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