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::bind;
  54 using std::dynamic_pointer_cast;
  55 using std::make_shared;
  56 using std::placeholders::_1;
  57 using std::shared_ptr;
  58 using std::string;
  59
  60 namespace pv {
  61
  62 namespace view {
  63 class ViewItem;
  64 }
  65
  66 using toolbars::MainBar;
  67
  68 const QString MainWindow::WindowTitle = tr("PulseView");
  69
  70 MainWindow::MainWindow(DeviceManager &device_manager, QWidget *parent) :
  71         QMainWindow(parent),
  72         device_manager_(device_manager),
  73         session_selector_(this),
  74         session_state_mapper_(this),
  75         icon_red_(":/icons/status-red.svg"),
  76         icon_green_(":/icons/status-green.svg"),
  77         icon_grey_(":/icons/status-grey.svg")
  78 {
  79         qRegisterMetaType<util::Timestamp>("util::Timestamp");
  80         qRegisterMetaType<uint64_t>("uint64_t");
  81
  82         GlobalSettings::add_change_handler(this);
  83
  84         GlobalSettings settings;
  85         settings.set_defaults_where_needed();
  86
  87         setup_ui();
  88         restore_ui_settings();
  89 }
  90
  91 MainWindow::~MainWindow()
  92 {
  93         GlobalSettings::remove_change_handler(this);
  94
  95         while (!sessions_.empty())
  96                 remove_session(sessions_.front());
  97 }
  98
  99 shared_ptr<views::ViewBase> MainWindow::get_active_view() const
 100 {
 101         // If there's only one view, use it...
 102         if (view_docks_.size() == 1)
 103                 return view_docks_.begin()->second;
 104
 105         // ...otherwise find the dock widget the widget with focus is contained in
 106         QObject *w = QApplication::focusWidget();
 107         QDockWidget *dock = nullptr;
 108
 109         while (w) {
 110                 dock = qobject_cast<QDockWidget*>(w);
 111                 if (dock)
 112                         break;
 113                 w = w->parent();
 114         }
 115
 116         // Get the view contained in the dock widget
 117         for (auto entry : view_docks_)
 118                 if (entry.first == dock)
 119                         return entry.second;
 120
 121         return nullptr;
 122 }
 123
 124 shared_ptr<views::ViewBase> MainWindow::add_view(const QString &title,
 125         views::ViewType type, Session &session)
 126 {
 127         GlobalSettings settings;
 128         shared_ptr<views::ViewBase> v;
 129
 130         QMainWindow *main_window = nullptr;
 131         for (auto entry : session_windows_)
 132                 if (entry.first.get() == &session)
 133                         main_window = entry.second;
 134
 135         assert(main_window);
 136
 137         shared_ptr<MainBar> main_bar = session.main_bar();
 138
 139         QDockWidget* dock = new QDockWidget(title, main_window);
 140         dock->setObjectName(title);
 141         main_window->addDockWidget(Qt::TopDockWidgetArea, dock);
 142
 143         // Insert a QMainWindow into the dock widget to allow for a tool bar
 144         QMainWindow *dock_main = new QMainWindow(dock);
 145         dock_main->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
 146
 147         if (type == views::ViewTypeTrace)
 148                 // This view will be the main view if there's no main bar yet
 149                 v = make_shared<views::trace::View>(session,
 150                         (main_bar ? false : true), dock_main);
 151
 152         if (!v)
 153                 return nullptr;
 154
 155         view_docks_[dock] = v;
 156         session.register_view(v);
 157
 158         dock_main->setCentralWidget(v.get());
 159         dock->setWidget(dock_main);
 160
 161         dock->setContextMenuPolicy(Qt::PreventContextMenu);
 162         dock->setFeatures(QDockWidget::DockWidgetMovable |
 163                 QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetClosable);
 164
 165         QAbstractButton *close_btn =
 166                 dock->findChildren<QAbstractButton*>
 167                         ("qt_dockwidget_closebutton").front();
 168
 169         connect(close_btn, SIGNAL(clicked(bool)),
 170                 this, SLOT(on_view_close_clicked()));
 171
 172         connect(&session, SIGNAL(trigger_event(int, util::Timestamp)),
 173                 qobject_cast<views::ViewBase*>(v.get()),
 174                 SLOT(trigger_event(int, util::Timestamp)));
 175
 176         if (type == views::ViewTypeTrace) {
 177                 views::trace::View *tv =
 178                         qobject_cast<views::trace::View*>(v.get());
 179
 180                 tv->enable_coloured_bg(settings.value(GlobalSettings::Key_View_ColouredBG).toBool());
 181                 tv->enable_show_sampling_points(settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool());
 182                 tv->enable_show_analog_minor_grid(settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool());
 183
 184                 if (!main_bar) {
 185                         /* Initial view, create the main bar */
 186                         main_bar = make_shared<MainBar>(session, this, tv);
 187                         dock_main->addToolBar(main_bar.get());
 188                         session.set_main_bar(main_bar);
 189
 190                         connect(main_bar.get(), SIGNAL(new_view(Session*)),
 191                                 this, SLOT(on_new_view(Session*)));
 192
 193                         main_bar->action_view_show_cursors()->setChecked(tv->cursors_shown());
 194
 195                         /* For the main view we need to prevent the dock widget from
 196                          * closing itself when its close button is clicked. This is
 197                          * so we can confirm with the user first. Regular views don't
 198                          * need this */
 199                         close_btn->disconnect(SIGNAL(clicked()), dock, SLOT(close()));
 200                 } else {
 201                         /* Additional view, create a standard bar */
 202                         pv::views::trace::StandardBar *standard_bar =
 203                                 new pv::views::trace::StandardBar(session, this, tv);
 204                         dock_main->addToolBar(standard_bar);
 205
 206                         standard_bar->action_view_show_cursors()->setChecked(tv->cursors_shown());
 207                 }
 208         }
 209
 210         return v;
 211 }
 212
 213 void MainWindow::remove_view(shared_ptr<views::ViewBase> view)
 214 {
 215         for (shared_ptr<Session> session : sessions_) {
 216                 if (!session->has_view(view))
 217                         continue;
 218
 219                 // Find the dock the view is contained in and remove it
 220                 for (auto entry : view_docks_)
 221                         if (entry.second == view) {
 222                                 // Remove the view from the session
 223                                 session->deregister_view(view);
 224
 225                                 // Remove the view from its parent; otherwise, Qt will
 226                                 // call deleteLater() on it, which causes a double free
 227                                 // since the shared_ptr in view_docks_ doesn't know
 228                                 // that Qt keeps a pointer to the view around
 229                                 view->setParent(nullptr);
 230
 231                                 // Delete the view's dock widget and all widgets inside it
 232                                 entry.first->deleteLater();
 233
 234                                 // Remove the dock widget from the list and stop iterating
 235                                 view_docks_.erase(entry.first);
 236                                 break;
 237                         }
 238         }
 239 }
 240
 241 shared_ptr<Session> MainWindow::add_session()
 242 {
 243         static int last_session_id = 1;
 244         QString name = tr("Session %1").arg(last_session_id++);
 245
 246         shared_ptr<Session> session = make_shared<Session>(device_manager_, name);
 247
 248         connect(session.get(), SIGNAL(add_view(const QString&, views::ViewType, Session*)),
 249                 this, SLOT(on_add_view(const QString&, views::ViewType, Session*)));
 250         connect(session.get(), SIGNAL(name_changed()),
 251                 this, SLOT(on_session_name_changed()));
 252         session_state_mapper_.setMapping(session.get(), session.get());
 253         connect(session.get(), SIGNAL(capture_state_changed(int)),
 254                 &session_state_mapper_, SLOT(map()));
 255
 256         sessions_.push_back(session);
 257
 258         QMainWindow *window = new QMainWindow();
 259         window->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
 260         session_windows_[session] = window;
 261
 262         int index = session_selector_.addTab(window, name);
 263         session_selector_.setCurrentIndex(index);
 264         last_focused_session_ = session;
 265
 266         window->setDockNestingEnabled(true);
 267
 268         shared_ptr<views::ViewBase> main_view =
 269                 add_view(name, views::ViewTypeTrace, *session);
 270
 271         return session;
 272 }
 273
 274 void MainWindow::remove_session(shared_ptr<Session> session)
 275 {
 276         // Determine the height of the button before it collapses
 277         int h = new_session_button_->height();
 278
 279         // Stop capture while the session still exists so that the UI can be
 280         // updated in case we're currently running. If so, this will schedule a
 281         // call to our on_capture_state_changed() slot for the next run of the
 282         // event loop. We need to have this executed immediately or else it will
 283         // be dismissed since the session object will be deleted by the time we
 284         // leave this method and the event loop gets a chance to run again.
 285         session->stop_capture();
 286         QApplication::processEvents();
 287
 288         for (shared_ptr<views::ViewBase> view : session->views())
 289                 remove_view(view);
 290
 291         QMainWindow *window = session_windows_.at(session);
 292         session_selector_.removeTab(session_selector_.indexOf(window));
 293
 294         session_windows_.erase(session);
 295
 296         if (last_focused_session_ == session)
 297                 last_focused_session_.reset();
 298
 299         // Remove the session from our list of sessions (which also destroys it)
 300         sessions_.remove_if([&](shared_ptr<Session> s) {
 301                 return s == session; });
 302
 303         if (sessions_.empty()) {
 304                 // When there are no more tabs, the height of the QTabWidget
 305                 // drops to zero. We must prevent this to keep the static
 306                 // widgets visible
 307                 for (QWidget *w : static_tab_widget_->findChildren<QWidget*>())
 308                         w->setMinimumHeight(h);
 309
 310                 int margin = static_tab_widget_->layout()->contentsMargins().bottom();
 311                 static_tab_widget_->setMinimumHeight(h + 2 * margin);
 312                 session_selector_.setMinimumHeight(h + 2 * margin);
 313
 314                 // Update the window title if there is no view left to
 315                 // generate focus change events
 316                 setWindowTitle(WindowTitle);
 317         }
 318 }
 319
 320 void MainWindow::add_session_with_file(string open_file_name,
 321         string open_file_format)
 322 {
 323         shared_ptr<Session> session = add_session();
 324         session->load_init_file(open_file_name, open_file_format);
 325 }
 326
 327 void MainWindow::add_default_session()
 328 {
 329         // Only add the default session if there would be no session otherwise
 330         if (sessions_.size() > 0)
 331                 return;
 332
 333         shared_ptr<Session> session = add_session();
 334
 335         // Check the list of available devices. Prefer the one that was
 336         // found with user supplied scan specs (if applicable). Then try
 337         // one of the auto detected devices that are not the demo device.
 338         // Pick demo in the absence of "genuine" hardware devices.
 339         shared_ptr<devices::HardwareDevice> user_device, other_device, demo_device;
 340         for (shared_ptr<devices::HardwareDevice> dev : device_manager_.devices()) {
 341                 if (dev == device_manager_.user_spec_device()) {
 342                         user_device = dev;
 343                 } else if (dev->hardware_device()->driver()->name() == "demo") {
 344                         demo_device = dev;
 345                 } else {
 346                         other_device = dev;
 347                 }
 348         }
 349         if (user_device)
 350                 session->select_device(user_device);
 351         else if (other_device)
 352                 session->select_device(other_device);
 353         else
 354                 session->select_device(demo_device);
 355 }
 356
 357 void MainWindow::save_sessions()
 358 {
 359         QSettings settings;
 360         int id = 0;
 361
 362         for (shared_ptr<Session> session : sessions_) {
 363                 // Ignore sessions using the demo device or no device at all
 364                 if (session->device()) {
 365                         shared_ptr<devices::HardwareDevice> device =
 366                                 dynamic_pointer_cast< devices::HardwareDevice >
 367                                 (session->device());
 368
 369                         if (device &&
 370                                 device->hardware_device()->driver()->name() == "demo")
 371                                 continue;
 372
 373                         settings.beginGroup("Session" + QString::number(id++));
 374                         settings.remove("");  // Remove all keys in this group
 375                         session->save_settings(settings);
 376                         settings.endGroup();
 377                 }
 378         }
 379
 380         settings.setValue("sessions", id);
 381 }
 382
 383 void MainWindow::restore_sessions()
 384 {
 385         QSettings settings;
 386         int i, session_count;
 387
 388         session_count = settings.value("sessions", 0).toInt();
 389
 390         for (i = 0; i < session_count; i++) {
 391                 settings.beginGroup("Session" + QString::number(i));
 392                 shared_ptr<Session> session = add_session();
 393                 session->restore_settings(settings);
 394                 settings.endGroup();
 395         }
 396 }
 397
 398 void MainWindow::on_setting_changed(const QString &key, const QVariant &value)
 399 {
 400         if (key == GlobalSettings::Key_View_ColouredBG)
 401                 on_settingViewColouredBg_changed(value);
 402
 403         if (key == GlobalSettings::Key_View_ShowSamplingPoints)
 404                 on_settingViewShowSamplingPoints_changed(value);
 405
 406         if (key == GlobalSettings::Key_View_ShowAnalogMinorGrid)
 407                 on_settingViewShowAnalogMinorGrid_changed(value);
 408 }
 409
 410 void MainWindow::setup_ui()
 411 {
 412         setObjectName(QString::fromUtf8("MainWindow"));
 413
 414         setCentralWidget(&session_selector_);
 415
 416         // Set the window icon
 417         QIcon icon;
 418         icon.addFile(QString(":/icons/pulseview.png"));
 419         setWindowIcon(icon);
 420
 421         view_sticky_scrolling_shortcut_ = new QShortcut(QKeySequence(Qt::Key_S), this, SLOT(on_view_sticky_scrolling_shortcut()));
 422         view_sticky_scrolling_shortcut_->setAutoRepeat(false);
 423
 424         view_show_sampling_points_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Period), this, SLOT(on_view_show_sampling_points_shortcut()));
 425         view_show_sampling_points_shortcut_->setAutoRepeat(false);
 426
 427         view_show_analog_minor_grid_shortcut_ = new QShortcut(QKeySequence(Qt::Key_G), this, SLOT(on_view_show_analog_minor_grid_shortcut()));
 428         view_show_analog_minor_grid_shortcut_->setAutoRepeat(false);
 429
 430         view_coloured_bg_shortcut_ = new QShortcut(QKeySequence(Qt::Key_B), this, SLOT(on_view_coloured_bg_shortcut()));
 431         view_coloured_bg_shortcut_->setAutoRepeat(false);
 432
 433         // Set up the tab area
 434         new_session_button_ = new QToolButton();
 435         new_session_button_->setIcon(QIcon::fromTheme("document-new",
 436                 QIcon(":/icons/document-new.png")));
 437         new_session_button_->setToolTip(tr("Create New Session"));
 438         new_session_button_->setAutoRaise(true);
 439
 440         run_stop_button_ = new QToolButton();
 441         run_stop_button_->setAutoRaise(true);
 442         run_stop_button_->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 443         run_stop_button_->setToolTip(tr("Start/Stop Acquisition"));
 444
 445         run_stop_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Space), run_stop_button_, SLOT(click()));
 446         run_stop_shortcut_->setAutoRepeat(false);
 447
 448         settings_button_ = new QToolButton();
 449         settings_button_->setIcon(QIcon::fromTheme("preferences-system",
 450                 QIcon(":/icons/preferences-system.png")));
 451         settings_button_->setToolTip(tr("Settings"));
 452         settings_button_->setAutoRaise(true);
 453
 454         QFrame *separator1 = new QFrame();
 455         separator1->setFrameStyle(QFrame::VLine | QFrame::Raised);
 456         QFrame *separator2 = new QFrame();
 457         separator2->setFrameStyle(QFrame::VLine | QFrame::Raised);
 458
 459         QHBoxLayout* layout = new QHBoxLayout();
 460         layout->setContentsMargins(2, 2, 2, 2);
 461         layout->addWidget(new_session_button_);
 462         layout->addWidget(separator1);
 463         layout->addWidget(run_stop_button_);
 464         layout->addWidget(separator2);
 465         layout->addWidget(settings_button_);
 466
 467         static_tab_widget_ = new QWidget();
 468         static_tab_widget_->setLayout(layout);
 469
 470         session_selector_.setCornerWidget(static_tab_widget_, Qt::TopLeftCorner);
 471         session_selector_.setTabsClosable(true);
 472
 473         close_application_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this, SLOT(close()));
 474         close_application_shortcut_->setAutoRepeat(false);
 475
 476         close_current_tab_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this, SLOT(on_close_current_tab()));
 477
 478         connect(new_session_button_, SIGNAL(clicked(bool)),
 479                 this, SLOT(on_new_session_clicked()));
 480         connect(run_stop_button_, SIGNAL(clicked(bool)),
 481                 this, SLOT(on_run_stop_clicked()));
 482         connect(&session_state_mapper_, SIGNAL(mapped(QObject*)),
 483                 this, SLOT(on_capture_state_changed(QObject*)));
 484         connect(settings_button_, SIGNAL(clicked(bool)),
 485                 this, SLOT(on_settings_clicked()));
 486
 487         connect(&session_selector_, SIGNAL(tabCloseRequested(int)),
 488                 this, SLOT(on_tab_close_requested(int)));
 489         connect(&session_selector_, SIGNAL(currentChanged(int)),
 490                 this, SLOT(on_tab_changed(int)));
 491
 492
 493         connect(static_cast<QApplication *>(QCoreApplication::instance()),
 494                 SIGNAL(focusChanged(QWidget*, QWidget*)),
 495                 this, SLOT(on_focus_changed()));
 496 }
 497
 498 void MainWindow::save_ui_settings()
 499 {
 500         QSettings settings;
 501
 502         settings.beginGroup("MainWindow");
 503         settings.setValue("state", saveState());
 504         settings.setValue("geometry", saveGeometry());
 505         settings.endGroup();
 506 }
 507
 508 void MainWindow::restore_ui_settings()
 509 {
 510         QSettings settings;
 511
 512         settings.beginGroup("MainWindow");
 513
 514         if (settings.contains("geometry")) {
 515                 restoreGeometry(settings.value("geometry").toByteArray());
 516                 restoreState(settings.value("state").toByteArray());
 517         } else
 518                 resize(1000, 720);
 519
 520         settings.endGroup();
 521 }
 522
 523 shared_ptr<Session> MainWindow::get_tab_session(int index) const
 524 {
 525         // Find the session that belongs to the tab's main window
 526         for (auto entry : session_windows_)
 527                 if (entry.second == session_selector_.widget(index))
 528                         return entry.first;
 529
 530         return nullptr;
 531 }
 532
 533 void MainWindow::closeEvent(QCloseEvent *event)
 534 {
 535         bool data_saved = true;
 536
 537         for (auto entry : session_windows_)
 538                 if (!entry.first->data_saved())
 539                         data_saved = false;
 540
 541         if (!data_saved && (QMessageBox::question(this, tr("Confirmation"),
 542                 tr("There is unsaved data. Close anyway?"),
 543                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::No)) {
 544                 event->ignore();
 545         } else {
 546                 save_ui_settings();
 547                 save_sessions();
 548                 event->accept();
 549         }
 550 }
 551
 552 QMenu* MainWindow::createPopupMenu()
 553 {
 554         return nullptr;
 555 }
 556
 557 bool MainWindow::restoreState(const QByteArray &state, int version)
 558 {
 559         (void)state;
 560         (void)version;
 561
 562         // Do nothing. We don't want Qt to handle this, or else it
 563         // will try to restore all the dock widgets and create havoc.
 564
 565         return false;
 566 }
 567
 568 void MainWindow::session_error(const QString text, const QString info_text)
 569 {
 570         QMetaObject::invokeMethod(this, "show_session_error",
 571                 Qt::QueuedConnection, Q_ARG(QString, text),
 572                 Q_ARG(QString, info_text));
 573 }
 574
 575 void MainWindow::show_session_error(const QString text, const QString info_text)
 576 {
 577         QMessageBox msg(this);
 578         msg.setText(text);
 579         msg.setInformativeText(info_text);
 580         msg.setStandardButtons(QMessageBox::Ok);
 581         msg.setIcon(QMessageBox::Warning);
 582         msg.exec();
 583 }
 584
 585 void MainWindow::on_add_view(const QString &title, views::ViewType type,
 586         Session *session)
 587 {
 588         // We get a pointer and need a reference
 589         for (shared_ptr<Session> s : sessions_)
 590                 if (s.get() == session)
 591                         add_view(title, type, *s);
 592 }
 593
 594 void MainWindow::on_focus_changed()
 595 {
 596         shared_ptr<views::ViewBase> view = get_active_view();
 597
 598         if (view) {
 599                 for (shared_ptr<Session> session : sessions_) {
 600                         if (session->has_view(view)) {
 601                                 if (session != last_focused_session_) {
 602                                         // Activate correct tab if necessary
 603                                         shared_ptr<Session> tab_session = get_tab_session(
 604                                                 session_selector_.currentIndex());
 605                                         if (tab_session != session)
 606                                                 session_selector_.setCurrentWidget(
 607                                                         session_windows_.at(session));
 608
 609                                         on_focused_session_changed(session);
 610                                 }
 611
 612                                 break;
 613                         }
 614                 }
 615         }
 616
 617         if (sessions_.empty())
 618                 setWindowTitle(WindowTitle);
 619 }
 620
 621 void MainWindow::on_focused_session_changed(shared_ptr<Session> session)
 622 {
 623         last_focused_session_ = session;
 624
 625         setWindowTitle(session->name() + " - " + WindowTitle);
 626
 627         // Update the state of the run/stop button, too
 628         on_capture_state_changed(session.get());
 629 }
 630
 631 void MainWindow::on_new_session_clicked()
 632 {
 633         add_session();
 634 }
 635
 636 void MainWindow::on_run_stop_clicked()
 637 {
 638         shared_ptr<Session> session = last_focused_session_;
 639
 640         if (!session)
 641                 return;
 642
 643         switch (session->get_capture_state()) {
 644         case Session::Stopped:
 645                 session->start_capture([&](QString message) {
 646                         session_error("Capture failed", message); });
 647                 break;
 648         case Session::AwaitingTrigger:
 649         case Session::Running:
 650                 session->stop_capture();
 651                 break;
 652         }
 653 }
 654
 655 void MainWindow::on_settings_clicked()
 656 {
 657         dialogs::Settings dlg(device_manager_);
 658         dlg.exec();
 659 }
 660
 661 void MainWindow::on_session_name_changed()
 662 {
 663         // Update the corresponding dock widget's name(s)
 664         Session *session = qobject_cast<Session*>(QObject::sender());
 665         assert(session);
 666
 667         for (shared_ptr<views::ViewBase> view : session->views()) {
 668                 // Get the dock that contains the view
 669                 for (auto entry : view_docks_)
 670                         if (entry.second == view) {
 671                                 entry.first->setObjectName(session->name());
 672                                 entry.first->setWindowTitle(session->name());
 673                         }
 674         }
 675
 676         // Update the tab widget by finding the main window and the tab from that
 677         for (auto entry : session_windows_)
 678                 if (entry.first.get() == session) {
 679                         QMainWindow *window = entry.second;
 680                         const int index = session_selector_.indexOf(window);
 681                         session_selector_.setTabText(index, session->name());
 682                 }
 683
 684         // Refresh window title if the affected session has focus
 685         if (session == last_focused_session_.get())
 686                 setWindowTitle(session->name() + " - " + WindowTitle);
 687 }
 688
 689 void MainWindow::on_capture_state_changed(QObject *obj)
 690 {
 691         Session *caller = qobject_cast<Session*>(obj);
 692
 693         // Ignore if caller is not the currently focused session
 694         // unless there is only one session
 695         if ((sessions_.size() > 1) && (caller != last_focused_session_.get()))
 696                 return;
 697
 698         int state = caller->get_capture_state();
 699
 700         const QIcon *icons[] = {&icon_grey_, &icon_red_, &icon_green_};
 701         run_stop_button_->setIcon(*icons[state]);
 702         run_stop_button_->setText((state == pv::Session::Stopped) ?
 703                 tr("Run") : tr("Stop"));
 704 }
 705
 706 void MainWindow::on_new_view(Session *session)
 707 {
 708         // We get a pointer and need a reference
 709         for (shared_ptr<Session> s : sessions_)
 710                 if (s.get() == session)
 711                         add_view(session->name(), views::ViewTypeTrace, *s);
 712 }
 713
 714 void MainWindow::on_view_close_clicked()
 715 {
 716         // Find the dock widget that contains the close button that was clicked
 717         QObject *w = QObject::sender();
 718         QDockWidget *dock = nullptr;
 719
 720         while (w) {
 721             dock = qobject_cast<QDockWidget*>(w);
 722             if (dock)
 723                 break;
 724             w = w->parent();
 725         }
 726
 727         // Get the view contained in the dock widget
 728         shared_ptr<views::ViewBase> view;
 729
 730         for (auto entry : view_docks_)
 731                 if (entry.first == dock)
 732                         view = entry.second;
 733
 734         // Deregister the view
 735         for (shared_ptr<Session> session : sessions_) {
 736                 if (!session->has_view(view))
 737                         continue;
 738
 739                 // Also destroy the entire session if its main view is closing...
 740                 if (view == session->main_view()) {
 741                         // ...but only if data is saved or the user confirms closing
 742                         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
 743                                 tr("This session contains unsaved data. Close it anyway?"),
 744                                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
 745                                 remove_session(session);
 746                         break;
 747                 } else
 748                         // All other views can be closed at any time as no data will be lost
 749                         remove_view(view);
 750         }
 751 }
 752
 753 void MainWindow::on_tab_changed(int index)
 754 {
 755         shared_ptr<Session> session = get_tab_session(index);
 756
 757         if (session)
 758                 on_focused_session_changed(session);
 759 }
 760
 761 void MainWindow::on_tab_close_requested(int index)
 762 {
 763         shared_ptr<Session> session = get_tab_session(index);
 764
 765         if (!session)
 766                 return;
 767
 768         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
 769                 tr("This session contains unsaved data. Close it anyway?"),
 770                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
 771                 remove_session(session);
 772 }
 773
 774 void MainWindow::on_view_coloured_bg_shortcut()
 775 {
 776         GlobalSettings settings;
 777
 778         bool state = settings.value(GlobalSettings::Key_View_ColouredBG).toBool();
 779         settings.setValue(GlobalSettings::Key_View_ColouredBG, !state);
 780 }
 781
 782 void MainWindow::on_view_sticky_scrolling_shortcut()
 783 {
 784         GlobalSettings settings;
 785
 786         bool state = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
 787         settings.setValue(GlobalSettings::Key_View_StickyScrolling, !state);
 788 }
 789
 790 void MainWindow::on_view_show_sampling_points_shortcut()
 791 {
 792         GlobalSettings settings;
 793
 794         bool state = settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();
 795         settings.setValue(GlobalSettings::Key_View_ShowSamplingPoints, !state);
 796 }
 797
 798 void MainWindow::on_view_show_analog_minor_grid_shortcut()
 799 {
 800         GlobalSettings settings;
 801
 802         bool state = settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool();
 803         settings.setValue(GlobalSettings::Key_View_ShowAnalogMinorGrid, !state);
 804 }
 805
 806 void MainWindow::on_settingViewColouredBg_changed(const QVariant new_value)
 807 {
 808         bool state = new_value.toBool();
 809
 810         for (auto entry : view_docks_) {
 811                 shared_ptr<views::ViewBase> viewbase = entry.second;
 812
 813                 // Only trace views have this setting
 814                 views::trace::View* view =
 815                                 qobject_cast<views::trace::View*>(viewbase.get());
 816                 if (view)
 817                         view->enable_coloured_bg(state);
 818         }
 819 }
 820
 821 void MainWindow::on_settingViewShowSamplingPoints_changed(const QVariant new_value)
 822 {
 823         bool state = new_value.toBool();
 824
 825         for (auto entry : view_docks_) {
 826                 shared_ptr<views::ViewBase> viewbase = entry.second;
 827
 828                 // Only trace views have this setting
 829                 views::trace::View* view =
 830                                 qobject_cast<views::trace::View*>(viewbase.get());
 831                 if (view)
 832                         view->enable_show_sampling_points(state);
 833         }
 834 }
 835
 836 void MainWindow::on_settingViewShowAnalogMinorGrid_changed(const QVariant new_value)
 837 {
 838         bool state = new_value.toBool();
 839
 840         for (auto entry : view_docks_) {
 841                 shared_ptr<views::ViewBase> viewbase = entry.second;
 842
 843                 // Only trace views have this setting
 844                 views::trace::View* view =
 845                                 qobject_cast<views::trace::View*>(viewbase.get());
 846                 if (view)
 847                         view->enable_show_analog_minor_grid(state);
 848         }
 849 }
 850
 851 void MainWindow::on_close_current_tab()
 852 {
 853         int tab = session_selector_.currentIndex();
 854
 855         on_tab_close_requested(tab);
 856 }
 857
 858 } // namespace pv