2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
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/>.
28 #include <QApplication>
32 #include <QFormLayout>
33 #include <QGridLayout>
37 #include "analogsignal.hpp"
38 #include "logicsignal.hpp"
41 #include "pv/util.hpp"
42 #include "pv/data/analog.hpp"
43 #include "pv/data/analogsegment.hpp"
44 #include "pv/data/logic.hpp"
45 #include "pv/data/logicsegment.hpp"
46 #include "pv/data/signalbase.hpp"
47 #include "pv/globalsettings.hpp"
49 #include <libsigrokcxx/libsigrokcxx.hpp>
54 // Note that "using std::isnan;" is _not_ put here since that would break
55 // compilation on some platforms. Use "std::isnan()" instead in checks below.
59 using std::numeric_limits;
60 using std::out_of_range;
62 using std::shared_ptr;
65 using pv::data::SignalBase;
66 using pv::util::SIPrefix;
72 const QColor AnalogSignal::SignalColors[4] = {
73 QColor(0xC4, 0xA0, 0x00), // Yellow
74 QColor(0x87, 0x20, 0x7A), // Magenta
75 QColor(0x20, 0x4A, 0x87), // Blue
76 QColor(0x4E, 0x9A, 0x06) // Green
79 const QPen AnalogSignal::AxisPen(QColor(0, 0, 0, 30 * 256 / 100), 2);
80 const QColor AnalogSignal::GridMajorColor = QColor(0, 0, 0, 40 * 256 / 100);
81 const QColor AnalogSignal::GridMinorColor = QColor(0, 0, 0, 20 * 256 / 100);
83 const QColor AnalogSignal::SamplingPointColor(0x77, 0x77, 0x77);
84 const QColor AnalogSignal::SamplingPointColorLo = QColor(200, 0, 0, 80 * 256 / 100);
85 const QColor AnalogSignal::SamplingPointColorNe = QColor(0, 0, 0, 80 * 256 / 100);
86 const QColor AnalogSignal::SamplingPointColorHi = QColor(0, 200, 0, 80 * 256 / 100);
88 const QColor AnalogSignal::ThresholdColor = QColor(0, 0, 0, 30 * 256 / 100);
89 const QColor AnalogSignal::ThresholdColorLo = QColor(255, 0, 0, 8 * 256 / 100);
90 const QColor AnalogSignal::ThresholdColorNe = QColor(0, 0, 0, 10 * 256 / 100);
91 const QColor AnalogSignal::ThresholdColorHi = QColor(0, 255, 0, 8 * 256 / 100);
93 const int64_t AnalogSignal::TracePaintBlockSize = 1024 * 1024; // 4 MiB (due to float)
94 const float AnalogSignal::EnvelopeThreshold = 64.0f;
96 const int AnalogSignal::MaximumVDivs = 10;
97 const int AnalogSignal::MinScaleIndex = -6;
98 const int AnalogSignal::MaxScaleIndex = 7;
100 const int AnalogSignal::InfoTextMarginRight = 20;
101 const int AnalogSignal::InfoTextMarginBottom = 5;
103 AnalogSignal::AnalogSignal(
104 pv::Session &session,
105 shared_ptr<data::SignalBase> base) :
106 Signal(session, base),
107 scale_index_(4), // 20 per div
108 scale_index_drag_offset_(0),
112 display_type_(DisplayBoth),
117 pv::data::Analog* analog_data =
118 dynamic_cast<pv::data::Analog*>(data().get());
120 connect(analog_data, SIGNAL(min_max_changed(float, float)),
121 this, SLOT(on_min_max_changed(float, float)));
124 conversion_threshold_disp_mode_ =
125 gs.value(GlobalSettings::Key_View_ConversionThresholdDispMode).toInt();
127 div_height_ = gs.value(GlobalSettings::Key_View_DefaultDivHeight).toInt();
129 base_->set_color(SignalColors[base_->index() % countof(SignalColors)]);
133 shared_ptr<pv::data::SignalData> AnalogSignal::data() const
135 return base_->analog_data();
138 void AnalogSignal::save_settings(QSettings &settings) const
140 settings.setValue("pos_vdivs", pos_vdivs_);
141 settings.setValue("neg_vdivs", neg_vdivs_);
142 settings.setValue("scale_index", scale_index_);
143 settings.setValue("display_type", display_type_);
144 settings.setValue("autoranging", autoranging_);
145 settings.setValue("div_height", div_height_);
148 void AnalogSignal::restore_settings(QSettings &settings)
150 if (settings.contains("pos_vdivs"))
151 pos_vdivs_ = settings.value("pos_vdivs").toInt();
153 if (settings.contains("neg_vdivs"))
154 neg_vdivs_ = settings.value("neg_vdivs").toInt();
156 if (settings.contains("scale_index")) {
157 scale_index_ = settings.value("scale_index").toInt();
161 if (settings.contains("display_type"))
162 display_type_ = (DisplayType)(settings.value("display_type").toInt());
164 if (settings.contains("autoranging"))
165 autoranging_ = settings.value("autoranging").toBool();
167 if (settings.contains("div_height")) {
168 const int old_height = div_height_;
169 div_height_ = settings.value("div_height").toInt();
171 if ((div_height_ != old_height) && owner_) {
172 // Call order is important, otherwise the lazy event handler won't work
173 owner_->extents_changed(false, true);
174 owner_->row_item_appearance_changed(false, true);
179 pair<int, int> AnalogSignal::v_extents() const
181 const int ph = pos_vdivs_ * div_height_;
182 const int nh = neg_vdivs_ * div_height_;
183 return make_pair(-ph, nh);
186 int AnalogSignal::scale_handle_offset() const
188 const int h = (pos_vdivs_ + neg_vdivs_) * div_height_;
190 return ((scale_index_drag_offset_ - scale_index_) * h / 4) - h / 2;
193 void AnalogSignal::scale_handle_dragged(int offset)
195 const int h = (pos_vdivs_ + neg_vdivs_) * div_height_;
197 scale_index_ = scale_index_drag_offset_ - (offset + h / 2) / (h / 4);
202 void AnalogSignal::scale_handle_drag_release()
204 scale_index_drag_offset_ = scale_index_;
208 void AnalogSignal::on_setting_changed(const QString &key, const QVariant &value)
210 Signal::on_setting_changed(key, value);
212 if (key == GlobalSettings::Key_View_ConversionThresholdDispMode)
213 on_settingViewConversionThresholdDispMode_changed(value);
216 void AnalogSignal::paint_back(QPainter &p, ViewItemPaintParams &pp)
218 if (!base_->enabled())
222 conversion_threshold_disp_mode_ == GlobalSettings::ConvThrDispMode_Background;
224 const vector<double> thresholds = base_->get_conversion_thresholds();
226 // Only display thresholds if we have some and we show analog samples
227 if ((thresholds.size() > 0) && paint_thr_bg &&
228 ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth))) {
230 const int visual_y = get_visual_y();
231 const pair<int, int> extents = v_extents();
232 const int top = visual_y + extents.first;
233 const int btm = visual_y + extents.second;
235 // Draw high/neutral/low areas
236 if (thresholds.size() == 2) {
237 int thr_lo = visual_y - thresholds[0] * scale_;
238 int thr_hi = visual_y - thresholds[1] * scale_;
239 thr_lo = min(max(thr_lo, top), btm);
240 thr_hi = min(max(thr_hi, top), btm);
242 p.fillRect(QRectF(pp.left(), top, pp.width(), thr_hi - top),
243 QBrush(ThresholdColorHi));
244 p.fillRect(QRectF(pp.left(), thr_hi, pp.width(), thr_lo - thr_hi),
245 QBrush(ThresholdColorNe));
246 p.fillRect(QRectF(pp.left(), thr_lo, pp.width(), btm - thr_lo),
247 QBrush(ThresholdColorLo));
249 int thr = visual_y - thresholds[0] * scale_;
250 thr = min(max(thr, top), btm);
252 p.fillRect(QRectF(pp.left(), top, pp.width(), thr - top),
253 QBrush(ThresholdColorHi));
254 p.fillRect(QRectF(pp.left(), thr, pp.width(), btm - thr),
255 QBrush(ThresholdColorLo));
258 paint_axis(p, pp, get_visual_y());
260 Trace::paint_back(p, pp);
261 paint_axis(p, pp, get_visual_y());
265 void AnalogSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
267 assert(base_->analog_data());
270 const int y = get_visual_y();
272 if (!base_->enabled())
275 if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
276 paint_grid(p, y, pp.left(), pp.right());
278 shared_ptr<pv::data::AnalogSegment> segment = get_analog_segment_to_paint();
279 if (!segment || (segment->get_sample_count() == 0))
282 const double pixels_offset = pp.pixels_offset();
283 const double samplerate = max(1.0, segment->samplerate());
284 const pv::util::Timestamp& start_time = segment->start_time();
285 const int64_t last_sample = (int64_t)segment->get_sample_count() - 1;
286 const double samples_per_pixel = samplerate * pp.scale();
287 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
288 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
290 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
291 (int64_t)0), last_sample);
292 const int64_t end_sample = min(max((ceil(end) + 1).convert_to<int64_t>(),
293 (int64_t)0), last_sample);
295 if (samples_per_pixel < EnvelopeThreshold)
296 paint_trace(p, segment, y, pp.left(), start_sample, end_sample,
297 pixels_offset, samples_per_pixel);
299 paint_envelope(p, segment, y, pp.left(), start_sample, end_sample,
300 pixels_offset, samples_per_pixel);
303 if ((display_type_ == DisplayConverted) || (display_type_ == DisplayBoth))
304 paint_logic_mid(p, pp);
307 void AnalogSignal::paint_fore(QPainter &p, ViewItemPaintParams &pp)
312 if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
313 const int y = get_visual_y();
317 // Show the info section on the right side of the trace, including
318 // the value at the hover point when the hover marker is enabled
319 // and we have corresponding data available
320 if (show_hover_marker_ && !std::isnan(value_at_hover_pos_)) {
321 infotext = QString("[%1] %2 V/div")
322 .arg(format_value_si(value_at_hover_pos_, SIPrefix::unspecified, 0, "V", false))
325 infotext = QString("%1 V/div").arg(resolution_);
327 p.setPen(base_->color());
328 p.setFont(QApplication::font());
330 const QRectF bounding_rect = QRectF(pp.left(),
331 y + v_extents().first,
332 pp.width() - InfoTextMarginRight,
333 v_extents().second - v_extents().first - InfoTextMarginBottom);
335 p.drawText(bounding_rect, Qt::AlignRight | Qt::AlignBottom, infotext);
338 if (show_hover_marker_)
339 paint_hover_marker(p);
342 void AnalogSignal::paint_grid(QPainter &p, int y, int left, int right)
344 p.setRenderHint(QPainter::Antialiasing, false);
346 GlobalSettings settings;
347 const bool show_analog_minor_grid =
348 settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool();
350 if (pos_vdivs_ > 0) {
351 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
352 for (int i = 1; i <= pos_vdivs_; i++) {
353 const float dy = i * div_height_;
354 p.drawLine(QLineF(left, y - dy, right, y - dy));
358 if ((pos_vdivs_ > 0) && show_analog_minor_grid) {
359 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
360 for (int i = 0; i < pos_vdivs_; i++) {
361 const float dy = i * div_height_;
362 const float dy25 = dy + (0.25 * div_height_);
363 const float dy50 = dy + (0.50 * div_height_);
364 const float dy75 = dy + (0.75 * div_height_);
365 p.drawLine(QLineF(left, y - dy25, right, y - dy25));
366 p.drawLine(QLineF(left, y - dy50, right, y - dy50));
367 p.drawLine(QLineF(left, y - dy75, right, y - dy75));
371 if (neg_vdivs_ > 0) {
372 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
373 for (int i = 1; i <= neg_vdivs_; i++) {
374 const float dy = i * div_height_;
375 p.drawLine(QLineF(left, y + dy, right, y + dy));
379 if ((pos_vdivs_ > 0) && show_analog_minor_grid) {
380 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
381 for (int i = 0; i < neg_vdivs_; i++) {
382 const float dy = i * div_height_;
383 const float dy25 = dy + (0.25 * div_height_);
384 const float dy50 = dy + (0.50 * div_height_);
385 const float dy75 = dy + (0.75 * div_height_);
386 p.drawLine(QLineF(left, y + dy25, right, y + dy25));
387 p.drawLine(QLineF(left, y + dy50, right, y + dy50));
388 p.drawLine(QLineF(left, y + dy75, right, y + dy75));
392 p.setRenderHint(QPainter::Antialiasing, true);
395 void AnalogSignal::paint_trace(QPainter &p,
396 const shared_ptr<pv::data::AnalogSegment> &segment,
397 int y, int left, const int64_t start, const int64_t end,
398 const double pixels_offset, const double samples_per_pixel)
403 bool paint_thr_dots =
404 (base_->get_conversion_type() != data::SignalBase::NoConversion) &&
405 (conversion_threshold_disp_mode_ == GlobalSettings::ConvThrDispMode_Dots);
407 vector<double> thresholds;
409 thresholds = base_->get_conversion_thresholds();
411 // Calculate and paint the sampling points if enabled and useful
412 GlobalSettings settings;
413 const bool show_sampling_points =
414 (settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() ||
415 paint_thr_dots) && (samples_per_pixel < 0.25);
417 p.setPen(base_->color());
419 const int64_t points_count = end - start + 1;
421 QPointF *points = new QPointF[points_count];
422 QPointF *point = points;
424 vector<QRectF> sampling_points[3];
426 int64_t sample_count = min(points_count, TracePaintBlockSize);
427 int64_t block_sample = 0;
428 float *sample_block = new float[TracePaintBlockSize];
429 segment->get_samples(start, start + sample_count, sample_block);
431 if (show_hover_marker_)
432 reset_pixel_values();
435 for (int64_t sample = start; sample <= end; sample++, block_sample++) {
437 // Fetch next block of samples if we finished the current one
438 if (block_sample == TracePaintBlockSize) {
440 sample_count = min(points_count - sample, TracePaintBlockSize);
441 segment->get_samples(sample, sample + sample_count, sample_block);
444 const float abs_x = sample / samples_per_pixel - pixels_offset;
445 const float x = left + abs_x;
447 *point++ = QPointF(x, y - sample_block[block_sample] * scale_);
449 // Generate the pixel<->value lookup table for the mouse hover
450 if (show_hover_marker_)
451 process_next_sample_value(abs_x, sample_block[block_sample]);
453 // Create the sampling points if needed
454 if (show_sampling_points) {
455 int idx = 0; // Neutral
457 if (paint_thr_dots) {
458 if (thresholds.size() == 1)
459 idx = (sample_block[block_sample] >= thresholds[0]) ? 2 : 1;
460 else if (thresholds.size() == 2) {
461 if (sample_block[block_sample] > thresholds[1])
463 else if (sample_block[block_sample] < thresholds[0])
468 sampling_points[idx].emplace_back(x - (w / 2), y - sample_block[block_sample] * scale_ - (w / 2), w, w);
471 delete[] sample_block;
473 p.drawPolyline(points, points_count);
475 if (show_sampling_points) {
476 if (paint_thr_dots) {
477 p.setPen(SamplingPointColorNe);
478 p.drawRects(sampling_points[0].data(), sampling_points[0].size());
479 p.setPen(SamplingPointColorLo);
480 p.drawRects(sampling_points[1].data(), sampling_points[1].size());
481 p.setPen(SamplingPointColorHi);
482 p.drawRects(sampling_points[2].data(), sampling_points[2].size());
484 p.setPen(SamplingPointColor);
485 p.drawRects(sampling_points[0].data(), sampling_points[0].size());
492 void AnalogSignal::paint_envelope(QPainter &p,
493 const shared_ptr<pv::data::AnalogSegment> &segment,
494 int y, int left, const int64_t start, const int64_t end,
495 const double pixels_offset, const double samples_per_pixel)
497 using pv::data::AnalogSegment;
499 // Note: Envelope painting currently doesn't generate a pixel<->value lookup table
500 if (show_hover_marker_)
501 reset_pixel_values();
503 AnalogSegment::EnvelopeSection e;
504 segment->get_envelope_section(e, start, end, samples_per_pixel);
509 p.setPen(QPen(Qt::NoPen));
510 p.setBrush(base_->color());
512 QRectF *const rects = new QRectF[e.length];
513 QRectF *rect = rects;
515 for (uint64_t sample = 0; sample < e.length - 1; sample++) {
516 const float x = ((e.scale * sample + e.start) /
517 samples_per_pixel - pixels_offset) + left;
519 const AnalogSegment::EnvelopeSample *const s = e.samples + sample;
521 // We overlap this sample with the next so that vertical
522 // gaps do not appear during steep rising or falling edges
523 const float b = y - max(s->max, (s + 1)->min) * scale_;
524 const float t = y - min(s->min, (s + 1)->max) * scale_;
527 if (h >= 0.0f && h <= 1.0f)
529 if (h <= 0.0f && h >= -1.0f)
532 *rect++ = QRectF(x, t, 1.0f, h);
535 p.drawRects(rects, e.length);
541 void AnalogSignal::paint_logic_mid(QPainter &p, ViewItemPaintParams &pp)
545 vector< pair<int64_t, bool> > edges;
549 const int y = get_visual_y();
551 if (!base_->enabled() || !base_->logic_data())
554 const int signal_margin =
555 QFontMetrics(QApplication::font()).height() / 2;
557 const int ph = min(pos_vdivs_, 1) * div_height_;
558 const int nh = min(neg_vdivs_, 1) * div_height_;
559 const float high_offset = y - ph + signal_margin + 0.5f;
560 const float low_offset = y + nh - signal_margin - 0.5f;
562 shared_ptr<pv::data::LogicSegment> segment = get_logic_segment_to_paint();
563 if (!segment || (segment->get_sample_count() == 0))
566 double samplerate = segment->samplerate();
568 // Show sample rate as 1Hz when it is unknown
569 if (samplerate == 0.0)
572 const double pixels_offset = pp.pixels_offset();
573 const pv::util::Timestamp& start_time = segment->start_time();
574 const int64_t last_sample = (int64_t)segment->get_sample_count() - 1;
575 const double samples_per_pixel = samplerate * pp.scale();
576 const double pixels_per_sample = 1 / samples_per_pixel;
577 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
578 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
580 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
581 (int64_t)0), last_sample);
582 const uint64_t end_sample = min(max(ceil(end).convert_to<int64_t>(),
583 (int64_t)0), last_sample);
585 segment->get_subsampled_edges(edges, start_sample, end_sample,
586 samples_per_pixel / LogicSignal::Oversampling, 0);
587 assert(edges.size() >= 2);
589 // Check whether we need to paint the sampling points
590 GlobalSettings settings;
591 const bool show_sampling_points =
592 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() &&
593 (samples_per_pixel < 0.25);
595 vector<QRectF> sampling_points;
596 float sampling_point_x = 0.0f;
597 int64_t sampling_point_sample = start_sample;
600 if (show_sampling_points) {
601 sampling_points.reserve(end_sample - start_sample + 1);
602 sampling_point_x = (edges.cbegin()->first / samples_per_pixel - pixels_offset) + pp.left();
606 const unsigned int edge_count = edges.size() - 2;
607 QLineF *const edge_lines = new QLineF[edge_count];
610 for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
611 const float x = ((*i).first / samples_per_pixel -
612 pixels_offset) + pp.left();
613 *line++ = QLineF(x, high_offset, x, low_offset);
615 if (show_sampling_points)
616 while (sampling_point_sample < (*i).first) {
617 const float y = (*i).second ? low_offset : high_offset;
618 sampling_points.emplace_back(
619 QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
620 sampling_point_sample++;
621 sampling_point_x += pixels_per_sample;
625 // Calculate the sample points from the last edge to the end of the trace
626 if (show_sampling_points)
627 while ((uint64_t)sampling_point_sample <= end_sample) {
628 // Signal changed after the last edge, so the level is inverted
629 const float y = (edges.cend() - 1)->second ? high_offset : low_offset;
630 sampling_points.emplace_back(
631 QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
632 sampling_point_sample++;
633 sampling_point_x += pixels_per_sample;
636 p.setPen(LogicSignal::EdgeColor);
637 p.drawLines(edge_lines, edge_count);
641 const unsigned int max_cap_line_count = edges.size();
642 QLineF *const cap_lines = new QLineF[max_cap_line_count];
644 p.setPen(LogicSignal::HighColor);
645 paint_logic_caps(p, cap_lines, edges, true, samples_per_pixel,
646 pixels_offset, pp.left(), high_offset);
647 p.setPen(LogicSignal::LowColor);
648 paint_logic_caps(p, cap_lines, edges, false, samples_per_pixel,
649 pixels_offset, pp.left(), low_offset);
653 // Paint the sampling points
654 if (show_sampling_points) {
655 p.setPen(SamplingPointColor);
656 p.drawRects(sampling_points.data(), sampling_points.size());
660 void AnalogSignal::paint_logic_caps(QPainter &p, QLineF *const lines,
661 vector< pair<int64_t, bool> > &edges, bool level,
662 double samples_per_pixel, double pixels_offset, float x_offset,
665 QLineF *line = lines;
667 for (auto i = edges.begin(); i != (edges.end() - 1); i++)
668 if ((*i).second == level) {
670 ((*i).first / samples_per_pixel -
671 pixels_offset) + x_offset, y_offset,
672 ((*(i+1)).first / samples_per_pixel -
673 pixels_offset) + x_offset, y_offset);
676 p.drawLines(lines, line - lines);
679 shared_ptr<pv::data::AnalogSegment> AnalogSignal::get_analog_segment_to_paint() const
681 shared_ptr<pv::data::AnalogSegment> segment;
683 const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
684 base_->analog_data()->analog_segments();
686 if (!segments.empty()) {
687 if (segment_display_mode_ == ShowLastSegmentOnly)
688 segment = segments.back();
690 if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
691 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
693 segment = segments.at(current_segment_);
694 } catch (out_of_range&) {
695 qDebug() << "Current analog segment out of range for signal" << base_->name() << ":" << current_segment_;
703 shared_ptr<pv::data::LogicSegment> AnalogSignal::get_logic_segment_to_paint() const
705 shared_ptr<pv::data::LogicSegment> segment;
707 const deque< shared_ptr<pv::data::LogicSegment> > &segments =
708 base_->logic_data()->logic_segments();
710 if (!segments.empty()) {
711 if (segment_display_mode_ == ShowLastSegmentOnly)
712 segment = segments.back();
714 if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
715 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
717 segment = segments.at(current_segment_);
718 } catch (out_of_range&) {
719 qDebug() << "Current logic segment out of range for signal" << base_->name() << ":" << current_segment_;
727 float AnalogSignal::get_resolution(int scale_index)
729 const float seq[] = {1.0f, 2.0f, 5.0f};
731 const int offset = numeric_limits<int>::max() / (2 * countof(seq));
732 const div_t d = div((int)(scale_index + countof(seq) * offset),
735 return powf(10.0f, d.quot - offset) * seq[d.rem];
738 void AnalogSignal::update_scale()
740 resolution_ = get_resolution(scale_index_);
741 scale_ = div_height_ / resolution_;
744 void AnalogSignal::update_conversion_widgets()
746 SignalBase::ConversionType conv_type = base_->get_conversion_type();
748 // Enable or disable widgets depending on conversion state
749 conv_threshold_cb_->setEnabled(conv_type != SignalBase::NoConversion);
750 display_type_cb_->setEnabled(conv_type != SignalBase::NoConversion);
752 conv_threshold_cb_->clear();
754 vector < pair<QString, int> > presets = base_->get_conversion_presets();
756 // Prevent the combo box from firing the "edit text changed" signal
757 // as that would involuntarily select the first entry
758 conv_threshold_cb_->blockSignals(true);
760 // Set available options depending on chosen conversion
761 for (pair<QString, int> preset : presets)
762 conv_threshold_cb_->addItem(preset.first, preset.second);
764 map < QString, QVariant > options = base_->get_conversion_options();
766 if (conv_type == SignalBase::A2LConversionByThreshold) {
767 const vector<double> thresholds = base_->get_conversion_thresholds(
768 SignalBase::A2LConversionByThreshold, true);
769 conv_threshold_cb_->addItem(
770 QString("%1V").arg(QString::number(thresholds[0], 'f', 1)), -1);
773 if (conv_type == SignalBase::A2LConversionBySchmittTrigger) {
774 const vector<double> thresholds = base_->get_conversion_thresholds(
775 SignalBase::A2LConversionBySchmittTrigger, true);
776 conv_threshold_cb_->addItem(QString("%1V/%2V").arg(
777 QString::number(thresholds[0], 'f', 1),
778 QString::number(thresholds[1], 'f', 1)), -1);
781 int preset_id = base_->get_current_conversion_preset();
782 conv_threshold_cb_->setCurrentIndex(
783 conv_threshold_cb_->findData(preset_id));
785 conv_threshold_cb_->blockSignals(false);
788 void AnalogSignal::perform_autoranging(bool keep_divs, bool force_update)
790 const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
791 base_->analog_data()->analog_segments();
793 if (segments.empty())
796 static double prev_min = 0, prev_max = 0;
797 double min = 0, max = 0;
799 for (shared_ptr<pv::data::AnalogSegment> segment : segments) {
800 pair<double, double> mm = segment->get_min_max();
801 min = std::min(min, mm.first);
802 max = std::max(max, mm.second);
805 if ((min == prev_min) && (max == prev_max) && !force_update)
811 // If we're allowed to alter the div assignment...
813 // Use all divs for the positive range if there are no negative values
814 if ((min == 0) && (neg_vdivs_ > 0)) {
815 pos_vdivs_ += neg_vdivs_;
819 // Split up the divs if there are negative values but no negative divs
820 if ((min < 0) && (neg_vdivs_ == 0)) {
821 neg_vdivs_ = pos_vdivs_ / 2;
822 pos_vdivs_ -= neg_vdivs_;
826 // If there is still no positive div when we need it, add one
827 // (this can happen when pos_vdivs==neg_vdivs==0)
828 if ((max > 0) && (pos_vdivs_ == 0)) {
830 owner_->extents_changed(false, true);
833 // If there is still no negative div when we need it, add one
834 // (this can happen when pos_vdivs was 0 or 1 when trying to split)
835 if ((min < 0) && (neg_vdivs_ == 0)) {
837 owner_->extents_changed(false, true);
840 double min_value_per_div;
841 if ((pos_vdivs_ > 0) && (neg_vdivs_ > 0))
842 min_value_per_div = std::max(max / pos_vdivs_, -min / neg_vdivs_);
843 else if (pos_vdivs_ > 0)
844 min_value_per_div = max / pos_vdivs_;
846 min_value_per_div = -min / neg_vdivs_;
848 // Find first scale value that is bigger than the value we need
849 for (int i = MinScaleIndex; i < MaxScaleIndex; i++)
850 if (get_resolution(i) > min_value_per_div) {
858 void AnalogSignal::reset_pixel_values()
860 value_at_pixel_pos_.clear();
861 current_pixel_pos_ = -1;
862 prev_value_at_pixel_ = std::numeric_limits<float>::quiet_NaN();
865 void AnalogSignal::process_next_sample_value(float x, float value)
867 // Note: NAN is used to indicate the non-existance of a value at this pixel
869 if (std::isnan(prev_value_at_pixel_)) {
871 min_value_at_pixel_ = value;
872 max_value_at_pixel_ = value;
873 prev_value_at_pixel_ = value;
874 current_pixel_pos_ = x;
876 prev_value_at_pixel_ = std::numeric_limits<float>::quiet_NaN();
879 const int pixel_pos = (int)(x + 0.5);
881 if (pixel_pos > current_pixel_pos_) {
882 if (pixel_pos - current_pixel_pos_ == 1) {
883 if (std::isnan(prev_value_at_pixel_)) {
884 value_at_pixel_pos_.push_back(prev_value_at_pixel_);
886 // Average the min/max range to create one value for the previous pixel
887 const float avg = (min_value_at_pixel_ + max_value_at_pixel_) / 2;
888 value_at_pixel_pos_.push_back(avg);
891 // Interpolate values to create values for the intermediate pixels
892 const float start_value = prev_value_at_pixel_;
893 const float end_value = value;
894 const int steps = fabs(pixel_pos - current_pixel_pos_);
895 const double gradient = (end_value - start_value) / steps;
896 for (int i = 0; i < steps; i++) {
897 if (current_pixel_pos_ + i < 0)
899 value_at_pixel_pos_.push_back(start_value + i * gradient);
903 min_value_at_pixel_ = value;
904 max_value_at_pixel_ = value;
905 prev_value_at_pixel_ = value;
906 current_pixel_pos_ = pixel_pos;
908 // Another sample for the same pixel
909 if (value < min_value_at_pixel_)
910 min_value_at_pixel_ = value;
911 if (value > max_value_at_pixel_)
912 max_value_at_pixel_ = value;
916 void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
918 // Add the standard options
919 Signal::populate_popup_form(parent, form);
921 QFormLayout *const layout = new QFormLayout;
923 // Add div-related settings
924 pvdiv_sb_ = new QSpinBox(parent);
925 pvdiv_sb_->setRange(0, MaximumVDivs);
926 pvdiv_sb_->setValue(pos_vdivs_);
927 connect(pvdiv_sb_, SIGNAL(valueChanged(int)),
928 this, SLOT(on_pos_vdivs_changed(int)));
929 layout->addRow(tr("Number of pos vertical divs"), pvdiv_sb_);
931 nvdiv_sb_ = new QSpinBox(parent);
932 nvdiv_sb_->setRange(0, MaximumVDivs);
933 nvdiv_sb_->setValue(neg_vdivs_);
934 connect(nvdiv_sb_, SIGNAL(valueChanged(int)),
935 this, SLOT(on_neg_vdivs_changed(int)));
936 layout->addRow(tr("Number of neg vertical divs"), nvdiv_sb_);
938 div_height_sb_ = new QSpinBox(parent);
939 div_height_sb_->setRange(20, 1000);
940 div_height_sb_->setSingleStep(5);
941 div_height_sb_->setSuffix(tr(" pixels"));
942 div_height_sb_->setValue(div_height_);
943 connect(div_height_sb_, SIGNAL(valueChanged(int)),
944 this, SLOT(on_div_height_changed(int)));
945 layout->addRow(tr("Div height"), div_height_sb_);
947 // Add the vertical resolution
948 resolution_cb_ = new QComboBox(parent);
950 for (int i = MinScaleIndex; i < MaxScaleIndex; i++) {
951 const QString label = QString("%1").arg(get_resolution(i));
952 resolution_cb_->insertItem(0, label, QVariant(i));
955 int cur_idx = resolution_cb_->findData(QVariant(scale_index_));
956 resolution_cb_->setCurrentIndex(cur_idx);
958 connect(resolution_cb_, SIGNAL(currentIndexChanged(int)),
959 this, SLOT(on_resolution_changed(int)));
961 QGridLayout *const vdiv_layout = new QGridLayout;
962 QLabel *const vdiv_unit = new QLabel(tr("V/div"));
963 vdiv_layout->addWidget(resolution_cb_, 0, 0);
964 vdiv_layout->addWidget(vdiv_unit, 0, 1);
966 layout->addRow(tr("Vertical resolution"), vdiv_layout);
968 // Add the autoranging checkbox
969 QCheckBox* autoranging_cb = new QCheckBox();
970 autoranging_cb->setCheckState(autoranging_ ? Qt::Checked : Qt::Unchecked);
972 connect(autoranging_cb, SIGNAL(stateChanged(int)),
973 this, SLOT(on_autoranging_changed(int)));
975 layout->addRow(tr("Autoranging"), autoranging_cb);
977 // Add the conversion type dropdown
978 conversion_cb_ = new QComboBox();
980 conversion_cb_->addItem(tr("none"),
981 SignalBase::NoConversion);
982 conversion_cb_->addItem(tr("to logic via threshold"),
983 SignalBase::A2LConversionByThreshold);
984 conversion_cb_->addItem(tr("to logic via schmitt-trigger"),
985 SignalBase::A2LConversionBySchmittTrigger);
987 cur_idx = conversion_cb_->findData(QVariant(base_->get_conversion_type()));
988 conversion_cb_->setCurrentIndex(cur_idx);
990 layout->addRow(tr("Conversion"), conversion_cb_);
992 connect(conversion_cb_, SIGNAL(currentIndexChanged(int)),
993 this, SLOT(on_conversion_changed(int)));
995 // Add the conversion threshold settings
996 conv_threshold_cb_ = new QComboBox();
997 conv_threshold_cb_->setEditable(true);
999 layout->addRow(tr("Conversion threshold(s)"), conv_threshold_cb_);
1001 connect(conv_threshold_cb_, SIGNAL(currentIndexChanged(int)),
1002 this, SLOT(on_conv_threshold_changed(int)));
1003 connect(conv_threshold_cb_, SIGNAL(editTextChanged(const QString&)),
1004 this, SLOT(on_conv_threshold_changed())); // index will be -1
1006 // Add the display type dropdown
1007 display_type_cb_ = new QComboBox();
1009 display_type_cb_->addItem(tr("analog"), DisplayAnalog);
1010 display_type_cb_->addItem(tr("converted"), DisplayConverted);
1011 display_type_cb_->addItem(tr("analog+converted"), DisplayBoth);
1013 cur_idx = display_type_cb_->findData(QVariant(display_type_));
1014 display_type_cb_->setCurrentIndex(cur_idx);
1016 layout->addRow(tr("Show traces for"), display_type_cb_);
1018 connect(display_type_cb_, SIGNAL(currentIndexChanged(int)),
1019 this, SLOT(on_display_type_changed(int)));
1021 // Update the conversion widget contents and states
1022 update_conversion_widgets();
1024 form->addRow(layout);
1027 void AnalogSignal::hover_point_changed(const QPoint &hp)
1029 Signal::hover_point_changed(hp);
1031 // Note: Even though the view area begins at 0, we exclude 0 because
1032 // that's also the value given when the cursor is over the header to the
1033 // left of the trace paint area
1035 value_at_hover_pos_ = std::numeric_limits<float>::quiet_NaN();
1038 value_at_hover_pos_ = value_at_pixel_pos_.at(hp.x());
1039 } catch (out_of_range) {
1040 value_at_hover_pos_ = std::numeric_limits<float>::quiet_NaN();
1045 void AnalogSignal::on_min_max_changed(float min, float max)
1051 perform_autoranging(false, false);
1054 void AnalogSignal::on_pos_vdivs_changed(int vdivs)
1056 if (vdivs == pos_vdivs_)
1061 // There has to be at least one div, positive or negative
1062 if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
1065 pvdiv_sb_->setValue(pos_vdivs_);
1069 perform_autoranging(true, true);
1071 // It could be that a positive or negative div was added, so update
1073 pvdiv_sb_->setValue(pos_vdivs_);
1074 nvdiv_sb_->setValue(neg_vdivs_);
1079 // Call order is important, otherwise the lazy event handler won't work
1080 owner_->extents_changed(false, true);
1081 owner_->row_item_appearance_changed(false, true);
1085 void AnalogSignal::on_neg_vdivs_changed(int vdivs)
1087 if (vdivs == neg_vdivs_)
1092 // There has to be at least one div, positive or negative
1093 if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
1096 pvdiv_sb_->setValue(pos_vdivs_);
1100 perform_autoranging(true, true);
1102 // It could be that a positive or negative div was added, so update
1104 pvdiv_sb_->setValue(pos_vdivs_);
1105 nvdiv_sb_->setValue(neg_vdivs_);
1110 // Call order is important, otherwise the lazy event handler won't work
1111 owner_->extents_changed(false, true);
1112 owner_->row_item_appearance_changed(false, true);
1116 void AnalogSignal::on_div_height_changed(int height)
1118 div_height_ = height;
1122 // Call order is important, otherwise the lazy event handler won't work
1123 owner_->extents_changed(false, true);
1124 owner_->row_item_appearance_changed(false, true);
1128 void AnalogSignal::on_resolution_changed(int index)
1130 scale_index_ = resolution_cb_->itemData(index).toInt();
1134 owner_->row_item_appearance_changed(false, true);
1137 void AnalogSignal::on_autoranging_changed(int state)
1139 autoranging_ = (state == Qt::Checked);
1142 perform_autoranging(false, true);
1145 // Call order is important, otherwise the lazy event handler won't work
1146 owner_->extents_changed(false, true);
1147 owner_->row_item_appearance_changed(false, true);
1151 void AnalogSignal::on_conversion_changed(int index)
1153 SignalBase::ConversionType old_conv_type = base_->get_conversion_type();
1155 SignalBase::ConversionType conv_type =
1156 (SignalBase::ConversionType)(conversion_cb_->itemData(index).toInt());
1158 if (conv_type != old_conv_type) {
1159 base_->set_conversion_type(conv_type);
1160 update_conversion_widgets();
1163 owner_->row_item_appearance_changed(false, true);
1167 void AnalogSignal::on_conv_threshold_changed(int index)
1169 SignalBase::ConversionType conv_type = base_->get_conversion_type();
1171 // Note: index is set to -1 if the text in the combo box matches none of
1172 // the entries in the combo box
1174 if ((index == -1) && (conv_threshold_cb_->currentText().length() == 0))
1177 // The combo box entry with the custom value has user_data set to -1
1178 const int user_data = conv_threshold_cb_->findText(
1179 conv_threshold_cb_->currentText());
1181 const bool use_custom_thr = (index == -1) || (user_data == -1);
1183 if (conv_type == SignalBase::A2LConversionByThreshold && use_custom_thr) {
1184 // Not one of the preset values, try to parse the combo box text
1185 // Note: Regex loosely based on
1186 // https://txt2re.com/index-c++.php3?s=0.1V&1&-13
1187 QString re1 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1188 QString re2 = "([a-zA-Z]*)"; // SI unit
1189 QRegExp regex(re1 + re2);
1191 const QString text = conv_threshold_cb_->currentText();
1192 if (!regex.exactMatch(text))
1193 return; // String doesn't match the regex
1195 QStringList tokens = regex.capturedTexts();
1197 // For now, we simply assume that the unit is volt without modifiers
1198 const double thr = tokens.at(1).toDouble();
1200 // Only restart the conversion if the threshold was updated.
1201 // We're starting a delayed conversion because the user may still be
1202 // typing and the UI would lag if we kept on restarting it immediately
1203 if (base_->set_conversion_option("threshold_value", thr))
1204 base_->start_conversion(true);
1207 if (conv_type == SignalBase::A2LConversionBySchmittTrigger && use_custom_thr) {
1208 // Not one of the preset values, try to parse the combo box text
1209 // Note: Regex loosely based on
1210 // https://txt2re.com/index-c++.php3?s=0.1V/0.2V&2&14&-22&3&15
1211 QString re1 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1212 QString re2 = "([a-zA-Z]*)"; // SI unit
1213 QString re3 = "\\/"; // Forward slash, not captured
1214 QString re4 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1215 QString re5 = "([a-zA-Z]*)"; // SI unit
1216 QRegExp regex(re1 + re2 + re3 + re4 + re5);
1218 const QString text = conv_threshold_cb_->currentText();
1219 if (!regex.exactMatch(text))
1220 return; // String doesn't match the regex
1222 QStringList tokens = regex.capturedTexts();
1224 // For now, we simply assume that the unit is volt without modifiers
1225 const double low_thr = tokens.at(1).toDouble();
1226 const double high_thr = tokens.at(3).toDouble();
1228 // Only restart the conversion if one of the options was updated.
1229 // We're starting a delayed conversion because the user may still be
1230 // typing and the UI would lag if we kept on restarting it immediately
1231 bool o1 = base_->set_conversion_option("threshold_value_low", low_thr);
1232 bool o2 = base_->set_conversion_option("threshold_value_high", high_thr);
1234 base_->start_conversion(true); // Start delayed conversion
1237 base_->set_conversion_preset((SignalBase::ConversionPreset)index);
1239 // Immediately start the conversion if we're not using custom values
1240 // (i.e. we're using one of the presets)
1241 if (!use_custom_thr)
1242 base_->start_conversion();
1245 void AnalogSignal::on_delayed_conversion_starter()
1247 base_->start_conversion();
1250 void AnalogSignal::on_display_type_changed(int index)
1252 display_type_ = (DisplayType)(display_type_cb_->itemData(index).toInt());
1255 owner_->row_item_appearance_changed(false, true);
1258 void AnalogSignal::on_settingViewConversionThresholdDispMode_changed(const QVariant new_value)
1260 conversion_threshold_disp_mode_ = new_value.toInt();
1263 owner_->row_item_appearance_changed(false, true);
1266 } // namespace trace
1267 } // namespace views