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 #ifdef ENABLE_DECODE
  53 #include "subwindows/decoder_selector/subwindow.hpp"
  54 #include "views/decoder_output/view.hpp"
  55 #endif
  56
  57 #include <libsigrokcxx/libsigrokcxx.hpp>
  58
  59 using std::dynamic_pointer_cast;
  60 using std::make_shared;
  61 using std::shared_ptr;
  62 using std::string;
  63
  64 namespace pv {
  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         setup_ui();
  80         restore_ui_settings();
  81 }
  82
  83 MainWindow::~MainWindow()
  84 {
  85         // Make sure we no longer hold any shared pointers to widgets after the
  86         // destructor finishes (goes for sessions and sub windows alike)
  87
  88         while (!sessions_.empty())
  89                 remove_session(sessions_.front());
  90
  91         sub_windows_.clear();
  92 }
  93
  94 void MainWindow::show_session_error(const QString text, const QString info_text)
  95 {
  96         // TODO Emulate noquote()
  97         qDebug() << "Notifying user of session error:" << info_text;
  98
  99         QMessageBox msg;
 100         msg.setText(text + "\n\n" + info_text);
 101         msg.setStandardButtons(QMessageBox::Ok);
 102         msg.setIcon(QMessageBox::Warning);
 103         msg.exec();
 104 }
 105
 106 shared_ptr<views::ViewBase> MainWindow::get_active_view() const
 107 {
 108         // If there's only one view, use it...
 109         if (view_docks_.size() == 1)
 110                 return view_docks_.begin()->second;
 111
 112         // ...otherwise find the dock widget the widget with focus is contained in
 113         QObject *w = QApplication::focusWidget();
 114         QDockWidget *dock = nullptr;
 115
 116         while (w) {
 117                 dock = qobject_cast<QDockWidget*>(w);
 118                 if (dock)
 119                         break;
 120                 w = w->parent();
 121         }
 122
 123         // Get the view contained in the dock widget
 124         for (auto& entry : view_docks_)
 125                 if (entry.first == dock)
 126                         return entry.second;
 127
 128         return nullptr;
 129 }
 130
 131 shared_ptr<views::ViewBase> MainWindow::add_view(views::ViewType type,
 132         Session &session)
 133 {
 134         GlobalSettings settings;
 135         shared_ptr<views::ViewBase> v;
 136
 137         QMainWindow *main_window = nullptr;
 138         for (auto& entry : session_windows_)
 139                 if (entry.first.get() == &session)
 140                         main_window = entry.second;
 141
 142         assert(main_window);
 143
 144         shared_ptr<MainBar> main_bar = session.main_bar();
 145
 146         // Only use the view type in the name if it's not the main view
 147         QString title;
 148         if (main_bar)
 149                 title = QString("%1 (%2)").arg(session.name()).arg(views::ViewTypeNames[type]);
 150         else
 151                 title = session.name();
 152
 153         QDockWidget* dock = new QDockWidget(title, main_window);
 154         dock->setObjectName(title);
 155         main_window->addDockWidget(Qt::TopDockWidgetArea, dock);
 156
 157         // Insert a QMainWindow into the dock widget to allow for a tool bar
 158         QMainWindow *dock_main = new QMainWindow(dock);
 159         dock_main->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
 160
 161         if (type == views::ViewTypeTrace)
 162                 // This view will be the main view if there's no main bar yet
 163                 v = make_shared<views::trace::View>(session, (main_bar ? false : true), dock_main);
 164 #ifdef ENABLE_DECODE
 165         if (type == views::ViewTypeDecoderOutput)
 166                 v = make_shared<views::decoder_output::View>(session, false, dock_main);
 167 #endif
 168
 169         if (!v)
 170                 return nullptr;
 171
 172         view_docks_[dock] = v;
 173         session.register_view(v);
 174
 175         dock_main->setCentralWidget(v.get());
 176         dock->setWidget(dock_main);
 177
 178         dock->setContextMenuPolicy(Qt::PreventContextMenu);
 179         dock->setFeatures(QDockWidget::DockWidgetMovable |
 180                 QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetClosable);
 181
 182         QAbstractButton *close_btn =
 183                 dock->findChildren<QAbstractButton*>("qt_dockwidget_closebutton")  // clazy:exclude=detaching-temporary
 184                         .front();
 185
 186         connect(close_btn, SIGNAL(clicked(bool)),
 187                 this, SLOT(on_view_close_clicked()));
 188
 189         connect(&session, SIGNAL(trigger_event(int, util::Timestamp)),
 190                 qobject_cast<views::ViewBase*>(v.get()),
 191                 SLOT(trigger_event(int, util::Timestamp)));
 192
 193         if (type == views::ViewTypeTrace) {
 194                 views::trace::View *tv =
 195                         qobject_cast<views::trace::View*>(v.get());
 196
 197                 if (!main_bar) {
 198                         /* Initial view, create the main bar */
 199                         main_bar = make_shared<MainBar>(session, this, tv);
 200                         dock_main->addToolBar(main_bar.get());
 201                         session.set_main_bar(main_bar);
 202
 203                         connect(main_bar.get(), SIGNAL(new_view(Session*, int)),
 204                                 this, SLOT(on_new_view(Session*, int)));
 205                         connect(main_bar.get(), SIGNAL(show_decoder_selector(Session*)),
 206                                 this, SLOT(on_show_decoder_selector(Session*)));
 207
 208                         main_bar->action_view_show_cursors()->setChecked(tv->cursors_shown());
 209
 210                         /* For the main view we need to prevent the dock widget from
 211                          * closing itself when its close button is clicked. This is
 212                          * so we can confirm with the user first. Regular views don't
 213                          * need this */
 214                         close_btn->disconnect(SIGNAL(clicked()), dock, SLOT(close()));
 215                 } else {
 216                         /* Additional view, create a standard bar */
 217                         pv::views::trace::StandardBar *standard_bar =
 218                                 new pv::views::trace::StandardBar(session, this, tv);
 219                         dock_main->addToolBar(standard_bar);
 220
 221                         standard_bar->action_view_show_cursors()->setChecked(tv->cursors_shown());
 222                 }
 223         }
 224
 225         return v;
 226 }
 227
 228 void MainWindow::remove_view(shared_ptr<views::ViewBase> view)
 229 {
 230         for (shared_ptr<Session> session : sessions_) {
 231                 if (!session->has_view(view))
 232                         continue;
 233
 234                 // Find the dock the view is contained in and remove it
 235                 for (auto& entry : view_docks_)
 236                         if (entry.second == view) {
 237                                 // Remove the view from the session
 238                                 session->deregister_view(view);
 239
 240                                 // Remove the view from its parent; otherwise, Qt will
 241                                 // call deleteLater() on it, which causes a double free
 242                                 // since the shared_ptr in view_docks_ doesn't know
 243                                 // that Qt keeps a pointer to the view around
 244                                 view->setParent(nullptr);
 245
 246                                 // Delete the view's dock widget and all widgets inside it
 247                                 entry.first->deleteLater();
 248
 249                                 // Remove the dock widget from the list and stop iterating
 250                                 view_docks_.erase(entry.first);
 251                                 break;
 252                         }
 253         }
 254 }
 255
 256 shared_ptr<subwindows::SubWindowBase> MainWindow::add_subwindow(
 257         subwindows::SubWindowType type, Session &session)
 258 {
 259         GlobalSettings settings;
 260         shared_ptr<subwindows::SubWindowBase> v;
 261
 262         QMainWindow *main_window = nullptr;
 263         for (auto& entry : session_windows_)
 264                 if (entry.first.get() == &session)
 265                         main_window = entry.second;
 266
 267         assert(main_window);
 268
 269         QString title = "";
 270
 271         switch (type) {
 272 #ifdef ENABLE_DECODE
 273                 case subwindows::SubWindowTypeDecoderSelector:
 274                         title = tr("Decoder Selector");
 275                         break;
 276 #endif
 277                 default:
 278                         break;
 279         }
 280
 281         QDockWidget* dock = new QDockWidget(title, main_window);
 282         dock->setObjectName(title);
 283         main_window->addDockWidget(Qt::TopDockWidgetArea, dock);
 284
 285         // Insert a QMainWindow into the dock widget to allow for a tool bar
 286         QMainWindow *dock_main = new QMainWindow(dock);
 287         dock_main->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
 288
 289 #ifdef ENABLE_DECODE
 290         if (type == subwindows::SubWindowTypeDecoderSelector)
 291                 v = make_shared<subwindows::decoder_selector::SubWindow>(session, dock_main);
 292 #endif
 293
 294         if (!v)
 295                 return nullptr;
 296
 297         sub_windows_[dock] = v;
 298         dock_main->setCentralWidget(v.get());
 299         dock->setWidget(dock_main);
 300
 301         dock->setContextMenuPolicy(Qt::PreventContextMenu);
 302         dock->setFeatures(QDockWidget::DockWidgetMovable |
 303                 QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetClosable);
 304
 305         QAbstractButton *close_btn =
 306                 dock->findChildren<QAbstractButton*>  // clazy:exclude=detaching-temporary
 307                         ("qt_dockwidget_closebutton").front();
 308
 309         // Allow all subwindows to be closed via ESC.
 310         close_btn->setShortcut(QKeySequence(Qt::Key_Escape));
 311
 312         connect(close_btn, SIGNAL(clicked(bool)),
 313                 this, SLOT(on_sub_window_close_clicked()));
 314
 315         if (v->has_toolbar())
 316                 dock_main->addToolBar(v->create_toolbar(dock_main));
 317
 318         if (v->minimum_width() > 0)
 319                 dock->setMinimumSize(v->minimum_width(), 0);
 320
 321         return v;
 322 }
 323
 324 shared_ptr<Session> MainWindow::add_session()
 325 {
 326         static int last_session_id = 1;
 327         QString name = tr("Session %1").arg(last_session_id++);
 328
 329         shared_ptr<Session> session = make_shared<Session>(device_manager_, name);
 330
 331         connect(session.get(), SIGNAL(add_view(views::ViewType, Session*)),
 332                 this, SLOT(on_add_view(views::ViewType, Session*)));
 333         connect(session.get(), SIGNAL(name_changed()),
 334                 this, SLOT(on_session_name_changed()));
 335         session_state_mapper_.setMapping(session.get(), session.get());
 336         connect(session.get(), SIGNAL(capture_state_changed(int)),
 337                 &session_state_mapper_, SLOT(map()));
 338
 339         sessions_.push_back(session);
 340
 341         QMainWindow *window = new QMainWindow();
 342         window->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
 343         session_windows_[session] = window;
 344
 345         int index = session_selector_.addTab(window, name);
 346         session_selector_.setCurrentIndex(index);
 347         last_focused_session_ = session;
 348
 349         window->setDockNestingEnabled(true);
 350
 351         shared_ptr<views::ViewBase> main_view = add_view(views::ViewTypeTrace, *session);
 352
 353         return session;
 354 }
 355
 356 void MainWindow::remove_session(shared_ptr<Session> session)
 357 {
 358         // Determine the height of the button before it collapses
 359         int h = new_session_button_->height();
 360
 361         // Stop capture while the session still exists so that the UI can be
 362         // updated in case we're currently running. If so, this will schedule a
 363         // call to our on_capture_state_changed() slot for the next run of the
 364         // event loop. We need to have this executed immediately or else it will
 365         // be dismissed since the session object will be deleted by the time we
 366         // leave this method and the event loop gets a chance to run again.
 367         session->stop_capture();
 368         QApplication::processEvents();
 369
 370         for (const shared_ptr<views::ViewBase>& view : session->views())
 371                 remove_view(view);
 372
 373         QMainWindow *window = session_windows_.at(session);
 374         session_selector_.removeTab(session_selector_.indexOf(window));
 375
 376         session_windows_.erase(session);
 377
 378         if (last_focused_session_ == session)
 379                 last_focused_session_.reset();
 380
 381         // Remove the session from our list of sessions (which also destroys it)
 382         sessions_.remove_if([&](shared_ptr<Session> s) {
 383                 return s == session; });
 384
 385         if (sessions_.empty()) {
 386                 // When there are no more tabs, the height of the QTabWidget
 387                 // drops to zero. We must prevent this to keep the static
 388                 // widgets visible
 389                 for (QWidget *w : static_tab_widget_->findChildren<QWidget*>())  // clazy:exclude=range-loop
 390                         w->setMinimumHeight(h);
 391
 392                 int margin = static_tab_widget_->layout()->contentsMargins().bottom();
 393                 static_tab_widget_->setMinimumHeight(h + 2 * margin);
 394                 session_selector_.setMinimumHeight(h + 2 * margin);
 395
 396                 // Update the window title if there is no view left to
 397                 // generate focus change events
 398                 setWindowTitle(WindowTitle);
 399         }
 400 }
 401
 402 void MainWindow::add_session_with_file(string open_file_name,
 403         string open_file_format, string open_setup_file_name)
 404 {
 405         shared_ptr<Session> session = add_session();
 406         session->load_init_file(open_file_name, open_file_format, open_setup_file_name);
 407 }
 408
 409 void MainWindow::add_default_session()
 410 {
 411         // Only add the default session if there would be no session otherwise
 412         if (sessions_.size() > 0)
 413                 return;
 414
 415         shared_ptr<Session> session = add_session();
 416
 417         // Check the list of available devices. Prefer the one that was
 418         // found with user supplied scan specs (if applicable). Then try
 419         // one of the auto detected devices that are not the demo device.
 420         // Pick demo in the absence of "genuine" hardware devices.
 421         shared_ptr<devices::HardwareDevice> user_device, other_device, demo_device;
 422         for (const shared_ptr<devices::HardwareDevice>& dev : device_manager_.devices()) {
 423                 if (dev == device_manager_.user_spec_device()) {
 424                         user_device = dev;
 425                 } else if (dev->hardware_device()->driver()->name() == "demo") {
 426                         demo_device = dev;
 427                 } else {
 428                         other_device = dev;
 429                 }
 430         }
 431         if (user_device)
 432                 session->select_device(user_device);
 433         else if (other_device)
 434                 session->select_device(other_device);
 435         else
 436                 session->select_device(demo_device);
 437 }
 438
 439 void MainWindow::save_sessions()
 440 {
 441         QSettings settings;
 442         int id = 0;
 443
 444         for (shared_ptr<Session>& session : sessions_) {
 445                 // Ignore sessions using the demo device or no device at all
 446                 if (session->device()) {
 447                         shared_ptr<devices::HardwareDevice> device =
 448                                 dynamic_pointer_cast< devices::HardwareDevice >
 449                                 (session->device());
 450
 451                         if (device &&
 452                                 device->hardware_device()->driver()->name() == "demo")
 453                                 continue;
 454
 455                         settings.beginGroup("Session" + QString::number(id++));
 456                         settings.remove("");  // Remove all keys in this group
 457                         session->save_settings(settings);
 458                         settings.endGroup();
 459                 }
 460         }
 461
 462         settings.setValue("sessions", id);
 463 }
 464
 465 void MainWindow::restore_sessions()
 466 {
 467         QSettings settings;
 468         int i, session_count;
 469
 470         session_count = settings.value("sessions", 0).toInt();
 471
 472         for (i = 0; i < session_count; i++) {
 473                 settings.beginGroup("Session" + QString::number(i));
 474                 shared_ptr<Session> session = add_session();
 475                 session->restore_settings(settings);
 476                 settings.endGroup();
 477         }
 478 }
 479
 480 void MainWindow::setup_ui()
 481 {
 482         setObjectName(QString::fromUtf8("MainWindow"));
 483
 484         setCentralWidget(&session_selector_);
 485
 486         // Set the window icon
 487         QIcon icon;
 488         icon.addFile(QString(":/icons/pulseview.png"));
 489         setWindowIcon(icon);
 490
 491         // Set up keyboard shortcuts that affect all views at once
 492         view_sticky_scrolling_shortcut_ = new QShortcut(QKeySequence(Qt::Key_S), this, SLOT(on_view_sticky_scrolling_shortcut()));
 493         view_sticky_scrolling_shortcut_->setAutoRepeat(false);
 494
 495         view_show_sampling_points_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Period), this, SLOT(on_view_show_sampling_points_shortcut()));
 496         view_show_sampling_points_shortcut_->setAutoRepeat(false);
 497
 498         view_show_analog_minor_grid_shortcut_ = new QShortcut(QKeySequence(Qt::Key_G), this, SLOT(on_view_show_analog_minor_grid_shortcut()));
 499         view_show_analog_minor_grid_shortcut_->setAutoRepeat(false);
 500
 501         view_colored_bg_shortcut_ = new QShortcut(QKeySequence(Qt::Key_B), this, SLOT(on_view_colored_bg_shortcut()));
 502         view_colored_bg_shortcut_->setAutoRepeat(false);
 503
 504         // Set up the tab area
 505         new_session_button_ = new QToolButton();
 506         new_session_button_->setIcon(QIcon::fromTheme("document-new",
 507                 QIcon(":/icons/document-new.png")));
 508         new_session_button_->setToolTip(tr("Create New Session"));
 509         new_session_button_->setAutoRaise(true);
 510
 511         run_stop_button_ = new QToolButton();
 512         run_stop_button_->setAutoRaise(true);
 513         run_stop_button_->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 514         run_stop_button_->setToolTip(tr("Start/Stop Acquisition"));
 515
 516         run_stop_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Space), run_stop_button_, SLOT(click()));
 517         run_stop_shortcut_->setAutoRepeat(false);
 518
 519         settings_button_ = new QToolButton();
 520         settings_button_->setIcon(QIcon::fromTheme("preferences-system",
 521                 QIcon(":/icons/preferences-system.png")));
 522         settings_button_->setToolTip(tr("Settings"));
 523         settings_button_->setAutoRaise(true);
 524
 525         QFrame *separator1 = new QFrame();
 526         separator1->setFrameStyle(QFrame::VLine | QFrame::Raised);
 527         QFrame *separator2 = new QFrame();
 528         separator2->setFrameStyle(QFrame::VLine | QFrame::Raised);
 529
 530         QHBoxLayout* layout = new QHBoxLayout();
 531         layout->setContentsMargins(2, 2, 2, 2);
 532         layout->addWidget(new_session_button_);
 533         layout->addWidget(separator1);
 534         layout->addWidget(run_stop_button_);
 535         layout->addWidget(separator2);
 536         layout->addWidget(settings_button_);
 537
 538         static_tab_widget_ = new QWidget();
 539         static_tab_widget_->setLayout(layout);
 540
 541         session_selector_.setCornerWidget(static_tab_widget_, Qt::TopLeftCorner);
 542         session_selector_.setTabsClosable(true);
 543
 544         close_application_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this, SLOT(close()));
 545         close_application_shortcut_->setAutoRepeat(false);
 546
 547         close_current_tab_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this, SLOT(on_close_current_tab()));
 548
 549         connect(new_session_button_, SIGNAL(clicked(bool)),
 550                 this, SLOT(on_new_session_clicked()));
 551         connect(run_stop_button_, SIGNAL(clicked(bool)),
 552                 this, SLOT(on_run_stop_clicked()));
 553         connect(&session_state_mapper_, SIGNAL(mapped(QObject*)),
 554                 this, SLOT(on_capture_state_changed(QObject*)));
 555         connect(settings_button_, SIGNAL(clicked(bool)),
 556                 this, SLOT(on_settings_clicked()));
 557
 558         connect(&session_selector_, SIGNAL(tabCloseRequested(int)),
 559                 this, SLOT(on_tab_close_requested(int)));
 560         connect(&session_selector_, SIGNAL(currentChanged(int)),
 561                 this, SLOT(on_tab_changed(int)));
 562
 563
 564         connect(static_cast<QApplication *>(QCoreApplication::instance()),
 565                 SIGNAL(focusChanged(QWidget*, QWidget*)),
 566                 this, SLOT(on_focus_changed()));
 567 }
 568
 569 void MainWindow::save_ui_settings()
 570 {
 571         QSettings settings;
 572
 573         settings.beginGroup("MainWindow");
 574         settings.setValue("state", saveState());
 575         settings.setValue("geometry", saveGeometry());
 576         settings.endGroup();
 577 }
 578
 579 void MainWindow::restore_ui_settings()
 580 {
 581         QSettings settings;
 582
 583         settings.beginGroup("MainWindow");
 584
 585         if (settings.contains("geometry")) {
 586                 restoreGeometry(settings.value("geometry").toByteArray());
 587                 restoreState(settings.value("state").toByteArray());
 588         } else
 589                 resize(1000, 720);
 590
 591         settings.endGroup();
 592 }
 593
 594 shared_ptr<Session> MainWindow::get_tab_session(int index) const
 595 {
 596         // Find the session that belongs to the tab's main window
 597         for (auto& entry : session_windows_)
 598                 if (entry.second == session_selector_.widget(index))
 599                         return entry.first;
 600
 601         return nullptr;
 602 }
 603
 604 void MainWindow::closeEvent(QCloseEvent *event)
 605 {
 606         bool data_saved = true;
 607
 608         for (auto& entry : session_windows_)
 609                 if (!entry.first->data_saved())
 610                         data_saved = false;
 611
 612         if (!data_saved && (QMessageBox::question(this, tr("Confirmation"),
 613                 tr("There is unsaved data. Close anyway?"),
 614                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::No)) {
 615                 event->ignore();
 616         } else {
 617                 save_ui_settings();
 618                 save_sessions();
 619                 event->accept();
 620         }
 621 }
 622
 623 QMenu* MainWindow::createPopupMenu()
 624 {
 625         return nullptr;
 626 }
 627
 628 bool MainWindow::restoreState(const QByteArray &state, int version)
 629 {
 630         (void)state;
 631         (void)version;
 632
 633         // Do nothing. We don't want Qt to handle this, or else it
 634         // will try to restore all the dock widgets and create havoc.
 635
 636         return false;
 637 }
 638
 639 void MainWindow::on_add_view(views::ViewType type, Session *session)
 640 {
 641         // We get a pointer and need a reference
 642         for (shared_ptr<Session>& s : sessions_)
 643                 if (s.get() == session)
 644                         add_view(type, *s);
 645 }
 646
 647 void MainWindow::on_focus_changed()
 648 {
 649         shared_ptr<views::ViewBase> view = get_active_view();
 650
 651         if (view) {
 652                 for (shared_ptr<Session> session : sessions_) {
 653                         if (session->has_view(view)) {
 654                                 if (session != last_focused_session_) {
 655                                         // Activate correct tab if necessary
 656                                         shared_ptr<Session> tab_session = get_tab_session(
 657                                                 session_selector_.currentIndex());
 658                                         if (tab_session != session)
 659                                                 session_selector_.setCurrentWidget(
 660                                                         session_windows_.at(session));
 661
 662                                         on_focused_session_changed(session);
 663                                 }
 664
 665                                 break;
 666                         }
 667                 }
 668         }
 669
 670         if (sessions_.empty())
 671                 setWindowTitle(WindowTitle);
 672 }
 673
 674 void MainWindow::on_focused_session_changed(shared_ptr<Session> session)
 675 {
 676         last_focused_session_ = session;
 677
 678         setWindowTitle(session->name() + " - " + WindowTitle);
 679
 680         // Update the state of the run/stop button, too
 681         on_capture_state_changed(session.get());
 682 }
 683
 684 void MainWindow::on_new_session_clicked()
 685 {
 686         add_session();
 687 }
 688
 689 void MainWindow::on_run_stop_clicked()
 690 {
 691         shared_ptr<Session> session = last_focused_session_;
 692
 693         if (!session)
 694                 return;
 695
 696         switch (session->get_capture_state()) {
 697         case Session::Stopped:
 698                 session->start_capture([&](QString message) {
 699                         show_session_error("Capture failed", message); });
 700                 break;
 701         case Session::AwaitingTrigger:
 702         case Session::Running:
 703                 session->stop_capture();
 704                 break;
 705         }
 706 }
 707
 708 void MainWindow::on_settings_clicked()
 709 {
 710         dialogs::Settings dlg(device_manager_);
 711         dlg.exec();
 712 }
 713
 714 void MainWindow::on_session_name_changed()
 715 {
 716         // Update the corresponding dock widget's name(s)
 717         Session *session = qobject_cast<Session*>(QObject::sender());
 718         assert(session);
 719
 720         for (const shared_ptr<views::ViewBase>& view : session->views()) {
 721                 // Get the dock that contains the view
 722                 for (auto& entry : view_docks_)
 723                         if (entry.second == view) {
 724                                 entry.first->setObjectName(session->name());
 725                                 entry.first->setWindowTitle(session->name());
 726                         }
 727         }
 728
 729         // Update the tab widget by finding the main window and the tab from that
 730         for (auto& entry : session_windows_)
 731                 if (entry.first.get() == session) {
 732                         QMainWindow *window = entry.second;
 733                         const int index = session_selector_.indexOf(window);
 734                         session_selector_.setTabText(index, session->name());
 735                 }
 736
 737         // Refresh window title if the affected session has focus
 738         if (session == last_focused_session_.get())
 739                 setWindowTitle(session->name() + " - " + WindowTitle);
 740 }
 741
 742 void MainWindow::on_capture_state_changed(QObject *obj)
 743 {
 744         Session *caller = qobject_cast<Session*>(obj);
 745
 746         // Ignore if caller is not the currently focused session
 747         // unless there is only one session
 748         if ((sessions_.size() > 1) && (caller != last_focused_session_.get()))
 749                 return;
 750
 751         int state = caller->get_capture_state();
 752
 753         const QIcon *icons[] = {&icon_grey_, &icon_red_, &icon_green_};
 754         run_stop_button_->setIcon(*icons[state]);
 755         run_stop_button_->setText((state == pv::Session::Stopped) ?
 756                 tr("Run") : tr("Stop"));
 757 }
 758
 759 void MainWindow::on_new_view(Session *session, int view_type)
 760 {
 761         // We get a pointer and need a reference
 762         for (shared_ptr<Session>& s : sessions_)
 763                 if (s.get() == session)
 764                         add_view((views::ViewType)view_type, *s);
 765 }
 766
 767 void MainWindow::on_view_close_clicked()
 768 {
 769         // Find the dock widget that contains the close button that was clicked
 770         QObject *w = QObject::sender();
 771         QDockWidget *dock = nullptr;
 772
 773         while (w) {
 774             dock = qobject_cast<QDockWidget*>(w);
 775             if (dock)
 776                 break;
 777             w = w->parent();
 778         }
 779
 780         // Get the view contained in the dock widget
 781         shared_ptr<views::ViewBase> view;
 782
 783         for (auto& entry : view_docks_)
 784                 if (entry.first == dock)
 785                         view = entry.second;
 786
 787         // Deregister the view
 788         for (shared_ptr<Session> session : sessions_) {
 789                 if (!session->has_view(view))
 790                         continue;
 791
 792                 // Also destroy the entire session if its main view is closing...
 793                 if (view == session->main_view()) {
 794                         // ...but only if data is saved or the user confirms closing
 795                         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
 796                                 tr("This session contains unsaved data. Close it anyway?"),
 797                                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
 798                                 remove_session(session);
 799                         break;
 800                 } else
 801                         // All other views can be closed at any time as no data will be lost
 802                         remove_view(view);
 803         }
 804 }
 805
 806 void MainWindow::on_tab_changed(int index)
 807 {
 808         shared_ptr<Session> session = get_tab_session(index);
 809
 810         if (session)
 811                 on_focused_session_changed(session);
 812 }
 813
 814 void MainWindow::on_tab_close_requested(int index)
 815 {
 816         shared_ptr<Session> session = get_tab_session(index);
 817
 818         if (!session)
 819                 return;
 820
 821         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
 822                 tr("This session contains unsaved data. Close it anyway?"),
 823                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
 824                 remove_session(session);
 825 }
 826
 827 void MainWindow::on_show_decoder_selector(Session *session)
 828 {
 829 #ifdef ENABLE_DECODE
 830         // Close dock widget if it's already showing and return
 831         for (auto& entry : sub_windows_) {
 832                 QDockWidget* dock = entry.first;
 833                 shared_ptr<subwindows::SubWindowBase> decoder_selector =
 834                         dynamic_pointer_cast<subwindows::decoder_selector::SubWindow>(entry.second);
 835
 836                 if (decoder_selector && (&decoder_selector->session() == session)) {
 837                         sub_windows_.erase(dock);
 838                         dock->close();
 839                         return;
 840                 }
 841         }
 842
 843         // We get a pointer and need a reference
 844         for (shared_ptr<Session>& s : sessions_)
 845                 if (s.get() == session)
 846                         add_subwindow(subwindows::SubWindowTypeDecoderSelector, *s);
 847 #endif
 848 }
 849
 850 void MainWindow::on_sub_window_close_clicked()
 851 {
 852         // Find the dock widget that contains the close button that was clicked
 853         QObject *w = QObject::sender();
 854         QDockWidget *dock = nullptr;
 855
 856         while (w) {
 857             dock = qobject_cast<QDockWidget*>(w);
 858             if (dock)
 859                 break;
 860             w = w->parent();
 861         }
 862
 863         sub_windows_.erase(dock);
 864         dock->close();
 865 }
 866
 867 void MainWindow::on_view_colored_bg_shortcut()
 868 {
 869         GlobalSettings settings;
 870
 871         bool state = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
 872         settings.setValue(GlobalSettings::Key_View_ColoredBG, !state);
 873 }
 874
 875 void MainWindow::on_view_sticky_scrolling_shortcut()
 876 {
 877         GlobalSettings settings;
 878
 879         bool state = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
 880         settings.setValue(GlobalSettings::Key_View_StickyScrolling, !state);
 881 }
 882
 883 void MainWindow::on_view_show_sampling_points_shortcut()
 884 {
 885         GlobalSettings settings;
 886
 887         bool state = settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();
 888         settings.setValue(GlobalSettings::Key_View_ShowSamplingPoints, !state);
 889 }
 890
 891 void MainWindow::on_view_show_analog_minor_grid_shortcut()
 892 {
 893         GlobalSettings settings;
 894
 895         bool state = settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool();
 896         settings.setValue(GlobalSettings::Key_View_ShowAnalogMinorGrid, !state);
 897 }
 898
 899 void MainWindow::on_close_current_tab()
 900 {
 901         int tab = session_selector_.currentIndex();
 902
 903         on_tab_close_requested(tab);
 904 }
 905
 906 } // namespace pv