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