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 #endif
  55
  56 #include <libsigrokcxx/libsigrokcxx.hpp>
  57
  58 using std::dynamic_pointer_cast;
  59 using std::make_shared;
  60 using std::shared_ptr;
  61 using std::string;
  62
  63 namespace pv {
  64
  65 namespace view {
  66 class ViewItem;
  67 }
  68
  69 using toolbars::MainBar;
  70
  71 const QString MainWindow::WindowTitle = tr("PulseView");
  72
  73 MainWindow::MainWindow(DeviceManager &device_manager, QWidget *parent) :
  74         QMainWindow(parent),
  75         device_manager_(device_manager),
  76         session_selector_(this),
  77         session_state_mapper_(this),
  78         icon_red_(":/icons/status-red.svg"),
  79         icon_green_(":/icons/status-green.svg"),
  80         icon_grey_(":/icons/status-grey.svg")
  81 {
  82         GlobalSettings::add_change_handler(this);
  83
  84         setup_ui();
  85         restore_ui_settings();
  86 }
  87
  88 MainWindow::~MainWindow()
  89 {
  90         GlobalSettings::remove_change_handler(this);
  91
  92         // Make sure we no longer hold any shared pointers to widgets after the
  93         // destructor finishes (goes for sessions and sub windows alike)
  94
  95         while (!sessions_.empty())
  96                 remove_session(sessions_.front());
  97
  98         sub_windows_.clear();
  99 }
 100
 101 void MainWindow::show_session_error(const QString text, const QString info_text)
 102 {
 103         // TODO Emulate noquote()
 104         qDebug() << "Notifying user of session error:" << info_text;
 105
 106         QMessageBox msg;
 107         msg.setText(text + "\n\n" + info_text);
 108         msg.setStandardButtons(QMessageBox::Ok);
 109         msg.setIcon(QMessageBox::Warning);
 110         msg.exec();
 111 }
 112
 113 shared_ptr<views::ViewBase> MainWindow::get_active_view() const
 114 {
 115         // If there's only one view, use it...
 116         if (view_docks_.size() == 1)
 117                 return view_docks_.begin()->second;
 118
 119         // ...otherwise find the dock widget the widget with focus is contained in
 120         QObject *w = QApplication::focusWidget();
 121         QDockWidget *dock = nullptr;
 122
 123         while (w) {
 124                 dock = qobject_cast<QDockWidget*>(w);
 125                 if (dock)
 126                         break;
 127                 w = w->parent();
 128         }
 129
 130         // Get the view contained in the dock widget
 131         for (auto& entry : view_docks_)
 132                 if (entry.first == dock)
 133                         return entry.second;
 134
 135         return nullptr;
 136 }
 137
 138 shared_ptr<views::ViewBase> MainWindow::add_view(const QString &title,
 139         views::ViewType type, Session &session)
 140 {
 141         GlobalSettings settings;
 142         shared_ptr<views::ViewBase> v;
 143
 144         QMainWindow *main_window = nullptr;
 145         for (auto& entry : session_windows_)
 146                 if (entry.first.get() == &session)
 147                         main_window = entry.second;
 148
 149         assert(main_window);
 150
 151         shared_ptr<MainBar> main_bar = session.main_bar();
 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,
 164                         (main_bar ? false : true), dock_main);
 165
 166         if (!v)
 167                 return nullptr;
 168
 169         view_docks_[dock] = v;
 170         session.register_view(v);
 171
 172         dock_main->setCentralWidget(v.get());
 173         dock->setWidget(dock_main);
 174
 175         dock->setContextMenuPolicy(Qt::PreventContextMenu);
 176         dock->setFeatures(QDockWidget::DockWidgetMovable |
 177                 QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetClosable);
 178
 179         QAbstractButton *close_btn =
 180                 dock->findChildren<QAbstractButton*>("qt_dockwidget_closebutton")  // clazy:exclude=detaching-temporary
 181                         .front();
 182
 183         connect(close_btn, SIGNAL(clicked(bool)),
 184                 this, SLOT(on_view_close_clicked()));
 185
 186         connect(&session, SIGNAL(trigger_event(int, util::Timestamp)),
 187                 qobject_cast<views::ViewBase*>(v.get()),
 188                 SLOT(trigger_event(int, util::Timestamp)));
 189
 190         if (type == views::ViewTypeTrace) {
 191                 views::trace::View *tv =
 192                         qobject_cast<views::trace::View*>(v.get());
 193
 194                 tv->enable_colored_bg(settings.value(GlobalSettings::Key_View_ColoredBG).toBool());
 195                 tv->enable_show_sampling_points(settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool());
 196                 tv->enable_show_analog_minor_grid(settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool());
 197
 198                 if (!main_bar) {
 199                         /* Initial view, create the main bar */
 200                         main_bar = make_shared<MainBar>(session, this, tv);
 201                         dock_main->addToolBar(main_bar.get());
 202                         session.set_main_bar(main_bar);
 203
 204                         connect(main_bar.get(), SIGNAL(new_view(Session*)),
 205                                 this, SLOT(on_new_view(Session*)));
 206                         connect(main_bar.get(), SIGNAL(show_decoder_selector(Session*)),
 207                                 this, SLOT(on_show_decoder_selector(Session*)));
 208
 209                         main_bar->action_view_show_cursors()->setChecked(tv->cursors_shown());
 210
 211                         /* For the main view we need to prevent the dock widget from
 212                          * closing itself when its close button is clicked. This is
 213                          * so we can confirm with the user first. Regular views don't
 214                          * need this */
 215                         close_btn->disconnect(SIGNAL(clicked()), dock, SLOT(close()));
 216                 } else {
 217                         /* Additional view, create a standard bar */
 218                         pv::views::trace::StandardBar *standard_bar =
 219                                 new pv::views::trace::StandardBar(session, this, tv);
 220                         dock_main->addToolBar(standard_bar);
 221
 222                         standard_bar->action_view_show_cursors()->setChecked(tv->cursors_shown());
 223                 }
 224         }
 225
 226         return v;
 227 }
 228
 229 void MainWindow::remove_view(shared_ptr<views::ViewBase> view)
 230 {
 231         for (shared_ptr<Session> session : sessions_) {
 232                 if (!session->has_view(view))
 233                         continue;
 234
 235                 // Find the dock the view is contained in and remove it
 236                 for (auto& entry : view_docks_)
 237                         if (entry.second == view) {
 238                                 // Remove the view from the session
 239                                 session->deregister_view(view);
 240
 241                                 // Remove the view from its parent; otherwise, Qt will
 242                                 // call deleteLater() on it, which causes a double free
 243                                 // since the shared_ptr in view_docks_ doesn't know
 244                                 // that Qt keeps a pointer to the view around
 245                                 view->setParent(nullptr);
 246
 247                                 // Delete the view's dock widget and all widgets inside it
 248                                 entry.first->deleteLater();
 249
 250                                 // Remove the dock widget from the list and stop iterating
 251                                 view_docks_.erase(entry.first);
 252                                 break;
 253                         }
 254         }
 255 }
 256
 257 shared_ptr<subwindows::SubWindowBase> MainWindow::add_subwindow(
 258         subwindows::SubWindowType type, Session &session)
 259 {
 260         GlobalSettings settings;
 261         shared_ptr<subwindows::SubWindowBase> v;
 262
 263         QMainWindow *main_window = nullptr;
 264         for (auto entry : session_windows_)
 265                 if (entry.first.get() == &session)
 266                         main_window = entry.second;
 267
 268         assert(main_window);
 269
 270         QString title = "";
 271
 272         switch (type) {
 273 #ifdef ENABLE_DECODE
 274                 case subwindows::SubWindowTypeDecoderSelector:
 275                         title = tr("Decoder Selector");
 276                         break;
 277 #endif
 278                 default:
 279                         break;
 280         }
 281
 282         QDockWidget* dock = new QDockWidget(title, main_window);
 283         dock->setObjectName(title);
 284         main_window->addDockWidget(Qt::TopDockWidgetArea, dock);
 285
 286         // Insert a QMainWindow into the dock widget to allow for a tool bar
 287         QMainWindow *dock_main = new QMainWindow(dock);
 288         dock_main->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
 289
 290 #ifdef ENABLE_DECODE
 291         if (type == subwindows::SubWindowTypeDecoderSelector)
 292                 v = make_shared<subwindows::decoder_selector::SubWindow>(session, dock_main);
 293 #endif
 294
 295         if (!v)
 296                 return nullptr;
 297
 298         sub_windows_[dock] = v;
 299         dock_main->setCentralWidget(v.get());
 300         dock->setWidget(dock_main);
 301
 302         dock->setContextMenuPolicy(Qt::PreventContextMenu);
 303         dock->setFeatures(QDockWidget::DockWidgetMovable |
 304                 QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetClosable);
 305
 306         QAbstractButton *close_btn =
 307                 dock->findChildren<QAbstractButton*>
 308                         ("qt_dockwidget_closebutton").front();
 309
 310         connect(close_btn, SIGNAL(clicked(bool)),
 311                 this, SLOT(on_sub_window_close_clicked()));
 312
 313         if (v->has_toolbar())
 314                 dock_main->addToolBar(v->create_toolbar(dock_main));
 315
 316         if (v->minimum_width() > 0)
 317                 dock->setMinimumSize(v->minimum_width(), 0);
 318
 319         return v;
 320 }
 321
 322 shared_ptr<Session> MainWindow::add_session()
 323 {
 324         static int last_session_id = 1;
 325         QString name = tr("Session %1").arg(last_session_id++);
 326
 327         shared_ptr<Session> session = make_shared<Session>(device_manager_, name);
 328
 329         connect(session.get(), SIGNAL(add_view(const QString&, views::ViewType, Session*)),
 330                 this, SLOT(on_add_view(const QString&, views::ViewType, Session*)));
 331         connect(session.get(), SIGNAL(name_changed()),
 332                 this, SLOT(on_session_name_changed()));
 333         session_state_mapper_.setMapping(session.get(), session.get());
 334         connect(session.get(), SIGNAL(capture_state_changed(int)),
 335                 &session_state_mapper_, SLOT(map()));
 336
 337         sessions_.push_back(session);
 338
 339         QMainWindow *window = new QMainWindow();
 340         window->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
 341         session_windows_[session] = window;
 342
 343         int index = session_selector_.addTab(window, name);
 344         session_selector_.setCurrentIndex(index);
 345         last_focused_session_ = session;
 346
 347         window->setDockNestingEnabled(true);
 348
 349         shared_ptr<views::ViewBase> main_view =
 350                 add_view(name, views::ViewTypeTrace, *session);
 351
 352         return session;
 353 }
 354
 355 void MainWindow::remove_session(shared_ptr<Session> session)
 356 {
 357         // Determine the height of the button before it collapses
 358         int h = new_session_button_->height();
 359
 360         // Stop capture while the session still exists so that the UI can be
 361         // updated in case we're currently running. If so, this will schedule a
 362         // call to our on_capture_state_changed() slot for the next run of the
 363         // event loop. We need to have this executed immediately or else it will
 364         // be dismissed since the session object will be deleted by the time we
 365         // leave this method and the event loop gets a chance to run again.
 366         session->stop_capture();
 367         QApplication::processEvents();
 368
 369         for (const shared_ptr<views::ViewBase>& view : session->views())
 370                 remove_view(view);
 371
 372         QMainWindow *window = session_windows_.at(session);
 373         session_selector_.removeTab(session_selector_.indexOf(window));
 374
 375         session_windows_.erase(session);
 376
 377         if (last_focused_session_ == session)
 378                 last_focused_session_.reset();
 379
 380         // Remove the session from our list of sessions (which also destroys it)
 381         sessions_.remove_if([&](shared_ptr<Session> s) {
 382                 return s == session; });
 383
 384         if (sessions_.empty()) {
 385                 // When there are no more tabs, the height of the QTabWidget
 386                 // drops to zero. We must prevent this to keep the static
 387                 // widgets visible
 388                 for (QWidget *w : static_tab_widget_->findChildren<QWidget*>())  // clazy:exclude=range-loop
 389                         w->setMinimumHeight(h);
 390
 391                 int margin = static_tab_widget_->layout()->contentsMargins().bottom();
 392                 static_tab_widget_->setMinimumHeight(h + 2 * margin);
 393                 session_selector_.setMinimumHeight(h + 2 * margin);
 394
 395                 // Update the window title if there is no view left to
 396                 // generate focus change events
 397                 setWindowTitle(WindowTitle);
 398         }
 399 }
 400
 401 void MainWindow::add_session_with_file(string open_file_name,
 402         string open_file_format, string open_setup_file_name)
 403 {
 404         shared_ptr<Session> session = add_session();
 405         session->load_init_file(open_file_name, open_file_format, open_setup_file_name);
 406 }
 407
 408 void MainWindow::add_default_session()
 409 {
 410         // Only add the default session if there would be no session otherwise
 411         if (sessions_.size() > 0)
 412                 return;
 413
 414         shared_ptr<Session> session = add_session();
 415
 416         // Check the list of available devices. Prefer the one that was
 417         // found with user supplied scan specs (if applicable). Then try
 418         // one of the auto detected devices that are not the demo device.
 419         // Pick demo in the absence of "genuine" hardware devices.
 420         shared_ptr<devices::HardwareDevice> user_device, other_device, demo_device;
 421         for (const shared_ptr<devices::HardwareDevice>& dev : device_manager_.devices()) {
 422                 if (dev == device_manager_.user_spec_device()) {
 423                         user_device = dev;
 424                 } else if (dev->hardware_device()->driver()->name() == "demo") {
 425                         demo_device = dev;
 426                 } else {
 427                         other_device = dev;
 428                 }
 429         }
 430         if (user_device)
 431                 session->select_device(user_device);
 432         else if (other_device)
 433                 session->select_device(other_device);
 434         else
 435                 session->select_device(demo_device);
 436 }
 437
 438 void MainWindow::save_sessions()
 439 {
 440         QSettings settings;
 441         int id = 0;
 442
 443         for (shared_ptr<Session>& session : sessions_) {
 444                 // Ignore sessions using the demo device or no device at all
 445                 if (session->device()) {
 446                         shared_ptr<devices::HardwareDevice> device =
 447                                 dynamic_pointer_cast< devices::HardwareDevice >
 448                                 (session->device());
 449
 450                         if (device &&
 451                                 device->hardware_device()->driver()->name() == "demo")
 452                                 continue;
 453
 454                         settings.beginGroup("Session" + QString::number(id++));
 455                         settings.remove("");  // Remove all keys in this group
 456                         session->save_settings(settings);
 457                         settings.endGroup();
 458                 }
 459         }
 460
 461         settings.setValue("sessions", id);
 462 }
 463
 464 void MainWindow::restore_sessions()
 465 {
 466         QSettings settings;
 467         int i, session_count;
 468
 469         session_count = settings.value("sessions", 0).toInt();
 470
 471         for (i = 0; i < session_count; i++) {
 472                 settings.beginGroup("Session" + QString::number(i));
 473                 shared_ptr<Session> session = add_session();
 474                 session->restore_settings(settings);
 475                 settings.endGroup();
 476         }
 477 }
 478
 479 void MainWindow::on_setting_changed(const QString &key, const QVariant &value)
 480 {
 481         if (key == GlobalSettings::Key_View_ColoredBG)
 482                 on_settingViewColoredBg_changed(value);
 483
 484         if (key == GlobalSettings::Key_View_ShowSamplingPoints)
 485                 on_settingViewShowSamplingPoints_changed(value);
 486
 487         if (key == GlobalSettings::Key_View_ShowAnalogMinorGrid)
 488                 on_settingViewShowAnalogMinorGrid_changed(value);
 489 }
 490
 491 void MainWindow::setup_ui()
 492 {
 493         setObjectName(QString::fromUtf8("MainWindow"));
 494
 495         setCentralWidget(&session_selector_);
 496
 497         // Set the window icon
 498         QIcon icon;
 499         icon.addFile(QString(":/icons/pulseview.png"));
 500         setWindowIcon(icon);
 501
 502         view_sticky_scrolling_shortcut_ = new QShortcut(QKeySequence(Qt::Key_S), this, SLOT(on_view_sticky_scrolling_shortcut()));
 503         view_sticky_scrolling_shortcut_->setAutoRepeat(false);
 504
 505         view_show_sampling_points_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Period), this, SLOT(on_view_show_sampling_points_shortcut()));
 506         view_show_sampling_points_shortcut_->setAutoRepeat(false);
 507
 508         view_show_analog_minor_grid_shortcut_ = new QShortcut(QKeySequence(Qt::Key_G), this, SLOT(on_view_show_analog_minor_grid_shortcut()));
 509         view_show_analog_minor_grid_shortcut_->setAutoRepeat(false);
 510
 511         view_colored_bg_shortcut_ = new QShortcut(QKeySequence(Qt::Key_B), this, SLOT(on_view_colored_bg_shortcut()));
 512         view_colored_bg_shortcut_->setAutoRepeat(false);
 513
 514         // Set up the tab area
 515         new_session_button_ = new QToolButton();
 516         new_session_button_->setIcon(QIcon::fromTheme("document-new",
 517                 QIcon(":/icons/document-new.png")));
 518         new_session_button_->setToolTip(tr("Create New Session"));
 519         new_session_button_->setAutoRaise(true);
 520
 521         run_stop_button_ = new QToolButton();
 522         run_stop_button_->setAutoRaise(true);
 523         run_stop_button_->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 524         run_stop_button_->setToolTip(tr("Start/Stop Acquisition"));
 525
 526         run_stop_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Space), run_stop_button_, SLOT(click()));
 527         run_stop_shortcut_->setAutoRepeat(false);
 528
 529         settings_button_ = new QToolButton();
 530         settings_button_->setIcon(QIcon::fromTheme("preferences-system",
 531                 QIcon(":/icons/preferences-system.png")));
 532         settings_button_->setToolTip(tr("Settings"));
 533         settings_button_->setAutoRaise(true);
 534
 535         QFrame *separator1 = new QFrame();
 536         separator1->setFrameStyle(QFrame::VLine | QFrame::Raised);
 537         QFrame *separator2 = new QFrame();
 538         separator2->setFrameStyle(QFrame::VLine | QFrame::Raised);
 539
 540         QHBoxLayout* layout = new QHBoxLayout();
 541         layout->setContentsMargins(2, 2, 2, 2);
 542         layout->addWidget(new_session_button_);
 543         layout->addWidget(separator1);
 544         layout->addWidget(run_stop_button_);
 545         layout->addWidget(separator2);
 546         layout->addWidget(settings_button_);
 547
 548         static_tab_widget_ = new QWidget();
 549         static_tab_widget_->setLayout(layout);
 550
 551         session_selector_.setCornerWidget(static_tab_widget_, Qt::TopLeftCorner);
 552         session_selector_.setTabsClosable(true);
 553
 554         close_application_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this, SLOT(close()));
 555         close_application_shortcut_->setAutoRepeat(false);
 556
 557         close_current_tab_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this, SLOT(on_close_current_tab()));
 558
 559         connect(new_session_button_, SIGNAL(clicked(bool)),
 560                 this, SLOT(on_new_session_clicked()));
 561         connect(run_stop_button_, SIGNAL(clicked(bool)),
 562                 this, SLOT(on_run_stop_clicked()));
 563         connect(&session_state_mapper_, SIGNAL(mapped(QObject*)),
 564                 this, SLOT(on_capture_state_changed(QObject*)));
 565         connect(settings_button_, SIGNAL(clicked(bool)),
 566                 this, SLOT(on_settings_clicked()));
 567
 568         connect(&session_selector_, SIGNAL(tabCloseRequested(int)),
 569                 this, SLOT(on_tab_close_requested(int)));
 570         connect(&session_selector_, SIGNAL(currentChanged(int)),
 571                 this, SLOT(on_tab_changed(int)));
 572
 573
 574         connect(static_cast<QApplication *>(QCoreApplication::instance()),
 575                 SIGNAL(focusChanged(QWidget*, QWidget*)),
 576                 this, SLOT(on_focus_changed()));
 577 }
 578
 579 void MainWindow::save_ui_settings()
 580 {
 581         QSettings settings;
 582
 583         settings.beginGroup("MainWindow");
 584         settings.setValue("state", saveState());
 585         settings.setValue("geometry", saveGeometry());
 586         settings.endGroup();
 587 }
 588
 589 void MainWindow::restore_ui_settings()
 590 {
 591         QSettings settings;
 592
 593         settings.beginGroup("MainWindow");
 594
 595         if (settings.contains("geometry")) {
 596                 restoreGeometry(settings.value("geometry").toByteArray());
 597                 restoreState(settings.value("state").toByteArray());
 598         } else
 599                 resize(1000, 720);
 600
 601         settings.endGroup();
 602 }
 603
 604 shared_ptr<Session> MainWindow::get_tab_session(int index) const
 605 {
 606         // Find the session that belongs to the tab's main window
 607         for (auto& entry : session_windows_)
 608                 if (entry.second == session_selector_.widget(index))
 609                         return entry.first;
 610
 611         return nullptr;
 612 }
 613
 614 void MainWindow::closeEvent(QCloseEvent *event)
 615 {
 616         bool data_saved = true;
 617
 618         for (auto& entry : session_windows_)
 619                 if (!entry.first->data_saved())
 620                         data_saved = false;
 621
 622         if (!data_saved && (QMessageBox::question(this, tr("Confirmation"),
 623                 tr("There is unsaved data. Close anyway?"),
 624                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::No)) {
 625                 event->ignore();
 626         } else {
 627                 save_ui_settings();
 628                 save_sessions();
 629                 event->accept();
 630         }
 631 }
 632
 633 QMenu* MainWindow::createPopupMenu()
 634 {
 635         return nullptr;
 636 }
 637
 638 bool MainWindow::restoreState(const QByteArray &state, int version)
 639 {
 640         (void)state;
 641         (void)version;
 642
 643         // Do nothing. We don't want Qt to handle this, or else it
 644         // will try to restore all the dock widgets and create havoc.
 645
 646         return false;
 647 }
 648
 649 void MainWindow::on_add_view(const QString &title, views::ViewType type,
 650         Session *session)
 651 {
 652         // We get a pointer and need a reference
 653         for (shared_ptr<Session>& s : sessions_)
 654                 if (s.get() == session)
 655                         add_view(title, type, *s);
 656 }
 657
 658 void MainWindow::on_focus_changed()
 659 {
 660         shared_ptr<views::ViewBase> view = get_active_view();
 661
 662         if (view) {
 663                 for (shared_ptr<Session> session : sessions_) {
 664                         if (session->has_view(view)) {
 665                                 if (session != last_focused_session_) {
 666                                         // Activate correct tab if necessary
 667                                         shared_ptr<Session> tab_session = get_tab_session(
 668                                                 session_selector_.currentIndex());
 669                                         if (tab_session != session)
 670                                                 session_selector_.setCurrentWidget(
 671                                                         session_windows_.at(session));
 672
 673                                         on_focused_session_changed(session);
 674                                 }
 675
 676                                 break;
 677                         }
 678                 }
 679         }
 680
 681         if (sessions_.empty())
 682                 setWindowTitle(WindowTitle);
 683 }
 684
 685 void MainWindow::on_focused_session_changed(shared_ptr<Session> session)
 686 {
 687         last_focused_session_ = session;
 688
 689         setWindowTitle(session->name() + " - " + WindowTitle);
 690
 691         // Update the state of the run/stop button, too
 692         on_capture_state_changed(session.get());
 693 }
 694
 695 void MainWindow::on_new_session_clicked()
 696 {
 697         add_session();
 698 }
 699
 700 void MainWindow::on_run_stop_clicked()
 701 {
 702         shared_ptr<Session> session = last_focused_session_;
 703
 704         if (!session)
 705                 return;
 706
 707         switch (session->get_capture_state()) {
 708         case Session::Stopped:
 709                 session->start_capture([&](QString message) {
 710                         show_session_error("Capture failed", message); });
 711                 break;
 712         case Session::AwaitingTrigger:
 713         case Session::Running:
 714                 session->stop_capture();
 715                 break;
 716         }
 717 }
 718
 719 void MainWindow::on_settings_clicked()
 720 {
 721         dialogs::Settings dlg(device_manager_);
 722         dlg.exec();
 723 }
 724
 725 void MainWindow::on_session_name_changed()
 726 {
 727         // Update the corresponding dock widget's name(s)
 728         Session *session = qobject_cast<Session*>(QObject::sender());
 729         assert(session);
 730
 731         for (const shared_ptr<views::ViewBase>& view : session->views()) {
 732                 // Get the dock that contains the view
 733                 for (auto& entry : view_docks_)
 734                         if (entry.second == view) {
 735                                 entry.first->setObjectName(session->name());
 736                                 entry.first->setWindowTitle(session->name());
 737                         }
 738         }
 739
 740         // Update the tab widget by finding the main window and the tab from that
 741         for (auto& entry : session_windows_)
 742                 if (entry.first.get() == session) {
 743                         QMainWindow *window = entry.second;
 744                         const int index = session_selector_.indexOf(window);
 745                         session_selector_.setTabText(index, session->name());
 746                 }
 747
 748         // Refresh window title if the affected session has focus
 749         if (session == last_focused_session_.get())
 750                 setWindowTitle(session->name() + " - " + WindowTitle);
 751 }
 752
 753 void MainWindow::on_capture_state_changed(QObject *obj)
 754 {
 755         Session *caller = qobject_cast<Session*>(obj);
 756
 757         // Ignore if caller is not the currently focused session
 758         // unless there is only one session
 759         if ((sessions_.size() > 1) && (caller != last_focused_session_.get()))
 760                 return;
 761
 762         int state = caller->get_capture_state();
 763
 764         const QIcon *icons[] = {&icon_grey_, &icon_red_, &icon_green_};
 765         run_stop_button_->setIcon(*icons[state]);
 766         run_stop_button_->setText((state == pv::Session::Stopped) ?
 767                 tr("Run") : tr("Stop"));
 768 }
 769
 770 void MainWindow::on_new_view(Session *session)
 771 {
 772         // We get a pointer and need a reference
 773         for (shared_ptr<Session>& s : sessions_)
 774                 if (s.get() == session)
 775                         add_view(session->name(), views::ViewTypeTrace, *s);
 776 }
 777
 778 void MainWindow::on_view_close_clicked()
 779 {
 780         // Find the dock widget that contains the close button that was clicked
 781         QObject *w = QObject::sender();
 782         QDockWidget *dock = nullptr;
 783
 784         while (w) {
 785             dock = qobject_cast<QDockWidget*>(w);
 786             if (dock)
 787                 break;
 788             w = w->parent();
 789         }
 790
 791         // Get the view contained in the dock widget
 792         shared_ptr<views::ViewBase> view;
 793
 794         for (auto& entry : view_docks_)
 795                 if (entry.first == dock)
 796                         view = entry.second;
 797
 798         // Deregister the view
 799         for (shared_ptr<Session> session : sessions_) {
 800                 if (!session->has_view(view))
 801                         continue;
 802
 803                 // Also destroy the entire session if its main view is closing...
 804                 if (view == session->main_view()) {
 805                         // ...but only if data is saved or the user confirms closing
 806                         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
 807                                 tr("This session contains unsaved data. Close it anyway?"),
 808                                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
 809                                 remove_session(session);
 810                         break;
 811                 } else
 812                         // All other views can be closed at any time as no data will be lost
 813                         remove_view(view);
 814         }
 815 }
 816
 817 void MainWindow::on_tab_changed(int index)
 818 {
 819         shared_ptr<Session> session = get_tab_session(index);
 820
 821         if (session)
 822                 on_focused_session_changed(session);
 823 }
 824
 825 void MainWindow::on_tab_close_requested(int index)
 826 {
 827         shared_ptr<Session> session = get_tab_session(index);
 828
 829         if (!session)
 830                 return;
 831
 832         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
 833                 tr("This session contains unsaved data. Close it anyway?"),
 834                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
 835                 remove_session(session);
 836 }
 837
 838 void MainWindow::on_show_decoder_selector(Session *session)
 839 {
 840 #ifdef ENABLE_DECODE
 841         // Close dock widget if it's already showing and return
 842         for (auto entry : sub_windows_) {
 843                 QDockWidget* dock = entry.first;
 844                 if (dynamic_pointer_cast<subwindows::decoder_selector::SubWindow>(entry.second)) {
 845                         sub_windows_.erase(dock);
 846                         dock->close();
 847                         return;
 848                 }
 849         }
 850
 851         // We get a pointer and need a reference
 852         for (shared_ptr<Session> s : sessions_)
 853                 if (s.get() == session)
 854                         add_subwindow(subwindows::SubWindowTypeDecoderSelector, *s);
 855 #endif
 856 }
 857
 858 void MainWindow::on_sub_window_close_clicked()
 859 {
 860         // Find the dock widget that contains the close button that was clicked
 861         QObject *w = QObject::sender();
 862         QDockWidget *dock = nullptr;
 863
 864         while (w) {
 865             dock = qobject_cast<QDockWidget*>(w);
 866             if (dock)
 867                 break;
 868             w = w->parent();
 869         }
 870
 871         sub_windows_.erase(dock);
 872         dock->close();
 873 }
 874
 875 void MainWindow::on_view_colored_bg_shortcut()
 876 {
 877         GlobalSettings settings;
 878
 879         bool state = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
 880         settings.setValue(GlobalSettings::Key_View_ColoredBG, !state);
 881 }
 882
 883 void MainWindow::on_view_sticky_scrolling_shortcut()
 884 {
 885         GlobalSettings settings;
 886
 887         bool state = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
 888         settings.setValue(GlobalSettings::Key_View_StickyScrolling, !state);
 889 }
 890
 891 void MainWindow::on_view_show_sampling_points_shortcut()
 892 {
 893         GlobalSettings settings;
 894
 895         bool state = settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();
 896         settings.setValue(GlobalSettings::Key_View_ShowSamplingPoints, !state);
 897 }
 898
 899 void MainWindow::on_view_show_analog_minor_grid_shortcut()
 900 {
 901         GlobalSettings settings;
 902
 903         bool state = settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool();
 904         settings.setValue(GlobalSettings::Key_View_ShowAnalogMinorGrid, !state);
 905 }
 906
 907 void MainWindow::on_settingViewColoredBg_changed(const QVariant new_value)
 908 {
 909         bool state = new_value.toBool();
 910
 911         for (auto& entry : view_docks_) {
 912                 shared_ptr<views::ViewBase> viewbase = entry.second;
 913
 914                 // Only trace views have this setting
 915                 views::trace::View* view =
 916                                 qobject_cast<views::trace::View*>(viewbase.get());
 917                 if (view)
 918                         view->enable_colored_bg(state);
 919         }
 920 }
 921
 922 void MainWindow::on_settingViewShowSamplingPoints_changed(const QVariant new_value)
 923 {
 924         bool state = new_value.toBool();
 925
 926         for (auto& entry : view_docks_) {
 927                 shared_ptr<views::ViewBase> viewbase = entry.second;
 928
 929                 // Only trace views have this setting
 930                 views::trace::View* view =
 931                                 qobject_cast<views::trace::View*>(viewbase.get());
 932                 if (view)
 933                         view->enable_show_sampling_points(state);
 934         }
 935 }
 936
 937 void MainWindow::on_settingViewShowAnalogMinorGrid_changed(const QVariant new_value)
 938 {
 939         bool state = new_value.toBool();
 940
 941         for (auto& entry : view_docks_) {
 942                 shared_ptr<views::ViewBase> viewbase = entry.second;
 943
 944                 // Only trace views have this setting
 945                 views::trace::View* view =
 946                                 qobject_cast<views::trace::View*>(viewbase.get());
 947                 if (view)
 948                         view->enable_show_analog_minor_grid(state);
 949         }
 950 }
 951
 952 void MainWindow::on_close_current_tab()
 953 {
 954         int tab = session_selector_.currentIndex();
 955
 956         on_tab_close_requested(tab);
 957 }
 958
 959 } // namespace pv