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