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),
113 value_at_hover_pos_(std::numeric_limits<float>::quiet_NaN())
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 void AnalogSignal::on_setting_changed(const QString &key, const QVariant &value)
188 Signal::on_setting_changed(key, value);
190 if (key == GlobalSettings::Key_View_ConversionThresholdDispMode)
191 on_settingViewConversionThresholdDispMode_changed(value);
194 void AnalogSignal::paint_back(QPainter &p, ViewItemPaintParams &pp)
196 if (!base_->enabled())
200 conversion_threshold_disp_mode_ == GlobalSettings::ConvThrDispMode_Background;
202 const vector<double> thresholds = base_->get_conversion_thresholds();
204 // Only display thresholds if we have some and we show analog samples
205 if ((thresholds.size() > 0) && paint_thr_bg &&
206 ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth))) {
208 const int visual_y = get_visual_y();
209 const pair<int, int> extents = v_extents();
210 const int top = visual_y + extents.first;
211 const int btm = visual_y + extents.second;
213 // Draw high/neutral/low areas
214 if (thresholds.size() == 2) {
215 int thr_lo = visual_y - thresholds[0] * scale_;
216 int thr_hi = visual_y - thresholds[1] * scale_;
217 thr_lo = min(max(thr_lo, top), btm);
218 thr_hi = min(max(thr_hi, top), btm);
220 p.fillRect(QRectF(pp.left(), top, pp.width(), thr_hi - top),
221 QBrush(ThresholdColorHi));
222 p.fillRect(QRectF(pp.left(), thr_hi, pp.width(), thr_lo - thr_hi),
223 QBrush(ThresholdColorNe));
224 p.fillRect(QRectF(pp.left(), thr_lo, pp.width(), btm - thr_lo),
225 QBrush(ThresholdColorLo));
227 int thr = visual_y - thresholds[0] * scale_;
228 thr = min(max(thr, top), btm);
230 p.fillRect(QRectF(pp.left(), top, pp.width(), thr - top),
231 QBrush(ThresholdColorHi));
232 p.fillRect(QRectF(pp.left(), thr, pp.width(), btm - thr),
233 QBrush(ThresholdColorLo));
236 paint_axis(p, pp, get_visual_y());
238 Trace::paint_back(p, pp);
239 paint_axis(p, pp, get_visual_y());
243 void AnalogSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
245 assert(base_->analog_data());
248 const int y = get_visual_y();
250 if (!base_->enabled())
253 if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
254 paint_grid(p, y, pp.left(), pp.right());
256 shared_ptr<pv::data::AnalogSegment> segment = get_analog_segment_to_paint();
257 if (!segment || (segment->get_sample_count() == 0))
260 const double pixels_offset = pp.pixels_offset();
261 const double samplerate = max(1.0, segment->samplerate());
262 const pv::util::Timestamp& start_time = segment->start_time();
263 const int64_t last_sample = (int64_t)segment->get_sample_count() - 1;
264 const double samples_per_pixel = samplerate * pp.scale();
265 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
266 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
268 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
269 (int64_t)0), last_sample);
270 const int64_t end_sample = min(max((ceil(end) + 1).convert_to<int64_t>(),
271 (int64_t)0), last_sample);
273 if (samples_per_pixel < EnvelopeThreshold)
274 paint_trace(p, segment, y, pp.left(), start_sample, end_sample,
275 pixels_offset, samples_per_pixel);
277 paint_envelope(p, segment, y, pp.left(), start_sample, end_sample,
278 pixels_offset, samples_per_pixel);
281 if ((display_type_ == DisplayConverted) || (display_type_ == DisplayBoth))
282 paint_logic_mid(p, pp);
285 void AnalogSignal::paint_fore(QPainter &p, ViewItemPaintParams &pp)
290 if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
291 const int y = get_visual_y();
295 // Show the info section on the right side of the trace, including
296 // the value at the hover point when the hover marker is enabled
297 // and we have corresponding data available
298 if (show_hover_marker_ && !std::isnan(value_at_hover_pos_)) {
299 infotext = QString("[%1] %2 V/div")
300 .arg(format_value_si(value_at_hover_pos_, SIPrefix::unspecified, 0, "V", false))
303 infotext = QString("%1 V/div").arg(resolution_);
305 p.setPen(base_->color());
306 p.setFont(QApplication::font());
308 const QRectF bounding_rect = QRectF(pp.left(),
309 y + v_extents().first,
310 pp.width() - InfoTextMarginRight,
311 v_extents().second - v_extents().first - InfoTextMarginBottom);
313 p.drawText(bounding_rect, Qt::AlignRight | Qt::AlignBottom, infotext);
316 if (show_hover_marker_)
317 paint_hover_marker(p);
320 void AnalogSignal::paint_grid(QPainter &p, int y, int left, int right)
322 p.setRenderHint(QPainter::Antialiasing, false);
324 GlobalSettings settings;
325 const bool show_analog_minor_grid =
326 settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool();
328 if (pos_vdivs_ > 0) {
329 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
330 for (int i = 1; i <= pos_vdivs_; i++) {
331 const float dy = i * div_height_;
332 p.drawLine(QLineF(left, y - dy, right, y - dy));
336 if ((pos_vdivs_ > 0) && show_analog_minor_grid) {
337 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
338 for (int i = 0; i < pos_vdivs_; i++) {
339 const float dy = i * div_height_;
340 const float dy25 = dy + (0.25 * div_height_);
341 const float dy50 = dy + (0.50 * div_height_);
342 const float dy75 = dy + (0.75 * div_height_);
343 p.drawLine(QLineF(left, y - dy25, right, y - dy25));
344 p.drawLine(QLineF(left, y - dy50, right, y - dy50));
345 p.drawLine(QLineF(left, y - dy75, right, y - dy75));
349 if (neg_vdivs_ > 0) {
350 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
351 for (int i = 1; i <= neg_vdivs_; i++) {
352 const float dy = i * div_height_;
353 p.drawLine(QLineF(left, y + dy, right, y + dy));
357 if ((pos_vdivs_ > 0) && show_analog_minor_grid) {
358 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
359 for (int i = 0; i < neg_vdivs_; i++) {
360 const float dy = i * div_height_;
361 const float dy25 = dy + (0.25 * div_height_);
362 const float dy50 = dy + (0.50 * div_height_);
363 const float dy75 = dy + (0.75 * div_height_);
364 p.drawLine(QLineF(left, y + dy25, right, y + dy25));
365 p.drawLine(QLineF(left, y + dy50, right, y + dy50));
366 p.drawLine(QLineF(left, y + dy75, right, y + dy75));
370 p.setRenderHint(QPainter::Antialiasing, true);
373 void AnalogSignal::paint_trace(QPainter &p,
374 const shared_ptr<pv::data::AnalogSegment> &segment,
375 int y, int left, const int64_t start, const int64_t end,
376 const double pixels_offset, const double samples_per_pixel)
381 bool paint_thr_dots =
382 (base_->get_conversion_type() != data::SignalBase::NoConversion) &&
383 (conversion_threshold_disp_mode_ == GlobalSettings::ConvThrDispMode_Dots);
385 vector<double> thresholds;
387 thresholds = base_->get_conversion_thresholds();
389 // Calculate and paint the sampling points if enabled and useful
390 GlobalSettings settings;
391 const bool show_sampling_points =
392 (settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() ||
393 paint_thr_dots) && (samples_per_pixel < 0.25);
395 p.setPen(base_->color());
397 const int64_t points_count = end - start + 1;
399 QPointF *points = new QPointF[points_count];
400 QPointF *point = points;
402 vector<QRectF> sampling_points[3];
404 int64_t sample_count = min(points_count, TracePaintBlockSize);
405 int64_t block_sample = 0;
406 float *sample_block = new float[TracePaintBlockSize];
407 segment->get_samples(start, start + sample_count, sample_block);
409 if (show_hover_marker_)
410 reset_pixel_values();
413 for (int64_t sample = start; sample <= end; sample++, block_sample++) {
415 // Fetch next block of samples if we finished the current one
416 if (block_sample == TracePaintBlockSize) {
418 sample_count = min(points_count - sample, TracePaintBlockSize);
419 segment->get_samples(sample, sample + sample_count, sample_block);
422 const float abs_x = sample / samples_per_pixel - pixels_offset;
423 const float x = left + abs_x;
425 *point++ = QPointF(x, y - sample_block[block_sample] * scale_);
427 // Generate the pixel<->value lookup table for the mouse hover
428 if (show_hover_marker_)
429 process_next_sample_value(abs_x, sample_block[block_sample]);
431 // Create the sampling points if needed
432 if (show_sampling_points) {
433 int idx = 0; // Neutral
435 if (paint_thr_dots) {
436 if (thresholds.size() == 1)
437 idx = (sample_block[block_sample] >= thresholds[0]) ? 2 : 1;
438 else if (thresholds.size() == 2) {
439 if (sample_block[block_sample] > thresholds[1])
441 else if (sample_block[block_sample] < thresholds[0])
446 sampling_points[idx].emplace_back(x - (w / 2), y - sample_block[block_sample] * scale_ - (w / 2), w, w);
449 delete[] sample_block;
451 p.drawPolyline(points, points_count);
453 if (show_sampling_points) {
454 if (paint_thr_dots) {
455 p.setPen(SamplingPointColorNe);
456 p.drawRects(sampling_points[0].data(), sampling_points[0].size());
457 p.setPen(SamplingPointColorLo);
458 p.drawRects(sampling_points[1].data(), sampling_points[1].size());
459 p.setPen(SamplingPointColorHi);
460 p.drawRects(sampling_points[2].data(), sampling_points[2].size());
462 p.setPen(SamplingPointColor);
463 p.drawRects(sampling_points[0].data(), sampling_points[0].size());
470 void AnalogSignal::paint_envelope(QPainter &p,
471 const shared_ptr<pv::data::AnalogSegment> &segment,
472 int y, int left, const int64_t start, const int64_t end,
473 const double pixels_offset, const double samples_per_pixel)
475 using pv::data::AnalogSegment;
477 // Note: Envelope painting currently doesn't generate a pixel<->value lookup table
478 if (show_hover_marker_)
479 reset_pixel_values();
481 AnalogSegment::EnvelopeSection e;
482 segment->get_envelope_section(e, start, end, samples_per_pixel);
487 p.setPen(QPen(Qt::NoPen));
488 p.setBrush(base_->color());
490 QRectF *const rects = new QRectF[e.length];
491 QRectF *rect = rects;
493 for (uint64_t sample = 0; sample < e.length - 1; sample++) {
494 const float x = ((e.scale * sample + e.start) /
495 samples_per_pixel - pixels_offset) + left;
497 const AnalogSegment::EnvelopeSample *const s = e.samples + sample;
499 // We overlap this sample with the next so that vertical
500 // gaps do not appear during steep rising or falling edges
501 const float b = y - max(s->max, (s + 1)->min) * scale_;
502 const float t = y - min(s->min, (s + 1)->max) * scale_;
505 if (h >= 0.0f && h <= 1.0f)
507 if (h <= 0.0f && h >= -1.0f)
510 *rect++ = QRectF(x, t, 1.0f, h);
513 p.drawRects(rects, e.length);
519 void AnalogSignal::paint_logic_mid(QPainter &p, ViewItemPaintParams &pp)
523 vector< pair<int64_t, bool> > edges;
527 const int y = get_visual_y();
529 if (!base_->enabled() || !base_->logic_data())
532 const int signal_margin =
533 QFontMetrics(QApplication::font()).height() / 2;
535 const int ph = min(pos_vdivs_, 1) * div_height_;
536 const int nh = min(neg_vdivs_, 1) * div_height_;
537 const float high_offset = y - ph + signal_margin + 0.5f;
538 const float low_offset = y + nh - signal_margin - 0.5f;
540 shared_ptr<pv::data::LogicSegment> segment = get_logic_segment_to_paint();
541 if (!segment || (segment->get_sample_count() == 0))
544 double samplerate = segment->samplerate();
546 // Show sample rate as 1Hz when it is unknown
547 if (samplerate == 0.0)
550 const double pixels_offset = pp.pixels_offset();
551 const pv::util::Timestamp& start_time = segment->start_time();
552 const int64_t last_sample = (int64_t)segment->get_sample_count() - 1;
553 const double samples_per_pixel = samplerate * pp.scale();
554 const double pixels_per_sample = 1 / samples_per_pixel;
555 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
556 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
558 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
559 (int64_t)0), last_sample);
560 const uint64_t end_sample = min(max(ceil(end).convert_to<int64_t>(),
561 (int64_t)0), last_sample);
563 segment->get_subsampled_edges(edges, start_sample, end_sample,
564 samples_per_pixel / LogicSignal::Oversampling, 0);
565 assert(edges.size() >= 2);
567 // Check whether we need to paint the sampling points
568 GlobalSettings settings;
569 const bool show_sampling_points =
570 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() &&
571 (samples_per_pixel < 0.25);
573 vector<QRectF> sampling_points;
574 float sampling_point_x = 0.0f;
575 int64_t sampling_point_sample = start_sample;
578 if (show_sampling_points) {
579 sampling_points.reserve(end_sample - start_sample + 1);
580 sampling_point_x = (edges.cbegin()->first / samples_per_pixel - pixels_offset) + pp.left();
584 const unsigned int edge_count = edges.size() - 2;
585 QLineF *const edge_lines = new QLineF[edge_count];
588 for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
589 const float x = ((*i).first / samples_per_pixel -
590 pixels_offset) + pp.left();
591 *line++ = QLineF(x, high_offset, x, low_offset);
593 if (show_sampling_points)
594 while (sampling_point_sample < (*i).first) {
595 const float y = (*i).second ? low_offset : high_offset;
596 sampling_points.emplace_back(
597 QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
598 sampling_point_sample++;
599 sampling_point_x += pixels_per_sample;
603 // Calculate the sample points from the last edge to the end of the trace
604 if (show_sampling_points)
605 while ((uint64_t)sampling_point_sample <= end_sample) {
606 // Signal changed after the last edge, so the level is inverted
607 const float y = (edges.cend() - 1)->second ? high_offset : low_offset;
608 sampling_points.emplace_back(
609 QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
610 sampling_point_sample++;
611 sampling_point_x += pixels_per_sample;
614 p.setPen(LogicSignal::EdgeColor);
615 p.drawLines(edge_lines, edge_count);
619 const unsigned int max_cap_line_count = edges.size();
620 QLineF *const cap_lines = new QLineF[max_cap_line_count];
622 p.setPen(LogicSignal::HighColor);
623 paint_logic_caps(p, cap_lines, edges, true, samples_per_pixel,
624 pixels_offset, pp.left(), high_offset);
625 p.setPen(LogicSignal::LowColor);
626 paint_logic_caps(p, cap_lines, edges, false, samples_per_pixel,
627 pixels_offset, pp.left(), low_offset);
631 // Paint the sampling points
632 if (show_sampling_points) {
633 p.setPen(SamplingPointColor);
634 p.drawRects(sampling_points.data(), sampling_points.size());
638 void AnalogSignal::paint_logic_caps(QPainter &p, QLineF *const lines,
639 vector< pair<int64_t, bool> > &edges, bool level,
640 double samples_per_pixel, double pixels_offset, float x_offset,
643 QLineF *line = lines;
645 for (auto i = edges.begin(); i != (edges.end() - 1); i++)
646 if ((*i).second == level) {
648 ((*i).first / samples_per_pixel -
649 pixels_offset) + x_offset, y_offset,
650 ((*(i+1)).first / samples_per_pixel -
651 pixels_offset) + x_offset, y_offset);
654 p.drawLines(lines, line - lines);
657 shared_ptr<pv::data::AnalogSegment> AnalogSignal::get_analog_segment_to_paint() const
659 shared_ptr<pv::data::AnalogSegment> segment;
661 const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
662 base_->analog_data()->analog_segments();
664 if (!segments.empty()) {
665 if (segment_display_mode_ == ShowLastSegmentOnly)
666 segment = segments.back();
668 if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
669 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
671 segment = segments.at(current_segment_);
672 } catch (out_of_range&) {
673 qDebug() << "Current analog segment out of range for signal" << base_->name() << ":" << current_segment_;
681 shared_ptr<pv::data::LogicSegment> AnalogSignal::get_logic_segment_to_paint() const
683 shared_ptr<pv::data::LogicSegment> segment;
685 const deque< shared_ptr<pv::data::LogicSegment> > &segments =
686 base_->logic_data()->logic_segments();
688 if (!segments.empty()) {
689 if (segment_display_mode_ == ShowLastSegmentOnly)
690 segment = segments.back();
692 if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
693 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
695 segment = segments.at(current_segment_);
696 } catch (out_of_range&) {
697 qDebug() << "Current logic segment out of range for signal" << base_->name() << ":" << current_segment_;
705 float AnalogSignal::get_resolution(int scale_index)
707 const float seq[] = {1.0f, 2.0f, 5.0f};
709 const int offset = numeric_limits<int>::max() / (2 * countof(seq));
710 const div_t d = div((int)(scale_index + countof(seq) * offset),
713 return powf(10.0f, d.quot - offset) * seq[d.rem];
716 void AnalogSignal::update_scale()
718 resolution_ = get_resolution(scale_index_);
719 scale_ = div_height_ / resolution_;
722 void AnalogSignal::update_conversion_widgets()
724 SignalBase::ConversionType conv_type = base_->get_conversion_type();
726 // Enable or disable widgets depending on conversion state
727 conv_threshold_cb_->setEnabled(conv_type != SignalBase::NoConversion);
728 display_type_cb_->setEnabled(conv_type != SignalBase::NoConversion);
730 conv_threshold_cb_->clear();
732 vector < pair<QString, int> > presets = base_->get_conversion_presets();
734 // Prevent the combo box from firing the "edit text changed" signal
735 // as that would involuntarily select the first entry
736 conv_threshold_cb_->blockSignals(true);
738 // Set available options depending on chosen conversion
739 for (pair<QString, int> preset : presets)
740 conv_threshold_cb_->addItem(preset.first, preset.second);
742 map < QString, QVariant > options = base_->get_conversion_options();
744 if (conv_type == SignalBase::A2LConversionByThreshold) {
745 const vector<double> thresholds = base_->get_conversion_thresholds(
746 SignalBase::A2LConversionByThreshold, true);
747 conv_threshold_cb_->addItem(
748 QString("%1V").arg(QString::number(thresholds[0], 'f', 1)), -1);
751 if (conv_type == SignalBase::A2LConversionBySchmittTrigger) {
752 const vector<double> thresholds = base_->get_conversion_thresholds(
753 SignalBase::A2LConversionBySchmittTrigger, true);
754 conv_threshold_cb_->addItem(QString("%1V/%2V").arg(
755 QString::number(thresholds[0], 'f', 1),
756 QString::number(thresholds[1], 'f', 1)), -1);
759 int preset_id = base_->get_current_conversion_preset();
760 conv_threshold_cb_->setCurrentIndex(
761 conv_threshold_cb_->findData(preset_id));
763 conv_threshold_cb_->blockSignals(false);
766 void AnalogSignal::perform_autoranging(bool keep_divs, bool force_update)
768 const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
769 base_->analog_data()->analog_segments();
771 if (segments.empty())
774 static double prev_min = 0, prev_max = 0;
775 double min = 0, max = 0;
777 for (shared_ptr<pv::data::AnalogSegment> segment : segments) {
778 pair<double, double> mm = segment->get_min_max();
779 min = std::min(min, mm.first);
780 max = std::max(max, mm.second);
783 if ((min == prev_min) && (max == prev_max) && !force_update)
789 // If we're allowed to alter the div assignment...
791 // Use all divs for the positive range if there are no negative values
792 if ((min == 0) && (neg_vdivs_ > 0)) {
793 pos_vdivs_ += neg_vdivs_;
797 // Split up the divs if there are negative values but no negative divs
798 if ((min < 0) && (neg_vdivs_ == 0)) {
799 neg_vdivs_ = pos_vdivs_ / 2;
800 pos_vdivs_ -= neg_vdivs_;
804 // If there is still no positive div when we need it, add one
805 // (this can happen when pos_vdivs==neg_vdivs==0)
806 if ((max > 0) && (pos_vdivs_ == 0)) {
808 owner_->extents_changed(false, true);
811 // If there is still no negative div when we need it, add one
812 // (this can happen when pos_vdivs was 0 or 1 when trying to split)
813 if ((min < 0) && (neg_vdivs_ == 0)) {
815 owner_->extents_changed(false, true);
818 double min_value_per_div;
819 if ((pos_vdivs_ > 0) && (neg_vdivs_ > 0))
820 min_value_per_div = std::max(max / pos_vdivs_, -min / neg_vdivs_);
821 else if (pos_vdivs_ > 0)
822 min_value_per_div = max / pos_vdivs_;
824 min_value_per_div = -min / neg_vdivs_;
826 // Find first scale value that is bigger than the value we need
827 for (int i = MinScaleIndex; i < MaxScaleIndex; i++)
828 if (get_resolution(i) > min_value_per_div) {
836 void AnalogSignal::reset_pixel_values()
838 value_at_pixel_pos_.clear();
839 current_pixel_pos_ = -1;
840 prev_value_at_pixel_ = std::numeric_limits<float>::quiet_NaN();
843 void AnalogSignal::process_next_sample_value(float x, float value)
845 // Note: NAN is used to indicate the non-existance of a value at this pixel
847 if (std::isnan(prev_value_at_pixel_)) {
849 min_value_at_pixel_ = value;
850 max_value_at_pixel_ = value;
851 prev_value_at_pixel_ = value;
852 current_pixel_pos_ = x;
854 prev_value_at_pixel_ = std::numeric_limits<float>::quiet_NaN();
857 const int pixel_pos = (int)(x + 0.5);
859 if (pixel_pos > current_pixel_pos_) {
860 if (pixel_pos - current_pixel_pos_ == 1) {
861 if (std::isnan(prev_value_at_pixel_)) {
862 value_at_pixel_pos_.push_back(prev_value_at_pixel_);
864 // Average the min/max range to create one value for the previous pixel
865 const float avg = (min_value_at_pixel_ + max_value_at_pixel_) / 2;
866 value_at_pixel_pos_.push_back(avg);
869 // Interpolate values to create values for the intermediate pixels
870 const float start_value = prev_value_at_pixel_;
871 const float end_value = value;
872 const int steps = fabs(pixel_pos - current_pixel_pos_);
873 const double gradient = (end_value - start_value) / steps;
874 for (int i = 0; i < steps; i++) {
875 if (current_pixel_pos_ + i < 0)
877 value_at_pixel_pos_.push_back(start_value + i * gradient);
881 min_value_at_pixel_ = value;
882 max_value_at_pixel_ = value;
883 prev_value_at_pixel_ = value;
884 current_pixel_pos_ = pixel_pos;
886 // Another sample for the same pixel
887 if (value < min_value_at_pixel_)
888 min_value_at_pixel_ = value;
889 if (value > max_value_at_pixel_)
890 max_value_at_pixel_ = value;
894 void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
896 // Add the standard options
897 Signal::populate_popup_form(parent, form);
899 QFormLayout *const layout = new QFormLayout;
901 // Add div-related settings
902 pvdiv_sb_ = new QSpinBox(parent);
903 pvdiv_sb_->setRange(0, MaximumVDivs);
904 pvdiv_sb_->setValue(pos_vdivs_);
905 connect(pvdiv_sb_, SIGNAL(valueChanged(int)),
906 this, SLOT(on_pos_vdivs_changed(int)));
907 layout->addRow(tr("Number of pos vertical divs"), pvdiv_sb_);
909 nvdiv_sb_ = new QSpinBox(parent);
910 nvdiv_sb_->setRange(0, MaximumVDivs);
911 nvdiv_sb_->setValue(neg_vdivs_);
912 connect(nvdiv_sb_, SIGNAL(valueChanged(int)),
913 this, SLOT(on_neg_vdivs_changed(int)));
914 layout->addRow(tr("Number of neg vertical divs"), nvdiv_sb_);
916 div_height_sb_ = new QSpinBox(parent);
917 div_height_sb_->setRange(20, 1000);
918 div_height_sb_->setSingleStep(5);
919 div_height_sb_->setSuffix(tr(" pixels"));
920 div_height_sb_->setValue(div_height_);
921 connect(div_height_sb_, SIGNAL(valueChanged(int)),
922 this, SLOT(on_div_height_changed(int)));
923 layout->addRow(tr("Div height"), div_height_sb_);
925 // Add the vertical resolution
926 resolution_cb_ = new QComboBox(parent);
928 for (int i = MinScaleIndex; i < MaxScaleIndex; i++) {
929 const QString label = QString("%1").arg(get_resolution(i));
930 resolution_cb_->insertItem(0, label, QVariant(i));
933 int cur_idx = resolution_cb_->findData(QVariant(scale_index_));
934 resolution_cb_->setCurrentIndex(cur_idx);
936 connect(resolution_cb_, SIGNAL(currentIndexChanged(int)),
937 this, SLOT(on_resolution_changed(int)));
939 QGridLayout *const vdiv_layout = new QGridLayout;
940 QLabel *const vdiv_unit = new QLabel(tr("V/div"));
941 vdiv_layout->addWidget(resolution_cb_, 0, 0);
942 vdiv_layout->addWidget(vdiv_unit, 0, 1);
944 layout->addRow(tr("Vertical resolution"), vdiv_layout);
946 // Add the autoranging checkbox
947 QCheckBox* autoranging_cb = new QCheckBox();
948 autoranging_cb->setCheckState(autoranging_ ? Qt::Checked : Qt::Unchecked);
950 connect(autoranging_cb, SIGNAL(stateChanged(int)),
951 this, SLOT(on_autoranging_changed(int)));
953 layout->addRow(tr("Autoranging"), autoranging_cb);
955 // Add the conversion type dropdown
956 conversion_cb_ = new QComboBox();
958 conversion_cb_->addItem(tr("none"),
959 SignalBase::NoConversion);
960 conversion_cb_->addItem(tr("to logic via threshold"),
961 SignalBase::A2LConversionByThreshold);
962 conversion_cb_->addItem(tr("to logic via schmitt-trigger"),
963 SignalBase::A2LConversionBySchmittTrigger);
965 cur_idx = conversion_cb_->findData(QVariant(base_->get_conversion_type()));
966 conversion_cb_->setCurrentIndex(cur_idx);
968 layout->addRow(tr("Conversion"), conversion_cb_);
970 connect(conversion_cb_, SIGNAL(currentIndexChanged(int)),
971 this, SLOT(on_conversion_changed(int)));
973 // Add the conversion threshold settings
974 conv_threshold_cb_ = new QComboBox();
975 conv_threshold_cb_->setEditable(true);
977 layout->addRow(tr("Conversion threshold(s)"), conv_threshold_cb_);
979 connect(conv_threshold_cb_, SIGNAL(currentIndexChanged(int)),
980 this, SLOT(on_conv_threshold_changed(int)));
981 connect(conv_threshold_cb_, SIGNAL(editTextChanged(const QString&)),
982 this, SLOT(on_conv_threshold_changed())); // index will be -1
984 // Add the display type dropdown
985 display_type_cb_ = new QComboBox();
987 display_type_cb_->addItem(tr("analog"), DisplayAnalog);
988 display_type_cb_->addItem(tr("converted"), DisplayConverted);
989 display_type_cb_->addItem(tr("analog+converted"), DisplayBoth);
991 cur_idx = display_type_cb_->findData(QVariant(display_type_));
992 display_type_cb_->setCurrentIndex(cur_idx);
994 layout->addRow(tr("Show traces for"), display_type_cb_);
996 connect(display_type_cb_, SIGNAL(currentIndexChanged(int)),
997 this, SLOT(on_display_type_changed(int)));
999 // Update the conversion widget contents and states
1000 update_conversion_widgets();
1002 form->addRow(layout);
1005 void AnalogSignal::hover_point_changed(const QPoint &hp)
1007 Signal::hover_point_changed(hp);
1009 // Note: Even though the view area begins at 0, we exclude 0 because
1010 // that's also the value given when the cursor is over the header to the
1011 // left of the trace paint area
1013 value_at_hover_pos_ = std::numeric_limits<float>::quiet_NaN();
1016 value_at_hover_pos_ = value_at_pixel_pos_.at(hp.x());
1017 } catch (out_of_range&) {
1018 value_at_hover_pos_ = std::numeric_limits<float>::quiet_NaN();
1023 void AnalogSignal::on_min_max_changed(float min, float max)
1029 perform_autoranging(false, false);
1032 void AnalogSignal::on_pos_vdivs_changed(int vdivs)
1034 if (vdivs == pos_vdivs_)
1039 // There has to be at least one div, positive or negative
1040 if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
1043 pvdiv_sb_->setValue(pos_vdivs_);
1047 perform_autoranging(true, true);
1049 // It could be that a positive or negative div was added, so update
1051 pvdiv_sb_->setValue(pos_vdivs_);
1052 nvdiv_sb_->setValue(neg_vdivs_);
1057 // Call order is important, otherwise the lazy event handler won't work
1058 owner_->extents_changed(false, true);
1059 owner_->row_item_appearance_changed(false, true);
1063 void AnalogSignal::on_neg_vdivs_changed(int vdivs)
1065 if (vdivs == neg_vdivs_)
1070 // There has to be at least one div, positive or negative
1071 if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
1074 pvdiv_sb_->setValue(pos_vdivs_);
1078 perform_autoranging(true, true);
1080 // It could be that a positive or negative div was added, so update
1082 pvdiv_sb_->setValue(pos_vdivs_);
1083 nvdiv_sb_->setValue(neg_vdivs_);
1088 // Call order is important, otherwise the lazy event handler won't work
1089 owner_->extents_changed(false, true);
1090 owner_->row_item_appearance_changed(false, true);
1094 void AnalogSignal::on_div_height_changed(int height)
1096 div_height_ = height;
1100 // Call order is important, otherwise the lazy event handler won't work
1101 owner_->extents_changed(false, true);
1102 owner_->row_item_appearance_changed(false, true);
1106 void AnalogSignal::on_resolution_changed(int index)
1108 scale_index_ = resolution_cb_->itemData(index).toInt();
1112 owner_->row_item_appearance_changed(false, true);
1115 void AnalogSignal::on_autoranging_changed(int state)
1117 autoranging_ = (state == Qt::Checked);
1120 perform_autoranging(false, true);
1123 // Call order is important, otherwise the lazy event handler won't work
1124 owner_->extents_changed(false, true);
1125 owner_->row_item_appearance_changed(false, true);
1129 void AnalogSignal::on_conversion_changed(int index)
1131 SignalBase::ConversionType old_conv_type = base_->get_conversion_type();
1133 SignalBase::ConversionType conv_type =
1134 (SignalBase::ConversionType)(conversion_cb_->itemData(index).toInt());
1136 if (conv_type != old_conv_type) {
1137 base_->set_conversion_type(conv_type);
1138 update_conversion_widgets();
1141 owner_->row_item_appearance_changed(false, true);
1145 void AnalogSignal::on_conv_threshold_changed(int index)
1147 SignalBase::ConversionType conv_type = base_->get_conversion_type();
1149 // Note: index is set to -1 if the text in the combo box matches none of
1150 // the entries in the combo box
1152 if ((index == -1) && (conv_threshold_cb_->currentText().length() == 0))
1155 // The combo box entry with the custom value has user_data set to -1
1156 const int user_data = conv_threshold_cb_->findText(
1157 conv_threshold_cb_->currentText());
1159 const bool use_custom_thr = (index == -1) || (user_data == -1);
1161 if (conv_type == SignalBase::A2LConversionByThreshold && use_custom_thr) {
1162 // Not one of the preset values, try to parse the combo box text
1163 // Note: Regex loosely based on
1164 // https://txt2re.com/index-c++.php3?s=0.1V&1&-13
1165 QString re1 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1166 QString re2 = "([a-zA-Z]*)"; // SI unit
1167 QRegExp regex(re1 + re2);
1169 const QString text = conv_threshold_cb_->currentText();
1170 if (!regex.exactMatch(text))
1171 return; // String doesn't match the regex
1173 QStringList tokens = regex.capturedTexts();
1175 // For now, we simply assume that the unit is volt without modifiers
1176 const double thr = tokens.at(1).toDouble();
1178 // Only restart the conversion if the threshold was updated.
1179 // We're starting a delayed conversion because the user may still be
1180 // typing and the UI would lag if we kept on restarting it immediately
1181 if (base_->set_conversion_option("threshold_value", thr))
1182 base_->start_conversion(true);
1185 if (conv_type == SignalBase::A2LConversionBySchmittTrigger && use_custom_thr) {
1186 // Not one of the preset values, try to parse the combo box text
1187 // Note: Regex loosely based on
1188 // https://txt2re.com/index-c++.php3?s=0.1V/0.2V&2&14&-22&3&15
1189 QString re1 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1190 QString re2 = "([a-zA-Z]*)"; // SI unit
1191 QString re3 = "\\/"; // Forward slash, not captured
1192 QString re4 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1193 QString re5 = "([a-zA-Z]*)"; // SI unit
1194 QRegExp regex(re1 + re2 + re3 + re4 + re5);
1196 const QString text = conv_threshold_cb_->currentText();
1197 if (!regex.exactMatch(text))
1198 return; // String doesn't match the regex
1200 QStringList tokens = regex.capturedTexts();
1202 // For now, we simply assume that the unit is volt without modifiers
1203 const double low_thr = tokens.at(1).toDouble();
1204 const double high_thr = tokens.at(3).toDouble();
1206 // Only restart the conversion if one of the options was updated.
1207 // We're starting a delayed conversion because the user may still be
1208 // typing and the UI would lag if we kept on restarting it immediately
1209 bool o1 = base_->set_conversion_option("threshold_value_low", low_thr);
1210 bool o2 = base_->set_conversion_option("threshold_value_high", high_thr);
1212 base_->start_conversion(true); // Start delayed conversion
1215 base_->set_conversion_preset((SignalBase::ConversionPreset)index);
1217 // Immediately start the conversion if we're not using custom values
1218 // (i.e. we're using one of the presets)
1219 if (!use_custom_thr)
1220 base_->start_conversion();
1223 void AnalogSignal::on_delayed_conversion_starter()
1225 base_->start_conversion();
1228 void AnalogSignal::on_display_type_changed(int index)
1230 display_type_ = (DisplayType)(display_type_cb_->itemData(index).toInt());
1233 owner_->row_item_appearance_changed(false, true);
1236 void AnalogSignal::on_settingViewConversionThresholdDispMode_changed(const QVariant new_value)
1238 conversion_threshold_disp_mode_ = new_value.toInt();
1241 owner_->row_item_appearance_changed(false, true);
1244 } // namespace trace
1245 } // namespace views