pv/views/trace/analogsignal.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <extdef.h>
  21
  22 #include <cassert>
  23 #include <cmath>
  24 #include <cstdlib>
  25 #include <limits>
  26 #include <vector>
  27
  28 #include <QApplication>
  29 #include <QCheckBox>
  30 #include <QComboBox>
  31 #include <QFormLayout>
  32 #include <QGridLayout>
  33 #include <QLabel>
  34 #include <QString>
  35
  36 #include "analogsignal.hpp"
  37 #include "logicsignal.hpp"
  38 #include "view.hpp"
  39
  40 #include "pv/data/analog.hpp"
  41 #include "pv/data/analogsegment.hpp"
  42 #include "pv/data/logic.hpp"
  43 #include "pv/data/logicsegment.hpp"
  44 #include "pv/data/signalbase.hpp"
  45 #include "pv/globalsettings.hpp"
  46
  47 #include <libsigrokcxx/libsigrokcxx.hpp>
  48
  49 using std::deque;
  50 using std::div;
  51 using std::div_t;
  52 using std::max;
  53 using std::make_pair;
  54 using std::min;
  55 using std::numeric_limits;
  56 using std::pair;
  57 using std::shared_ptr;
  58 using std::vector;
  59
  60 namespace pv {
  61 namespace views {
  62 namespace trace {
  63
  64 const QColor AnalogSignal::SignalColours[4] = {
  65         QColor(0xC4, 0xA0, 0x00),       // Yellow
  66         QColor(0x87, 0x20, 0x7A),       // Magenta
  67         QColor(0x20, 0x4A, 0x87),       // Blue
  68         QColor(0x4E, 0x9A, 0x06)        // Green
  69 };
  70
  71 const QColor AnalogSignal::GridMajorColor = QColor(0, 0, 0, 40 * 256 / 100);
  72 const QColor AnalogSignal::GridMinorColor = QColor(0, 0, 0, 20 * 256 / 100);
  73
  74 const QColor AnalogSignal::SamplingPointColour(0x77, 0x77, 0x77);
  75
  76 const int64_t AnalogSignal::TracePaintBlockSize = 1024 * 1024;  // 4 MiB (due to float)
  77 const float AnalogSignal::EnvelopeThreshold = 64.0f;
  78
  79 const int AnalogSignal::MaximumVDivs = 10;
  80 const int AnalogSignal::MinScaleIndex = -6;
  81 const int AnalogSignal::MaxScaleIndex = 7;
  82
  83 const int AnalogSignal::InfoTextMarginRight = 20;
  84 const int AnalogSignal::InfoTextMarginBottom = 5;
  85
  86 AnalogSignal::AnalogSignal(
  87         pv::Session &session,
  88         shared_ptr<data::SignalBase> base) :
  89         Signal(session, base),
  90         scale_index_(4), // 20 per div
  91         scale_index_drag_offset_(0),
  92         div_height_(3 * QFontMetrics(QApplication::font()).height()),
  93         pos_vdivs_(1),
  94         neg_vdivs_(1),
  95         resolution_(0),
  96         conversion_type_(data::SignalBase::NoConversion),
  97         display_type_(DisplayBoth),
  98         autoranging_(true)
  99 {
 100         pv::data::Analog* analog_data =
 101                 dynamic_cast<pv::data::Analog*>(data().get());
 102
 103         connect(analog_data, SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
 104                 this, SLOT(on_samples_added()));
 105
 106         base_->set_colour(SignalColours[base_->index() % countof(SignalColours)]);
 107         update_scale();
 108 }
 109
 110 shared_ptr<pv::data::SignalData> AnalogSignal::data() const
 111 {
 112         return base_->analog_data();
 113 }
 114
 115 void AnalogSignal::save_settings(QSettings &settings) const
 116 {
 117         settings.setValue("pos_vdivs", pos_vdivs_);
 118         settings.setValue("neg_vdivs", neg_vdivs_);
 119         settings.setValue("scale_index", scale_index_);
 120         settings.setValue("conversion_type", conversion_type_);
 121         settings.setValue("display_type", display_type_);
 122         settings.setValue("autoranging", autoranging_);
 123 }
 124
 125 void AnalogSignal::restore_settings(QSettings &settings)
 126 {
 127         if (settings.contains("pos_vdivs"))
 128                 pos_vdivs_ = settings.value("pos_vdivs").toInt();
 129
 130         if (settings.contains("neg_vdivs"))
 131                 neg_vdivs_ = settings.value("neg_vdivs").toInt();
 132
 133         if (settings.contains("scale_index")) {
 134                 scale_index_ = settings.value("scale_index").toInt();
 135                 update_scale();
 136         }
 137
 138         if (settings.contains("conversion_type")) {
 139                 conversion_type_ = (data::SignalBase::ConversionType)(settings.value("conversion_type").toInt());
 140                 update_conversion_type();
 141         }
 142
 143         if (settings.contains("display_type"))
 144                 display_type_ = (DisplayType)(settings.value("display_type").toInt());
 145
 146         if (settings.contains("autoranging"))
 147                 autoranging_ = settings.value("autoranging").toBool();
 148 }
 149
 150 pair<int, int> AnalogSignal::v_extents() const
 151 {
 152         const int ph = pos_vdivs_ * div_height_;
 153         const int nh = neg_vdivs_ * div_height_;
 154         return make_pair(-ph, nh);
 155 }
 156
 157 int AnalogSignal::scale_handle_offset() const
 158 {
 159         const int h = (pos_vdivs_ + neg_vdivs_) * div_height_;
 160
 161         return ((scale_index_drag_offset_ - scale_index_) * h / 4) - h / 2;
 162 }
 163
 164 void AnalogSignal::scale_handle_dragged(int offset)
 165 {
 166         const int h = (pos_vdivs_ + neg_vdivs_) * div_height_;
 167
 168         scale_index_ = scale_index_drag_offset_ - (offset + h / 2) / (h / 4);
 169
 170         update_scale();
 171 }
 172
 173 void AnalogSignal::scale_handle_drag_release()
 174 {
 175         scale_index_drag_offset_ = scale_index_;
 176         update_scale();
 177 }
 178
 179 void AnalogSignal::paint_back(QPainter &p, ViewItemPaintParams &pp)
 180 {
 181         if (base_->enabled()) {
 182                 Trace::paint_back(p, pp);
 183                 paint_axis(p, pp, get_visual_y());
 184         }
 185 }
 186
 187 void AnalogSignal::paint_mid(QPainter &p, ViewItemPaintParams &pp)
 188 {
 189         assert(base_->analog_data());
 190         assert(owner_);
 191
 192         const int y = get_visual_y();
 193
 194         if (!base_->enabled())
 195                 return;
 196
 197         if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
 198                 paint_grid(p, y, pp.left(), pp.right());
 199
 200                 const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
 201                         base_->analog_data()->analog_segments();
 202                 if (segments.empty())
 203                         return;
 204
 205                 const shared_ptr<pv::data::AnalogSegment> &segment =
 206                         segments.front();
 207
 208                 const double pixels_offset = pp.pixels_offset();
 209                 const double samplerate = max(1.0, segment->samplerate());
 210                 const pv::util::Timestamp& start_time = segment->start_time();
 211                 const int64_t last_sample = segment->get_sample_count() - 1;
 212                 const double samples_per_pixel = samplerate * pp.scale();
 213                 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
 214                 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
 215
 216                 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
 217                         (int64_t)0), last_sample);
 218                 const int64_t end_sample = min(max((ceil(end) + 1).convert_to<int64_t>(),
 219                         (int64_t)0), last_sample);
 220
 221                 if (samples_per_pixel < EnvelopeThreshold)
 222                         paint_trace(p, segment, y, pp.left(),
 223                                 start_sample, end_sample,
 224                                 pixels_offset, samples_per_pixel);
 225                 else
 226                         paint_envelope(p, segment, y, pp.left(),
 227                                 start_sample, end_sample,
 228                                 pixels_offset, samples_per_pixel);
 229         }
 230
 231         if ((display_type_ == DisplayConverted) || (display_type_ == DisplayBoth)) {
 232                 if (((conversion_type_ == data::SignalBase::A2LConversionByTreshold) ||
 233                         (conversion_type_ == data::SignalBase::A2LConversionBySchmittTrigger))) {
 234
 235                         paint_logic_mid(p, pp);
 236                 }
 237         }
 238 }
 239
 240 void AnalogSignal::paint_fore(QPainter &p, ViewItemPaintParams &pp)
 241 {
 242         if (!enabled())
 243                 return;
 244
 245         if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
 246                 const int y = get_visual_y();
 247
 248                 // Show the info section on the right side of the trace
 249                 const QString infotext = QString("%1 V/div").arg(resolution_);
 250
 251                 p.setPen(base_->colour());
 252                 p.setFont(QApplication::font());
 253
 254                 const QRectF bounding_rect = QRectF(pp.left(),
 255                                 y + v_extents().first,
 256                                 pp.width() - InfoTextMarginRight,
 257                                 v_extents().second - v_extents().first - InfoTextMarginBottom);
 258
 259                 p.drawText(bounding_rect, Qt::AlignRight | Qt::AlignBottom, infotext);
 260         }
 261 }
 262
 263 void AnalogSignal::paint_grid(QPainter &p, int y, int left, int right)
 264 {
 265         p.setRenderHint(QPainter::Antialiasing, false);
 266
 267         GlobalSettings settings;
 268         const bool show_analog_minor_grid =
 269                 settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool();
 270
 271         if (pos_vdivs_ > 0) {
 272                 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
 273                 for (int i = 1; i <= pos_vdivs_; i++) {
 274                         const float dy = i * div_height_;
 275                         p.drawLine(QLineF(left, y - dy, right, y - dy));
 276                 }
 277         }
 278
 279         if ((pos_vdivs_ > 0) && show_analog_minor_grid) {
 280                 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
 281                 for (int i = 0; i < pos_vdivs_; i++) {
 282                         const float dy = i * div_height_;
 283                         const float dy25 = dy + (0.25 * div_height_);
 284                         const float dy50 = dy + (0.50 * div_height_);
 285                         const float dy75 = dy + (0.75 * div_height_);
 286                         p.drawLine(QLineF(left, y - dy25, right, y - dy25));
 287                         p.drawLine(QLineF(left, y - dy50, right, y - dy50));
 288                         p.drawLine(QLineF(left, y - dy75, right, y - dy75));
 289                 }
 290         }
 291
 292         if (neg_vdivs_ > 0) {
 293                 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
 294                 for (int i = 1; i <= neg_vdivs_; i++) {
 295                         const float dy = i * div_height_;
 296                         p.drawLine(QLineF(left, y + dy, right, y + dy));
 297                 }
 298         }
 299
 300         if ((pos_vdivs_ > 0) && show_analog_minor_grid) {
 301                 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
 302                 for (int i = 0; i < neg_vdivs_; i++) {
 303                         const float dy = i * div_height_;
 304                         const float dy25 = dy + (0.25 * div_height_);
 305                         const float dy50 = dy + (0.50 * div_height_);
 306                         const float dy75 = dy + (0.75 * div_height_);
 307                         p.drawLine(QLineF(left, y + dy25, right, y + dy25));
 308                         p.drawLine(QLineF(left, y + dy50, right, y + dy50));
 309                         p.drawLine(QLineF(left, y + dy75, right, y + dy75));
 310                 }
 311         }
 312
 313         p.setRenderHint(QPainter::Antialiasing, true);
 314 }
 315
 316 void AnalogSignal::paint_trace(QPainter &p,
 317         const shared_ptr<pv::data::AnalogSegment> &segment,
 318         int y, int left, const int64_t start, const int64_t end,
 319         const double pixels_offset, const double samples_per_pixel)
 320 {
 321         if (end <= start)
 322                 return;
 323
 324         // Calculate and paint the sampling points if enabled and useful
 325         GlobalSettings settings;
 326         const bool show_sampling_points =
 327                 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() &&
 328                 (samples_per_pixel < 0.25);
 329
 330         p.setPen(base_->colour());
 331
 332         const int64_t points_count = end - start;
 333
 334         QPointF *points = new QPointF[points_count];
 335         QPointF *point = points;
 336
 337         QRectF *sampling_points = nullptr;
 338         if (show_sampling_points)
 339                  sampling_points = new QRectF[points_count];
 340         QRectF *sampling_point = sampling_points;
 341
 342         int64_t sample_count = min(points_count, TracePaintBlockSize);
 343         int64_t block_sample = 0;
 344         const float *sample_block = segment->get_samples(start, start + sample_count);
 345
 346         const int w = 2;
 347         for (int64_t sample = start; sample != end; sample++, block_sample++) {
 348
 349                 if (block_sample == TracePaintBlockSize) {
 350                         block_sample = 0;
 351                         delete[] sample_block;
 352                         sample_count = min(points_count - sample, TracePaintBlockSize);
 353                         sample_block = segment->get_samples(sample, sample + sample_count);
 354                 }
 355
 356                 const float x = (sample / samples_per_pixel -
 357                         pixels_offset) + left;
 358
 359                 *point++ = QPointF(x, y - sample_block[block_sample] * scale_);
 360
 361                 if (show_sampling_points)
 362                         *sampling_point++ =
 363                                 QRectF(x - (w / 2), y - sample_block[block_sample] * scale_ - (w / 2), w, w);
 364         }
 365         delete[] sample_block;
 366
 367         p.drawPolyline(points, points_count);
 368
 369         if (show_sampling_points) {
 370                 p.setPen(SamplingPointColour);
 371                 p.drawRects(sampling_points, points_count);
 372                 delete[] sampling_points;
 373         }
 374
 375         delete[] points;
 376 }
 377
 378 void AnalogSignal::paint_envelope(QPainter &p,
 379         const shared_ptr<pv::data::AnalogSegment> &segment,
 380         int y, int left, const int64_t start, const int64_t end,
 381         const double pixels_offset, const double samples_per_pixel)
 382 {
 383         using pv::data::AnalogSegment;
 384
 385         AnalogSegment::EnvelopeSection e;
 386         segment->get_envelope_section(e, start, end, samples_per_pixel);
 387
 388         if (e.length < 2)
 389                 return;
 390
 391         p.setPen(QPen(Qt::NoPen));
 392         p.setBrush(base_->colour());
 393
 394         QRectF *const rects = new QRectF[e.length];
 395         QRectF *rect = rects;
 396
 397         for (uint64_t sample = 0; sample < e.length - 1; sample++) {
 398                 const float x = ((e.scale * sample + e.start) /
 399                         samples_per_pixel - pixels_offset) + left;
 400                 const AnalogSegment::EnvelopeSample *const s =
 401                         e.samples + sample;
 402
 403                 // We overlap this sample with the next so that vertical
 404                 // gaps do not appear during steep rising or falling edges
 405                 const float b = y - max(s->max, (s + 1)->min) * scale_;
 406                 const float t = y - min(s->min, (s + 1)->max) * scale_;
 407
 408                 float h = b - t;
 409                 if (h >= 0.0f && h <= 1.0f)
 410                         h = 1.0f;
 411                 if (h <= 0.0f && h >= -1.0f)
 412                         h = -1.0f;
 413
 414                 *rect++ = QRectF(x, t, 1.0f, h);
 415         }
 416
 417         p.drawRects(rects, e.length);
 418
 419         delete[] rects;
 420         delete[] e.samples;
 421 }
 422
 423 void AnalogSignal::paint_logic_mid(QPainter &p, ViewItemPaintParams &pp)
 424 {
 425         QLineF *line;
 426
 427         vector< pair<int64_t, bool> > edges;
 428
 429         assert(base_);
 430
 431         const int y = get_visual_y();
 432
 433         if (!base_->enabled() || !base_->logic_data())
 434                 return;
 435
 436         const int signal_margin =
 437                 QFontMetrics(QApplication::font()).height() / 2;
 438
 439         const int ph = min(pos_vdivs_, 1) * div_height_;
 440         const int nh = min(neg_vdivs_, 1) * div_height_;
 441         const float high_offset = y - ph + signal_margin + 0.5f;
 442         const float low_offset = y + nh - signal_margin - 0.5f;
 443
 444         const deque< shared_ptr<pv::data::LogicSegment> > &segments =
 445                 base_->logic_data()->logic_segments();
 446
 447         if (segments.empty())
 448                 return;
 449
 450         const shared_ptr<pv::data::LogicSegment> &segment =
 451                 segments.front();
 452
 453         double samplerate = segment->samplerate();
 454
 455         // Show sample rate as 1Hz when it is unknown
 456         if (samplerate == 0.0)
 457                 samplerate = 1.0;
 458
 459         const double pixels_offset = pp.pixels_offset();
 460         const pv::util::Timestamp& start_time = segment->start_time();
 461         const int64_t last_sample = segment->get_sample_count() - 1;
 462         const double samples_per_pixel = samplerate * pp.scale();
 463         const double pixels_per_sample = 1 / samples_per_pixel;
 464         const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
 465         const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
 466
 467         const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
 468                 (int64_t)0), last_sample);
 469         const uint64_t end_sample = min(max(ceil(end).convert_to<int64_t>(),
 470                 (int64_t)0), last_sample);
 471
 472         segment->get_subsampled_edges(edges, start_sample, end_sample,
 473                 samples_per_pixel / LogicSignal::Oversampling, 0);
 474         assert(edges.size() >= 2);
 475
 476         // Check whether we need to paint the sampling points
 477         GlobalSettings settings;
 478         const bool show_sampling_points =
 479                 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool() &&
 480                 (samples_per_pixel < 0.25);
 481
 482         vector<QRectF> sampling_points;
 483         float sampling_point_x = 0.0f;
 484         int64_t sampling_point_sample = start_sample;
 485         const int w = 2;
 486
 487         if (show_sampling_points) {
 488                 sampling_points.reserve(end_sample - start_sample + 1);
 489                 sampling_point_x = (edges.cbegin()->first / samples_per_pixel - pixels_offset) + pp.left();
 490         }
 491
 492         // Paint the edges
 493         const unsigned int edge_count = edges.size() - 2;
 494         QLineF *const edge_lines = new QLineF[edge_count];
 495         line = edge_lines;
 496
 497         for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
 498                 const float x = ((*i).first / samples_per_pixel -
 499                         pixels_offset) + pp.left();
 500                 *line++ = QLineF(x, high_offset, x, low_offset);
 501
 502                 if (show_sampling_points)
 503                         while (sampling_point_sample < (*i).first) {
 504                                 const float y = (*i).second ? low_offset : high_offset;
 505                                 sampling_points.emplace_back(
 506                                         QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
 507                                 sampling_point_sample++;
 508                                 sampling_point_x += pixels_per_sample;
 509                         };
 510         }
 511
 512         // Calculate the sample points from the last edge to the end of the trace
 513         if (show_sampling_points)
 514                 while ((uint64_t)sampling_point_sample <= end_sample) {
 515                         // Signal changed after the last edge, so the level is inverted
 516                         const float y = (edges.cend() - 1)->second ? high_offset : low_offset;
 517                         sampling_points.emplace_back(
 518                                 QRectF(sampling_point_x - (w / 2), y - (w / 2), w, w));
 519                         sampling_point_sample++;
 520                         sampling_point_x += pixels_per_sample;
 521                 };
 522
 523         p.setPen(LogicSignal::EdgeColour);
 524         p.drawLines(edge_lines, edge_count);
 525         delete[] edge_lines;
 526
 527         // Paint the caps
 528         const unsigned int max_cap_line_count = edges.size();
 529         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 530
 531         p.setPen(LogicSignal::HighColour);
 532         paint_logic_caps(p, cap_lines, edges, true, samples_per_pixel,
 533                 pixels_offset, pp.left(), high_offset);
 534         p.setPen(LogicSignal::LowColour);
 535         paint_logic_caps(p, cap_lines, edges, false, samples_per_pixel,
 536                 pixels_offset, pp.left(), low_offset);
 537
 538         delete[] cap_lines;
 539
 540         // Paint the sampling points
 541         if (show_sampling_points) {
 542                 p.setPen(SamplingPointColour);
 543                 p.drawRects(sampling_points.data(), sampling_points.size());
 544         }
 545 }
 546
 547 void AnalogSignal::paint_logic_caps(QPainter &p, QLineF *const lines,
 548         vector< pair<int64_t, bool> > &edges, bool level,
 549         double samples_per_pixel, double pixels_offset, float x_offset,
 550         float y_offset)
 551 {
 552         QLineF *line = lines;
 553
 554         for (auto i = edges.begin(); i != (edges.end() - 1); i++)
 555                 if ((*i).second == level) {
 556                         *line++ = QLineF(
 557                                 ((*i).first / samples_per_pixel -
 558                                         pixels_offset) + x_offset, y_offset,
 559                                 ((*(i+1)).first / samples_per_pixel -
 560                                         pixels_offset) + x_offset, y_offset);
 561                 }
 562
 563         p.drawLines(lines, line - lines);
 564 }
 565
 566 float AnalogSignal::get_resolution(int scale_index)
 567 {
 568         const float seq[] = {1.0f, 2.0f, 5.0f};
 569
 570         const int offset = numeric_limits<int>::max() / (2 * countof(seq));
 571         const div_t d = div((int)(scale_index + countof(seq) * offset),
 572                 countof(seq));
 573
 574         return powf(10.0f, d.quot - offset) * seq[d.rem];
 575 }
 576
 577 void AnalogSignal::update_scale()
 578 {
 579         resolution_ = get_resolution(scale_index_);
 580         scale_ = div_height_ / resolution_;
 581 }
 582
 583 void AnalogSignal::update_conversion_type()
 584 {
 585         base_->set_conversion_type(conversion_type_);
 586
 587         if (owner_)
 588                 owner_->row_item_appearance_changed(false, true);
 589 }
 590
 591 void AnalogSignal::perform_autoranging(bool keep_divs, bool force_update)
 592 {
 593         const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
 594                 base_->analog_data()->analog_segments();
 595
 596         if (segments.empty())
 597                 return;
 598
 599         static double prev_min = 0, prev_max = 0;
 600         double min = 0, max = 0;
 601
 602         for (shared_ptr<pv::data::AnalogSegment> segment : segments) {
 603                 pair<double, double> mm = segment->get_min_max();
 604                 min = std::min(min, mm.first);
 605                 max = std::max(max, mm.second);
 606         }
 607
 608         if ((min == prev_min) && (max == prev_max) && !force_update)
 609                 return;
 610
 611         prev_min = min;
 612         prev_max = max;
 613
 614         // If we're allowed to alter the div assignment...
 615         if (!keep_divs) {
 616                 // Use all divs for the positive range if there are no negative values
 617                 if ((min == 0) && (neg_vdivs_ > 0)) {
 618                         pos_vdivs_ += neg_vdivs_;
 619                         neg_vdivs_ = 0;
 620                 }
 621
 622                 // Split up the divs if there are negative values but no negative divs
 623                 if ((min < 0) && (neg_vdivs_ == 0)) {
 624                         neg_vdivs_ = pos_vdivs_ / 2;
 625                         pos_vdivs_ -= neg_vdivs_;
 626                 }
 627         }
 628
 629         // If there is still no positive div when we need it, add one
 630         // (this can happen when pos_vdivs==neg_vdivs==0)
 631         if ((max > 0) && (pos_vdivs_ == 0)) {
 632                 pos_vdivs_ = 1;
 633                 owner_->extents_changed(false, true);
 634         }
 635
 636         // If there is still no negative div when we need it, add one
 637         // (this can happen when pos_vdivs was 0 or 1 when trying to split)
 638         if ((min < 0) && (neg_vdivs_ == 0)) {
 639                 neg_vdivs_ = 1;
 640                 owner_->extents_changed(false, true);
 641         }
 642
 643         double min_value_per_div;
 644         if ((pos_vdivs_ > 0) && (neg_vdivs_ >  0))
 645                 min_value_per_div = std::max(max / pos_vdivs_, -min / neg_vdivs_);
 646         else if (pos_vdivs_ > 0)
 647                 min_value_per_div = max / pos_vdivs_;
 648         else
 649                 min_value_per_div = -min / neg_vdivs_;
 650
 651         // Find first scale value that is bigger than the value we need
 652         for (int i = MinScaleIndex; i < MaxScaleIndex; i++)
 653                 if (get_resolution(i) > min_value_per_div) {
 654                         scale_index_ = i;
 655                         break;
 656                 }
 657
 658         update_scale();
 659 }
 660
 661 void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
 662 {
 663         // Add the standard options
 664         Signal::populate_popup_form(parent, form);
 665
 666         QFormLayout *const layout = new QFormLayout;
 667
 668         // Add the number of vdivs
 669         pvdiv_sb_ = new QSpinBox(parent);
 670         pvdiv_sb_->setRange(0, MaximumVDivs);
 671         pvdiv_sb_->setValue(pos_vdivs_);
 672         connect(pvdiv_sb_, SIGNAL(valueChanged(int)),
 673                 this, SLOT(on_pos_vdivs_changed(int)));
 674         layout->addRow(tr("Number of pos vertical divs"), pvdiv_sb_);
 675
 676         nvdiv_sb_ = new QSpinBox(parent);
 677         nvdiv_sb_->setRange(0, MaximumVDivs);
 678         nvdiv_sb_->setValue(neg_vdivs_);
 679         connect(nvdiv_sb_, SIGNAL(valueChanged(int)),
 680                 this, SLOT(on_neg_vdivs_changed(int)));
 681         layout->addRow(tr("Number of neg vertical divs"), nvdiv_sb_);
 682
 683         // Add the vertical resolution
 684         resolution_cb_ = new QComboBox(parent);
 685
 686         for (int i = MinScaleIndex; i < MaxScaleIndex; i++) {
 687                 const QString label = QString("%1").arg(get_resolution(i));
 688                 resolution_cb_->insertItem(0, label, QVariant(i));
 689         }
 690
 691         int cur_idx = resolution_cb_->findData(QVariant(scale_index_));
 692         resolution_cb_->setCurrentIndex(cur_idx);
 693
 694         connect(resolution_cb_, SIGNAL(currentIndexChanged(int)),
 695                 this, SLOT(on_resolution_changed(int)));
 696
 697         QGridLayout *const vdiv_layout = new QGridLayout;
 698         QLabel *const vdiv_unit = new QLabel(tr("V/div"));
 699         vdiv_layout->addWidget(resolution_cb_, 0, 0);
 700         vdiv_layout->addWidget(vdiv_unit, 0, 1);
 701
 702         layout->addRow(tr("Vertical resolution"), vdiv_layout);
 703
 704         // Add the autoranging checkbox
 705         QCheckBox* autoranging_cb = new QCheckBox();
 706         autoranging_cb->setCheckState(autoranging_ ? Qt::Checked : Qt::Unchecked);
 707
 708         connect(autoranging_cb, SIGNAL(stateChanged(int)),
 709                 this, SLOT(on_autoranging_changed(int)));
 710
 711         layout->addRow(tr("Autoranging"), autoranging_cb);
 712
 713         // Add the conversion type dropdown
 714         conversion_cb_ = new QComboBox();
 715
 716         conversion_cb_->addItem("none", data::SignalBase::NoConversion);
 717         conversion_cb_->addItem("to logic via threshold", data::SignalBase::A2LConversionByTreshold);
 718         conversion_cb_->addItem("to logic via schmitt-trigger", data::SignalBase::A2LConversionBySchmittTrigger);
 719
 720         cur_idx = conversion_cb_->findData(QVariant(conversion_type_));
 721         conversion_cb_->setCurrentIndex(cur_idx);
 722
 723 //      layout->addRow(tr("Conversion"), conversion_cb_);
 724
 725         connect(conversion_cb_, SIGNAL(currentIndexChanged(int)),
 726                 this, SLOT(on_conversion_changed(int)));
 727
 728         // Add the display type dropdown
 729         display_type_cb_ = new QComboBox();
 730
 731         display_type_cb_->addItem(tr("Analog"), DisplayAnalog);
 732         display_type_cb_->addItem(tr("Converted"), DisplayConverted);
 733         display_type_cb_->addItem(tr("Both"), DisplayBoth);
 734
 735         cur_idx = display_type_cb_->findData(QVariant(display_type_));
 736         display_type_cb_->setCurrentIndex(cur_idx);
 737
 738 //      layout->addRow(tr("Traces to show:"), display_type_cb_);
 739
 740         connect(display_type_cb_, SIGNAL(currentIndexChanged(int)),
 741                 this, SLOT(on_display_type_changed(int)));
 742
 743         form->addRow(layout);
 744 }
 745
 746 void AnalogSignal::on_samples_added()
 747 {
 748         perform_autoranging(false, false);
 749 }
 750
 751 void AnalogSignal::on_pos_vdivs_changed(int vdivs)
 752 {
 753         if (vdivs == pos_vdivs_)
 754                 return;
 755
 756         pos_vdivs_ = vdivs;
 757
 758         // There has to be at least one div, positive or negative
 759         if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
 760                 pos_vdivs_ = 1;
 761                 if (pvdiv_sb_)
 762                         pvdiv_sb_->setValue(pos_vdivs_);
 763         }
 764
 765         if (autoranging_) {
 766                 perform_autoranging(true, true);
 767
 768                 // It could be that a positive or negative div was added, so update
 769                 if (pvdiv_sb_) {
 770                         pvdiv_sb_->setValue(pos_vdivs_);
 771                         nvdiv_sb_->setValue(neg_vdivs_);
 772                 }
 773         }
 774
 775         if (owner_) {
 776                 // Call order is important, otherwise the lazy event handler won't work
 777                 owner_->extents_changed(false, true);
 778                 owner_->row_item_appearance_changed(false, true);
 779         }
 780 }
 781
 782 void AnalogSignal::on_neg_vdivs_changed(int vdivs)
 783 {
 784         if (vdivs == neg_vdivs_)
 785                 return;
 786
 787         neg_vdivs_ = vdivs;
 788
 789         // There has to be at least one div, positive or negative
 790         if ((neg_vdivs_ == 0) && (pos_vdivs_ == 0)) {
 791                 pos_vdivs_ = 1;
 792                 if (pvdiv_sb_)
 793                         pvdiv_sb_->setValue(pos_vdivs_);
 794         }
 795
 796         if (autoranging_) {
 797                 perform_autoranging(true, true);
 798
 799                 // It could be that a positive or negative div was added, so update
 800                 if (pvdiv_sb_) {
 801                         pvdiv_sb_->setValue(pos_vdivs_);
 802                         nvdiv_sb_->setValue(neg_vdivs_);
 803                 }
 804         }
 805
 806         if (owner_) {
 807                 // Call order is important, otherwise the lazy event handler won't work
 808                 owner_->extents_changed(false, true);
 809                 owner_->row_item_appearance_changed(false, true);
 810         }
 811 }
 812
 813 void AnalogSignal::on_resolution_changed(int index)
 814 {
 815         scale_index_ = resolution_cb_->itemData(index).toInt();
 816         update_scale();
 817
 818         if (owner_)
 819                 owner_->row_item_appearance_changed(false, true);
 820 }
 821
 822 void AnalogSignal::on_autoranging_changed(int state)
 823 {
 824         autoranging_ = (state == Qt::Checked);
 825
 826         if (autoranging_)
 827                 perform_autoranging(false, true);
 828
 829         if (owner_) {
 830                 // Call order is important, otherwise the lazy event handler won't work
 831                 owner_->extents_changed(false, true);
 832                 owner_->row_item_appearance_changed(false, true);
 833         }
 834 }
 835
 836 void AnalogSignal::on_conversion_changed(int index)
 837 {
 838         data::SignalBase::ConversionType old_conv_type = conversion_type_;
 839
 840         conversion_type_ = (data::SignalBase::ConversionType)(conversion_cb_->itemData(index).toInt());
 841
 842         if (conversion_type_ != old_conv_type) {
 843                 base_->set_conversion_type(conversion_type_);
 844                 update_conversion_type();
 845         }
 846 }
 847
 848 void AnalogSignal::on_display_type_changed(int index)
 849 {
 850         display_type_ = (DisplayType)(display_type_cb_->itemData(index).toInt());
 851
 852         if (owner_)
 853                 owner_->row_item_appearance_changed(false, true);
 854 }
 855
 856 } // namespace trace
 857 } // namespace views
 858 } // namespace pv