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Fix #928 by catching errors if config_list() fails
[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/data/decodesignal.hpp>
39 #include <pv/devicemanager.hpp>
40 #include <pv/devices/hardwaredevice.hpp>
41 #include <pv/devices/inputfile.hpp>
42 #include <pv/devices/sessionfile.hpp>
43 #include <pv/dialogs/connect.hpp>
44 #include <pv/dialogs/inputoutputoptions.hpp>
45 #include <pv/dialogs/storeprogress.hpp>
46 #include <pv/mainwindow.hpp>
47 #include <pv/popups/channels.hpp>
48 #include <pv/popups/deviceoptions.hpp>
49 #include <pv/util.hpp>
50 #include <pv/views/trace/view.hpp>
51 #include <pv/widgets/exportmenu.hpp>
52 #include <pv/widgets/importmenu.hpp>
53 #ifdef ENABLE_DECODE
54 #include <pv/widgets/decodermenu.hpp>
55 #endif
56
57 #include <libsigrokcxx/libsigrokcxx.hpp>
58
59 using std::back_inserter;
60 using std::copy;
61 using std::list;
62 using std::make_pair;
63 using std::map;
64 using std::max;
65 using std::min;
66 using std::pair;
67 using std::set;
68 using std::shared_ptr;
69 using std::string;
70 using std::vector;
71
72 using sigrok::Capability;
73 using sigrok::ConfigKey;
74 using sigrok::Error;
75 using sigrok::InputFormat;
76 using sigrok::OutputFormat;
77
78 using boost::algorithm::join;
79
80 namespace pv {
81 namespace toolbars {
82
83 const uint64_t MainBar::MinSampleCount = 100ULL;
84 const uint64_t MainBar::MaxSampleCount = 1000000000000ULL;
85 const uint64_t MainBar::DefaultSampleCount = 1000000;
86
87 const char *MainBar::SettingOpenDirectory = "MainWindow/OpenDirectory";
88 const char *MainBar::SettingSaveDirectory = "MainWindow/SaveDirectory";
89
90 MainBar::MainBar(Session &session, QWidget *parent,
91                 pv::views::trace::View *view) :
92         StandardBar(session, parent, view, false),
93         action_new_view_(new QAction(this)),
94         action_open_(new QAction(this)),
95         action_save_as_(new QAction(this)),
96         action_save_selection_as_(new QAction(this)),
97         action_connect_(new QAction(this)),
98         open_button_(new QToolButton()),
99         save_button_(new QToolButton()),
100         device_selector_(parent, session.device_manager(),
101                 action_connect_),
102         configure_button_(this),
103         configure_button_action_(nullptr),
104         channels_button_(this),
105         channels_button_action_(nullptr),
106         sample_count_(" samples", this),
107         sample_rate_("Hz", this),
108         updating_sample_rate_(false),
109         updating_sample_count_(false),
110         sample_count_supported_(false)
111 #ifdef ENABLE_DECODE
112         , add_decoder_button_(new QToolButton()),
113         menu_decoders_add_(new pv::widgets::DecoderMenu(this, true))
114 #endif
115 {
116         setObjectName(QString::fromUtf8("MainBar"));
117
118         setContextMenuPolicy(Qt::PreventContextMenu);
119
120         // Actions
121         action_new_view_->setText(tr("New &View"));
122         action_new_view_->setIcon(QIcon::fromTheme("window-new",
123                 QIcon(":/icons/window-new.png")));
124         connect(action_new_view_, SIGNAL(triggered(bool)),
125                 this, SLOT(on_actionNewView_triggered()));
126
127         action_open_->setText(tr("&Open..."));
128         action_open_->setIcon(QIcon::fromTheme("document-open",
129                 QIcon(":/icons/document-open.png")));
130         action_open_->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_O));
131         connect(action_open_, SIGNAL(triggered(bool)),
132                 this, SLOT(on_actionOpen_triggered()));
133
134         action_save_as_->setText(tr("&Save As..."));
135         action_save_as_->setIcon(QIcon::fromTheme("document-save-as",
136                 QIcon(":/icons/document-save-as.png")));
137         action_save_as_->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_S));
138         connect(action_save_as_, SIGNAL(triggered(bool)),
139                 this, SLOT(on_actionSaveAs_triggered()));
140
141         action_save_selection_as_->setText(tr("Save Selected &Range As..."));
142         action_save_selection_as_->setIcon(QIcon::fromTheme("document-save-as",
143                 QIcon(":/icons/document-save-as.png")));
144         action_save_selection_as_->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_R));
145         connect(action_save_selection_as_, SIGNAL(triggered(bool)),
146                 this, SLOT(on_actionSaveSelectionAs_triggered()));
147
148         widgets::ExportMenu *menu_file_export = new widgets::ExportMenu(this,
149                 session.device_manager().context());
150         menu_file_export->setTitle(tr("&Export"));
151         connect(menu_file_export,
152                 SIGNAL(format_selected(shared_ptr<sigrok::OutputFormat>)),
153                 this, SLOT(export_file(shared_ptr<sigrok::OutputFormat>)));
154
155         widgets::ImportMenu *menu_file_import = new widgets::ImportMenu(this,
156                 session.device_manager().context());
157         menu_file_import->setTitle(tr("&Import"));
158         connect(menu_file_import,
159                 SIGNAL(format_selected(shared_ptr<sigrok::InputFormat>)),
160                 this, SLOT(import_file(shared_ptr<sigrok::InputFormat>)));
161
162         action_connect_->setText(tr("&Connect to Device..."));
163         connect(action_connect_, SIGNAL(triggered(bool)),
164                 this, SLOT(on_actionConnect_triggered()));
165
166         // Open button
167         widgets::ImportMenu *import_menu = new widgets::ImportMenu(this,
168                 session.device_manager().context(), action_open_);
169         connect(import_menu,
170                 SIGNAL(format_selected(shared_ptr<sigrok::InputFormat>)),
171                 this,
172                 SLOT(import_file(shared_ptr<sigrok::InputFormat>)));
173
174         open_button_->setMenu(import_menu);
175         open_button_->setDefaultAction(action_open_);
176         open_button_->setPopupMode(QToolButton::MenuButtonPopup);
177
178         // Save button
179         vector<QAction *> open_actions;
180         open_actions.push_back(action_save_as_);
181         open_actions.push_back(action_save_selection_as_);
182
183         widgets::ExportMenu *export_menu = new widgets::ExportMenu(this,
184                 session.device_manager().context(),
185                 open_actions);
186         connect(export_menu,
187                 SIGNAL(format_selected(shared_ptr<sigrok::OutputFormat>)),
188                 this,
189                 SLOT(export_file(shared_ptr<sigrok::OutputFormat>)));
190
191         save_button_->setMenu(export_menu);
192         save_button_->setDefaultAction(action_save_as_);
193         save_button_->setPopupMode(QToolButton::MenuButtonPopup);
194
195         // Device selector menu
196         connect(&device_selector_, SIGNAL(device_selected()),
197                 this, SLOT(on_device_selected()));
198
199         // Setup the decoder button
200 #ifdef ENABLE_DECODE
201         menu_decoders_add_->setTitle(tr("&Add"));
202         connect(menu_decoders_add_, SIGNAL(decoder_selected(srd_decoder*)),
203                 this, SLOT(add_decoder(srd_decoder*)));
204
205         add_decoder_button_->setIcon(QIcon(":/icons/add-decoder.svg"));
206         add_decoder_button_->setPopupMode(QToolButton::InstantPopup);
207         add_decoder_button_->setMenu(menu_decoders_add_);
208         add_decoder_button_->setToolTip(tr("Add low-level, non-stacked protocol decoder"));
209 #endif
210
211         connect(&sample_count_, SIGNAL(value_changed()),
212                 this, SLOT(on_sample_count_changed()));
213         connect(&sample_rate_, SIGNAL(value_changed()),
214                 this, SLOT(on_sample_rate_changed()));
215
216         sample_count_.show_min_max_step(0, UINT64_MAX, 1);
217
218         set_capture_state(pv::Session::Stopped);
219
220         configure_button_.setToolTip(tr("Configure Device"));
221         configure_button_.setIcon(QIcon::fromTheme("preferences-system",
222                 QIcon(":/icons/preferences-system.png")));
223
224         channels_button_.setToolTip(tr("Configure Channels"));
225         channels_button_.setIcon(QIcon(":/icons/channels.svg"));
226
227         add_toolbar_widgets();
228
229         sample_count_.installEventFilter(this);
230         sample_rate_.installEventFilter(this);
231
232         // Setup session_ events
233         connect(&session_, SIGNAL(capture_state_changed(int)),
234                 this, SLOT(on_capture_state_changed(int)));
235         connect(&session, SIGNAL(device_changed()),
236                 this, SLOT(on_device_changed()));
237
238         update_device_list();
239 }
240
241 void MainBar::update_device_list()
242 {
243         DeviceManager &mgr = session_.device_manager();
244         shared_ptr<devices::Device> selected_device = session_.device();
245         list< shared_ptr<devices::Device> > devs;
246
247         copy(mgr.devices().begin(), mgr.devices().end(), back_inserter(devs));
248
249         if (std::find(devs.begin(), devs.end(), selected_device) == devs.end())
250                 devs.push_back(selected_device);
251
252         device_selector_.set_device_list(devs, selected_device);
253         update_device_config_widgets();
254 }
255
256 void MainBar::set_capture_state(pv::Session::capture_state state)
257 {
258         bool ui_enabled = (state == pv::Session::Stopped) ? true : false;
259
260         device_selector_.setEnabled(ui_enabled);
261         configure_button_.setEnabled(ui_enabled);
262         channels_button_.setEnabled(ui_enabled);
263         sample_count_.setEnabled(ui_enabled);
264         sample_rate_.setEnabled(ui_enabled);
265 }
266
267 void MainBar::reset_device_selector()
268 {
269         device_selector_.reset();
270 }
271
272 QAction* MainBar::action_open() const
273 {
274         return action_open_;
275 }
276
277 QAction* MainBar::action_save_as() const
278 {
279         return action_save_as_;
280 }
281
282 QAction* MainBar::action_save_selection_as() const
283 {
284         return action_save_selection_as_;
285 }
286
287 QAction* MainBar::action_connect() const
288 {
289         return action_connect_;
290 }
291
292 void MainBar::update_sample_rate_selector()
293 {
294         Glib::VariantContainerBase gvar_dict;
295         GVariant *gvar_list;
296         const uint64_t *elements = nullptr;
297         gsize num_elements;
298         map< const ConfigKey*, set<Capability> > keys;
299
300         if (updating_sample_rate_) {
301                 sample_rate_.show_none();
302                 return;
303         }
304
305         const shared_ptr<devices::Device> device =
306                 device_selector_.selected_device();
307         if (!device)
308                 return;
309
310         assert(!updating_sample_rate_);
311         updating_sample_rate_ = true;
312
313         const shared_ptr<sigrok::Device> sr_dev = device->device();
314
315         if (sr_dev->config_check(ConfigKey::SAMPLERATE, Capability::LIST)) {
316                 try {
317                         gvar_dict = sr_dev->config_list(ConfigKey::SAMPLERATE);
318                 } catch (Error error) {
319                         qDebug() << tr("Failed to get sample rate list:") << error.what();
320                 }
321         } else {
322                 sample_rate_.show_none();
323                 updating_sample_rate_ = false;
324                 return;
325         }
326
327         if ((gvar_list = g_variant_lookup_value(gvar_dict.gobj(),
328                         "samplerate-steps", G_VARIANT_TYPE("at")))) {
329                 elements = (const uint64_t *)g_variant_get_fixed_array(
330                                 gvar_list, &num_elements, sizeof(uint64_t));
331
332                 const uint64_t min = elements[0];
333                 const uint64_t max = elements[1];
334                 const uint64_t step = elements[2];
335
336                 g_variant_unref(gvar_list);
337
338                 assert(min > 0);
339                 assert(max > 0);
340                 assert(max > min);
341                 assert(step > 0);
342
343                 if (step == 1)
344                         sample_rate_.show_125_list(min, max);
345                 else {
346                         // When the step is not 1, we cam't make a 1-2-5-10
347                         // list of sample rates, because we may not be able to
348                         // make round numbers. Therefore in this case, show a
349                         // spin box.
350                         sample_rate_.show_min_max_step(min, max, step);
351                 }
352         } else if ((gvar_list = g_variant_lookup_value(gvar_dict.gobj(),
353                         "samplerates", G_VARIANT_TYPE("at")))) {
354                 elements = (const uint64_t *)g_variant_get_fixed_array(
355                                 gvar_list, &num_elements, sizeof(uint64_t));
356                 sample_rate_.show_list(elements, num_elements);
357                 g_variant_unref(gvar_list);
358         }
359         updating_sample_rate_ = false;
360
361         update_sample_rate_selector_value();
362 }
363
364 void MainBar::update_sample_rate_selector_value()
365 {
366         if (updating_sample_rate_)
367                 return;
368
369         const shared_ptr<devices::Device> device =
370                 device_selector_.selected_device();
371         if (!device)
372                 return;
373
374         try {
375                 auto gvar = device->device()->config_get(ConfigKey::SAMPLERATE);
376                 uint64_t samplerate =
377                         Glib::VariantBase::cast_dynamic<Glib::Variant<guint64>>(gvar).get();
378                 assert(!updating_sample_rate_);
379                 updating_sample_rate_ = true;
380                 sample_rate_.set_value(samplerate);
381                 updating_sample_rate_ = false;
382         } catch (Error error) {
383                 qDebug() << "WARNING: Failed to get value of sample rate";
384                 return;
385         }
386 }
387
388 void MainBar::update_sample_count_selector()
389 {
390         if (updating_sample_count_)
391                 return;
392
393         const shared_ptr<devices::Device> device =
394                 device_selector_.selected_device();
395         if (!device)
396                 return;
397
398         const shared_ptr<sigrok::Device> sr_dev = device->device();
399
400         assert(!updating_sample_count_);
401         updating_sample_count_ = true;
402
403         if (!sample_count_supported_) {
404                 sample_count_.show_none();
405                 updating_sample_count_ = false;
406                 return;
407         }
408
409         uint64_t sample_count = sample_count_.value();
410         uint64_t min_sample_count = 0;
411         uint64_t max_sample_count = MaxSampleCount;
412         bool default_count_set = false;
413
414         if (sample_count == 0) {
415                 sample_count = DefaultSampleCount;
416                 default_count_set = true;
417         }
418
419         if (sr_dev->config_check(ConfigKey::LIMIT_SAMPLES, Capability::LIST)) {
420                 try {
421                         auto gvar = sr_dev->config_list(ConfigKey::LIMIT_SAMPLES);
422                         if (gvar.gobj())
423                                 g_variant_get(gvar.gobj(), "(tt)",
424                                         &min_sample_count, &max_sample_count);
425                 } catch (Error error) {
426                         qDebug() << tr("Failed to get sample limit list:") << error.what();
427                 }
428         }
429
430         min_sample_count = min(max(min_sample_count, MinSampleCount),
431                 max_sample_count);
432
433         sample_count_.show_125_list(min_sample_count, max_sample_count);
434
435         if (sr_dev->config_check(ConfigKey::LIMIT_SAMPLES, Capability::GET)) {
436                 auto gvar = sr_dev->config_get(ConfigKey::LIMIT_SAMPLES);
437                 sample_count = g_variant_get_uint64(gvar.gobj());
438                 if (sample_count == 0) {
439                         sample_count = DefaultSampleCount;
440                         default_count_set = true;
441                 }
442                 sample_count = min(max(sample_count, MinSampleCount),
443                         max_sample_count);
444         }
445
446         sample_count_.set_value(sample_count);
447
448         updating_sample_count_ = false;
449
450         // If we show the default rate then make sure the device uses the same
451         if (default_count_set)
452                 commit_sample_count();
453 }
454
455 void MainBar::update_device_config_widgets()
456 {
457         using namespace pv::popups;
458
459         const shared_ptr<devices::Device> device =
460                 device_selector_.selected_device();
461
462         // Hide the widgets if no device is selected
463         channels_button_action_->setVisible(!!device);
464         if (!device) {
465                 configure_button_action_->setVisible(false);
466                 sample_count_.show_none();
467                 sample_rate_.show_none();
468                 return;
469         }
470
471         const shared_ptr<sigrok::Device> sr_dev = device->device();
472         if (!sr_dev)
473                 return;
474
475         // Update the configure popup
476         DeviceOptions *const opts = new DeviceOptions(sr_dev, this);
477         configure_button_action_->setVisible(
478                 !opts->binding().properties().empty());
479         configure_button_.set_popup(opts);
480
481         // Update the channels popup
482         Channels *const channels = new Channels(session_, this);
483         channels_button_.set_popup(channels);
484
485         // Update supported options.
486         sample_count_supported_ = false;
487
488         if (sr_dev->config_check(ConfigKey::LIMIT_SAMPLES, Capability::SET))
489                 sample_count_supported_ = true;
490
491         // Add notification of reconfigure events
492         disconnect(this, SLOT(on_config_changed()));
493         connect(&opts->binding(), SIGNAL(config_changed()),
494                 this, SLOT(on_config_changed()));
495
496         // Update sweep timing widgets.
497         update_sample_count_selector();
498         update_sample_rate_selector();
499 }
500
501 void MainBar::commit_sample_rate()
502 {
503         uint64_t sample_rate = 0;
504
505         const shared_ptr<devices::Device> device =
506                 device_selector_.selected_device();
507         if (!device)
508                 return;
509
510         const shared_ptr<sigrok::Device> sr_dev = device->device();
511
512         sample_rate = sample_rate_.value();
513         if (sample_rate == 0)
514                 return;
515
516         try {
517                 sr_dev->config_set(ConfigKey::SAMPLERATE,
518                         Glib::Variant<guint64>::create(sample_rate));
519                 update_sample_rate_selector();
520         } catch (Error error) {
521                 qDebug() << "Failed to configure samplerate.";
522                 return;
523         }
524
525         // Devices with built-in memory might impose limits on certain
526         // configurations, so let's check what sample count the driver
527         // lets us use now.
528         update_sample_count_selector();
529 }
530
531 void MainBar::commit_sample_count()
532 {
533         uint64_t sample_count = 0;
534
535         const shared_ptr<devices::Device> device =
536                 device_selector_.selected_device();
537         if (!device)
538                 return;
539
540         const shared_ptr<sigrok::Device> sr_dev = device->device();
541
542         sample_count = sample_count_.value();
543         if (sample_count_supported_) {
544                 try {
545                         sr_dev->config_set(ConfigKey::LIMIT_SAMPLES,
546                                 Glib::Variant<guint64>::create(sample_count));
547                         update_sample_count_selector();
548                 } catch (Error error) {
549                         qDebug() << "Failed to configure sample count.";
550                         return;
551                 }
552         }
553
554         // Devices with built-in memory might impose limits on certain
555         // configurations, so let's check what sample rate the driver
556         // lets us use now.
557         update_sample_rate_selector();
558 }
559
560 void MainBar::session_error(const QString text, const QString info_text)
561 {
562         QMetaObject::invokeMethod(this, "show_session_error",
563                 Qt::QueuedConnection, Q_ARG(QString, text),
564                 Q_ARG(QString, info_text));
565 }
566
567 void MainBar::show_session_error(const QString text, const QString info_text)
568 {
569         QMessageBox msg(this);
570         msg.setText(text);
571         msg.setInformativeText(info_text);
572         msg.setStandardButtons(QMessageBox::Ok);
573         msg.setIcon(QMessageBox::Warning);
574         msg.exec();
575 }
576
577 void MainBar::add_decoder(srd_decoder *decoder)
578 {
579 #ifdef ENABLE_DECODE
580         assert(decoder);
581         shared_ptr<data::DecodeSignal> signal = session_.add_decode_signal();
582         if (signal)
583                 signal->stack_decoder(decoder);
584 #else
585         (void)decoder;
586 #endif
587 }
588
589 void MainBar::export_file(shared_ptr<OutputFormat> format, bool selection_only)
590 {
591         using pv::dialogs::StoreProgress;
592
593         // Stop any currently running capture session
594         session_.stop_capture();
595
596         QSettings settings;
597         const QString dir = settings.value(SettingSaveDirectory).toString();
598
599         pair<uint64_t, uint64_t> sample_range;
600
601         // Selection only? Verify that the cursors are active and fetch their values
602         if (selection_only) {
603                 views::trace::View *trace_view =
604                         qobject_cast<views::trace::View*>(session_.main_view().get());
605
606                 if (!trace_view->cursors()->enabled()) {
607                         show_session_error(tr("Missing Cursors"), tr("You need to set the " \
608                                         "cursors before you can save the data enclosed by them " \
609                                         "to a session file (e.g. using the Show Cursors button)."));
610                         return;
611                 }
612
613                 const double samplerate = session_.get_samplerate();
614
615                 const pv::util::Timestamp& start_time = trace_view->cursors()->first()->time();
616                 const pv::util::Timestamp& end_time = trace_view->cursors()->second()->time();
617
618                 const uint64_t start_sample = (uint64_t)max(
619                         (double)0, start_time.convert_to<double>() * samplerate);
620                 const uint64_t end_sample = (uint64_t)max(
621                         (double)0, end_time.convert_to<double>() * samplerate);
622
623                 if ((start_sample == 0) && (end_sample == 0)) {
624                         // Both cursors are negative and were clamped to 0
625                         show_session_error(tr("Invalid Range"), tr("The cursors don't " \
626                                         "define a valid range of samples."));
627                         return;
628                 }
629
630                 sample_range = make_pair(start_sample, end_sample);
631         } else {
632                 sample_range = make_pair(0, 0);
633         }
634
635         // Construct the filter
636         const vector<string> exts = format->extensions();
637         QString filter = tr("%1 files ").arg(
638                 QString::fromStdString(format->description()));
639
640         if (exts.empty())
641                 filter += "(*)";
642         else
643                 filter += QString("(*.%1);;%2 (*)").arg(
644                         QString::fromStdString(join(exts, ", *.")),
645                         tr("All Files"));
646
647         // Show the file dialog
648         const QString file_name = QFileDialog::getSaveFileName(
649                 this, tr("Save File"), dir, filter);
650
651         if (file_name.isEmpty())
652                 return;
653
654         const QString abs_path = QFileInfo(file_name).absolutePath();
655         settings.setValue(SettingSaveDirectory, abs_path);
656
657         // Show the options dialog
658         map<string, Glib::VariantBase> options;
659         if (!format->options().empty()) {
660                 dialogs::InputOutputOptions dlg(
661                         tr("Export %1").arg(QString::fromStdString(
662                                 format->description())),
663                         format->options(), this);
664                 if (!dlg.exec())
665                         return;
666                 options = dlg.options();
667         }
668
669         if (!selection_only)
670                 session_.set_name(QFileInfo(file_name).fileName());
671
672         StoreProgress *dlg = new StoreProgress(file_name, format, options,
673                 sample_range, session_, this);
674         dlg->run();
675 }
676
677 void MainBar::import_file(shared_ptr<InputFormat> format)
678 {
679         assert(format);
680
681         QSettings settings;
682         const QString dir = settings.value(SettingOpenDirectory).toString();
683
684         // Construct the filter
685         const vector<string> exts = format->extensions();
686         const QString filter_exts = exts.empty() ? "" : QString::fromStdString("%1 (%2)").arg(
687                 tr("%1 files").arg(QString::fromStdString(format->description())),
688                 QString::fromStdString("*.%1").arg(QString::fromStdString(join(exts, " *."))));
689         const QString filter_all = QString::fromStdString("%1 (%2)").arg(
690                 tr("All Files"), QString::fromStdString("*"));
691         const QString filter = QString::fromStdString("%1%2%3").arg(
692                 exts.empty() ? "" : filter_exts,
693                 exts.empty() ? "" : ";;",
694                 filter_all);
695
696         // Show the file dialog
697         const QString file_name = QFileDialog::getOpenFileName(
698                 this, tr("Import File"), dir, filter);
699
700         if (file_name.isEmpty())
701                 return;
702
703         // Show the options dialog
704         map<string, Glib::VariantBase> options;
705         if (!format->options().empty()) {
706                 dialogs::InputOutputOptions dlg(
707                         tr("Import %1").arg(QString::fromStdString(
708                                 format->description())),
709                         format->options(), this);
710                 if (!dlg.exec())
711                         return;
712                 options = dlg.options();
713         }
714
715         session_.load_file(file_name, format, options);
716
717         const QString abs_path = QFileInfo(file_name).absolutePath();
718         settings.setValue(SettingOpenDirectory, abs_path);
719 }
720
721 void MainBar::on_device_selected()
722 {
723         shared_ptr<devices::Device> device = device_selector_.selected_device();
724         if (!device) {
725                 reset_device_selector();
726                 return;
727         }
728
729         session_.select_device(device);
730 }
731
732 void MainBar::on_device_changed()
733 {
734         update_device_list();
735         update_device_config_widgets();
736 }
737
738 void MainBar::on_capture_state_changed(int state)
739 {
740         set_capture_state((pv::Session::capture_state)state);
741 }
742
743 void MainBar::on_sample_count_changed()
744 {
745         if (!updating_sample_count_)
746                 commit_sample_count();
747 }
748
749 void MainBar::on_sample_rate_changed()
750 {
751         if (!updating_sample_rate_)
752                 commit_sample_rate();
753 }
754
755 void MainBar::on_config_changed()
756 {
757         commit_sample_count();
758         commit_sample_rate();
759 }
760
761 void MainBar::on_actionNewView_triggered()
762 {
763         new_view(&session_);
764 }
765
766 void MainBar::on_actionOpen_triggered()
767 {
768         QSettings settings;
769         const QString dir = settings.value(SettingOpenDirectory).toString();
770
771         // Show the dialog
772         const QString file_name = QFileDialog::getOpenFileName(
773                 this, tr("Open File"), dir, tr(
774                         "sigrok Sessions (*.sr);;"
775                         "All Files (*)"));
776
777         if (!file_name.isEmpty()) {
778                 session_.load_file(file_name);
779
780                 const QString abs_path = QFileInfo(file_name).absolutePath();
781                 settings.setValue(SettingOpenDirectory, abs_path);
782         }
783 }
784
785 void MainBar::on_actionSaveAs_triggered()
786 {
787         export_file(session_.device_manager().context()->output_formats()["srzip"]);
788 }
789
790 void MainBar::on_actionSaveSelectionAs_triggered()
791 {
792         export_file(session_.device_manager().context()->output_formats()["srzip"], true);
793 }
794
795 void MainBar::on_actionConnect_triggered()
796 {
797         // Stop any currently running capture session
798         session_.stop_capture();
799
800         dialogs::Connect dlg(this, session_.device_manager());
801
802         // If the user selected a device, select it in the device list. Select the
803         // current device otherwise.
804         if (dlg.exec())
805                 session_.select_device(dlg.get_selected_device());
806
807         update_device_list();
808 }
809
810 void MainBar::add_toolbar_widgets()
811 {
812         addAction(action_new_view_);
813         addSeparator();
814         addWidget(open_button_);
815         addWidget(save_button_);
816         addSeparator();
817
818         StandardBar::add_toolbar_widgets();
819
820         addWidget(&device_selector_);
821         configure_button_action_ = addWidget(&configure_button_);
822         channels_button_action_ = addWidget(&channels_button_);
823         addWidget(&sample_count_);
824         addWidget(&sample_rate_);
825 #ifdef ENABLE_DECODE
826         addSeparator();
827         addWidget(add_decoder_button_);
828 #endif
829 }
830
831 bool MainBar::eventFilter(QObject *watched, QEvent *event)
832 {
833         if (sample_count_supported_ && (watched == &sample_count_ ||
834                         watched == &sample_rate_) &&
835                         (event->type() == QEvent::ToolTip)) {
836                 auto sec = pv::util::Timestamp(sample_count_.value()) / sample_rate_.value();
837                 QHelpEvent *help_event = static_cast<QHelpEvent*>(event);
838
839                 QString str = tr("Total sampling time: %1").arg(
840                         pv::util::format_time_si(sec, pv::util::SIPrefix::unspecified, 0, "s", false));
841                 QToolTip::showText(help_event->globalPos(), str);
842
843                 return true;
844         }
845
846         return false;
847 }
848
849 } // namespace toolbars
850 } // namespace pv