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 <QDockWidget>
  34 #include <QHBoxLayout>
  35 #include <QMessageBox>
  36 #include <QSettings>
  37 #include <QShortcut>
  38 #include <QWidget>
  39
  40 #include "mainwindow.hpp"
  41
  42 #include "devicemanager.hpp"
  43 #include "devices/hardwaredevice.hpp"
  44 #include "dialogs/settings.hpp"
  45 #include "globalsettings.hpp"
  46 #include "toolbars/mainbar.hpp"
  47 #include "util.hpp"
  48 #include "views/trace/view.hpp"
  49 #include "views/trace/standardbar.hpp"
  50
  51 #include <libsigrokcxx/libsigrokcxx.hpp>
  52
  53 using std::dynamic_pointer_cast;
  54 using std::make_shared;
  55 using std::shared_ptr;
  56 using std::string;
  57
  58 namespace pv {
  59
  60 namespace view {
  61 class ViewItem;
  62 }
  63
  64 using toolbars::MainBar;
  65
  66 const QString MainWindow::WindowTitle = tr("PulseView");
  67
  68 MainWindow::MainWindow(DeviceManager &device_manager, QWidget *parent) :
  69         QMainWindow(parent),
  70         device_manager_(device_manager),
  71         session_selector_(this),
  72         session_state_mapper_(this),
  73         icon_red_(":/icons/status-red.svg"),
  74         icon_green_(":/icons/status-green.svg"),
  75         icon_grey_(":/icons/status-grey.svg")
  76 {
  77         qRegisterMetaType<util::Timestamp>("util::Timestamp");
  78         qRegisterMetaType<uint64_t>("uint64_t");
  79
  80         GlobalSettings::add_change_handler(this);
  81
  82         setup_ui();
  83         restore_ui_settings();
  84 }
  85
  86 MainWindow::~MainWindow()
  87 {
  88         GlobalSettings::remove_change_handler(this);
  89
  90         while (!sessions_.empty())
  91                 remove_session(sessions_.front());
  92 }
  93
  94 shared_ptr<views::ViewBase> MainWindow::get_active_view() const
  95 {
  96         // If there's only one view, use it...
  97         if (view_docks_.size() == 1)
  98                 return view_docks_.begin()->second;
  99
 100         // ...otherwise find the dock widget the widget with focus is contained in
 101         QObject *w = QApplication::focusWidget();
 102         QDockWidget *dock = nullptr;
 103
 104         while (w) {
 105                 dock = qobject_cast<QDockWidget*>(w);
 106                 if (dock)
 107                         break;
 108                 w = w->parent();
 109         }
 110
 111         // Get the view contained in the dock widget
 112         for (auto entry : view_docks_)
 113                 if (entry.first == dock)
 114                         return entry.second;
 115
 116         return nullptr;
 117 }
 118
 119 shared_ptr<views::ViewBase> MainWindow::add_view(const QString &title,
 120         views::ViewType type, Session &session)
 121 {
 122         GlobalSettings settings;
 123         shared_ptr<views::ViewBase> v;
 124
 125         QMainWindow *main_window = nullptr;
 126         for (auto entry : session_windows_)
 127                 if (entry.first.get() == &session)
 128                         main_window = entry.second;
 129
 130         assert(main_window);
 131
 132         shared_ptr<MainBar> main_bar = session.main_bar();
 133
 134         QDockWidget* dock = new QDockWidget(title, main_window);
 135         dock->setObjectName(title);
 136         main_window->addDockWidget(Qt::TopDockWidgetArea, dock);
 137
 138         // Insert a QMainWindow into the dock widget to allow for a tool bar
 139         QMainWindow *dock_main = new QMainWindow(dock);
 140         dock_main->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
 141
 142         if (type == views::ViewTypeTrace)
 143                 // This view will be the main view if there's no main bar yet
 144                 v = make_shared<views::trace::View>(session,
 145                         (main_bar ? false : true), dock_main);
 146
 147         if (!v)
 148                 return nullptr;
 149
 150         view_docks_[dock] = v;
 151         session.register_view(v);
 152
 153         dock_main->setCentralWidget(v.get());
 154         dock->setWidget(dock_main);
 155
 156         dock->setContextMenuPolicy(Qt::PreventContextMenu);
 157         dock->setFeatures(QDockWidget::DockWidgetMovable |
 158                 QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetClosable);
 159
 160         QAbstractButton *close_btn =
 161                 dock->findChildren<QAbstractButton*>
 162                         ("qt_dockwidget_closebutton").front();
 163
 164         connect(close_btn, SIGNAL(clicked(bool)),
 165                 this, SLOT(on_view_close_clicked()));
 166
 167         connect(&session, SIGNAL(trigger_event(int, util::Timestamp)),
 168                 qobject_cast<views::ViewBase*>(v.get()),
 169                 SLOT(trigger_event(int, util::Timestamp)));
 170
 171         if (type == views::ViewTypeTrace) {
 172                 views::trace::View *tv =
 173                         qobject_cast<views::trace::View*>(v.get());
 174
 175                 tv->enable_coloured_bg(settings.value(GlobalSettings::Key_View_ColouredBG).toBool());
 176                 tv->enable_show_sampling_points(settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool());
 177                 tv->enable_show_analog_minor_grid(settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool());
 178
 179                 if (!main_bar) {
 180                         /* Initial view, create the main bar */
 181                         main_bar = make_shared<MainBar>(session, this, tv);
 182                         dock_main->addToolBar(main_bar.get());
 183                         session.set_main_bar(main_bar);
 184
 185                         connect(main_bar.get(), SIGNAL(new_view(Session*)),
 186                                 this, SLOT(on_new_view(Session*)));
 187
 188                         main_bar->action_view_show_cursors()->setChecked(tv->cursors_shown());
 189
 190                         /* For the main view we need to prevent the dock widget from
 191                          * closing itself when its close button is clicked. This is
 192                          * so we can confirm with the user first. Regular views don't
 193                          * need this */
 194                         close_btn->disconnect(SIGNAL(clicked()), dock, SLOT(close()));
 195                 } else {
 196                         /* Additional view, create a standard bar */
 197                         pv::views::trace::StandardBar *standard_bar =
 198                                 new pv::views::trace::StandardBar(session, this, tv);
 199                         dock_main->addToolBar(standard_bar);
 200
 201                         standard_bar->action_view_show_cursors()->setChecked(tv->cursors_shown());
 202                 }
 203         }
 204
 205         return v;
 206 }
 207
 208 void MainWindow::remove_view(shared_ptr<views::ViewBase> view)
 209 {
 210         for (shared_ptr<Session> session : sessions_) {
 211                 if (!session->has_view(view))
 212                         continue;
 213
 214                 // Find the dock the view is contained in and remove it
 215                 for (auto entry : view_docks_)
 216                         if (entry.second == view) {
 217                                 // Remove the view from the session
 218                                 session->deregister_view(view);
 219
 220                                 // Remove the view from its parent; otherwise, Qt will
 221                                 // call deleteLater() on it, which causes a double free
 222                                 // since the shared_ptr in view_docks_ doesn't know
 223                                 // that Qt keeps a pointer to the view around
 224                                 view->setParent(nullptr);
 225
 226                                 // Delete the view's dock widget and all widgets inside it
 227                                 entry.first->deleteLater();
 228
 229                                 // Remove the dock widget from the list and stop iterating
 230                                 view_docks_.erase(entry.first);
 231                                 break;
 232                         }
 233         }
 234 }
 235
 236 shared_ptr<Session> MainWindow::add_session()
 237 {
 238         static int last_session_id = 1;
 239         QString name = tr("Session %1").arg(last_session_id++);
 240
 241         shared_ptr<Session> session = make_shared<Session>(device_manager_, name);
 242
 243         connect(session.get(), SIGNAL(add_view(const QString&, views::ViewType, Session*)),
 244                 this, SLOT(on_add_view(const QString&, views::ViewType, Session*)));
 245         connect(session.get(), SIGNAL(name_changed()),
 246                 this, SLOT(on_session_name_changed()));
 247         session_state_mapper_.setMapping(session.get(), session.get());
 248         connect(session.get(), SIGNAL(capture_state_changed(int)),
 249                 &session_state_mapper_, SLOT(map()));
 250
 251         sessions_.push_back(session);
 252
 253         QMainWindow *window = new QMainWindow();
 254         window->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
 255         session_windows_[session] = window;
 256
 257         int index = session_selector_.addTab(window, name);
 258         session_selector_.setCurrentIndex(index);
 259         last_focused_session_ = session;
 260
 261         window->setDockNestingEnabled(true);
 262
 263         shared_ptr<views::ViewBase> main_view =
 264                 add_view(name, views::ViewTypeTrace, *session);
 265
 266         return session;
 267 }
 268
 269 void MainWindow::remove_session(shared_ptr<Session> session)
 270 {
 271         // Determine the height of the button before it collapses
 272         int h = new_session_button_->height();
 273
 274         // Stop capture while the session still exists so that the UI can be
 275         // updated in case we're currently running. If so, this will schedule a
 276         // call to our on_capture_state_changed() slot for the next run of the
 277         // event loop. We need to have this executed immediately or else it will
 278         // be dismissed since the session object will be deleted by the time we
 279         // leave this method and the event loop gets a chance to run again.
 280         session->stop_capture();
 281         QApplication::processEvents();
 282
 283         for (shared_ptr<views::ViewBase> view : session->views())
 284                 remove_view(view);
 285
 286         QMainWindow *window = session_windows_.at(session);
 287         session_selector_.removeTab(session_selector_.indexOf(window));
 288
 289         session_windows_.erase(session);
 290
 291         if (last_focused_session_ == session)
 292                 last_focused_session_.reset();
 293
 294         // Remove the session from our list of sessions (which also destroys it)
 295         sessions_.remove_if([&](shared_ptr<Session> s) {
 296                 return s == session; });
 297
 298         if (sessions_.empty()) {
 299                 // When there are no more tabs, the height of the QTabWidget
 300                 // drops to zero. We must prevent this to keep the static
 301                 // widgets visible
 302                 for (QWidget *w : static_tab_widget_->findChildren<QWidget*>())
 303                         w->setMinimumHeight(h);
 304
 305                 int margin = static_tab_widget_->layout()->contentsMargins().bottom();
 306                 static_tab_widget_->setMinimumHeight(h + 2 * margin);
 307                 session_selector_.setMinimumHeight(h + 2 * margin);
 308
 309                 // Update the window title if there is no view left to
 310                 // generate focus change events
 311                 setWindowTitle(WindowTitle);
 312         }
 313 }
 314
 315 void MainWindow::add_session_with_file(string open_file_name,
 316         string open_file_format)
 317 {
 318         shared_ptr<Session> session = add_session();
 319         session->load_init_file(open_file_name, open_file_format);
 320 }
 321
 322 void MainWindow::add_default_session()
 323 {
 324         // Only add the default session if there would be no session otherwise
 325         if (sessions_.size() > 0)
 326                 return;
 327
 328         shared_ptr<Session> session = add_session();
 329
 330         // Check the list of available devices. Prefer the one that was
 331         // found with user supplied scan specs (if applicable). Then try
 332         // one of the auto detected devices that are not the demo device.
 333         // Pick demo in the absence of "genuine" hardware devices.
 334         shared_ptr<devices::HardwareDevice> user_device, other_device, demo_device;
 335         for (shared_ptr<devices::HardwareDevice> dev : device_manager_.devices()) {
 336                 if (dev == device_manager_.user_spec_device()) {
 337                         user_device = dev;
 338                 } else if (dev->hardware_device()->driver()->name() == "demo") {
 339                         demo_device = dev;
 340                 } else {
 341                         other_device = dev;
 342                 }
 343         }
 344         if (user_device)
 345                 session->select_device(user_device);
 346         else if (other_device)
 347                 session->select_device(other_device);
 348         else
 349                 session->select_device(demo_device);
 350 }
 351
 352 void MainWindow::save_sessions()
 353 {
 354         QSettings settings;
 355         int id = 0;
 356
 357         for (shared_ptr<Session> session : sessions_) {
 358                 // Ignore sessions using the demo device or no device at all
 359                 if (session->device()) {
 360                         shared_ptr<devices::HardwareDevice> device =
 361                                 dynamic_pointer_cast< devices::HardwareDevice >
 362                                 (session->device());
 363
 364                         if (device &&
 365                                 device->hardware_device()->driver()->name() == "demo")
 366                                 continue;
 367
 368                         settings.beginGroup("Session" + QString::number(id++));
 369                         settings.remove("");  // Remove all keys in this group
 370                         session->save_settings(settings);
 371                         settings.endGroup();
 372                 }
 373         }
 374
 375         settings.setValue("sessions", id);
 376 }
 377
 378 void MainWindow::restore_sessions()
 379 {
 380         QSettings settings;
 381         int i, session_count;
 382
 383         session_count = settings.value("sessions", 0).toInt();
 384
 385         for (i = 0; i < session_count; i++) {
 386                 settings.beginGroup("Session" + QString::number(i));
 387                 shared_ptr<Session> session = add_session();
 388                 session->restore_settings(settings);
 389                 settings.endGroup();
 390         }
 391 }
 392
 393 void MainWindow::on_setting_changed(const QString &key, const QVariant &value)
 394 {
 395         if (key == GlobalSettings::Key_View_ColouredBG)
 396                 on_settingViewColouredBg_changed(value);
 397
 398         if (key == GlobalSettings::Key_View_ShowSamplingPoints)
 399                 on_settingViewShowSamplingPoints_changed(value);
 400
 401         if (key == GlobalSettings::Key_View_ShowAnalogMinorGrid)
 402                 on_settingViewShowAnalogMinorGrid_changed(value);
 403 }
 404
 405 void MainWindow::setup_ui()
 406 {
 407         setObjectName(QString::fromUtf8("MainWindow"));
 408
 409         setCentralWidget(&session_selector_);
 410
 411         // Set the window icon
 412         QIcon icon;
 413         icon.addFile(QString(":/icons/pulseview.png"));
 414         setWindowIcon(icon);
 415
 416         view_sticky_scrolling_shortcut_ = new QShortcut(QKeySequence(Qt::Key_S), this, SLOT(on_view_sticky_scrolling_shortcut()));
 417         view_sticky_scrolling_shortcut_->setAutoRepeat(false);
 418
 419         view_show_sampling_points_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Period), this, SLOT(on_view_show_sampling_points_shortcut()));
 420         view_show_sampling_points_shortcut_->setAutoRepeat(false);
 421
 422         view_show_analog_minor_grid_shortcut_ = new QShortcut(QKeySequence(Qt::Key_G), this, SLOT(on_view_show_analog_minor_grid_shortcut()));
 423         view_show_analog_minor_grid_shortcut_->setAutoRepeat(false);
 424
 425         view_coloured_bg_shortcut_ = new QShortcut(QKeySequence(Qt::Key_B), this, SLOT(on_view_coloured_bg_shortcut()));
 426         view_coloured_bg_shortcut_->setAutoRepeat(false);
 427
 428         // Set up the tab area
 429         new_session_button_ = new QToolButton();
 430         new_session_button_->setIcon(QIcon::fromTheme("document-new",
 431                 QIcon(":/icons/document-new.png")));
 432         new_session_button_->setToolTip(tr("Create New Session"));
 433         new_session_button_->setAutoRaise(true);
 434
 435         run_stop_button_ = new QToolButton();
 436         run_stop_button_->setAutoRaise(true);
 437         run_stop_button_->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 438         run_stop_button_->setToolTip(tr("Start/Stop Acquisition"));
 439
 440         run_stop_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Space), run_stop_button_, SLOT(click()));
 441         run_stop_shortcut_->setAutoRepeat(false);
 442
 443         settings_button_ = new QToolButton();
 444         settings_button_->setIcon(QIcon::fromTheme("preferences-system",
 445                 QIcon(":/icons/preferences-system.png")));
 446         settings_button_->setToolTip(tr("Settings"));
 447         settings_button_->setAutoRaise(true);
 448
 449         QFrame *separator1 = new QFrame();
 450         separator1->setFrameStyle(QFrame::VLine | QFrame::Raised);
 451         QFrame *separator2 = new QFrame();
 452         separator2->setFrameStyle(QFrame::VLine | QFrame::Raised);
 453
 454         QHBoxLayout* layout = new QHBoxLayout();
 455         layout->setContentsMargins(2, 2, 2, 2);
 456         layout->addWidget(new_session_button_);
 457         layout->addWidget(separator1);
 458         layout->addWidget(run_stop_button_);
 459         layout->addWidget(separator2);
 460         layout->addWidget(settings_button_);
 461
 462         static_tab_widget_ = new QWidget();
 463         static_tab_widget_->setLayout(layout);
 464
 465         session_selector_.setCornerWidget(static_tab_widget_, Qt::TopLeftCorner);
 466         session_selector_.setTabsClosable(true);
 467
 468         close_application_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this, SLOT(close()));
 469         close_application_shortcut_->setAutoRepeat(false);
 470
 471         close_current_tab_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this, SLOT(on_close_current_tab()));
 472
 473         connect(new_session_button_, SIGNAL(clicked(bool)),
 474                 this, SLOT(on_new_session_clicked()));
 475         connect(run_stop_button_, SIGNAL(clicked(bool)),
 476                 this, SLOT(on_run_stop_clicked()));
 477         connect(&session_state_mapper_, SIGNAL(mapped(QObject*)),
 478                 this, SLOT(on_capture_state_changed(QObject*)));
 479         connect(settings_button_, SIGNAL(clicked(bool)),
 480                 this, SLOT(on_settings_clicked()));
 481
 482         connect(&session_selector_, SIGNAL(tabCloseRequested(int)),
 483                 this, SLOT(on_tab_close_requested(int)));
 484         connect(&session_selector_, SIGNAL(currentChanged(int)),
 485                 this, SLOT(on_tab_changed(int)));
 486
 487
 488         connect(static_cast<QApplication *>(QCoreApplication::instance()),
 489                 SIGNAL(focusChanged(QWidget*, QWidget*)),
 490                 this, SLOT(on_focus_changed()));
 491 }
 492
 493 void MainWindow::save_ui_settings()
 494 {
 495         QSettings settings;
 496
 497         settings.beginGroup("MainWindow");
 498         settings.setValue("state", saveState());
 499         settings.setValue("geometry", saveGeometry());
 500         settings.endGroup();
 501 }
 502
 503 void MainWindow::restore_ui_settings()
 504 {
 505         QSettings settings;
 506
 507         settings.beginGroup("MainWindow");
 508
 509         if (settings.contains("geometry")) {
 510                 restoreGeometry(settings.value("geometry").toByteArray());
 511                 restoreState(settings.value("state").toByteArray());
 512         } else
 513                 resize(1000, 720);
 514
 515         settings.endGroup();
 516 }
 517
 518 shared_ptr<Session> MainWindow::get_tab_session(int index) const
 519 {
 520         // Find the session that belongs to the tab's main window
 521         for (auto entry : session_windows_)
 522                 if (entry.second == session_selector_.widget(index))
 523                         return entry.first;
 524
 525         return nullptr;
 526 }
 527
 528 void MainWindow::closeEvent(QCloseEvent *event)
 529 {
 530         bool data_saved = true;
 531
 532         for (auto entry : session_windows_)
 533                 if (!entry.first->data_saved())
 534                         data_saved = false;
 535
 536         if (!data_saved && (QMessageBox::question(this, tr("Confirmation"),
 537                 tr("There is unsaved data. Close anyway?"),
 538                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::No)) {
 539                 event->ignore();
 540         } else {
 541                 save_ui_settings();
 542                 save_sessions();
 543                 event->accept();
 544         }
 545 }
 546
 547 QMenu* MainWindow::createPopupMenu()
 548 {
 549         return nullptr;
 550 }
 551
 552 bool MainWindow::restoreState(const QByteArray &state, int version)
 553 {
 554         (void)state;
 555         (void)version;
 556
 557         // Do nothing. We don't want Qt to handle this, or else it
 558         // will try to restore all the dock widgets and create havoc.
 559
 560         return false;
 561 }
 562
 563 void MainWindow::session_error(const QString text, const QString info_text)
 564 {
 565         QMetaObject::invokeMethod(this, "show_session_error",
 566                 Qt::QueuedConnection, Q_ARG(QString, text),
 567                 Q_ARG(QString, info_text));
 568 }
 569
 570 void MainWindow::show_session_error(const QString text, const QString info_text)
 571 {
 572         QMessageBox msg(this);
 573         msg.setText(text);
 574         msg.setInformativeText(info_text);
 575         msg.setStandardButtons(QMessageBox::Ok);
 576         msg.setIcon(QMessageBox::Warning);
 577         msg.exec();
 578 }
 579
 580 void MainWindow::on_add_view(const QString &title, views::ViewType type,
 581         Session *session)
 582 {
 583         // We get a pointer and need a reference
 584         for (shared_ptr<Session> s : sessions_)
 585                 if (s.get() == session)
 586                         add_view(title, type, *s);
 587 }
 588
 589 void MainWindow::on_focus_changed()
 590 {
 591         shared_ptr<views::ViewBase> view = get_active_view();
 592
 593         if (view) {
 594                 for (shared_ptr<Session> session : sessions_) {
 595                         if (session->has_view(view)) {
 596                                 if (session != last_focused_session_) {
 597                                         // Activate correct tab if necessary
 598                                         shared_ptr<Session> tab_session = get_tab_session(
 599                                                 session_selector_.currentIndex());
 600                                         if (tab_session != session)
 601                                                 session_selector_.setCurrentWidget(
 602                                                         session_windows_.at(session));
 603
 604                                         on_focused_session_changed(session);
 605                                 }
 606
 607                                 break;
 608                         }
 609                 }
 610         }
 611
 612         if (sessions_.empty())
 613                 setWindowTitle(WindowTitle);
 614 }
 615
 616 void MainWindow::on_focused_session_changed(shared_ptr<Session> session)
 617 {
 618         last_focused_session_ = session;
 619
 620         setWindowTitle(session->name() + " - " + WindowTitle);
 621
 622         // Update the state of the run/stop button, too
 623         on_capture_state_changed(session.get());
 624 }
 625
 626 void MainWindow::on_new_session_clicked()
 627 {
 628         add_session();
 629 }
 630
 631 void MainWindow::on_run_stop_clicked()
 632 {
 633         shared_ptr<Session> session = last_focused_session_;
 634
 635         if (!session)
 636                 return;
 637
 638         switch (session->get_capture_state()) {
 639         case Session::Stopped:
 640                 session->start_capture([&](QString message) {
 641                         session_error("Capture failed", message); });
 642                 break;
 643         case Session::AwaitingTrigger:
 644         case Session::Running:
 645                 session->stop_capture();
 646                 break;
 647         }
 648 }
 649
 650 void MainWindow::on_settings_clicked()
 651 {
 652         dialogs::Settings dlg(device_manager_);
 653         dlg.exec();
 654 }
 655
 656 void MainWindow::on_session_name_changed()
 657 {
 658         // Update the corresponding dock widget's name(s)
 659         Session *session = qobject_cast<Session*>(QObject::sender());
 660         assert(session);
 661
 662         for (shared_ptr<views::ViewBase> view : session->views()) {
 663                 // Get the dock that contains the view
 664                 for (auto entry : view_docks_)
 665                         if (entry.second == view) {
 666                                 entry.first->setObjectName(session->name());
 667                                 entry.first->setWindowTitle(session->name());
 668                         }
 669         }
 670
 671         // Update the tab widget by finding the main window and the tab from that
 672         for (auto entry : session_windows_)
 673                 if (entry.first.get() == session) {
 674                         QMainWindow *window = entry.second;
 675                         const int index = session_selector_.indexOf(window);
 676                         session_selector_.setTabText(index, session->name());
 677                 }
 678
 679         // Refresh window title if the affected session has focus
 680         if (session == last_focused_session_.get())
 681                 setWindowTitle(session->name() + " - " + WindowTitle);
 682 }
 683
 684 void MainWindow::on_capture_state_changed(QObject *obj)
 685 {
 686         Session *caller = qobject_cast<Session*>(obj);
 687
 688         // Ignore if caller is not the currently focused session
 689         // unless there is only one session
 690         if ((sessions_.size() > 1) && (caller != last_focused_session_.get()))
 691                 return;
 692
 693         int state = caller->get_capture_state();
 694
 695         const QIcon *icons[] = {&icon_grey_, &icon_red_, &icon_green_};
 696         run_stop_button_->setIcon(*icons[state]);
 697         run_stop_button_->setText((state == pv::Session::Stopped) ?
 698                 tr("Run") : tr("Stop"));
 699 }
 700
 701 void MainWindow::on_new_view(Session *session)
 702 {
 703         // We get a pointer and need a reference
 704         for (shared_ptr<Session> s : sessions_)
 705                 if (s.get() == session)
 706                         add_view(session->name(), views::ViewTypeTrace, *s);
 707 }
 708
 709 void MainWindow::on_view_close_clicked()
 710 {
 711         // Find the dock widget that contains the close button that was clicked
 712         QObject *w = QObject::sender();
 713         QDockWidget *dock = nullptr;
 714
 715         while (w) {
 716             dock = qobject_cast<QDockWidget*>(w);
 717             if (dock)
 718                 break;
 719             w = w->parent();
 720         }
 721
 722         // Get the view contained in the dock widget
 723         shared_ptr<views::ViewBase> view;
 724
 725         for (auto entry : view_docks_)
 726                 if (entry.first == dock)
 727                         view = entry.second;
 728
 729         // Deregister the view
 730         for (shared_ptr<Session> session : sessions_) {
 731                 if (!session->has_view(view))
 732                         continue;
 733
 734                 // Also destroy the entire session if its main view is closing...
 735                 if (view == session->main_view()) {
 736                         // ...but only if data is saved or the user confirms closing
 737                         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
 738                                 tr("This session contains unsaved data. Close it anyway?"),
 739                                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
 740                                 remove_session(session);
 741                         break;
 742                 } else
 743                         // All other views can be closed at any time as no data will be lost
 744                         remove_view(view);
 745         }
 746 }
 747
 748 void MainWindow::on_tab_changed(int index)
 749 {
 750         shared_ptr<Session> session = get_tab_session(index);
 751
 752         if (session)
 753                 on_focused_session_changed(session);
 754 }
 755
 756 void MainWindow::on_tab_close_requested(int index)
 757 {
 758         shared_ptr<Session> session = get_tab_session(index);
 759
 760         if (!session)
 761                 return;
 762
 763         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
 764                 tr("This session contains unsaved data. Close it anyway?"),
 765                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
 766                 remove_session(session);
 767 }
 768
 769 void MainWindow::on_view_coloured_bg_shortcut()
 770 {
 771         GlobalSettings settings;
 772
 773         bool state = settings.value(GlobalSettings::Key_View_ColouredBG).toBool();
 774         settings.setValue(GlobalSettings::Key_View_ColouredBG, !state);
 775 }
 776
 777 void MainWindow::on_view_sticky_scrolling_shortcut()
 778 {
 779         GlobalSettings settings;
 780
 781         bool state = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
 782         settings.setValue(GlobalSettings::Key_View_StickyScrolling, !state);
 783 }
 784
 785 void MainWindow::on_view_show_sampling_points_shortcut()
 786 {
 787         GlobalSettings settings;
 788
 789         bool state = settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();
 790         settings.setValue(GlobalSettings::Key_View_ShowSamplingPoints, !state);
 791 }
 792
 793 void MainWindow::on_view_show_analog_minor_grid_shortcut()
 794 {
 795         GlobalSettings settings;
 796
 797         bool state = settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool();
 798         settings.setValue(GlobalSettings::Key_View_ShowAnalogMinorGrid, !state);
 799 }
 800
 801 void MainWindow::on_settingViewColouredBg_changed(const QVariant new_value)
 802 {
 803         bool state = new_value.toBool();
 804
 805         for (auto entry : view_docks_) {
 806                 shared_ptr<views::ViewBase> viewbase = entry.second;
 807
 808                 // Only trace views have this setting
 809                 views::trace::View* view =
 810                                 qobject_cast<views::trace::View*>(viewbase.get());
 811                 if (view)
 812                         view->enable_coloured_bg(state);
 813         }
 814 }
 815
 816 void MainWindow::on_settingViewShowSamplingPoints_changed(const QVariant new_value)
 817 {
 818         bool state = new_value.toBool();
 819
 820         for (auto entry : view_docks_) {
 821                 shared_ptr<views::ViewBase> viewbase = entry.second;
 822
 823                 // Only trace views have this setting
 824                 views::trace::View* view =
 825                                 qobject_cast<views::trace::View*>(viewbase.get());
 826                 if (view)
 827                         view->enable_show_sampling_points(state);
 828         }
 829 }
 830
 831 void MainWindow::on_settingViewShowAnalogMinorGrid_changed(const QVariant new_value)
 832 {
 833         bool state = new_value.toBool();
 834
 835         for (auto entry : view_docks_) {
 836                 shared_ptr<views::ViewBase> viewbase = entry.second;
 837
 838                 // Only trace views have this setting
 839                 views::trace::View* view =
 840                                 qobject_cast<views::trace::View*>(viewbase.get());
 841                 if (view)
 842                         view->enable_show_analog_minor_grid(state);
 843         }
 844 }
 845
 846 void MainWindow::on_close_current_tab()
 847 {
 848         int tab = session_selector_.currentIndex();
 849
 850         on_tab_close_requested(tab);
 851 }
 852
 853 } // namespace pv