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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 <assert.h> | |
26 | #include <limits.h> | |
27 | #include <math.h> | |
28 | ||
29 | #include <QEvent> | |
30 | #include <QMouseEvent> | |
31 | #include <QScrollBar> | |
32 | ||
33 | #include "cursorheader.h" | |
34 | #include "decodetrace.h" | |
35 | #include "header.h" | |
36 | #include "ruler.h" | |
37 | #include "signal.h" | |
38 | #include "view.h" | |
39 | #include "viewport.h" | |
40 | ||
41 | #include "pv/sigsession.h" | |
42 | #include "pv/data/logic.h" | |
43 | #include "pv/data/logicsnapshot.h" | |
44 | ||
45 | using pv::data::SignalData; | |
46 | using std::deque; | |
47 | using std::list; | |
48 | using std::max; | |
49 | using std::make_pair; | |
50 | using std::min; | |
51 | using std::pair; | |
52 | using std::set; | |
53 | using std::shared_ptr; | |
54 | using std::vector; | |
55 | using std::weak_ptr; | |
56 | ||
57 | namespace pv { | |
58 | namespace view { | |
59 | ||
60 | const double View::MaxScale = 1e9; | |
61 | const double View::MinScale = 1e-15; | |
62 | ||
63 | const int View::MaxScrollValue = INT_MAX / 2; | |
64 | ||
65 | const int View::SignalHeight = 30; | |
66 | const int View::SignalMargin = 10; | |
67 | const int View::SignalSnapGridSize = 10; | |
68 | ||
69 | const QColor View::CursorAreaColour(220, 231, 243); | |
70 | ||
71 | const QSizeF View::LabelPadding(4, 0); | |
72 | ||
73 | View::View(SigSession &session, QWidget *parent) : | |
74 | QAbstractScrollArea(parent), | |
75 | _session(session), | |
76 | _viewport(new Viewport(*this)), | |
77 | _ruler(new Ruler(*this)), | |
78 | _cursorheader(new CursorHeader(*this)), | |
79 | _header(new Header(*this)), | |
80 | _scale(1e-6), | |
81 | _offset(0), | |
82 | _v_offset(0), | |
83 | _updating_scroll(false), | |
84 | _show_cursors(false), | |
85 | _cursors(*this), | |
86 | _hover_point(-1, -1) | |
87 | { | |
88 | connect(horizontalScrollBar(), SIGNAL(valueChanged(int)), | |
89 | this, SLOT(h_scroll_value_changed(int))); | |
90 | connect(verticalScrollBar(), SIGNAL(valueChanged(int)), | |
91 | this, SLOT(v_scroll_value_changed(int))); | |
92 | ||
93 | connect(&_session, SIGNAL(signals_changed()), | |
94 | this, SLOT(signals_changed())); | |
95 | connect(&_session, SIGNAL(capture_state_changed(int)), | |
96 | this, SLOT(data_updated())); | |
97 | connect(&_session, SIGNAL(data_received()), | |
98 | this, SLOT(data_updated())); | |
99 | connect(&_session, SIGNAL(frame_ended()), | |
100 | this, SLOT(data_updated())); | |
101 | ||
102 | connect(_cursors.first().get(), SIGNAL(time_changed()), | |
103 | this, SLOT(marker_time_changed())); | |
104 | connect(_cursors.second().get(), SIGNAL(time_changed()), | |
105 | this, SLOT(marker_time_changed())); | |
106 | ||
107 | connect(_header, SIGNAL(geometry_updated()), | |
108 | this, SLOT(on_geometry_updated())); | |
109 | connect(_header, SIGNAL(signals_moved()), | |
110 | this, SLOT(on_signals_moved())); | |
111 | ||
112 | connect(_header, SIGNAL(selection_changed()), | |
113 | _cursorheader, SLOT(clear_selection())); | |
114 | connect(_cursorheader, SIGNAL(selection_changed()), | |
115 | _header, SLOT(clear_selection())); | |
116 | ||
117 | connect(_header, SIGNAL(selection_changed()), | |
118 | this, SIGNAL(selection_changed())); | |
119 | connect(_cursorheader, SIGNAL(selection_changed()), | |
120 | this, SIGNAL(selection_changed())); | |
121 | ||
122 | setViewport(_viewport); | |
123 | ||
124 | _viewport->installEventFilter(this); | |
125 | _ruler->installEventFilter(this); | |
126 | _cursorheader->installEventFilter(this); | |
127 | _header->installEventFilter(this); | |
128 | ||
129 | // Trigger the initial event manually. The default device has signals | |
130 | // which were created before this object came into being | |
131 | signals_changed(); | |
132 | ||
133 | // make sure the transparent widgets are on the top | |
134 | _cursorheader->raise(); | |
135 | _header->raise(); | |
136 | } | |
137 | ||
138 | SigSession& View::session() | |
139 | { | |
140 | return _session; | |
141 | } | |
142 | ||
143 | const SigSession& View::session() const | |
144 | { | |
145 | return _session; | |
146 | } | |
147 | ||
148 | double View::scale() const | |
149 | { | |
150 | return _scale; | |
151 | } | |
152 | ||
153 | double View::offset() const | |
154 | { | |
155 | return _offset; | |
156 | } | |
157 | ||
158 | int View::v_offset() const | |
159 | { | |
160 | return _v_offset; | |
161 | } | |
162 | ||
163 | void View::zoom(double steps) | |
164 | { | |
165 | zoom(steps, _viewport->width() / 2); | |
166 | } | |
167 | ||
168 | void View::zoom(double steps, int offset) | |
169 | { | |
170 | set_zoom(_scale * pow(3.0/2.0, -steps), offset); | |
171 | } | |
172 | ||
173 | void View::zoom_fit() | |
174 | { | |
175 | const pair<double, double> extents = get_time_extents(); | |
176 | const double delta = extents.second - extents.first; | |
177 | if (delta < 1e-12) | |
178 | return; | |
179 | ||
180 | assert(_viewport); | |
181 | const int w = _viewport->width(); | |
182 | if (w <= 0) | |
183 | return; | |
184 | ||
185 | const double scale = max(min(delta / w, MaxScale), MinScale); | |
186 | set_scale_offset(scale, extents.first); | |
187 | } | |
188 | ||
189 | void View::zoom_one_to_one() | |
190 | { | |
191 | using pv::data::SignalData; | |
192 | ||
193 | const vector< shared_ptr<Signal> > sigs( | |
194 | session().get_signals()); | |
195 | ||
196 | // Make a set of all the visible data objects | |
197 | set< shared_ptr<SignalData> > visible_data = get_visible_data(); | |
198 | if (visible_data.empty()) | |
199 | return; | |
200 | ||
201 | double samplerate = 0.0; | |
202 | for (const shared_ptr<SignalData> d : visible_data) { | |
203 | assert(d); | |
204 | samplerate = max(samplerate, d->samplerate()); | |
205 | } | |
206 | ||
207 | if (samplerate == 0.0) | |
208 | return; | |
209 | ||
210 | assert(_viewport); | |
211 | const int w = _viewport->width(); | |
212 | if (w <= 0) | |
213 | return; | |
214 | ||
215 | set_zoom(1.0 / samplerate, w / 2); | |
216 | } | |
217 | ||
218 | void View::set_scale_offset(double scale, double offset) | |
219 | { | |
220 | _scale = scale; | |
221 | _offset = offset; | |
222 | ||
223 | update_scroll(); | |
224 | _ruler->update(); | |
225 | _cursorheader->update(); | |
226 | _viewport->update(); | |
227 | scale_offset_changed(); | |
228 | } | |
229 | ||
230 | vector< shared_ptr<Trace> > View::get_traces() const | |
231 | { | |
232 | const vector< shared_ptr<Signal> > sigs( | |
233 | session().get_signals()); | |
234 | #ifdef ENABLE_DECODE | |
235 | const vector< shared_ptr<DecodeTrace> > decode_sigs( | |
236 | session().get_decode_signals()); | |
237 | vector< shared_ptr<Trace> > traces( | |
238 | sigs.size() + decode_sigs.size()); | |
239 | #else | |
240 | vector< shared_ptr<Trace> > traces(sigs.size()); | |
241 | #endif | |
242 | ||
243 | auto i = traces.begin(); | |
244 | i = copy(sigs.begin(), sigs.end(), i); | |
245 | #ifdef ENABLE_DECODE | |
246 | i = copy(decode_sigs.begin(), decode_sigs.end(), i); | |
247 | #endif | |
248 | ||
249 | stable_sort(traces.begin(), traces.end(), compare_trace_v_offsets); | |
250 | return traces; | |
251 | } | |
252 | ||
253 | list<weak_ptr<SelectableItem> > View::selected_items() const | |
254 | { | |
255 | list<weak_ptr<SelectableItem> > items; | |
256 | ||
257 | // List the selected signals | |
258 | const vector< shared_ptr<Trace> > traces(get_traces()); | |
259 | for (shared_ptr<Trace> t : traces) { | |
260 | assert(t); | |
261 | if (t->selected()) | |
262 | items.push_back(t); | |
263 | } | |
264 | ||
265 | // List the selected cursors | |
266 | if (_cursors.first()->selected()) | |
267 | items.push_back(_cursors.first()); | |
268 | if (_cursors.second()->selected()) | |
269 | items.push_back(_cursors.second()); | |
270 | ||
271 | return items; | |
272 | } | |
273 | ||
274 | set< shared_ptr<SignalData> > View::get_visible_data() const | |
275 | { | |
276 | const vector< shared_ptr<Signal> > sigs( | |
277 | session().get_signals()); | |
278 | ||
279 | // Make a set of all the visible data objects | |
280 | set< shared_ptr<SignalData> > visible_data; | |
281 | for (const shared_ptr<Signal> sig : sigs) | |
282 | if (sig->enabled()) | |
283 | visible_data.insert(sig->data()); | |
284 | ||
285 | return visible_data; | |
286 | } | |
287 | ||
288 | pair<double, double> View::get_time_extents() const | |
289 | { | |
290 | const set< shared_ptr<SignalData> > visible_data = get_visible_data(); | |
291 | if (visible_data.empty()) | |
292 | return make_pair(0.0, 0.0); | |
293 | ||
294 | double left_time = DBL_MAX, right_time = DBL_MIN; | |
295 | for (const shared_ptr<SignalData> d : visible_data) | |
296 | { | |
297 | const double start_time = d->get_start_time(); | |
298 | double samplerate = d->samplerate(); | |
299 | samplerate = (samplerate <= 0.0) ? 1.0 : samplerate; | |
300 | ||
301 | left_time = min(left_time, start_time); | |
302 | right_time = max(right_time, start_time + | |
303 | d->get_max_sample_count() / samplerate); | |
304 | } | |
305 | ||
306 | assert(left_time < right_time); | |
307 | return make_pair(left_time, right_time); | |
308 | } | |
309 | ||
310 | bool View::cursors_shown() const | |
311 | { | |
312 | return _show_cursors; | |
313 | } | |
314 | ||
315 | void View::show_cursors(bool show) | |
316 | { | |
317 | _show_cursors = show; | |
318 | _cursorheader->update(); | |
319 | _viewport->update(); | |
320 | } | |
321 | ||
322 | void View::centre_cursors() | |
323 | { | |
324 | const double time_width = _scale * _viewport->width(); | |
325 | _cursors.first()->set_time(_offset + time_width * 0.4); | |
326 | _cursors.second()->set_time(_offset + time_width * 0.6); | |
327 | _cursorheader->update(); | |
328 | _viewport->update(); | |
329 | } | |
330 | ||
331 | CursorPair& View::cursors() | |
332 | { | |
333 | return _cursors; | |
334 | } | |
335 | ||
336 | const CursorPair& View::cursors() const | |
337 | { | |
338 | return _cursors; | |
339 | } | |
340 | ||
341 | const QPoint& View::hover_point() const | |
342 | { | |
343 | return _hover_point; | |
344 | } | |
345 | ||
346 | void View::normalize_layout() | |
347 | { | |
348 | const vector< shared_ptr<Trace> > traces(get_traces()); | |
349 | ||
350 | int v_min = INT_MAX; | |
351 | for (const shared_ptr<Trace> t : traces) | |
352 | v_min = min(t->get_v_offset(), v_min); | |
353 | ||
354 | const int delta = -min(v_min, 0); | |
355 | for (shared_ptr<Trace> t : traces) | |
356 | t->set_v_offset(t->get_v_offset() + delta); | |
357 | ||
358 | verticalScrollBar()->setSliderPosition(_v_offset + delta); | |
359 | v_scroll_value_changed(verticalScrollBar()->sliderPosition()); | |
360 | } | |
361 | ||
362 | void View::update_viewport() | |
363 | { | |
364 | assert(_viewport); | |
365 | _viewport->update(); | |
366 | } | |
367 | ||
368 | void View::get_scroll_layout(double &length, double &offset) const | |
369 | { | |
370 | const pair<double, double> extents = get_time_extents(); | |
371 | length = (extents.second - extents.first) / _scale; | |
372 | offset = _offset / _scale; | |
373 | } | |
374 | ||
375 | void View::set_zoom(double scale, int offset) | |
376 | { | |
377 | const double cursor_offset = _offset + _scale * offset; | |
378 | const double new_scale = max(min(scale, MaxScale), MinScale); | |
379 | const double new_offset = cursor_offset - new_scale * offset; | |
380 | set_scale_offset(new_scale, new_offset); | |
381 | } | |
382 | ||
383 | void View::update_scroll() | |
384 | { | |
385 | assert(_viewport); | |
386 | ||
387 | const QSize areaSize = _viewport->size(); | |
388 | ||
389 | // Set the horizontal scroll bar | |
390 | double length = 0, offset = 0; | |
391 | get_scroll_layout(length, offset); | |
392 | length = max(length - areaSize.width(), 0.0); | |
393 | ||
394 | horizontalScrollBar()->setPageStep(areaSize.width() / 2); | |
395 | ||
396 | _updating_scroll = true; | |
397 | ||
398 | if (length < MaxScrollValue) { | |
399 | horizontalScrollBar()->setRange(0, length); | |
400 | horizontalScrollBar()->setSliderPosition(offset); | |
401 | } else { | |
402 | horizontalScrollBar()->setRange(0, MaxScrollValue); | |
403 | horizontalScrollBar()->setSliderPosition( | |
404 | _offset * MaxScrollValue / (_scale * length)); | |
405 | } | |
406 | ||
407 | _updating_scroll = false; | |
408 | ||
409 | // Set the vertical scrollbar | |
410 | verticalScrollBar()->setPageStep(areaSize.height()); | |
411 | verticalScrollBar()->setRange(0, | |
412 | _viewport->get_total_height() + SignalMargin - | |
413 | areaSize.height()); | |
414 | } | |
415 | ||
416 | void View::update_layout() | |
417 | { | |
418 | setViewportMargins( | |
419 | _header->sizeHint().width() - pv::view::Header::BaselineOffset, | |
420 | _ruler->sizeHint().height(), 0, 0); | |
421 | _ruler->setGeometry(_viewport->x(), 0, | |
422 | _viewport->width(), _viewport->y()); | |
423 | _cursorheader->setGeometry( | |
424 | _viewport->x(), | |
425 | _ruler->sizeHint().height() - _cursorheader->sizeHint().height() / 2, | |
426 | _viewport->width(), _cursorheader->sizeHint().height()); | |
427 | _header->setGeometry(0, _viewport->y(), | |
428 | _header->sizeHint().width(), _viewport->height()); | |
429 | update_scroll(); | |
430 | } | |
431 | ||
432 | bool View::compare_trace_v_offsets(const shared_ptr<Trace> &a, | |
433 | const shared_ptr<Trace> &b) | |
434 | { | |
435 | assert(a); | |
436 | assert(b); | |
437 | return a->get_v_offset() < b->get_v_offset(); | |
438 | } | |
439 | ||
440 | bool View::eventFilter(QObject *object, QEvent *event) | |
441 | { | |
442 | const QEvent::Type type = event->type(); | |
443 | if (type == QEvent::MouseMove) { | |
444 | ||
445 | const QMouseEvent *const mouse_event = (QMouseEvent*)event; | |
446 | if (object == _viewport) | |
447 | _hover_point = mouse_event->pos(); | |
448 | else if (object == _ruler || object == _cursorheader) | |
449 | _hover_point = QPoint(mouse_event->x(), 0); | |
450 | else if (object == _header) | |
451 | _hover_point = QPoint(0, mouse_event->y()); | |
452 | else | |
453 | _hover_point = QPoint(-1, -1); | |
454 | ||
455 | hover_point_changed(); | |
456 | ||
457 | } else if (type == QEvent::Leave) { | |
458 | _hover_point = QPoint(-1, -1); | |
459 | hover_point_changed(); | |
460 | } | |
461 | ||
462 | return QObject::eventFilter(object, event); | |
463 | } | |
464 | ||
465 | bool View::viewportEvent(QEvent *e) | |
466 | { | |
467 | switch(e->type()) { | |
468 | case QEvent::Paint: | |
469 | case QEvent::MouseButtonPress: | |
470 | case QEvent::MouseButtonRelease: | |
471 | case QEvent::MouseButtonDblClick: | |
472 | case QEvent::MouseMove: | |
473 | case QEvent::Wheel: | |
474 | case QEvent::TouchBegin: | |
475 | case QEvent::TouchUpdate: | |
476 | case QEvent::TouchEnd: | |
477 | return false; | |
478 | ||
479 | default: | |
480 | return QAbstractScrollArea::viewportEvent(e); | |
481 | } | |
482 | } | |
483 | ||
484 | void View::resizeEvent(QResizeEvent*) | |
485 | { | |
486 | update_layout(); | |
487 | } | |
488 | ||
489 | void View::h_scroll_value_changed(int value) | |
490 | { | |
491 | if (_updating_scroll) | |
492 | return; | |
493 | ||
494 | const int range = horizontalScrollBar()->maximum(); | |
495 | if (range < MaxScrollValue) | |
496 | _offset = _scale * value; | |
497 | else { | |
498 | double length = 0, offset; | |
499 | get_scroll_layout(length, offset); | |
500 | _offset = _scale * length * value / MaxScrollValue; | |
501 | } | |
502 | ||
503 | _ruler->update(); | |
504 | _cursorheader->update(); | |
505 | _viewport->update(); | |
506 | } | |
507 | ||
508 | void View::v_scroll_value_changed(int value) | |
509 | { | |
510 | _v_offset = value; | |
511 | _header->update(); | |
512 | _viewport->update(); | |
513 | } | |
514 | ||
515 | void View::signals_changed() | |
516 | { | |
517 | int offset = SignalMargin + SignalHeight; | |
518 | const vector< shared_ptr<Trace> > traces(get_traces()); | |
519 | for (shared_ptr<Trace> t : traces) { | |
520 | t->set_view(this); | |
521 | t->set_v_offset(offset); | |
522 | offset += SignalHeight + 2 * SignalMargin; | |
523 | } | |
524 | ||
525 | update_layout(); | |
526 | normalize_layout(); | |
527 | } | |
528 | ||
529 | void View::data_updated() | |
530 | { | |
531 | // Update the scroll bars | |
532 | update_scroll(); | |
533 | ||
534 | // Repaint the view | |
535 | _viewport->update(); | |
536 | } | |
537 | ||
538 | void View::marker_time_changed() | |
539 | { | |
540 | _cursorheader->update(); | |
541 | _viewport->update(); | |
542 | } | |
543 | ||
544 | void View::on_signals_moved() | |
545 | { | |
546 | update_scroll(); | |
547 | signals_moved(); | |
548 | } | |
549 | ||
550 | void View::on_geometry_updated() | |
551 | { | |
552 | update_layout(); | |
553 | } | |
554 | ||
555 | } // namespace view | |
556 | } // namespace pv |