pv/mainwindow.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 #ifdef ENABLE_DECODE
  21 #include <libsigrokdecode/libsigrokdecode.h>
  22 #endif
  23
  24 #include <algorithm>
  25 #include <cassert>
  26 #include <cstdarg>
  27 #include <cstdint>
  28 #include <iterator>
  29
  30 #include <QAction>
  31 #include <QApplication>
  32 #include <QCloseEvent>
  33 #include <QDebug>
  34 #include <QDockWidget>
  35 #include <QHBoxLayout>
  36 #include <QMessageBox>
  37 #include <QSettings>
  38 #include <QShortcut>
  39 #include <QWidget>
  40
  41 #include "mainwindow.hpp"
  42
  43 #include "devicemanager.hpp"
  44 #include "devices/hardwaredevice.hpp"
  45 #include "dialogs/settings.hpp"
  46 #include "globalsettings.hpp"
  47 #include "toolbars/mainbar.hpp"
  48 #include "util.hpp"
  49 #include "views/trace/view.hpp"
  50 #include "views/trace/standardbar.hpp"
  51
  52 #include <libsigrokcxx/libsigrokcxx.hpp>
  53
  54 using std::dynamic_pointer_cast;
  55 using std::make_shared;
  56 using std::shared_ptr;
  57 using std::string;
  58
  59 namespace pv {
  60
  61 namespace view {
  62 class ViewItem;
  63 }
  64
  65 using toolbars::MainBar;
  66
  67 const QString MainWindow::WindowTitle = tr("PulseView");
  68
  69 MainWindow::MainWindow(DeviceManager &device_manager, QWidget *parent) :
  70         QMainWindow(parent),
  71         device_manager_(device_manager),
  72         session_selector_(this),
  73         session_state_mapper_(this),
  74         icon_red_(":/icons/status-red.svg"),
  75         icon_green_(":/icons/status-green.svg"),
  76         icon_grey_(":/icons/status-grey.svg")
  77 {
  78         qRegisterMetaType<util::Timestamp>("util::Timestamp");
  79         qRegisterMetaType<uint64_t>("uint64_t");
  80
  81         GlobalSettings::add_change_handler(this);
  82
  83         setup_ui();
  84         restore_ui_settings();
  85 }
  86
  87 MainWindow::~MainWindow()
  88 {
  89         GlobalSettings::remove_change_handler(this);
  90
  91         while (!sessions_.empty())
  92                 remove_session(sessions_.front());
  93 }
  94
  95 void MainWindow::show_session_error(const QString text, const QString info_text)
  96 {
  97         // TODO Emulate noquote()
  98         qDebug() << "Notifying user of session error:" << info_text;
  99
 100         QMessageBox msg;
 101         msg.setText(text);
 102         msg.setInformativeText(info_text);
 103         msg.setStandardButtons(QMessageBox::Ok);
 104         msg.setIcon(QMessageBox::Warning);
 105         msg.exec();
 106 }
 107
 108 shared_ptr<views::ViewBase> MainWindow::get_active_view() const
 109 {
 110         // If there's only one view, use it...
 111         if (view_docks_.size() == 1)
 112                 return view_docks_.begin()->second;
 113
 114         // ...otherwise find the dock widget the widget with focus is contained in
 115         QObject *w = QApplication::focusWidget();
 116         QDockWidget *dock = nullptr;
 117
 118         while (w) {
 119                 dock = qobject_cast<QDockWidget*>(w);
 120                 if (dock)
 121                         break;
 122                 w = w->parent();
 123         }
 124
 125         // Get the view contained in the dock widget
 126         for (auto entry : view_docks_)
 127                 if (entry.first == dock)
 128                         return entry.second;
 129
 130         return nullptr;
 131 }
 132
 133 shared_ptr<views::ViewBase> MainWindow::add_view(const QString &title,
 134         views::ViewType type, Session &session)
 135 {
 136         GlobalSettings settings;
 137         shared_ptr<views::ViewBase> v;
 138
 139         QMainWindow *main_window = nullptr;
 140         for (auto entry : session_windows_)
 141                 if (entry.first.get() == &session)
 142                         main_window = entry.second;
 143
 144         assert(main_window);
 145
 146         shared_ptr<MainBar> main_bar = session.main_bar();
 147
 148         QDockWidget* dock = new QDockWidget(title, main_window);
 149         dock->setObjectName(title);
 150         main_window->addDockWidget(Qt::TopDockWidgetArea, dock);
 151
 152         // Insert a QMainWindow into the dock widget to allow for a tool bar
 153         QMainWindow *dock_main = new QMainWindow(dock);
 154         dock_main->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
 155
 156         if (type == views::ViewTypeTrace)
 157                 // This view will be the main view if there's no main bar yet
 158                 v = make_shared<views::trace::View>(session,
 159                         (main_bar ? false : true), dock_main);
 160
 161         if (!v)
 162                 return nullptr;
 163
 164         view_docks_[dock] = v;
 165         session.register_view(v);
 166
 167         dock_main->setCentralWidget(v.get());
 168         dock->setWidget(dock_main);
 169
 170         dock->setContextMenuPolicy(Qt::PreventContextMenu);
 171         dock->setFeatures(QDockWidget::DockWidgetMovable |
 172                 QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetClosable);
 173
 174         QAbstractButton *close_btn =
 175                 dock->findChildren<QAbstractButton*>
 176                         ("qt_dockwidget_closebutton").front();
 177
 178         connect(close_btn, SIGNAL(clicked(bool)),
 179                 this, SLOT(on_view_close_clicked()));
 180
 181         connect(&session, SIGNAL(trigger_event(int, util::Timestamp)),
 182                 qobject_cast<views::ViewBase*>(v.get()),
 183                 SLOT(trigger_event(int, util::Timestamp)));
 184
 185         if (type == views::ViewTypeTrace) {
 186                 views::trace::View *tv =
 187                         qobject_cast<views::trace::View*>(v.get());
 188
 189                 tv->enable_colored_bg(settings.value(GlobalSettings::Key_View_ColoredBG).toBool());
 190                 tv->enable_show_sampling_points(settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool());
 191                 tv->enable_show_analog_minor_grid(settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool());
 192
 193                 if (!main_bar) {
 194                         /* Initial view, create the main bar */
 195                         main_bar = make_shared<MainBar>(session, this, tv);
 196                         dock_main->addToolBar(main_bar.get());
 197                         session.set_main_bar(main_bar);
 198
 199                         connect(main_bar.get(), SIGNAL(new_view(Session*)),
 200                                 this, SLOT(on_new_view(Session*)));
 201
 202                         main_bar->action_view_show_cursors()->setChecked(tv->cursors_shown());
 203
 204                         /* For the main view we need to prevent the dock widget from
 205                          * closing itself when its close button is clicked. This is
 206                          * so we can confirm with the user first. Regular views don't
 207                          * need this */
 208                         close_btn->disconnect(SIGNAL(clicked()), dock, SLOT(close()));
 209                 } else {
 210                         /* Additional view, create a standard bar */
 211                         pv::views::trace::StandardBar *standard_bar =
 212                                 new pv::views::trace::StandardBar(session, this, tv);
 213                         dock_main->addToolBar(standard_bar);
 214
 215                         standard_bar->action_view_show_cursors()->setChecked(tv->cursors_shown());
 216                 }
 217         }
 218
 219         return v;
 220 }
 221
 222 void MainWindow::remove_view(shared_ptr<views::ViewBase> view)
 223 {
 224         for (shared_ptr<Session> session : sessions_) {
 225                 if (!session->has_view(view))
 226                         continue;
 227
 228                 // Find the dock the view is contained in and remove it
 229                 for (auto entry : view_docks_)
 230                         if (entry.second == view) {
 231                                 // Remove the view from the session
 232                                 session->deregister_view(view);
 233
 234                                 // Remove the view from its parent; otherwise, Qt will
 235                                 // call deleteLater() on it, which causes a double free
 236                                 // since the shared_ptr in view_docks_ doesn't know
 237                                 // that Qt keeps a pointer to the view around
 238                                 view->setParent(nullptr);
 239
 240                                 // Delete the view's dock widget and all widgets inside it
 241                                 entry.first->deleteLater();
 242
 243                                 // Remove the dock widget from the list and stop iterating
 244                                 view_docks_.erase(entry.first);
 245                                 break;
 246                         }
 247         }
 248 }
 249
 250 shared_ptr<Session> MainWindow::add_session()
 251 {
 252         static int last_session_id = 1;
 253         QString name = tr("Session %1").arg(last_session_id++);
 254
 255         shared_ptr<Session> session = make_shared<Session>(device_manager_, name);
 256
 257         connect(session.get(), SIGNAL(add_view(const QString&, views::ViewType, Session*)),
 258                 this, SLOT(on_add_view(const QString&, views::ViewType, Session*)));
 259         connect(session.get(), SIGNAL(name_changed()),
 260                 this, SLOT(on_session_name_changed()));
 261         session_state_mapper_.setMapping(session.get(), session.get());
 262         connect(session.get(), SIGNAL(capture_state_changed(int)),
 263                 &session_state_mapper_, SLOT(map()));
 264
 265         sessions_.push_back(session);
 266
 267         QMainWindow *window = new QMainWindow();
 268         window->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
 269         session_windows_[session] = window;
 270
 271         int index = session_selector_.addTab(window, name);
 272         session_selector_.setCurrentIndex(index);
 273         last_focused_session_ = session;
 274
 275         window->setDockNestingEnabled(true);
 276
 277         shared_ptr<views::ViewBase> main_view =
 278                 add_view(name, views::ViewTypeTrace, *session);
 279
 280         return session;
 281 }
 282
 283 void MainWindow::remove_session(shared_ptr<Session> session)
 284 {
 285         // Determine the height of the button before it collapses
 286         int h = new_session_button_->height();
 287
 288         // Stop capture while the session still exists so that the UI can be
 289         // updated in case we're currently running. If so, this will schedule a
 290         // call to our on_capture_state_changed() slot for the next run of the
 291         // event loop. We need to have this executed immediately or else it will
 292         // be dismissed since the session object will be deleted by the time we
 293         // leave this method and the event loop gets a chance to run again.
 294         session->stop_capture();
 295         QApplication::processEvents();
 296
 297         for (shared_ptr<views::ViewBase> view : session->views())
 298                 remove_view(view);
 299
 300         QMainWindow *window = session_windows_.at(session);
 301         session_selector_.removeTab(session_selector_.indexOf(window));
 302
 303         session_windows_.erase(session);
 304
 305         if (last_focused_session_ == session)
 306                 last_focused_session_.reset();
 307
 308         // Remove the session from our list of sessions (which also destroys it)
 309         sessions_.remove_if([&](shared_ptr<Session> s) {
 310                 return s == session; });
 311
 312         if (sessions_.empty()) {
 313                 // When there are no more tabs, the height of the QTabWidget
 314                 // drops to zero. We must prevent this to keep the static
 315                 // widgets visible
 316                 for (QWidget *w : static_tab_widget_->findChildren<QWidget*>())
 317                         w->setMinimumHeight(h);
 318
 319                 int margin = static_tab_widget_->layout()->contentsMargins().bottom();
 320                 static_tab_widget_->setMinimumHeight(h + 2 * margin);
 321                 session_selector_.setMinimumHeight(h + 2 * margin);
 322
 323                 // Update the window title if there is no view left to
 324                 // generate focus change events
 325                 setWindowTitle(WindowTitle);
 326         }
 327 }
 328
 329 void MainWindow::add_session_with_file(string open_file_name,
 330         string open_file_format)
 331 {
 332         shared_ptr<Session> session = add_session();
 333         session->load_init_file(open_file_name, open_file_format);
 334 }
 335
 336 void MainWindow::add_default_session()
 337 {
 338         // Only add the default session if there would be no session otherwise
 339         if (sessions_.size() > 0)
 340                 return;
 341
 342         shared_ptr<Session> session = add_session();
 343
 344         // Check the list of available devices. Prefer the one that was
 345         // found with user supplied scan specs (if applicable). Then try
 346         // one of the auto detected devices that are not the demo device.
 347         // Pick demo in the absence of "genuine" hardware devices.
 348         shared_ptr<devices::HardwareDevice> user_device, other_device, demo_device;
 349         for (shared_ptr<devices::HardwareDevice> dev : device_manager_.devices()) {
 350                 if (dev == device_manager_.user_spec_device()) {
 351                         user_device = dev;
 352                 } else if (dev->hardware_device()->driver()->name() == "demo") {
 353                         demo_device = dev;
 354                 } else {
 355                         other_device = dev;
 356                 }
 357         }
 358         if (user_device)
 359                 session->select_device(user_device);
 360         else if (other_device)
 361                 session->select_device(other_device);
 362         else
 363                 session->select_device(demo_device);
 364 }
 365
 366 void MainWindow::save_sessions()
 367 {
 368         QSettings settings;
 369         int id = 0;
 370
 371         for (shared_ptr<Session> session : sessions_) {
 372                 // Ignore sessions using the demo device or no device at all
 373                 if (session->device()) {
 374                         shared_ptr<devices::HardwareDevice> device =
 375                                 dynamic_pointer_cast< devices::HardwareDevice >
 376                                 (session->device());
 377
 378                         if (device &&
 379                                 device->hardware_device()->driver()->name() == "demo")
 380                                 continue;
 381
 382                         settings.beginGroup("Session" + QString::number(id++));
 383                         settings.remove("");  // Remove all keys in this group
 384                         session->save_settings(settings);
 385                         settings.endGroup();
 386                 }
 387         }
 388
 389         settings.setValue("sessions", id);
 390 }
 391
 392 void MainWindow::restore_sessions()
 393 {
 394         QSettings settings;
 395         int i, session_count;
 396
 397         session_count = settings.value("sessions", 0).toInt();
 398
 399         for (i = 0; i < session_count; i++) {
 400                 settings.beginGroup("Session" + QString::number(i));
 401                 shared_ptr<Session> session = add_session();
 402                 session->restore_settings(settings);
 403                 settings.endGroup();
 404         }
 405 }
 406
 407 void MainWindow::on_setting_changed(const QString &key, const QVariant &value)
 408 {
 409         if (key == GlobalSettings::Key_View_ColoredBG)
 410                 on_settingViewColoredBg_changed(value);
 411
 412         if (key == GlobalSettings::Key_View_ShowSamplingPoints)
 413                 on_settingViewShowSamplingPoints_changed(value);
 414
 415         if (key == GlobalSettings::Key_View_ShowAnalogMinorGrid)
 416                 on_settingViewShowAnalogMinorGrid_changed(value);
 417 }
 418
 419 void MainWindow::setup_ui()
 420 {
 421         setObjectName(QString::fromUtf8("MainWindow"));
 422
 423         setCentralWidget(&session_selector_);
 424
 425         // Set the window icon
 426         QIcon icon;
 427         icon.addFile(QString(":/icons/pulseview.png"));
 428         setWindowIcon(icon);
 429
 430         view_sticky_scrolling_shortcut_ = new QShortcut(QKeySequence(Qt::Key_S), this, SLOT(on_view_sticky_scrolling_shortcut()));
 431         view_sticky_scrolling_shortcut_->setAutoRepeat(false);
 432
 433         view_show_sampling_points_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Period), this, SLOT(on_view_show_sampling_points_shortcut()));
 434         view_show_sampling_points_shortcut_->setAutoRepeat(false);
 435
 436         view_show_analog_minor_grid_shortcut_ = new QShortcut(QKeySequence(Qt::Key_G), this, SLOT(on_view_show_analog_minor_grid_shortcut()));
 437         view_show_analog_minor_grid_shortcut_->setAutoRepeat(false);
 438
 439         view_colored_bg_shortcut_ = new QShortcut(QKeySequence(Qt::Key_B), this, SLOT(on_view_colored_bg_shortcut()));
 440         view_colored_bg_shortcut_->setAutoRepeat(false);
 441
 442         // Set up the tab area
 443         new_session_button_ = new QToolButton();
 444         new_session_button_->setIcon(QIcon::fromTheme("document-new",
 445                 QIcon(":/icons/document-new.png")));
 446         new_session_button_->setToolTip(tr("Create New Session"));
 447         new_session_button_->setAutoRaise(true);
 448
 449         run_stop_button_ = new QToolButton();
 450         run_stop_button_->setAutoRaise(true);
 451         run_stop_button_->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 452         run_stop_button_->setToolTip(tr("Start/Stop Acquisition"));
 453
 454         run_stop_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Space), run_stop_button_, SLOT(click()));
 455         run_stop_shortcut_->setAutoRepeat(false);
 456
 457         settings_button_ = new QToolButton();
 458         settings_button_->setIcon(QIcon::fromTheme("preferences-system",
 459                 QIcon(":/icons/preferences-system.png")));
 460         settings_button_->setToolTip(tr("Settings"));
 461         settings_button_->setAutoRaise(true);
 462
 463         QFrame *separator1 = new QFrame();
 464         separator1->setFrameStyle(QFrame::VLine | QFrame::Raised);
 465         QFrame *separator2 = new QFrame();
 466         separator2->setFrameStyle(QFrame::VLine | QFrame::Raised);
 467
 468         QHBoxLayout* layout = new QHBoxLayout();
 469         layout->setContentsMargins(2, 2, 2, 2);
 470         layout->addWidget(new_session_button_);
 471         layout->addWidget(separator1);
 472         layout->addWidget(run_stop_button_);
 473         layout->addWidget(separator2);
 474         layout->addWidget(settings_button_);
 475
 476         static_tab_widget_ = new QWidget();
 477         static_tab_widget_->setLayout(layout);
 478
 479         session_selector_.setCornerWidget(static_tab_widget_, Qt::TopLeftCorner);
 480         session_selector_.setTabsClosable(true);
 481
 482         close_application_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this, SLOT(close()));
 483         close_application_shortcut_->setAutoRepeat(false);
 484
 485         close_current_tab_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this, SLOT(on_close_current_tab()));
 486
 487         connect(new_session_button_, SIGNAL(clicked(bool)),
 488                 this, SLOT(on_new_session_clicked()));
 489         connect(run_stop_button_, SIGNAL(clicked(bool)),
 490                 this, SLOT(on_run_stop_clicked()));
 491         connect(&session_state_mapper_, SIGNAL(mapped(QObject*)),
 492                 this, SLOT(on_capture_state_changed(QObject*)));
 493         connect(settings_button_, SIGNAL(clicked(bool)),
 494                 this, SLOT(on_settings_clicked()));
 495
 496         connect(&session_selector_, SIGNAL(tabCloseRequested(int)),
 497                 this, SLOT(on_tab_close_requested(int)));
 498         connect(&session_selector_, SIGNAL(currentChanged(int)),
 499                 this, SLOT(on_tab_changed(int)));
 500
 501
 502         connect(static_cast<QApplication *>(QCoreApplication::instance()),
 503                 SIGNAL(focusChanged(QWidget*, QWidget*)),
 504                 this, SLOT(on_focus_changed()));
 505 }
 506
 507 void MainWindow::save_ui_settings()
 508 {
 509         QSettings settings;
 510
 511         settings.beginGroup("MainWindow");
 512         settings.setValue("state", saveState());
 513         settings.setValue("geometry", saveGeometry());
 514         settings.endGroup();
 515 }
 516
 517 void MainWindow::restore_ui_settings()
 518 {
 519         QSettings settings;
 520
 521         settings.beginGroup("MainWindow");
 522
 523         if (settings.contains("geometry")) {
 524                 restoreGeometry(settings.value("geometry").toByteArray());
 525                 restoreState(settings.value("state").toByteArray());
 526         } else
 527                 resize(1000, 720);
 528
 529         settings.endGroup();
 530 }
 531
 532 shared_ptr<Session> MainWindow::get_tab_session(int index) const
 533 {
 534         // Find the session that belongs to the tab's main window
 535         for (auto entry : session_windows_)
 536                 if (entry.second == session_selector_.widget(index))
 537                         return entry.first;
 538
 539         return nullptr;
 540 }
 541
 542 void MainWindow::closeEvent(QCloseEvent *event)
 543 {
 544         bool data_saved = true;
 545
 546         for (auto entry : session_windows_)
 547                 if (!entry.first->data_saved())
 548                         data_saved = false;
 549
 550         if (!data_saved && (QMessageBox::question(this, tr("Confirmation"),
 551                 tr("There is unsaved data. Close anyway?"),
 552                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::No)) {
 553                 event->ignore();
 554         } else {
 555                 save_ui_settings();
 556                 save_sessions();
 557                 event->accept();
 558         }
 559 }
 560
 561 QMenu* MainWindow::createPopupMenu()
 562 {
 563         return nullptr;
 564 }
 565
 566 bool MainWindow::restoreState(const QByteArray &state, int version)
 567 {
 568         (void)state;
 569         (void)version;
 570
 571         // Do nothing. We don't want Qt to handle this, or else it
 572         // will try to restore all the dock widgets and create havoc.
 573
 574         return false;
 575 }
 576
 577 void MainWindow::on_add_view(const QString &title, views::ViewType type,
 578         Session *session)
 579 {
 580         // We get a pointer and need a reference
 581         for (shared_ptr<Session> s : sessions_)
 582                 if (s.get() == session)
 583                         add_view(title, type, *s);
 584 }
 585
 586 void MainWindow::on_focus_changed()
 587 {
 588         shared_ptr<views::ViewBase> view = get_active_view();
 589
 590         if (view) {
 591                 for (shared_ptr<Session> session : sessions_) {
 592                         if (session->has_view(view)) {
 593                                 if (session != last_focused_session_) {
 594                                         // Activate correct tab if necessary
 595                                         shared_ptr<Session> tab_session = get_tab_session(
 596                                                 session_selector_.currentIndex());
 597                                         if (tab_session != session)
 598                                                 session_selector_.setCurrentWidget(
 599                                                         session_windows_.at(session));
 600
 601                                         on_focused_session_changed(session);
 602                                 }
 603
 604                                 break;
 605                         }
 606                 }
 607         }
 608
 609         if (sessions_.empty())
 610                 setWindowTitle(WindowTitle);
 611 }
 612
 613 void MainWindow::on_focused_session_changed(shared_ptr<Session> session)
 614 {
 615         last_focused_session_ = session;
 616
 617         setWindowTitle(session->name() + " - " + WindowTitle);
 618
 619         // Update the state of the run/stop button, too
 620         on_capture_state_changed(session.get());
 621 }
 622
 623 void MainWindow::on_new_session_clicked()
 624 {
 625         add_session();
 626 }
 627
 628 void MainWindow::on_run_stop_clicked()
 629 {
 630         shared_ptr<Session> session = last_focused_session_;
 631
 632         if (!session)
 633                 return;
 634
 635         switch (session->get_capture_state()) {
 636         case Session::Stopped:
 637                 session->start_capture([&](QString message) {
 638                         show_session_error("Capture failed", message); });
 639                 break;
 640         case Session::AwaitingTrigger:
 641         case Session::Running:
 642                 session->stop_capture();
 643                 break;
 644         }
 645 }
 646
 647 void MainWindow::on_settings_clicked()
 648 {
 649         dialogs::Settings dlg(device_manager_);
 650         dlg.exec();
 651 }
 652
 653 void MainWindow::on_session_name_changed()
 654 {
 655         // Update the corresponding dock widget's name(s)
 656         Session *session = qobject_cast<Session*>(QObject::sender());
 657         assert(session);
 658
 659         for (shared_ptr<views::ViewBase> view : session->views()) {
 660                 // Get the dock that contains the view
 661                 for (auto entry : view_docks_)
 662                         if (entry.second == view) {
 663                                 entry.first->setObjectName(session->name());
 664                                 entry.first->setWindowTitle(session->name());
 665                         }
 666         }
 667
 668         // Update the tab widget by finding the main window and the tab from that
 669         for (auto entry : session_windows_)
 670                 if (entry.first.get() == session) {
 671                         QMainWindow *window = entry.second;
 672                         const int index = session_selector_.indexOf(window);
 673                         session_selector_.setTabText(index, session->name());
 674                 }
 675
 676         // Refresh window title if the affected session has focus
 677         if (session == last_focused_session_.get())
 678                 setWindowTitle(session->name() + " - " + WindowTitle);
 679 }
 680
 681 void MainWindow::on_capture_state_changed(QObject *obj)
 682 {
 683         Session *caller = qobject_cast<Session*>(obj);
 684
 685         // Ignore if caller is not the currently focused session
 686         // unless there is only one session
 687         if ((sessions_.size() > 1) && (caller != last_focused_session_.get()))
 688                 return;
 689
 690         int state = caller->get_capture_state();
 691
 692         const QIcon *icons[] = {&icon_grey_, &icon_red_, &icon_green_};
 693         run_stop_button_->setIcon(*icons[state]);
 694         run_stop_button_->setText((state == pv::Session::Stopped) ?
 695                 tr("Run") : tr("Stop"));
 696 }
 697
 698 void MainWindow::on_new_view(Session *session)
 699 {
 700         // We get a pointer and need a reference
 701         for (shared_ptr<Session> s : sessions_)
 702                 if (s.get() == session)
 703                         add_view(session->name(), views::ViewTypeTrace, *s);
 704 }
 705
 706 void MainWindow::on_view_close_clicked()
 707 {
 708         // Find the dock widget that contains the close button that was clicked
 709         QObject *w = QObject::sender();
 710         QDockWidget *dock = nullptr;
 711
 712         while (w) {
 713             dock = qobject_cast<QDockWidget*>(w);
 714             if (dock)
 715                 break;
 716             w = w->parent();
 717         }
 718
 719         // Get the view contained in the dock widget
 720         shared_ptr<views::ViewBase> view;
 721
 722         for (auto entry : view_docks_)
 723                 if (entry.first == dock)
 724                         view = entry.second;
 725
 726         // Deregister the view
 727         for (shared_ptr<Session> session : sessions_) {
 728                 if (!session->has_view(view))
 729                         continue;
 730
 731                 // Also destroy the entire session if its main view is closing...
 732                 if (view == session->main_view()) {
 733                         // ...but only if data is saved or the user confirms closing
 734                         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
 735                                 tr("This session contains unsaved data. Close it anyway?"),
 736                                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
 737                                 remove_session(session);
 738                         break;
 739                 } else
 740                         // All other views can be closed at any time as no data will be lost
 741                         remove_view(view);
 742         }
 743 }
 744
 745 void MainWindow::on_tab_changed(int index)
 746 {
 747         shared_ptr<Session> session = get_tab_session(index);
 748
 749         if (session)
 750                 on_focused_session_changed(session);
 751 }
 752
 753 void MainWindow::on_tab_close_requested(int index)
 754 {
 755         shared_ptr<Session> session = get_tab_session(index);
 756
 757         if (!session)
 758                 return;
 759
 760         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
 761                 tr("This session contains unsaved data. Close it anyway?"),
 762                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
 763                 remove_session(session);
 764 }
 765
 766 void MainWindow::on_view_colored_bg_shortcut()
 767 {
 768         GlobalSettings settings;
 769
 770         bool state = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
 771         settings.setValue(GlobalSettings::Key_View_ColoredBG, !state);
 772 }
 773
 774 void MainWindow::on_view_sticky_scrolling_shortcut()
 775 {
 776         GlobalSettings settings;
 777
 778         bool state = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
 779         settings.setValue(GlobalSettings::Key_View_StickyScrolling, !state);
 780 }
 781
 782 void MainWindow::on_view_show_sampling_points_shortcut()
 783 {
 784         GlobalSettings settings;
 785
 786         bool state = settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();
 787         settings.setValue(GlobalSettings::Key_View_ShowSamplingPoints, !state);
 788 }
 789
 790 void MainWindow::on_view_show_analog_minor_grid_shortcut()
 791 {
 792         GlobalSettings settings;
 793
 794         bool state = settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool();
 795         settings.setValue(GlobalSettings::Key_View_ShowAnalogMinorGrid, !state);
 796 }
 797
 798 void MainWindow::on_settingViewColoredBg_changed(const QVariant new_value)
 799 {
 800         bool state = new_value.toBool();
 801
 802         for (auto entry : view_docks_) {
 803                 shared_ptr<views::ViewBase> viewbase = entry.second;
 804
 805                 // Only trace views have this setting
 806                 views::trace::View* view =
 807                                 qobject_cast<views::trace::View*>(viewbase.get());
 808                 if (view)
 809                         view->enable_colored_bg(state);
 810         }
 811 }
 812
 813 void MainWindow::on_settingViewShowSamplingPoints_changed(const QVariant new_value)
 814 {
 815         bool state = new_value.toBool();
 816
 817         for (auto entry : view_docks_) {
 818                 shared_ptr<views::ViewBase> viewbase = entry.second;
 819
 820                 // Only trace views have this setting
 821                 views::trace::View* view =
 822                                 qobject_cast<views::trace::View*>(viewbase.get());
 823                 if (view)
 824                         view->enable_show_sampling_points(state);
 825         }
 826 }
 827
 828 void MainWindow::on_settingViewShowAnalogMinorGrid_changed(const QVariant new_value)
 829 {
 830         bool state = new_value.toBool();
 831
 832         for (auto entry : view_docks_) {
 833                 shared_ptr<views::ViewBase> viewbase = entry.second;
 834
 835                 // Only trace views have this setting
 836                 views::trace::View* view =
 837                                 qobject_cast<views::trace::View*>(viewbase.get());
 838                 if (view)
 839                         view->enable_show_analog_minor_grid(state);
 840         }
 841 }
 842
 843 void MainWindow::on_close_current_tab()
 844 {
 845         int tab = session_selector_.currentIndex();
 846
 847         on_tab_close_requested(tab);
 848 }
 849
 850 } // namespace pv