Use nullptr in a few places.
[pulseview.git] / 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 <cassert>
25 #include <algorithm>
26 #include <iterator>
27 #include <cstdint>
28 #include <cstdarg>
29
30 #include <QAction>
31 #include <QApplication>
32 #include <QCloseEvent>
33 #include <QDockWidget>
34 #include <QHBoxLayout>
35 #include <QMessageBox>
36 #include <QSettings>
37 #include <QWidget>
38 #include <QShortcut>
39
40 #include "mainwindow.hpp"
41
42 #include "devicemanager.hpp"
43 #include "globalsettings.hpp"
44 #include "util.hpp"
45 #include "devices/hardwaredevice.hpp"
46 #include "dialogs/settings.hpp"
47 #include "toolbars/mainbar.hpp"
48 #include "view/view.hpp"
49 #include "views/trace/standardbar.hpp"
50
51 #include <libsigrokcxx/libsigrokcxx.hpp>
52
53 using std::bind;
54 using std::dynamic_pointer_cast;
55 using std::make_shared;
56 using std::map;
57 using std::placeholders::_1;
58 using std::shared_ptr;
59 using std::string;
60
61 namespace pv {
62
63 namespace view {
64 class ViewItem;
65 }
66
67 using toolbars::MainBar;
68
69 const QString MainWindow::WindowTitle = tr("PulseView");
70
71 MainWindow::MainWindow(DeviceManager &device_manager,
72         string open_file_name, string open_file_format,
73         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         qRegisterMetaType<util::Timestamp>("util::Timestamp");
83         qRegisterMetaType<uint64_t>("uint64_t");
84
85         GlobalSettings::register_change_handler(GlobalSettings::Key_View_ColouredBG,
86                 bind(&MainWindow::on_settingViewColouredBg_changed, this, _1));
87
88         GlobalSettings::register_change_handler(GlobalSettings::Key_View_ShowSamplingPoints,
89                 bind(&MainWindow::on_settingViewShowSamplingPoints_changed, this, _1));
90
91         setup_ui();
92         restore_ui_settings();
93
94         if (!open_file_name.empty()) {
95                 shared_ptr<Session> session = add_session();
96                 session->load_init_file(open_file_name, open_file_format);
97         }
98
99         // Add empty default session if there aren't any sessions
100         if (sessions_.size() == 0) {
101                 shared_ptr<Session> session = add_session();
102
103                 map<string, string> dev_info;
104                 shared_ptr<devices::HardwareDevice> other_device, demo_device;
105
106                 // Use any available device that's not demo
107                 for (shared_ptr<devices::HardwareDevice> dev : device_manager_.devices()) {
108                         if (dev->hardware_device()->driver()->name() == "demo") {
109                                 demo_device = dev;
110                         } else {
111                                 other_device = dev;
112                         }
113                 }
114
115                 // ...and if there isn't any, just use demo then
116                 session->select_device(other_device ? other_device : demo_device);
117         }
118 }
119
120 MainWindow::~MainWindow()
121 {
122         while (!sessions_.empty())
123                 remove_session(sessions_.front());
124 }
125
126 shared_ptr<views::ViewBase> MainWindow::get_active_view() const
127 {
128         // If there's only one view, use it...
129         if (view_docks_.size() == 1)
130                 return view_docks_.begin()->second;
131
132         // ...otherwise find the dock widget the widget with focus is contained in
133         QObject *w = QApplication::focusWidget();
134         QDockWidget *dock = nullptr;
135
136         while (w) {
137             dock = qobject_cast<QDockWidget*>(w);
138             if (dock)
139                 break;
140             w = w->parent();
141         }
142
143         // Get the view contained in the dock widget
144         for (auto entry : view_docks_)
145                 if (entry.first == dock)
146                         return entry.second;
147
148         return nullptr;
149 }
150
151 shared_ptr<views::ViewBase> MainWindow::add_view(const QString &title,
152         views::ViewType type, Session &session)
153 {
154         GlobalSettings settings;
155         shared_ptr<views::ViewBase> v;
156
157         QMainWindow *main_window = nullptr;
158         for (auto entry : session_windows_)
159                 if (entry.first.get() == &session)
160                         main_window = entry.second;
161
162         assert(main_window);
163
164         shared_ptr<MainBar> main_bar = session.main_bar();
165
166         QDockWidget* dock = new QDockWidget(title, main_window);
167         dock->setObjectName(title);
168         main_window->addDockWidget(Qt::TopDockWidgetArea, dock);
169
170         // Insert a QMainWindow into the dock widget to allow for a tool bar
171         QMainWindow *dock_main = new QMainWindow(dock);
172         dock_main->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
173
174         if (type == views::ViewTypeTrace)
175                 // This view will be the main view if there's no main bar yet
176                 v = make_shared<views::TraceView::View>(session,
177                         (main_bar ? false : true), dock_main);
178
179         if (!v)
180                 return nullptr;
181
182         view_docks_[dock] = v;
183         session.register_view(v);
184
185         dock_main->setCentralWidget(v.get());
186         dock->setWidget(dock_main);
187
188         dock->setFeatures(QDockWidget::DockWidgetMovable |
189                 QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetClosable);
190
191         QAbstractButton *close_btn =
192                 dock->findChildren<QAbstractButton*>
193                         ("qt_dockwidget_closebutton").front();
194
195         connect(close_btn, SIGNAL(clicked(bool)),
196                 this, SLOT(on_view_close_clicked()));
197
198         connect(&session, SIGNAL(trigger_event(util::Timestamp)),
199                 qobject_cast<views::ViewBase*>(v.get()),
200                 SLOT(trigger_event(util::Timestamp)));
201
202         if (type == views::ViewTypeTrace) {
203                 views::TraceView::View *tv =
204                         qobject_cast<views::TraceView::View*>(v.get());
205
206                 tv->enable_coloured_bg(settings.value(GlobalSettings::Key_View_ColouredBG).toBool());
207                 tv->enable_show_sampling_points(settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool());
208
209                 if (!main_bar) {
210                         /* Initial view, create the main bar */
211                         main_bar = make_shared<MainBar>(session, this, tv);
212                         dock_main->addToolBar(main_bar.get());
213                         session.set_main_bar(main_bar);
214
215                         connect(main_bar.get(), SIGNAL(new_view(Session*)),
216                                 this, SLOT(on_new_view(Session*)));
217
218                         main_bar->action_view_show_cursors()->setChecked(tv->cursors_shown());
219
220                         /* For the main view we need to prevent the dock widget from
221                          * closing itself when its close button is clicked. This is
222                          * so we can confirm with the user first. Regular views don't
223                          * need this */
224                         close_btn->disconnect(SIGNAL(clicked()), dock, SLOT(close()));
225                 } else {
226                         /* Additional view, create a standard bar */
227                         pv::views::trace::StandardBar *standard_bar =
228                                 new pv::views::trace::StandardBar(session, this, tv);
229                         dock_main->addToolBar(standard_bar);
230
231                         standard_bar->action_view_show_cursors()->setChecked(tv->cursors_shown());
232                 }
233         }
234
235         return v;
236 }
237
238 void MainWindow::remove_view(shared_ptr<views::ViewBase> view)
239 {
240         for (shared_ptr<Session> session : sessions_) {
241                 if (!session->has_view(view))
242                         continue;
243
244                 // Find the dock the view is contained in and remove it
245                 for (auto entry : view_docks_)
246                         if (entry.second == view) {
247                                 // Remove the view from the session
248                                 session->deregister_view(view);
249
250                                 // Remove the view from its parent; otherwise, Qt will
251                                 // call deleteLater() on it, which causes a double free
252                                 // since the shared_ptr in view_docks_ doesn't know
253                                 // that Qt keeps a pointer to the view around
254                                 view->setParent(nullptr);
255
256                                 // Delete the view's dock widget and all widgets inside it
257                                 entry.first->deleteLater();
258
259                                 // Remove the dock widget from the list and stop iterating
260                                 view_docks_.erase(entry.first);
261                                 break;
262                         }
263         }
264 }
265
266 shared_ptr<Session> MainWindow::add_session()
267 {
268         static int last_session_id = 1;
269         QString name = tr("Session %1").arg(last_session_id++);
270
271         shared_ptr<Session> session = make_shared<Session>(device_manager_, name);
272
273         connect(session.get(), SIGNAL(add_view(const QString&, views::ViewType, Session*)),
274                 this, SLOT(on_add_view(const QString&, views::ViewType, Session*)));
275         connect(session.get(), SIGNAL(name_changed()),
276                 this, SLOT(on_session_name_changed()));
277         session_state_mapper_.setMapping(session.get(), session.get());
278         connect(session.get(), SIGNAL(capture_state_changed(int)),
279                 &session_state_mapper_, SLOT(map()));
280
281         sessions_.push_back(session);
282
283         QMainWindow *window = new QMainWindow();
284         window->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
285         session_windows_[session] = window;
286
287         int index = session_selector_.addTab(window, name);
288         session_selector_.setCurrentIndex(index);
289         last_focused_session_ = session;
290
291         window->setDockNestingEnabled(true);
292
293         shared_ptr<views::ViewBase> main_view =
294                 add_view(name, views::ViewTypeTrace, *session);
295
296         return session;
297 }
298
299 void MainWindow::remove_session(shared_ptr<Session> session)
300 {
301         int h = new_session_button_->height();
302
303         for (shared_ptr<views::ViewBase> view : session->views())
304                 remove_view(view);
305
306         QMainWindow *window = session_windows_.at(session);
307         session_selector_.removeTab(session_selector_.indexOf(window));
308
309         session_windows_.erase(session);
310
311         if (last_focused_session_ == session)
312                 last_focused_session_.reset();
313
314         sessions_.remove_if([&](shared_ptr<Session> s) {
315                 return s == session; });
316
317         if (sessions_.empty()) {
318                 // When there are no more tabs, the height of the QTabWidget
319                 // drops to zero. We must prevent this to keep the static
320                 // widgets visible
321                 for (QWidget *w : static_tab_widget_->findChildren<QWidget*>())
322                         w->setMinimumHeight(h);
323
324                 int margin = static_tab_widget_->layout()->contentsMargins().bottom();
325                 static_tab_widget_->setMinimumHeight(h + 2 * margin);
326                 session_selector_.setMinimumHeight(h + 2 * margin);
327
328                 // Update the window title if there is no view left to
329                 // generate focus change events
330                 setWindowTitle(WindowTitle);
331         }
332 }
333
334 void MainWindow::setup_ui()
335 {
336         setObjectName(QString::fromUtf8("MainWindow"));
337
338         setCentralWidget(&session_selector_);
339
340         // Set the window icon
341         QIcon icon;
342         icon.addFile(QString(":/icons/sigrok-logo-notext.png"));
343         setWindowIcon(icon);
344
345         view_sticky_scrolling_shortcut_ = new QShortcut(QKeySequence(Qt::Key_S), this, SLOT(on_view_sticky_scrolling_shortcut()));
346         view_sticky_scrolling_shortcut_->setAutoRepeat(false);
347
348         view_show_sampling_points_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Period), this, SLOT(on_view_show_sampling_points_shortcut()));
349         view_show_sampling_points_shortcut_->setAutoRepeat(false);
350
351         view_coloured_bg_shortcut_ = new QShortcut(QKeySequence(Qt::Key_B), this, SLOT(on_view_coloured_bg_shortcut()));
352         view_coloured_bg_shortcut_->setAutoRepeat(false);
353
354         // Set up the tab area
355         new_session_button_ = new QToolButton();
356         new_session_button_->setIcon(QIcon::fromTheme("document-new",
357                 QIcon(":/icons/document-new.png")));
358         new_session_button_->setToolTip(tr("Create New Session"));
359         new_session_button_->setAutoRaise(true);
360
361         run_stop_button_ = new QToolButton();
362         run_stop_button_->setAutoRaise(true);
363         run_stop_button_->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
364         run_stop_button_->setToolTip(tr("Start/Stop Acquisition"));
365
366         run_stop_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Space), run_stop_button_, SLOT(click()));
367         run_stop_shortcut_->setAutoRepeat(false);
368
369         settings_button_ = new QToolButton();
370         settings_button_->setIcon(QIcon::fromTheme("configure",
371                 QIcon(":/icons/configure.png")));
372         settings_button_->setToolTip(tr("Settings"));
373         settings_button_->setAutoRaise(true);
374
375         QFrame *separator1 = new QFrame();
376         separator1->setFrameStyle(QFrame::VLine | QFrame::Raised);
377         QFrame *separator2 = new QFrame();
378         separator2->setFrameStyle(QFrame::VLine | QFrame::Raised);
379
380         QHBoxLayout* layout = new QHBoxLayout();
381         layout->setContentsMargins(2, 2, 2, 2);
382         layout->addWidget(new_session_button_);
383         layout->addWidget(separator1);
384         layout->addWidget(run_stop_button_);
385         layout->addWidget(separator2);
386         layout->addWidget(settings_button_);
387
388         static_tab_widget_ = new QWidget();
389         static_tab_widget_->setLayout(layout);
390
391         session_selector_.setCornerWidget(static_tab_widget_, Qt::TopLeftCorner);
392         session_selector_.setTabsClosable(true);
393
394         close_application_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this, SLOT(close()));
395         close_application_shortcut_->setAutoRepeat(false);
396
397         close_current_tab_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this, SLOT(on_close_current_tab()));
398
399         connect(new_session_button_, SIGNAL(clicked(bool)),
400                 this, SLOT(on_new_session_clicked()));
401         connect(run_stop_button_, SIGNAL(clicked(bool)),
402                 this, SLOT(on_run_stop_clicked()));
403         connect(&session_state_mapper_, SIGNAL(mapped(QObject*)),
404                 this, SLOT(on_capture_state_changed(QObject*)));
405         connect(settings_button_, SIGNAL(clicked(bool)),
406                 this, SLOT(on_settings_clicked()));
407
408         connect(&session_selector_, SIGNAL(tabCloseRequested(int)),
409                 this, SLOT(on_tab_close_requested(int)));
410         connect(&session_selector_, SIGNAL(currentChanged(int)),
411                 this, SLOT(on_tab_changed(int)));
412
413
414         connect(static_cast<QApplication *>(QCoreApplication::instance()),
415                 SIGNAL(focusChanged(QWidget*, QWidget*)),
416                 this, SLOT(on_focus_changed()));
417 }
418
419 void MainWindow::save_ui_settings()
420 {
421         QSettings settings;
422         int id = 0;
423
424         settings.beginGroup("MainWindow");
425         settings.setValue("state", saveState());
426         settings.setValue("geometry", saveGeometry());
427         settings.endGroup();
428
429         for (shared_ptr<Session> session : sessions_) {
430                 // Ignore sessions using the demo device or no device at all
431                 if (session->device()) {
432                         shared_ptr<devices::HardwareDevice> device =
433                                 dynamic_pointer_cast< devices::HardwareDevice >
434                                 (session->device());
435
436                         if (device &&
437                                 device->hardware_device()->driver()->name() == "demo")
438                                 continue;
439
440                         settings.beginGroup("Session" + QString::number(id++));
441                         settings.remove("");  // Remove all keys in this group
442                         session->save_settings(settings);
443                         settings.endGroup();
444                 }
445         }
446
447         settings.setValue("sessions", id);
448 }
449
450 void MainWindow::restore_ui_settings()
451 {
452         QSettings settings;
453         int i, session_count;
454
455         settings.beginGroup("MainWindow");
456
457         if (settings.contains("geometry")) {
458                 restoreGeometry(settings.value("geometry").toByteArray());
459                 restoreState(settings.value("state").toByteArray());
460         } else
461                 resize(1000, 720);
462
463         settings.endGroup();
464
465         session_count = settings.value("sessions", 0).toInt();
466
467         for (i = 0; i < session_count; i++) {
468                 settings.beginGroup("Session" + QString::number(i));
469                 shared_ptr<Session> session = add_session();
470                 session->restore_settings(settings);
471                 settings.endGroup();
472         }
473 }
474
475 shared_ptr<Session> MainWindow::get_tab_session(int index) const
476 {
477         // Find the session that belongs to the tab's main window
478         for (auto entry : session_windows_)
479                 if (entry.second == session_selector_.widget(index))
480                         return entry.first;
481
482         return nullptr;
483 }
484
485 void MainWindow::closeEvent(QCloseEvent *event)
486 {
487         bool data_saved = true;
488
489         for (auto entry : session_windows_)
490                 if (!entry.first->data_saved())
491                         data_saved = false;
492
493         if (!data_saved && (QMessageBox::question(this, tr("Confirmation"),
494                 tr("There is unsaved data. Close anyway?"),
495                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::No)) {
496                 event->ignore();
497         } else {
498                 save_ui_settings();
499                 event->accept();
500         }
501 }
502
503 QMenu* MainWindow::createPopupMenu()
504 {
505         return nullptr;
506 }
507
508 bool MainWindow::restoreState(const QByteArray &state, int version)
509 {
510         (void)state;
511         (void)version;
512
513         // Do nothing. We don't want Qt to handle this, or else it
514         // will try to restore all the dock widgets and create havoc.
515
516         return false;
517 }
518
519 void MainWindow::session_error(const QString text, const QString info_text)
520 {
521         QMetaObject::invokeMethod(this, "show_session_error",
522                 Qt::QueuedConnection, Q_ARG(QString, text),
523                 Q_ARG(QString, info_text));
524 }
525
526 void MainWindow::show_session_error(const QString text, const QString info_text)
527 {
528         QMessageBox msg(this);
529         msg.setText(text);
530         msg.setInformativeText(info_text);
531         msg.setStandardButtons(QMessageBox::Ok);
532         msg.setIcon(QMessageBox::Warning);
533         msg.exec();
534 }
535
536 void MainWindow::on_add_view(const QString &title, views::ViewType type,
537         Session *session)
538 {
539         // We get a pointer and need a reference
540         for (shared_ptr<Session> s : sessions_)
541                 if (s.get() == session)
542                         add_view(title, type, *s);
543 }
544
545 void MainWindow::on_focus_changed()
546 {
547         shared_ptr<views::ViewBase> view = get_active_view();
548
549         if (view) {
550                 for (shared_ptr<Session> session : sessions_) {
551                         if (session->has_view(view)) {
552                                 if (session != last_focused_session_) {
553                                         // Activate correct tab if necessary
554                                         shared_ptr<Session> tab_session = get_tab_session(
555                                                 session_selector_.currentIndex());
556                                         if (tab_session != session)
557                                                 session_selector_.setCurrentWidget(
558                                                         session_windows_.at(session));
559
560                                         on_focused_session_changed(session);
561                                 }
562
563                                 break;
564                         }
565                 }
566         }
567
568         if (sessions_.empty())
569                 setWindowTitle(WindowTitle);
570 }
571
572 void MainWindow::on_focused_session_changed(shared_ptr<Session> session)
573 {
574         last_focused_session_ = session;
575
576         setWindowTitle(session->name() + " - " + WindowTitle);
577
578         // Update the state of the run/stop button, too
579         on_capture_state_changed(session.get());
580 }
581
582 void MainWindow::on_new_session_clicked()
583 {
584         add_session();
585 }
586
587 void MainWindow::on_run_stop_clicked()
588 {
589         shared_ptr<Session> session = last_focused_session_;
590
591         if (!session)
592                 return;
593
594         switch (session->get_capture_state()) {
595         case Session::Stopped:
596                 session->start_capture([&](QString message) {
597                         session_error("Capture failed", message); });
598                 break;
599         case Session::AwaitingTrigger:
600         case Session::Running:
601                 session->stop_capture();
602                 break;
603         }
604 }
605
606 void MainWindow::on_settings_clicked()
607 {
608         dialogs::Settings dlg(device_manager_);
609         dlg.exec();
610 }
611
612 void MainWindow::on_session_name_changed()
613 {
614         // Update the corresponding dock widget's name(s)
615         Session *session = qobject_cast<Session*>(QObject::sender());
616         assert(session);
617
618         for (shared_ptr<views::ViewBase> view : session->views()) {
619                 // Get the dock that contains the view
620                 for (auto entry : view_docks_)
621                         if (entry.second == view) {
622                                 entry.first->setObjectName(session->name());
623                                 entry.first->setWindowTitle(session->name());
624                         }
625         }
626
627         // Update the tab widget by finding the main window and the tab from that
628         for (auto entry : session_windows_)
629                 if (entry.first.get() == session) {
630                         QMainWindow *window = entry.second;
631                         const int index = session_selector_.indexOf(window);
632                         session_selector_.setTabText(index, session->name());
633                 }
634
635         // Refresh window title if the affected session has focus
636         if (session == last_focused_session_.get())
637                 setWindowTitle(session->name() + " - " + WindowTitle);
638 }
639
640 void MainWindow::on_capture_state_changed(QObject *obj)
641 {
642         Session *caller = qobject_cast<Session*>(obj);
643
644         // Ignore if caller is not the currently focused session
645         // unless there is only one session
646         if ((sessions_.size() > 1) && (caller != last_focused_session_.get()))
647                 return;
648
649         int state = caller->get_capture_state();
650
651         const QIcon *icons[] = {&icon_grey_, &icon_red_, &icon_green_};
652         run_stop_button_->setIcon(*icons[state]);
653         run_stop_button_->setText((state == pv::Session::Stopped) ?
654                 tr("Run") : tr("Stop"));
655 }
656
657 void MainWindow::on_new_view(Session *session)
658 {
659         // We get a pointer and need a reference
660         for (shared_ptr<Session> s : sessions_)
661                 if (s.get() == session)
662                         add_view(session->name(), views::ViewTypeTrace, *s);
663 }
664
665 void MainWindow::on_view_close_clicked()
666 {
667         // Find the dock widget that contains the close button that was clicked
668         QObject *w = QObject::sender();
669         QDockWidget *dock = nullptr;
670
671         while (w) {
672             dock = qobject_cast<QDockWidget*>(w);
673             if (dock)
674                 break;
675             w = w->parent();
676         }
677
678         // Get the view contained in the dock widget
679         shared_ptr<views::ViewBase> view;
680
681         for (auto entry : view_docks_)
682                 if (entry.first == dock)
683                         view = entry.second;
684
685         // Deregister the view
686         for (shared_ptr<Session> session : sessions_) {
687                 if (!session->has_view(view))
688                         continue;
689
690                 // Also destroy the entire session if its main view is closing...
691                 if (view == session->main_view()) {
692                         // ...but only if data is saved or the user confirms closing
693                         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
694                                 tr("This session contains unsaved data. Close it anyway?"),
695                                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
696                                 remove_session(session);
697                         break;
698                 } else
699                         // All other views can be closed at any time as no data will be lost
700                         remove_view(view);
701         }
702 }
703
704 void MainWindow::on_tab_changed(int index)
705 {
706         shared_ptr<Session> session = get_tab_session(index);
707
708         if (session)
709                 on_focused_session_changed(session);
710 }
711
712 void MainWindow::on_tab_close_requested(int index)
713 {
714         shared_ptr<Session> session = get_tab_session(index);
715
716         assert(session);
717
718         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
719                 tr("This session contains unsaved data. Close it anyway?"),
720                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
721                 remove_session(session);
722 }
723
724 void MainWindow::on_view_coloured_bg_shortcut()
725 {
726         GlobalSettings settings;
727
728         bool state = settings.value(GlobalSettings::Key_View_ColouredBG).toBool();
729         settings.setValue(GlobalSettings::Key_View_ColouredBG, !state);
730 }
731
732 void MainWindow::on_view_sticky_scrolling_shortcut()
733 {
734         GlobalSettings settings;
735
736         bool state = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
737         settings.setValue(GlobalSettings::Key_View_StickyScrolling, !state);
738 }
739
740 void MainWindow::on_view_show_sampling_points_shortcut()
741 {
742         GlobalSettings settings;
743
744         bool state = settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();
745         settings.setValue(GlobalSettings::Key_View_ShowSamplingPoints, !state);
746 }
747
748 void MainWindow::on_settingViewColouredBg_changed(const QVariant new_value)
749 {
750         bool state = new_value.toBool();
751
752         for (auto entry : view_docks_) {
753                 shared_ptr<views::ViewBase> viewbase = entry.second;
754
755                 // Only trace views have this setting
756                 views::TraceView::View* view =
757                                 qobject_cast<views::TraceView::View*>(viewbase.get());
758                 if (view)
759                         view->enable_coloured_bg(state);
760         }
761 }
762
763 void MainWindow::on_settingViewShowSamplingPoints_changed(const QVariant new_value)
764 {
765         bool state = new_value.toBool();
766
767         for (auto entry : view_docks_) {
768                 shared_ptr<views::ViewBase> viewbase = entry.second;
769
770                 // Only trace views have this setting
771                 views::TraceView::View* view =
772                                 qobject_cast<views::TraceView::View*>(viewbase.get());
773                 if (view)
774                         view->enable_show_sampling_points(state);
775         }
776 }
777
778 void MainWindow::on_close_current_tab()
779 {
780         int tab = session_selector_.currentIndex();
781
782         on_tab_close_requested(tab);
783 }
784
785 } // namespace pv