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