]> sigrok.org Git - pulseview.git/blob - pv/view/analogsignal.cpp
Use alphabetical order for #includes.
[pulseview.git] / pv / view / analogsignal.cpp
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, see <http://www.gnu.org/licenses/>.
18  */
19
20 #include <extdef.h>
21
22 #include <cassert>
23 #include <cmath>
24 #include <cstdlib>
25 #include <limits>
26 #include <vector>
27
28 #include <QApplication>
29 #include <QCheckBox>
30 #include <QComboBox>
31 #include <QFormLayout>
32 #include <QGridLayout>
33 #include <QLabel>
34 #include <QSpinBox>
35 #include <QString>
36
37 #include "analogsignal.hpp"
38 #include "pv/data/analog.hpp"
39 #include "pv/data/analogsegment.hpp"
40 #include "pv/data/logic.hpp"
41 #include "pv/data/logicsegment.hpp"
42 #include "pv/data/signalbase.hpp"
43 #include "pv/globalsettings.hpp"
44 #include "pv/view/logicsignal.hpp"
45 #include "pv/view/view.hpp"
46
47 #include <libsigrokcxx/libsigrokcxx.hpp>
48
49 using std::deque;
50 using std::div;
51 using std::div_t;
52 using std::max;
53 using std::make_pair;
54 using std::min;
55 using std::numeric_limits;
56 using std::pair;
57 using std::shared_ptr;
58 using std::vector;
59
60 namespace pv {
61 namespace views {
62 namespace TraceView {
63
64 const QColor AnalogSignal::SignalColours[4] = {
65         QColor(0xC4, 0xA0, 0x00),       // Yellow
66         QColor(0x87, 0x20, 0x7A),       // Magenta
67         QColor(0x20, 0x4A, 0x87),       // Blue
68         QColor(0x4E, 0x9A, 0x06)        // Green
69 };
70
71 const QColor AnalogSignal::GridMajorColor = QColor(0, 0, 0, 40 * 256 / 100);
72 const QColor AnalogSignal::GridMinorColor = QColor(0, 0, 0, 20 * 256 / 100);
73
74 const QColor AnalogSignal::SamplingPointColour(0x77, 0x77, 0x77);
75
76 const int64_t AnalogSignal::TracePaintBlockSize = 1024 * 1024;  // 4 MiB (due to float)
77 const float AnalogSignal::EnvelopeThreshold = 64.0f;
78
79 const int AnalogSignal::MaximumVDivs = 10;
80 const int AnalogSignal::MinScaleIndex = -6;
81 const int AnalogSignal::MaxScaleIndex = 7;
82
83 const int AnalogSignal::InfoTextMarginRight = 20;
84 const int AnalogSignal::InfoTextMarginBottom = 5;
85
86 AnalogSignal::AnalogSignal(
87         pv::Session &session,
88         shared_ptr<data::SignalBase> base) :
89         Signal(session, base),
90         scale_index_(4), // 20 per div
91         scale_index_drag_offset_(0),
92         div_height_(3 * QFontMetrics(QApplication::font()).height()),
93         pos_vdivs_(1),
94         neg_vdivs_(1),
95         resolution_(0),
96         conversion_type_(data::SignalBase::NoConversion),
97         display_type_(DisplayBoth),
98         autoranging_(true)
99 {
100         pv::data::Analog* analog_data =
101                 dynamic_cast<pv::data::Analog*>(data().get());
102
103         connect(analog_data, SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
104                 this, SLOT(on_samples_added()));
105
106         base_->set_colour(SignalColours[base_->index() % countof(SignalColours)]);
107         update_scale();
108 }
109
110 shared_ptr<pv::data::SignalData> AnalogSignal::data() const
111 {
112         return base_->analog_data();
113 }
114
115 void AnalogSignal::save_settings(QSettings &settings) const
116 {
117         settings.setValue("pos_vdivs", pos_vdivs_);
118         settings.setValue("neg_vdivs", neg_vdivs_);
119         settings.setValue("scale_index", scale_index_);
120         settings.setValue("conversion_type", conversion_type_);
121         settings.setValue("display_type", display_type_);
122         settings.setValue("autoranging", autoranging_);
123 }
124
125 void AnalogSignal::restore_settings(QSettings &settings)
126 {
127         if (settings.contains("pos_vdivs"))
128                 pos_vdivs_ = settings.value("pos_vdivs").toInt();
129
130         if (settings.contains("neg_vdivs"))
131                 neg_vdivs_ = settings.value("neg_vdivs").toInt();
132
133         if (settings.contains("scale_index")) {
134                 scale_index_ = settings.value("scale_index").toInt();
135                 update_scale();
136         }
137
138         if (settings.contains("conversion_type")) {
139                 conversion_type_ = (data::SignalBase::ConversionType)(settings.value("conversion_type").toInt());
140                 update_conversion_type();
141         }
142
143         if (settings.contains("display_type"))
144                 display_type_ = (DisplayType)(settings.value("display_type").toInt());
145
146         if (settings.contains("autoranging"))
147                 autoranging_ = settings.value("autoranging").toBool();
148 }
149
150 pair<int, int> AnalogSignal::v_extents() const
151 {
152         const int ph = pos_vdivs_ * div_height_;
153         const int nh = neg_vdivs_ * div_height_;
154         return make_pair(-ph, nh);
155 }
156
157 int AnalogSignal::scale_handle_offset() const
158 {
159         const int h = (pos_vdivs_ + neg_vdivs_) * div_height_;
160
161         return ((scale_index_drag_offset_ - scale_index_) * h / 4) - h / 2;
162 }
163
164 void AnalogSignal::scale_handle_dragged(int offset)
165 {
166         const int h = (pos_vdivs_ + neg_vdivs_) * div_height_;
167
168         scale_index_ = scale_index_drag_offset_ - (offset + h / 2) / (h / 4);
169
170         update_scale();
171 }
172
173 void AnalogSignal::scale_handle_drag_release()
174 {
175         scale_index_drag_offset_ = scale_index_;
176         update_scale();
177 }
178
179 void AnalogSignal::paint_back(QPainter &p, const ViewItemPaintParams &pp)
180 {
181         if (base_->enabled()) {
182                 Trace::paint_back(p, pp);
183                 paint_axis(p, pp, get_visual_y());
184         }
185 }
186
187 void AnalogSignal::paint_mid(QPainter &p, const ViewItemPaintParams &pp)
188 {
189         assert(base_->analog_data());
190         assert(owner_);
191
192         const int y = get_visual_y();
193
194         if (!base_->enabled())
195                 return;
196
197         if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
198                 paint_grid(p, y, pp.left(), pp.right());
199
200                 const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
201                         base_->analog_data()->analog_segments();
202                 if (segments.empty())
203                         return;
204
205                 const shared_ptr<pv::data::AnalogSegment> &segment =
206                         segments.front();
207
208                 const double pixels_offset = pp.pixels_offset();
209                 const double samplerate = max(1.0, segment->samplerate());
210                 const pv::util::Timestamp& start_time = segment->start_time();
211                 const int64_t last_sample = segment->get_sample_count() - 1;
212                 const double samples_per_pixel = samplerate * pp.scale();
213                 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
214                 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
215
216                 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
217                         (int64_t)0), last_sample);
218                 const int64_t end_sample = min(max((ceil(end) + 1).convert_to<int64_t>(),
219                         (int64_t)0), last_sample);
220
221                 if (samples_per_pixel < EnvelopeThreshold)
222                         paint_trace(p, segment, y, pp.left(),
223                                 start_sample, end_sample,
224                                 pixels_offset, samples_per_pixel);
225                 else
226                         paint_envelope(p, segment, y, pp.left(),
227                                 start_sample, end_sample,
228                                 pixels_offset, samples_per_pixel);
229         }
230
231         if ((display_type_ == DisplayConverted) || (display_type_ == DisplayBoth)) {
232                 if (((conversion_type_ == data::SignalBase::A2LConversionByTreshold) ||
233                         (conversion_type_ == data::SignalBase::A2LConversionBySchmittTrigger))) {
234
235                         paint_logic_mid(p, pp);
236                 }
237         }
238 }
239
240 void AnalogSignal::paint_fore(QPainter &p, const ViewItemPaintParams &pp)
241 {
242         if (!enabled())
243                 return;
244
245         if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
246                 const int y = get_visual_y();
247
248                 // Show the info section on the right side of the trace
249                 const QString infotext = QString("%1 V/div").arg(resolution_);
250
251                 p.setPen(base_->colour());
252                 p.setFont(QApplication::font());
253
254                 const QRectF bounding_rect = QRectF(pp.left(),
255                                 y + v_extents().first,
256                                 pp.width() - InfoTextMarginRight,
257                                 v_extents().second - v_extents().first - InfoTextMarginBottom);
258
259                 p.drawText(bounding_rect, Qt::AlignRight | Qt::AlignBottom, infotext);
260         }
261 }
262
263 void AnalogSignal::paint_grid(QPainter &p, int y, int left, int right)
264 {
265         p.setRenderHint(QPainter::Antialiasing, false);
266
267         if (pos_vdivs_ > 0) {
268                 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
269                 for (int i = 1; i <= pos_vdivs_; i++) {
270                         const float dy = i * div_height_;
271                         p.drawLine(QLineF(left, y - dy, right, y - dy));
272                 }
273
274                 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
275                 for (int i = 0; i < pos_vdivs_; i++) {
276                         const float dy = i * div_height_;
277                         const float dy25 = dy + (0.25 * div_height_);
278                         const float dy50 = dy + (0.50 * div_height_);
279                         const float dy75 = dy + (0.75 * div_height_);
280                         p.drawLine(QLineF(left, y - dy25, right, y - dy25));
281                         p.drawLine(QLineF(left, y - dy50, right, y - dy50));
282                         p.drawLine(QLineF(left, y - dy75, right, y - dy75));
283                 }
284         }
285
286         if (neg_vdivs_ > 0) {
287                 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
288                 for (int i = 1; i <= neg_vdivs_; i++) {
289                         const float dy = i * div_height_;
290                         p.drawLine(QLineF(left, y + dy, right, y + dy));
291                 }
292
293                 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
294                 for (int i = 0; i < neg_vdivs_; i++) {
295                         const float dy = i * div_height_;
296                         const float dy25 = dy + (0.25 * div_height_);
297                         const float dy50 = dy + (0.50 * div_height_);
298                         const float dy75 = dy + (0.75 * div_height_);
299                         p.drawLine(QLineF(left, y + dy25, right, y + dy25));
300                         p.drawLine(QLineF(left, y + dy50, right, y + dy50));
301                         p.drawLine(QLineF(left, y + dy75, right, y + dy75));
302                 }
303         }
304
305         p.setRenderHint(QPainter::Antialiasing, true);
306 }
307
308 void AnalogSignal::paint_trace(QPainter &p,
309         const shared_ptr<pv::data::AnalogSegment> &segment,
310         int y, int left, const int64_t start, const int64_t end,
311         const double pixels_offset, const double samples_per_pixel)
312 {
313         if (end <= start)
314                 return;
315
316         // Calculate and paint the sampling points if enabled and useful
317         GlobalSettings settings;
318         const bool show_sampling_points =
319                 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() &&
320                 (samples_per_pixel < 0.25);
321
322         p.setPen(base_->colour());
323
324         const int64_t points_count = end - start;
325
326         QPointF *points = new QPointF[points_count];
327         QPointF *point = points;
328
329         QRectF *sampling_points = nullptr;
330         if (show_sampling_points)
331                  sampling_points = new QRectF[points_count];
332         QRectF *sampling_point = sampling_points;
333
334         int64_t sample_count = min(points_count, TracePaintBlockSize);
335         int64_t block_sample = 0;
336         const float *sample_block = segment->get_samples(start, start + sample_count);
337
338         const int w = 2;
339         for (int64_t sample = start; sample != end; sample++, block_sample++) {
340
341                 if (block_sample == TracePaintBlockSize) {
342                         block_sample = 0;
343                         delete[] sample_block;
344                         sample_count = min(points_count - sample, TracePaintBlockSize);
345                         sample_block = segment->get_samples(sample, sample + sample_count);
346                 }
347
348                 const float x = (sample / samples_per_pixel -
349                         pixels_offset) + left;
350
351                 *point++ = QPointF(x, y - sample_block[block_sample] * scale_);
352
353                 if (show_sampling_points)
354                         *sampling_point++ =
355                                 QRectF(x - (w / 2), y - sample_block[block_sample] * scale_ - (w / 2), w, w);
356         }
357         delete[] sample_block;
358
359         p.drawPolyline(points, points_count);
360
361         if (show_sampling_points) {
362                 p.setPen(SamplingPointColour);
363                 p.drawRects(sampling_points, points_count);
364                 delete[] sampling_points;
365         }
366
367         delete[] points;
368 }
369
370 void AnalogSignal::paint_envelope(QPainter &p,
371         const shared_ptr<pv::data::AnalogSegment> &segment,
372         int y, int left, const int64_t start, const int64_t end,
373         const double pixels_offset, const double samples_per_pixel)
374 {
375         using pv::data::AnalogSegment;
376
377         AnalogSegment::EnvelopeSection e;
378         segment->get_envelope_section(e, start, end, samples_per_pixel);
379
380         if (e.length < 2)
381                 return;
382
383         p.setPen(QPen(Qt::NoPen));
384         p.setBrush(base_->colour());
385
386         QRectF *const rects = new QRectF[e.length];
387         QRectF *rect = rects;
388
389         for (uint64_t sample = 0; sample < e.length - 1; sample++) {
390                 const float x = ((e.scale * sample + e.start) /
391                         samples_per_pixel - pixels_offset) + left;
392                 const AnalogSegment::EnvelopeSample *const s =
393                         e.samples + sample;
394
395                 // We overlap this sample with the next so that vertical
396                 // gaps do not appear during steep rising or falling edges
397                 const float b = y - max(s->max, (s + 1)->min) * scale_;
398                 const float t = y - min(s->min, (s + 1)->max) * scale_;
399
400                 float h = b - t;
401                 if (h >= 0.0f && h <= 1.0f)
402                         h = 1.0f;
403                 if (h <= 0.0f && h >= -1.0f)
404                         h = -1.0f;
405
406                 *rect++ = QRectF(x, t, 1.0f, h);
407         }
408
409         p.drawRects(rects, e.length);
410
411         delete[] rects;
412         delete[] e.samples;
413 }
414
415 void AnalogSignal::paint_logic_mid(QPainter &p, const ViewItemPaintParams &pp)
416 {
417         QLineF *line;
418
419         vector< pair<int64_t, bool> > edges;
420
421         assert(base_);
422
423         const int y = get_visual_y();
424
425         if (!base_->enabled())
426                 return;
427
428         const int signal_margin =
429                 QFontMetrics(QApplication::font()).height() / 2;
430
431         const int ph = min(pos_vdivs_, 1) * div_height_;
432         const int nh = min(neg_vdivs_, 1) * div_height_;
433         const float high_offset = y - ph + signal_margin + 0.5f;
434         const float low_offset = y + nh - signal_margin - 0.5f;
435
436         const deque< shared_ptr<pv::data::LogicSegment> > &segments =
437                 base_->logic_data()->logic_segments();
438         if (segments.empty())
439                 return;
440
441         const shared_ptr<pv::data::LogicSegment> &segment =
442                 segments.front();
443
444         double samplerate = segment->samplerate();
445
446         // Show sample rate as 1Hz when it is unknown
447         if (samplerate == 0.0)
448                 samplerate = 1.0;
449
450         const double pixels_offset = pp.pixels_offset();
451         const pv::util::Timestamp& start_time = segment->start_time();
452         const int64_t last_sample = segment->get_sample_count() - 1;
453         const double samples_per_pixel = samplerate * pp.scale();
454         const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
455         const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
456
457         const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
458                 (int64_t)0), last_sample);
459         const uint64_t end_sample = min(max(ceil(end).convert_to<int64_t>(),
460                 (int64_t)0), last_sample);
461
462         segment->get_subsampled_edges(edges, start_sample, end_sample,
463                 samples_per_pixel / LogicSignal::Oversampling, 0);
464         assert(edges.size() >= 2);
465
466         // Paint the edges
467         const unsigned int edge_count = edges.size() - 2;
468         QLineF *const edge_lines = new QLineF[edge_count];
469         line = edge_lines;
470
471         for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
472                 const float x = ((*i).first / samples_per_pixel -
473                         pixels_offset) + pp.left();
474                 *line++ = QLineF(x, high_offset, x, low_offset);
475         }
476
477         p.setPen(LogicSignal::EdgeColour);
478         p.drawLines(edge_lines, edge_count);
479         delete[] edge_lines;
480
481         // Paint the caps
482         const unsigned int max_cap_line_count = edges.size();
483         QLineF *const cap_lines = new QLineF[max_cap_line_count];
484
485         p.setPen(LogicSignal::HighColour);
486         paint_logic_caps(p, cap_lines, edges, true, samples_per_pixel,
487                 pixels_offset, pp.left(), high_offset);
488         p.setPen(LogicSignal::LowColour);
489         paint_logic_caps(p, cap_lines, edges, false, samples_per_pixel,
490                 pixels_offset, pp.left(), low_offset);
491
492         delete[] cap_lines;
493
494         // Return if we don't need to paint the sampling points
495         GlobalSettings settings;
496         const bool show_sampling_points =
497                 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();
498
499         if (!show_sampling_points || (samples_per_pixel >= 0.25))
500                 return;
501
502         // Paint the sampling points
503         const uint64_t sampling_points_count = end_sample - start_sample + 1;
504         QRectF *const sampling_points = new QRectF[sampling_points_count];
505         QRectF *sampling_point = sampling_points;
506
507         const int w = 1;
508         const float y_middle = high_offset - ((high_offset - low_offset) / 2);
509         for (uint64_t i = start_sample; i < end_sample + 1; ++i) {
510                 const float x = (i / samples_per_pixel - pixels_offset) + pp.left();
511                 *sampling_point++ = QRectF(x - (w / 2), y_middle - (w / 2), w, w);
512         }
513
514         p.setPen(SamplingPointColour);
515         p.drawRects(sampling_points, sampling_points_count);
516         delete[] sampling_points;
517 }
518
519 void AnalogSignal::paint_logic_caps(QPainter &p, QLineF *const lines,
520         vector< pair<int64_t, bool> > &edges, bool level,
521         double samples_per_pixel, double pixels_offset, float x_offset,
522         float y_offset)
523 {
524         QLineF *line = lines;
525
526         for (auto i = edges.begin(); i != (edges.end() - 1); i++)
527                 if ((*i).second == level) {
528                         *line++ = QLineF(
529                                 ((*i).first / samples_per_pixel -
530                                         pixels_offset) + x_offset, y_offset,
531                                 ((*(i+1)).first / samples_per_pixel -
532                                         pixels_offset) + x_offset, y_offset);
533                 }
534
535         p.drawLines(lines, line - lines);
536 }
537
538 float AnalogSignal::get_resolution(int scale_index)
539 {
540         const float seq[] = {1.0f, 2.0f, 5.0f};
541
542         const int offset = numeric_limits<int>::max() / (2 * countof(seq));
543         const div_t d = div((int)(scale_index + countof(seq) * offset),
544                 countof(seq));
545
546         return powf(10.0f, d.quot - offset) * seq[d.rem];
547 }
548
549 void AnalogSignal::update_scale()
550 {
551         resolution_ = get_resolution(scale_index_);
552         scale_ = div_height_ / resolution_;
553 }
554
555 void AnalogSignal::update_conversion_type()
556 {
557         base_->set_conversion_type(conversion_type_);
558
559         if (owner_)
560                 owner_->row_item_appearance_changed(false, true);
561 }
562
563 void AnalogSignal::perform_autoranging(bool force_update)
564 {
565         const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
566                 base_->analog_data()->analog_segments();
567
568         if (segments.empty())
569                 return;
570
571         static double prev_min = 0, prev_max = 0;
572         double min = 0, max = 0;
573
574         for (shared_ptr<pv::data::AnalogSegment> segment : segments) {
575                 pair<double, double> mm = segment->get_min_max();
576                 min = std::min(min, mm.first);
577                 max = std::max(max, mm.second);
578         }
579
580         if ((min == prev_min) && (max == prev_max) && !force_update)
581                 return;
582
583         prev_min = min;
584         prev_max = max;
585
586         // Use all divs for the positive range if there are no negative values
587         if ((min == 0) && (neg_vdivs_ > 0)) {
588                 pos_vdivs_ += neg_vdivs_;
589                 neg_vdivs_ = 0;
590         }
591
592         // Split up the divs if there are negative values but no negative divs
593         if ((min < 0) && (neg_vdivs_ == 0)) {
594                 neg_vdivs_ = pos_vdivs_ / 2;
595                 pos_vdivs_ -= neg_vdivs_;
596         }
597
598         double min_value_per_div;
599         if ((pos_vdivs_ > 0) && (neg_vdivs_ >  0))
600                 min_value_per_div = std::max(max / pos_vdivs_, -min / neg_vdivs_);
601         else if (pos_vdivs_ > 0)
602                 min_value_per_div = max / pos_vdivs_;
603         else
604                 min_value_per_div = -min / neg_vdivs_;
605
606         // Find first scale value that is bigger than the value we need
607         for (int i = MinScaleIndex; i < MaxScaleIndex; i++)
608                 if (get_resolution(i) > min_value_per_div) {
609                         scale_index_ = i;
610                         break;
611                 }
612
613         update_scale();
614 }
615
616 void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
617 {
618         // Add the standard options
619         Signal::populate_popup_form(parent, form);
620
621         QFormLayout *const layout = new QFormLayout;
622
623         // Add the number of vdivs
624         QSpinBox *pvdiv_sb = new QSpinBox(parent);
625         pvdiv_sb->setRange(0, MaximumVDivs);
626         pvdiv_sb->setValue(pos_vdivs_);
627         connect(pvdiv_sb, SIGNAL(valueChanged(int)),
628                 this, SLOT(on_pos_vdivs_changed(int)));
629         layout->addRow(tr("Number of pos vertical divs"), pvdiv_sb);
630
631         QSpinBox *nvdiv_sb = new QSpinBox(parent);
632         nvdiv_sb->setRange(0, MaximumVDivs);
633         nvdiv_sb->setValue(neg_vdivs_);
634         connect(nvdiv_sb, SIGNAL(valueChanged(int)),
635                 this, SLOT(on_neg_vdivs_changed(int)));
636         layout->addRow(tr("Number of neg vertical divs"), nvdiv_sb);
637
638         // Add the vertical resolution
639         resolution_cb_ = new QComboBox(parent);
640
641         for (int i = MinScaleIndex; i < MaxScaleIndex; i++) {
642                 const QString label = QString("%1").arg(get_resolution(i));
643                 resolution_cb_->insertItem(0, label, QVariant(i));
644         }
645
646         int cur_idx = resolution_cb_->findData(QVariant(scale_index_));
647         resolution_cb_->setCurrentIndex(cur_idx);
648
649         connect(resolution_cb_, SIGNAL(currentIndexChanged(int)),
650                 this, SLOT(on_resolution_changed(int)));
651
652         QGridLayout *const vdiv_layout = new QGridLayout;
653         QLabel *const vdiv_unit = new QLabel(tr("V/div"));
654         vdiv_layout->addWidget(resolution_cb_, 0, 0);
655         vdiv_layout->addWidget(vdiv_unit, 0, 1);
656
657         layout->addRow(tr("Vertical resolution"), vdiv_layout);
658
659         // Add the autoranging checkbox
660         QCheckBox* autoranging_cb = new QCheckBox();
661         autoranging_cb->setCheckState(autoranging_ ? Qt::Checked : Qt::Unchecked);
662
663         connect(autoranging_cb, SIGNAL(stateChanged(int)),
664                 this, SLOT(on_autoranging_changed(int)));
665
666         layout->addRow(tr("Autoranging"), autoranging_cb);
667
668         // Add the conversion type dropdown
669         conversion_cb_ = new QComboBox();
670
671         conversion_cb_->addItem("none", data::SignalBase::NoConversion);
672         conversion_cb_->addItem("to logic via threshold", data::SignalBase::A2LConversionByTreshold);
673         conversion_cb_->addItem("to logic via schmitt-trigger", data::SignalBase::A2LConversionBySchmittTrigger);
674
675         cur_idx = conversion_cb_->findData(QVariant(conversion_type_));
676         conversion_cb_->setCurrentIndex(cur_idx);
677
678         layout->addRow(tr("Conversion"), conversion_cb_);
679
680         connect(conversion_cb_, SIGNAL(currentIndexChanged(int)),
681                 this, SLOT(on_conversion_changed(int)));
682
683         // Add the display type dropdown
684         display_type_cb_ = new QComboBox();
685
686         display_type_cb_->addItem(tr("Analog"), DisplayAnalog);
687         display_type_cb_->addItem(tr("Converted"), DisplayConverted);
688         display_type_cb_->addItem(tr("Both"), DisplayBoth);
689
690         cur_idx = display_type_cb_->findData(QVariant(display_type_));
691         display_type_cb_->setCurrentIndex(cur_idx);
692
693         layout->addRow(tr("Traces to show:"), display_type_cb_);
694
695         connect(display_type_cb_, SIGNAL(currentIndexChanged(int)),
696                 this, SLOT(on_display_type_changed(int)));
697
698         form->addRow(layout);
699 }
700
701 void AnalogSignal::on_samples_added()
702 {
703         perform_autoranging();
704
705         if (owner_) {
706                 // Call order is important, otherwise the lazy event handler won't work
707                 owner_->extents_changed(false, true);
708                 owner_->row_item_appearance_changed(false, true);
709         }
710 }
711
712 void AnalogSignal::on_pos_vdivs_changed(int vdivs)
713 {
714         pos_vdivs_ = vdivs;
715
716         if (autoranging_)
717                 perform_autoranging(true);
718
719         if (owner_) {
720                 // Call order is important, otherwise the lazy event handler won't work
721                 owner_->extents_changed(false, true);
722                 owner_->row_item_appearance_changed(false, true);
723         }
724 }
725
726 void AnalogSignal::on_neg_vdivs_changed(int vdivs)
727 {
728         neg_vdivs_ = vdivs;
729
730         if (autoranging_)
731                 perform_autoranging(true);
732
733         if (owner_) {
734                 // Call order is important, otherwise the lazy event handler won't work
735                 owner_->extents_changed(false, true);
736                 owner_->row_item_appearance_changed(false, true);
737         }
738 }
739
740 void AnalogSignal::on_resolution_changed(int index)
741 {
742         scale_index_ = resolution_cb_->itemData(index).toInt();
743         update_scale();
744
745         if (owner_)
746                 owner_->row_item_appearance_changed(false, true);
747 }
748
749 void AnalogSignal::on_autoranging_changed(int state)
750 {
751         autoranging_ = (state == Qt::Checked);
752
753         if (autoranging_)
754                 perform_autoranging(true);
755
756         if (owner_) {
757                 // Call order is important, otherwise the lazy event handler won't work
758                 owner_->extents_changed(false, true);
759                 owner_->row_item_appearance_changed(false, true);
760         }
761 }
762
763 void AnalogSignal::on_conversion_changed(int index)
764 {
765         data::SignalBase::ConversionType old_conv_type = conversion_type_;
766
767         conversion_type_ = (data::SignalBase::ConversionType)(conversion_cb_->itemData(index).toInt());
768
769         if (conversion_type_ != old_conv_type) {
770                 base_->set_conversion_type(conversion_type_);
771                 update_conversion_type();
772         }
773 }
774
775 void AnalogSignal::on_display_type_changed(int index)
776 {
777         display_type_ = (DisplayType)(display_type_cb_->itemData(index).toInt());
778
779         if (owner_)
780                 owner_->row_item_appearance_changed(false, true);
781 }
782
783 } // namespace TraceView
784 } // namespace views
785 } // namespace pv