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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 | using pv::util::Timestamp; | |
66 | ||
67 | using std::deque; | |
68 | using std::dynamic_pointer_cast; | |
69 | using std::inserter; | |
70 | using std::list; | |
71 | using std::lock_guard; | |
72 | using std::max; | |
73 | using std::make_pair; | |
74 | using std::min; | |
75 | using std::pair; | |
76 | using std::set; | |
77 | using std::set_difference; | |
78 | using std::shared_ptr; | |
79 | using std::unordered_map; | |
80 | using std::unordered_set; | |
81 | using std::vector; | |
82 | using std::weak_ptr; | |
83 | ||
84 | namespace pv { | |
85 | namespace view { | |
86 | ||
87 | const Timestamp View::MaxScale("1e9"); | |
88 | const Timestamp View::MinScale("1e-12"); | |
89 | ||
90 | const int View::MaxScrollValue = INT_MAX / 2; | |
91 | const int View::MaxViewAutoUpdateRate = 25; // No more than 25 Hz with sticky scrolling | |
92 | ||
93 | const int View::ScaleUnits[3] = {1, 2, 5}; | |
94 | ||
95 | View::View(Session &session, QWidget *parent) : | |
96 | QAbstractScrollArea(parent), | |
97 | session_(session), | |
98 | viewport_(new Viewport(*this)), | |
99 | ruler_(new Ruler(*this)), | |
100 | header_(new Header(*this)), | |
101 | scale_(1e-3), | |
102 | offset_(0), | |
103 | updating_scroll_(false), | |
104 | sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui() | |
105 | always_zoom_to_fit_(false), | |
106 | tick_period_(0), | |
107 | tick_prefix_(pv::util::SIPrefix::yocto), | |
108 | tick_precision_(0), | |
109 | time_unit_(util::TimeUnit::Time), | |
110 | show_cursors_(false), | |
111 | cursors_(new CursorPair(*this)), | |
112 | next_flag_text_('A'), | |
113 | hover_point_(-1, -1) | |
114 | { | |
115 | connect(horizontalScrollBar(), SIGNAL(valueChanged(int)), | |
116 | this, SLOT(h_scroll_value_changed(int))); | |
117 | connect(verticalScrollBar(), SIGNAL(valueChanged(int)), | |
118 | this, SLOT(v_scroll_value_changed())); | |
119 | ||
120 | connect(&session_, SIGNAL(signals_changed()), | |
121 | this, SLOT(signals_changed())); | |
122 | connect(&session_, SIGNAL(capture_state_changed(int)), | |
123 | this, SLOT(capture_state_updated(int))); | |
124 | connect(&session_, SIGNAL(data_received()), | |
125 | this, SLOT(data_updated())); | |
126 | connect(&session_, SIGNAL(frame_ended()), | |
127 | this, SLOT(data_updated())); | |
128 | ||
129 | connect(header_, SIGNAL(selection_changed()), | |
130 | ruler_, SLOT(clear_selection())); | |
131 | connect(ruler_, SIGNAL(selection_changed()), | |
132 | header_, SLOT(clear_selection())); | |
133 | ||
134 | connect(header_, SIGNAL(selection_changed()), | |
135 | this, SIGNAL(selection_changed())); | |
136 | connect(ruler_, SIGNAL(selection_changed()), | |
137 | this, SIGNAL(selection_changed())); | |
138 | ||
139 | connect(this, SIGNAL(hover_point_changed()), | |
140 | this, SLOT(on_hover_point_changed())); | |
141 | ||
142 | connect(&lazy_event_handler_, SIGNAL(timeout()), | |
143 | this, SLOT(process_sticky_events())); | |
144 | lazy_event_handler_.setSingleShot(true); | |
145 | ||
146 | connect(&delayed_view_updater_, SIGNAL(timeout()), | |
147 | this, SLOT(perform_delayed_view_update())); | |
148 | delayed_view_updater_.setSingleShot(true); | |
149 | delayed_view_updater_.setInterval(1000 / MaxViewAutoUpdateRate); | |
150 | ||
151 | setViewport(viewport_); | |
152 | ||
153 | viewport_->installEventFilter(this); | |
154 | ruler_->installEventFilter(this); | |
155 | header_->installEventFilter(this); | |
156 | ||
157 | // Trigger the initial event manually. The default device has signals | |
158 | // which were created before this object came into being | |
159 | signals_changed(); | |
160 | ||
161 | // make sure the transparent widgets are on the top | |
162 | ruler_->raise(); | |
163 | header_->raise(); | |
164 | ||
165 | // Update the zoom state | |
166 | calculate_tick_spacing(); | |
167 | } | |
168 | ||
169 | Session& View::session() | |
170 | { | |
171 | return session_; | |
172 | } | |
173 | ||
174 | const Session& View::session() const | |
175 | { | |
176 | return session_; | |
177 | } | |
178 | ||
179 | View* View::view() | |
180 | { | |
181 | return this; | |
182 | } | |
183 | ||
184 | const View* View::view() const | |
185 | { | |
186 | return this; | |
187 | } | |
188 | ||
189 | Viewport* View::viewport() | |
190 | { | |
191 | return viewport_; | |
192 | } | |
193 | ||
194 | const Viewport* View::viewport() const | |
195 | { | |
196 | return viewport_; | |
197 | } | |
198 | ||
199 | vector< shared_ptr<TimeItem> > View::time_items() const | |
200 | { | |
201 | const vector<shared_ptr<Flag>> f(flags()); | |
202 | vector<shared_ptr<TimeItem>> items(f.begin(), f.end()); | |
203 | items.push_back(cursors_); | |
204 | items.push_back(cursors_->first()); | |
205 | items.push_back(cursors_->second()); | |
206 | return items; | |
207 | } | |
208 | ||
209 | double View::scale() const | |
210 | { | |
211 | return scale_; | |
212 | } | |
213 | ||
214 | void View::set_scale(double scale) | |
215 | { | |
216 | if (scale_ != scale) { | |
217 | scale_ = scale; | |
218 | Q_EMIT scale_changed(); | |
219 | } | |
220 | } | |
221 | ||
222 | const Timestamp& View::offset() const | |
223 | { | |
224 | return offset_; | |
225 | } | |
226 | ||
227 | void View::set_offset(const pv::util::Timestamp& offset) | |
228 | { | |
229 | if (offset_ != offset) { | |
230 | offset_ = offset; | |
231 | Q_EMIT offset_changed(); | |
232 | } | |
233 | } | |
234 | ||
235 | int View::owner_visual_v_offset() const | |
236 | { | |
237 | return -verticalScrollBar()->sliderPosition(); | |
238 | } | |
239 | ||
240 | void View::set_v_offset(int offset) | |
241 | { | |
242 | verticalScrollBar()->setSliderPosition(offset); | |
243 | header_->update(); | |
244 | viewport_->update(); | |
245 | } | |
246 | ||
247 | unsigned int View::depth() const | |
248 | { | |
249 | return 0; | |
250 | } | |
251 | ||
252 | pv::util::SIPrefix View::tick_prefix() const | |
253 | { | |
254 | return tick_prefix_; | |
255 | } | |
256 | ||
257 | void View::set_tick_prefix(pv::util::SIPrefix tick_prefix) | |
258 | { | |
259 | if (tick_prefix_ != tick_prefix) { | |
260 | tick_prefix_ = tick_prefix; | |
261 | Q_EMIT tick_prefix_changed(); | |
262 | } | |
263 | } | |
264 | ||
265 | unsigned int View::tick_precision() const | |
266 | { | |
267 | return tick_precision_; | |
268 | } | |
269 | ||
270 | void View::set_tick_precision(unsigned tick_precision) | |
271 | { | |
272 | if (tick_precision_ != tick_precision) { | |
273 | tick_precision_ = tick_precision; | |
274 | Q_EMIT tick_precision_changed(); | |
275 | } | |
276 | } | |
277 | ||
278 | const pv::util::Timestamp& View::tick_period() const | |
279 | { | |
280 | return tick_period_; | |
281 | } | |
282 | ||
283 | void View::set_tick_period(const pv::util::Timestamp& tick_period) | |
284 | { | |
285 | if (tick_period_ != tick_period) { | |
286 | tick_period_ = tick_period; | |
287 | Q_EMIT tick_period_changed(); | |
288 | } | |
289 | } | |
290 | ||
291 | TimeUnit View::time_unit() const | |
292 | { | |
293 | return time_unit_; | |
294 | } | |
295 | ||
296 | void View::set_time_unit(pv::util::TimeUnit time_unit) | |
297 | { | |
298 | if (time_unit_ != time_unit) { | |
299 | time_unit_ = time_unit; | |
300 | Q_EMIT time_unit_changed(); | |
301 | } | |
302 | } | |
303 | ||
304 | void View::zoom(double steps) | |
305 | { | |
306 | zoom(steps, viewport_->width() / 2); | |
307 | } | |
308 | ||
309 | void View::zoom(double steps, int offset) | |
310 | { | |
311 | set_zoom(scale_ * pow(3.0/2.0, -steps), offset); | |
312 | } | |
313 | ||
314 | void View::zoom_fit(bool gui_state) | |
315 | { | |
316 | // Act as one-shot when stopped, toggle along with the GUI otherwise | |
317 | if (session_.get_capture_state() == Session::Stopped) { | |
318 | always_zoom_to_fit_ = false; | |
319 | always_zoom_to_fit_changed(false); | |
320 | } else { | |
321 | always_zoom_to_fit_ = gui_state; | |
322 | always_zoom_to_fit_changed(gui_state); | |
323 | } | |
324 | ||
325 | const pair<Timestamp, Timestamp> extents = get_time_extents(); | |
326 | const Timestamp delta = extents.second - extents.first; | |
327 | if (delta < Timestamp("1e-12")) | |
328 | return; | |
329 | ||
330 | assert(viewport_); | |
331 | const int w = viewport_->width(); | |
332 | if (w <= 0) | |
333 | return; | |
334 | ||
335 | const Timestamp scale = max(min(delta / w, MaxScale), MinScale); | |
336 | set_scale_offset(scale.convert_to<double>(), extents.first); | |
337 | } | |
338 | ||
339 | void View::zoom_one_to_one() | |
340 | { | |
341 | using pv::data::SignalData; | |
342 | ||
343 | // Make a set of all the visible data objects | |
344 | set< shared_ptr<SignalData> > visible_data = get_visible_data(); | |
345 | if (visible_data.empty()) | |
346 | return; | |
347 | ||
348 | double samplerate = 0.0; | |
349 | for (const shared_ptr<SignalData> d : visible_data) { | |
350 | assert(d); | |
351 | const vector< shared_ptr<Segment> > segments = | |
352 | d->segments(); | |
353 | for (const shared_ptr<Segment> &s : segments) | |
354 | samplerate = max(samplerate, s->samplerate()); | |
355 | } | |
356 | ||
357 | if (samplerate == 0.0) | |
358 | return; | |
359 | ||
360 | assert(viewport_); | |
361 | const int w = viewport_->width(); | |
362 | if (w <= 0) | |
363 | return; | |
364 | ||
365 | set_zoom(1.0 / samplerate, w / 2); | |
366 | } | |
367 | ||
368 | void View::set_scale_offset(double scale, const Timestamp& offset) | |
369 | { | |
370 | // Disable sticky scrolling / always zoom to fit when acquisition runs | |
371 | // and user drags the viewport | |
372 | if ((scale_ == scale) && (offset_ != offset) && | |
373 | (session_.get_capture_state() == Session::Running)) { | |
374 | ||
375 | if (sticky_scrolling_) { | |
376 | sticky_scrolling_ = false; | |
377 | sticky_scrolling_changed(false); | |
378 | } | |
379 | ||
380 | if (always_zoom_to_fit_) { | |
381 | always_zoom_to_fit_ = false; | |
382 | always_zoom_to_fit_changed(false); | |
383 | } | |
384 | } | |
385 | ||
386 | set_scale(scale); | |
387 | set_offset(offset); | |
388 | ||
389 | calculate_tick_spacing(); | |
390 | ||
391 | update_scroll(); | |
392 | ruler_->update(); | |
393 | viewport_->update(); | |
394 | } | |
395 | ||
396 | set< shared_ptr<SignalData> > View::get_visible_data() const | |
397 | { | |
398 | shared_lock<shared_mutex> lock(session().signals_mutex()); | |
399 | const unordered_set< shared_ptr<Signal> > &sigs(session().signals()); | |
400 | ||
401 | // Make a set of all the visible data objects | |
402 | set< shared_ptr<SignalData> > visible_data; | |
403 | for (const shared_ptr<Signal> sig : sigs) | |
404 | if (sig->enabled()) | |
405 | visible_data.insert(sig->data()); | |
406 | ||
407 | return visible_data; | |
408 | } | |
409 | ||
410 | pair<Timestamp, Timestamp> View::get_time_extents() const | |
411 | { | |
412 | boost::optional<Timestamp> left_time, right_time; | |
413 | const set< shared_ptr<SignalData> > visible_data = get_visible_data(); | |
414 | for (const shared_ptr<SignalData> d : visible_data) | |
415 | { | |
416 | const vector< shared_ptr<Segment> > segments = | |
417 | d->segments(); | |
418 | for (const shared_ptr<Segment> &s : segments) { | |
419 | double samplerate = s->samplerate(); | |
420 | samplerate = (samplerate <= 0.0) ? 1.0 : samplerate; | |
421 | ||
422 | const Timestamp start_time = s->start_time(); | |
423 | left_time = left_time ? | |
424 | min(*left_time, start_time) : | |
425 | start_time; | |
426 | right_time = right_time ? | |
427 | max(*right_time, start_time + d->max_sample_count() / samplerate) : | |
428 | start_time + d->max_sample_count() / samplerate; | |
429 | } | |
430 | } | |
431 | ||
432 | if (!left_time || !right_time) | |
433 | return make_pair(0, 0); | |
434 | ||
435 | assert(*left_time < *right_time); | |
436 | return make_pair(*left_time, *right_time); | |
437 | } | |
438 | ||
439 | void View::enable_sticky_scrolling(bool state) | |
440 | { | |
441 | sticky_scrolling_ = state; | |
442 | } | |
443 | ||
444 | bool View::cursors_shown() const | |
445 | { | |
446 | return show_cursors_; | |
447 | } | |
448 | ||
449 | void View::show_cursors(bool show) | |
450 | { | |
451 | show_cursors_ = show; | |
452 | ruler_->update(); | |
453 | viewport_->update(); | |
454 | } | |
455 | ||
456 | void View::centre_cursors() | |
457 | { | |
458 | const double time_width = scale_ * viewport_->width(); | |
459 | cursors_->first()->set_time(offset_ + time_width * 0.4); | |
460 | cursors_->second()->set_time(offset_ + time_width * 0.6); | |
461 | ruler_->update(); | |
462 | viewport_->update(); | |
463 | } | |
464 | ||
465 | std::shared_ptr<CursorPair> View::cursors() const | |
466 | { | |
467 | return cursors_; | |
468 | } | |
469 | ||
470 | void View::add_flag(const Timestamp& time) | |
471 | { | |
472 | flags_.push_back(shared_ptr<Flag>(new Flag(*this, time, | |
473 | QString("%1").arg(next_flag_text_)))); | |
474 | next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' : | |
475 | (next_flag_text_ + 1); | |
476 | time_item_appearance_changed(true, true); | |
477 | } | |
478 | ||
479 | void View::remove_flag(std::shared_ptr<Flag> flag) | |
480 | { | |
481 | flags_.remove(flag); | |
482 | time_item_appearance_changed(true, true); | |
483 | } | |
484 | ||
485 | vector< std::shared_ptr<Flag> > View::flags() const | |
486 | { | |
487 | vector< std::shared_ptr<Flag> > flags(flags_.begin(), flags_.end()); | |
488 | stable_sort(flags.begin(), flags.end(), | |
489 | [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) { | |
490 | return a->time() < b->time(); | |
491 | }); | |
492 | ||
493 | return flags; | |
494 | } | |
495 | ||
496 | const QPoint& View::hover_point() const | |
497 | { | |
498 | return hover_point_; | |
499 | } | |
500 | ||
501 | void View::update_viewport() | |
502 | { | |
503 | assert(viewport_); | |
504 | viewport_->update(); | |
505 | header_->update(); | |
506 | } | |
507 | ||
508 | void View::restack_all_row_items() | |
509 | { | |
510 | // Make a list of owners that is sorted from deepest first | |
511 | const auto owners = list_row_item_owners(); | |
512 | vector< RowItemOwner* > sorted_owners(owners.begin(), owners.end()); | |
513 | sort(sorted_owners.begin(), sorted_owners.end(), | |
514 | [](const RowItemOwner* a, const RowItemOwner *b) { | |
515 | return a->depth() > b->depth(); }); | |
516 | ||
517 | // Restack the items recursively | |
518 | for (auto &o : sorted_owners) | |
519 | o->restack_items(); | |
520 | ||
521 | // Animate the items to their destination | |
522 | for (const auto &r : *this) | |
523 | r->animate_to_layout_v_offset(); | |
524 | } | |
525 | ||
526 | void View::get_scroll_layout(double &length, Timestamp &offset) const | |
527 | { | |
528 | const pair<Timestamp, Timestamp> extents = get_time_extents(); | |
529 | length = ((extents.second - extents.first) / scale_).convert_to<double>(); | |
530 | offset = offset_ / scale_; | |
531 | } | |
532 | ||
533 | void View::set_zoom(double scale, int offset) | |
534 | { | |
535 | // Reset the "always zoom to fit" feature as the user changed the zoom | |
536 | always_zoom_to_fit_ = false; | |
537 | always_zoom_to_fit_changed(false); | |
538 | ||
539 | const Timestamp cursor_offset = offset_ + scale_ * offset; | |
540 | const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale); | |
541 | const Timestamp new_offset = cursor_offset - new_scale * offset; | |
542 | set_scale_offset(new_scale.convert_to<double>(), new_offset); | |
543 | } | |
544 | ||
545 | void View::calculate_tick_spacing() | |
546 | { | |
547 | const double SpacingIncrement = 10.0f; | |
548 | const double MinValueSpacing = 40.0f; | |
549 | ||
550 | // Figure out the highest numeric value visible on a label | |
551 | const QSize areaSize = viewport_->size(); | |
552 | const Timestamp max_time = max(fabs(offset_), | |
553 | fabs(offset_ + scale_ * areaSize.width())); | |
554 | ||
555 | double min_width = SpacingIncrement; | |
556 | double label_width, tick_period_width; | |
557 | ||
558 | QFontMetrics m(QApplication::font()); | |
559 | ||
560 | // Copies of the member variables with the same name, used in the calculation | |
561 | // and written back afterwards, so that we don't emit signals all the time | |
562 | // during the calculation. | |
563 | pv::util::Timestamp tick_period = tick_period_; | |
564 | pv::util::SIPrefix tick_prefix = tick_prefix_; | |
565 | unsigned tick_precision = tick_precision_; | |
566 | ||
567 | do { | |
568 | const double min_period = scale_ * min_width; | |
569 | ||
570 | const int order = (int)floorf(log10f(min_period)); | |
571 | const pv::util::Timestamp order_decimal = | |
572 | pow(pv::util::Timestamp(10), order); | |
573 | ||
574 | // Allow for a margin of error so that a scale unit of 1 can be used. | |
575 | // Otherwise, for a SU of 1 the tick period will almost always be below | |
576 | // the min_period by a small amount - and thus skipped in favor of 2. | |
577 | // Note: margin assumes that SU[0] and SU[1] contain the smallest values | |
578 | double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0; | |
579 | double tp_with_margin; | |
580 | unsigned int unit = 0; | |
581 | ||
582 | do { | |
583 | tp_with_margin = order_decimal.convert_to<double>() * | |
584 | (ScaleUnits[unit++] + tp_margin); | |
585 | } while (tp_with_margin < min_period && unit < countof(ScaleUnits)); | |
586 | ||
587 | tick_period = order_decimal * ScaleUnits[unit - 1]; | |
588 | tick_prefix = static_cast<pv::util::SIPrefix>( | |
589 | (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3); | |
590 | ||
591 | // Precision is the number of fractional digits required, not | |
592 | // taking the prefix into account (and it must never be negative) | |
593 | tick_precision = std::max(ceil(log10(1 / tick_period)).convert_to<int>(), 0); | |
594 | ||
595 | tick_period_width = (tick_period / scale_).convert_to<double>(); | |
596 | ||
597 | const QString label_text = | |
598 | format_time(max_time, tick_prefix, time_unit_, tick_precision); | |
599 | ||
600 | label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX, | |
601 | Qt::AlignLeft | Qt::AlignTop, label_text).width() + | |
602 | MinValueSpacing; | |
603 | ||
604 | min_width += SpacingIncrement; | |
605 | } while (tick_period_width < label_width); | |
606 | ||
607 | set_tick_period(tick_period); | |
608 | set_tick_prefix(tick_prefix); | |
609 | set_tick_precision(tick_precision); | |
610 | } | |
611 | ||
612 | void View::update_scroll() | |
613 | { | |
614 | assert(viewport_); | |
615 | ||
616 | const QSize areaSize = viewport_->size(); | |
617 | ||
618 | // Set the horizontal scroll bar | |
619 | double length = 0; | |
620 | Timestamp offset; | |
621 | get_scroll_layout(length, offset); | |
622 | length = max(length - areaSize.width(), 0.0); | |
623 | ||
624 | int major_tick_distance = (tick_period_ / scale_).convert_to<int>(); | |
625 | ||
626 | horizontalScrollBar()->setPageStep(areaSize.width() / 2); | |
627 | horizontalScrollBar()->setSingleStep(major_tick_distance); | |
628 | ||
629 | updating_scroll_ = true; | |
630 | ||
631 | if (length < MaxScrollValue) { | |
632 | horizontalScrollBar()->setRange(0, length); | |
633 | horizontalScrollBar()->setSliderPosition(offset.convert_to<double>()); | |
634 | } else { | |
635 | horizontalScrollBar()->setRange(0, MaxScrollValue); | |
636 | horizontalScrollBar()->setSliderPosition( | |
637 | (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>()); | |
638 | } | |
639 | ||
640 | updating_scroll_ = false; | |
641 | ||
642 | // Set the vertical scrollbar | |
643 | verticalScrollBar()->setPageStep(areaSize.height()); | |
644 | verticalScrollBar()->setSingleStep(areaSize.height() / 8); | |
645 | ||
646 | const pair<int, int> extents = v_extents(); | |
647 | verticalScrollBar()->setRange(extents.first - (areaSize.height() / 2), | |
648 | extents.second - (areaSize.height() / 2)); | |
649 | } | |
650 | ||
651 | void View::update_layout() | |
652 | { | |
653 | setViewportMargins( | |
654 | header_->sizeHint().width() - pv::view::Header::BaselineOffset, | |
655 | ruler_->sizeHint().height(), 0, 0); | |
656 | ruler_->setGeometry(viewport_->x(), 0, | |
657 | viewport_->width(), ruler_->extended_size_hint().height()); | |
658 | header_->setGeometry(0, viewport_->y(), | |
659 | header_->extended_size_hint().width(), viewport_->height()); | |
660 | update_scroll(); | |
661 | } | |
662 | ||
663 | void View::paint_label(QPainter &p, const QRect &rect, bool hover) | |
664 | { | |
665 | (void)p; | |
666 | (void)rect; | |
667 | (void)hover; | |
668 | } | |
669 | ||
670 | QRectF View::label_rect(const QRectF &rect) | |
671 | { | |
672 | (void)rect; | |
673 | return QRectF(); | |
674 | } | |
675 | ||
676 | RowItemOwner* View::find_prevalent_trace_group( | |
677 | const shared_ptr<sigrok::ChannelGroup> &group, | |
678 | const unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> > | |
679 | &signal_map) | |
680 | { | |
681 | assert(group); | |
682 | ||
683 | unordered_set<RowItemOwner*> owners; | |
684 | vector<RowItemOwner*> owner_list; | |
685 | ||
686 | // Make a set and a list of all the owners | |
687 | for (const auto &channel : group->channels()) { | |
688 | const auto iter = signal_map.find(channel); | |
689 | if (iter == signal_map.end()) | |
690 | continue; | |
691 | ||
692 | RowItemOwner *const o = (*iter).second->owner(); | |
693 | owner_list.push_back(o); | |
694 | owners.insert(o); | |
695 | } | |
696 | ||
697 | // Iterate through the list of owners, and find the most prevalent | |
698 | size_t max_prevalence = 0; | |
699 | RowItemOwner *prevalent_owner = nullptr; | |
700 | for (RowItemOwner *owner : owners) { | |
701 | const size_t prevalence = std::count_if( | |
702 | owner_list.begin(), owner_list.end(), | |
703 | [&](RowItemOwner *o) { return o == owner; }); | |
704 | if (prevalence > max_prevalence) { | |
705 | max_prevalence = prevalence; | |
706 | prevalent_owner = owner; | |
707 | } | |
708 | } | |
709 | ||
710 | return prevalent_owner; | |
711 | } | |
712 | ||
713 | vector< shared_ptr<Trace> > View::extract_new_traces_for_channels( | |
714 | const vector< shared_ptr<sigrok::Channel> > &channels, | |
715 | const unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> > | |
716 | &signal_map, | |
717 | set< shared_ptr<Trace> > &add_list) | |
718 | { | |
719 | vector< shared_ptr<Trace> > filtered_traces; | |
720 | ||
721 | for (const auto &channel : channels) | |
722 | { | |
723 | const auto map_iter = signal_map.find(channel); | |
724 | if (map_iter == signal_map.end()) | |
725 | continue; | |
726 | ||
727 | shared_ptr<Trace> trace = (*map_iter).second; | |
728 | const auto list_iter = add_list.find(trace); | |
729 | if (list_iter == add_list.end()) | |
730 | continue; | |
731 | ||
732 | filtered_traces.push_back(trace); | |
733 | add_list.erase(list_iter); | |
734 | } | |
735 | ||
736 | return filtered_traces; | |
737 | } | |
738 | ||
739 | void View::determine_time_unit() | |
740 | { | |
741 | // Check whether we know the sample rate and hence can use time as the unit | |
742 | if (time_unit_ == util::TimeUnit::Samples) { | |
743 | shared_lock<shared_mutex> lock(session().signals_mutex()); | |
744 | const unordered_set< shared_ptr<Signal> > &sigs(session().signals()); | |
745 | ||
746 | // Check all signals but... | |
747 | for (const shared_ptr<Signal> signal : sigs) { | |
748 | const shared_ptr<SignalData> data = signal->data(); | |
749 | ||
750 | // ...only check first segment of each | |
751 | const vector< shared_ptr<Segment> > segments = data->segments(); | |
752 | if (!segments.empty()) | |
753 | if (segments[0]->samplerate()) { | |
754 | set_time_unit(util::TimeUnit::Time); | |
755 | break; | |
756 | } | |
757 | } | |
758 | } | |
759 | } | |
760 | ||
761 | bool View::eventFilter(QObject *object, QEvent *event) | |
762 | { | |
763 | const QEvent::Type type = event->type(); | |
764 | if (type == QEvent::MouseMove) { | |
765 | ||
766 | const QMouseEvent *const mouse_event = (QMouseEvent*)event; | |
767 | if (object == viewport_) | |
768 | hover_point_ = mouse_event->pos(); | |
769 | else if (object == ruler_) | |
770 | hover_point_ = QPoint(mouse_event->x(), 0); | |
771 | else if (object == header_) | |
772 | hover_point_ = QPoint(0, mouse_event->y()); | |
773 | else | |
774 | hover_point_ = QPoint(-1, -1); | |
775 | ||
776 | hover_point_changed(); | |
777 | ||
778 | } else if (type == QEvent::Leave) { | |
779 | hover_point_ = QPoint(-1, -1); | |
780 | hover_point_changed(); | |
781 | } | |
782 | ||
783 | return QObject::eventFilter(object, event); | |
784 | } | |
785 | ||
786 | bool View::viewportEvent(QEvent *e) | |
787 | { | |
788 | switch(e->type()) { | |
789 | case QEvent::Paint: | |
790 | case QEvent::MouseButtonPress: | |
791 | case QEvent::MouseButtonRelease: | |
792 | case QEvent::MouseButtonDblClick: | |
793 | case QEvent::MouseMove: | |
794 | case QEvent::Wheel: | |
795 | case QEvent::TouchBegin: | |
796 | case QEvent::TouchUpdate: | |
797 | case QEvent::TouchEnd: | |
798 | return false; | |
799 | ||
800 | default: | |
801 | return QAbstractScrollArea::viewportEvent(e); | |
802 | } | |
803 | } | |
804 | ||
805 | void View::resizeEvent(QResizeEvent*) | |
806 | { | |
807 | update_layout(); | |
808 | } | |
809 | ||
810 | void View::row_item_appearance_changed(bool label, bool content) | |
811 | { | |
812 | if (label) | |
813 | header_->update(); | |
814 | if (content) | |
815 | viewport_->update(); | |
816 | } | |
817 | ||
818 | void View::time_item_appearance_changed(bool label, bool content) | |
819 | { | |
820 | if (label) | |
821 | ruler_->update(); | |
822 | if (content) | |
823 | viewport_->update(); | |
824 | } | |
825 | ||
826 | void View::extents_changed(bool horz, bool vert) | |
827 | { | |
828 | sticky_events_ |= | |
829 | (horz ? RowItemHExtentsChanged : 0) | | |
830 | (vert ? RowItemVExtentsChanged : 0); | |
831 | lazy_event_handler_.start(); | |
832 | } | |
833 | ||
834 | void View::h_scroll_value_changed(int value) | |
835 | { | |
836 | if (updating_scroll_) | |
837 | return; | |
838 | ||
839 | // Disable sticky scrolling when user moves the horizontal scroll bar | |
840 | // during a running acquisition | |
841 | if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) { | |
842 | sticky_scrolling_ = false; | |
843 | sticky_scrolling_changed(false); | |
844 | } | |
845 | ||
846 | const int range = horizontalScrollBar()->maximum(); | |
847 | if (range < MaxScrollValue) | |
848 | set_offset(scale_ * value); | |
849 | else { | |
850 | double length = 0; | |
851 | Timestamp offset; | |
852 | get_scroll_layout(length, offset); | |
853 | set_offset(scale_ * length * value / MaxScrollValue); | |
854 | } | |
855 | ||
856 | ruler_->update(); | |
857 | viewport_->update(); | |
858 | } | |
859 | ||
860 | void View::v_scroll_value_changed() | |
861 | { | |
862 | header_->update(); | |
863 | viewport_->update(); | |
864 | } | |
865 | ||
866 | void View::signals_changed() | |
867 | { | |
868 | vector< shared_ptr<RowItem> > new_top_level_items; | |
869 | ||
870 | const auto device = session_.device(); | |
871 | if (!device) | |
872 | return; | |
873 | ||
874 | shared_ptr<sigrok::Device> sr_dev = device->device(); | |
875 | assert(sr_dev); | |
876 | ||
877 | // Make a list of traces that are being added, and a list of traces | |
878 | // that are being removed | |
879 | const set<shared_ptr<Trace>> prev_traces = list_by_type<Trace>(); | |
880 | ||
881 | shared_lock<shared_mutex> lock(session_.signals_mutex()); | |
882 | const unordered_set< shared_ptr<Signal> > &sigs(session_.signals()); | |
883 | ||
884 | set< shared_ptr<Trace> > traces(sigs.begin(), sigs.end()); | |
885 | ||
886 | #ifdef ENABLE_DECODE | |
887 | const vector< shared_ptr<DecodeTrace> > decode_traces( | |
888 | session().get_decode_signals()); | |
889 | traces.insert(decode_traces.begin(), decode_traces.end()); | |
890 | #endif | |
891 | ||
892 | set< shared_ptr<Trace> > add_traces; | |
893 | set_difference(traces.begin(), traces.end(), | |
894 | prev_traces.begin(), prev_traces.end(), | |
895 | inserter(add_traces, add_traces.begin())); | |
896 | ||
897 | set< shared_ptr<Trace> > remove_traces; | |
898 | set_difference(prev_traces.begin(), prev_traces.end(), | |
899 | traces.begin(), traces.end(), | |
900 | inserter(remove_traces, remove_traces.begin())); | |
901 | ||
902 | // Make a look-up table of sigrok Channels to pulseview Signals | |
903 | unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> > | |
904 | signal_map; | |
905 | for (const shared_ptr<Signal> &sig : sigs) | |
906 | signal_map[sig->channel()] = sig; | |
907 | ||
908 | // Populate channel groups | |
909 | for (auto entry : sr_dev->channel_groups()) | |
910 | { | |
911 | const shared_ptr<sigrok::ChannelGroup> &group = entry.second; | |
912 | ||
913 | if (group->channels().size() <= 1) | |
914 | continue; | |
915 | ||
916 | // Find best trace group to add to | |
917 | RowItemOwner *owner = find_prevalent_trace_group( | |
918 | group, signal_map); | |
919 | ||
920 | // If there is no trace group, create one | |
921 | shared_ptr<TraceGroup> new_trace_group; | |
922 | if (!owner) { | |
923 | new_trace_group.reset(new TraceGroup()); | |
924 | owner = new_trace_group.get(); | |
925 | } | |
926 | ||
927 | // Extract traces for the trace group, removing them from | |
928 | // the add list | |
929 | const vector< shared_ptr<Trace> > new_traces_in_group = | |
930 | extract_new_traces_for_channels(group->channels(), | |
931 | signal_map, add_traces); | |
932 | ||
933 | // Add the traces to the group | |
934 | const pair<int, int> prev_v_extents = owner->v_extents(); | |
935 | int offset = prev_v_extents.second - prev_v_extents.first; | |
936 | for (shared_ptr<Trace> trace : new_traces_in_group) { | |
937 | assert(trace); | |
938 | owner->add_child_item(trace); | |
939 | ||
940 | const pair<int, int> extents = trace->v_extents(); | |
941 | if (trace->enabled()) | |
942 | offset += -extents.first; | |
943 | trace->force_to_v_offset(offset); | |
944 | if (trace->enabled()) | |
945 | offset += extents.second; | |
946 | } | |
947 | ||
948 | // If this is a new group, enqueue it in the new top level | |
949 | // items list | |
950 | if (!new_traces_in_group.empty() && new_trace_group) | |
951 | new_top_level_items.push_back(new_trace_group); | |
952 | } | |
953 | ||
954 | // Enqueue the remaining channels as free ungrouped traces | |
955 | const vector< shared_ptr<Trace> > new_top_level_signals = | |
956 | extract_new_traces_for_channels(sr_dev->channels(), | |
957 | signal_map, add_traces); | |
958 | new_top_level_items.insert(new_top_level_items.end(), | |
959 | new_top_level_signals.begin(), new_top_level_signals.end()); | |
960 | ||
961 | // Enqueue any remaining traces i.e. decode traces | |
962 | new_top_level_items.insert(new_top_level_items.end(), | |
963 | add_traces.begin(), add_traces.end()); | |
964 | ||
965 | // Remove any removed traces | |
966 | for (shared_ptr<Trace> trace : remove_traces) { | |
967 | RowItemOwner *const owner = trace->owner(); | |
968 | assert(owner); | |
969 | owner->remove_child_item(trace); | |
970 | } | |
971 | ||
972 | // Add and position the pending top levels items | |
973 | for (auto item : new_top_level_items) { | |
974 | add_child_item(item); | |
975 | ||
976 | // Position the item after the last present item | |
977 | int offset = v_extents().second; | |
978 | const pair<int, int> extents = item->v_extents(); | |
979 | if (item->enabled()) | |
980 | offset += -extents.first; | |
981 | item->force_to_v_offset(offset); | |
982 | if (item->enabled()) | |
983 | offset += extents.second; | |
984 | } | |
985 | ||
986 | update_layout(); | |
987 | ||
988 | header_->update(); | |
989 | viewport_->update(); | |
990 | } | |
991 | ||
992 | void View::capture_state_updated(int state) | |
993 | { | |
994 | if (state == Session::Running) | |
995 | set_time_unit(util::TimeUnit::Samples); | |
996 | ||
997 | if (state == Session::Stopped) { | |
998 | // After acquisition has stopped we need to re-calculate the ticks once | |
999 | // as it's otherwise done when the user pans or zooms, which is too late | |
1000 | calculate_tick_spacing(); | |
1001 | ||
1002 | // Reset "always zoom to fit", the acquisition has stopped | |
1003 | if (always_zoom_to_fit_) { | |
1004 | always_zoom_to_fit_ = false; | |
1005 | always_zoom_to_fit_changed(false); | |
1006 | } | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | void View::data_updated() | |
1011 | { | |
1012 | if (always_zoom_to_fit_ || sticky_scrolling_) { | |
1013 | if (!delayed_view_updater_.isActive()) | |
1014 | delayed_view_updater_.start(); | |
1015 | } else { | |
1016 | determine_time_unit(); | |
1017 | update_scroll(); | |
1018 | ruler_->update(); | |
1019 | viewport_->update(); | |
1020 | } | |
1021 | } | |
1022 | ||
1023 | void View::perform_delayed_view_update() | |
1024 | { | |
1025 | if (always_zoom_to_fit_) | |
1026 | zoom_fit(true); | |
1027 | ||
1028 | if (sticky_scrolling_) { | |
1029 | // Make right side of the view sticky | |
1030 | double length = 0; | |
1031 | Timestamp offset; | |
1032 | get_scroll_layout(length, offset); | |
1033 | ||
1034 | const QSize areaSize = viewport_->size(); | |
1035 | length = max(length - areaSize.width(), 0.0); | |
1036 | ||
1037 | set_offset(scale_ * length); | |
1038 | } | |
1039 | ||
1040 | determine_time_unit(); | |
1041 | update_scroll(); | |
1042 | ruler_->update(); | |
1043 | viewport_->update(); | |
1044 | } | |
1045 | ||
1046 | void View::process_sticky_events() | |
1047 | { | |
1048 | if (sticky_events_ & RowItemHExtentsChanged) | |
1049 | update_layout(); | |
1050 | if (sticky_events_ & RowItemVExtentsChanged) { | |
1051 | restack_all_row_items(); | |
1052 | update_scroll(); | |
1053 | } | |
1054 | ||
1055 | // Clear the sticky events | |
1056 | sticky_events_ = 0; | |
1057 | } | |
1058 | ||
1059 | void View::on_hover_point_changed() | |
1060 | { | |
1061 | for (shared_ptr<RowItem> r : *this) | |
1062 | r->hover_point_changed(); | |
1063 | } | |
1064 | ||
1065 | } // namespace view | |
1066 | } // namespace pv |