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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 | #include <libsigrokdecode/libsigrokdecode.h> | |
22 | ||
23 | #include <assert.h> | |
24 | #include <limits.h> | |
25 | #include <math.h> | |
26 | ||
27 | #include <set> | |
28 | ||
29 | #include <boost/foreach.hpp> | |
30 | ||
31 | #include <QEvent> | |
32 | #include <QMouseEvent> | |
33 | #include <QScrollBar> | |
34 | ||
35 | #include "decodetrace.h" | |
36 | #include "header.h" | |
37 | #include "ruler.h" | |
38 | #include "signal.h" | |
39 | #include "view.h" | |
40 | #include "viewport.h" | |
41 | ||
42 | #include "pv/sigsession.h" | |
43 | #include "pv/data/logic.h" | |
44 | #include "pv/data/logicsnapshot.h" | |
45 | ||
46 | using namespace boost; | |
47 | using namespace std; | |
48 | ||
49 | namespace pv { | |
50 | namespace view { | |
51 | ||
52 | const double View::MaxScale = 1e9; | |
53 | const double View::MinScale = 1e-15; | |
54 | ||
55 | const int View::MaxScrollValue = INT_MAX / 2; | |
56 | ||
57 | const int View::SignalHeight = 30; | |
58 | const int View::SignalMargin = 10; | |
59 | const int View::SignalSnapGridSize = 10; | |
60 | ||
61 | const QColor View::CursorAreaColour(220, 231, 243); | |
62 | ||
63 | const QSizeF View::LabelPadding(4, 0); | |
64 | ||
65 | View::View(SigSession &session, QWidget *parent) : | |
66 | QAbstractScrollArea(parent), | |
67 | _session(session), | |
68 | _viewport(new Viewport(*this)), | |
69 | _ruler(new Ruler(*this)), | |
70 | _header(new Header(*this)), | |
71 | _data_length(0), | |
72 | _scale(1e-6), | |
73 | _offset(0), | |
74 | _v_offset(0), | |
75 | _updating_scroll(false), | |
76 | _show_cursors(false), | |
77 | _cursors(*this), | |
78 | _hover_point(-1, -1) | |
79 | { | |
80 | connect(horizontalScrollBar(), SIGNAL(valueChanged(int)), | |
81 | this, SLOT(h_scroll_value_changed(int))); | |
82 | connect(verticalScrollBar(), SIGNAL(valueChanged(int)), | |
83 | this, SLOT(v_scroll_value_changed(int))); | |
84 | ||
85 | connect(&_session, SIGNAL(signals_changed()), | |
86 | this, SLOT(signals_changed())); | |
87 | connect(&_session, SIGNAL(data_updated()), | |
88 | this, SLOT(data_updated())); | |
89 | ||
90 | connect(_cursors.first().get(), SIGNAL(time_changed()), | |
91 | this, SLOT(marker_time_changed())); | |
92 | connect(_cursors.second().get(), SIGNAL(time_changed()), | |
93 | this, SLOT(marker_time_changed())); | |
94 | ||
95 | connect(_header, SIGNAL(geometry_updated()), | |
96 | this, SLOT(on_geometry_updated())); | |
97 | connect(_header, SIGNAL(signals_moved()), | |
98 | this, SLOT(on_signals_moved())); | |
99 | ||
100 | connect(_header, SIGNAL(selection_changed()), | |
101 | _ruler, SLOT(clear_selection())); | |
102 | connect(_ruler, SIGNAL(selection_changed()), | |
103 | _header, SLOT(clear_selection())); | |
104 | ||
105 | connect(_header, SIGNAL(selection_changed()), | |
106 | this, SIGNAL(selection_changed())); | |
107 | connect(_ruler, SIGNAL(selection_changed()), | |
108 | this, SIGNAL(selection_changed())); | |
109 | ||
110 | setViewport(_viewport); | |
111 | ||
112 | _viewport->installEventFilter(this); | |
113 | _ruler->installEventFilter(this); | |
114 | _header->installEventFilter(this); | |
115 | } | |
116 | ||
117 | SigSession& View::session() | |
118 | { | |
119 | return _session; | |
120 | } | |
121 | ||
122 | const SigSession& View::session() const | |
123 | { | |
124 | return _session; | |
125 | } | |
126 | ||
127 | double View::scale() const | |
128 | { | |
129 | return _scale; | |
130 | } | |
131 | ||
132 | double View::offset() const | |
133 | { | |
134 | return _offset; | |
135 | } | |
136 | ||
137 | int View::v_offset() const | |
138 | { | |
139 | return _v_offset; | |
140 | } | |
141 | ||
142 | void View::zoom(double steps) | |
143 | { | |
144 | zoom(steps, _viewport->width() / 2); | |
145 | } | |
146 | ||
147 | void View::zoom(double steps, int offset) | |
148 | { | |
149 | const double new_scale = max(min(_scale * pow(3.0/2.0, -steps), | |
150 | MaxScale), MinScale); | |
151 | set_zoom(new_scale, offset); | |
152 | } | |
153 | ||
154 | void View::zoom_fit() | |
155 | { | |
156 | using pv::data::SignalData; | |
157 | ||
158 | const vector< shared_ptr<Signal> > sigs( | |
159 | session().get_signals()); | |
160 | ||
161 | // Make a set of all the visible data objects | |
162 | set< shared_ptr<SignalData> > visible_data; | |
163 | BOOST_FOREACH(const shared_ptr<Signal> sig, sigs) | |
164 | if (sig->enabled()) | |
165 | visible_data.insert(sig->data()); | |
166 | ||
167 | if (visible_data.empty()) | |
168 | return; | |
169 | ||
170 | double left_time = DBL_MAX, right_time = DBL_MIN; | |
171 | BOOST_FOREACH(const shared_ptr<SignalData> d, visible_data) | |
172 | { | |
173 | const double start_time = d->get_start_time(); | |
174 | left_time = min(left_time, start_time); | |
175 | right_time = max(right_time, start_time + | |
176 | d->get_max_sample_count() / d->samplerate()); | |
177 | } | |
178 | ||
179 | assert(left_time < right_time); | |
180 | if (right_time - left_time < 1e-12) | |
181 | return; | |
182 | ||
183 | assert(_viewport); | |
184 | const int w = _viewport->width(); | |
185 | if (w <= 0) | |
186 | return; | |
187 | ||
188 | set_scale_offset((right_time - left_time) / w, left_time); | |
189 | } | |
190 | ||
191 | void View::zoom_one_to_one() | |
192 | { | |
193 | using pv::data::SignalData; | |
194 | ||
195 | const vector< shared_ptr<Signal> > sigs( | |
196 | session().get_signals()); | |
197 | ||
198 | // Make a set of all the visible data objects | |
199 | set< shared_ptr<SignalData> > visible_data; | |
200 | BOOST_FOREACH(const shared_ptr<Signal> sig, sigs) | |
201 | if (sig->enabled()) | |
202 | visible_data.insert(sig->data()); | |
203 | ||
204 | if (visible_data.empty()) | |
205 | return; | |
206 | ||
207 | double samplerate = 0.0; | |
208 | BOOST_FOREACH(const shared_ptr<SignalData> d, visible_data) { | |
209 | assert(d); | |
210 | samplerate = max(samplerate, d->samplerate()); | |
211 | } | |
212 | ||
213 | if (samplerate == 0.0) | |
214 | return; | |
215 | ||
216 | assert(_viewport); | |
217 | const int w = _viewport->width(); | |
218 | if (w <= 0) | |
219 | return; | |
220 | ||
221 | set_zoom(1.0 / samplerate, w / 2); | |
222 | } | |
223 | ||
224 | void View::set_scale_offset(double scale, double offset) | |
225 | { | |
226 | _scale = scale; | |
227 | _offset = offset; | |
228 | ||
229 | update_scroll(); | |
230 | _ruler->update(); | |
231 | _viewport->update(); | |
232 | scale_offset_changed(); | |
233 | } | |
234 | ||
235 | vector< shared_ptr<Trace> > View::get_traces() const | |
236 | { | |
237 | const vector< shared_ptr<Signal> > sigs( | |
238 | session().get_signals()); | |
239 | const vector< shared_ptr<DecodeTrace> > decode_sigs( | |
240 | session().get_decode_signals()); | |
241 | vector< shared_ptr<Trace> > traces( | |
242 | sigs.size() + decode_sigs.size()); | |
243 | ||
244 | vector< shared_ptr<Trace> >::iterator i = traces.begin(); | |
245 | i = copy(sigs.begin(), sigs.end(), i); | |
246 | i = copy(decode_sigs.begin(), decode_sigs.end(), i); | |
247 | ||
248 | stable_sort(traces.begin(), traces.end(), compare_trace_v_offsets); | |
249 | return traces; | |
250 | } | |
251 | ||
252 | list<weak_ptr<SelectableItem> > View::selected_items() const | |
253 | { | |
254 | list<weak_ptr<SelectableItem> > items; | |
255 | ||
256 | // List the selected signals | |
257 | const vector< shared_ptr<Trace> > traces(get_traces()); | |
258 | BOOST_FOREACH (shared_ptr<Trace> t, traces) { | |
259 | assert(t); | |
260 | if (t->selected()) | |
261 | items.push_back(t); | |
262 | } | |
263 | ||
264 | // List the selected cursors | |
265 | if (_cursors.first()->selected()) | |
266 | items.push_back(_cursors.first()); | |
267 | if (_cursors.second()->selected()) | |
268 | items.push_back(_cursors.second()); | |
269 | ||
270 | return items; | |
271 | } | |
272 | ||
273 | bool View::cursors_shown() const | |
274 | { | |
275 | return _show_cursors; | |
276 | } | |
277 | ||
278 | void View::show_cursors(bool show) | |
279 | { | |
280 | _show_cursors = show; | |
281 | _ruler->update(); | |
282 | _viewport->update(); | |
283 | } | |
284 | ||
285 | void View::centre_cursors() | |
286 | { | |
287 | const double time_width = _scale * _viewport->width(); | |
288 | _cursors.first()->set_time(_offset + time_width * 0.4); | |
289 | _cursors.second()->set_time(_offset + time_width * 0.6); | |
290 | _ruler->update(); | |
291 | _viewport->update(); | |
292 | } | |
293 | ||
294 | CursorPair& View::cursors() | |
295 | { | |
296 | return _cursors; | |
297 | } | |
298 | ||
299 | const CursorPair& View::cursors() const | |
300 | { | |
301 | return _cursors; | |
302 | } | |
303 | ||
304 | const QPoint& View::hover_point() const | |
305 | { | |
306 | return _hover_point; | |
307 | } | |
308 | ||
309 | void View::normalize_layout() | |
310 | { | |
311 | const vector< shared_ptr<Trace> > traces(get_traces()); | |
312 | ||
313 | int v_min = INT_MAX; | |
314 | BOOST_FOREACH(const shared_ptr<Trace> t, traces) | |
315 | v_min = min(t->get_v_offset(), v_min); | |
316 | ||
317 | const int delta = -min(v_min, 0); | |
318 | BOOST_FOREACH(shared_ptr<Trace> t, traces) | |
319 | t->set_v_offset(t->get_v_offset() + delta); | |
320 | ||
321 | verticalScrollBar()->setSliderPosition(_v_offset + delta); | |
322 | v_scroll_value_changed(verticalScrollBar()->sliderPosition()); | |
323 | } | |
324 | ||
325 | void View::update_viewport() | |
326 | { | |
327 | assert(_viewport); | |
328 | _viewport->update(); | |
329 | } | |
330 | ||
331 | void View::get_scroll_layout(double &length, double &offset) const | |
332 | { | |
333 | const shared_ptr<data::SignalData> sig_data = _session.get_data(); | |
334 | if (!sig_data) | |
335 | return; | |
336 | ||
337 | length = _data_length / (sig_data->samplerate() * _scale); | |
338 | offset = _offset / _scale; | |
339 | } | |
340 | ||
341 | void View::set_zoom(double scale, int offset) | |
342 | { | |
343 | const double cursor_offset = _offset + _scale * offset; | |
344 | const double new_scale = max(min(scale, MaxScale), MinScale); | |
345 | const double new_offset = cursor_offset - new_scale * offset; | |
346 | set_scale_offset(new_scale, new_offset); | |
347 | } | |
348 | ||
349 | void View::update_scroll() | |
350 | { | |
351 | assert(_viewport); | |
352 | ||
353 | const QSize areaSize = _viewport->size(); | |
354 | ||
355 | // Set the horizontal scroll bar | |
356 | double length = 0, offset = 0; | |
357 | get_scroll_layout(length, offset); | |
358 | length = max(length - areaSize.width(), 0.0); | |
359 | ||
360 | horizontalScrollBar()->setPageStep(areaSize.width() / 2); | |
361 | ||
362 | _updating_scroll = true; | |
363 | ||
364 | if (length < MaxScrollValue) { | |
365 | horizontalScrollBar()->setRange(0, length); | |
366 | horizontalScrollBar()->setSliderPosition(offset); | |
367 | } else { | |
368 | horizontalScrollBar()->setRange(0, MaxScrollValue); | |
369 | horizontalScrollBar()->setSliderPosition( | |
370 | _offset * MaxScrollValue / (_scale * length)); | |
371 | } | |
372 | ||
373 | _updating_scroll = false; | |
374 | ||
375 | // Set the vertical scrollbar | |
376 | verticalScrollBar()->setPageStep(areaSize.height()); | |
377 | verticalScrollBar()->setRange(0, | |
378 | _viewport->get_total_height() + SignalMargin - | |
379 | areaSize.height()); | |
380 | } | |
381 | ||
382 | void View::update_layout() | |
383 | { | |
384 | setViewportMargins(_header->sizeHint().width(), | |
385 | _ruler->sizeHint().height(), 0, 0); | |
386 | _ruler->setGeometry(_viewport->x(), 0, | |
387 | _viewport->width(), _viewport->y()); | |
388 | _header->setGeometry(0, _viewport->y(), | |
389 | _viewport->x(), _viewport->height()); | |
390 | update_scroll(); | |
391 | } | |
392 | ||
393 | bool View::compare_trace_v_offsets(const shared_ptr<Trace> &a, | |
394 | const shared_ptr<Trace> &b) | |
395 | { | |
396 | assert(a); | |
397 | assert(b); | |
398 | return a->get_v_offset() < b->get_v_offset(); | |
399 | } | |
400 | ||
401 | bool View::eventFilter(QObject *object, QEvent *event) | |
402 | { | |
403 | const QEvent::Type type = event->type(); | |
404 | if (type == QEvent::MouseMove) { | |
405 | ||
406 | const QMouseEvent *const mouse_event = (QMouseEvent*)event; | |
407 | if (object == _viewport) | |
408 | _hover_point = mouse_event->pos(); | |
409 | else if (object == _ruler) | |
410 | _hover_point = QPoint(mouse_event->x(), 0); | |
411 | else if (object == _header) | |
412 | _hover_point = QPoint(0, mouse_event->y()); | |
413 | else | |
414 | _hover_point = QPoint(-1, -1); | |
415 | ||
416 | hover_point_changed(); | |
417 | ||
418 | } else if (type == QEvent::Leave) { | |
419 | _hover_point = QPoint(-1, -1); | |
420 | hover_point_changed(); | |
421 | } | |
422 | ||
423 | return QObject::eventFilter(object, event); | |
424 | } | |
425 | ||
426 | bool View::viewportEvent(QEvent *e) | |
427 | { | |
428 | switch(e->type()) { | |
429 | case QEvent::Paint: | |
430 | case QEvent::MouseButtonPress: | |
431 | case QEvent::MouseButtonRelease: | |
432 | case QEvent::MouseButtonDblClick: | |
433 | case QEvent::MouseMove: | |
434 | case QEvent::Wheel: | |
435 | return false; | |
436 | ||
437 | default: | |
438 | return QAbstractScrollArea::viewportEvent(e); | |
439 | } | |
440 | } | |
441 | ||
442 | void View::resizeEvent(QResizeEvent*) | |
443 | { | |
444 | update_layout(); | |
445 | } | |
446 | ||
447 | void View::h_scroll_value_changed(int value) | |
448 | { | |
449 | if (_updating_scroll) | |
450 | return; | |
451 | ||
452 | const int range = horizontalScrollBar()->maximum(); | |
453 | if (range < MaxScrollValue) | |
454 | _offset = _scale * value; | |
455 | else { | |
456 | double length = 0, offset; | |
457 | get_scroll_layout(length, offset); | |
458 | _offset = _scale * length * value / MaxScrollValue; | |
459 | } | |
460 | ||
461 | _ruler->update(); | |
462 | _viewport->update(); | |
463 | } | |
464 | ||
465 | void View::v_scroll_value_changed(int value) | |
466 | { | |
467 | _v_offset = value; | |
468 | _header->update(); | |
469 | _viewport->update(); | |
470 | } | |
471 | ||
472 | void View::signals_changed() | |
473 | { | |
474 | int offset = SignalMargin + SignalHeight; | |
475 | const vector< shared_ptr<Trace> > traces(get_traces()); | |
476 | BOOST_FOREACH(shared_ptr<Trace> t, traces) { | |
477 | t->set_view(this); | |
478 | t->set_v_offset(offset); | |
479 | offset += SignalHeight + 2 * SignalMargin; | |
480 | } | |
481 | ||
482 | update_layout(); | |
483 | normalize_layout(); | |
484 | } | |
485 | ||
486 | void View::data_updated() | |
487 | { | |
488 | // Get the new data length | |
489 | _data_length = 0; | |
490 | shared_ptr<data::Logic> sig_data = _session.get_data(); | |
491 | if (sig_data) { | |
492 | deque< shared_ptr<data::LogicSnapshot> > &snapshots = | |
493 | sig_data->get_snapshots(); | |
494 | BOOST_FOREACH(shared_ptr<data::LogicSnapshot> s, snapshots) | |
495 | if (s) | |
496 | _data_length = max(_data_length, | |
497 | s->get_sample_count()); | |
498 | } | |
499 | ||
500 | // Update the scroll bars | |
501 | update_scroll(); | |
502 | ||
503 | // Repaint the view | |
504 | _viewport->update(); | |
505 | } | |
506 | ||
507 | void View::marker_time_changed() | |
508 | { | |
509 | _ruler->update(); | |
510 | _viewport->update(); | |
511 | } | |
512 | ||
513 | void View::on_signals_moved() | |
514 | { | |
515 | update_scroll(); | |
516 | signals_moved(); | |
517 | } | |
518 | ||
519 | void View::on_geometry_updated() | |
520 | { | |
521 | update_layout(); | |
522 | } | |
523 | ||
524 | } // namespace view | |
525 | } // namespace pv |