pv/view/decodetrace.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, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  */
  20
  21 extern "C" {
  22 #include <libsigrokdecode/libsigrokdecode.h>
  23 }
  24
  25 #include <extdef.h>
  26
  27 #include <boost/functional/hash.hpp>
  28
  29 #include <QAction>
  30 #include <QApplication>
  31 #include <QComboBox>
  32 #include <QFormLayout>
  33 #include <QLabel>
  34 #include <QMenu>
  35 #include <QPushButton>
  36 #include <QToolTip>
  37
  38 #include "decodetrace.h"
  39
  40 #include <pv/sigsession.h>
  41 #include <pv/data/decoderstack.h>
  42 #include <pv/data/decode/decoder.h>
  43 #include <pv/data/logic.h>
  44 #include <pv/data/logicsnapshot.h>
  45 #include <pv/data/decode/annotation.h>
  46 #include <pv/view/logicsignal.h>
  47 #include <pv/view/view.h>
  48 #include <pv/view/viewport.h>
  49 #include <pv/widgets/decodergroupbox.h>
  50 #include <pv/widgets/decodermenu.h>
  51
  52 using std::dynamic_pointer_cast;
  53 using std::list;
  54 using std::make_pair;
  55 using std::max;
  56 using std::map;
  57 using std::min;
  58 using std::pair;
  59 using std::shared_ptr;
  60 using std::vector;
  61
  62 namespace pv {
  63 namespace view {
  64
  65 const QColor DecodeTrace::DecodeColours[4] = {
  66         QColor(0xEF, 0x29, 0x29),       // Red
  67         QColor(0xFC, 0xE9, 0x4F),       // Yellow
  68         QColor(0x8A, 0xE2, 0x34),       // Green
  69         QColor(0x72, 0x9F, 0xCF)        // Blue
  70 };
  71
  72 const QColor DecodeTrace::ErrorBgColour = QColor(0xEF, 0x29, 0x29);
  73 const QColor DecodeTrace::NoDecodeColour = QColor(0x88, 0x8A, 0x85);
  74
  75 const int DecodeTrace::ArrowSize = 4;
  76 const double DecodeTrace::EndCapWidth = 5;
  77 const int DecodeTrace::DrawPadding = 100;
  78
  79 const QColor DecodeTrace::Colours[16] = {
  80         QColor(0xEF, 0x29, 0x29),
  81         QColor(0xF6, 0x6A, 0x32),
  82         QColor(0xFC, 0xAE, 0x3E),
  83         QColor(0xFB, 0xCA, 0x47),
  84         QColor(0xFC, 0xE9, 0x4F),
  85         QColor(0xCD, 0xF0, 0x40),
  86         QColor(0x8A, 0xE2, 0x34),
  87         QColor(0x4E, 0xDC, 0x44),
  88         QColor(0x55, 0xD7, 0x95),
  89         QColor(0x64, 0xD1, 0xD2),
  90         QColor(0x72, 0x9F, 0xCF),
  91         QColor(0xD4, 0x76, 0xC4),
  92         QColor(0x9D, 0x79, 0xB9),
  93         QColor(0xAD, 0x7F, 0xA8),
  94         QColor(0xC2, 0x62, 0x9B),
  95         QColor(0xD7, 0x47, 0x6F)
  96 };
  97
  98 const QColor DecodeTrace::OutlineColours[16] = {
  99         QColor(0x77, 0x14, 0x14),
 100         QColor(0x7B, 0x35, 0x19),
 101         QColor(0x7E, 0x57, 0x1F),
 102         QColor(0x7D, 0x65, 0x23),
 103         QColor(0x7E, 0x74, 0x27),
 104         QColor(0x66, 0x78, 0x20),
 105         QColor(0x45, 0x71, 0x1A),
 106         QColor(0x27, 0x6E, 0x22),
 107         QColor(0x2A, 0x6B, 0x4A),
 108         QColor(0x32, 0x68, 0x69),
 109         QColor(0x39, 0x4F, 0x67),
 110         QColor(0x6A, 0x3B, 0x62),
 111         QColor(0x4E, 0x3C, 0x5C),
 112         QColor(0x56, 0x3F, 0x54),
 113         QColor(0x61, 0x31, 0x4D),
 114         QColor(0x6B, 0x23, 0x37)
 115 };
 116
 117 DecodeTrace::DecodeTrace(pv::SigSession &session,
 118         std::shared_ptr<pv::data::DecoderStack> decoder_stack, int index) :
 119         Trace(QString::fromUtf8(
 120                 decoder_stack->stack().front()->decoder()->name)),
 121         _session(session),
 122         _decoder_stack(decoder_stack),
 123         _text_height(0),
 124         _row_height(0),
 125         _delete_mapper(this),
 126         _show_hide_mapper(this)
 127 {
 128         assert(_decoder_stack);
 129
 130         _colour = DecodeColours[index % countof(DecodeColours)];
 131
 132         connect(_decoder_stack.get(), SIGNAL(new_decode_data()),
 133                 this, SLOT(on_new_decode_data()));
 134         connect(&_delete_mapper, SIGNAL(mapped(int)),
 135                 this, SLOT(on_delete_decoder(int)));
 136         connect(&_show_hide_mapper, SIGNAL(mapped(int)),
 137                 this, SLOT(on_show_hide_decoder(int)));
 138 }
 139
 140 bool DecodeTrace::enabled() const
 141 {
 142         return true;
 143 }
 144
 145 const std::shared_ptr<pv::data::DecoderStack>& DecodeTrace::decoder() const
 146 {
 147         return _decoder_stack;
 148 }
 149
 150 void DecodeTrace::set_view(pv::view::View *view)
 151 {
 152         assert(view);
 153         Trace::set_view(view);
 154 }
 155
 156 void DecodeTrace::paint_back(QPainter &p, int left, int right)
 157 {
 158         Trace::paint_back(p, left, right);
 159         paint_axis(p, get_y(), left, right);
 160 }
 161
 162 void DecodeTrace::paint_mid(QPainter &p, int left, int right)
 163 {
 164         using namespace pv::data::decode;
 165
 166         QFontMetrics m(QApplication::font());
 167         _text_height = m.boundingRect(QRect(), 0, "Tg").height();
 168         _row_height = (_text_height * 6) / 4;
 169         const int annotation_height = (_text_height * 5) / 4;
 170
 171         assert(_decoder_stack);
 172         const QString err = _decoder_stack->error_message();
 173         if (!err.isEmpty())
 174         {
 175                 draw_unresolved_period(p, annotation_height, left, right);
 176                 draw_error(p, err, left, right);
 177                 return;
 178         }
 179
 180         // Iterate through the rows
 181         assert(_view);
 182         int y = get_y();
 183         pair<uint64_t, uint64_t> sample_range = get_sample_range(left, right);
 184
 185         assert(_decoder_stack);
 186         const vector<Row> rows(_decoder_stack->get_visible_rows());
 187
 188         _visible_rows.clear();
 189         for (size_t i = 0; i < rows.size(); i++)
 190         {
 191                 const Row &row = rows[i];
 192
 193                 size_t base_colour = 0x13579BDF;
 194                 boost::hash_combine(base_colour, this);
 195                 boost::hash_combine(base_colour, row.decoder());
 196                 boost::hash_combine(base_colour, row.row());
 197                 base_colour >>= 16;
 198
 199                 vector<Annotation> annotations;
 200                 _decoder_stack->get_annotation_subset(annotations, row,
 201                         sample_range.first, sample_range.second);
 202                 if (!annotations.empty()) {
 203                         for (const Annotation &a : annotations)
 204                                 draw_annotation(a, p, get_text_colour(),
 205                                         annotation_height, left, right, y,
 206                                         base_colour);
 207                         y += _row_height;
 208
 209                         _visible_rows.push_back(rows[i]);
 210                 }
 211         }
 212
 213         // Draw the hatching
 214         draw_unresolved_period(p, annotation_height, left, right);
 215 }
 216
 217 void DecodeTrace::paint_fore(QPainter &p, int left, int right)
 218 {
 219         using namespace pv::data::decode;
 220
 221         (void)right;
 222
 223         assert(_row_height);
 224
 225         for (size_t i = 0; i < _visible_rows.size(); i++)
 226         {
 227                 const int y = i * _row_height + get_y();
 228
 229                 p.setPen(QPen(Qt::NoPen));
 230                 p.setBrush(QApplication::palette().brush(QPalette::WindowText));
 231
 232                 if (i != 0)
 233                 {
 234                         const QPointF points[] = {
 235                                 QPointF(left, y - ArrowSize),
 236                                 QPointF(left + ArrowSize, y),
 237                                 QPointF(left, y + ArrowSize)
 238                         };
 239                         p.drawPolygon(points, countof(points));
 240                 }
 241
 242                 const QRect r(left + ArrowSize * 2, y - _row_height / 2,
 243                         right - left, _row_height);
 244                 const QString h(_visible_rows[i].title());
 245                 const int f = Qt::AlignLeft | Qt::AlignVCenter |
 246                         Qt::TextDontClip;
 247
 248                 // Draw the outline
 249                 p.setPen(QApplication::palette().color(QPalette::Base));
 250                 for (int dx = -1; dx <= 1; dx++)
 251                         for (int dy = -1; dy <= 1; dy++)
 252                                 if (dx != 0 && dy != 0)
 253                                         p.drawText(r.translated(dx, dy), f, h);
 254
 255                 // Draw the text
 256                 p.setPen(QApplication::palette().color(QPalette::WindowText));
 257                 p.drawText(r, f, h);
 258         }
 259 }
 260
 261 void DecodeTrace::populate_popup_form(QWidget *parent, QFormLayout *form)
 262 {
 263         using pv::data::decode::Decoder;
 264
 265         assert(form);
 266         assert(parent);
 267         assert(_decoder_stack);
 268
 269         // Add the standard options
 270         Trace::populate_popup_form(parent, form);
 271
 272         // Add the decoder options
 273         _bindings.clear();
 274         _channel_selectors.clear();
 275         _decoder_forms.clear();
 276
 277         const list< shared_ptr<Decoder> >& stack = _decoder_stack->stack();
 278
 279         if (stack.empty())
 280         {
 281                 QLabel *const l = new QLabel(
 282                         tr("<p><i>No decoders in the stack</i></p>"));
 283                 l->setAlignment(Qt::AlignCenter);
 284                 form->addRow(l);
 285         }
 286         else
 287         {
 288                 auto iter = stack.cbegin();
 289                 for (int i = 0; i < (int)stack.size(); i++, iter++) {
 290                         shared_ptr<Decoder> dec(*iter);
 291                         create_decoder_form(i, dec, parent, form);
 292                 }
 293
 294                 form->addRow(new QLabel(
 295                         tr("<i>* Required channels</i>"), parent));
 296         }
 297
 298         // Add stacking button
 299         pv::widgets::DecoderMenu *const decoder_menu =
 300                 new pv::widgets::DecoderMenu(parent);
 301         connect(decoder_menu, SIGNAL(decoder_selected(srd_decoder*)),
 302                 this, SLOT(on_stack_decoder(srd_decoder*)));
 303
 304         QPushButton *const stack_button =
 305                 new QPushButton(tr("Stack Decoder"), parent);
 306         stack_button->setMenu(decoder_menu);
 307
 308         QHBoxLayout *stack_button_box = new QHBoxLayout;
 309         stack_button_box->addWidget(stack_button, 0, Qt::AlignRight);
 310         form->addRow(stack_button_box);
 311 }
 312
 313 QMenu* DecodeTrace::create_context_menu(QWidget *parent)
 314 {
 315         QMenu *const menu = Trace::create_context_menu(parent);
 316
 317         menu->addSeparator();
 318
 319         QAction *const del = new QAction(tr("Delete"), this);
 320         del->setShortcuts(QKeySequence::Delete);
 321         connect(del, SIGNAL(triggered()), this, SLOT(on_delete()));
 322         menu->addAction(del);
 323
 324         return menu;
 325 }
 326
 327 void DecodeTrace::draw_annotation(const pv::data::decode::Annotation &a,
 328         QPainter &p, QColor text_color, int h, int left, int right, int y,
 329         size_t base_colour) const
 330 {
 331         const double samples_per_pixel = get_samples_per_pixel();
 332         const double pixels_offset = get_pixels_offset();
 333
 334         const double start = a.start_sample() / samples_per_pixel -
 335                 pixels_offset;
 336         const double end = a.end_sample() / samples_per_pixel -
 337                 pixels_offset;
 338
 339         const size_t colour = (base_colour + a.format()) % countof(Colours);
 340         const QColor &fill = Colours[colour];
 341         const QColor &outline = OutlineColours[colour];
 342
 343         if (start > right + DrawPadding || end < left - DrawPadding)
 344                 return;
 345
 346         if (a.start_sample() == a.end_sample())
 347                 draw_instant(a, p, fill, outline, text_color, h,
 348                         start, y);
 349         else
 350                 draw_range(a, p, fill, outline, text_color, h,
 351                         start, end, y);
 352 }
 353
 354 void DecodeTrace::draw_instant(const pv::data::decode::Annotation &a, QPainter &p,
 355         QColor fill, QColor outline, QColor text_color, int h, double x, int y) const
 356 {
 357         const QString text = a.annotations().empty() ?
 358                 QString() : a.annotations().back();
 359         const double w = min((double)p.boundingRect(QRectF(), 0, text).width(),
 360                 0.0) + h;
 361         const QRectF rect(x - w / 2, y - h / 2, w, h);
 362
 363         p.setPen(outline);
 364         p.setBrush(fill);
 365         p.drawRoundedRect(rect, h / 2, h / 2);
 366
 367         p.setPen(text_color);
 368         p.drawText(rect, Qt::AlignCenter | Qt::AlignVCenter, text);
 369 }
 370
 371 void DecodeTrace::draw_range(const pv::data::decode::Annotation &a, QPainter &p,
 372         QColor fill, QColor outline, QColor text_color, int h, double start,
 373         double end, int y) const
 374 {
 375         const double top = y + .5 - h / 2;
 376         const double bottom = y + .5 + h / 2;
 377         const vector<QString> annotations = a.annotations();
 378
 379         p.setPen(outline);
 380         p.setBrush(fill);
 381
 382         // If the two ends are within 1 pixel, draw a vertical line
 383         if (start + 1.0 > end)
 384         {
 385                 p.drawLine(QPointF(start, top), QPointF(start, bottom));
 386                 return;
 387         }
 388
 389         const double cap_width = min((end - start) / 4, EndCapWidth);
 390
 391         QPointF pts[] = {
 392                 QPointF(start, y + .5f),
 393                 QPointF(start + cap_width, top),
 394                 QPointF(end - cap_width, top),
 395                 QPointF(end, y + .5f),
 396                 QPointF(end - cap_width, bottom),
 397                 QPointF(start + cap_width, bottom)
 398         };
 399
 400         p.drawConvexPolygon(pts, countof(pts));
 401
 402         if (annotations.empty())
 403                 return;
 404
 405         QRectF rect(start + cap_width, y - h / 2,
 406                 end - start - cap_width * 2, h);
 407         if (rect.width() <= 4)
 408                 return;
 409
 410         p.setPen(text_color);
 411
 412         // Try to find an annotation that will fit
 413         QString best_annotation;
 414         int best_width = 0;
 415
 416         for (const QString &a : annotations) {
 417                 const int w = p.boundingRect(QRectF(), 0, a).width();
 418                 if (w <= rect.width() && w > best_width)
 419                         best_annotation = a, best_width = w;
 420         }
 421
 422         if (best_annotation.isEmpty())
 423                 best_annotation = annotations.back();
 424
 425         // If not ellide the last in the list
 426         p.drawText(rect, Qt::AlignCenter, p.fontMetrics().elidedText(
 427                 best_annotation, Qt::ElideRight, rect.width()));
 428 }
 429
 430 void DecodeTrace::draw_error(QPainter &p, const QString &message,
 431         int left, int right)
 432 {
 433         const int y = get_y();
 434
 435         p.setPen(ErrorBgColour.darker());
 436         p.setBrush(ErrorBgColour);
 437
 438         const QRectF bounding_rect =
 439                 QRectF(left, INT_MIN / 2 + y, right - left, INT_MAX);
 440         const QRectF text_rect = p.boundingRect(bounding_rect,
 441                 Qt::AlignCenter, message);
 442         const float r = text_rect.height() / 4;
 443
 444         p.drawRoundedRect(text_rect.adjusted(-r, -r, r, r), r, r,
 445                 Qt::AbsoluteSize);
 446
 447         p.setPen(get_text_colour());
 448         p.drawText(text_rect, message);
 449 }
 450
 451 void DecodeTrace::draw_unresolved_period(QPainter &p, int h, int left,
 452         int right) const
 453 {
 454         using namespace pv::data;
 455         using pv::data::decode::Decoder;
 456
 457         assert(_decoder_stack);
 458
 459         shared_ptr<Logic> data;
 460         shared_ptr<LogicSignal> logic_signal;
 461
 462         const list< shared_ptr<Decoder> > &stack = _decoder_stack->stack();
 463
 464         // We get the logic data of the first channel in the list.
 465         // This works because we are currently assuming all
 466         // LogicSignals have the same data/snapshot
 467         for (const shared_ptr<Decoder> &dec : stack)
 468                 if (dec && !dec->channels().empty() &&
 469                         ((logic_signal = (*dec->channels().begin()).second)) &&
 470                         ((data = logic_signal->logic_data())))
 471                         break;
 472
 473         if (!data || data->get_snapshots().empty())
 474                 return;
 475
 476         const shared_ptr<LogicSnapshot> snapshot =
 477                 data->get_snapshots().front();
 478         assert(snapshot);
 479         const int64_t sample_count = (int64_t)snapshot->get_sample_count();
 480         if (sample_count == 0)
 481                 return;
 482
 483         const int64_t samples_decoded = _decoder_stack->samples_decoded();
 484         if (sample_count == samples_decoded)
 485                 return;
 486
 487         const int y = get_y();
 488
 489         const double samples_per_pixel = get_samples_per_pixel();
 490         const double pixels_offset = get_pixels_offset();
 491
 492         const double start = max(samples_decoded /
 493                 samples_per_pixel - pixels_offset, left - 1.0);
 494         const double end = min(sample_count / samples_per_pixel -
 495                 pixels_offset, right + 1.0);
 496         const QRectF no_decode_rect(start, y - h/2 + 0.5, end - start, h);
 497
 498         p.setPen(QPen(Qt::NoPen));
 499         p.setBrush(Qt::white);
 500         p.drawRect(no_decode_rect);
 501
 502         p.setPen(NoDecodeColour);
 503         p.setBrush(QBrush(NoDecodeColour, Qt::Dense6Pattern));
 504         p.drawRect(no_decode_rect);
 505 }
 506
 507 double DecodeTrace::get_pixels_offset() const
 508 {
 509         assert(_view);
 510         assert(_decoder_stack);
 511
 512         const double scale = _view->scale();
 513         assert(scale > 0);
 514
 515         return (_view->offset() - _decoder_stack->get_start_time()) / scale;
 516 }
 517
 518 double DecodeTrace::get_samples_per_pixel() const
 519 {
 520         assert(_view);
 521         assert(_decoder_stack);
 522
 523         const double scale = _view->scale();
 524         assert(scale > 0);
 525
 526         double samplerate = _decoder_stack->samplerate();
 527
 528         // Show sample rate as 1Hz when it is unknown
 529         if (samplerate == 0.0)
 530                 samplerate = 1.0;
 531
 532         return samplerate * scale;
 533 }
 534
 535 pair<uint64_t, uint64_t> DecodeTrace::get_sample_range(
 536         int x_start, int x_end) const
 537 {
 538         const double samples_per_pixel = get_samples_per_pixel();
 539         const double pixels_offset = get_pixels_offset();
 540
 541         const uint64_t start = (uint64_t)max(
 542                 (x_start + pixels_offset) * samples_per_pixel, 0.0);
 543         const uint64_t end = (uint64_t)max(
 544                 (x_end + pixels_offset) * samples_per_pixel, 0.0);
 545
 546         return make_pair(start, end);
 547 }
 548
 549 int DecodeTrace::get_row_at_point(const QPoint &point)
 550 {
 551         if (!_row_height)
 552                 return -1;
 553
 554         const int row = (point.y() - get_y() + _row_height / 2) / _row_height;
 555         if (row < 0 || row >= (int)_visible_rows.size())
 556                 return -1;
 557
 558         return row;
 559 }
 560
 561 const QString DecodeTrace::get_annotation_at_point(const QPoint &point)
 562 {
 563         using namespace pv::data::decode;
 564
 565         if (!enabled())
 566                 return QString();
 567
 568         const pair<uint64_t, uint64_t> sample_range =
 569                 get_sample_range(point.x(), point.x() + 1);
 570         const int row = get_row_at_point(point);
 571         if (row < 0)
 572                 return QString();
 573
 574         vector<pv::data::decode::Annotation> annotations;
 575
 576         assert(_decoder_stack);
 577         _decoder_stack->get_annotation_subset(annotations, _visible_rows[row],
 578                 sample_range.first, sample_range.second);
 579
 580         return (annotations.empty()) ?
 581                 QString() : annotations[0].annotations().front();
 582 }
 583
 584 void DecodeTrace::hide_hover_annotation()
 585 {
 586         QToolTip::hideText();
 587 }
 588
 589 void DecodeTrace::hover_point_changed()
 590 {
 591         QPoint hp = _view->hover_point();
 592         QString ann = get_annotation_at_point(hp);
 593
 594         assert(_view);
 595         assert(_row_height);
 596
 597         if (ann.isEmpty()) {
 598                 hide_hover_annotation();
 599                 return;
 600         }
 601
 602         const int hover_row = get_row_at_point(hp);
 603
 604         QFontMetrics m(QToolTip::font());
 605         const QRect text_size = m.boundingRect(QRect(), 0, ann);
 606
 607         // This is OS-specific and unfortunately we can't query it, so
 608         // use an approximation to at least try to minimize the error.
 609         const int padding = 8;
 610
 611         // Make sure the tool tip doesn't overlap with the mouse cursor.
 612         // If it did, the tool tip would constantly hide and re-appear.
 613         // We also push it up by one row so that it appears above the
 614         // decode trace, not below.
 615         hp.setX(hp.x() - (text_size.width() / 2) - padding);
 616
 617         hp.setY(get_y() - (_row_height / 2) + (hover_row * _row_height)
 618                 - _row_height - text_size.height());
 619
 620         QToolTip::showText(_view->viewport()->mapToGlobal(hp), ann);
 621 }
 622
 623 void DecodeTrace::create_decoder_form(int index,
 624         shared_ptr<data::decode::Decoder> &dec, QWidget *parent,
 625         QFormLayout *form)
 626 {
 627         const GSList *l;
 628
 629         assert(dec);
 630         const srd_decoder *const decoder = dec->decoder();
 631         assert(decoder);
 632
 633         pv::widgets::DecoderGroupBox *const group =
 634                 new pv::widgets::DecoderGroupBox(
 635                         QString::fromUtf8(decoder->name));
 636         group->set_decoder_visible(dec->shown());
 637
 638         _delete_mapper.setMapping(group, index);
 639         connect(group, SIGNAL(delete_decoder()), &_delete_mapper, SLOT(map()));
 640
 641         _show_hide_mapper.setMapping(group, index);
 642         connect(group, SIGNAL(show_hide_decoder()),
 643                 &_show_hide_mapper, SLOT(map()));
 644
 645         QFormLayout *const decoder_form = new QFormLayout;
 646         group->add_layout(decoder_form);
 647
 648         // Add the mandatory channels
 649         for(l = decoder->channels; l; l = l->next) {
 650                 const struct srd_channel *const pdch =
 651                         (struct srd_channel *)l->data;
 652                 QComboBox *const combo = create_channel_selector(parent, dec, pdch);
 653                 connect(combo, SIGNAL(currentIndexChanged(int)),
 654                         this, SLOT(on_channel_selected(int)));
 655                 decoder_form->addRow(tr("<b>%1</b> (%2) *")
 656                         .arg(QString::fromUtf8(pdch->name))
 657                         .arg(QString::fromUtf8(pdch->desc)), combo);
 658
 659                 const ChannelSelector s = {combo, dec, pdch};
 660                 _channel_selectors.push_back(s);
 661         }
 662
 663         // Add the optional channels
 664         for(l = decoder->opt_channels; l; l = l->next) {
 665                 const struct srd_channel *const pdch =
 666                         (struct srd_channel *)l->data;
 667                 QComboBox *const combo = create_channel_selector(parent, dec, pdch);
 668                 connect(combo, SIGNAL(currentIndexChanged(int)),
 669                         this, SLOT(on_channel_selected(int)));
 670                 decoder_form->addRow(tr("<b>%1</b> (%2)")
 671                         .arg(QString::fromUtf8(pdch->name))
 672                         .arg(QString::fromUtf8(pdch->desc)), combo);
 673
 674                 const ChannelSelector s = {combo, dec, pdch};
 675                 _channel_selectors.push_back(s);
 676         }
 677
 678         // Add the options
 679         shared_ptr<prop::binding::DecoderOptions> binding(
 680                 new prop::binding::DecoderOptions(_decoder_stack, dec));
 681         binding->add_properties_to_form(decoder_form, true);
 682
 683         _bindings.push_back(binding);
 684
 685         form->addRow(group);
 686         _decoder_forms.push_back(group);
 687 }
 688
 689 QComboBox* DecodeTrace::create_channel_selector(
 690         QWidget *parent, const shared_ptr<data::decode::Decoder> &dec,
 691         const srd_channel *const pdch)
 692 {
 693         assert(dec);
 694
 695         const vector< shared_ptr<Signal> > sigs = _session.get_signals();
 696
 697         assert(_decoder_stack);
 698         const auto channel_iter = dec->channels().find(pdch);
 699
 700         QComboBox *selector = new QComboBox(parent);
 701
 702         selector->addItem("-", qVariantFromValue((void*)NULL));
 703
 704         if (channel_iter == dec->channels().end())
 705                 selector->setCurrentIndex(0);
 706
 707         for(size_t i = 0; i < sigs.size(); i++) {
 708                 const shared_ptr<view::Signal> s(sigs[i]);
 709                 assert(s);
 710
 711                 if (dynamic_pointer_cast<LogicSignal>(s) && s->enabled())
 712                 {
 713                         selector->addItem(s->get_name(),
 714                                 qVariantFromValue((void*)s.get()));
 715                         if ((*channel_iter).second == s)
 716                                 selector->setCurrentIndex(i + 1);
 717                 }
 718         }
 719
 720         return selector;
 721 }
 722
 723 void DecodeTrace::commit_decoder_channels(shared_ptr<data::decode::Decoder> &dec)
 724 {
 725         assert(dec);
 726
 727         map<const srd_channel*, shared_ptr<LogicSignal> > channel_map;
 728         const vector< shared_ptr<Signal> > sigs = _session.get_signals();
 729
 730         for (const ChannelSelector &s : _channel_selectors)
 731         {
 732                 if(s._decoder != dec)
 733                         break;
 734
 735                 const LogicSignal *const selection =
 736                         (LogicSignal*)s._combo->itemData(
 737                                 s._combo->currentIndex()).value<void*>();
 738
 739                 for (shared_ptr<Signal> sig : sigs)
 740                         if(sig.get() == selection) {
 741                                 channel_map[s._pdch] =
 742                                         dynamic_pointer_cast<LogicSignal>(sig);
 743                                 break;
 744                         }
 745         }
 746
 747         dec->set_channels(channel_map);
 748 }
 749
 750 void DecodeTrace::commit_channels()
 751 {
 752         assert(_decoder_stack);
 753         for (shared_ptr<data::decode::Decoder> dec : _decoder_stack->stack())
 754                 commit_decoder_channels(dec);
 755
 756         _decoder_stack->begin_decode();
 757 }
 758
 759 void DecodeTrace::on_new_decode_data()
 760 {
 761         if (_view)
 762                 _view->update_viewport();
 763 }
 764
 765 void DecodeTrace::delete_pressed()
 766 {
 767         on_delete();
 768 }
 769
 770 void DecodeTrace::on_delete()
 771 {
 772         _session.remove_decode_signal(this);
 773 }
 774
 775 void DecodeTrace::on_channel_selected(int)
 776 {
 777         commit_channels();
 778 }
 779
 780 void DecodeTrace::on_stack_decoder(srd_decoder *decoder)
 781 {
 782         assert(decoder);
 783         assert(_decoder_stack);
 784         _decoder_stack->push(shared_ptr<data::decode::Decoder>(
 785                 new data::decode::Decoder(decoder)));
 786         _decoder_stack->begin_decode();
 787
 788         create_popup_form();
 789 }
 790
 791 void DecodeTrace::on_delete_decoder(int index)
 792 {
 793         _decoder_stack->remove(index);
 794
 795         // Update the popup
 796         create_popup_form();
 797
 798         _decoder_stack->begin_decode();
 799 }
 800
 801 void DecodeTrace::on_show_hide_decoder(int index)
 802 {
 803         using pv::data::decode::Decoder;
 804
 805         const list< shared_ptr<Decoder> > stack(_decoder_stack->stack());
 806
 807         // Find the decoder in the stack
 808         auto iter = stack.cbegin();
 809         for(int i = 0; i < index; i++, iter++)
 810                 assert(iter != stack.end());
 811
 812         shared_ptr<Decoder> dec = *iter;
 813         assert(dec);
 814
 815         const bool show = !dec->shown();
 816         dec->show(show);
 817
 818         assert(index < (int)_decoder_forms.size());
 819         _decoder_forms[index]->set_decoder_visible(show);
 820
 821         _view->update_viewport();
 822 }
 823
 824 } // namespace view
 825 } // namespace pv