license: remove FSF postal address from boiler plate license text
[pulseview.git] / pv / toolbars / mainbar.cpp
1 /*
2  * This file is part of the PulseView project.
3  *
4  * Copyright (C) 2012-2015 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 #include <extdef.h>
21
22 #include <algorithm>
23 #include <cassert>
24
25 #include <QAction>
26 #include <QDebug>
27 #include <QFileDialog>
28 #include <QHelpEvent>
29 #include <QMenu>
30 #include <QMessageBox>
31 #include <QSettings>
32 #include <QToolTip>
33
34 #include "mainbar.hpp"
35
36 #include <boost/algorithm/string/join.hpp>
37
38 #include <pv/devicemanager.hpp>
39 #include <pv/devices/hardwaredevice.hpp>
40 #include <pv/devices/inputfile.hpp>
41 #include <pv/devices/sessionfile.hpp>
42 #include <pv/dialogs/connect.hpp>
43 #include <pv/dialogs/inputoutputoptions.hpp>
44 #include <pv/dialogs/storeprogress.hpp>
45 #include <pv/mainwindow.hpp>
46 #include <pv/popups/deviceoptions.hpp>
47 #include <pv/popups/channels.hpp>
48 #include <pv/util.hpp>
49 #include <pv/view/view.hpp>
50 #include <pv/widgets/exportmenu.hpp>
51 #include <pv/widgets/importmenu.hpp>
52 #ifdef ENABLE_DECODE
53 #include <pv/widgets/decodermenu.hpp>
54 #endif
55
56 #include <libsigrokcxx/libsigrokcxx.hpp>
57
58 using std::back_inserter;
59 using std::cerr;
60 using std::copy;
61 using std::endl;
62 using std::list;
63 using std::map;
64 using std::max;
65 using std::min;
66 using std::shared_ptr;
67 using std::string;
68 using std::vector;
69
70 using sigrok::Capability;
71 using sigrok::ConfigKey;
72 using sigrok::Error;
73 using sigrok::InputFormat;
74 using sigrok::OutputFormat;
75
76 using boost::algorithm::join;
77
78 namespace pv {
79 namespace toolbars {
80
81 const uint64_t MainBar::MinSampleCount = 100ULL;
82 const uint64_t MainBar::MaxSampleCount = 1000000000000ULL;
83 const uint64_t MainBar::DefaultSampleCount = 1000000;
84
85 const char *MainBar::SettingOpenDirectory = "MainWindow/OpenDirectory";
86 const char *MainBar::SettingSaveDirectory = "MainWindow/SaveDirectory";
87
88 MainBar::MainBar(Session &session, QWidget *parent,
89                 pv::views::TraceView::View *view) :
90         StandardBar(session, parent, view, false),
91         action_new_view_(new QAction(this)),
92         action_open_(new QAction(this)),
93         action_save_as_(new QAction(this)),
94         action_save_selection_as_(new QAction(this)),
95         action_connect_(new QAction(this)),
96         open_button_(new QToolButton()),
97         save_button_(new QToolButton()),
98         device_selector_(parent, session.device_manager(),
99                 action_connect_),
100         configure_button_(this),
101         configure_button_action_(nullptr),
102         channels_button_(this),
103         channels_button_action_(nullptr),
104         sample_count_(" samples", this),
105         sample_rate_("Hz", this),
106         updating_sample_rate_(false),
107         updating_sample_count_(false),
108         sample_count_supported_(false)
109 #ifdef ENABLE_DECODE
110         , add_decoder_button_(new QToolButton()),
111         menu_decoders_add_(new pv::widgets::DecoderMenu(this, true))
112 #endif
113 {
114         setObjectName(QString::fromUtf8("MainBar"));
115
116         // Actions
117         action_new_view_->setText(tr("New &View"));
118         action_new_view_->setIcon(QIcon::fromTheme("window-new",
119                 QIcon(":/icons/window-new.png")));
120         connect(action_new_view_, SIGNAL(triggered(bool)),
121                 this, SLOT(on_actionNewView_triggered()));
122
123         action_open_->setText(tr("&Open..."));
124         action_open_->setIcon(QIcon::fromTheme("document-open",
125                 QIcon(":/icons/document-open.png")));
126         action_open_->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_O));
127         connect(action_open_, SIGNAL(triggered(bool)),
128                 this, SLOT(on_actionOpen_triggered()));
129
130         action_save_as_->setText(tr("&Save As..."));
131         action_save_as_->setIcon(QIcon::fromTheme("document-save-as",
132                 QIcon(":/icons/document-save-as.png")));
133         action_save_as_->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_S));
134         connect(action_save_as_, SIGNAL(triggered(bool)),
135                 this, SLOT(on_actionSaveAs_triggered()));
136
137         action_save_selection_as_->setText(tr("Save Selected &Range As..."));
138         action_save_selection_as_->setIcon(QIcon::fromTheme("document-save-as",
139                 QIcon(":/icons/document-save-as.png")));
140         action_save_selection_as_->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_R));
141         connect(action_save_selection_as_, SIGNAL(triggered(bool)),
142                 this, SLOT(on_actionSaveSelectionAs_triggered()));
143
144         widgets::ExportMenu *menu_file_export = new widgets::ExportMenu(this,
145                 session.device_manager().context());
146         menu_file_export->setTitle(tr("&Export"));
147         connect(menu_file_export,
148                 SIGNAL(format_selected(std::shared_ptr<sigrok::OutputFormat>)),
149                 this, SLOT(export_file(std::shared_ptr<sigrok::OutputFormat>)));
150
151         widgets::ImportMenu *menu_file_import = new widgets::ImportMenu(this,
152                 session.device_manager().context());
153         menu_file_import->setTitle(tr("&Import"));
154         connect(menu_file_import,
155                 SIGNAL(format_selected(std::shared_ptr<sigrok::InputFormat>)),
156                 this, SLOT(import_file(std::shared_ptr<sigrok::InputFormat>)));
157
158         action_connect_->setText(tr("&Connect to Device..."));
159         connect(action_connect_, SIGNAL(triggered(bool)),
160                 this, SLOT(on_actionConnect_triggered()));
161
162         // Open button
163         widgets::ImportMenu *import_menu = new widgets::ImportMenu(this,
164                 session.device_manager().context(), action_open_);
165         connect(import_menu,
166                 SIGNAL(format_selected(std::shared_ptr<sigrok::InputFormat>)),
167                 this,
168                 SLOT(import_file(std::shared_ptr<sigrok::InputFormat>)));
169
170         open_button_->setMenu(import_menu);
171         open_button_->setDefaultAction(action_open_);
172         open_button_->setPopupMode(QToolButton::MenuButtonPopup);
173
174         // Save button
175         vector<QAction *> open_actions;
176         open_actions.push_back(action_save_as_);
177         open_actions.push_back(action_save_selection_as_);
178
179         widgets::ExportMenu *export_menu = new widgets::ExportMenu(this,
180                 session.device_manager().context(),
181                 open_actions);
182         connect(export_menu,
183                 SIGNAL(format_selected(std::shared_ptr<sigrok::OutputFormat>)),
184                 this,
185                 SLOT(export_file(std::shared_ptr<sigrok::OutputFormat>)));
186
187         save_button_->setMenu(export_menu);
188         save_button_->setDefaultAction(action_save_as_);
189         save_button_->setPopupMode(QToolButton::MenuButtonPopup);
190
191         // Device selector menu
192         connect(&device_selector_, SIGNAL(device_selected()),
193                 this, SLOT(on_device_selected()));
194
195         // Setup the decoder button
196 #ifdef ENABLE_DECODE
197         menu_decoders_add_->setTitle(tr("&Add"));
198         connect(menu_decoders_add_, SIGNAL(decoder_selected(srd_decoder*)),
199                 this, SLOT(add_decoder(srd_decoder*)));
200
201         add_decoder_button_->setIcon(QIcon::fromTheme("add-decoder",
202                 QIcon(":/icons/add-decoder.svg")));
203         add_decoder_button_->setPopupMode(QToolButton::InstantPopup);
204         add_decoder_button_->setMenu(menu_decoders_add_);
205 #endif
206
207         connect(&sample_count_, SIGNAL(value_changed()),
208                 this, SLOT(on_sample_count_changed()));
209         connect(&sample_rate_, SIGNAL(value_changed()),
210                 this, SLOT(on_sample_rate_changed()));
211
212         sample_count_.show_min_max_step(0, UINT64_MAX, 1);
213
214         set_capture_state(pv::Session::Stopped);
215
216         configure_button_.setToolTip(tr("Configure Device"));
217         configure_button_.setIcon(QIcon::fromTheme("configure",
218                 QIcon(":/icons/configure.png")));
219
220         channels_button_.setToolTip(tr("Configure Channels"));
221         channels_button_.setIcon(QIcon::fromTheme("channels",
222                 QIcon(":/icons/channels.svg")));
223
224         add_toolbar_widgets();
225
226         sample_count_.installEventFilter(this);
227         sample_rate_.installEventFilter(this);
228
229         // Setup session_ events
230         connect(&session_, SIGNAL(capture_state_changed(int)),
231                 this, SLOT(on_capture_state_changed(int)));
232         connect(&session, SIGNAL(device_changed()),
233                 this, SLOT(on_device_changed()));
234
235         update_device_list();
236 }
237
238 void MainBar::update_device_list()
239 {
240         DeviceManager &mgr = session_.device_manager();
241         shared_ptr<devices::Device> selected_device = session_.device();
242         list< shared_ptr<devices::Device> > devs;
243
244         copy(mgr.devices().begin(), mgr.devices().end(), back_inserter(devs));
245
246         if (std::find(devs.begin(), devs.end(), selected_device) == devs.end())
247                 devs.push_back(selected_device);
248
249         device_selector_.set_device_list(devs, selected_device);
250         update_device_config_widgets();
251 }
252
253
254 void MainBar::set_capture_state(pv::Session::capture_state state)
255 {
256         bool ui_enabled = (state == pv::Session::Stopped) ? true : false;
257
258         device_selector_.setEnabled(ui_enabled);
259         configure_button_.setEnabled(ui_enabled);
260         channels_button_.setEnabled(ui_enabled);
261         sample_count_.setEnabled(ui_enabled);
262         sample_rate_.setEnabled(ui_enabled);
263 }
264
265 void MainBar::reset_device_selector()
266 {
267         device_selector_.reset();
268 }
269
270 QAction* MainBar::action_open() const
271 {
272         return action_open_;
273 }
274
275 QAction* MainBar::action_save_as() const
276 {
277         return action_save_as_;
278 }
279
280 QAction* MainBar::action_save_selection_as() const
281 {
282         return action_save_selection_as_;
283 }
284
285 QAction* MainBar::action_connect() const
286 {
287         return action_connect_;
288 }
289
290 void MainBar::update_sample_rate_selector()
291 {
292         Glib::VariantContainerBase gvar_dict;
293         GVariant *gvar_list;
294         const uint64_t *elements = nullptr;
295         gsize num_elements;
296         map< const ConfigKey*, std::set<Capability> > keys;
297
298         if (updating_sample_rate_) {
299                 sample_rate_.show_none();
300                 return;
301         }
302
303         const shared_ptr<devices::Device> device =
304                 device_selector_.selected_device();
305         if (!device)
306                 return;
307
308         assert(!updating_sample_rate_);
309         updating_sample_rate_ = true;
310
311         const shared_ptr<sigrok::Device> sr_dev = device->device();
312
313         if (sr_dev->config_check(ConfigKey::SAMPLERATE, Capability::LIST)) {
314                 gvar_dict = sr_dev->config_list(ConfigKey::SAMPLERATE);
315         } else {
316                 sample_rate_.show_none();
317                 updating_sample_rate_ = false;
318                 return;
319         }
320
321         if ((gvar_list = g_variant_lookup_value(gvar_dict.gobj(),
322                         "samplerate-steps", G_VARIANT_TYPE("at")))) {
323                 elements = (const uint64_t *)g_variant_get_fixed_array(
324                                 gvar_list, &num_elements, sizeof(uint64_t));
325
326                 const uint64_t min = elements[0];
327                 const uint64_t max = elements[1];
328                 const uint64_t step = elements[2];
329
330                 g_variant_unref(gvar_list);
331
332                 assert(min > 0);
333                 assert(max > 0);
334                 assert(max > min);
335                 assert(step > 0);
336
337                 if (step == 1)
338                         sample_rate_.show_125_list(min, max);
339                 else {
340                         // When the step is not 1, we cam't make a 1-2-5-10
341                         // list of sample rates, because we may not be able to
342                         // make round numbers. Therefore in this case, show a
343                         // spin box.
344                         sample_rate_.show_min_max_step(min, max, step);
345                 }
346         } else if ((gvar_list = g_variant_lookup_value(gvar_dict.gobj(),
347                         "samplerates", G_VARIANT_TYPE("at")))) {
348                 elements = (const uint64_t *)g_variant_get_fixed_array(
349                                 gvar_list, &num_elements, sizeof(uint64_t));
350                 sample_rate_.show_list(elements, num_elements);
351                 g_variant_unref(gvar_list);
352         }
353         updating_sample_rate_ = false;
354
355         update_sample_rate_selector_value();
356 }
357
358 void MainBar::update_sample_rate_selector_value()
359 {
360         if (updating_sample_rate_)
361                 return;
362
363         const shared_ptr<devices::Device> device =
364                 device_selector_.selected_device();
365         if (!device)
366                 return;
367
368         try {
369                 auto gvar = device->device()->config_get(ConfigKey::SAMPLERATE);
370                 uint64_t samplerate =
371                         Glib::VariantBase::cast_dynamic<Glib::Variant<guint64>>(gvar).get();
372                 assert(!updating_sample_rate_);
373                 updating_sample_rate_ = true;
374                 sample_rate_.set_value(samplerate);
375                 updating_sample_rate_ = false;
376         } catch (Error error) {
377                 qDebug() << "WARNING: Failed to get value of sample rate";
378                 return;
379         }
380 }
381
382 void MainBar::update_sample_count_selector()
383 {
384         if (updating_sample_count_)
385                 return;
386
387         const shared_ptr<devices::Device> device =
388                 device_selector_.selected_device();
389         if (!device)
390                 return;
391
392         const shared_ptr<sigrok::Device> sr_dev = device->device();
393
394         assert(!updating_sample_count_);
395         updating_sample_count_ = true;
396
397         if (!sample_count_supported_) {
398                 sample_count_.show_none();
399                 updating_sample_count_ = false;
400                 return;
401         }
402
403         uint64_t sample_count = sample_count_.value();
404         uint64_t min_sample_count = 0;
405         uint64_t max_sample_count = MaxSampleCount;
406
407         if (sample_count == 0)
408                 sample_count = DefaultSampleCount;
409
410         if (sr_dev->config_check(ConfigKey::LIMIT_SAMPLES, Capability::LIST)) {
411                 auto gvar = sr_dev->config_list(ConfigKey::LIMIT_SAMPLES);
412                 if (gvar.gobj())
413                         g_variant_get(gvar.gobj(), "(tt)",
414                                 &min_sample_count, &max_sample_count);
415         }
416
417         min_sample_count = min(max(min_sample_count, MinSampleCount),
418                 max_sample_count);
419
420         sample_count_.show_125_list(
421                 min_sample_count, max_sample_count);
422
423         if (sr_dev->config_check(ConfigKey::LIMIT_SAMPLES, Capability::GET)) {
424                 auto gvar = sr_dev->config_get(ConfigKey::LIMIT_SAMPLES);
425                 sample_count = g_variant_get_uint64(gvar.gobj());
426                 if (sample_count == 0)
427                         sample_count = DefaultSampleCount;
428                 sample_count = min(max(sample_count, MinSampleCount),
429                         max_sample_count);
430         }
431
432         sample_count_.set_value(sample_count);
433
434         updating_sample_count_ = false;
435 }
436
437 void MainBar::update_device_config_widgets()
438 {
439         using namespace pv::popups;
440
441         const shared_ptr<devices::Device> device =
442                 device_selector_.selected_device();
443
444         // Hide the widgets if no device is selected
445         channels_button_action_->setVisible(!!device);
446         if (!device) {
447                 configure_button_action_->setVisible(false);
448                 sample_count_.show_none();
449                 sample_rate_.show_none();
450                 return;
451         }
452
453         const shared_ptr<sigrok::Device> sr_dev = device->device();
454         if (!sr_dev)
455                 return;
456
457         // Update the configure popup
458         DeviceOptions *const opts = new DeviceOptions(sr_dev, this);
459         configure_button_action_->setVisible(
460                 !opts->binding().properties().empty());
461         configure_button_.set_popup(opts);
462
463         // Update the channels popup
464         Channels *const channels = new Channels(session_, this);
465         channels_button_.set_popup(channels);
466
467         // Update supported options.
468         sample_count_supported_ = false;
469
470         if (sr_dev->config_check(ConfigKey::LIMIT_SAMPLES, Capability::SET))
471                 sample_count_supported_ = true;
472
473         if (sr_dev->config_check(ConfigKey::LIMIT_FRAMES, Capability::SET)) {
474                 sr_dev->config_set(ConfigKey::LIMIT_FRAMES,
475                         Glib::Variant<guint64>::create(1));
476                         on_config_changed();
477         }
478
479         // Add notification of reconfigure events
480         disconnect(this, SLOT(on_config_changed()));
481         connect(&opts->binding(), SIGNAL(config_changed()),
482                 this, SLOT(on_config_changed()));
483
484         // Update sweep timing widgets.
485         update_sample_count_selector();
486         update_sample_rate_selector();
487 }
488
489 void MainBar::commit_sample_rate()
490 {
491         uint64_t sample_rate = 0;
492
493         const shared_ptr<devices::Device> device =
494                 device_selector_.selected_device();
495         if (!device)
496                 return;
497
498         const shared_ptr<sigrok::Device> sr_dev = device->device();
499
500         sample_rate = sample_rate_.value();
501         if (sample_rate == 0)
502                 return;
503
504         try {
505                 sr_dev->config_set(ConfigKey::SAMPLERATE,
506                         Glib::Variant<guint64>::create(sample_rate));
507                 update_sample_rate_selector();
508         } catch (Error error) {
509                 qDebug() << "Failed to configure samplerate.";
510                 return;
511         }
512
513         // Devices with built-in memory might impose limits on certain
514         // configurations, so let's check what sample count the driver
515         // lets us use now.
516         update_sample_count_selector();
517 }
518
519 void MainBar::commit_sample_count()
520 {
521         uint64_t sample_count = 0;
522
523         const shared_ptr<devices::Device> device =
524                 device_selector_.selected_device();
525         if (!device)
526                 return;
527
528         const shared_ptr<sigrok::Device> sr_dev = device->device();
529
530         sample_count = sample_count_.value();
531         if (sample_count_supported_) {
532                 try {
533                         sr_dev->config_set(ConfigKey::LIMIT_SAMPLES,
534                                 Glib::Variant<guint64>::create(sample_count));
535                         update_sample_count_selector();
536                 } catch (Error error) {
537                         qDebug() << "Failed to configure sample count.";
538                         return;
539                 }
540         }
541
542         // Devices with built-in memory might impose limits on certain
543         // configurations, so let's check what sample rate the driver
544         // lets us use now.
545         update_sample_rate_selector();
546 }
547
548 void MainBar::session_error(const QString text, const QString info_text)
549 {
550         QMetaObject::invokeMethod(this, "show_session_error",
551                 Qt::QueuedConnection, Q_ARG(QString, text),
552                 Q_ARG(QString, info_text));
553 }
554
555 void MainBar::show_session_error(const QString text, const QString info_text)
556 {
557         QMessageBox msg(this);
558         msg.setText(text);
559         msg.setInformativeText(info_text);
560         msg.setStandardButtons(QMessageBox::Ok);
561         msg.setIcon(QMessageBox::Warning);
562         msg.exec();
563 }
564
565 void MainBar::add_decoder(srd_decoder *decoder)
566 {
567 #ifdef ENABLE_DECODE
568         assert(decoder);
569         session_.add_decoder(decoder);
570 #else
571         (void)decoder;
572 #endif
573 }
574
575 void MainBar::export_file(shared_ptr<OutputFormat> format,
576         bool selection_only)
577 {
578         using pv::dialogs::StoreProgress;
579
580         // Stop any currently running capture session
581         session_.stop_capture();
582
583         QSettings settings;
584         const QString dir = settings.value(SettingSaveDirectory).toString();
585
586         std::pair<uint64_t, uint64_t> sample_range;
587
588         // Selection only? Verify that the cursors are active and fetch their values
589         if (selection_only) {
590                 views::TraceView::View *trace_view =
591                         qobject_cast<views::TraceView::View*>(session_.main_view().get());
592
593                 if (!trace_view->cursors()->enabled()) {
594                         show_session_error(tr("Missing Cursors"), tr("You need to set the " \
595                                         "cursors before you can save the data enclosed by them " \
596                                         "to a session file (e.g. using ALT-V - Show Cursors)."));
597                         return;
598                 }
599
600                 const double samplerate = session_.get_samplerate();
601
602                 const pv::util::Timestamp& start_time = trace_view->cursors()->first()->time();
603                 const pv::util::Timestamp& end_time = trace_view->cursors()->second()->time();
604
605                 const uint64_t start_sample =
606                         std::max((double)0, start_time.convert_to<double>() * samplerate);
607                 const uint64_t end_sample = end_time.convert_to<double>() * samplerate;
608
609                 sample_range = std::make_pair(start_sample, end_sample);
610         } else {
611                 sample_range = std::make_pair(0, 0);
612         }
613
614         // Construct the filter
615         const vector<string> exts = format->extensions();
616         QString filter = tr("%1 files ").arg(
617                 QString::fromStdString(format->description()));
618
619         if (exts.empty())
620                 filter += "(*.*)";
621         else
622                 filter += QString("(*.%1);;%2 (*.*)").arg(
623                         QString::fromStdString(join(exts, ", *.")),
624                         tr("All Files"));
625
626         // Show the file dialog
627         const QString file_name = QFileDialog::getSaveFileName(
628                 this, tr("Save File"), dir, filter);
629
630         if (file_name.isEmpty())
631                 return;
632
633         const QString abs_path = QFileInfo(file_name).absolutePath();
634         settings.setValue(SettingSaveDirectory, abs_path);
635
636         // Show the options dialog
637         map<string, Glib::VariantBase> options;
638         if (!format->options().empty()) {
639                 dialogs::InputOutputOptions dlg(
640                         tr("Export %1").arg(QString::fromStdString(
641                                 format->description())),
642                         format->options(), this);
643                 if (!dlg.exec())
644                         return;
645                 options = dlg.options();
646         }
647
648         if (!selection_only)
649                 session_.set_name(QFileInfo(file_name).fileName());
650
651         StoreProgress *dlg = new StoreProgress(file_name, format, options,
652                 sample_range, session_, this);
653         dlg->run();
654 }
655
656 void MainBar::import_file(shared_ptr<InputFormat> format)
657 {
658         assert(format);
659
660         QSettings settings;
661         const QString dir = settings.value(SettingOpenDirectory).toString();
662
663         // Construct the filter
664         const vector<string> exts = format->extensions();
665         const QString filter = exts.empty() ? "" :
666                 tr("%1 files (*.%2)").arg(
667                         QString::fromStdString(format->description()),
668                         QString::fromStdString(join(exts, ", *.")));
669
670         // Show the file dialog
671         const QString file_name = QFileDialog::getOpenFileName(
672                 this, tr("Import File"), dir, tr(
673                         "%1 files (*.*);;All Files (*.*)").arg(
674                         QString::fromStdString(format->description())));
675
676         if (file_name.isEmpty())
677                 return;
678
679         // Show the options dialog
680         map<string, Glib::VariantBase> options;
681         if (!format->options().empty()) {
682                 dialogs::InputOutputOptions dlg(
683                         tr("Import %1").arg(QString::fromStdString(
684                                 format->description())),
685                         format->options(), this);
686                 if (!dlg.exec())
687                         return;
688                 options = dlg.options();
689         }
690
691         session_.load_file(file_name, format, options);
692
693         const QString abs_path = QFileInfo(file_name).absolutePath();
694         settings.setValue(SettingOpenDirectory, abs_path);
695 }
696
697 void MainBar::on_device_selected()
698 {
699         shared_ptr<devices::Device> device = device_selector_.selected_device();
700         if (!device) {
701                 reset_device_selector();
702                 return;
703         }
704
705         session_.select_device(device);
706 }
707
708 void MainBar::on_device_changed()
709 {
710         update_device_list();
711         update_device_config_widgets();
712 }
713
714 void MainBar::on_capture_state_changed(int state)
715 {
716         set_capture_state((pv::Session::capture_state)state);
717 }
718
719 void MainBar::on_sample_count_changed()
720 {
721         if (!updating_sample_count_)
722                 commit_sample_count();
723 }
724
725 void MainBar::on_sample_rate_changed()
726 {
727         if (!updating_sample_rate_)
728                 commit_sample_rate();
729 }
730
731 void MainBar::on_config_changed()
732 {
733         commit_sample_count();
734         commit_sample_rate();   
735 }
736
737 void MainBar::on_actionNewView_triggered()
738 {
739         new_view(&session_);
740 }
741
742 void MainBar::on_actionOpen_triggered()
743 {
744         QSettings settings;
745         const QString dir = settings.value(SettingOpenDirectory).toString();
746
747         // Show the dialog
748         const QString file_name = QFileDialog::getOpenFileName(
749                 this, tr("Open File"), dir, tr(
750                         "Sigrok Sessions (*.sr);;"
751                         "All Files (*.*)"));
752
753         if (!file_name.isEmpty()) {
754                 session_.load_file(file_name);
755
756                 const QString abs_path = QFileInfo(file_name).absolutePath();
757                 settings.setValue(SettingOpenDirectory, abs_path);
758         }
759 }
760
761 void MainBar::on_actionSaveAs_triggered()
762 {
763         export_file(session_.device_manager().context()->output_formats()["srzip"]);
764 }
765
766 void MainBar::on_actionSaveSelectionAs_triggered()
767 {
768         export_file(session_.device_manager().context()->output_formats()["srzip"], true);
769 }
770
771 void MainBar::on_actionConnect_triggered()
772 {
773         // Stop any currently running capture session
774         session_.stop_capture();
775
776         dialogs::Connect dlg(this, session_.device_manager());
777
778         // If the user selected a device, select it in the device list. Select the
779         // current device otherwise.
780         if (dlg.exec())
781                 session_.select_device(dlg.get_selected_device());
782
783         update_device_list();
784 }
785
786 void MainBar::add_toolbar_widgets()
787 {
788         addAction(action_new_view_);
789         addSeparator();
790         addWidget(open_button_);
791         addWidget(save_button_);
792         addSeparator();
793
794         StandardBar::add_toolbar_widgets();
795
796         addWidget(&device_selector_);
797         configure_button_action_ = addWidget(&configure_button_);
798         channels_button_action_ = addWidget(&channels_button_);
799         addWidget(&sample_count_);
800         addWidget(&sample_rate_);
801 #ifdef ENABLE_DECODE
802         addSeparator();
803         addWidget(add_decoder_button_);
804 #endif
805 }
806
807 bool MainBar::eventFilter(QObject *watched, QEvent *event)
808 {
809         if (sample_count_supported_ && (watched == &sample_count_ ||
810                         watched == &sample_rate_) &&
811                         (event->type() == QEvent::ToolTip)) {
812                 auto sec = pv::util::Timestamp(sample_count_.value()) / sample_rate_.value();
813                 QHelpEvent *help_event = static_cast<QHelpEvent*>(event);
814
815                 QString str = tr("Total sampling time: %1").arg(
816                         pv::util::format_time_si(sec, pv::util::SIPrefix::unspecified, 0, "s", false));
817                 QToolTip::showText(help_event->globalPos(), str);
818
819                 return true;
820         }
821
822         return false;
823 }
824
825 } // namespace toolbars
826 } // namespace pv