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>
58 using std::numeric_limits;
59 using std::out_of_range;
61 using std::shared_ptr;
64 using pv::data::SignalBase;
65 using pv::util::SIPrefix;
71 const QColor AnalogSignal::SignalColors[4] = {
72 QColor(0xC4, 0xA0, 0x00), // Yellow
73 QColor(0x87, 0x20, 0x7A), // Magenta
74 QColor(0x20, 0x4A, 0x87), // Blue
75 QColor(0x4E, 0x9A, 0x06) // Green
78 const QPen AnalogSignal::AxisPen(QColor(0, 0, 0, 30 * 256 / 100), 2);
79 const QColor AnalogSignal::GridMajorColor = QColor(0, 0, 0, 40 * 256 / 100);
80 const QColor AnalogSignal::GridMinorColor = QColor(0, 0, 0, 20 * 256 / 100);
82 const QColor AnalogSignal::SamplingPointColor(0x77, 0x77, 0x77);
83 const QColor AnalogSignal::SamplingPointColorLo = QColor(200, 0, 0, 80 * 256 / 100);
84 const QColor AnalogSignal::SamplingPointColorNe = QColor(0, 0, 0, 80 * 256 / 100);
85 const QColor AnalogSignal::SamplingPointColorHi = QColor(0, 200, 0, 80 * 256 / 100);
87 const QColor AnalogSignal::ThresholdColor = QColor(0, 0, 0, 30 * 256 / 100);
88 const QColor AnalogSignal::ThresholdColorLo = QColor(255, 0, 0, 8 * 256 / 100);
89 const QColor AnalogSignal::ThresholdColorNe = QColor(0, 0, 0, 10 * 256 / 100);
90 const QColor AnalogSignal::ThresholdColorHi = QColor(0, 255, 0, 8 * 256 / 100);
92 const int64_t AnalogSignal::TracePaintBlockSize = 1024 * 1024; // 4 MiB (due to float)
93 const float AnalogSignal::EnvelopeThreshold = 64.0f;
95 const int AnalogSignal::MaximumVDivs = 10;
96 const int AnalogSignal::MinScaleIndex = -6;
97 const int AnalogSignal::MaxScaleIndex = 7;
99 const int AnalogSignal::InfoTextMarginRight = 20;
100 const int AnalogSignal::InfoTextMarginBottom = 5;
102 AnalogSignal::AnalogSignal(
103 pv::Session &session,
104 shared_ptr<data::SignalBase> base) :
105 Signal(session, base),
106 scale_index_(4), // 20 per div
107 scale_index_drag_offset_(0),
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 AnalogSignal::~AnalogSignal()
134 GlobalSettings::remove_change_handler(this);
137 shared_ptr<pv::data::SignalData> AnalogSignal::data() const
139 return base_->analog_data();
142 void AnalogSignal::save_settings(QSettings &settings) const
144 settings.setValue("pos_vdivs", pos_vdivs_);
145 settings.setValue("neg_vdivs", neg_vdivs_);
146 settings.setValue("scale_index", scale_index_);
147 settings.setValue("display_type", display_type_);
148 settings.setValue("autoranging", autoranging_);
149 settings.setValue("div_height", div_height_);
152 void AnalogSignal::restore_settings(QSettings &settings)
154 if (settings.contains("pos_vdivs"))
155 pos_vdivs_ = settings.value("pos_vdivs").toInt();
157 if (settings.contains("neg_vdivs"))
158 neg_vdivs_ = settings.value("neg_vdivs").toInt();
160 if (settings.contains("scale_index")) {
161 scale_index_ = settings.value("scale_index").toInt();
165 if (settings.contains("display_type"))
166 display_type_ = (DisplayType)(settings.value("display_type").toInt());
168 if (settings.contains("autoranging"))
169 autoranging_ = settings.value("autoranging").toBool();
171 if (settings.contains("div_height")) {
172 const int old_height = div_height_;
173 div_height_ = settings.value("div_height").toInt();
175 if ((div_height_ != old_height) && owner_) {
176 // Call order is important, otherwise the lazy event handler won't work
177 owner_->extents_changed(false, true);
178 owner_->row_item_appearance_changed(false, true);
183 pair<int, int> AnalogSignal::v_extents() const
185 const int ph = pos_vdivs_ * div_height_;
186 const int nh = neg_vdivs_ * div_height_;
187 return make_pair(-ph, nh);
190 int AnalogSignal::scale_handle_offset() const
192 const int h = (pos_vdivs_ + neg_vdivs_) * div_height_;
194 return ((scale_index_drag_offset_ - scale_index_) * h / 4) - h / 2;
197 void AnalogSignal::scale_handle_dragged(int offset)
199 const int h = (pos_vdivs_ + neg_vdivs_) * div_height_;
201 scale_index_ = scale_index_drag_offset_ - (offset + h / 2) / (h / 4);
206 void AnalogSignal::scale_handle_drag_release()
208 scale_index_drag_offset_ = scale_index_;
212 void AnalogSignal::on_setting_changed(const QString &key, const QVariant &value)
214 Signal::on_setting_changed(key, value);
216 if (key == GlobalSettings::Key_View_ConversionThresholdDispMode)
217 on_settingViewConversionThresholdDispMode_changed(value);
220 void AnalogSignal::paint_back(QPainter &p, ViewItemPaintParams &pp)
222 if (!base_->enabled())
226 conversion_threshold_disp_mode_ == GlobalSettings::ConvThrDispMode_Background;
228 const vector<double> thresholds = base_->get_conversion_thresholds();
230 // Only display thresholds if we have some and we show analog samples
231 if ((thresholds.size() > 0) && paint_thr_bg &&
232 ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth))) {
234 const int visual_y = get_visual_y();
235 const pair<int, int> extents = v_extents();
236 const int top = visual_y + extents.first;
237 const int btm = visual_y + extents.second;
239 // Draw high/neutral/low areas
240 if (thresholds.size() == 2) {
241 int thr_lo = visual_y - thresholds[0] * scale_;
242 int thr_hi = visual_y - thresholds[1] * scale_;
243 thr_lo = min(max(thr_lo, top), btm);
244 thr_hi = min(max(thr_hi, top), btm);
246 p.fillRect(QRectF(pp.left(), top, pp.width(), thr_hi - top),
247 QBrush(ThresholdColorHi));
248 p.fillRect(QRectF(pp.left(), thr_hi, pp.width(), thr_lo - thr_hi),
249 QBrush(ThresholdColorNe));
250 p.fillRect(QRectF(pp.left(), thr_lo, pp.width(), btm - thr_lo),
251 QBrush(ThresholdColorLo));
253 int thr = visual_y - thresholds[0] * scale_;
254 thr = min(max(thr, top), btm);
256 p.fillRect(QRectF(pp.left(), top, pp.width(), thr - top),
257 QBrush(ThresholdColorHi));
258 p.fillRect(QRectF(pp.left(), thr, pp.width(), btm - thr),
259 QBrush(ThresholdColorLo));
262 paint_axis(p, pp, get_visual_y());
264 Trace::paint_back(p, pp);
265 paint_axis(p, pp, get_visual_y());
269 void AnalogSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
271 assert(base_->analog_data());
274 const int y = get_visual_y();
276 if (!base_->enabled())
279 if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
280 paint_grid(p, y, pp.left(), pp.right());
282 shared_ptr<pv::data::AnalogSegment> segment = get_analog_segment_to_paint();
283 if (!segment || (segment->get_sample_count() == 0))
286 const double pixels_offset = pp.pixels_offset();
287 const double samplerate = max(1.0, segment->samplerate());
288 const pv::util::Timestamp& start_time = segment->start_time();
289 const int64_t last_sample = (int64_t)segment->get_sample_count() - 1;
290 const double samples_per_pixel = samplerate * pp.scale();
291 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
292 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
294 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
295 (int64_t)0), last_sample);
296 const int64_t end_sample = min(max((ceil(end) + 1).convert_to<int64_t>(),
297 (int64_t)0), last_sample);
299 if (samples_per_pixel < EnvelopeThreshold)
300 paint_trace(p, segment, y, pp.left(), start_sample, end_sample,
301 pixels_offset, samples_per_pixel);
303 paint_envelope(p, segment, y, pp.left(), start_sample, end_sample,
304 pixels_offset, samples_per_pixel);
307 if ((display_type_ == DisplayConverted) || (display_type_ == DisplayBoth))
308 paint_logic_mid(p, pp);
311 void AnalogSignal::paint_fore(QPainter &p, ViewItemPaintParams &pp)
316 if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
317 const int y = get_visual_y();
321 // Show the info section on the right side of the trace, including
322 // the value at the hover point when the hover marker is enabled
323 // and we have corresponding data available
324 if (show_hover_marker_ && !isnan(value_at_hover_pos_)) {
325 infotext = QString("[%1] %2 V/div")
326 .arg(format_value_si(value_at_hover_pos_, SIPrefix::unspecified, 0, "V", false))
329 infotext = QString("%1 V/div").arg(resolution_);
331 p.setPen(base_->color());
332 p.setFont(QApplication::font());
334 const QRectF bounding_rect = QRectF(pp.left(),
335 y + v_extents().first,
336 pp.width() - InfoTextMarginRight,
337 v_extents().second - v_extents().first - InfoTextMarginBottom);
339 p.drawText(bounding_rect, Qt::AlignRight | Qt::AlignBottom, infotext);
342 if (show_hover_marker_)
343 paint_hover_marker(p);
346 void AnalogSignal::paint_grid(QPainter &p, int y, int left, int right)
348 p.setRenderHint(QPainter::Antialiasing, false);
350 GlobalSettings settings;
351 const bool show_analog_minor_grid =
352 settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool();
354 if (pos_vdivs_ > 0) {
355 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
356 for (int i = 1; i <= pos_vdivs_; i++) {
357 const float dy = i * div_height_;
358 p.drawLine(QLineF(left, y - dy, right, y - dy));
362 if ((pos_vdivs_ > 0) && show_analog_minor_grid) {
363 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
364 for (int i = 0; i < pos_vdivs_; i++) {
365 const float dy = i * div_height_;
366 const float dy25 = dy + (0.25 * div_height_);
367 const float dy50 = dy + (0.50 * div_height_);
368 const float dy75 = dy + (0.75 * div_height_);
369 p.drawLine(QLineF(left, y - dy25, right, y - dy25));
370 p.drawLine(QLineF(left, y - dy50, right, y - dy50));
371 p.drawLine(QLineF(left, y - dy75, right, y - dy75));
375 if (neg_vdivs_ > 0) {
376 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
377 for (int i = 1; i <= neg_vdivs_; i++) {
378 const float dy = i * div_height_;
379 p.drawLine(QLineF(left, y + dy, right, y + dy));
383 if ((pos_vdivs_ > 0) && show_analog_minor_grid) {
384 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
385 for (int i = 0; i < neg_vdivs_; i++) {
386 const float dy = i * div_height_;
387 const float dy25 = dy + (0.25 * div_height_);
388 const float dy50 = dy + (0.50 * div_height_);
389 const float dy75 = dy + (0.75 * div_height_);
390 p.drawLine(QLineF(left, y + dy25, right, y + dy25));
391 p.drawLine(QLineF(left, y + dy50, right, y + dy50));
392 p.drawLine(QLineF(left, y + dy75, right, y + dy75));
396 p.setRenderHint(QPainter::Antialiasing, true);
399 void AnalogSignal::paint_trace(QPainter &p,
400 const shared_ptr<pv::data::AnalogSegment> &segment,
401 int y, int left, const int64_t start, const int64_t end,
402 const double pixels_offset, const double samples_per_pixel)
407 bool paint_thr_dots =
408 (base_->get_conversion_type() != data::SignalBase::NoConversion) &&
409 (conversion_threshold_disp_mode_ == GlobalSettings::ConvThrDispMode_Dots);
411 vector<double> thresholds;
413 thresholds = base_->get_conversion_thresholds();
415 // Calculate and paint the sampling points if enabled and useful
416 GlobalSettings settings;
417 const bool show_sampling_points =
418 (settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() ||
419 paint_thr_dots) && (samples_per_pixel < 0.25);
421 p.setPen(base_->color());
423 const int64_t points_count = end - start + 1;
425 QPointF *points = new QPointF[points_count];
426 QPointF *point = points;
428 vector<QRectF> sampling_points[3];
430 int64_t sample_count = min(points_count, TracePaintBlockSize);
431 int64_t block_sample = 0;
432 float *sample_block = new float[TracePaintBlockSize];
433 segment->get_samples(start, start + sample_count, sample_block);
435 if (show_hover_marker_)
436 reset_pixel_values();
439 for (int64_t sample = start; sample <= end; sample++, block_sample++) {
441 // Fetch next block of samples if we finished the current one
442 if (block_sample == TracePaintBlockSize) {
444 sample_count = min(points_count - sample, TracePaintBlockSize);
445 segment->get_samples(sample, sample + sample_count, sample_block);
448 const float abs_x = sample / samples_per_pixel - pixels_offset;
449 const float x = left + abs_x;
451 *point++ = QPointF(x, y - sample_block[block_sample] * scale_);
453 // Generate the pixel<->value lookup table for the mouse hover
454 if (show_hover_marker_)
455 process_next_sample_value(abs_x, sample_block[block_sample]);
457 // Create the sampling points if needed
458 if (show_sampling_points) {
459 int idx = 0; // Neutral
461 if (paint_thr_dots) {
462 if (thresholds.size() == 1)
463 idx = (sample_block[block_sample] >= thresholds[0]) ? 2 : 1;
464 else if (thresholds.size() == 2) {
465 if (sample_block[block_sample] > thresholds[1])
467 else if (sample_block[block_sample] < thresholds[0])
472 sampling_points[idx].emplace_back(x - (w / 2), y - sample_block[block_sample] * scale_ - (w / 2), w, w);
475 delete[] sample_block;
477 p.drawPolyline(points, points_count);
479 if (show_sampling_points) {
480 if (paint_thr_dots) {
481 p.setPen(SamplingPointColorNe);
482 p.drawRects(sampling_points[0].data(), sampling_points[0].size());
483 p.setPen(SamplingPointColorLo);
484 p.drawRects(sampling_points[1].data(), sampling_points[1].size());
485 p.setPen(SamplingPointColorHi);
486 p.drawRects(sampling_points[2].data(), sampling_points[2].size());
488 p.setPen(SamplingPointColor);
489 p.drawRects(sampling_points[0].data(), sampling_points[0].size());
496 void AnalogSignal::paint_envelope(QPainter &p,
497 const shared_ptr<pv::data::AnalogSegment> &segment,
498 int y, int left, const int64_t start, const int64_t end,
499 const double pixels_offset, const double samples_per_pixel)
501 using pv::data::AnalogSegment;
503 // Note: Envelope painting currently doesn't generate a pixel<->value lookup table
504 if (show_hover_marker_)
505 reset_pixel_values();
507 AnalogSegment::EnvelopeSection e;
508 segment->get_envelope_section(e, start, end, samples_per_pixel);
513 p.setPen(QPen(Qt::NoPen));
514 p.setBrush(base_->color());
516 QRectF *const rects = new QRectF[e.length];
517 QRectF *rect = rects;
519 for (uint64_t sample = 0; sample < e.length - 1; sample++) {
520 const float x = ((e.scale * sample + e.start) /
521 samples_per_pixel - pixels_offset) + left;
523 const AnalogSegment::EnvelopeSample *const s = e.samples + sample;
525 // We overlap this sample with the next so that vertical
526 // gaps do not appear during steep rising or falling edges
527 const float b = y - max(s->max, (s + 1)->min) * scale_;
528 const float t = y - min(s->min, (s + 1)->max) * scale_;
531 if (h >= 0.0f && h <= 1.0f)
533 if (h <= 0.0f && h >= -1.0f)
536 *rect++ = QRectF(x, t, 1.0f, h);
539 p.drawRects(rects, e.length);
545 void AnalogSignal::paint_logic_mid(QPainter &p, ViewItemPaintParams &pp)
549 vector< pair<int64_t, bool> > edges;
553 const int y = get_visual_y();
555 if (!base_->enabled() || !base_->logic_data())
558 const int signal_margin =
559 QFontMetrics(QApplication::font()).height() / 2;
561 const int ph = min(pos_vdivs_, 1) * div_height_;
562 const int nh = min(neg_vdivs_, 1) * div_height_;
563 const float high_offset = y - ph + signal_margin + 0.5f;
564 const float low_offset = y + nh - signal_margin - 0.5f;
566 shared_ptr<pv::data::LogicSegment> segment = get_logic_segment_to_paint();
567 if (!segment || (segment->get_sample_count() == 0))
570 double samplerate = segment->samplerate();
572 // Show sample rate as 1Hz when it is unknown
573 if (samplerate == 0.0)
576 const double pixels_offset = pp.pixels_offset();
577 const pv::util::Timestamp& start_time = segment->start_time();
578 const int64_t last_sample = (int64_t)segment->get_sample_count() - 1;
579 const double samples_per_pixel = samplerate * pp.scale();
580 const double pixels_per_sample = 1 / samples_per_pixel;
581 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
582 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
584 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
585 (int64_t)0), last_sample);
586 const uint64_t end_sample = min(max(ceil(end).convert_to<int64_t>(),
587 (int64_t)0), last_sample);
589 segment->get_subsampled_edges(edges, start_sample, end_sample,
590 samples_per_pixel / LogicSignal::Oversampling, 0);
591 assert(edges.size() >= 2);
593 // Check whether we need to paint the sampling points
594 GlobalSettings settings;
595 const bool show_sampling_points =
596 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() &&
597 (samples_per_pixel < 0.25);
599 vector<QRectF> sampling_points;
600 float sampling_point_x = 0.0f;
601 int64_t sampling_point_sample = start_sample;
604 if (show_sampling_points) {
605 sampling_points.reserve(end_sample - start_sample + 1);
606 sampling_point_x = (edges.cbegin()->first / samples_per_pixel - pixels_offset) + pp.left();
610 const unsigned int edge_count = edges.size() - 2;
611 QLineF *const edge_lines = new QLineF[edge_count];
614 for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
615 const float x = ((*i).first / samples_per_pixel -
616 pixels_offset) + pp.left();
617 *line++ = QLineF(x, high_offset, x, low_offset);
619 if (show_sampling_points)
620 while (sampling_point_sample < (*i).first) {
621 const float y = (*i).second ? low_offset : high_offset;
622 sampling_points.emplace_back(
623 QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
624 sampling_point_sample++;
625 sampling_point_x += pixels_per_sample;
629 // Calculate the sample points from the last edge to the end of the trace
630 if (show_sampling_points)
631 while ((uint64_t)sampling_point_sample <= end_sample) {
632 // Signal changed after the last edge, so the level is inverted
633 const float y = (edges.cend() - 1)->second ? high_offset : low_offset;
634 sampling_points.emplace_back(
635 QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
636 sampling_point_sample++;
637 sampling_point_x += pixels_per_sample;
640 p.setPen(LogicSignal::EdgeColor);
641 p.drawLines(edge_lines, edge_count);
645 const unsigned int max_cap_line_count = edges.size();
646 QLineF *const cap_lines = new QLineF[max_cap_line_count];
648 p.setPen(LogicSignal::HighColor);
649 paint_logic_caps(p, cap_lines, edges, true, samples_per_pixel,
650 pixels_offset, pp.left(), high_offset);
651 p.setPen(LogicSignal::LowColor);
652 paint_logic_caps(p, cap_lines, edges, false, samples_per_pixel,
653 pixels_offset, pp.left(), low_offset);
657 // Paint the sampling points
658 if (show_sampling_points) {
659 p.setPen(SamplingPointColor);
660 p.drawRects(sampling_points.data(), sampling_points.size());
664 void AnalogSignal::paint_logic_caps(QPainter &p, QLineF *const lines,
665 vector< pair<int64_t, bool> > &edges, bool level,
666 double samples_per_pixel, double pixels_offset, float x_offset,
669 QLineF *line = lines;
671 for (auto i = edges.begin(); i != (edges.end() - 1); i++)
672 if ((*i).second == level) {
674 ((*i).first / samples_per_pixel -
675 pixels_offset) + x_offset, y_offset,
676 ((*(i+1)).first / samples_per_pixel -
677 pixels_offset) + x_offset, y_offset);
680 p.drawLines(lines, line - lines);
683 shared_ptr<pv::data::AnalogSegment> AnalogSignal::get_analog_segment_to_paint() const
685 shared_ptr<pv::data::AnalogSegment> segment;
687 const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
688 base_->analog_data()->analog_segments();
690 if (!segments.empty()) {
691 if (segment_display_mode_ == ShowLastSegmentOnly)
692 segment = segments.back();
694 if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
695 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
697 segment = segments.at(current_segment_);
698 } catch (out_of_range&) {
699 qDebug() << "Current analog segment out of range for signal" << base_->name() << ":" << current_segment_;
707 shared_ptr<pv::data::LogicSegment> AnalogSignal::get_logic_segment_to_paint() const
709 shared_ptr<pv::data::LogicSegment> segment;
711 const deque< shared_ptr<pv::data::LogicSegment> > &segments =
712 base_->logic_data()->logic_segments();
714 if (!segments.empty()) {
715 if (segment_display_mode_ == ShowLastSegmentOnly)
716 segment = segments.back();
718 if ((segment_display_mode_ == ShowSingleSegmentOnly) ||
719 (segment_display_mode_ == ShowLastCompleteSegmentOnly)) {
721 segment = segments.at(current_segment_);
722 } catch (out_of_range&) {
723 qDebug() << "Current logic segment out of range for signal" << base_->name() << ":" << current_segment_;
731 float AnalogSignal::get_resolution(int scale_index)
733 const float seq[] = {1.0f, 2.0f, 5.0f};
735 const int offset = numeric_limits<int>::max() / (2 * countof(seq));
736 const div_t d = div((int)(scale_index + countof(seq) * offset),
739 return powf(10.0f, d.quot - offset) * seq[d.rem];
742 void AnalogSignal::update_scale()
744 resolution_ = get_resolution(scale_index_);
745 scale_ = div_height_ / resolution_;
748 void AnalogSignal::update_conversion_widgets()
750 SignalBase::ConversionType conv_type = base_->get_conversion_type();
752 // Enable or disable widgets depending on conversion state
753 conv_threshold_cb_->setEnabled(conv_type != SignalBase::NoConversion);
754 display_type_cb_->setEnabled(conv_type != SignalBase::NoConversion);
756 conv_threshold_cb_->clear();
758 vector < pair<QString, int> > presets = base_->get_conversion_presets();
760 // Prevent the combo box from firing the "edit text changed" signal
761 // as that would involuntarily select the first entry
762 conv_threshold_cb_->blockSignals(true);
764 // Set available options depending on chosen conversion
765 for (pair<QString, int> preset : presets)
766 conv_threshold_cb_->addItem(preset.first, preset.second);
768 map < QString, QVariant > options = base_->get_conversion_options();
770 if (conv_type == SignalBase::A2LConversionByThreshold) {
771 const vector<double> thresholds = base_->get_conversion_thresholds(
772 SignalBase::A2LConversionByThreshold, true);
773 conv_threshold_cb_->addItem(
774 QString("%1V").arg(QString::number(thresholds[0], 'f', 1)), -1);
777 if (conv_type == SignalBase::A2LConversionBySchmittTrigger) {
778 const vector<double> thresholds = base_->get_conversion_thresholds(
779 SignalBase::A2LConversionBySchmittTrigger, true);
780 conv_threshold_cb_->addItem(QString("%1V/%2V").arg(
781 QString::number(thresholds[0], 'f', 1),
782 QString::number(thresholds[1], 'f', 1)), -1);
785 int preset_id = base_->get_current_conversion_preset();
786 conv_threshold_cb_->setCurrentIndex(
787 conv_threshold_cb_->findData(preset_id));
789 conv_threshold_cb_->blockSignals(false);
792 void AnalogSignal::perform_autoranging(bool keep_divs, bool force_update)
794 const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
795 base_->analog_data()->analog_segments();
797 if (segments.empty())
800 static double prev_min = 0, prev_max = 0;
801 double min = 0, max = 0;
803 for (shared_ptr<pv::data::AnalogSegment> segment : segments) {
804 pair<double, double> mm = segment->get_min_max();
805 min = std::min(min, mm.first);
806 max = std::max(max, mm.second);
809 if ((min == prev_min) && (max == prev_max) && !force_update)
815 // If we're allowed to alter the div assignment...
817 // Use all divs for the positive range if there are no negative values
818 if ((min == 0) && (neg_vdivs_ > 0)) {
819 pos_vdivs_ += neg_vdivs_;
823 // Split up the divs if there are negative values but no negative divs
824 if ((min < 0) && (neg_vdivs_ == 0)) {
825 neg_vdivs_ = pos_vdivs_ / 2;
826 pos_vdivs_ -= neg_vdivs_;
830 // If there is still no positive div when we need it, add one
831 // (this can happen when pos_vdivs==neg_vdivs==0)
832 if ((max > 0) && (pos_vdivs_ == 0)) {
834 owner_->extents_changed(false, true);
837 // If there is still no negative div when we need it, add one
838 // (this can happen when pos_vdivs was 0 or 1 when trying to split)
839 if ((min < 0) && (neg_vdivs_ == 0)) {
841 owner_->extents_changed(false, true);
844 double min_value_per_div;
845 if ((pos_vdivs_ > 0) && (neg_vdivs_ > 0))
846 min_value_per_div = std::max(max / pos_vdivs_, -min / neg_vdivs_);
847 else if (pos_vdivs_ > 0)
848 min_value_per_div = max / pos_vdivs_;
850 min_value_per_div = -min / neg_vdivs_;
852 // Find first scale value that is bigger than the value we need
853 for (int i = MinScaleIndex; i < MaxScaleIndex; i++)
854 if (get_resolution(i) > min_value_per_div) {
862 void AnalogSignal::reset_pixel_values()
864 value_at_pixel_pos_.clear();
865 current_pixel_pos_ = -1;
866 prev_value_at_pixel_ = std::numeric_limits<float>::quiet_NaN();
869 void AnalogSignal::process_next_sample_value(float x, float value)
871 // Note: NAN is used to indicate the non-existance of a value at this pixel
873 if (isnan(prev_value_at_pixel_)) {
875 min_value_at_pixel_ = value;
876 max_value_at_pixel_ = value;
877 prev_value_at_pixel_ = value;
878 current_pixel_pos_ = x;
880 prev_value_at_pixel_ = std::numeric_limits<float>::quiet_NaN();
883 const int pixel_pos = (int)(x + 0.5);
885 if (pixel_pos > current_pixel_pos_) {
886 if (pixel_pos - current_pixel_pos_ == 1) {
887 if (isnan(prev_value_at_pixel_)) {
888 value_at_pixel_pos_.push_back(prev_value_at_pixel_);
890 // Average the min/max range to create one value for the previous pixel
891 const float avg = (min_value_at_pixel_ + max_value_at_pixel_) / 2;
892 value_at_pixel_pos_.push_back(avg);
895 // Interpolate values to create values for the intermediate pixels
896 const float start_value = prev_value_at_pixel_;
897 const float end_value = value;
898 const int steps = fabs(pixel_pos - current_pixel_pos_);
899 const double gradient = (end_value - start_value) / steps;
900 for (int i = 0; i < steps; i++) {
901 if (current_pixel_pos_ + i < 0)
903 value_at_pixel_pos_.push_back(start_value + i * gradient);
907 min_value_at_pixel_ = value;
908 max_value_at_pixel_ = value;
909 prev_value_at_pixel_ = value;
910 current_pixel_pos_ = pixel_pos;
912 // Another sample for the same pixel
913 if (value < min_value_at_pixel_)
914 min_value_at_pixel_ = value;
915 if (value > max_value_at_pixel_)
916 max_value_at_pixel_ = value;
920 void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
922 // Add the standard options
923 Signal::populate_popup_form(parent, form);
925 QFormLayout *const layout = new QFormLayout;
927 // Add div-related settings
928 pvdiv_sb_ = new QSpinBox(parent);
929 pvdiv_sb_->setRange(0, MaximumVDivs);
930 pvdiv_sb_->setValue(pos_vdivs_);
931 connect(pvdiv_sb_, SIGNAL(valueChanged(int)),
932 this, SLOT(on_pos_vdivs_changed(int)));
933 layout->addRow(tr("Number of pos vertical divs"), pvdiv_sb_);
935 nvdiv_sb_ = new QSpinBox(parent);
936 nvdiv_sb_->setRange(0, MaximumVDivs);
937 nvdiv_sb_->setValue(neg_vdivs_);
938 connect(nvdiv_sb_, SIGNAL(valueChanged(int)),
939 this, SLOT(on_neg_vdivs_changed(int)));
940 layout->addRow(tr("Number of neg vertical divs"), nvdiv_sb_);
942 div_height_sb_ = new QSpinBox(parent);
943 div_height_sb_->setRange(20, 1000);
944 div_height_sb_->setSingleStep(5);
945 div_height_sb_->setSuffix(tr(" pixels"));
946 div_height_sb_->setValue(div_height_);
947 connect(div_height_sb_, SIGNAL(valueChanged(int)),
948 this, SLOT(on_div_height_changed(int)));
949 layout->addRow(tr("Div height"), div_height_sb_);
951 // Add the vertical resolution
952 resolution_cb_ = new QComboBox(parent);
954 for (int i = MinScaleIndex; i < MaxScaleIndex; i++) {
955 const QString label = QString("%1").arg(get_resolution(i));
956 resolution_cb_->insertItem(0, label, QVariant(i));
959 int cur_idx = resolution_cb_->findData(QVariant(scale_index_));
960 resolution_cb_->setCurrentIndex(cur_idx);
962 connect(resolution_cb_, SIGNAL(currentIndexChanged(int)),
963 this, SLOT(on_resolution_changed(int)));
965 QGridLayout *const vdiv_layout = new QGridLayout;
966 QLabel *const vdiv_unit = new QLabel(tr("V/div"));
967 vdiv_layout->addWidget(resolution_cb_, 0, 0);
968 vdiv_layout->addWidget(vdiv_unit, 0, 1);
970 layout->addRow(tr("Vertical resolution"), vdiv_layout);
972 // Add the autoranging checkbox
973 QCheckBox* autoranging_cb = new QCheckBox();
974 autoranging_cb->setCheckState(autoranging_ ? Qt::Checked : Qt::Unchecked);
976 connect(autoranging_cb, SIGNAL(stateChanged(int)),
977 this, SLOT(on_autoranging_changed(int)));
979 layout->addRow(tr("Autoranging"), autoranging_cb);
981 // Add the conversion type dropdown
982 conversion_cb_ = new QComboBox();
984 conversion_cb_->addItem(tr("none"),
985 SignalBase::NoConversion);
986 conversion_cb_->addItem(tr("to logic via threshold"),
987 SignalBase::A2LConversionByThreshold);
988 conversion_cb_->addItem(tr("to logic via schmitt-trigger"),
989 SignalBase::A2LConversionBySchmittTrigger);
991 cur_idx = conversion_cb_->findData(QVariant(base_->get_conversion_type()));
992 conversion_cb_->setCurrentIndex(cur_idx);
994 layout->addRow(tr("Conversion"), conversion_cb_);
996 connect(conversion_cb_, SIGNAL(currentIndexChanged(int)),
997 this, SLOT(on_conversion_changed(int)));
999 // Add the conversion threshold settings
1000 conv_threshold_cb_ = new QComboBox();
1001 conv_threshold_cb_->setEditable(true);
1003 layout->addRow(tr("Conversion threshold(s)"), conv_threshold_cb_);
1005 connect(conv_threshold_cb_, SIGNAL(currentIndexChanged(int)),
1006 this, SLOT(on_conv_threshold_changed(int)));
1007 connect(conv_threshold_cb_, SIGNAL(editTextChanged(const QString)),
1008 this, SLOT(on_conv_threshold_changed())); // index will be -1
1010 // Add the display type dropdown
1011 display_type_cb_ = new QComboBox();
1013 display_type_cb_->addItem(tr("analog"), DisplayAnalog);
1014 display_type_cb_->addItem(tr("converted"), DisplayConverted);
1015 display_type_cb_->addItem(tr("analog+converted"), DisplayBoth);
1017 cur_idx = display_type_cb_->findData(QVariant(display_type_));
1018 display_type_cb_->setCurrentIndex(cur_idx);
1020 layout->addRow(tr("Show traces for"), display_type_cb_);
1022 connect(display_type_cb_, SIGNAL(currentIndexChanged(int)),
1023 this, SLOT(on_display_type_changed(int)));
1025 // Update the conversion widget contents and states
1026 update_conversion_widgets();
1028 form->addRow(layout);
1031 void AnalogSignal::hover_point_changed(const QPoint &hp)
1033 Signal::hover_point_changed(hp);
1035 // Note: Even though the view area begins at 0, we exclude 0 because
1036 // that's also the value given when the cursor is over the header to the
1037 // left of the trace paint area
1039 value_at_hover_pos_ = std::numeric_limits<float>::quiet_NaN();
1042 value_at_hover_pos_ = value_at_pixel_pos_.at(hp.x());
1043 } catch (out_of_range) {
1044 value_at_hover_pos_ = std::numeric_limits<float>::quiet_NaN();
1049 void AnalogSignal::on_min_max_changed(float min, float max)
1055 perform_autoranging(false, false);
1058 void AnalogSignal::on_pos_vdivs_changed(int vdivs)
1060 if (vdivs == pos_vdivs_)
1065 // There has to be at least one div, positive or negative
1066 if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
1069 pvdiv_sb_->setValue(pos_vdivs_);
1073 perform_autoranging(true, true);
1075 // It could be that a positive or negative div was added, so update
1077 pvdiv_sb_->setValue(pos_vdivs_);
1078 nvdiv_sb_->setValue(neg_vdivs_);
1083 // Call order is important, otherwise the lazy event handler won't work
1084 owner_->extents_changed(false, true);
1085 owner_->row_item_appearance_changed(false, true);
1089 void AnalogSignal::on_neg_vdivs_changed(int vdivs)
1091 if (vdivs == neg_vdivs_)
1096 // There has to be at least one div, positive or negative
1097 if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
1100 pvdiv_sb_->setValue(pos_vdivs_);
1104 perform_autoranging(true, true);
1106 // It could be that a positive or negative div was added, so update
1108 pvdiv_sb_->setValue(pos_vdivs_);
1109 nvdiv_sb_->setValue(neg_vdivs_);
1114 // Call order is important, otherwise the lazy event handler won't work
1115 owner_->extents_changed(false, true);
1116 owner_->row_item_appearance_changed(false, true);
1120 void AnalogSignal::on_div_height_changed(int height)
1122 div_height_ = height;
1126 // Call order is important, otherwise the lazy event handler won't work
1127 owner_->extents_changed(false, true);
1128 owner_->row_item_appearance_changed(false, true);
1132 void AnalogSignal::on_resolution_changed(int index)
1134 scale_index_ = resolution_cb_->itemData(index).toInt();
1138 owner_->row_item_appearance_changed(false, true);
1141 void AnalogSignal::on_autoranging_changed(int state)
1143 autoranging_ = (state == Qt::Checked);
1146 perform_autoranging(false, true);
1149 // Call order is important, otherwise the lazy event handler won't work
1150 owner_->extents_changed(false, true);
1151 owner_->row_item_appearance_changed(false, true);
1155 void AnalogSignal::on_conversion_changed(int index)
1157 SignalBase::ConversionType old_conv_type = base_->get_conversion_type();
1159 SignalBase::ConversionType conv_type =
1160 (SignalBase::ConversionType)(conversion_cb_->itemData(index).toInt());
1162 if (conv_type != old_conv_type) {
1163 base_->set_conversion_type(conv_type);
1164 update_conversion_widgets();
1167 owner_->row_item_appearance_changed(false, true);
1171 void AnalogSignal::on_conv_threshold_changed(int index)
1173 SignalBase::ConversionType conv_type = base_->get_conversion_type();
1175 // Note: index is set to -1 if the text in the combo box matches none of
1176 // the entries in the combo box
1178 if ((index == -1) && (conv_threshold_cb_->currentText().length() == 0))
1181 // The combo box entry with the custom value has user_data set to -1
1182 const int user_data = conv_threshold_cb_->findText(
1183 conv_threshold_cb_->currentText());
1185 const bool use_custom_thr = (index == -1) || (user_data == -1);
1187 if (conv_type == SignalBase::A2LConversionByThreshold && use_custom_thr) {
1188 // Not one of the preset values, try to parse the combo box text
1189 // Note: Regex loosely based on
1190 // https://txt2re.com/index-c++.php3?s=0.1V&1&-13
1191 QString re1 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1192 QString re2 = "([a-zA-Z]*)"; // SI unit
1193 QRegExp regex(re1 + re2);
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 thr = tokens.at(1).toDouble();
1204 // Only restart the conversion if the threshold was updated.
1205 // We're starting a delayed conversion because the user may still be
1206 // typing and the UI would lag if we kept on restarting it immediately
1207 if (base_->set_conversion_option("threshold_value", thr))
1208 base_->start_conversion(true);
1211 if (conv_type == SignalBase::A2LConversionBySchmittTrigger && use_custom_thr) {
1212 // Not one of the preset values, try to parse the combo box text
1213 // Note: Regex loosely based on
1214 // https://txt2re.com/index-c++.php3?s=0.1V/0.2V&2&14&-22&3&15
1215 QString re1 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1216 QString re2 = "([a-zA-Z]*)"; // SI unit
1217 QString re3 = "\\/"; // Forward slash, not captured
1218 QString re4 = "([+-]?\\d*[\\.,]?\\d*)"; // Float value
1219 QString re5 = "([a-zA-Z]*)"; // SI unit
1220 QRegExp regex(re1 + re2 + re3 + re4 + re5);
1222 const QString text = conv_threshold_cb_->currentText();
1223 if (!regex.exactMatch(text))
1224 return; // String doesn't match the regex
1226 QStringList tokens = regex.capturedTexts();
1228 // For now, we simply assume that the unit is volt without modifiers
1229 const double low_thr = tokens.at(1).toDouble();
1230 const double high_thr = tokens.at(3).toDouble();
1232 // Only restart the conversion if one of the options was updated.
1233 // We're starting a delayed conversion because the user may still be
1234 // typing and the UI would lag if we kept on restarting it immediately
1235 bool o1 = base_->set_conversion_option("threshold_value_low", low_thr);
1236 bool o2 = base_->set_conversion_option("threshold_value_high", high_thr);
1238 base_->start_conversion(true); // Start delayed conversion
1241 base_->set_conversion_preset((SignalBase::ConversionPreset)index);
1243 // Immediately start the conversion if we're not using custom values
1244 // (i.e. we're using one of the presets)
1245 if (!use_custom_thr)
1246 base_->start_conversion();
1249 void AnalogSignal::on_delayed_conversion_starter()
1251 base_->start_conversion();
1254 void AnalogSignal::on_display_type_changed(int index)
1256 display_type_ = (DisplayType)(display_type_cb_->itemData(index).toInt());
1259 owner_->row_item_appearance_changed(false, true);
1262 void AnalogSignal::on_settingViewConversionThresholdDispMode_changed(const QVariant new_value)
1264 conversion_threshold_disp_mode_ = new_value.toInt();
1267 owner_->row_item_appearance_changed(false, true);
1270 } // namespace trace
1271 } // namespace views