pv/view/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 <QSpinBox>
  35 #include <QString>
  36
  37 #include "analogsignal.hpp"
  38 #include "pv/data/analog.hpp"
  39 #include "pv/data/analogsegment.hpp"
  40 #include "pv/data/logic.hpp"
  41 #include "pv/data/logicsegment.hpp"
  42 #include "pv/data/signalbase.hpp"
  43 #include "pv/view/view.hpp"
  44 #include "pv/view/logicsignal.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 TraceView {
  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 float AnalogSignal::EnvelopeThreshold = 256.0f;
  77
  78 const int AnalogSignal::MaximumVDivs = 10;
  79 const int AnalogSignal::MinScaleIndex = -6;
  80 const int AnalogSignal::MaxScaleIndex = 7;
  81
  82 const int AnalogSignal::InfoTextMarginRight = 20;
  83 const int AnalogSignal::InfoTextMarginBottom = 5;
  84
  85 AnalogSignal::AnalogSignal(
  86         pv::Session &session,
  87         shared_ptr<data::SignalBase> base) :
  88         Signal(session, base),
  89         scale_index_(4), // 20 per div
  90         scale_index_drag_offset_(0),
  91         div_height_(3 * QFontMetrics(QApplication::font()).height()),
  92         pos_vdivs_(1),
  93         neg_vdivs_(1),
  94         resolution_(0),
  95         conversion_type_(data::SignalBase::NoConversion),
  96         display_type_(DisplayBoth),
  97         autoranging_(true)
  98 {
  99         pv::data::Analog* analog_data =
 100                 dynamic_cast<pv::data::Analog*>(data().get());
 101
 102         connect(analog_data, SIGNAL(samples_added(QObject*, uint64_t, uint64_t)),
 103                 this, SLOT(on_samples_added()));
 104
 105         base_->set_colour(SignalColours[base_->index() % countof(SignalColours)]);
 106         update_scale();
 107 }
 108
 109 shared_ptr<pv::data::SignalData> AnalogSignal::data() const
 110 {
 111         return base_->analog_data();
 112 }
 113
 114 void AnalogSignal::save_settings(QSettings &settings) const
 115 {
 116         settings.setValue("pos_vdivs", pos_vdivs_);
 117         settings.setValue("neg_vdivs", neg_vdivs_);
 118         settings.setValue("scale_index", scale_index_);
 119         settings.setValue("conversion_type", conversion_type_);
 120         settings.setValue("display_type", display_type_);
 121         settings.setValue("autoranging", autoranging_);
 122 }
 123
 124 void AnalogSignal::restore_settings(QSettings &settings)
 125 {
 126         if (settings.contains("pos_vdivs"))
 127                 pos_vdivs_ = settings.value("pos_vdivs").toInt();
 128
 129         if (settings.contains("neg_vdivs"))
 130                 neg_vdivs_ = settings.value("neg_vdivs").toInt();
 131
 132         if (settings.contains("scale_index")) {
 133                 scale_index_ = settings.value("scale_index").toInt();
 134                 update_scale();
 135         }
 136
 137         if (settings.contains("conversion_type")) {
 138                 conversion_type_ = (data::SignalBase::ConversionType)(settings.value("conversion_type").toInt());
 139                 update_conversion_type();
 140         }
 141
 142         if (settings.contains("display_type"))
 143                 display_type_ = (DisplayType)(settings.value("display_type").toInt());
 144
 145         if (settings.contains("autoranging"))
 146                 autoranging_ = settings.value("autoranging").toBool();
 147 }
 148
 149 pair<int, int> AnalogSignal::v_extents() const
 150 {
 151         const int ph = pos_vdivs_ * div_height_;
 152         const int nh = neg_vdivs_ * div_height_;
 153         return make_pair(-ph, nh);
 154 }
 155
 156 int AnalogSignal::scale_handle_offset() const
 157 {
 158         const int h = (pos_vdivs_ + neg_vdivs_) * div_height_;
 159
 160         return ((scale_index_drag_offset_ - scale_index_) * h / 4) - h / 2;
 161 }
 162
 163 void AnalogSignal::scale_handle_dragged(int offset)
 164 {
 165         const int h = (pos_vdivs_ + neg_vdivs_) * div_height_;
 166
 167         scale_index_ = scale_index_drag_offset_ - (offset + h / 2) / (h / 4);
 168
 169         update_scale();
 170 }
 171
 172 void AnalogSignal::scale_handle_drag_release()
 173 {
 174         scale_index_drag_offset_ = scale_index_;
 175         update_scale();
 176 }
 177
 178 void AnalogSignal::paint_back(QPainter &p, const ViewItemPaintParams &pp)
 179 {
 180         if (base_->enabled()) {
 181                 Trace::paint_back(p, pp);
 182                 paint_axis(p, pp, get_visual_y());
 183         }
 184 }
 185
 186 void AnalogSignal::paint_mid(QPainter &p, const ViewItemPaintParams &pp)
 187 {
 188         assert(base_->analog_data());
 189         assert(owner_);
 190
 191         const int y = get_visual_y();
 192
 193         if (!base_->enabled())
 194                 return;
 195
 196         if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
 197                 paint_grid(p, y, pp.left(), pp.right());
 198
 199                 const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
 200                         base_->analog_data()->analog_segments();
 201                 if (segments.empty())
 202                         return;
 203
 204                 const shared_ptr<pv::data::AnalogSegment> &segment =
 205                         segments.front();
 206
 207                 const double pixels_offset = pp.pixels_offset();
 208                 const double samplerate = max(1.0, segment->samplerate());
 209                 const pv::util::Timestamp& start_time = segment->start_time();
 210                 const int64_t last_sample = segment->get_sample_count() - 1;
 211                 const double samples_per_pixel = samplerate * pp.scale();
 212                 const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
 213                 const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
 214
 215                 const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
 216                         (int64_t)0), last_sample);
 217                 const int64_t end_sample = min(max((ceil(end) + 1).convert_to<int64_t>(),
 218                         (int64_t)0), last_sample);
 219
 220                 if (samples_per_pixel < EnvelopeThreshold)
 221                         paint_trace(p, segment, y, pp.left(),
 222                                 start_sample, end_sample,
 223                                 pixels_offset, samples_per_pixel);
 224                 else
 225                         paint_envelope(p, segment, y, pp.left(),
 226                                 start_sample, end_sample,
 227                                 pixels_offset, samples_per_pixel);
 228         }
 229
 230         if ((display_type_ == DisplayConverted) || (display_type_ == DisplayBoth)) {
 231                 if (((conversion_type_ == data::SignalBase::A2LConversionByTreshold) ||
 232                         (conversion_type_ == data::SignalBase::A2LConversionBySchmittTrigger))) {
 233
 234                         paint_logic_mid(p, pp);
 235                 }
 236         }
 237 }
 238
 239 void AnalogSignal::paint_fore(QPainter &p, const ViewItemPaintParams &pp)
 240 {
 241         if (!enabled())
 242                 return;
 243
 244         if ((display_type_ == DisplayAnalog) || (display_type_ == DisplayBoth)) {
 245                 const int y = get_visual_y();
 246
 247                 // Show the info section on the right side of the trace
 248                 const QString infotext = QString("%1 V/div").arg(resolution_);
 249
 250                 p.setPen(base_->colour());
 251                 p.setFont(QApplication::font());
 252
 253                 const QRectF bounding_rect = QRectF(pp.left(),
 254                                 y + v_extents().first,
 255                                 pp.width() - InfoTextMarginRight,
 256                                 v_extents().second - v_extents().first - InfoTextMarginBottom);
 257
 258                 p.drawText(bounding_rect, Qt::AlignRight | Qt::AlignBottom, infotext);
 259         }
 260 }
 261
 262 void AnalogSignal::paint_grid(QPainter &p, int y, int left, int right)
 263 {
 264         p.setRenderHint(QPainter::Antialiasing, false);
 265
 266         if (pos_vdivs_ > 0) {
 267                 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
 268                 for (int i = 1; i <= pos_vdivs_; i++) {
 269                         const float dy = i * div_height_;
 270                         p.drawLine(QLineF(left, y - dy, right, y - dy));
 271                 }
 272
 273                 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
 274                 for (int i = 0; i < pos_vdivs_; i++) {
 275                         const float dy = i * div_height_;
 276                         const float dy25 = dy + (0.25 * div_height_);
 277                         const float dy50 = dy + (0.50 * div_height_);
 278                         const float dy75 = dy + (0.75 * div_height_);
 279                         p.drawLine(QLineF(left, y - dy25, right, y - dy25));
 280                         p.drawLine(QLineF(left, y - dy50, right, y - dy50));
 281                         p.drawLine(QLineF(left, y - dy75, right, y - dy75));
 282                 }
 283         }
 284
 285         if (neg_vdivs_ > 0) {
 286                 p.setPen(QPen(GridMajorColor, 1, Qt::DashLine));
 287                 for (int i = 1; i <= neg_vdivs_; i++) {
 288                         const float dy = i * div_height_;
 289                         p.drawLine(QLineF(left, y + dy, right, y + dy));
 290                 }
 291
 292                 p.setPen(QPen(GridMinorColor, 1, Qt::DashLine));
 293                 for (int i = 0; i < neg_vdivs_; i++) {
 294                         const float dy = i * div_height_;
 295                         const float dy25 = dy + (0.25 * div_height_);
 296                         const float dy50 = dy + (0.50 * div_height_);
 297                         const float dy75 = dy + (0.75 * div_height_);
 298                         p.drawLine(QLineF(left, y + dy25, right, y + dy25));
 299                         p.drawLine(QLineF(left, y + dy50, right, y + dy50));
 300                         p.drawLine(QLineF(left, y + dy75, right, y + dy75));
 301                 }
 302         }
 303
 304         p.setRenderHint(QPainter::Antialiasing, true);
 305 }
 306
 307 void AnalogSignal::paint_trace(QPainter &p,
 308         const shared_ptr<pv::data::AnalogSegment> &segment,
 309         int y, int left, const int64_t start, const int64_t end,
 310         const double pixels_offset, const double samples_per_pixel)
 311 {
 312         p.setPen(base_->colour());
 313
 314         const int64_t points_count = end - start;
 315
 316         QPointF *points = new QPointF[points_count];
 317         QPointF *point = points;
 318
 319         QRectF *const sampling_points = new QRectF[points_count];
 320         QRectF *sampling_point = sampling_points;
 321
 322         pv::data::SegmentAnalogDataIterator* it =
 323                 segment->begin_sample_iteration(start);
 324
 325         const int w = 2;
 326         for (int64_t sample = start; sample != end; sample++) {
 327                 const float x = (sample / samples_per_pixel -
 328                         pixels_offset) + left;
 329
 330                 *point++ = QPointF(x, y - *((float*)it->value) * scale_);
 331                 *sampling_point++ = QRectF(x - (w / 2), y - *((float*)it->value) * scale_ - (w / 2), w, w);
 332
 333                 segment->continue_sample_iteration(it, 1);
 334         }
 335         segment->end_sample_iteration(it);
 336
 337         p.drawPolyline(points, points_count);
 338
 339         // Paint the sampling points if enabled
 340         GlobalSettings settings;
 341         const bool show_sampling_points =
 342                 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();
 343
 344         if (show_sampling_points && (samples_per_pixel < 0.25)) {
 345                 p.setPen(SamplingPointColour);
 346                 p.drawRects(sampling_points, points_count);
 347         }
 348
 349         delete[] points;
 350         delete[] sampling_points;
 351 }
 352
 353 void AnalogSignal::paint_envelope(QPainter &p,
 354         const shared_ptr<pv::data::AnalogSegment> &segment,
 355         int y, int left, const int64_t start, const int64_t end,
 356         const double pixels_offset, const double samples_per_pixel)
 357 {
 358         using pv::data::AnalogSegment;
 359
 360         AnalogSegment::EnvelopeSection e;
 361         segment->get_envelope_section(e, start, end, samples_per_pixel);
 362
 363         if (e.length < 2)
 364                 return;
 365
 366         p.setPen(QPen(Qt::NoPen));
 367         p.setBrush(base_->colour());
 368
 369         QRectF *const rects = new QRectF[e.length];
 370         QRectF *rect = rects;
 371
 372         for (uint64_t sample = 0; sample < e.length - 1; sample++) {
 373                 const float x = ((e.scale * sample + e.start) /
 374                         samples_per_pixel - pixels_offset) + left;
 375                 const AnalogSegment::EnvelopeSample *const s =
 376                         e.samples + sample;
 377
 378                 // We overlap this sample with the next so that vertical
 379                 // gaps do not appear during steep rising or falling edges
 380                 const float b = y - max(s->max, (s + 1)->min) * scale_;
 381                 const float t = y - min(s->min, (s + 1)->max) * scale_;
 382
 383                 float h = b - t;
 384                 if (h >= 0.0f && h <= 1.0f)
 385                         h = 1.0f;
 386                 if (h <= 0.0f && h >= -1.0f)
 387                         h = -1.0f;
 388
 389                 *rect++ = QRectF(x, t, 1.0f, h);
 390         }
 391
 392         p.drawRects(rects, e.length);
 393
 394         delete[] rects;
 395         delete[] e.samples;
 396 }
 397
 398 void AnalogSignal::paint_logic_mid(QPainter &p, const ViewItemPaintParams &pp)
 399 {
 400         QLineF *line;
 401
 402         vector< pair<int64_t, bool> > edges;
 403
 404         assert(base_);
 405
 406         const int y = get_visual_y();
 407
 408         if (!base_->enabled())
 409                 return;
 410
 411         const int signal_margin =
 412                 QFontMetrics(QApplication::font()).height() / 2;
 413
 414         const int ph = min(pos_vdivs_, 1) * div_height_;
 415         const int nh = min(neg_vdivs_, 1) * div_height_;
 416         const float high_offset = y - ph + signal_margin + 0.5f;
 417         const float low_offset = y + nh - signal_margin - 0.5f;
 418
 419         const deque< shared_ptr<pv::data::LogicSegment> > &segments =
 420                 base_->logic_data()->logic_segments();
 421         if (segments.empty())
 422                 return;
 423
 424         const shared_ptr<pv::data::LogicSegment> &segment =
 425                 segments.front();
 426
 427         double samplerate = segment->samplerate();
 428
 429         // Show sample rate as 1Hz when it is unknown
 430         if (samplerate == 0.0)
 431                 samplerate = 1.0;
 432
 433         const double pixels_offset = pp.pixels_offset();
 434         const pv::util::Timestamp& start_time = segment->start_time();
 435         const int64_t last_sample = segment->get_sample_count() - 1;
 436         const double samples_per_pixel = samplerate * pp.scale();
 437         const pv::util::Timestamp start = samplerate * (pp.offset() - start_time);
 438         const pv::util::Timestamp end = start + samples_per_pixel * pp.width();
 439
 440         const int64_t start_sample = min(max(floor(start).convert_to<int64_t>(),
 441                 (int64_t)0), last_sample);
 442         const uint64_t end_sample = min(max(ceil(end).convert_to<int64_t>(),
 443                 (int64_t)0), last_sample);
 444
 445         segment->get_subsampled_edges(edges, start_sample, end_sample,
 446                 samples_per_pixel / LogicSignal::Oversampling, 0);
 447         assert(edges.size() >= 2);
 448
 449         // Paint the edges
 450         const unsigned int edge_count = edges.size() - 2;
 451         QLineF *const edge_lines = new QLineF[edge_count];
 452         line = edge_lines;
 453
 454         for (auto i = edges.cbegin() + 1; i != edges.cend() - 1; i++) {
 455                 const float x = ((*i).first / samples_per_pixel -
 456                         pixels_offset) + pp.left();
 457                 *line++ = QLineF(x, high_offset, x, low_offset);
 458         }
 459
 460         p.setPen(LogicSignal::EdgeColour);
 461         p.drawLines(edge_lines, edge_count);
 462         delete[] edge_lines;
 463
 464         // Paint the caps
 465         const unsigned int max_cap_line_count = edges.size();
 466         QLineF *const cap_lines = new QLineF[max_cap_line_count];
 467
 468         p.setPen(LogicSignal::HighColour);
 469         paint_logic_caps(p, cap_lines, edges, true, samples_per_pixel,
 470                 pixels_offset, pp.left(), high_offset);
 471         p.setPen(LogicSignal::LowColour);
 472         paint_logic_caps(p, cap_lines, edges, false, samples_per_pixel,
 473                 pixels_offset, pp.left(), low_offset);
 474
 475         delete[] cap_lines;
 476
 477         // Return if we don't need to paint the sampling points
 478         GlobalSettings settings;
 479         const bool show_sampling_points =
 480                 settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();
 481
 482         if (!show_sampling_points || (samples_per_pixel >= 0.25))
 483                 return;
 484
 485         // Paint the sampling points
 486         const uint64_t sampling_points_count = end_sample - start_sample + 1;
 487         QRectF *const sampling_points = new QRectF[sampling_points_count];
 488         QRectF *sampling_point = sampling_points;
 489
 490         const int w = 1;
 491         const float y_middle = high_offset - ((high_offset - low_offset) / 2);
 492         for (uint64_t i = start_sample; i < end_sample + 1; ++i) {
 493                 const float x = (i / samples_per_pixel - pixels_offset) + pp.left();
 494                 *sampling_point++ = QRectF(x - (w / 2), y_middle - (w / 2), w, w);
 495         }
 496
 497         p.setPen(SamplingPointColour);
 498         p.drawRects(sampling_points, sampling_points_count);
 499         delete[] sampling_points;
 500 }
 501
 502 void AnalogSignal::paint_logic_caps(QPainter &p, QLineF *const lines,
 503         vector< pair<int64_t, bool> > &edges, bool level,
 504         double samples_per_pixel, double pixels_offset, float x_offset,
 505         float y_offset)
 506 {
 507         QLineF *line = lines;
 508
 509         for (auto i = edges.begin(); i != (edges.end() - 1); i++)
 510                 if ((*i).second == level) {
 511                         *line++ = QLineF(
 512                                 ((*i).first / samples_per_pixel -
 513                                         pixels_offset) + x_offset, y_offset,
 514                                 ((*(i+1)).first / samples_per_pixel -
 515                                         pixels_offset) + x_offset, y_offset);
 516                 }
 517
 518         p.drawLines(lines, line - lines);
 519 }
 520
 521 float AnalogSignal::get_resolution(int scale_index)
 522 {
 523         const float seq[] = {1.0f, 2.0f, 5.0f};
 524
 525         const int offset = numeric_limits<int>::max() / (2 * countof(seq));
 526         const div_t d = div((int)(scale_index + countof(seq) * offset),
 527                 countof(seq));
 528
 529         return powf(10.0f, d.quot - offset) * seq[d.rem];
 530 }
 531
 532 void AnalogSignal::update_scale()
 533 {
 534         resolution_ = get_resolution(scale_index_);
 535         scale_ = div_height_ / resolution_;
 536 }
 537
 538 void AnalogSignal::update_conversion_type()
 539 {
 540         base_->set_conversion_type(conversion_type_);
 541
 542         if (owner_)
 543                 owner_->row_item_appearance_changed(false, true);
 544 }
 545
 546 void AnalogSignal::perform_autoranging(bool force_update)
 547 {
 548         const deque< shared_ptr<pv::data::AnalogSegment> > &segments =
 549                 base_->analog_data()->analog_segments();
 550
 551         if (segments.empty())
 552                 return;
 553
 554         static double prev_min = 0, prev_max = 0;
 555         double min = 0, max = 0;
 556
 557         for (shared_ptr<pv::data::AnalogSegment> segment : segments) {
 558                 pair<double, double> mm = segment->get_min_max();
 559                 min = std::min(min, mm.first);
 560                 max = std::max(max, mm.second);
 561         }
 562
 563         if ((min == prev_min) && (max == prev_max) && !force_update)
 564                 return;
 565
 566         prev_min = min;
 567         prev_max = max;
 568
 569         // Use all divs for the positive range if there are no negative values
 570         if ((min == 0) && (neg_vdivs_ > 0)) {
 571                 pos_vdivs_ += neg_vdivs_;
 572                 neg_vdivs_ = 0;
 573         }
 574
 575         // Split up the divs if there are negative values but no negative divs
 576         if ((min < 0) && (neg_vdivs_ == 0)) {
 577                 neg_vdivs_ = pos_vdivs_ / 2;
 578                 pos_vdivs_ -= neg_vdivs_;
 579         }
 580
 581         double min_value_per_div;
 582         if ((pos_vdivs_ > 0) && (neg_vdivs_ >  0))
 583                 min_value_per_div = std::max(max / pos_vdivs_, -min / neg_vdivs_);
 584         else if (pos_vdivs_ > 0)
 585                 min_value_per_div = max / pos_vdivs_;
 586         else
 587                 min_value_per_div = -min / neg_vdivs_;
 588
 589         // Find first scale value that is bigger than the value we need
 590         for (int i = MinScaleIndex; i < MaxScaleIndex; i++)
 591                 if (get_resolution(i) > min_value_per_div) {
 592                         scale_index_ = i;
 593                         break;
 594                 }
 595
 596         update_scale();
 597 }
 598
 599 void AnalogSignal::populate_popup_form(QWidget *parent, QFormLayout *form)
 600 {
 601         // Add the standard options
 602         Signal::populate_popup_form(parent, form);
 603
 604         QFormLayout *const layout = new QFormLayout;
 605
 606         // Add the number of vdivs
 607         QSpinBox *pvdiv_sb = new QSpinBox(parent);
 608         pvdiv_sb->setRange(0, MaximumVDivs);
 609         pvdiv_sb->setValue(pos_vdivs_);
 610         connect(pvdiv_sb, SIGNAL(valueChanged(int)),
 611                 this, SLOT(on_pos_vdivs_changed(int)));
 612         layout->addRow(tr("Number of pos vertical divs"), pvdiv_sb);
 613
 614         QSpinBox *nvdiv_sb = new QSpinBox(parent);
 615         nvdiv_sb->setRange(0, MaximumVDivs);
 616         nvdiv_sb->setValue(neg_vdivs_);
 617         connect(nvdiv_sb, SIGNAL(valueChanged(int)),
 618                 this, SLOT(on_neg_vdivs_changed(int)));
 619         layout->addRow(tr("Number of neg vertical divs"), nvdiv_sb);
 620
 621         // Add the vertical resolution
 622         resolution_cb_ = new QComboBox(parent);
 623
 624         for (int i = MinScaleIndex; i < MaxScaleIndex; i++) {
 625                 const QString label = QString("%1").arg(get_resolution(i));
 626                 resolution_cb_->insertItem(0, label, QVariant(i));
 627         }
 628
 629         int cur_idx = resolution_cb_->findData(QVariant(scale_index_));
 630         resolution_cb_->setCurrentIndex(cur_idx);
 631
 632         connect(resolution_cb_, SIGNAL(currentIndexChanged(int)),
 633                 this, SLOT(on_resolution_changed(int)));
 634
 635         QGridLayout *const vdiv_layout = new QGridLayout;
 636         QLabel *const vdiv_unit = new QLabel(tr("V/div"));
 637         vdiv_layout->addWidget(resolution_cb_, 0, 0);
 638         vdiv_layout->addWidget(vdiv_unit, 0, 1);
 639
 640         layout->addRow(tr("Vertical resolution"), vdiv_layout);
 641
 642         // Add the autoranging checkbox
 643         QCheckBox* autoranging_cb = new QCheckBox();
 644         autoranging_cb->setCheckState(autoranging_ ? Qt::Checked : Qt::Unchecked);
 645
 646         connect(autoranging_cb, SIGNAL(stateChanged(int)),
 647                 this, SLOT(on_autoranging_changed(int)));
 648
 649         layout->addRow(tr("Autoranging"), autoranging_cb);
 650
 651         // Add the conversion type dropdown
 652         conversion_cb_ = new QComboBox();
 653
 654         conversion_cb_->addItem("none", data::SignalBase::NoConversion);
 655         conversion_cb_->addItem("to logic via threshold", data::SignalBase::A2LConversionByTreshold);
 656         conversion_cb_->addItem("to logic via schmitt-trigger", data::SignalBase::A2LConversionBySchmittTrigger);
 657
 658         cur_idx = conversion_cb_->findData(QVariant(conversion_type_));
 659         conversion_cb_->setCurrentIndex(cur_idx);
 660
 661         layout->addRow(tr("Conversion"), conversion_cb_);
 662
 663         connect(conversion_cb_, SIGNAL(currentIndexChanged(int)),
 664                 this, SLOT(on_conversion_changed(int)));
 665
 666         // Add the display type dropdown
 667         display_type_cb_ = new QComboBox();
 668
 669         display_type_cb_->addItem(tr("Analog"), DisplayAnalog);
 670         display_type_cb_->addItem(tr("Converted"), DisplayConverted);
 671         display_type_cb_->addItem(tr("Both"), DisplayBoth);
 672
 673         cur_idx = display_type_cb_->findData(QVariant(display_type_));
 674         display_type_cb_->setCurrentIndex(cur_idx);
 675
 676         layout->addRow(tr("Traces to show:"), display_type_cb_);
 677
 678         connect(display_type_cb_, SIGNAL(currentIndexChanged(int)),
 679                 this, SLOT(on_display_type_changed(int)));
 680
 681         form->addRow(layout);
 682 }
 683
 684 void AnalogSignal::on_samples_added()
 685 {
 686         perform_autoranging();
 687
 688         if (owner_) {
 689                 // Call order is important, otherwise the lazy event handler won't work
 690                 owner_->extents_changed(false, true);
 691                 owner_->row_item_appearance_changed(false, true);
 692         }
 693 }
 694
 695 void AnalogSignal::on_pos_vdivs_changed(int vdivs)
 696 {
 697         pos_vdivs_ = vdivs;
 698
 699         if (autoranging_)
 700                 perform_autoranging(true);
 701
 702         if (owner_) {
 703                 // Call order is important, otherwise the lazy event handler won't work
 704                 owner_->extents_changed(false, true);
 705                 owner_->row_item_appearance_changed(false, true);
 706         }
 707 }
 708
 709 void AnalogSignal::on_neg_vdivs_changed(int vdivs)
 710 {
 711         neg_vdivs_ = vdivs;
 712
 713         if (autoranging_)
 714                 perform_autoranging(true);
 715
 716         if (owner_) {
 717                 // Call order is important, otherwise the lazy event handler won't work
 718                 owner_->extents_changed(false, true);
 719                 owner_->row_item_appearance_changed(false, true);
 720         }
 721 }
 722
 723 void AnalogSignal::on_resolution_changed(int index)
 724 {
 725         scale_index_ = resolution_cb_->itemData(index).toInt();
 726         update_scale();
 727
 728         if (owner_)
 729                 owner_->row_item_appearance_changed(false, true);
 730 }
 731
 732 void AnalogSignal::on_autoranging_changed(int state)
 733 {
 734         autoranging_ = (state == Qt::Checked);
 735
 736         if (autoranging_)
 737                 perform_autoranging(true);
 738
 739         if (owner_) {
 740                 // Call order is important, otherwise the lazy event handler won't work
 741                 owner_->extents_changed(false, true);
 742                 owner_->row_item_appearance_changed(false, true);
 743         }
 744 }
 745
 746 void AnalogSignal::on_conversion_changed(int index)
 747 {
 748         data::SignalBase::ConversionType old_conv_type = conversion_type_;
 749
 750         conversion_type_ = (data::SignalBase::ConversionType)(conversion_cb_->itemData(index).toInt());
 751
 752         if (conversion_type_ != old_conv_type) {
 753                 base_->set_conversion_type(conversion_type_);
 754                 update_conversion_type();
 755         }
 756 }
 757
 758 void AnalogSignal::on_display_type_changed(int index)
 759 {
 760         display_type_ = (DisplayType)(display_type_cb_->itemData(index).toInt());
 761
 762         if (owner_)
 763                 owner_->row_item_appearance_changed(false, true);
 764 }
 765
 766 } // namespace TraceView
 767 } // namespace views
 768 } // namespace pv