ptr<Signal> > &sigs(session_.signals()); | |
791 | ||
792 | set< shared_ptr<Trace> > traces(sigs.begin(), sigs.end()); | |
793 | ||
794 | #ifdef ENABLE_DECODE | |
795 | const vector< shared_ptr<DecodeTrace> > decode_traces( | |
796 | session().get_decode_signals()); | |
797 | traces.insert(decode_traces.begin(), decode_traces.end()); | |
798 | #endif | |
799 | ||
800 | set< shared_ptr<Trace> > add_traces; | |
801 | set_difference(traces.begin(), traces.end(), | |
802 | prev_traces.begin(), prev_traces.end(), | |
803 | inserter(add_traces, add_traces.begin())); | |
804 | ||
805 | set< shared_ptr<Trace> > remove_traces; | |
806 | set_difference(prev_traces.begin(), prev_traces.end(), | |
807 | traces.begin(), traces.end(), | |
808 | inserter(remove_traces, remove_traces.begin())); | |
809 | ||
810 | // Make a look-up table of sigrok Channels to pulseview Signals | |
811 | unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> > | |
812 | signal_map; | |
813 | for (const shared_ptr<Signal> &sig : sigs) | |
814 | signal_map[sig->channel()] = sig; | |
815 | ||
816 | // Populate channel groups | |
817 | for (auto entry : sr_dev->channel_groups()) | |
818 | { | |
819 | const shared_ptr<sigrok::ChannelGroup> &group = entry.second; | |
820 | ||
821 | if (group->channels().size() <= 1) | |
822 | continue; | |
823 | ||
824 | // Find best trace group to add to | |
825 | RowItemOwner *owner = find_prevalent_trace_group( | |
826 | group, signal_map); | |
827 | ||
828 | // If there is no trace group, create one | |
829 | shared_ptr<TraceGroup> new_trace_group; | |
830 | if (!owner) { | |
831 | new_trace_group.reset(new TraceGroup()); | |
832 | owner = new_trace_group.get(); | |
833 | } | |
834 | ||
835 | // Extract traces for the trace group, removing them from | |
836 | // the add list | |
837 | const vector< shared_ptr<Trace> > new_traces_in_group = | |
838 | extract_new_traces_for_channels(group->channels(), | |
839 | signal_map, add_traces); | |
840 | ||
841 | // Add the traces to the group | |
842 | const pair<int, int> prev_v_extents = owner->v_extents(); | |
843 | int offset = prev_v_extents.second - prev_v_extents.first; | |
844 | for (shared_ptr<Trace> trace : new_traces_in_group) { | |
845 | assert(trace); | |
846 | owner->add_child_item(trace); | |
847 | ||
848 | const pair<int, int> extents = trace->v_extents(); | |
849 | if (trace->enabled()) | |
850 | offset += -extents.first; | |
851 | trace->force_to_v_offset(offset); | |
852 | if (trace->enabled()) | |
853 | offset += extents.second; | |
854 | } | |
855 | ||
856 | // If this is a new group, enqueue it in the new top level | |
857 | // items list | |
858 | if (!new_traces_in_group.empty() && new_trace_group) | |
859 | new_top_level_items.push_back(new_trace_group); | |
860 | } | |
861 | ||
862 | // Enqueue the remaining channels as free ungrouped traces | |
863 | const vector< shared_ptr<Trace> > new_top_level_signals = | |
864 | extract_new_traces_for_channels(sr_dev->channels(), | |
865 | signal_map, add_traces); | |
866 | new_top_level_items.insert(new_top_level_items.end(), | |
867 | new_top_level_signals.begin(), new_top_level_signals.end()); | |
868 | ||
869 | // Enqueue any remaining traces i.e. decode traces | |
870 | new_top_level_items.insert(new_top_level_items.end(), | |
871 | add_traces.begin(), add_traces.end()); | |
872 | ||
873 | // Remove any removed traces | |
874 | for (shared_ptr<Trace> trace : remove_traces) { | |
875 | RowItemOwner *const owner = trace->owner(); | |
876 | assert(owner); | |
877 | owner->remove_child_item(trace); | |
878 | } | |
879 | ||
880 | // Add and position the pending top levels items | |
881 | for (auto item : new_top_level_items) { | |
882 | add_child_item(item); | |
883 | ||
884 | // Position the item after the last present item | |
885 | int offset = v_extents().second; | |
886 | const pair<int, int> extents = item->v_extents(); | |
887 | if (item->enabled()) | |
888 | offset += -extents.first; | |
889 | item->force_to_v_offset(offset); | |
890 | if (item->enabled()) | |
891 | offset += extents.second; | |
892 | } | |
893 | ||
894 | update_layout(); | |
895 | ||
896 | header_->update(); | |
897 | viewport_->update(); | |
898 | } | |
899 | ||
900 | void View::capture_state_updated(int state) | |
901 | { | |
902 | // Reset "always zoom to fit" when we change to the stopped state | |
903 | if (always_zoom_to_fit_ && (state == Session::Stopped)) { | |
904 | always_zoom_to_fit_ = false; | |
905 | always_zoom_to_fit_changed(false); | |
906 | } | |
907 | ||
908 | if (state == Session::Running) | |
909 | time_unit_ = util::Samples; | |
910 | } | |
911 | ||
912 | void View::data_updated() | |
913 | { | |
914 | if (always_zoom_to_fit_ || sticky_scrolling_) { | |
915 | if (!delayed_view_updater_.isActive()) | |
916 | delayed_view_updater_.start(); | |
917 | } else { | |
918 | determine_time_unit(); | |
919 | update_scroll(); | |
920 | ruler_->update(); | |
921 | viewport_->update(); | |
922 | } | |
923 | } | |
924 | ||
925 | void View::perform_delayed_view_update() | |
926 | { | |
927 | if (always_zoom_to_fit_) | |
928 | zoom_fit(true); | |
929 | ||
930 | if (sticky_scrolling_) { | |
931 | // Make right side of the view sticky | |
932 | double length = 0, offset; | |
933 | get_scroll_layout(length, offset); | |
934 | ||
935 | const QSize areaSize = viewport_->size(); | |
936 | length = max(length - areaSize.width(), 0.0); | |
937 | ||
938 | offset_ = scale_ * length; | |
939 | } | |
940 | ||
941 | determine_time_unit(); | |
942 | update_scroll(); | |
943 | ruler_->update(); | |
944 | viewport_->update(); | |
945 | } | |
946 | ||
947 | void View::process_sticky_events() | |
948 | { | |
949 | if (sticky_events_ & RowItemHExtentsChanged) | |
950 | update_layout(); | |
951 | if (sticky_events_ & RowItemVExtentsChanged) { | |
952 | restack_all_row_items(); | |
953 | update_scroll(); | |
954 | } | |
955 | ||
956 | // Clear the sticky events | |
957 | sticky_events_ = 0; | |
958 | } | |
959 | ||
960 | void View::on_hover_point_changed() | |
961 | { | |
962 | for (shared_ptr<RowItem> r : *this) | |
963 | r->hover_point_changed(); | |
964 | } | |
965 | ||
966 | } // namespace view | |
967 | } // namespace pv |