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
111 display_type_(DisplayBoth),
116 pv::data::Analog* analog_data =
117 dynamic_cast<pv::data::Analog*>(data().get());
119 connect(analog_data, SIGNAL(min_max_changed(float, float)),
120 this, SLOT(on_min_max_changed(float, float)));
123 conversion_threshold_disp_mode_ =
124 gs.value(GlobalSettings::Key_View_ConversionThresholdDispMode).toInt();
126 div_height_ = gs.value(GlobalSettings::Key_View_DefaultDivHeight).toInt();
128 base_->set_color(SignalColors[base_->index() % countof(SignalColors)]);
132 shared_ptr<pv::data::SignalData> AnalogSignal::data() const
134 return base_->analog_data();
137 void AnalogSignal::save_settings(QSettings &settings) const
139 settings.setValue("pos_vdivs", pos_vdivs_);
140 settings.setValue("neg_vdivs", neg_vdivs_);
141 settings.setValue("scale_index", scale_index_);
142 settings.setValue("display_type", display_type_);
143 settings.setValue("autoranging", autoranging_);
144 settings.setValue("div_height", div_height_);
147 void AnalogSignal::restore_settings(QSettings &settings)
149 if (settings.contains("pos_vdivs"))
150 pos_vdivs_ = settings.value("pos_vdivs").toInt();
152 if (settings.contains("neg_vdivs"))
153 neg_vdivs_ = settings.value("neg_vdivs").toInt();
155 if (settings.contains("scale_index")) {
156 scale_index_ = settings.value("scale_index").toInt();
160 if (settings.contains("display_type"))
161 display_type_ = (DisplayType)(settings.value("display_type").toInt());
163 if (settings.contains("autoranging"))
164 autoranging_ = settings.value("autoranging").toBool();
166 if (settings.contains("div_height")) {
167 const int old_height = div_height_;
168 div_height_ = settings.value("div_height").toInt();
170 if ((div_height_ != old_height) && owner_) {
171 // Call order is important, otherwise the lazy event handler won't work
172 owner_->extents_changed(false, true);
173 owner_->row_item_appearance_changed(false, true);
178 pair<int, int> AnalogSignal::v_extents() const
180 const int ph = pos_vdivs_ * div_height_;
181 const int nh = neg_vdivs_ * div_height_;
182 return make_pair(-ph, nh);
185 void AnalogSignal::on_setting_changed(const QString &key, const QVariant &value)
187 Signal::on_setting_changed(key, value);
189 if (key == GlobalSettings::Key_View_ConversionThresholdDispMode)
190 on_settingViewConversionThresholdDispMode_changed(value);
193 void AnalogSignal::paint_back(QPainter &p, ViewItemPaintParams &pp)
195 if (!base_->enabled())
199 conversion_threshold_disp_mode_ == GlobalSettings::ConvThrDispMode_Background;
201 const vector<double> thresholds = base_->get_conversion_thresholds();
203 // Only display thresholds if we have some and we show analog samples
204 if ((thresholds.size() > 0) && paint_thr_bg &&
205 ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth))) {
207 const int visual_y = get_visual_y();
208 const pair<int, int> extents = v_extents();
209 const int top = visual_y + extents.first;
210 const int btm = visual_y + extents.second;
212 // Draw high/neutral/low areas
213 if (thresholds.size() == 2) {
214 int thr_lo = visual_y - thresholds[0] * scale_;
215 int thr_hi = visual_y - thresholds[1] * scale_;
216 thr_lo = min(max(thr_lo, top), btm);
217 thr_hi = min(max(thr_hi, top), btm);
219 p.fillRect(QRectF(pp.left(), top, pp.width(), thr_hi - top),
220 QBrush(ThresholdColorHi));
221 p.fillRect(QRectF(pp.left(), thr_hi, pp.width(), thr_lo - thr_hi),
222 QBrush(ThresholdColorNe));
223 p.fillRect(QRectF(pp.left(), thr_lo, pp.width(), btm - thr_lo),
224 QBrush(ThresholdColorLo));
226 int thr = visual_y - thresholds[0] * scale_;
227 thr = min(max(thr, top), btm);
229 p.fillRect(QRectF(pp.left(), top, pp.width(), thr - top),
230 QBrush(ThresholdColorHi));
231 p.fillRect(QRectF(pp.left(), thr, pp.width(), btm - thr),
232 QBrush(ThresholdColorLo));
235 paint_axis(p, pp, get_visual_y());
237 Trace::paint_back(p, pp);
238 paint_axis(p, pp, get_visual_y());
242 void AnalogSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
244 assert(base_->analog_data());
247 const int y = get_visual_y();
249 if (!base_->enabled())
252 if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
253 paint_grid(p, y, pp.left(), pp.right());
255 shared_ptr<pv::data::AnalogSegment> segment = get_analog_segment_to_paint();
256 if (!segment || (segment->get_sample_count() == 0))
259 const double pixels_offset = pp.pixels_offset();
260 const double samplerate = max(1.0, segment->samplerate());
261 const pv::util::Timestamp& start_time = segment->start_time();
262 const int64_t last_sample = (int64_t)segment->get_sample_count() - 1;
263 const double samples_per_pixel = samplerate * pp.scale();
264 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
265 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
267 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
268 (int64_t)0), last_sample);
269 const int64_t end_sample = min(max((ceil(end) + 1).convert_to<int64_t>(),
270 (int64_t)0), last_sample);
272 if (samples_per_pixel < EnvelopeThreshold)
273 paint_trace(p, segment, y, pp.left(), start_sample, end_sample,
274 pixels_offset, samples_per_pixel);
276 paint_envelope(p, segment, y, pp.left(), start_sample, end_sample,
277 pixels_offset, samples_per_pixel);
280 if ((display_type_ == DisplayConverted) || (display_type_ == DisplayBoth))
281 paint_logic_mid(p, pp);
284 void AnalogSignal::paint_fore(QPainter &p, ViewItemPaintParams &pp)
289 if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
290 const int y = get_visual_y();
294 // Show the info section on the right side of the trace, including
295 // the value at the hover point when the hover marker is enabled
296 // and we have corresponding data available
297 if (show_hover_marker_ && !std::isnan(value_at_hover_pos_)) {
298 infotext = QString("[%1] %2 V/div")
299 .arg(format_value_si(value_at_hover_pos_, SIPrefix::unspecified, 0, "V", false))
302 infotext = QString("%1 V/div").arg(resolution_);
304 p.setPen(base_->color());
305 p.setFont(QApplication::font());
307 const QRectF bounding_rect = QRectF(pp.left(),
308 y + v_extents().first,
309 pp.width() - InfoTextMarginRight,
310 v_extents().second - v_extents().first - InfoTextMarginBottom);
312 p.drawText(bounding_rect, Qt::AlignRight | Qt::AlignBottom, infotext);
315 if (show_hover_marker_)
316 paint_hover_marker(p);
319 void AnalogSignal::paint_grid(QPainter &p, int y, int left, int right)
321 p.setRenderHint(QPainter::Antialiasing, false);
323 GlobalSettings settings;
324 const bool show_analog_minor_grid =
325 settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool();
327 if (pos_vdivs_ > 0) {
328 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
329 for (int i = 1; i <= pos_vdivs_; i++) {
330 const float dy = i * div_height_;
331 p.drawLine(QLineF(left, y - dy, right, y - dy));
335 if ((pos_vdivs_ > 0) && show_analog_minor_grid) {
336 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
337 for (int i = 0; i < pos_vdivs_; i++) {
338 const float dy = i * div_height_;
339 const float dy25 = dy + (0.25 * div_height_);
340 const float dy50 = dy + (0.50 * div_height_);
341 const float dy75 = dy + (0.75 * div_height_);
342 p.drawLine(QLineF(left, y - dy25, right, y - dy25));
343 p.drawLine(QLineF(left, y - dy50, right, y - dy50));
344 p.drawLine(QLineF(left, y - dy75, right, y - dy75));
348 if (neg_vdivs_ > 0) {
349 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
350 for (int i = 1; i <= neg_vdivs_; i++) {
351 const float dy = i * div_height_;
352 p.drawLine(QLineF(left, y + dy, right, y + dy));
356 if ((pos_vdivs_ > 0) && show_analog_minor_grid) {
357 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
358 for (int i = 0; i < neg_vdivs_; i++) {
359 const float dy = i * div_height_;
360 const float dy25 = dy + (0.25 * div_height_);
361 const float dy50 = dy + (0.50 * div_height_);
362 const float dy75 = dy + (0.75 * div_height_);
363 p.drawLine(QLineF(left, y + dy25, right, y + dy25));
364 p.drawLine(QLineF(left, y + dy50, right, y + dy50));
365 p.drawLine(QLineF(left, y + dy75, right, y + dy75));
369 p.setRenderHint(QPainter::Antialiasing, true);
372 void AnalogSignal::paint_trace(QPainter &p,
373 const shared_ptr<pv::data::AnalogSegment> &segment,
374 int y, int left, const int64_t start, const int64_t end,
375 const double pixels_offset, const double samples_per_pixel)
380 bool paint_thr_dots =
381 (base_->get_conversion_type() != data::SignalBase::NoConversion) &&
382 (conversion_threshold_disp_mode_ == GlobalSettings::ConvThrDispMode_Dots);
384 vector<double> thresholds;
386 thresholds = base_->get_conversion_thresholds();
388 // Calculate and paint the sampling points if enabled and useful
389 GlobalSettings settings;
390 const bool show_sampling_points =
391 (settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() ||
392 paint_thr_dots) && (samples_per_pixel < 0.25);
394 p.setPen(base_->color());
396 const int64_t points_count = end - start + 1;
398 QPointF *points = new QPointF[points_count];
399 QPointF *point = points;
401 vector<QRectF> sampling_points[3];
403 int64_t sample_count = min(points_count, TracePaintBlockSize);
404 int64_t block_sample = 0;
405 float *sample_block = new float[TracePaintBlockSize];
406 segment->get_samples(start, start + sample_count, sample_block);
408 if (show_hover_marker_)
409 reset_pixel_values();
412 for (int64_t sample = start; sample <= end; sample++, block_sample++) {
414 // Fetch next block of samples if we finished the current one
415 if (block_sample == TracePaintBlockSize) {
417 sample_count = min(points_count - sample, TracePaintBlockSize);
418 segment->get_samples(sample, sample + sample_count, sample_block);
421 const float abs_x = sample / samples_per_pixel - pixels_offset;
422 const float x = left + abs_x;
424 *point++ = QPointF(x, y - sample_block[block_sample] * scale_);
426 // Generate the pixel<->value lookup table for the mouse hover
427 if (show_hover_marker_)
428 process_next_sample_value(abs_x, sample_block[block_sample]);
430 // Create the sampling points if needed
431 if (show_sampling_points) {
432 int idx = 0; // Neutral
434 if (paint_thr_dots) {
435 if (thresholds.size() == 1)
436 idx = (sample_block[block_sample] >= thresholds[0]) ? 2 : 1;
437 else if (thresholds.size() == 2) {
438 if (sample_block[block_sample] > thresholds[1])
440 else if (sample_block[block_sample] < thresholds[0])
445 sampling_points[idx].emplace_back(x - (w / 2), y - sample_block[block_sample] * scale_ - (w / 2), w, w);
448 delete[] sample_block;
450 p.drawPolyline(points, points_count);
452 if (show_sampling_points) {
453 if (paint_thr_dots) {
454 p.setPen(SamplingPointColorNe);
455 p.drawRects(sampling_points[0].data(), sampling_points[0].size());
456 p.setPen(SamplingPointColorLo);
457 p.drawRects(sampling_points[1].data(), sampling_points[1].size());
458 p.setPen(SamplingPointColorHi);
459 p.drawRects(sampling_points[2].data(), sampling_points[2].size());
461 p.setPen(SamplingPointColor);
462 p.drawRects(sampling_points[0].data(), sampling_points[0].size());
469 void AnalogSignal::paint_envelope(QPainter &p,
470 const shared_ptr<pv::data::AnalogSegment> &segment,
471 int y, int left, const int64_t start, const int64_t end,
472 const double pixels_offset, const double samples_per_pixel)
474 using pv::data::AnalogSegment;
476 // Note: Envelope painting currently doesn't generate a pixel<->value lookup table
477 if (show_hover_marker_)
478 reset_pixel_values();
480 AnalogSegment::EnvelopeSection e;
481 segment->get_envelope_section(e, start, end, samples_per_pixel);
486 p.setPen(QPen(Qt::NoPen));
487 p.setBrush(base_->color());
489 QRectF *const rects = new QRectF[e.length];
490 QRectF *rect = rects;
492 for (uint64_t sample = 0; sample < e.length - 1; sample++) {
493 const float x = ((e.scale * sample + e.start) /
494 samples_per_pixel - pixels_offset) + left;
496 const AnalogSegment::EnvelopeSample *const s = e.samples + sample;
498 // We overlap this sample with the next so that vertical
499 // gaps do not appear during steep rising or falling edges
500 const float b = y - max(s->max, (s + 1)->min) * scale_;
501 const float t = y - min(s->min, (s + 1)->max) * scale_;
504 if (h >= 0.0f && h <= 1.0f)
506 if (h <= 0.0f && h >= -1.0f)
509 *rect++ = QRectF(x, t, 1.0f, h);
512 p.drawRects(rects, e.length);
518 void AnalogSignal::paint_logic_mid(QPainter &p, ViewItemPaintParams &pp)
522 vector< pair<int64_t, bool> > edges;
526 const int y = get_visual_y();
528 if (!base_->enabled() || !base_->logic_data())
531 const int signal_margin =
532 QFontMetrics(QApplication::font()).height() / 2;
534 const int ph = min(pos_vdivs_, 1) * div_height_;
535 const int nh = min(neg_vdivs_, 1) * div_height_;
536 const float high_offset = y - ph + signal_margin + 0.5f;
537 const float low_offset = y + nh - signal_margin - 0.5f;
539 shared_ptr<pv::data::LogicSegment> segment = get_logic_segment_to_paint();
540 if (!segment || (segment->get_sample_count() == 0))
543 double samplerate = segment->samplerate();
545 // Show sample rate as 1Hz when it is unknown
546 if (samplerate == 0.0)
549 const double pixels_offset = pp.pixels_offset();
550 const pv::util::Timestamp& start_time = segment->start_time();
551 const int64_t last_sample = (int64_t)segment->get_sample_count() - 1;
552 const double samples_per_pixel = samplerate * pp.scale();
553 const double pixels_per_sample = 1 / samples_per_pixel;
554 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
555 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
557 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
558 (int64_t)0), last_sample);
559 const uint64_t end_sample = min(max(ceil(end).convert_to<int64_t>(),
560 (int64_t)0), last_sample);
562 segment->get_subsampled_edges(edges, start_sample, end_sample,
563 samples_per_pixel / LogicSignal::Oversampling, 0);
564 assert(edges.size() >= 2);
566 // Check whether we need to paint the sampling points
567 GlobalSettings settings;
568 const bool show_sampling_points =
569 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() &&
570 (samples_per_pixel < 0.25);
572 vector<QRectF> sampling_points;
573 float sampling_point_x = 0.0f;
574 int64_t sampling_point_sample = start_sample;
577 if (show_sampling_points) {
578 sampling_points.reserve(end_sample - start_sample + 1);
579 sampling_point_x = (edges.cbegin()->first / samples_per_pixel - pixels_offset) + pp.left();
583 const unsigned int edge_count = edges.size() - 2;
584 QLineF *const edge_lines = new QLineF[edge_count];
587 for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
588 const float x = ((*i).first / samples_per_pixel -
589 pixels_offset) + pp.left();
590 *line++ = QLineF(x, high_offset, x, low_offset);
592 if (show_sampling_points)
593 while (sampling_point_sample < (*i).first) {
594 const float y = (*i).second ? low_offset : high_offset;
595 sampling_points.emplace_back(
596 QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
597 sampling_point_sample++;
598 sampling_point_x += pixels_per_sample;
602 // Calculate the sample points from the last edge to the end of the trace
603 if (show_sampling_points)
604 while ((uint64_t)sampling_point_sample <= end_sample) {
605 // Signal changed after the last edge, so the level is inverted
606 const float y = (edges.cend() - 1)->second ? high_offset : low_offset;
607 sampling_points.emplace_back(
608 QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
609 sampling_point_sample++;
610 sampling_point_x += pixels_per_sample;
613 p.setPen(LogicSignal::EdgeColor);
614 p.drawLines(edge_lines, edge_count);
618 const unsigned int max_cap_line_count = edges.size();
619 QLineF *const cap_lines = new QLineF[max_cap_line_count];
621 p.setPen(LogicSignal::HighColor);
622 paint_logic_caps(p, cap_lines, edges, true, samples_per_pixel,
623 pixels_offset, pp.left(), high_offset);
624 p.setPen(LogicSignal::LowColor);
625 paint_logic_caps(p, cap_lines, edges, false, samples_per_pixel,
626 pixels_offset, pp.left(), low_offset);
630 // Paint the sampling points
631 if (show_sampling_points) {
632 p.setPen(SamplingPointColor);
633 p.drawRects(sampling_points.data(), sampling_points.size());
637 void AnalogSignal::paint_logic_caps(QPainter &p, QLineF *const lines,
638 vector< pair<int64_t, bool> > &edges, bool level,
639 double samples_per_pixel, double pixels_offset, float x_offset,
642 QLineF *line = lines;
644 for (auto i = edges.begin(); i != (edges.end() - 1); i++)
645 if ((*i).second == level) {
647 ((*i).first / samples_per_pixel -
648 pixels_offset) + x_offset, y_offset,
649 ((*(i+1)).first / samples_per_pixel -
650 pixels_offset) + x_offset, y_offset);
653 p.drawLines(lines, line - lines);
656 shared_ptr<pv::data::AnalogSegment> AnalogSignal::get_analog_segment_to_paint() const
658 shared_ptr<pv::data::AnalogSegment> segment;
660 const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
661 base_->analog_data()->analog_segments();
663 if (!segments.empty()) {
664 if (segment_display_mode_ == ShowLastSegmentOnly)
665 segment = segments.back();
667 if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
668 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
670 segment = segments.at(current_segment_);
671 } catch (out_of_range&) {
672 qDebug() << "Current analog segment out of range for signal" << base_->name() << ":" << current_segment_;
680 shared_ptr<pv::data::LogicSegment> AnalogSignal::get_logic_segment_to_paint() const
682 shared_ptr<pv::data::LogicSegment> segment;
684 const deque< shared_ptr<pv::data::LogicSegment> > &segments =
685 base_->logic_data()->logic_segments();
687 if (!segments.empty()) {
688 if (segment_display_mode_ == ShowLastSegmentOnly)
689 segment = segments.back();
691 if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
692 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
694 segment = segments.at(current_segment_);
695 } catch (out_of_range&) {
696 qDebug() << "Current logic segment out of range for signal" << base_->name() << ":" << current_segment_;
704 float AnalogSignal::get_resolution(int scale_index)
706 const float seq[] = {1.0f, 2.0f, 5.0f};
708 const int offset = numeric_limits<int>::max() / (2 * countof(seq));
709 const div_t d = div((int)(scale_index + countof(seq) * offset),
712 return powf(10.0f, d.quot - offset) * seq[d.rem];
715 void AnalogSignal::update_scale()
717 resolution_ = get_resolution(scale_index_);
718 scale_ = div_height_ / resolution_;
721 void AnalogSignal::update_conversion_widgets()
723 SignalBase::ConversionType conv_type = base_->get_conversion_type();
725 // Enable or disable widgets depending on conversion state
726 conv_threshold_cb_->setEnabled(conv_type != SignalBase::NoConversion);
727 display_type_cb_->setEnabled(conv_type != SignalBase::NoConversion);
729 conv_threshold_cb_->clear();
731 vector < pair<QString, int> > presets = base_->get_conversion_presets();
733 // Prevent the combo box from firing the "edit text changed" signal
734 // as that would involuntarily select the first entry
735 conv_threshold_cb_->blockSignals(true);
737 // Set available options depending on chosen conversion
738 for (pair<QString, int> preset : presets)
739 conv_threshold_cb_->addItem(preset.first, preset.second);
741 map < QString, QVariant > options = base_->get_conversion_options();
743 if (conv_type == SignalBase::A2LConversionByThreshold) {
744 const vector<double> thresholds = base_->get_conversion_thresholds(
745 SignalBase::A2LConversionByThreshold, true);
746 conv_threshold_cb_->addItem(
747 QString("%1V").arg(QString::number(thresholds[0], 'f', 1)), -1);
750 if (conv_type == SignalBase::A2LConversionBySchmittTrigger) {
751 const vector<double> thresholds = base_->get_conversion_thresholds(
752 SignalBase::A2LConversionBySchmittTrigger, true);
753 conv_threshold_cb_->addItem(QString("%1V/%2V").arg(
754 QString::number(thresholds[0], 'f', 1),
755 QString::number(thresholds[1], 'f', 1)), -1);
758 int preset_id = base_->get_current_conversion_preset();
759 conv_threshold_cb_->setCurrentIndex(
760 conv_threshold_cb_->findData(preset_id));
762 conv_threshold_cb_->blockSignals(false);
765 void AnalogSignal::perform_autoranging(bool keep_divs, bool force_update)
767 const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
768 base_->analog_data()->analog_segments();
770 if (segments.empty())
773 static double prev_min = 0, prev_max = 0;
774 double min = 0, max = 0;
776 for (shared_ptr<pv::data::AnalogSegment> segment : segments) {
777 pair<double, double> mm = segment->get_min_max();
778 min = std::min(min, mm.first);
779 max = std::max(max, mm.second);
782 if ((min == prev_min) && (max == prev_max) && !force_update)
788 // If we're allowed to alter the div assignment...
790 // Use all divs for the positive range if there are no negative values
791 if ((min == 0) && (neg_vdivs_ > 0)) {
792 pos_vdivs_ += neg_vdivs_;
796 // Split up the divs if there are negative values but no negative divs
797 if ((min < 0) && (neg_vdivs_ == 0)) {
798 neg_vdivs_ = pos_vdivs_ / 2;
799 pos_vdivs_ -= neg_vdivs_;
803 // If there is still no positive div when we need it, add one
804 // (this can happen when pos_vdivs==neg_vdivs==0)
805 if ((max > 0) && (pos_vdivs_ == 0)) {
807 owner_->extents_changed(false, true);
810 // If there is still no negative div when we need it, add one
811 // (this can happen when pos_vdivs was 0 or 1 when trying to split)
812 if ((min < 0) && (neg_vdivs_ == 0)) {
814 owner_->extents_changed(false, true);
817 double min_value_per_div;
818 if ((pos_vdivs_ > 0) && (neg_vdivs_ > 0))
819 min_value_per_div = std::max(max / pos_vdivs_, -min / neg_vdivs_);
820 else if (pos_vdivs_ > 0)
821 min_value_per_div = max / pos_vdivs_;
823 min_value_per_div = -min / neg_vdivs_;
825 // Find first scale value that is bigger than the value we need
826 for (int i = MinScaleIndex; i < MaxScaleIndex; i++)
827 if (get_resolution(i) > min_value_per_div) {
835 void AnalogSignal::reset_pixel_values()
837 value_at_pixel_pos_.clear();
838 current_pixel_pos_ = -1;
839 prev_value_at_pixel_ = std::numeric_limits<float>::quiet_NaN();
842 void AnalogSignal::process_next_sample_value(float x, float value)
844 // Note: NAN is used to indicate the non-existance of a value at this pixel
846 if (std::isnan(prev_value_at_pixel_)) {
848 min_value_at_pixel_ = value;
849 max_value_at_pixel_ = value;
850 prev_value_at_pixel_ = value;
851 current_pixel_pos_ = x;
853 prev_value_at_pixel_ = std::numeric_limits<float>::quiet_NaN();
856 const int pixel_pos = (int)(x + 0.5);
858 if (pixel_pos > current_pixel_pos_) {
859 if (pixel_pos - current_pixel_pos_ == 1) {
860 if (std::isnan(prev_value_at_pixel_)) {
861 value_at_pixel_pos_.push_back(prev_value_at_pixel_);
863 // Average the min/max range to create one value for the previous pixel
864 const float avg = (min_value_at_pixel_ + max_value_at_pixel_) / 2;
865 value_at_pixel_pos_.push_back(avg);
868 // Interpolate values to create values for the intermediate pixels
869 const float start_value = prev_value_at_pixel_;
870 const float end_value = value;
871 const int steps = fabs(pixel_pos - current_pixel_pos_);
872 const double gradient = (end_value - start_value) / steps;
873 for (int i = 0; i < steps; i++) {
874 if (current_pixel_pos_ + i < 0)
876 value_at_pixel_pos_.push_back(start_value + i * gradient);
880 min_value_at_pixel_ = value;
881 max_value_at_pixel_ = value;
882 prev_value_at_pixel_ = value;
883 current_pixel_pos_ = pixel_pos;
885 // Another sample for the same pixel
886 if (value < min_value_at_pixel_)
887 min_value_at_pixel_ = value;
888 if (value > max_value_at_pixel_)
889 max_value_at_pixel_ = value;
893 void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
895 // Add the standard options
896 Signal::populate_popup_form(parent, form);
898 QFormLayout *const layout = new QFormLayout;
900 // Add div-related settings
901 pvdiv_sb_ = new QSpinBox(parent);
902 pvdiv_sb_->setRange(0, MaximumVDivs);
903 pvdiv_sb_->setValue(pos_vdivs_);
904 connect(pvdiv_sb_, SIGNAL(valueChanged(int)),
905 this, SLOT(on_pos_vdivs_changed(int)));
906 layout->addRow(tr("Number of pos vertical divs"), pvdiv_sb_);
908 nvdiv_sb_ = new QSpinBox(parent);
909 nvdiv_sb_->setRange(0, MaximumVDivs);
910 nvdiv_sb_->setValue(neg_vdivs_);
911 connect(nvdiv_sb_, SIGNAL(valueChanged(int)),
912 this, SLOT(on_neg_vdivs_changed(int)));
913 layout->addRow(tr("Number of neg vertical divs"), nvdiv_sb_);
915 div_height_sb_ = new QSpinBox(parent);
916 div_height_sb_->setRange(20, 1000);
917 div_height_sb_->setSingleStep(5);
918 div_height_sb_->setSuffix(tr(" pixels"));
919 div_height_sb_->setValue(div_height_);
920 connect(div_height_sb_, SIGNAL(valueChanged(int)),
921 this, SLOT(on_div_height_changed(int)));
922 layout->addRow(tr("Div height"), div_height_sb_);
924 // Add the vertical resolution
925 resolution_cb_ = new QComboBox(parent);
927 for (int i = MinScaleIndex; i < MaxScaleIndex; i++) {
928 const QString label = QString("%1").arg(get_resolution(i));
929 resolution_cb_->insertItem(0, label, QVariant(i));
932 int cur_idx = resolution_cb_->findData(QVariant(scale_index_));
933 resolution_cb_->setCurrentIndex(cur_idx);
935 connect(resolution_cb_, SIGNAL(currentIndexChanged(int)),
936 this, SLOT(on_resolution_changed(int)));
938 QGridLayout *const vdiv_layout = new QGridLayout;
939 QLabel *const vdiv_unit = new QLabel(tr("V/div"));
940 vdiv_layout->addWidget(resolution_cb_, 0, 0);
941 vdiv_layout->addWidget(vdiv_unit, 0, 1);
943 layout->addRow(tr("Vertical resolution"), vdiv_layout);
945 // Add the autoranging checkbox
946 QCheckBox* autoranging_cb = new QCheckBox();
947 autoranging_cb->setCheckState(autoranging_ ? Qt::Checked : Qt::Unchecked);
949 connect(autoranging_cb, SIGNAL(stateChanged(int)),
950 this, SLOT(on_autoranging_changed(int)));
952 layout->addRow(tr("Autoranging"), autoranging_cb);
954 // Add the conversion type dropdown
955 conversion_cb_ = new QComboBox();
957 conversion_cb_->addItem(tr("none"),
958 SignalBase::NoConversion);
959 conversion_cb_->addItem(tr("to logic via threshold"),
960 SignalBase::A2LConversionByThreshold);
961 conversion_cb_->addItem(tr("to logic via schmitt-trigger"),
962 SignalBase::A2LConversionBySchmittTrigger);
964 cur_idx = conversion_cb_->findData(QVariant(base_->get_conversion_type()));
965 conversion_cb_->setCurrentIndex(cur_idx);
967 layout->addRow(tr("Conversion"), conversion_cb_);
969 connect(conversion_cb_, SIGNAL(currentIndexChanged(int)),
970 this, SLOT(on_conversion_changed(int)));
972 // Add the conversion threshold settings
973 conv_threshold_cb_ = new QComboBox();
974 conv_threshold_cb_->setEditable(true);
976 layout->addRow(tr("Conversion threshold(s)"), conv_threshold_cb_);
978 connect(conv_threshold_cb_, SIGNAL(currentIndexChanged(int)),
979 this, SLOT(on_conv_threshold_changed(int)));
980 connect(conv_threshold_cb_, SIGNAL(editTextChanged(const QString&)),
981 this, SLOT(on_conv_threshold_changed())); // index will be -1
983 // Add the display type dropdown
984 display_type_cb_ = new QComboBox();
986 display_type_cb_->addItem(tr("analog"), DisplayAnalog);
987 display_type_cb_->addItem(tr("converted"), DisplayConverted);
988 display_type_cb_->addItem(tr("analog+converted"), DisplayBoth);
990 cur_idx = display_type_cb_->findData(QVariant(display_type_));
991 display_type_cb_->setCurrentIndex(cur_idx);
993 layout->addRow(tr("Show traces for"), display_type_cb_);
995 connect(display_type_cb_, SIGNAL(currentIndexChanged(int)),
996 this, SLOT(on_display_type_changed(int)));
998 // Update the conversion widget contents and states
999 update_conversion_widgets();
1001 form->addRow(layout);
1004 void AnalogSignal::hover_point_changed(const QPoint &hp)
1006 Signal::hover_point_changed(hp);
1008 // Note: Even though the view area begins at 0, we exclude 0 because
1009 // that's also the value given when the cursor is over the header to the
1010 // left of the trace paint area
1012 value_at_hover_pos_ = std::numeric_limits<float>::quiet_NaN();
1015 value_at_hover_pos_ = value_at_pixel_pos_.at(hp.x());
1016 } catch (out_of_range) {
1017 value_at_hover_pos_ = std::numeric_limits<float>::quiet_NaN();
1022 void AnalogSignal::on_min_max_changed(float min, float max)
1028 perform_autoranging(false, false);
1031 void AnalogSignal::on_pos_vdivs_changed(int vdivs)
1033 if (vdivs == pos_vdivs_)
1038 // There has to be at least one div, positive or negative
1039 if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
1042 pvdiv_sb_->setValue(pos_vdivs_);
1046 perform_autoranging(true, true);
1048 // It could be that a positive or negative div was added, so update
1050 pvdiv_sb_->setValue(pos_vdivs_);
1051 nvdiv_sb_->setValue(neg_vdivs_);
1056 // Call order is important, otherwise the lazy event handler won't work
1057 owner_->extents_changed(false, true);
1058 owner_->row_item_appearance_changed(false, true);
1062 void AnalogSignal::on_neg_vdivs_changed(int vdivs)
1064 if (vdivs == neg_vdivs_)
1069 // There has to be at least one div, positive or negative
1070 if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
1073 pvdiv_sb_->setValue(pos_vdivs_);
1077 perform_autoranging(true, true);
1079 // It could be that a positive or negative div was added, so update
1081 pvdiv_sb_->setValue(pos_vdivs_);
1082 nvdiv_sb_->setValue(neg_vdivs_);
1087 // Call order is important, otherwise the lazy event handler won't work
1088 owner_->extents_changed(false, true);
1089 owner_->row_item_appearance_changed(false, true);
1093 void AnalogSignal::on_div_height_changed(int height)
1095 div_height_ = height;
1099 // Call order is important, otherwise the lazy event handler won't work
1100 owner_->extents_changed(false, true);
1101 owner_->row_item_appearance_changed(false, true);
1105 void AnalogSignal::on_resolution_changed(int index)
1107 scale_index_ = resolution_cb_->itemData(index).toInt();
1111 owner_->row_item_appearance_changed(false, true);
1114 void AnalogSignal::on_autoranging_changed(int state)
1116 autoranging_ = (state == Qt::Checked);
1119 perform_autoranging(false, true);
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_conversion_changed(int index)
1130 SignalBase::ConversionType old_conv_type = base_->get_conversion_type();
1132 SignalBase::ConversionType conv_type =
1133 (SignalBase::ConversionType)(conversion_cb_->itemData(index).toInt());
1135 if (conv_type != old_conv_type) {
1136 base_->set_conversion_type(conv_type);
1137 update_conversion_widgets();
1140 owner_->row_item_appearance_changed(false, true);
1144 void AnalogSignal::on_conv_threshold_changed(int index)
1146 SignalBase::ConversionType conv_type = base_->get_conversion_type();
1148 // Note: index is set to -1 if the text in the combo box matches none of
1149 // the entries in the combo box
1151 if ((index == -1) && (conv_threshold_cb_->currentText().length() == 0))
1154 // The combo box entry with the custom value has user_data set to -1
1155 const int user_data = conv_threshold_cb_->findText(
1156 conv_threshold_cb_->currentText());
1158 const bool use_custom_thr = (index == -1) || (user_data == -1);
1160 if (conv_type == SignalBase::A2LConversionByThreshold && use_custom_thr) {
1161 // Not one of the preset values, try to parse the combo box text
1162 // Note: Regex loosely based on
1163 // https://txt2re.com/index-c++.php3?s=0.1V&1&-13
1164 QString re1 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1165 QString re2 = "([a-zA-Z]*)"; // SI unit
1166 QRegExp regex(re1 + re2);
1168 const QString text = conv_threshold_cb_->currentText();
1169 if (!regex.exactMatch(text))
1170 return; // String doesn't match the regex
1172 QStringList tokens = regex.capturedTexts();
1174 // For now, we simply assume that the unit is volt without modifiers
1175 const double thr = tokens.at(1).toDouble();
1177 // Only restart the conversion if the threshold was updated.
1178 // We're starting a delayed conversion because the user may still be
1179 // typing and the UI would lag if we kept on restarting it immediately
1180 if (base_->set_conversion_option("threshold_value", thr))
1181 base_->start_conversion(true);
1184 if (conv_type == SignalBase::A2LConversionBySchmittTrigger && use_custom_thr) {
1185 // Not one of the preset values, try to parse the combo box text
1186 // Note: Regex loosely based on
1187 // https://txt2re.com/index-c++.php3?s=0.1V/0.2V&2&14&-22&3&15
1188 QString re1 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1189 QString re2 = "([a-zA-Z]*)"; // SI unit
1190 QString re3 = "\\/"; // Forward slash, not captured
1191 QString re4 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1192 QString re5 = "([a-zA-Z]*)"; // SI unit
1193 QRegExp regex(re1 + re2 + re3 + re4 + re5);
1195 const QString text = conv_threshold_cb_->currentText();
1196 if (!regex.exactMatch(text))
1197 return; // String doesn't match the regex
1199 QStringList tokens = regex.capturedTexts();
1201 // For now, we simply assume that the unit is volt without modifiers
1202 const double low_thr = tokens.at(1).toDouble();
1203 const double high_thr = tokens.at(3).toDouble();
1205 // Only restart the conversion if one of the options was updated.
1206 // We're starting a delayed conversion because the user may still be
1207 // typing and the UI would lag if we kept on restarting it immediately
1208 bool o1 = base_->set_conversion_option("threshold_value_low", low_thr);
1209 bool o2 = base_->set_conversion_option("threshold_value_high", high_thr);
1211 base_->start_conversion(true); // Start delayed conversion
1214 base_->set_conversion_preset((SignalBase::ConversionPreset)index);
1216 // Immediately start the conversion if we're not using custom values
1217 // (i.e. we're using one of the presets)
1218 if (!use_custom_thr)
1219 base_->start_conversion();
1222 void AnalogSignal::on_delayed_conversion_starter()
1224 base_->start_conversion();
1227 void AnalogSignal::on_display_type_changed(int index)
1229 display_type_ = (DisplayType)(display_type_cb_->itemData(index).toInt());
1232 owner_->row_item_appearance_changed(false, true);
1235 void AnalogSignal::on_settingViewConversionThresholdDispMode_changed(const QVariant new_value)
1237 conversion_threshold_disp_mode_ = new_value.toInt();
1240 owner_->row_item_appearance_changed(false, true);
1243 } // namespace trace
1244 } // namespace views