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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 <cassert> | |
28 | #include <climits> | |
29 | #include <cmath> | |
30 | #include <mutex> | |
31 | #include <unordered_set> | |
32 | ||
33 | #include <QApplication> | |
34 | #include <QEvent> | |
35 | #include <QFontMetrics> | |
36 | #include <QMouseEvent> | |
37 | #include <QScrollBar> | |
38 | ||
39 | #include <libsigrok/libsigrok.hpp> | |
40 | ||
41 | #include "cursorheader.hpp" | |
42 | #include "decodetrace.hpp" | |
43 | #include "header.hpp" | |
44 | #include "logicsignal.hpp" | |
45 | #include "ruler.hpp" | |
46 | #include "signal.hpp" | |
47 | #include "tracegroup.hpp" | |
48 | #include "view.hpp" | |
49 | #include "viewport.hpp" | |
50 | ||
51 | #include "pv/session.hpp" | |
52 | #include "pv/data/logic.hpp" | |
53 | #include "pv/data/logicsegment.hpp" | |
54 | #include "pv/util.hpp" | |
55 | ||
56 | using boost::shared_lock; | |
57 | using boost::shared_mutex; | |
58 | ||
59 | using pv::data::SignalData; | |
60 | using pv::data::Segment; | |
61 | using pv::util::format_time; | |
62 | ||
63 | using std::deque; | |
64 | using std::dynamic_pointer_cast; | |
65 | using std::list; | |
66 | using std::lock_guard; | |
67 | using std::max; | |
68 | using std::make_pair; | |
69 | using std::min; | |
70 | using std::pair; | |
71 | using std::set; | |
72 | using std::shared_ptr; | |
73 | using std::unordered_map; | |
74 | using std::unordered_set; | |
75 | using std::vector; | |
76 | using std::weak_ptr; | |
77 | ||
78 | namespace pv { | |
79 | namespace view { | |
80 | ||
81 | const double View::MaxScale = 1e9; | |
82 | const double View::MinScale = 1e-15; | |
83 | ||
84 | const int View::MaxScrollValue = INT_MAX / 2; | |
85 | ||
86 | const int View::ScaleUnits[3] = {1, 2, 5}; | |
87 | ||
88 | const QColor View::CursorAreaColour(220, 231, 243); | |
89 | ||
90 | const QSizeF View::LabelPadding(4, 0); | |
91 | ||
92 | View::View(Session &session, QWidget *parent) : | |
93 | QAbstractScrollArea(parent), | |
94 | session_(session), | |
95 | viewport_(new Viewport(*this)), | |
96 | ruler_(new Ruler(*this)), | |
97 | cursorheader_(new CursorHeader(*this)), | |
98 | header_(new Header(*this)), | |
99 | scale_(1e-6), | |
100 | offset_(0), | |
101 | v_offset_(0), | |
102 | updating_scroll_(false), | |
103 | tick_period_(0.0), | |
104 | tick_prefix_(0), | |
105 | show_cursors_(false), | |
106 | cursors_(new CursorPair(*this)), | |
107 | next_flag_text_('A'), | |
108 | hover_point_(-1, -1) | |
109 | { | |
110 | connect(horizontalScrollBar(), SIGNAL(valueChanged(int)), | |
111 | this, SLOT(h_scroll_value_changed(int))); | |
112 | connect(verticalScrollBar(), SIGNAL(valueChanged(int)), | |
113 | this, SLOT(v_scroll_value_changed(int))); | |
114 | ||
115 | connect(&session_, SIGNAL(signals_changed()), | |
116 | this, SLOT(signals_changed())); | |
117 | connect(&session_, SIGNAL(capture_state_changed(int)), | |
118 | this, SLOT(data_updated())); | |
119 | connect(&session_, SIGNAL(data_received()), | |
120 | this, SLOT(data_updated())); | |
121 | connect(&session_, SIGNAL(frame_ended()), | |
122 | this, SLOT(data_updated())); | |
123 | ||
124 | connect(header_, SIGNAL(signals_moved()), | |
125 | this, SLOT(on_signals_moved())); | |
126 | ||
127 | connect(header_, SIGNAL(selection_changed()), | |
128 | cursorheader_, SLOT(clear_selection())); | |
129 | connect(cursorheader_, SIGNAL(selection_changed()), | |
130 | header_, SLOT(clear_selection())); | |
131 | ||
132 | connect(header_, SIGNAL(selection_changed()), | |
133 | this, SIGNAL(selection_changed())); | |
134 | connect(cursorheader_, 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 | setViewport(viewport_); | |
145 | ||
146 | viewport_->installEventFilter(this); | |
147 | ruler_->installEventFilter(this); | |
148 | cursorheader_->installEventFilter(this); | |
149 | header_->installEventFilter(this); | |
150 | ||
151 | // Trigger the initial event manually. The default device has signals | |
152 | // which were created before this object came into being | |
153 | signals_changed(); | |
154 | ||
155 | // make sure the transparent widgets are on the top | |
156 | cursorheader_->raise(); | |
157 | header_->raise(); | |
158 | ||
159 | // Update the zoom state | |
160 | calculate_tick_spacing(); | |
161 | } | |
162 | ||
163 | Session& View::session() | |
164 | { | |
165 | return session_; | |
166 | } | |
167 | ||
168 | const Session& View::session() const | |
169 | { | |
170 | return session_; | |
171 | } | |
172 | ||
173 | View* View::view() | |
174 | { | |
175 | return this; | |
176 | } | |
177 | ||
178 | const View* View::view() const | |
179 | { | |
180 | return this; | |
181 | } | |
182 | ||
183 | Viewport* View::viewport() | |
184 | { | |
185 | return viewport_; | |
186 | } | |
187 | ||
188 | const Viewport* View::viewport() const | |
189 | { | |
190 | return viewport_; | |
191 | } | |
192 | ||
193 | vector< shared_ptr<TimeItem> > View::time_items() const | |
194 | { | |
195 | const vector<shared_ptr<Flag>> f(flags()); | |
196 | vector<shared_ptr<TimeItem>> items(f.begin(), f.end()); | |
197 | items.push_back(cursors_); | |
198 | items.push_back(cursors_->first()); | |
199 | items.push_back(cursors_->second()); | |
200 | return items; | |
201 | } | |
202 | ||
203 | double View::scale() const | |
204 | { | |
205 | return scale_; | |
206 | } | |
207 | ||
208 | double View::offset() const | |
209 | { | |
210 | return offset_; | |
211 | } | |
212 | ||
213 | int View::owner_visual_v_offset() const | |
214 | { | |
215 | return -v_offset_; | |
216 | } | |
217 | ||
218 | unsigned int View::depth() const | |
219 | { | |
220 | return 0; | |
221 | } | |
222 | ||
223 | unsigned int View::tick_prefix() const | |
224 | { | |
225 | return tick_prefix_; | |
226 | } | |
227 | ||
228 | double View::tick_period() const | |
229 | { | |
230 | return tick_period_; | |
231 | } | |
232 | ||
233 | void View::zoom(double steps) | |
234 | { | |
235 | zoom(steps, viewport_->width() / 2); | |
236 | } | |
237 | ||
238 | void View::zoom(double steps, int offset) | |
239 | { | |
240 | set_zoom(scale_ * pow(3.0/2.0, -steps), offset); | |
241 | } | |
242 | ||
243 | void View::zoom_fit() | |
244 | { | |
245 | const pair<double, double> extents = get_time_extents(); | |
246 | const double delta = extents.second - extents.first; | |
247 | if (delta < 1e-12) | |
248 | return; | |
249 | ||
250 | assert(viewport_); | |
251 | const int w = viewport_->width(); | |
252 | if (w <= 0) | |
253 | return; | |
254 | ||
255 | const double scale = max(min(delta / w, MaxScale), MinScale); | |
256 | set_scale_offset(scale, extents.first); | |
257 | } | |
258 | ||
259 | void View::zoom_one_to_one() | |
260 | { | |
261 | using pv::data::SignalData; | |
262 | ||
263 | // Make a set of all the visible data objects | |
264 | set< shared_ptr<SignalData> > visible_data = get_visible_data(); | |
265 | if (visible_data.empty()) | |
266 | return; | |
267 | ||
268 | double samplerate = 0.0; | |
269 | for (const shared_ptr<SignalData> d : visible_data) { | |
270 | assert(d); | |
271 | const vector< shared_ptr<Segment> > segments = | |
272 | d->segments(); | |
273 | for (const shared_ptr<Segment> &s : segments) | |
274 | samplerate = max(samplerate, s->samplerate()); | |
275 | } | |
276 | ||
277 | if (samplerate == 0.0) | |
278 | return; | |
279 | ||
280 | assert(viewport_); | |
281 | const int w = viewport_->width(); | |
282 | if (w <= 0) | |
283 | return; | |
284 | ||
285 | set_zoom(1.0 / samplerate, w / 2); | |
286 | } | |
287 | ||
288 | void View::set_scale_offset(double scale, double offset) | |
289 | { | |
290 | scale_ = scale; | |
291 | offset_ = offset; | |
292 | ||
293 | calculate_tick_spacing(); | |
294 | ||
295 | update_scroll(); | |
296 | ruler_->update(); | |
297 | cursorheader_->update(); | |
298 | viewport_->update(); | |
299 | scale_offset_changed(); | |
300 | } | |
301 | ||
302 | set< shared_ptr<SignalData> > View::get_visible_data() const | |
303 | { | |
304 | shared_lock<shared_mutex> lock(session().signals_mutex()); | |
305 | const vector< shared_ptr<Signal> > &sigs(session().signals()); | |
306 | ||
307 | // Make a set of all the visible data objects | |
308 | set< shared_ptr<SignalData> > visible_data; | |
309 | for (const shared_ptr<Signal> sig : sigs) | |
310 | if (sig->enabled()) | |
311 | visible_data.insert(sig->data()); | |
312 | ||
313 | return visible_data; | |
314 | } | |
315 | ||
316 | pair<double, double> View::get_time_extents() const | |
317 | { | |
318 | double left_time = DBL_MAX, right_time = DBL_MIN; | |
319 | const set< shared_ptr<SignalData> > visible_data = get_visible_data(); | |
320 | for (const shared_ptr<SignalData> d : visible_data) | |
321 | { | |
322 | const vector< shared_ptr<Segment> > segments = | |
323 | d->segments(); | |
324 | for (const shared_ptr<Segment> &s : segments) { | |
325 | double samplerate = s->samplerate(); | |
326 | samplerate = (samplerate <= 0.0) ? 1.0 : samplerate; | |
327 | ||
328 | const double start_time = s->start_time(); | |
329 | left_time = min(left_time, start_time); | |
330 | right_time = max(right_time, start_time + | |
331 | d->get_max_sample_count() / samplerate); | |
332 | } | |
333 | } | |
334 | ||
335 | if (left_time == DBL_MAX && right_time == DBL_MIN) | |
336 | return make_pair(0.0, 0.0); | |
337 | ||
338 | assert(left_time < right_time); | |
339 | return make_pair(left_time, right_time); | |
340 | } | |
341 | ||
342 | bool View::cursors_shown() const | |
343 | { | |
344 | return show_cursors_; | |
345 | } | |
346 | ||
347 | void View::show_cursors(bool show) | |
348 | { | |
349 | show_cursors_ = show; | |
350 | cursorheader_->update(); | |
351 | viewport_->update(); | |
352 | } | |
353 | ||
354 | void View::centre_cursors() | |
355 | { | |
356 | const double time_width = scale_ * viewport_->width(); | |
357 | cursors_->first()->set_time(offset_ + time_width * 0.4); | |
358 | cursors_->second()->set_time(offset_ + time_width * 0.6); | |
359 | cursorheader_->update(); | |
360 | viewport_->update(); | |
361 | } | |
362 | ||
363 | std::shared_ptr<CursorPair> View::cursors() const | |
364 | { | |
365 | return cursors_; | |
366 | } | |
367 | ||
368 | void View::add_flag(double time) | |
369 | { | |
370 | flags_.push_back(shared_ptr<Flag>(new Flag(*this, time, | |
371 | QString("%1").arg(next_flag_text_)))); | |
372 | next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' : | |
373 | (next_flag_text_ + 1); | |
374 | time_item_appearance_changed(true, true); | |
375 | } | |
376 | ||
377 | void View::remove_flag(std::shared_ptr<Flag> flag) | |
378 | { | |
379 | flags_.remove(flag); | |
380 | time_item_appearance_changed(true, true); | |
381 | } | |
382 | ||
383 | vector< std::shared_ptr<Flag> > View::flags() const | |
384 | { | |
385 | vector< std::shared_ptr<Flag> > flags(flags_.begin(), flags_.end()); | |
386 | stable_sort(flags.begin(), flags.end(), | |
387 | [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) { | |
388 | return a->time() < b->time(); | |
389 | }); | |
390 | ||
391 | return flags; | |
392 | } | |
393 | ||
394 | const QPoint& View::hover_point() const | |
395 | { | |
396 | return hover_point_; | |
397 | } | |
398 | ||
399 | void View::update_viewport() | |
400 | { | |
401 | assert(viewport_); | |
402 | viewport_->update(); | |
403 | header_->update(); | |
404 | } | |
405 | ||
406 | void View::restack_all_row_items() | |
407 | { | |
408 | // Make a set of owners | |
409 | unordered_set< RowItemOwner* > owners; | |
410 | for (const auto &r : *this) | |
411 | owners.insert(r->owner()); | |
412 | ||
413 | // Make a list that is sorted from deepest first | |
414 | vector< RowItemOwner* > sorted_owners(owners.begin(), owners.end()); | |
415 | sort(sorted_owners.begin(), sorted_owners.end(), | |
416 | [](const RowItemOwner* a, const RowItemOwner *b) { | |
417 | return a->depth() > b->depth(); }); | |
418 | ||
419 | // Restack the items recursively | |
420 | for (auto &o : sorted_owners) | |
421 | o->restack_items(); | |
422 | ||
423 | // Animate the items to their destination | |
424 | for (const auto &r : *this) | |
425 | r->animate_to_layout_v_offset(); | |
426 | } | |
427 | ||
428 | void View::get_scroll_layout(double &length, double &offset) const | |
429 | { | |
430 | const pair<double, double> extents = get_time_extents(); | |
431 | length = (extents.second - extents.first) / scale_; | |
432 | offset = offset_ / scale_; | |
433 | } | |
434 | ||
435 | void View::set_zoom(double scale, int offset) | |
436 | { | |
437 | const double cursor_offset = offset_ + scale_ * offset; | |
438 | const double new_scale = max(min(scale, MaxScale), MinScale); | |
439 | const double new_offset = cursor_offset - new_scale * offset; | |
440 | set_scale_offset(new_scale, new_offset); | |
441 | } | |
442 | ||
443 | void View::calculate_tick_spacing() | |
444 | { | |
445 | const double SpacingIncrement = 32.0f; | |
446 | const double MinValueSpacing = 32.0f; | |
447 | ||
448 | double min_width = SpacingIncrement, typical_width; | |
449 | ||
450 | QFontMetrics m(QApplication::font()); | |
451 | ||
452 | do { | |
453 | const double min_period = scale_ * min_width; | |
454 | ||
455 | const int order = (int)floorf(log10f(min_period)); | |
456 | const double order_decimal = pow(10.0, order); | |
457 | ||
458 | unsigned int unit = 0; | |
459 | ||
460 | do { | |
461 | tick_period_ = order_decimal * ScaleUnits[unit++]; | |
462 | } while (tick_period_ < min_period && | |
463 | unit < countof(ScaleUnits)); | |
464 | ||
465 | tick_prefix_ = (order - pv::util::FirstSIPrefixPower) / 3; | |
466 | ||
467 | typical_width = m.boundingRect(0, 0, INT_MAX, INT_MAX, | |
468 | Qt::AlignLeft | Qt::AlignTop, | |
469 | format_time(offset_, tick_prefix_)).width() + | |
470 | MinValueSpacing; | |
471 | ||
472 | min_width += SpacingIncrement; | |
473 | ||
474 | } while(typical_width > tick_period_ / scale_); | |
475 | } | |
476 | ||
477 | void View::update_scroll() | |
478 | { | |
479 | assert(viewport_); | |
480 | ||
481 | const QSize areaSize = viewport_->size(); | |
482 | ||
483 | // Set the horizontal scroll bar | |
484 | double length = 0, offset = 0; | |
485 | get_scroll_layout(length, offset); | |
486 | length = max(length - areaSize.width(), 0.0); | |
487 | ||
488 | int major_tick_distance = tick_period_ / scale_; | |
489 | ||
490 | horizontalScrollBar()->setPageStep(areaSize.width() / 2); | |
491 | horizontalScrollBar()->setSingleStep(major_tick_distance); | |
492 | ||
493 | updating_scroll_ = true; | |
494 | ||
495 | if (length < MaxScrollValue) { | |
496 | horizontalScrollBar()->setRange(0, length); | |
497 | horizontalScrollBar()->setSliderPosition(offset); | |
498 | } else { | |
499 | horizontalScrollBar()->setRange(0, MaxScrollValue); | |
500 | horizontalScrollBar()->setSliderPosition( | |
501 | offset_ * MaxScrollValue / (scale_ * length)); | |
502 | } | |
503 | ||
504 | updating_scroll_ = false; | |
505 | ||
506 | // Set the vertical scrollbar | |
507 | verticalScrollBar()->setPageStep(areaSize.height()); | |
508 | verticalScrollBar()->setSingleStep(areaSize.height() / 8); | |
509 | ||
510 | const pair<int, int> extents = v_extents(); | |
511 | verticalScrollBar()->setRange(extents.first - (areaSize.height() / 2), | |
512 | extents.second - (areaSize.height() / 2)); | |
513 | } | |
514 | ||
515 | void View::update_layout() | |
516 | { | |
517 | setViewportMargins( | |
518 | header_->sizeHint().width() - pv::view::Header::BaselineOffset, | |
519 | ruler_->sizeHint().height(), 0, 0); | |
520 | ruler_->setGeometry(viewport_->x(), 0, | |
521 | viewport_->width(), viewport_->y()); | |
522 | cursorheader_->setGeometry( | |
523 | viewport_->x(), | |
524 | ruler_->sizeHint().height() - cursorheader_->sizeHint().height() / 2, | |
525 | viewport_->width(), cursorheader_->sizeHint().height()); | |
526 | header_->setGeometry(0, viewport_->y(), | |
527 | header_->sizeHint().width(), viewport_->height()); | |
528 | update_scroll(); | |
529 | } | |
530 | ||
531 | void View::paint_label(QPainter &p, const QRect &rect, bool hover) | |
532 | { | |
533 | (void)p; | |
534 | (void)rect; | |
535 | (void)hover; | |
536 | } | |
537 | ||
538 | QRectF View::label_rect(const QRectF &rect) | |
539 | { | |
540 | (void)rect; | |
541 | return QRectF(); | |
542 | } | |
543 | ||
544 | bool View::add_channels_to_owner( | |
545 | const vector< shared_ptr<sigrok::Channel> > &channels, | |
546 | RowItemOwner *owner, int &offset, | |
547 | unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> > | |
548 | &signal_map, | |
549 | std::function<bool (shared_ptr<RowItem>)> filter_func) | |
550 | { | |
551 | bool any_added = false; | |
552 | ||
553 | assert(owner); | |
554 | ||
555 | for (const auto &channel : channels) | |
556 | { | |
557 | const auto iter = signal_map.find(channel); | |
558 | if (iter == signal_map.end() || | |
559 | (filter_func && !filter_func((*iter).second))) | |
560 | continue; | |
561 | ||
562 | shared_ptr<RowItem> row_item = (*iter).second; | |
563 | owner->add_child_item(row_item); | |
564 | apply_offset(row_item, offset); | |
565 | signal_map.erase(iter); | |
566 | ||
567 | any_added = true; | |
568 | } | |
569 | ||
570 | return any_added; | |
571 | } | |
572 | ||
573 | void View::apply_offset(shared_ptr<RowItem> row_item, int &offset) { | |
574 | assert(row_item); | |
575 | const pair<int, int> extents = row_item->v_extents(); | |
576 | if (row_item->enabled()) | |
577 | offset += -extents.first; | |
578 | row_item->force_to_v_offset(offset); | |
579 | if (row_item->enabled()) | |
580 | offset += extents.second; | |
581 | } | |
582 | ||
583 | bool View::eventFilter(QObject *object, QEvent *event) | |
584 | { | |
585 | const QEvent::Type type = event->type(); | |
586 | if (type == QEvent::MouseMove) { | |
587 | ||
588 | const QMouseEvent *const mouse_event = (QMouseEvent*)event; | |
589 | if (object == viewport_) | |
590 | hover_point_ = mouse_event->pos(); | |
591 | else if (object == ruler_ || object == cursorheader_) | |
592 | hover_point_ = QPoint(mouse_event->x(), 0); | |
593 | else if (object == header_) | |
594 | hover_point_ = QPoint(0, mouse_event->y()); | |
595 | else | |
596 | hover_point_ = QPoint(-1, -1); | |
597 | ||
598 | hover_point_changed(); | |
599 | ||
600 | } else if (type == QEvent::Leave) { | |
601 | hover_point_ = QPoint(-1, -1); | |
602 | hover_point_changed(); | |
603 | } | |
604 | ||
605 | return QObject::eventFilter(object, event); | |
606 | } | |
607 | ||
608 | bool View::viewportEvent(QEvent *e) | |
609 | { | |
610 | switch(e->type()) { | |
611 | case QEvent::Paint: | |
612 | case QEvent::MouseButtonPress: | |
613 | case QEvent::MouseButtonRelease: | |
614 | case QEvent::MouseButtonDblClick: | |
615 | case QEvent::MouseMove: | |
616 | case QEvent::Wheel: | |
617 | case QEvent::TouchBegin: | |
618 | case QEvent::TouchUpdate: | |
619 | case QEvent::TouchEnd: | |
620 | return false; | |
621 | ||
622 | default: | |
623 | return QAbstractScrollArea::viewportEvent(e); | |
624 | } | |
625 | } | |
626 | ||
627 | void View::resizeEvent(QResizeEvent*) | |
628 | { | |
629 | update_layout(); | |
630 | } | |
631 | ||
632 | void View::row_item_appearance_changed(bool label, bool content) | |
633 | { | |
634 | if (label) | |
635 | header_->update(); | |
636 | if (content) | |
637 | viewport_->update(); | |
638 | } | |
639 | ||
640 | void View::time_item_appearance_changed(bool label, bool content) | |
641 | { | |
642 | if (label) | |
643 | cursorheader_->update(); | |
644 | if (content) | |
645 | viewport_->update(); | |
646 | } | |
647 | ||
648 | void View::extents_changed(bool horz, bool vert) | |
649 | { | |
650 | sticky_events_ |= | |
651 | (horz ? RowItemHExtentsChanged : 0) | | |
652 | (vert ? RowItemVExtentsChanged : 0); | |
653 | lazy_event_handler_.start(); | |
654 | } | |
655 | ||
656 | void View::h_scroll_value_changed(int value) | |
657 | { | |
658 | if (updating_scroll_) | |
659 | return; | |
660 | ||
661 | const int range = horizontalScrollBar()->maximum(); | |
662 | if (range < MaxScrollValue) | |
663 | offset_ = scale_ * value; | |
664 | else { | |
665 | double length = 0, offset; | |
666 | get_scroll_layout(length, offset); | |
667 | offset_ = scale_ * length * value / MaxScrollValue; | |
668 | } | |
669 | ||
670 | ruler_->update(); | |
671 | cursorheader_->update(); | |
672 | viewport_->update(); | |
673 | } | |
674 | ||
675 | void View::v_scroll_value_changed(int value) | |
676 | { | |
677 | v_offset_ = value; | |
678 | header_->update(); | |
679 | viewport_->update(); | |
680 | } | |
681 | ||
682 | void View::signals_changed() | |
683 | { | |
684 | int offset = 0; | |
685 | ||
686 | // Populate the traces | |
687 | clear_child_items(); | |
688 | ||
689 | shared_ptr<sigrok::Device> device = session_.device(); | |
690 | assert(device); | |
691 | ||
692 | // Collect a set of signals | |
693 | unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> > | |
694 | signal_map; | |
695 | ||
696 | shared_lock<shared_mutex> lock(session_.signals_mutex()); | |
697 | const vector< shared_ptr<Signal> > &sigs(session_.signals()); | |
698 | ||
699 | for (const shared_ptr<Signal> &sig : sigs) | |
700 | signal_map[sig->channel()] = sig; | |
701 | ||
702 | // Populate channel groups | |
703 | for (auto entry : device->channel_groups()) | |
704 | { | |
705 | const shared_ptr<sigrok::ChannelGroup> &group = entry.second; | |
706 | ||
707 | if (group->channels().size() <= 1) | |
708 | continue; | |
709 | ||
710 | shared_ptr<TraceGroup> trace_group(new TraceGroup()); | |
711 | int child_offset = 0; | |
712 | if (add_channels_to_owner(group->channels(), | |
713 | trace_group.get(), child_offset, signal_map)) | |
714 | { | |
715 | add_child_item(trace_group); | |
716 | apply_offset(trace_group, offset); | |
717 | } | |
718 | } | |
719 | ||
720 | // Add the remaining logic channels | |
721 | shared_ptr<TraceGroup> logic_trace_group(new TraceGroup()); | |
722 | int child_offset = 0; | |
723 | ||
724 | if (add_channels_to_owner(device->channels(), | |
725 | logic_trace_group.get(), child_offset, signal_map, | |
726 | [](shared_ptr<RowItem> r) -> bool { | |
727 | return dynamic_pointer_cast<LogicSignal>(r) != nullptr; | |
728 | })) | |
729 | ||
730 | { | |
731 | add_child_item(logic_trace_group); | |
732 | apply_offset(logic_trace_group, offset); | |
733 | } | |
734 | ||
735 | // Add the remaining channels | |
736 | add_channels_to_owner(device->channels(), this, offset, signal_map); | |
737 | assert(signal_map.empty()); | |
738 | ||
739 | // Add decode signals | |
740 | #ifdef ENABLE_DECODE | |
741 | const vector< shared_ptr<DecodeTrace> > decode_sigs( | |
742 | session().get_decode_signals()); | |
743 | for (auto s : decode_sigs) { | |
744 | add_child_item(s); | |
745 | apply_offset(s, offset); | |
746 | } | |
747 | #endif | |
748 | ||
749 | update_layout(); | |
750 | } | |
751 | ||
752 | void View::data_updated() | |
753 | { | |
754 | // Update the scroll bars | |
755 | update_scroll(); | |
756 | ||
757 | // Repaint the view | |
758 | viewport_->update(); | |
759 | } | |
760 | ||
761 | void View::on_signals_moved() | |
762 | { | |
763 | update_scroll(); | |
764 | signals_moved(); | |
765 | } | |
766 | ||
767 | void View::process_sticky_events() | |
768 | { | |
769 | if (sticky_events_ & RowItemHExtentsChanged) | |
770 | update_layout(); | |
771 | if (sticky_events_ & RowItemVExtentsChanged) | |
772 | restack_all_row_items(); | |
773 | ||
774 | // Clear the sticky events | |
775 | sticky_events_ = 0; | |
776 | } | |
777 | ||
778 | void View::on_hover_point_changed() | |
779 | { | |
780 | for (shared_ptr<RowItem> r : *this) | |
781 | r->hover_point_changed(); | |
782 | } | |
783 | ||
784 | } // namespace view | |
785 | } // namespace pv |