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         return v;
 317 }
 318
 319 shared_ptr<Session> MainWindow::add_session()
 320 {
 321         static int last_session_id = 1;
 322         QString name = tr("Session %1").arg(last_session_id++);
 323
 324         shared_ptr<Session> session = make_shared<Session>(device_manager_, name);
 325
 326         connect(session.get(), SIGNAL(add_view(const QString&, views::ViewType, Session*)),
 327                 this, SLOT(on_add_view(const QString&, views::ViewType, Session*)));
 328         connect(session.get(), SIGNAL(name_changed()),
 329                 this, SLOT(on_session_name_changed()));
 330         session_state_mapper_.setMapping(session.get(), session.get());
 331         connect(session.get(), SIGNAL(capture_state_changed(int)),
 332                 &session_state_mapper_, SLOT(map()));
 333
 334         sessions_.push_back(session);
 335
 336         QMainWindow *window = new QMainWindow();
 337         window->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
 338         session_windows_[session] = window;
 339
 340         int index = session_selector_.addTab(window, name);
 341         session_selector_.setCurrentIndex(index);
 342         last_focused_session_ = session;
 343
 344         window->setDockNestingEnabled(true);
 345
 346         shared_ptr<views::ViewBase> main_view =
 347                 add_view(name, views::ViewTypeTrace, *session);
 348
 349         return session;
 350 }
 351
 352 void MainWindow::remove_session(shared_ptr<Session> session)
 353 {
 354         // Determine the height of the button before it collapses
 355         int h = new_session_button_->height();
 356
 357         // Stop capture while the session still exists so that the UI can be
 358         // updated in case we're currently running. If so, this will schedule a
 359         // call to our on_capture_state_changed() slot for the next run of the
 360         // event loop. We need to have this executed immediately or else it will
 361         // be dismissed since the session object will be deleted by the time we
 362         // leave this method and the event loop gets a chance to run again.
 363         session->stop_capture();
 364         QApplication::processEvents();
 365
 366         for (const shared_ptr<views::ViewBase>& view : session->views())
 367                 remove_view(view);
 368
 369         QMainWindow *window = session_windows_.at(session);
 370         session_selector_.removeTab(session_selector_.indexOf(window));
 371
 372         session_windows_.erase(session);
 373
 374         if (last_focused_session_ == session)
 375                 last_focused_session_.reset();
 376
 377         // Remove the session from our list of sessions (which also destroys it)
 378         sessions_.remove_if([&](shared_ptr<Session> s) {
 379                 return s == session; });
 380
 381         if (sessions_.empty()) {
 382                 // When there are no more tabs, the height of the QTabWidget
 383                 // drops to zero. We must prevent this to keep the static
 384                 // widgets visible
 385                 for (QWidget *w : static_tab_widget_->findChildren<QWidget*>())  // clazy:exclude=range-loop
 386                         w->setMinimumHeight(h);
 387
 388                 int margin = static_tab_widget_->layout()->contentsMargins().bottom();
 389                 static_tab_widget_->setMinimumHeight(h + 2 * margin);
 390                 session_selector_.setMinimumHeight(h + 2 * margin);
 391
 392                 // Update the window title if there is no view left to
 393                 // generate focus change events
 394                 setWindowTitle(WindowTitle);
 395         }
 396 }
 397
 398 void MainWindow::add_session_with_file(string open_file_name,
 399         string open_file_format)
 400 {
 401         shared_ptr<Session> session = add_session();
 402         session->load_init_file(open_file_name, open_file_format);
 403 }
 404
 405 void MainWindow::add_default_session()
 406 {
 407         // Only add the default session if there would be no session otherwise
 408         if (sessions_.size() > 0)
 409                 return;
 410
 411         shared_ptr<Session> session = add_session();
 412
 413         // Check the list of available devices. Prefer the one that was
 414         // found with user supplied scan specs (if applicable). Then try
 415         // one of the auto detected devices that are not the demo device.
 416         // Pick demo in the absence of "genuine" hardware devices.
 417         shared_ptr<devices::HardwareDevice> user_device, other_device, demo_device;
 418         for (const shared_ptr<devices::HardwareDevice>& dev : device_manager_.devices()) {
 419                 if (dev == device_manager_.user_spec_device()) {
 420                         user_device = dev;
 421                 } else if (dev->hardware_device()->driver()->name() == "demo") {
 422                         demo_device = dev;
 423                 } else {
 424                         other_device = dev;
 425                 }
 426         }
 427         if (user_device)
 428                 session->select_device(user_device);
 429         else if (other_device)
 430                 session->select_device(other_device);
 431         else
 432                 session->select_device(demo_device);
 433 }
 434
 435 void MainWindow::save_sessions()
 436 {
 437         QSettings settings;
 438         int id = 0;
 439
 440         for (shared_ptr<Session>& session : sessions_) {
 441                 // Ignore sessions using the demo device or no device at all
 442                 if (session->device()) {
 443                         shared_ptr<devices::HardwareDevice> device =
 444                                 dynamic_pointer_cast< devices::HardwareDevice >
 445                                 (session->device());
 446
 447                         if (device &&
 448                                 device->hardware_device()->driver()->name() == "demo")
 449                                 continue;
 450
 451                         settings.beginGroup("Session" + QString::number(id++));
 452                         settings.remove("");  // Remove all keys in this group
 453                         session->save_settings(settings);
 454                         settings.endGroup();
 455                 }
 456         }
 457
 458         settings.setValue("sessions", id);
 459 }
 460
 461 void MainWindow::restore_sessions()
 462 {
 463         QSettings settings;
 464         int i, session_count;
 465
 466         session_count = settings.value("sessions", 0).toInt();
 467
 468         for (i = 0; i < session_count; i++) {
 469                 settings.beginGroup("Session" + QString::number(i));
 470                 shared_ptr<Session> session = add_session();
 471                 session->restore_settings(settings);
 472                 settings.endGroup();
 473         }
 474 }
 475
 476 void MainWindow::on_setting_changed(const QString &key, const QVariant &value)
 477 {
 478         if (key == GlobalSettings::Key_View_ColoredBG)
 479                 on_settingViewColoredBg_changed(value);
 480
 481         if (key == GlobalSettings::Key_View_ShowSamplingPoints)
 482                 on_settingViewShowSamplingPoints_changed(value);
 483
 484         if (key == GlobalSettings::Key_View_ShowAnalogMinorGrid)
 485                 on_settingViewShowAnalogMinorGrid_changed(value);
 486 }
 487
 488 void MainWindow::setup_ui()
 489 {
 490         setObjectName(QString::fromUtf8("MainWindow"));
 491
 492         setCentralWidget(&session_selector_);
 493
 494         // Set the window icon
 495         QIcon icon;
 496         icon.addFile(QString(":/icons/pulseview.png"));
 497         setWindowIcon(icon);
 498
 499         view_sticky_scrolling_shortcut_ = new QShortcut(QKeySequence(Qt::Key_S), this, SLOT(on_view_sticky_scrolling_shortcut()));
 500         view_sticky_scrolling_shortcut_->setAutoRepeat(false);
 501
 502         view_show_sampling_points_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Period), this, SLOT(on_view_show_sampling_points_shortcut()));
 503         view_show_sampling_points_shortcut_->setAutoRepeat(false);
 504
 505         view_show_analog_minor_grid_shortcut_ = new QShortcut(QKeySequence(Qt::Key_G), this, SLOT(on_view_show_analog_minor_grid_shortcut()));
 506         view_show_analog_minor_grid_shortcut_->setAutoRepeat(false);
 507
 508         view_colored_bg_shortcut_ = new QShortcut(QKeySequence(Qt::Key_B), this, SLOT(on_view_colored_bg_shortcut()));
 509         view_colored_bg_shortcut_->setAutoRepeat(false);
 510
 511         // Set up the tab area
 512         new_session_button_ = new QToolButton();
 513         new_session_button_->setIcon(QIcon::fromTheme("document-new",
 514                 QIcon(":/icons/document-new.png")));
 515         new_session_button_->setToolTip(tr("Create New Session"));
 516         new_session_button_->setAutoRaise(true);
 517
 518         run_stop_button_ = new QToolButton();
 519         run_stop_button_->setAutoRaise(true);
 520         run_stop_button_->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 521         run_stop_button_->setToolTip(tr("Start/Stop Acquisition"));
 522
 523         run_stop_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Space), run_stop_button_, SLOT(click()));
 524         run_stop_shortcut_->setAutoRepeat(false);
 525
 526         settings_button_ = new QToolButton();
 527         settings_button_->setIcon(QIcon::fromTheme("preferences-system",
 528                 QIcon(":/icons/preferences-system.png")));
 529         settings_button_->setToolTip(tr("Settings"));
 530         settings_button_->setAutoRaise(true);
 531
 532         QFrame *separator1 = new QFrame();
 533         separator1->setFrameStyle(QFrame::VLine | QFrame::Raised);
 534         QFrame *separator2 = new QFrame();
 535         separator2->setFrameStyle(QFrame::VLine | QFrame::Raised);
 536
 537         QHBoxLayout* layout = new QHBoxLayout();
 538         layout->setContentsMargins(2, 2, 2, 2);
 539         layout->addWidget(new_session_button_);
 540         layout->addWidget(separator1);
 541         layout->addWidget(run_stop_button_);
 542         layout->addWidget(separator2);
 543         layout->addWidget(settings_button_);
 544
 545         static_tab_widget_ = new QWidget();
 546         static_tab_widget_->setLayout(layout);
 547
 548         session_selector_.setCornerWidget(static_tab_widget_, Qt::TopLeftCorner);
 549         session_selector_.setTabsClosable(true);
 550
 551         close_application_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this, SLOT(close()));
 552         close_application_shortcut_->setAutoRepeat(false);
 553
 554         close_current_tab_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this, SLOT(on_close_current_tab()));
 555
 556         connect(new_session_button_, SIGNAL(clicked(bool)),
 557                 this, SLOT(on_new_session_clicked()));
 558         connect(run_stop_button_, SIGNAL(clicked(bool)),
 559                 this, SLOT(on_run_stop_clicked()));
 560         connect(&session_state_mapper_, SIGNAL(mapped(QObject*)),
 561                 this, SLOT(on_capture_state_changed(QObject*)));
 562         connect(settings_button_, SIGNAL(clicked(bool)),
 563                 this, SLOT(on_settings_clicked()));
 564
 565         connect(&session_selector_, SIGNAL(tabCloseRequested(int)),
 566                 this, SLOT(on_tab_close_requested(int)));
 567         connect(&session_selector_, SIGNAL(currentChanged(int)),
 568                 this, SLOT(on_tab_changed(int)));
 569
 570
 571         connect(static_cast<QApplication *>(QCoreApplication::instance()),
 572                 SIGNAL(focusChanged(QWidget*, QWidget*)),
 573                 this, SLOT(on_focus_changed()));
 574 }
 575
 576 void MainWindow::save_ui_settings()
 577 {
 578         QSettings settings;
 579
 580         settings.beginGroup("MainWindow");
 581         settings.setValue("state", saveState());
 582         settings.setValue("geometry", saveGeometry());
 583         settings.endGroup();
 584 }
 585
 586 void MainWindow::restore_ui_settings()
 587 {
 588         QSettings settings;
 589
 590         settings.beginGroup("MainWindow");
 591
 592         if (settings.contains("geometry")) {
 593                 restoreGeometry(settings.value("geometry").toByteArray());
 594                 restoreState(settings.value("state").toByteArray());
 595         } else
 596                 resize(1000, 720);
 597
 598         settings.endGroup();
 599 }
 600
 601 shared_ptr<Session> MainWindow::get_tab_session(int index) const
 602 {
 603         // Find the session that belongs to the tab's main window
 604         for (auto& entry : session_windows_)
 605                 if (entry.second == session_selector_.widget(index))
 606                         return entry.first;
 607
 608         return nullptr;
 609 }
 610
 611 void MainWindow::closeEvent(QCloseEvent *event)
 612 {
 613         bool data_saved = true;
 614
 615         for (auto& entry : session_windows_)
 616                 if (!entry.first->data_saved())
 617                         data_saved = false;
 618
 619         if (!data_saved && (QMessageBox::question(this, tr("Confirmation"),
 620                 tr("There is unsaved data. Close anyway?"),
 621                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::No)) {
 622                 event->ignore();
 623         } else {
 624                 save_ui_settings();
 625                 save_sessions();
 626                 event->accept();
 627         }
 628 }
 629
 630 QMenu* MainWindow::createPopupMenu()
 631 {
 632         return nullptr;
 633 }
 634
 635 bool MainWindow::restoreState(const QByteArray &state, int version)
 636 {
 637         (void)state;
 638         (void)version;
 639
 640         // Do nothing. We don't want Qt to handle this, or else it
 641         // will try to restore all the dock widgets and create havoc.
 642
 643         return false;
 644 }
 645
 646 void MainWindow::on_add_view(const QString &title, views::ViewType type,
 647         Session *session)
 648 {
 649         // We get a pointer and need a reference
 650         for (shared_ptr<Session>& s : sessions_)
 651                 if (s.get() == session)
 652                         add_view(title, type, *s);
 653 }
 654
 655 void MainWindow::on_focus_changed()
 656 {
 657         shared_ptr<views::ViewBase> view = get_active_view();
 658
 659         if (view) {
 660                 for (shared_ptr<Session> session : sessions_) {
 661                         if (session->has_view(view)) {
 662                                 if (session != last_focused_session_) {
 663                                         // Activate correct tab if necessary
 664                                         shared_ptr<Session> tab_session = get_tab_session(
 665                                                 session_selector_.currentIndex());
 666                                         if (tab_session != session)
 667                                                 session_selector_.setCurrentWidget(
 668                                                         session_windows_.at(session));
 669
 670                                         on_focused_session_changed(session);
 671                                 }
 672
 673                                 break;
 674                         }
 675                 }
 676         }
 677
 678         if (sessions_.empty())
 679                 setWindowTitle(WindowTitle);
 680 }
 681
 682 void MainWindow::on_focused_session_changed(shared_ptr<Session> session)
 683 {
 684         last_focused_session_ = session;
 685
 686         setWindowTitle(session->name() + " - " + WindowTitle);
 687
 688         // Update the state of the run/stop button, too
 689         on_capture_state_changed(session.get());
 690 }
 691
 692 void MainWindow::on_new_session_clicked()
 693 {
 694         add_session();
 695 }
 696
 697 void MainWindow::on_run_stop_clicked()
 698 {
 699         shared_ptr<Session> session = last_focused_session_;
 700
 701         if (!session)
 702                 return;
 703
 704         switch (session->get_capture_state()) {
 705         case Session::Stopped:
 706                 session->start_capture([&](QString message) {
 707                         show_session_error("Capture failed", message); });
 708                 break;
 709         case Session::AwaitingTrigger:
 710         case Session::Running:
 711                 session->stop_capture();
 712                 break;
 713         }
 714 }
 715
 716 void MainWindow::on_settings_clicked()
 717 {
 718         dialogs::Settings dlg(device_manager_);
 719         dlg.exec();
 720 }
 721
 722 void MainWindow::on_session_name_changed()
 723 {
 724         // Update the corresponding dock widget's name(s)
 725         Session *session = qobject_cast<Session*>(QObject::sender());
 726         assert(session);
 727
 728         for (const shared_ptr<views::ViewBase>& view : session->views()) {
 729                 // Get the dock that contains the view
 730                 for (auto& entry : view_docks_)
 731                         if (entry.second == view) {
 732                                 entry.first->setObjectName(session->name());
 733                                 entry.first->setWindowTitle(session->name());
 734                         }
 735         }
 736
 737         // Update the tab widget by finding the main window and the tab from that
 738         for (auto& entry : session_windows_)
 739                 if (entry.first.get() == session) {
 740                         QMainWindow *window = entry.second;
 741                         const int index = session_selector_.indexOf(window);
 742                         session_selector_.setTabText(index, session->name());
 743                 }
 744
 745         // Refresh window title if the affected session has focus
 746         if (session == last_focused_session_.get())
 747                 setWindowTitle(session->name() + " - " + WindowTitle);
 748 }
 749
 750 void MainWindow::on_capture_state_changed(QObject *obj)
 751 {
 752         Session *caller = qobject_cast<Session*>(obj);
 753
 754         // Ignore if caller is not the currently focused session
 755         // unless there is only one session
 756         if ((sessions_.size() > 1) && (caller != last_focused_session_.get()))
 757                 return;
 758
 759         int state = caller->get_capture_state();
 760
 761         const QIcon *icons[] = {&icon_grey_, &icon_red_, &icon_green_};
 762         run_stop_button_->setIcon(*icons[state]);
 763         run_stop_button_->setText((state == pv::Session::Stopped) ?
 764                 tr("Run") : tr("Stop"));
 765 }
 766
 767 void MainWindow::on_new_view(Session *session)
 768 {
 769         // We get a pointer and need a reference
 770         for (shared_ptr<Session>& s : sessions_)
 771                 if (s.get() == session)
 772                         add_view(session->name(), views::ViewTypeTrace, *s);
 773 }
 774
 775 void MainWindow::on_view_close_clicked()
 776 {
 777         // Find the dock widget that contains the close button that was clicked
 778         QObject *w = QObject::sender();
 779         QDockWidget *dock = nullptr;
 780
 781         while (w) {
 782             dock = qobject_cast<QDockWidget*>(w);
 783             if (dock)
 784                 break;
 785             w = w->parent();
 786         }
 787
 788         // Get the view contained in the dock widget
 789         shared_ptr<views::ViewBase> view;
 790
 791         for (auto& entry : view_docks_)
 792                 if (entry.first == dock)
 793                         view = entry.second;
 794
 795         // Deregister the view
 796         for (shared_ptr<Session> session : sessions_) {
 797                 if (!session->has_view(view))
 798                         continue;
 799
 800                 // Also destroy the entire session if its main view is closing...
 801                 if (view == session->main_view()) {
 802                         // ...but only if data is saved or the user confirms closing
 803                         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
 804                                 tr("This session contains unsaved data. Close it anyway?"),
 805                                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
 806                                 remove_session(session);
 807                         break;
 808                 } else
 809                         // All other views can be closed at any time as no data will be lost
 810                         remove_view(view);
 811         }
 812 }
 813
 814 void MainWindow::on_tab_changed(int index)
 815 {
 816         shared_ptr<Session> session = get_tab_session(index);
 817
 818         if (session)
 819                 on_focused_session_changed(session);
 820 }
 821
 822 void MainWindow::on_tab_close_requested(int index)
 823 {
 824         shared_ptr<Session> session = get_tab_session(index);
 825
 826         if (!session)
 827                 return;
 828
 829         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
 830                 tr("This session contains unsaved data. Close it anyway?"),
 831                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
 832                 remove_session(session);
 833 }
 834
 835 void MainWindow::on_show_decoder_selector(Session *session)
 836 {
 837 #ifdef ENABLE_DECODE
 838         // Close dock widget if it's already showing and return
 839         for (auto entry : sub_windows_) {
 840                 QDockWidget* dock = entry.first;
 841                 if (dynamic_pointer_cast<subwindows::decoder_selector::SubWindow>(entry.second)) {
 842                         sub_windows_.erase(dock);
 843                         dock->close();
 844                         return;
 845                 }
 846         }
 847
 848         // We get a pointer and need a reference
 849         for (shared_ptr<Session> s : sessions_)
 850                 if (s.get() == session)
 851                         add_subwindow(subwindows::SubWindowTypeDecoderSelector, *s);
 852 #endif
 853 }
 854
 855 void MainWindow::on_sub_window_close_clicked()
 856 {
 857         // Find the dock widget that contains the close button that was clicked
 858         QObject *w = QObject::sender();
 859         QDockWidget *dock = nullptr;
 860
 861         while (w) {
 862             dock = qobject_cast<QDockWidget*>(w);
 863             if (dock)
 864                 break;
 865             w = w->parent();
 866         }
 867
 868         sub_windows_.erase(dock);
 869         dock->close();
 870 }
 871
 872 void MainWindow::on_view_colored_bg_shortcut()
 873 {
 874         GlobalSettings settings;
 875
 876         bool state = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
 877         settings.setValue(GlobalSettings::Key_View_ColoredBG, !state);
 878 }
 879
 880 void MainWindow::on_view_sticky_scrolling_shortcut()
 881 {
 882         GlobalSettings settings;
 883
 884         bool state = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
 885         settings.setValue(GlobalSettings::Key_View_StickyScrolling, !state);
 886 }
 887
 888 void MainWindow::on_view_show_sampling_points_shortcut()
 889 {
 890         GlobalSettings settings;
 891
 892         bool state = settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();
 893         settings.setValue(GlobalSettings::Key_View_ShowSamplingPoints, !state);
 894 }
 895
 896 void MainWindow::on_view_show_analog_minor_grid_shortcut()
 897 {
 898         GlobalSettings settings;
 899
 900         bool state = settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool();
 901         settings.setValue(GlobalSettings::Key_View_ShowAnalogMinorGrid, !state);
 902 }
 903
 904 void MainWindow::on_settingViewColoredBg_changed(const QVariant new_value)
 905 {
 906         bool state = new_value.toBool();
 907
 908         for (auto& entry : view_docks_) {
 909                 shared_ptr<views::ViewBase> viewbase = entry.second;
 910
 911                 // Only trace views have this setting
 912                 views::trace::View* view =
 913                                 qobject_cast<views::trace::View*>(viewbase.get());
 914                 if (view)
 915                         view->enable_colored_bg(state);
 916         }
 917 }
 918
 919 void MainWindow::on_settingViewShowSamplingPoints_changed(const QVariant new_value)
 920 {
 921         bool state = new_value.toBool();
 922
 923         for (auto& entry : view_docks_) {
 924                 shared_ptr<views::ViewBase> viewbase = entry.second;
 925
 926                 // Only trace views have this setting
 927                 views::trace::View* view =
 928                                 qobject_cast<views::trace::View*>(viewbase.get());
 929                 if (view)
 930                         view->enable_show_sampling_points(state);
 931         }
 932 }
 933
 934 void MainWindow::on_settingViewShowAnalogMinorGrid_changed(const QVariant new_value)
 935 {
 936         bool state = new_value.toBool();
 937
 938         for (auto& entry : view_docks_) {
 939                 shared_ptr<views::ViewBase> viewbase = entry.second;
 940
 941                 // Only trace views have this setting
 942                 views::trace::View* view =
 943                                 qobject_cast<views::trace::View*>(viewbase.get());
 944                 if (view)
 945                         view->enable_show_analog_minor_grid(state);
 946         }
 947 }
 948
 949 void MainWindow::on_close_current_tab()
 950 {
 951         int tab = session_selector_.currentIndex();
 952
 953         on_tab_close_requested(tab);
 954 }
 955
 956 } // namespace pv