pv/views/tabular_decoder/view.cpp

   1 /*
   2  * This file is part of the PulseView project.
   3  *
   4  * Copyright (C) 2020 Soeren Apel <soeren@apelpie.net>
   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 <climits>
  21
  22 #include <QApplication>
  23 #include <QDebug>
  24 #include <QFileDialog>
  25 #include <QFontMetrics>
  26 #include <QHeaderView>
  27 #include <QLabel>
  28 #include <QMenu>
  29 #include <QMessageBox>
  30 #include <QToolBar>
  31 #include <QVBoxLayout>
  32
  33 #include <libsigrokdecode/libsigrokdecode.h>
  34
  35 #include "view.hpp"
  36
  37 #include "pv/globalsettings.hpp"
  38 #include "pv/session.hpp"
  39 #include "pv/util.hpp"
  40 #include "pv/data/decode/decoder.hpp"
  41
  42 using pv::data::DecodeSignal;
  43 using pv::data::SignalBase;
  44 using pv::data::decode::Decoder;
  45 using pv::util::Timestamp;
  46
  47 using std::make_shared;
  48 using std::max;
  49 using std::shared_ptr;
  50
  51 namespace pv {
  52 namespace views {
  53 namespace tabular_decoder {
  54
  55 const char* SaveTypeNames[SaveTypeCount] = {
  56         "CSV, commas escaped",
  57         "CSV, fields quoted"
  58 };
  59
  60 const char* ViewModeNames[ViewModeCount] = {
  61         "Show all",
  62         "Show all and focus on newest",
  63         "Show visible in main view"
  64 };
  65
  66
  67 CustomFilterProxyModel::CustomFilterProxyModel(QObject* parent) :
  68         QSortFilterProxyModel(parent)
  69 {
  70 }
  71
  72 bool CustomFilterProxyModel::filterAcceptsRow(int sourceRow,
  73         const QModelIndex &sourceParent) const
  74 {
  75         (void)sourceParent;
  76         assert(sourceModel() != nullptr);
  77
  78         const QModelIndex ann_start_sample_idx = sourceModel()->index(sourceRow, 0);
  79         const uint64_t ann_start_sample =
  80                 sourceModel()->data(ann_start_sample_idx, Qt::DisplayRole).toULongLong();
  81
  82         const QModelIndex ann_end_sample_idx = sourceModel()->index(sourceRow, 6);
  83         const uint64_t ann_end_sample =
  84                 sourceModel()->data(ann_end_sample_idx, Qt::DisplayRole).toULongLong();
  85
  86         // We consider all annotations as visible that either
  87         // a) begin to the left of the range and end within the range or
  88         // b) begin and end within the range or
  89         // c) begin within the range and end to the right of the range
  90         // ...which is equivalent to the negation of "begins and ends outside the range"
  91
  92         const bool left_of_range = (ann_end_sample < range_start_sample_);
  93         const bool right_of_range = (ann_start_sample > range_end_sample_);
  94         const bool entirely_outside_of_range = left_of_range || right_of_range;
  95
  96         return !entirely_outside_of_range;
  97 }
  98
  99 void CustomFilterProxyModel::set_sample_range(uint64_t start_sample,
 100         uint64_t end_sample)
 101 {
 102         range_start_sample_ = start_sample;
 103         range_end_sample_ = end_sample;
 104
 105         invalidateFilter();
 106 }
 107
 108
 109 QSize CustomTableView::minimumSizeHint() const
 110 {
 111         QSize size(QTableView::sizeHint());
 112
 113         int width = 0;
 114         for (int i = 0; i < horizontalHeader()->count(); i++)
 115                 if (!horizontalHeader()->isSectionHidden(i))
 116                         width += horizontalHeader()->sectionSize(i);
 117
 118         size.setWidth(width + (horizontalHeader()->count() * 1));
 119
 120         return size;
 121 }
 122
 123 QSize CustomTableView::sizeHint() const
 124 {
 125         return minimumSizeHint();
 126 }
 127
 128
 129 View::View(Session &session, bool is_main_view, QMainWindow *parent) :
 130         ViewBase(session, is_main_view, parent),
 131
 132         // Note: Place defaults in View::reset_view_state(), not here
 133         parent_(parent),
 134         decoder_selector_(new QComboBox()),
 135         hide_hidden_cb_(new QCheckBox()),
 136         view_mode_selector_(new QComboBox()),
 137         save_button_(new QToolButton()),
 138         save_action_(new QAction(this)),
 139         table_view_(new CustomTableView()),
 140         model_(new AnnotationCollectionModel(this)),
 141         filter_proxy_model_(new CustomFilterProxyModel(this)),
 142         signal_(nullptr)
 143 {
 144         QVBoxLayout *root_layout = new QVBoxLayout(this);
 145         root_layout->setContentsMargins(0, 0, 0, 0);
 146         root_layout->addWidget(table_view_);
 147
 148         // Create toolbar
 149         QToolBar* toolbar = new QToolBar();
 150         toolbar->setContextMenuPolicy(Qt::PreventContextMenu);
 151         parent->addToolBar(toolbar);
 152
 153         // Populate toolbar
 154         toolbar->addWidget(new QLabel(tr("Decoder:")));
 155         toolbar->addWidget(decoder_selector_);
 156         toolbar->addSeparator();
 157         toolbar->addWidget(save_button_);
 158         toolbar->addSeparator();
 159         toolbar->addWidget(view_mode_selector_);
 160         toolbar->addSeparator();
 161         toolbar->addWidget(hide_hidden_cb_);
 162
 163         connect(decoder_selector_, SIGNAL(currentIndexChanged(int)),
 164                 this, SLOT(on_selected_decoder_changed(int)));
 165         connect(view_mode_selector_, SIGNAL(currentIndexChanged(int)),
 166                 this, SLOT(on_view_mode_changed(int)));
 167         connect(hide_hidden_cb_, SIGNAL(toggled(bool)),
 168                 this, SLOT(on_hide_hidden_changed(bool)));
 169
 170         // Configure widgets
 171         decoder_selector_->setSizeAdjustPolicy(QComboBox::AdjustToContents);
 172
 173         for (int i = 0; i < ViewModeCount; i++)
 174                 view_mode_selector_->addItem(ViewModeNames[i], QVariant::fromValue(i));
 175
 176         hide_hidden_cb_->setText(tr("Hide Hidden Rows/Classes"));
 177         hide_hidden_cb_->setChecked(true);
 178
 179         // Configure actions
 180         save_action_->setText(tr("&Save..."));
 181         save_action_->setIcon(QIcon::fromTheme("document-save-as",
 182                 QIcon(":/icons/document-save-as.png")));
 183         save_action_->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_S));
 184         connect(save_action_, SIGNAL(triggered(bool)),
 185                 this, SLOT(on_actionSave_triggered()));
 186
 187         QMenu *save_menu = new QMenu();
 188         connect(save_menu, SIGNAL(triggered(QAction*)),
 189                 this, SLOT(on_actionSave_triggered(QAction*)));
 190
 191         for (int i = 0; i < SaveTypeCount; i++) {
 192                 QAction *const action = save_menu->addAction(tr(SaveTypeNames[i]));
 193                 action->setData(QVariant::fromValue(i));
 194         }
 195
 196         save_button_->setMenu(save_menu);
 197         save_button_->setDefaultAction(save_action_);
 198         save_button_->setPopupMode(QToolButton::MenuButtonPopup);
 199
 200         // Set up the models and the table view
 201         filter_proxy_model_->setSourceModel(model_);
 202         table_view_->setModel(filter_proxy_model_);
 203
 204         table_view_->setSelectionBehavior(QAbstractItemView::SelectRows);
 205         table_view_->setSelectionMode(QAbstractItemView::ContiguousSelection);
 206         table_view_->setSortingEnabled(true);
 207         table_view_->sortByColumn(0, Qt::AscendingOrder);
 208
 209         for (uint8_t i = model_->first_hidden_column(); i < model_->columnCount(); i++)
 210                 table_view_->setColumnHidden(i, true);
 211
 212         const int font_height = QFontMetrics(QApplication::font()).height();
 213         table_view_->verticalHeader()->setDefaultSectionSize((font_height * 5) / 4);
 214         table_view_->verticalHeader()->setVisible(false);
 215
 216         table_view_->horizontalHeader()->setStretchLastSection(true);
 217         table_view_->horizontalHeader()->setCascadingSectionResizes(true);
 218         table_view_->horizontalHeader()->setSectionsMovable(true);
 219         table_view_->horizontalHeader()->setContextMenuPolicy(Qt::CustomContextMenu);
 220
 221         table_view_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
 222         parent->setSizePolicy(table_view_->sizePolicy());
 223
 224         connect(table_view_, SIGNAL(clicked(const QModelIndex&)),
 225                 this, SLOT(on_table_item_clicked(const QModelIndex&)));
 226         connect(table_view_, SIGNAL(doubleClicked(const QModelIndex&)),
 227                 this, SLOT(on_table_item_double_clicked(const QModelIndex&)));
 228         connect(table_view_->horizontalHeader(), SIGNAL(customContextMenuRequested(const QPoint&)),
 229                 this, SLOT(on_table_header_requested(const QPoint&)));
 230
 231         // Set up metadata event handler
 232         session_.metadata_obj_manager()->add_observer(this);
 233
 234         reset_view_state();
 235 }
 236
 237 View::~View()
 238 {
 239         session_.metadata_obj_manager()->remove_observer(this);
 240 }
 241
 242 ViewType View::get_type() const
 243 {
 244         return ViewTypeTabularDecoder;
 245 }
 246
 247 void View::reset_view_state()
 248 {
 249         ViewBase::reset_view_state();
 250
 251         decoder_selector_->clear();
 252 }
 253
 254 void View::clear_decode_signals()
 255 {
 256         ViewBase::clear_decode_signals();
 257
 258         reset_data();
 259         reset_view_state();
 260 }
 261
 262 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
 263 {
 264         ViewBase::add_decode_signal(signal);
 265
 266         connect(signal.get(), SIGNAL(name_changed(const QString&)),
 267                 this, SLOT(on_signal_name_changed(const QString&)));
 268
 269         // Note: At time of initial creation, decode signals have no decoders so we
 270         // need to watch for decoder stacking events
 271
 272         connect(signal.get(), SIGNAL(decoder_stacked(void*)),
 273                 this, SLOT(on_decoder_stacked(void*)));
 274         connect(signal.get(), SIGNAL(decoder_removed(void*)),
 275                 this, SLOT(on_decoder_removed(void*)));
 276
 277         // Add the top-level decoder provided by an already-existing signal
 278         auto stack = signal->decoder_stack();
 279         if (!stack.empty()) {
 280                 shared_ptr<Decoder>& dec = stack.at(0);
 281                 decoder_selector_->addItem(signal->name(), QVariant::fromValue((void*)dec.get()));
 282         }
 283 }
 284
 285 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
 286 {
 287         // Remove all decoders provided by this signal
 288         for (const shared_ptr<Decoder>& dec : signal->decoder_stack()) {
 289                 int index = decoder_selector_->findData(QVariant::fromValue((void*)dec.get()));
 290
 291                 if (index != -1)
 292                         decoder_selector_->removeItem(index);
 293         }
 294
 295         ViewBase::remove_decode_signal(signal);
 296
 297         if (signal.get() == signal_) {
 298                 reset_data();
 299                 update_data();
 300                 reset_view_state();
 301         }
 302 }
 303
 304 void View::save_settings(QSettings &settings) const
 305 {
 306         ViewBase::save_settings(settings);
 307
 308         settings.setValue("view_mode", view_mode_selector_->currentIndex());
 309         settings.setValue("hide_hidden", hide_hidden_cb_->isChecked());
 310 }
 311
 312 void View::restore_settings(QSettings &settings)
 313 {
 314         ViewBase::restore_settings(settings);
 315
 316         if (settings.contains("view_mode"))
 317                 view_mode_selector_->setCurrentIndex(settings.value("view_mode").toInt());
 318
 319         if (settings.contains("hide_hidden"))
 320                 hide_hidden_cb_->setChecked(settings.value("hide_hidden").toBool());
 321 }
 322
 323 void View::reset_data()
 324 {
 325         signal_ = nullptr;
 326         decoder_ = nullptr;
 327 }
 328
 329 void View::update_data()
 330 {
 331         model_->set_signal_and_segment(signal_, current_segment_);
 332 }
 333
 334 void View::save_data_as_csv(unsigned int save_type) const
 335 {
 336         // Note: We try to follow RFC 4180 (https://tools.ietf.org/html/rfc4180)
 337
 338         assert(decoder_);
 339         assert(signal_);
 340
 341         if (!signal_)
 342                 return;
 343
 344         const bool save_all = !table_view_->selectionModel()->hasSelection();
 345
 346         GlobalSettings settings;
 347         const QString dir = settings.value("MainWindow/SaveDirectory").toString();
 348
 349         const QString file_name = QFileDialog::getSaveFileName(
 350                 parent_, tr("Save Annotations as CSV"), dir, tr("CSV Files (*.csv);;Text Files (*.txt);;All Files (*)"));
 351
 352         if (file_name.isEmpty())
 353                 return;
 354
 355         QFile file(file_name);
 356         if (file.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
 357                 QTextStream out_stream(&file);
 358
 359                 if (save_all)
 360                         table_view_->selectAll();
 361
 362                 // Write out header columns in visual order, not logical order
 363                 for (int i = 0; i < table_view_->horizontalHeader()->count(); i++) {
 364                         int column = table_view_->horizontalHeader()->logicalIndex(i);
 365
 366                         if (table_view_->horizontalHeader()->isSectionHidden(column))
 367                                 continue;
 368
 369                         const QString title = model_->headerData(column, Qt::Horizontal, Qt::DisplayRole).toString();
 370
 371                         if (save_type == SaveTypeCSVEscaped)
 372                                 out_stream << title;
 373                         else
 374                                 out_stream << '"' << title << '"';
 375
 376                         if (i < (table_view_->horizontalHeader()->count() - 1))
 377                                 out_stream << ",";
 378                 }
 379                 out_stream << '\r' << '\n';
 380
 381
 382                 QModelIndexList selected_rows = table_view_->selectionModel()->selectedRows();
 383
 384                 for (int i = 0; i < selected_rows.size(); i++) {
 385                         const int row = selected_rows.at(i).row();
 386
 387                         // Write out columns in visual order, not logical order
 388                         for (int c = 0; c < table_view_->horizontalHeader()->count(); c++) {
 389                                 const int column = table_view_->horizontalHeader()->logicalIndex(c);
 390
 391                                 if (table_view_->horizontalHeader()->isSectionHidden(column))
 392                                         continue;
 393
 394                                 const QModelIndex idx = model_->index(row, column);
 395                                 QString s = model_->data(idx, Qt::DisplayRole).toString();
 396
 397                                 if (save_type == SaveTypeCSVEscaped)
 398                                         out_stream << s.replace(",", "\\,");
 399                                 else
 400                                         out_stream << '"' << s.replace("\"", "\"\"") << '"';
 401
 402                                 if (c < (table_view_->horizontalHeader()->count() - 1))
 403                                         out_stream << ",";
 404                         }
 405
 406                         out_stream << '\r' << '\n';
 407                 }
 408
 409                 if (out_stream.status() == QTextStream::Ok) {
 410                         if (save_all)
 411                                 table_view_->clearSelection();
 412
 413                         return;
 414                 }
 415         }
 416
 417         QMessageBox msg(parent_);
 418         msg.setText(tr("Error") + "\n\n" + tr("File %1 could not be written to.").arg(file_name));
 419         msg.setStandardButtons(QMessageBox::Ok);
 420         msg.setIcon(QMessageBox::Warning);
 421         msg.exec();
 422 }
 423
 424 void View::on_selected_decoder_changed(int index)
 425 {
 426         if (signal_) {
 427                 disconnect(signal_, SIGNAL(color_changed(QColor)));
 428                 disconnect(signal_, SIGNAL(new_annotations()));
 429                 disconnect(signal_, SIGNAL(decode_reset()));
 430         }
 431
 432         reset_data();
 433
 434         decoder_ = (Decoder*)decoder_selector_->itemData(index).value<void*>();
 435
 436         // Find the signal that contains the selected decoder
 437         for (const shared_ptr<DecodeSignal>& ds : decode_signals_)
 438                 for (const shared_ptr<Decoder>& dec : ds->decoder_stack())
 439                         if (decoder_ == dec.get())
 440                                 signal_ = ds.get();
 441
 442         if (signal_) {
 443                 connect(signal_, SIGNAL(color_changed(QColor)), this, SLOT(on_signal_color_changed(QColor)));
 444                 connect(signal_, SIGNAL(new_annotations()), this, SLOT(on_new_annotations()));
 445                 connect(signal_, SIGNAL(decode_reset()), this, SLOT(on_decoder_reset()));
 446         }
 447
 448         update_data();
 449 }
 450
 451 void View::on_hide_hidden_changed(bool checked)
 452 {
 453         model_->set_hide_hidden(checked);
 454
 455         // Force repaint, otherwise the new selection isn't shown for some reason
 456         table_view_->viewport()->update();
 457 }
 458
 459 void View::on_view_mode_changed(int index)
 460 {
 461         if (index == ViewModeVisible) {
 462                 MetadataObject *md_obj =
 463                         session_.metadata_obj_manager()->find_object_by_type(MetadataObjMainViewRange);
 464                 assert(md_obj);
 465
 466                 int64_t start_sample = md_obj->value(MetadataValueStartSample).toLongLong();
 467                 int64_t end_sample = md_obj->value(MetadataValueEndSample).toLongLong();
 468
 469                 filter_proxy_model_->set_sample_range(max((int64_t)0, start_sample),
 470                         max((int64_t)0, end_sample));
 471
 472                 // Force repaint, otherwise the new selection may not show immediately
 473 //              table_view_->viewport()->update();
 474         } else {
 475                 // Use the data model directly
 476                 table_view_->setModel(model_);
 477         }
 478
 479         if (index == ViewModeLatest)
 480                 table_view_->scrollTo(
 481                         filter_proxy_model_->mapFromSource(model_->index(model_->rowCount() - 1, 0)),
 482                         QAbstractItemView::PositionAtBottom);
 483 }
 484
 485 void View::on_signal_name_changed(const QString &name)
 486 {
 487         (void)name;
 488
 489         SignalBase* sb = qobject_cast<SignalBase*>(QObject::sender());
 490         assert(sb);
 491
 492         DecodeSignal* signal = dynamic_cast<DecodeSignal*>(sb);
 493         assert(signal);
 494
 495         // Update the top-level decoder provided by this signal
 496         auto stack = signal->decoder_stack();
 497         if (!stack.empty()) {
 498                 shared_ptr<Decoder>& dec = stack.at(0);
 499                 int index = decoder_selector_->findData(QVariant::fromValue((void*)dec.get()));
 500
 501                 if (index != -1)
 502                         decoder_selector_->setItemText(index, signal->name());
 503         }
 504 }
 505
 506 void View::on_signal_color_changed(const QColor &color)
 507 {
 508         (void)color;
 509
 510         table_view_->update();
 511 }
 512
 513 void View::on_new_annotations()
 514 {
 515         if (view_mode_selector_->currentIndex() == ViewModeLatest) {
 516                 update_data();
 517                 table_view_->scrollTo(model_->index(model_->rowCount() - 1, 0),
 518                         QAbstractItemView::PositionAtBottom);
 519         } else {
 520                 if (!delayed_view_updater_.isActive())
 521                         delayed_view_updater_.start();
 522         }
 523 }
 524
 525 void View::on_decoder_reset()
 526 {
 527         // Invalidate the model's data connection immediately - otherwise we
 528         // will use a stale pointer in model_->index() when called from the table view
 529         model_->set_signal_and_segment(signal_, current_segment_);
 530 }
 531
 532 void View::on_decoder_stacked(void* decoder)
 533 {
 534         Decoder* d = static_cast<Decoder*>(decoder);
 535
 536         // Find the signal that contains the selected decoder
 537         DecodeSignal* signal = nullptr;
 538
 539         for (const shared_ptr<DecodeSignal>& ds : decode_signals_)
 540                 for (const shared_ptr<Decoder>& dec : ds->decoder_stack())
 541                         if (d == dec.get())
 542                                 signal = ds.get();
 543
 544         assert(signal);
 545
 546         const shared_ptr<Decoder>& dec = signal->decoder_stack().at(0);
 547         int index = decoder_selector_->findData(QVariant::fromValue((void*)dec.get()));
 548
 549         if (index == -1) {
 550                 // Add the decoder to the list
 551                 decoder_selector_->addItem(signal->name(), QVariant::fromValue((void*)d));
 552         }
 553 }
 554
 555 void View::on_decoder_removed(void* decoder)
 556 {
 557         Decoder* d = static_cast<Decoder*>(decoder);
 558
 559         // Remove the decoder from the list
 560         int index = decoder_selector_->findData(QVariant::fromValue((void*)d));
 561
 562         if (index != -1)
 563                 decoder_selector_->removeItem(index);
 564 }
 565
 566 void View::on_actionSave_triggered(QAction* action)
 567 {
 568         int save_type = SaveTypeCSVQuoted;
 569
 570         if (action)
 571                 save_type = action->data().toInt();
 572
 573         save_data_as_csv(save_type);
 574 }
 575
 576 void View::on_table_item_clicked(const QModelIndex& index)
 577 {
 578         (void)index;
 579
 580         // Force repaint, otherwise the new selection isn't shown for some reason
 581         table_view_->viewport()->update();
 582 }
 583
 584 void View::on_table_item_double_clicked(const QModelIndex& index)
 585 {
 586         const Annotation* ann = static_cast<const Annotation*>(index.internalPointer());
 587
 588         shared_ptr<views::ViewBase> main_view = session_.main_view();
 589
 590         main_view->focus_on_range(ann->start_sample(), ann->end_sample());
 591 }
 592
 593 void View::on_table_header_requested(const QPoint& pos)
 594 {
 595         QMenu* menu = new QMenu(this);
 596
 597         for (int i = 0; i < table_view_->horizontalHeader()->count(); i++) {
 598                 int column = table_view_->horizontalHeader()->logicalIndex(i);
 599
 600                 const QString title = model_->headerData(column, Qt::Horizontal, Qt::DisplayRole).toString();
 601                 QAction* action = new QAction(title, this);
 602
 603                 action->setCheckable(true);
 604                 action->setChecked(!table_view_->horizontalHeader()->isSectionHidden(column));
 605                 action->setData(column);
 606
 607                 connect(action, SIGNAL(toggled(bool)), this, SLOT(on_table_header_toggled(bool)));
 608
 609                 menu->addAction(action);
 610         }
 611
 612         menu->popup(table_view_->horizontalHeader()->viewport()->mapToGlobal(pos));
 613 }
 614
 615 void View::on_table_header_toggled(bool checked)
 616 {
 617         QAction* action = qobject_cast<QAction*>(QObject::sender());
 618         assert(action);
 619
 620         const int column = action->data().toInt();
 621
 622         table_view_->horizontalHeader()->setSectionHidden(column, !checked);
 623 }
 624
 625 void View::on_metadata_object_changed(MetadataObject* obj,
 626         MetadataValueType value_type)
 627 {
 628         // Check if we need to update the model's data range. We only work on the
 629         // end sample value because the start sample value is updated first and
 630         // we don't want to update the model twice
 631
 632         if ((view_mode_selector_->currentIndex() == ViewModeVisible) &&
 633                 (obj->type() == MetadataObjMainViewRange) &&
 634                 (value_type == MetadataValueEndSample)) {
 635
 636                 int64_t start_sample = obj->value(MetadataValueStartSample).toLongLong();
 637                 int64_t end_sample = obj->value(MetadataValueEndSample).toLongLong();
 638
 639                 filter_proxy_model_->set_sample_range(max((int64_t)0, start_sample),
 640                         max((int64_t)0, end_sample));
 641         }
 642
 643         if (obj->type() == MetadataObjMousePos) {
 644                 QModelIndex first_visible_idx =
 645                         filter_proxy_model_->mapToSource(filter_proxy_model_->index(0, 0));
 646                 QModelIndex last_visible_idx =
 647                         filter_proxy_model_->mapToSource(filter_proxy_model_->index(filter_proxy_model_->rowCount() - 1, 0));
 648
 649                 if (first_visible_idx.isValid()) {
 650                         const QModelIndex first_highlighted_idx =
 651                                 model_->update_highlighted_rows(first_visible_idx, last_visible_idx,
 652                                         obj->value(MetadataValueStartSample).toLongLong());
 653
 654                         if (view_mode_selector_->currentIndex() == ViewModeVisible) {
 655                                 const QModelIndex idx = filter_proxy_model_->mapFromSource(first_highlighted_idx);
 656                                 table_view_->scrollTo(idx, QAbstractItemView::EnsureVisible);
 657                         }
 658                 }
 659         }
 660 }
 661
 662 void View::perform_delayed_view_update()
 663 {
 664         update_data();
 665 }
 666
 667
 668 } // namespace tabular_decoder
 669 } // namespace views
 670 } // namespace pv