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         range_filtering_enabled_(false)
  70 {
  71 }
  72
  73 bool CustomFilterProxyModel::filterAcceptsRow(int sourceRow,
  74         const QModelIndex &sourceParent) const
  75 {
  76         (void)sourceParent;
  77         assert(sourceModel() != nullptr);
  78
  79         bool result = true;
  80
  81         if (range_filtering_enabled_) {
  82                 const QModelIndex ann_start_sample_idx = sourceModel()->index(sourceRow, 0);
  83                 const uint64_t ann_start_sample =
  84                         sourceModel()->data(ann_start_sample_idx, Qt::DisplayRole).toULongLong();
  85
  86                 const QModelIndex ann_end_sample_idx = sourceModel()->index(sourceRow, 6);
  87                 const uint64_t ann_end_sample =
  88                         sourceModel()->data(ann_end_sample_idx, Qt::DisplayRole).toULongLong();
  89
  90                 // We consider all annotations as visible that either
  91                 // a) begin to the left of the range and end within the range or
  92                 // b) begin and end within the range or
  93                 // c) begin within the range and end to the right of the range
  94                 // ...which is equivalent to the negation of "begins and ends outside the range"
  95
  96                 const bool left_of_range = (ann_end_sample < range_start_sample_);
  97                 const bool right_of_range = (ann_start_sample > range_end_sample_);
  98                 const bool entirely_outside_of_range = left_of_range || right_of_range;
  99
 100                 result = !entirely_outside_of_range;
 101         }
 102
 103         return result;
 104 }
 105
 106 void CustomFilterProxyModel::set_sample_range(uint64_t start_sample,
 107         uint64_t end_sample)
 108 {
 109         range_start_sample_ = start_sample;
 110         range_end_sample_ = end_sample;
 111
 112         invalidateFilter();
 113 }
 114
 115 void CustomFilterProxyModel::enable_range_filtering(bool value)
 116 {
 117         range_filtering_enabled_ = value;
 118
 119         invalidateFilter();
 120 }
 121
 122
 123 QSize CustomTableView::minimumSizeHint() const
 124 {
 125         QSize size(QTableView::sizeHint());
 126
 127         int width = 0;
 128         for (int i = 0; i < horizontalHeader()->count(); i++)
 129                 if (!horizontalHeader()->isSectionHidden(i))
 130                         width += horizontalHeader()->sectionSize(i);
 131
 132         size.setWidth(width + (horizontalHeader()->count() * 1));
 133
 134         return size;
 135 }
 136
 137 QSize CustomTableView::sizeHint() const
 138 {
 139         return minimumSizeHint();
 140 }
 141
 142 void CustomTableView::keyPressEvent(QKeyEvent *event)
 143 {
 144         if ((event->key() == Qt::Key_Return) || (event->key() == Qt::Key_Enter))
 145                 activatedByKey(currentIndex());
 146         else
 147                 QTableView::keyPressEvent(event);
 148 }
 149
 150
 151 View::View(Session &session, bool is_main_view, QMainWindow *parent) :
 152         ViewBase(session, is_main_view, parent),
 153
 154         // Note: Place defaults in View::reset_view_state(), not here
 155         parent_(parent),
 156         decoder_selector_(new QComboBox()),
 157         hide_hidden_cb_(new QCheckBox()),
 158         view_mode_selector_(new QComboBox()),
 159         save_button_(new QToolButton()),
 160         save_action_(new QAction(this)),
 161         table_view_(new CustomTableView()),
 162         model_(new AnnotationCollectionModel(this)),
 163         filter_proxy_model_(new CustomFilterProxyModel(this)),
 164         signal_(nullptr)
 165 {
 166         QVBoxLayout *root_layout = new QVBoxLayout(this);
 167         root_layout->setContentsMargins(0, 0, 0, 0);
 168         root_layout->addWidget(table_view_);
 169
 170         // Create toolbar
 171         QToolBar* toolbar = new QToolBar();
 172         toolbar->setContextMenuPolicy(Qt::PreventContextMenu);
 173         parent->addToolBar(toolbar);
 174
 175         // Populate toolbar
 176         toolbar->addWidget(new QLabel(tr("Decoder:")));
 177         toolbar->addWidget(decoder_selector_);
 178         toolbar->addSeparator();
 179         toolbar->addWidget(save_button_);
 180         toolbar->addSeparator();
 181         toolbar->addWidget(view_mode_selector_);
 182         toolbar->addSeparator();
 183         toolbar->addWidget(hide_hidden_cb_);
 184
 185         connect(decoder_selector_, SIGNAL(currentIndexChanged(int)),
 186                 this, SLOT(on_selected_decoder_changed(int)));
 187         connect(view_mode_selector_, SIGNAL(currentIndexChanged(int)),
 188                 this, SLOT(on_view_mode_changed(int)));
 189         connect(hide_hidden_cb_, SIGNAL(toggled(bool)),
 190                 this, SLOT(on_hide_hidden_changed(bool)));
 191
 192         // Configure widgets
 193         decoder_selector_->setSizeAdjustPolicy(QComboBox::AdjustToContents);
 194
 195         for (int i = 0; i < ViewModeCount; i++)
 196                 view_mode_selector_->addItem(ViewModeNames[i], QVariant::fromValue(i));
 197
 198         hide_hidden_cb_->setText(tr("Hide Hidden Rows/Classes"));
 199         hide_hidden_cb_->setChecked(true);
 200
 201         // Configure actions
 202         save_action_->setText(tr("&Save..."));
 203         save_action_->setIcon(QIcon::fromTheme("document-save-as",
 204                 QIcon(":/icons/document-save-as.png")));
 205         save_action_->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_S));
 206         connect(save_action_, SIGNAL(triggered(bool)),
 207                 this, SLOT(on_actionSave_triggered()));
 208
 209         QMenu *save_menu = new QMenu();
 210         connect(save_menu, SIGNAL(triggered(QAction*)),
 211                 this, SLOT(on_actionSave_triggered(QAction*)));
 212
 213         for (int i = 0; i < SaveTypeCount; i++) {
 214                 QAction *const action = save_menu->addAction(tr(SaveTypeNames[i]));
 215                 action->setData(QVariant::fromValue(i));
 216         }
 217
 218         save_button_->setMenu(save_menu);
 219         save_button_->setDefaultAction(save_action_);
 220         save_button_->setPopupMode(QToolButton::MenuButtonPopup);
 221
 222         // Set up the models and the table view
 223         filter_proxy_model_->setSourceModel(model_);
 224         table_view_->setModel(filter_proxy_model_);
 225
 226         table_view_->setSelectionBehavior(QAbstractItemView::SelectRows);
 227         table_view_->setSelectionMode(QAbstractItemView::ContiguousSelection);
 228         table_view_->setSortingEnabled(true);
 229         table_view_->sortByColumn(0, Qt::AscendingOrder);
 230
 231         for (uint8_t i = model_->first_hidden_column(); i < model_->columnCount(); i++)
 232                 table_view_->setColumnHidden(i, true);
 233
 234         const int font_height = QFontMetrics(QApplication::font()).height();
 235         table_view_->verticalHeader()->setDefaultSectionSize((font_height * 5) / 4);
 236         table_view_->verticalHeader()->setVisible(false);
 237
 238         table_view_->horizontalHeader()->setStretchLastSection(true);
 239         table_view_->horizontalHeader()->setCascadingSectionResizes(true);
 240         table_view_->horizontalHeader()->setSectionsMovable(true);
 241         table_view_->horizontalHeader()->setContextMenuPolicy(Qt::CustomContextMenu);
 242
 243         table_view_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
 244         parent->setSizePolicy(table_view_->sizePolicy());
 245
 246         connect(table_view_, SIGNAL(clicked(const QModelIndex&)),
 247                 this, SLOT(on_table_item_clicked(const QModelIndex&)));
 248         connect(table_view_, SIGNAL(doubleClicked(const QModelIndex&)),
 249                 this, SLOT(on_table_item_double_clicked(const QModelIndex&)));
 250         connect(table_view_, SIGNAL(activatedByKey(const QModelIndex&)),
 251                 this, SLOT(on_table_item_double_clicked(const QModelIndex&)));
 252         connect(table_view_->horizontalHeader(), SIGNAL(customContextMenuRequested(const QPoint&)),
 253                 this, SLOT(on_table_header_requested(const QPoint&)));
 254
 255         // Set up metadata event handler
 256         session_.metadata_obj_manager()->add_observer(this);
 257
 258         reset_view_state();
 259 }
 260
 261 View::~View()
 262 {
 263         session_.metadata_obj_manager()->remove_observer(this);
 264 }
 265
 266 ViewType View::get_type() const
 267 {
 268         return ViewTypeTabularDecoder;
 269 }
 270
 271 void View::reset_view_state()
 272 {
 273         ViewBase::reset_view_state();
 274
 275         decoder_selector_->clear();
 276 }
 277
 278 void View::clear_decode_signals()
 279 {
 280         ViewBase::clear_decode_signals();
 281
 282         reset_data();
 283         reset_view_state();
 284 }
 285
 286 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
 287 {
 288         ViewBase::add_decode_signal(signal);
 289
 290         connect(signal.get(), SIGNAL(name_changed(const QString&)),
 291                 this, SLOT(on_signal_name_changed(const QString&)));
 292
 293         // Note: At time of initial creation, decode signals have no decoders so we
 294         // need to watch for decoder stacking events
 295
 296         connect(signal.get(), SIGNAL(decoder_stacked(void*)),
 297                 this, SLOT(on_decoder_stacked(void*)));
 298         connect(signal.get(), SIGNAL(decoder_removed(void*)),
 299                 this, SLOT(on_decoder_removed(void*)));
 300
 301         // Add the top-level decoder provided by an already-existing signal
 302         auto stack = signal->decoder_stack();
 303         if (!stack.empty()) {
 304                 shared_ptr<Decoder>& dec = stack.at(0);
 305                 decoder_selector_->addItem(signal->name(), QVariant::fromValue((void*)dec.get()));
 306         }
 307 }
 308
 309 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
 310 {
 311         // Remove all decoders provided by this signal
 312         for (const shared_ptr<Decoder>& dec : signal->decoder_stack()) {
 313                 int index = decoder_selector_->findData(QVariant::fromValue((void*)dec.get()));
 314
 315                 if (index != -1)
 316                         decoder_selector_->removeItem(index);
 317         }
 318
 319         ViewBase::remove_decode_signal(signal);
 320
 321         if (signal.get() == signal_) {
 322                 reset_data();
 323                 update_data();
 324                 reset_view_state();
 325         }
 326 }
 327
 328 void View::save_settings(QSettings &settings) const
 329 {
 330         ViewBase::save_settings(settings);
 331
 332         settings.setValue("view_mode", view_mode_selector_->currentIndex());
 333         settings.setValue("hide_hidden", hide_hidden_cb_->isChecked());
 334 }
 335
 336 void View::restore_settings(QSettings &settings)
 337 {
 338         ViewBase::restore_settings(settings);
 339
 340         if (settings.contains("view_mode"))
 341                 view_mode_selector_->setCurrentIndex(settings.value("view_mode").toInt());
 342
 343         if (settings.contains("hide_hidden"))
 344                 hide_hidden_cb_->setChecked(settings.value("hide_hidden").toBool());
 345 }
 346
 347 void View::reset_data()
 348 {
 349         signal_ = nullptr;
 350         decoder_ = nullptr;
 351 }
 352
 353 void View::update_data()
 354 {
 355         model_->set_signal_and_segment(signal_, current_segment_);
 356 }
 357
 358 void View::save_data_as_csv(unsigned int save_type) const
 359 {
 360         // Note: We try to follow RFC 4180 (https://tools.ietf.org/html/rfc4180)
 361
 362         assert(decoder_);
 363         assert(signal_);
 364
 365         if (!signal_)
 366                 return;
 367
 368         const bool save_all = !table_view_->selectionModel()->hasSelection();
 369
 370         GlobalSettings settings;
 371         const QString dir = settings.value("MainWindow/SaveDirectory").toString();
 372
 373         const QString file_name = QFileDialog::getSaveFileName(
 374                 parent_, tr("Save Annotations as CSV"), dir, tr("CSV Files (*.csv);;Text Files (*.txt);;All Files (*)"));
 375
 376         if (file_name.isEmpty())
 377                 return;
 378
 379         QFile file(file_name);
 380         if (file.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
 381                 QTextStream out_stream(&file);
 382
 383                 if (save_all)
 384                         table_view_->selectAll();
 385
 386                 // Write out header columns in visual order, not logical order
 387                 for (int i = 0; i < table_view_->horizontalHeader()->count(); i++) {
 388                         int column = table_view_->horizontalHeader()->logicalIndex(i);
 389
 390                         if (table_view_->horizontalHeader()->isSectionHidden(column))
 391                                 continue;
 392
 393                         const QString title = filter_proxy_model_->headerData(column, Qt::Horizontal, Qt::DisplayRole).toString();
 394
 395                         if (save_type == SaveTypeCSVEscaped)
 396                                 out_stream << title;
 397                         else
 398                                 out_stream << '"' << title << '"';
 399
 400                         if (i < (table_view_->horizontalHeader()->count() - 1))
 401                                 out_stream << ",";
 402                 }
 403                 out_stream << '\r' << '\n';
 404
 405
 406                 QModelIndexList selected_rows = table_view_->selectionModel()->selectedRows();
 407
 408                 for (int i = 0; i < selected_rows.size(); i++) {
 409                         const int row = selected_rows.at(i).row();
 410
 411                         // Write out columns in visual order, not logical order
 412                         for (int c = 0; c < table_view_->horizontalHeader()->count(); c++) {
 413                                 const int column = table_view_->horizontalHeader()->logicalIndex(c);
 414
 415                                 if (table_view_->horizontalHeader()->isSectionHidden(column))
 416                                         continue;
 417
 418                                 const QModelIndex idx = filter_proxy_model_->index(row, column);
 419                                 QString s = filter_proxy_model_->data(idx, Qt::DisplayRole).toString();
 420
 421                                 if (save_type == SaveTypeCSVEscaped)
 422                                         out_stream << s.replace(",", "\\,");
 423                                 else
 424                                         out_stream << '"' << s.replace("\"", "\"\"") << '"';
 425
 426                                 if (c < (table_view_->horizontalHeader()->count() - 1))
 427                                         out_stream << ",";
 428                         }
 429
 430                         out_stream << '\r' << '\n';
 431                 }
 432
 433                 if (out_stream.status() == QTextStream::Ok) {
 434                         if (save_all)
 435                                 table_view_->clearSelection();
 436
 437                         return;
 438                 }
 439         }
 440
 441         QMessageBox msg(parent_);
 442         msg.setText(tr("Error") + "\n\n" + tr("File %1 could not be written to.").arg(file_name));
 443         msg.setStandardButtons(QMessageBox::Ok);
 444         msg.setIcon(QMessageBox::Warning);
 445         msg.exec();
 446 }
 447
 448 void View::on_selected_decoder_changed(int index)
 449 {
 450         if (signal_) {
 451                 disconnect(signal_, SIGNAL(color_changed(QColor)));
 452                 disconnect(signal_, SIGNAL(new_annotations()));
 453                 disconnect(signal_, SIGNAL(decode_reset()));
 454         }
 455
 456         reset_data();
 457
 458         decoder_ = (Decoder*)decoder_selector_->itemData(index).value<void*>();
 459
 460         // Find the signal that contains the selected decoder
 461         for (const shared_ptr<DecodeSignal>& ds : decode_signals_)
 462                 for (const shared_ptr<Decoder>& dec : ds->decoder_stack())
 463                         if (decoder_ == dec.get())
 464                                 signal_ = ds.get();
 465
 466         if (signal_) {
 467                 connect(signal_, SIGNAL(color_changed(QColor)), this, SLOT(on_signal_color_changed(QColor)));
 468                 connect(signal_, SIGNAL(new_annotations()), this, SLOT(on_new_annotations()));
 469                 connect(signal_, SIGNAL(decode_reset()), this, SLOT(on_decoder_reset()));
 470         }
 471
 472         update_data();
 473 }
 474
 475 void View::on_hide_hidden_changed(bool checked)
 476 {
 477         model_->set_hide_hidden(checked);
 478
 479         // Force repaint, otherwise the new selection isn't shown for some reason
 480         table_view_->viewport()->update();
 481 }
 482
 483 void View::on_view_mode_changed(int index)
 484 {
 485         if (index == ViewModeAll)
 486                 filter_proxy_model_->enable_range_filtering(false);
 487
 488         if (index == ViewModeVisible) {
 489                 MetadataObject *md_obj =
 490                         session_.metadata_obj_manager()->find_object_by_type(MetadataObjMainViewRange);
 491                 assert(md_obj);
 492
 493                 int64_t start_sample = md_obj->value(MetadataValueStartSample).toLongLong();
 494                 int64_t end_sample = md_obj->value(MetadataValueEndSample).toLongLong();
 495
 496                 filter_proxy_model_->enable_range_filtering(true);
 497                 filter_proxy_model_->set_sample_range(max((int64_t)0, start_sample),
 498                         max((int64_t)0, end_sample));
 499         }
 500
 501         if (index == ViewModeLatest) {
 502                 filter_proxy_model_->enable_range_filtering(false);
 503
 504                 table_view_->scrollTo(
 505                         filter_proxy_model_->mapFromSource(model_->index(model_->rowCount() - 1, 0)),
 506                         QAbstractItemView::PositionAtBottom);
 507         }
 508 }
 509
 510 void View::on_signal_name_changed(const QString &name)
 511 {
 512         (void)name;
 513
 514         SignalBase* sb = qobject_cast<SignalBase*>(QObject::sender());
 515         assert(sb);
 516
 517         DecodeSignal* signal = dynamic_cast<DecodeSignal*>(sb);
 518         assert(signal);
 519
 520         // Update the top-level decoder provided by this signal
 521         auto stack = signal->decoder_stack();
 522         if (!stack.empty()) {
 523                 shared_ptr<Decoder>& dec = stack.at(0);
 524                 int index = decoder_selector_->findData(QVariant::fromValue((void*)dec.get()));
 525
 526                 if (index != -1)
 527                         decoder_selector_->setItemText(index, signal->name());
 528         }
 529 }
 530
 531 void View::on_signal_color_changed(const QColor &color)
 532 {
 533         (void)color;
 534
 535         table_view_->update();
 536 }
 537
 538 void View::on_new_annotations()
 539 {
 540         if (view_mode_selector_->currentIndex() == ViewModeLatest) {
 541                 update_data();
 542                 table_view_->scrollTo(
 543                         filter_proxy_model_->index(filter_proxy_model_->rowCount() - 1, 0),
 544                         QAbstractItemView::PositionAtBottom);
 545         } else {
 546                 if (!delayed_view_updater_.isActive())
 547                         delayed_view_updater_.start();
 548         }
 549 }
 550
 551 void View::on_decoder_reset()
 552 {
 553         // Invalidate the model's data connection immediately - otherwise we
 554         // will use a stale pointer in model_->index() when called from the table view
 555         model_->set_signal_and_segment(signal_, current_segment_);
 556 }
 557
 558 void View::on_decoder_stacked(void* decoder)
 559 {
 560         Decoder* d = static_cast<Decoder*>(decoder);
 561
 562         // Find the signal that contains the selected decoder
 563         DecodeSignal* signal = nullptr;
 564
 565         for (const shared_ptr<DecodeSignal>& ds : decode_signals_)
 566                 for (const shared_ptr<Decoder>& dec : ds->decoder_stack())
 567                         if (d == dec.get())
 568                                 signal = ds.get();
 569
 570         assert(signal);
 571
 572         const shared_ptr<Decoder>& dec = signal->decoder_stack().at(0);
 573         int index = decoder_selector_->findData(QVariant::fromValue((void*)dec.get()));
 574
 575         if (index == -1) {
 576                 // Add the decoder to the list
 577                 decoder_selector_->addItem(signal->name(), QVariant::fromValue((void*)d));
 578         }
 579 }
 580
 581 void View::on_decoder_removed(void* decoder)
 582 {
 583         Decoder* d = static_cast<Decoder*>(decoder);
 584
 585         // Remove the decoder from the list
 586         int index = decoder_selector_->findData(QVariant::fromValue((void*)d));
 587
 588         if (index != -1)
 589                 decoder_selector_->removeItem(index);
 590 }
 591
 592 void View::on_actionSave_triggered(QAction* action)
 593 {
 594         int save_type = SaveTypeCSVQuoted;
 595
 596         if (action)
 597                 save_type = action->data().toInt();
 598
 599         save_data_as_csv(save_type);
 600 }
 601
 602 void View::on_table_item_clicked(const QModelIndex& index)
 603 {
 604         (void)index;
 605
 606         // Force repaint, otherwise the new selection isn't shown for some reason
 607         table_view_->viewport()->update();
 608 }
 609
 610 void View::on_table_item_double_clicked(const QModelIndex& index)
 611 {
 612         const QModelIndex src_idx = filter_proxy_model_->mapToSource(index);
 613
 614         const Annotation* ann = static_cast<const Annotation*>(src_idx.internalPointer());
 615         assert(ann);
 616
 617         shared_ptr<views::ViewBase> main_view = session_.main_view();
 618
 619         main_view->focus_on_range(ann->start_sample(), ann->end_sample());
 620 }
 621
 622 void View::on_table_header_requested(const QPoint& pos)
 623 {
 624         QMenu* menu = new QMenu(this);
 625
 626         for (int i = 0; i < table_view_->horizontalHeader()->count(); i++) {
 627                 int column = table_view_->horizontalHeader()->logicalIndex(i);
 628
 629                 const QString title =
 630                         filter_proxy_model_->headerData(column, Qt::Horizontal, Qt::DisplayRole).toString();
 631                 QAction* action = new QAction(title, this);
 632
 633                 action->setCheckable(true);
 634                 action->setChecked(!table_view_->horizontalHeader()->isSectionHidden(column));
 635                 action->setData(column);
 636
 637                 connect(action, SIGNAL(toggled(bool)), this, SLOT(on_table_header_toggled(bool)));
 638
 639                 menu->addAction(action);
 640         }
 641
 642         menu->popup(table_view_->horizontalHeader()->viewport()->mapToGlobal(pos));
 643 }
 644
 645 void View::on_table_header_toggled(bool checked)
 646 {
 647         QAction* action = qobject_cast<QAction*>(QObject::sender());
 648         assert(action);
 649
 650         const int column = action->data().toInt();
 651
 652         table_view_->horizontalHeader()->setSectionHidden(column, !checked);
 653 }
 654
 655 void View::on_metadata_object_changed(MetadataObject* obj,
 656         MetadataValueType value_type)
 657 {
 658         // Check if we need to update the model's data range. We only work on the
 659         // end sample value because the start sample value is updated first and
 660         // we don't want to update the model twice
 661
 662         if ((view_mode_selector_->currentIndex() == ViewModeVisible) &&
 663                 (obj->type() == MetadataObjMainViewRange) &&
 664                 (value_type == MetadataValueEndSample)) {
 665
 666                 int64_t start_sample = obj->value(MetadataValueStartSample).toLongLong();
 667                 int64_t end_sample = obj->value(MetadataValueEndSample).toLongLong();
 668
 669                 filter_proxy_model_->set_sample_range(max((int64_t)0, start_sample),
 670                         max((int64_t)0, end_sample));
 671         }
 672
 673         if (obj->type() == MetadataObjMousePos) {
 674                 QModelIndex first_visible_idx =
 675                         filter_proxy_model_->mapToSource(filter_proxy_model_->index(0, 0));
 676                 QModelIndex last_visible_idx =
 677                         filter_proxy_model_->mapToSource(filter_proxy_model_->index(filter_proxy_model_->rowCount() - 1, 0));
 678
 679                 if (first_visible_idx.isValid()) {
 680                         const QModelIndex first_highlighted_idx =
 681                                 model_->update_highlighted_rows(first_visible_idx, last_visible_idx,
 682                                         obj->value(MetadataValueStartSample).toLongLong());
 683
 684                         if (view_mode_selector_->currentIndex() == ViewModeVisible) {
 685                                 const QModelIndex idx = filter_proxy_model_->mapFromSource(first_highlighted_idx);
 686                                 table_view_->scrollTo(idx, QAbstractItemView::EnsureVisible);
 687                         }
 688
 689                         // Force repaint, otherwise the table doesn't immediately update for some reason
 690                         table_view_->viewport()->update();
 691                 }
 692         }
 693 }
 694
 695 void View::perform_delayed_view_update()
 696 {
 697         update_data();
 698 }
 699
 700
 701 } // namespace tabular_decoder
 702 } // namespace views
 703 } // namespace pv