Implement customizable cursor fill color
[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 <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 #include <libsigrokcxx/libsigrokcxx.hpp>
53
54 using std::dynamic_pointer_cast;
55 using std::make_shared;
56 using std::shared_ptr;
57 using std::string;
58
59 namespace pv {
60
61 namespace view {
62 class ViewItem;
63 }
64
65 using toolbars::MainBar;
66
67 const QString MainWindow::WindowTitle = tr("PulseView");
68
69 MainWindow::MainWindow(DeviceManager &device_manager, QWidget *parent) :
70         QMainWindow(parent),
71         device_manager_(device_manager),
72         session_selector_(this),
73         session_state_mapper_(this),
74         icon_red_(":/icons/status-red.svg"),
75         icon_green_(":/icons/status-green.svg"),
76         icon_grey_(":/icons/status-grey.svg")
77 {
78         GlobalSettings::add_change_handler(this);
79
80         setup_ui();
81         restore_ui_settings();
82 }
83
84 MainWindow::~MainWindow()
85 {
86         GlobalSettings::remove_change_handler(this);
87
88         while (!sessions_.empty())
89                 remove_session(sessions_.front());
90 }
91
92 void MainWindow::show_session_error(const QString text, const QString info_text)
93 {
94         // TODO Emulate noquote()
95         qDebug() << "Notifying user of session error:" << info_text;
96
97         QMessageBox msg;
98         msg.setText(text);
99         msg.setInformativeText(info_text);
100         msg.setStandardButtons(QMessageBox::Ok);
101         msg.setIcon(QMessageBox::Warning);
102         msg.exec();
103 }
104
105 shared_ptr<views::ViewBase> MainWindow::get_active_view() const
106 {
107         // If there's only one view, use it...
108         if (view_docks_.size() == 1)
109                 return view_docks_.begin()->second;
110
111         // ...otherwise find the dock widget the widget with focus is contained in
112         QObject *w = QApplication::focusWidget();
113         QDockWidget *dock = nullptr;
114
115         while (w) {
116                 dock = qobject_cast<QDockWidget*>(w);
117                 if (dock)
118                         break;
119                 w = w->parent();
120         }
121
122         // Get the view contained in the dock widget
123         for (auto& entry : view_docks_)
124                 if (entry.first == dock)
125                         return entry.second;
126
127         return nullptr;
128 }
129
130 shared_ptr<views::ViewBase> MainWindow::add_view(const QString &title,
131         views::ViewType type, Session &session)
132 {
133         GlobalSettings settings;
134         shared_ptr<views::ViewBase> v;
135
136         QMainWindow *main_window = nullptr;
137         for (auto& entry : session_windows_)
138                 if (entry.first.get() == &session)
139                         main_window = entry.second;
140
141         assert(main_window);
142
143         shared_ptr<MainBar> main_bar = session.main_bar();
144
145         QDockWidget* dock = new QDockWidget(title, main_window);
146         dock->setObjectName(title);
147         main_window->addDockWidget(Qt::TopDockWidgetArea, dock);
148
149         // Insert a QMainWindow into the dock widget to allow for a tool bar
150         QMainWindow *dock_main = new QMainWindow(dock);
151         dock_main->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
152
153         if (type == views::ViewTypeTrace)
154                 // This view will be the main view if there's no main bar yet
155                 v = make_shared<views::trace::View>(session,
156                         (main_bar ? false : true), dock_main);
157
158         if (!v)
159                 return nullptr;
160
161         view_docks_[dock] = v;
162         session.register_view(v);
163
164         dock_main->setCentralWidget(v.get());
165         dock->setWidget(dock_main);
166
167         dock->setContextMenuPolicy(Qt::PreventContextMenu);
168         dock->setFeatures(QDockWidget::DockWidgetMovable |
169                 QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetClosable);
170
171         QAbstractButton *close_btn =
172                 dock->findChildren<QAbstractButton*>("qt_dockwidget_closebutton")  // clazy:exclude=detaching-temporary
173                         .front();
174
175         connect(close_btn, SIGNAL(clicked(bool)),
176                 this, SLOT(on_view_close_clicked()));
177
178         connect(&session, SIGNAL(trigger_event(int, util::Timestamp)),
179                 qobject_cast<views::ViewBase*>(v.get()),
180                 SLOT(trigger_event(int, util::Timestamp)));
181
182         if (type == views::ViewTypeTrace) {
183                 views::trace::View *tv =
184                         qobject_cast<views::trace::View*>(v.get());
185
186                 tv->enable_colored_bg(settings.value(GlobalSettings::Key_View_ColoredBG).toBool());
187                 tv->enable_show_sampling_points(settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool());
188                 tv->enable_show_analog_minor_grid(settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool());
189
190                 if (!main_bar) {
191                         /* Initial view, create the main bar */
192                         main_bar = make_shared<MainBar>(session, this, tv);
193                         dock_main->addToolBar(main_bar.get());
194                         session.set_main_bar(main_bar);
195
196                         connect(main_bar.get(), SIGNAL(new_view(Session*)),
197                                 this, SLOT(on_new_view(Session*)));
198
199                         main_bar->action_view_show_cursors()->setChecked(tv->cursors_shown());
200
201                         /* For the main view we need to prevent the dock widget from
202                          * closing itself when its close button is clicked. This is
203                          * so we can confirm with the user first. Regular views don't
204                          * need this */
205                         close_btn->disconnect(SIGNAL(clicked()), dock, SLOT(close()));
206                 } else {
207                         /* Additional view, create a standard bar */
208                         pv::views::trace::StandardBar *standard_bar =
209                                 new pv::views::trace::StandardBar(session, this, tv);
210                         dock_main->addToolBar(standard_bar);
211
212                         standard_bar->action_view_show_cursors()->setChecked(tv->cursors_shown());
213                 }
214         }
215
216         return v;
217 }
218
219 void MainWindow::remove_view(shared_ptr<views::ViewBase> view)
220 {
221         for (shared_ptr<Session> session : sessions_) {
222                 if (!session->has_view(view))
223                         continue;
224
225                 // Find the dock the view is contained in and remove it
226                 for (auto& entry : view_docks_)
227                         if (entry.second == view) {
228                                 // Remove the view from the session
229                                 session->deregister_view(view);
230
231                                 // Remove the view from its parent; otherwise, Qt will
232                                 // call deleteLater() on it, which causes a double free
233                                 // since the shared_ptr in view_docks_ doesn't know
234                                 // that Qt keeps a pointer to the view around
235                                 view->setParent(nullptr);
236
237                                 // Delete the view's dock widget and all widgets inside it
238                                 entry.first->deleteLater();
239
240                                 // Remove the dock widget from the list and stop iterating
241                                 view_docks_.erase(entry.first);
242                                 break;
243                         }
244         }
245 }
246
247 shared_ptr<Session> MainWindow::add_session()
248 {
249         static int last_session_id = 1;
250         QString name = tr("Session %1").arg(last_session_id++);
251
252         shared_ptr<Session> session = make_shared<Session>(device_manager_, name);
253
254         connect(session.get(), SIGNAL(add_view(const QString&, views::ViewType, Session*)),
255                 this, SLOT(on_add_view(const QString&, views::ViewType, Session*)));
256         connect(session.get(), SIGNAL(name_changed()),
257                 this, SLOT(on_session_name_changed()));
258         session_state_mapper_.setMapping(session.get(), session.get());
259         connect(session.get(), SIGNAL(capture_state_changed(int)),
260                 &session_state_mapper_, SLOT(map()));
261
262         sessions_.push_back(session);
263
264         QMainWindow *window = new QMainWindow();
265         window->setWindowFlags(Qt::Widget);  // Remove Qt::Window flag
266         session_windows_[session] = window;
267
268         int index = session_selector_.addTab(window, name);
269         session_selector_.setCurrentIndex(index);
270         last_focused_session_ = session;
271
272         window->setDockNestingEnabled(true);
273
274         shared_ptr<views::ViewBase> main_view =
275                 add_view(name, views::ViewTypeTrace, *session);
276
277         return session;
278 }
279
280 void MainWindow::remove_session(shared_ptr<Session> session)
281 {
282         // Determine the height of the button before it collapses
283         int h = new_session_button_->height();
284
285         // Stop capture while the session still exists so that the UI can be
286         // updated in case we're currently running. If so, this will schedule a
287         // call to our on_capture_state_changed() slot for the next run of the
288         // event loop. We need to have this executed immediately or else it will
289         // be dismissed since the session object will be deleted by the time we
290         // leave this method and the event loop gets a chance to run again.
291         session->stop_capture();
292         QApplication::processEvents();
293
294         for (const shared_ptr<views::ViewBase>& view : session->views())
295                 remove_view(view);
296
297         QMainWindow *window = session_windows_.at(session);
298         session_selector_.removeTab(session_selector_.indexOf(window));
299
300         session_windows_.erase(session);
301
302         if (last_focused_session_ == session)
303                 last_focused_session_.reset();
304
305         // Remove the session from our list of sessions (which also destroys it)
306         sessions_.remove_if([&](shared_ptr<Session> s) {
307                 return s == session; });
308
309         if (sessions_.empty()) {
310                 // When there are no more tabs, the height of the QTabWidget
311                 // drops to zero. We must prevent this to keep the static
312                 // widgets visible
313                 for (QWidget *w : static_tab_widget_->findChildren<QWidget*>())  // clazy:exclude=range-loop
314                         w->setMinimumHeight(h);
315
316                 int margin = static_tab_widget_->layout()->contentsMargins().bottom();
317                 static_tab_widget_->setMinimumHeight(h + 2 * margin);
318                 session_selector_.setMinimumHeight(h + 2 * margin);
319
320                 // Update the window title if there is no view left to
321                 // generate focus change events
322                 setWindowTitle(WindowTitle);
323         }
324 }
325
326 void MainWindow::add_session_with_file(string open_file_name,
327         string open_file_format)
328 {
329         shared_ptr<Session> session = add_session();
330         session->load_init_file(open_file_name, open_file_format);
331 }
332
333 void MainWindow::add_default_session()
334 {
335         // Only add the default session if there would be no session otherwise
336         if (sessions_.size() > 0)
337                 return;
338
339         shared_ptr<Session> session = add_session();
340
341         // Check the list of available devices. Prefer the one that was
342         // found with user supplied scan specs (if applicable). Then try
343         // one of the auto detected devices that are not the demo device.
344         // Pick demo in the absence of "genuine" hardware devices.
345         shared_ptr<devices::HardwareDevice> user_device, other_device, demo_device;
346         for (const shared_ptr<devices::HardwareDevice>& dev : device_manager_.devices()) {
347                 if (dev == device_manager_.user_spec_device()) {
348                         user_device = dev;
349                 } else if (dev->hardware_device()->driver()->name() == "demo") {
350                         demo_device = dev;
351                 } else {
352                         other_device = dev;
353                 }
354         }
355         if (user_device)
356                 session->select_device(user_device);
357         else if (other_device)
358                 session->select_device(other_device);
359         else
360                 session->select_device(demo_device);
361 }
362
363 void MainWindow::save_sessions()
364 {
365         QSettings settings;
366         int id = 0;
367
368         for (shared_ptr<Session>& session : sessions_) {
369                 // Ignore sessions using the demo device or no device at all
370                 if (session->device()) {
371                         shared_ptr<devices::HardwareDevice> device =
372                                 dynamic_pointer_cast< devices::HardwareDevice >
373                                 (session->device());
374
375                         if (device &&
376                                 device->hardware_device()->driver()->name() == "demo")
377                                 continue;
378
379                         settings.beginGroup("Session" + QString::number(id++));
380                         settings.remove("");  // Remove all keys in this group
381                         session->save_settings(settings);
382                         settings.endGroup();
383                 }
384         }
385
386         settings.setValue("sessions", id);
387 }
388
389 void MainWindow::restore_sessions()
390 {
391         QSettings settings;
392         int i, session_count;
393
394         session_count = settings.value("sessions", 0).toInt();
395
396         for (i = 0; i < session_count; i++) {
397                 settings.beginGroup("Session" + QString::number(i));
398                 shared_ptr<Session> session = add_session();
399                 session->restore_settings(settings);
400                 settings.endGroup();
401         }
402 }
403
404 void MainWindow::on_setting_changed(const QString &key, const QVariant &value)
405 {
406         if (key == GlobalSettings::Key_View_ColoredBG)
407                 on_settingViewColoredBg_changed(value);
408
409         if (key == GlobalSettings::Key_View_ShowSamplingPoints)
410                 on_settingViewShowSamplingPoints_changed(value);
411
412         if (key == GlobalSettings::Key_View_ShowAnalogMinorGrid)
413                 on_settingViewShowAnalogMinorGrid_changed(value);
414 }
415
416 void MainWindow::setup_ui()
417 {
418         setObjectName(QString::fromUtf8("MainWindow"));
419
420         setCentralWidget(&session_selector_);
421
422         // Set the window icon
423         QIcon icon;
424         icon.addFile(QString(":/icons/pulseview.png"));
425         setWindowIcon(icon);
426
427         view_sticky_scrolling_shortcut_ = new QShortcut(QKeySequence(Qt::Key_S), this, SLOT(on_view_sticky_scrolling_shortcut()));
428         view_sticky_scrolling_shortcut_->setAutoRepeat(false);
429
430         view_show_sampling_points_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Period), this, SLOT(on_view_show_sampling_points_shortcut()));
431         view_show_sampling_points_shortcut_->setAutoRepeat(false);
432
433         view_show_analog_minor_grid_shortcut_ = new QShortcut(QKeySequence(Qt::Key_G), this, SLOT(on_view_show_analog_minor_grid_shortcut()));
434         view_show_analog_minor_grid_shortcut_->setAutoRepeat(false);
435
436         view_colored_bg_shortcut_ = new QShortcut(QKeySequence(Qt::Key_B), this, SLOT(on_view_colored_bg_shortcut()));
437         view_colored_bg_shortcut_->setAutoRepeat(false);
438
439         // Set up the tab area
440         new_session_button_ = new QToolButton();
441         new_session_button_->setIcon(QIcon::fromTheme("document-new",
442                 QIcon(":/icons/document-new.png")));
443         new_session_button_->setToolTip(tr("Create New Session"));
444         new_session_button_->setAutoRaise(true);
445
446         run_stop_button_ = new QToolButton();
447         run_stop_button_->setAutoRaise(true);
448         run_stop_button_->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
449         run_stop_button_->setToolTip(tr("Start/Stop Acquisition"));
450
451         run_stop_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Space), run_stop_button_, SLOT(click()));
452         run_stop_shortcut_->setAutoRepeat(false);
453
454         settings_button_ = new QToolButton();
455         settings_button_->setIcon(QIcon::fromTheme("preferences-system",
456                 QIcon(":/icons/preferences-system.png")));
457         settings_button_->setToolTip(tr("Settings"));
458         settings_button_->setAutoRaise(true);
459
460         QFrame *separator1 = new QFrame();
461         separator1->setFrameStyle(QFrame::VLine | QFrame::Raised);
462         QFrame *separator2 = new QFrame();
463         separator2->setFrameStyle(QFrame::VLine | QFrame::Raised);
464
465         QHBoxLayout* layout = new QHBoxLayout();
466         layout->setContentsMargins(2, 2, 2, 2);
467         layout->addWidget(new_session_button_);
468         layout->addWidget(separator1);
469         layout->addWidget(run_stop_button_);
470         layout->addWidget(separator2);
471         layout->addWidget(settings_button_);
472
473         static_tab_widget_ = new QWidget();
474         static_tab_widget_->setLayout(layout);
475
476         session_selector_.setCornerWidget(static_tab_widget_, Qt::TopLeftCorner);
477         session_selector_.setTabsClosable(true);
478
479         close_application_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_Q), this, SLOT(close()));
480         close_application_shortcut_->setAutoRepeat(false);
481
482         close_current_tab_shortcut_ = new QShortcut(QKeySequence(Qt::CTRL + Qt::Key_W), this, SLOT(on_close_current_tab()));
483
484         connect(new_session_button_, SIGNAL(clicked(bool)),
485                 this, SLOT(on_new_session_clicked()));
486         connect(run_stop_button_, SIGNAL(clicked(bool)),
487                 this, SLOT(on_run_stop_clicked()));
488         connect(&session_state_mapper_, SIGNAL(mapped(QObject*)),
489                 this, SLOT(on_capture_state_changed(QObject*)));
490         connect(settings_button_, SIGNAL(clicked(bool)),
491                 this, SLOT(on_settings_clicked()));
492
493         connect(&session_selector_, SIGNAL(tabCloseRequested(int)),
494                 this, SLOT(on_tab_close_requested(int)));
495         connect(&session_selector_, SIGNAL(currentChanged(int)),
496                 this, SLOT(on_tab_changed(int)));
497
498
499         connect(static_cast<QApplication *>(QCoreApplication::instance()),
500                 SIGNAL(focusChanged(QWidget*, QWidget*)),
501                 this, SLOT(on_focus_changed()));
502 }
503
504 void MainWindow::save_ui_settings()
505 {
506         QSettings settings;
507
508         settings.beginGroup("MainWindow");
509         settings.setValue("state", saveState());
510         settings.setValue("geometry", saveGeometry());
511         settings.endGroup();
512 }
513
514 void MainWindow::restore_ui_settings()
515 {
516         QSettings settings;
517
518         settings.beginGroup("MainWindow");
519
520         if (settings.contains("geometry")) {
521                 restoreGeometry(settings.value("geometry").toByteArray());
522                 restoreState(settings.value("state").toByteArray());
523         } else
524                 resize(1000, 720);
525
526         settings.endGroup();
527 }
528
529 shared_ptr<Session> MainWindow::get_tab_session(int index) const
530 {
531         // Find the session that belongs to the tab's main window
532         for (auto& entry : session_windows_)
533                 if (entry.second == session_selector_.widget(index))
534                         return entry.first;
535
536         return nullptr;
537 }
538
539 void MainWindow::closeEvent(QCloseEvent *event)
540 {
541         bool data_saved = true;
542
543         for (auto& entry : session_windows_)
544                 if (!entry.first->data_saved())
545                         data_saved = false;
546
547         if (!data_saved && (QMessageBox::question(this, tr("Confirmation"),
548                 tr("There is unsaved data. Close anyway?"),
549                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::No)) {
550                 event->ignore();
551         } else {
552                 save_ui_settings();
553                 save_sessions();
554                 event->accept();
555         }
556 }
557
558 QMenu* MainWindow::createPopupMenu()
559 {
560         return nullptr;
561 }
562
563 bool MainWindow::restoreState(const QByteArray &state, int version)
564 {
565         (void)state;
566         (void)version;
567
568         // Do nothing. We don't want Qt to handle this, or else it
569         // will try to restore all the dock widgets and create havoc.
570
571         return false;
572 }
573
574 void MainWindow::on_add_view(const QString &title, views::ViewType type,
575         Session *session)
576 {
577         // We get a pointer and need a reference
578         for (shared_ptr<Session>& s : sessions_)
579                 if (s.get() == session)
580                         add_view(title, type, *s);
581 }
582
583 void MainWindow::on_focus_changed()
584 {
585         shared_ptr<views::ViewBase> view = get_active_view();
586
587         if (view) {
588                 for (shared_ptr<Session> session : sessions_) {
589                         if (session->has_view(view)) {
590                                 if (session != last_focused_session_) {
591                                         // Activate correct tab if necessary
592                                         shared_ptr<Session> tab_session = get_tab_session(
593                                                 session_selector_.currentIndex());
594                                         if (tab_session != session)
595                                                 session_selector_.setCurrentWidget(
596                                                         session_windows_.at(session));
597
598                                         on_focused_session_changed(session);
599                                 }
600
601                                 break;
602                         }
603                 }
604         }
605
606         if (sessions_.empty())
607                 setWindowTitle(WindowTitle);
608 }
609
610 void MainWindow::on_focused_session_changed(shared_ptr<Session> session)
611 {
612         last_focused_session_ = session;
613
614         setWindowTitle(session->name() + " - " + WindowTitle);
615
616         // Update the state of the run/stop button, too
617         on_capture_state_changed(session.get());
618 }
619
620 void MainWindow::on_new_session_clicked()
621 {
622         add_session();
623 }
624
625 void MainWindow::on_run_stop_clicked()
626 {
627         shared_ptr<Session> session = last_focused_session_;
628
629         if (!session)
630                 return;
631
632         switch (session->get_capture_state()) {
633         case Session::Stopped:
634                 session->start_capture([&](QString message) {
635                         show_session_error("Capture failed", message); });
636                 break;
637         case Session::AwaitingTrigger:
638         case Session::Running:
639                 session->stop_capture();
640                 break;
641         }
642 }
643
644 void MainWindow::on_settings_clicked()
645 {
646         dialogs::Settings dlg(device_manager_);
647         dlg.exec();
648 }
649
650 void MainWindow::on_session_name_changed()
651 {
652         // Update the corresponding dock widget's name(s)
653         Session *session = qobject_cast<Session*>(QObject::sender());
654         assert(session);
655
656         for (const shared_ptr<views::ViewBase>& view : session->views()) {
657                 // Get the dock that contains the view
658                 for (auto& entry : view_docks_)
659                         if (entry.second == view) {
660                                 entry.first->setObjectName(session->name());
661                                 entry.first->setWindowTitle(session->name());
662                         }
663         }
664
665         // Update the tab widget by finding the main window and the tab from that
666         for (auto& entry : session_windows_)
667                 if (entry.first.get() == session) {
668                         QMainWindow *window = entry.second;
669                         const int index = session_selector_.indexOf(window);
670                         session_selector_.setTabText(index, session->name());
671                 }
672
673         // Refresh window title if the affected session has focus
674         if (session == last_focused_session_.get())
675                 setWindowTitle(session->name() + " - " + WindowTitle);
676 }
677
678 void MainWindow::on_capture_state_changed(QObject *obj)
679 {
680         Session *caller = qobject_cast<Session*>(obj);
681
682         // Ignore if caller is not the currently focused session
683         // unless there is only one session
684         if ((sessions_.size() > 1) && (caller != last_focused_session_.get()))
685                 return;
686
687         int state = caller->get_capture_state();
688
689         const QIcon *icons[] = {&icon_grey_, &icon_red_, &icon_green_};
690         run_stop_button_->setIcon(*icons[state]);
691         run_stop_button_->setText((state == pv::Session::Stopped) ?
692                 tr("Run") : tr("Stop"));
693 }
694
695 void MainWindow::on_new_view(Session *session)
696 {
697         // We get a pointer and need a reference
698         for (shared_ptr<Session>& s : sessions_)
699                 if (s.get() == session)
700                         add_view(session->name(), views::ViewTypeTrace, *s);
701 }
702
703 void MainWindow::on_view_close_clicked()
704 {
705         // Find the dock widget that contains the close button that was clicked
706         QObject *w = QObject::sender();
707         QDockWidget *dock = nullptr;
708
709         while (w) {
710             dock = qobject_cast<QDockWidget*>(w);
711             if (dock)
712                 break;
713             w = w->parent();
714         }
715
716         // Get the view contained in the dock widget
717         shared_ptr<views::ViewBase> view;
718
719         for (auto& entry : view_docks_)
720                 if (entry.first == dock)
721                         view = entry.second;
722
723         // Deregister the view
724         for (shared_ptr<Session> session : sessions_) {
725                 if (!session->has_view(view))
726                         continue;
727
728                 // Also destroy the entire session if its main view is closing...
729                 if (view == session->main_view()) {
730                         // ...but only if data is saved or the user confirms closing
731                         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
732                                 tr("This session contains unsaved data. Close it anyway?"),
733                                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
734                                 remove_session(session);
735                         break;
736                 } else
737                         // All other views can be closed at any time as no data will be lost
738                         remove_view(view);
739         }
740 }
741
742 void MainWindow::on_tab_changed(int index)
743 {
744         shared_ptr<Session> session = get_tab_session(index);
745
746         if (session)
747                 on_focused_session_changed(session);
748 }
749
750 void MainWindow::on_tab_close_requested(int index)
751 {
752         shared_ptr<Session> session = get_tab_session(index);
753
754         if (!session)
755                 return;
756
757         if (session->data_saved() || (QMessageBox::question(this, tr("Confirmation"),
758                 tr("This session contains unsaved data. Close it anyway?"),
759                 QMessageBox::Yes | QMessageBox::No) == QMessageBox::Yes))
760                 remove_session(session);
761 }
762
763 void MainWindow::on_view_colored_bg_shortcut()
764 {
765         GlobalSettings settings;
766
767         bool state = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
768         settings.setValue(GlobalSettings::Key_View_ColoredBG, !state);
769 }
770
771 void MainWindow::on_view_sticky_scrolling_shortcut()
772 {
773         GlobalSettings settings;
774
775         bool state = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
776         settings.setValue(GlobalSettings::Key_View_StickyScrolling, !state);
777 }
778
779 void MainWindow::on_view_show_sampling_points_shortcut()
780 {
781         GlobalSettings settings;
782
783         bool state = settings.value(GlobalSettings::Key_View_ShowSamplingPoints).toBool();
784         settings.setValue(GlobalSettings::Key_View_ShowSamplingPoints, !state);
785 }
786
787 void MainWindow::on_view_show_analog_minor_grid_shortcut()
788 {
789         GlobalSettings settings;
790
791         bool state = settings.value(GlobalSettings::Key_View_ShowAnalogMinorGrid).toBool();
792         settings.setValue(GlobalSettings::Key_View_ShowAnalogMinorGrid, !state);
793 }
794
795 void MainWindow::on_settingViewColoredBg_changed(const QVariant new_value)
796 {
797         bool state = new_value.toBool();
798
799         for (auto& entry : view_docks_) {
800                 shared_ptr<views::ViewBase> viewbase = entry.second;
801
802                 // Only trace views have this setting
803                 views::trace::View* view =
804                                 qobject_cast<views::trace::View*>(viewbase.get());
805                 if (view)
806                         view->enable_colored_bg(state);
807         }
808 }
809
810 void MainWindow::on_settingViewShowSamplingPoints_changed(const QVariant new_value)
811 {
812         bool state = new_value.toBool();
813
814         for (auto& entry : view_docks_) {
815                 shared_ptr<views::ViewBase> viewbase = entry.second;
816
817                 // Only trace views have this setting
818                 views::trace::View* view =
819                                 qobject_cast<views::trace::View*>(viewbase.get());
820                 if (view)
821                         view->enable_show_sampling_points(state);
822         }
823 }
824
825 void MainWindow::on_settingViewShowAnalogMinorGrid_changed(const QVariant new_value)
826 {
827         bool state = new_value.toBool();
828
829         for (auto& entry : view_docks_) {
830                 shared_ptr<views::ViewBase> viewbase = entry.second;
831
832                 // Only trace views have this setting
833                 views::trace::View* view =
834                                 qobject_cast<views::trace::View*>(viewbase.get());
835                 if (view)
836                         view->enable_show_analog_minor_grid(state);
837         }
838 }
839
840 void MainWindow::on_close_current_tab()
841 {
842         int tab = session_selector_.currentIndex();
843
844         on_tab_close_requested(tab);
845 }
846
847 } // namespace pv