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