1 #include "midi_mapping_dialog.h"
4 #include <google/protobuf/descriptor.h>
5 #include <google/protobuf/message.h>
7 #include <QDialogButtonBox>
10 #include <QPushButton>
12 #include <QStringList>
13 #include <QTreeWidget>
21 #include "shared/controller_spin_box.h"
22 #include "midi_mapper.h"
23 #include "nageru_midi_mapping.pb.h"
24 #include "shared/midi_mapper_util.h"
25 #include "shared/post_to_main_thread.h"
26 #include "ui_midi_mapping.h"
30 using namespace google::protobuf;
33 vector<MIDIMappingDialog::Control> per_bus_controllers = {
34 { "Stereo width", MIDIMappingBusProto::kStereoWidthFieldNumber,
35 MIDIMappingProto::kStereoWidthBankFieldNumber },
36 { "Treble", MIDIMappingBusProto::kTrebleFieldNumber, MIDIMappingProto::kTrebleBankFieldNumber },
37 { "Mid", MIDIMappingBusProto::kMidFieldNumber, MIDIMappingProto::kMidBankFieldNumber },
38 { "Bass", MIDIMappingBusProto::kBassFieldNumber, MIDIMappingProto::kBassBankFieldNumber },
39 { "Gain", MIDIMappingBusProto::kGainFieldNumber, MIDIMappingProto::kGainBankFieldNumber },
40 { "Compressor threshold", MIDIMappingBusProto::kCompressorThresholdFieldNumber,
41 MIDIMappingProto::kCompressorThresholdBankFieldNumber},
42 { "Fader", MIDIMappingBusProto::kFaderFieldNumber, MIDIMappingProto::kFaderBankFieldNumber }
44 vector<MIDIMappingDialog::Control> per_bus_buttons = {
45 { "Toggle mute", MIDIMappingBusProto::kToggleMuteFieldNumber,
46 MIDIMappingProto::kToggleMuteBankFieldNumber },
47 { "Toggle locut", MIDIMappingBusProto::kToggleLocutFieldNumber,
48 MIDIMappingProto::kToggleLocutBankFieldNumber },
49 { "Togle auto gain staging", MIDIMappingBusProto::kToggleAutoGainStagingFieldNumber,
50 MIDIMappingProto::kToggleAutoGainStagingBankFieldNumber },
51 { "Togle compressor", MIDIMappingBusProto::kToggleCompressorFieldNumber,
52 MIDIMappingProto::kToggleCompressorBankFieldNumber },
53 { "Clear peak", MIDIMappingBusProto::kClearPeakFieldNumber,
54 MIDIMappingProto::kClearPeakBankFieldNumber }
56 vector<MIDIMappingDialog::Control> per_bus_lights = {
57 { "Is muted", MIDIMappingBusProto::kIsMutedFieldNumber, 0 },
58 { "Locut is on", MIDIMappingBusProto::kLocutIsOnFieldNumber, 0 },
59 { "Auto gain staging is on", MIDIMappingBusProto::kAutoGainStagingIsOnFieldNumber, 0 },
60 { "Compressor is on", MIDIMappingBusProto::kCompressorIsOnFieldNumber, 0 },
61 { "Bus has peaked", MIDIMappingBusProto::kHasPeakedFieldNumber, 0 }
63 vector<MIDIMappingDialog::Control> global_controllers = {
64 { "Locut cutoff", MIDIMappingBusProto::kLocutFieldNumber, MIDIMappingProto::kLocutBankFieldNumber },
65 { "Limiter threshold", MIDIMappingBusProto::kLimiterThresholdFieldNumber,
66 MIDIMappingProto::kLimiterThresholdBankFieldNumber },
67 { "Makeup gain", MIDIMappingBusProto::kMakeupGainFieldNumber,
68 MIDIMappingProto::kMakeupGainBankFieldNumber }
70 vector<MIDIMappingDialog::Control> global_buttons = {
71 { "Previous bank", MIDIMappingBusProto::kPrevBankFieldNumber, 0 },
72 { "Next bank", MIDIMappingBusProto::kNextBankFieldNumber, 0 },
73 { "Select bank 1", MIDIMappingBusProto::kSelectBank1FieldNumber, 0 },
74 { "Select bank 2", MIDIMappingBusProto::kSelectBank2FieldNumber, 0 },
75 { "Select bank 3", MIDIMappingBusProto::kSelectBank3FieldNumber, 0 },
76 { "Select bank 4", MIDIMappingBusProto::kSelectBank4FieldNumber, 0 },
77 { "Select bank 5", MIDIMappingBusProto::kSelectBank5FieldNumber, 0 },
78 { "Toggle limiter", MIDIMappingBusProto::kToggleLimiterFieldNumber, MIDIMappingProto::kToggleLimiterBankFieldNumber },
79 { "Toggle auto makeup gain", MIDIMappingBusProto::kToggleAutoMakeupGainFieldNumber, MIDIMappingProto::kToggleAutoMakeupGainBankFieldNumber }
81 vector<MIDIMappingDialog::Control> global_lights = {
82 { "Bank 1 is selected", MIDIMappingBusProto::kBank1IsSelectedFieldNumber, 0 },
83 { "Bank 2 is selected", MIDIMappingBusProto::kBank2IsSelectedFieldNumber, 0 },
84 { "Bank 3 is selected", MIDIMappingBusProto::kBank3IsSelectedFieldNumber, 0 },
85 { "Bank 4 is selected", MIDIMappingBusProto::kBank4IsSelectedFieldNumber, 0 },
86 { "Bank 5 is selected", MIDIMappingBusProto::kBank5IsSelectedFieldNumber, 0 },
87 { "Limiter is on", MIDIMappingBusProto::kLimiterIsOnFieldNumber, 0 },
88 { "Auto makeup gain is on", MIDIMappingBusProto::kAutoMakeupGainIsOnFieldNumber, 0 },
93 int get_bank(const MIDIMappingProto &mapping_proto, int bank_field_number, int default_value)
95 const FieldDescriptor *bank_descriptor = mapping_proto.GetDescriptor()->FindFieldByNumber(bank_field_number);
96 const Reflection *reflection = mapping_proto.GetReflection();
97 if (!reflection->HasField(mapping_proto, bank_descriptor)) {
100 return reflection->GetInt32(mapping_proto, bank_descriptor);
103 int get_controller_mapping(const MIDIMappingProto &mapping_proto, size_t bus_idx, int field_number, int default_value)
105 if (bus_idx >= size_t(mapping_proto.bus_mapping_size())) {
106 return default_value;
108 const MIDIMappingBusProto &bus_mapping = mapping_proto.bus_mapping(bus_idx);
109 return get_controller_mapping_helper(bus_mapping, field_number, default_value);
112 int get_button_mapping(const MIDIMappingProto &mapping_proto, size_t bus_idx, int field_number, int default_value)
114 if (bus_idx >= size_t(mapping_proto.bus_mapping_size())) {
115 return default_value;
118 const MIDIMappingBusProto &bus_mapping = mapping_proto.bus_mapping(bus_idx);
119 return get_button_mapping_helper(bus_mapping, field_number, default_value);
122 int get_light_mapping(const MIDIMappingProto &mapping_proto, size_t bus_idx, int field_number, int default_value)
124 if (bus_idx >= size_t(mapping_proto.bus_mapping_size())) {
125 return default_value;
128 const MIDIMappingBusProto &bus_mapping = mapping_proto.bus_mapping(bus_idx);
129 const FieldDescriptor *descriptor = bus_mapping.GetDescriptor()->FindFieldByNumber(field_number);
130 const Reflection *bus_reflection = bus_mapping.GetReflection();
131 if (!bus_reflection->HasField(bus_mapping, descriptor)) {
132 return default_value;
134 const MIDILightProto &bus_proto =
135 static_cast<const MIDILightProto &>(bus_reflection->GetMessage(bus_mapping, descriptor));
136 return bus_proto.note_number();
141 MIDIMappingDialog::MIDIMappingDialog(MIDIMapper *mapper)
142 : ui(new Ui::MIDIMappingDialog),
147 const MIDIMappingProto mapping_proto = mapper->get_current_mapping(); // Take a copy.
148 old_receiver = mapper->set_receiver(this);
152 labels << "Controller bank";
153 for (unsigned bus_idx = 0; bus_idx < num_buses; ++bus_idx) {
155 snprintf(buf, sizeof(buf), "Bus %d", bus_idx + 1);
159 ui->treeWidget->setColumnCount(num_buses + 3);
160 ui->treeWidget->setHeaderLabels(labels);
162 add_controls("Per-bus controllers", ControlType::CONTROLLER, SpinnerGroup::PER_BUS_CONTROLLERS, mapping_proto, per_bus_controllers);
163 add_controls("Per-bus buttons", ControlType::BUTTON, SpinnerGroup::PER_BUS_BUTTONS, mapping_proto, per_bus_buttons);
164 add_controls("Per-bus lights", ControlType::LIGHT, SpinnerGroup::PER_BUS_LIGHTS, mapping_proto, per_bus_lights);
165 add_controls("Global controllers", ControlType::CONTROLLER, SpinnerGroup::GLOBAL_CONTROLLERS, mapping_proto, global_controllers);
166 add_controls("Global buttons", ControlType::BUTTON, SpinnerGroup::GLOBAL_BUTTONS, mapping_proto, global_buttons);
167 add_controls("Global lights", ControlType::LIGHT, SpinnerGroup::GLOBAL_LIGHTS, mapping_proto, global_lights);
168 fill_controls_from_mapping(mapping_proto);
170 // Auto-resize every column but the last.
171 for (unsigned column_idx = 0; column_idx < num_buses + 3; ++column_idx) {
172 ui->treeWidget->resizeColumnToContents(column_idx);
175 connect(ui->guess_bus_button, &QPushButton::clicked,
176 bind(&MIDIMappingDialog::guess_clicked, this, false));
177 connect(ui->guess_group_button, &QPushButton::clicked,
178 bind(&MIDIMappingDialog::guess_clicked, this, true));
179 connect(ui->ok_cancel_buttons, &QDialogButtonBox::accepted, this, &MIDIMappingDialog::ok_clicked);
180 connect(ui->ok_cancel_buttons, &QDialogButtonBox::rejected, this, &MIDIMappingDialog::cancel_clicked);
181 connect(ui->save_button, &QPushButton::clicked, this, &MIDIMappingDialog::save_clicked);
182 connect(ui->load_button, &QPushButton::clicked, this, &MIDIMappingDialog::load_clicked);
184 update_guess_button_state();
187 MIDIMappingDialog::~MIDIMappingDialog()
189 mapper->set_receiver(old_receiver);
190 mapper->refresh_highlights();
193 bool MIDIMappingDialog::eventFilter(QObject *obj, QEvent *event)
195 if (event->type() == QEvent::FocusIn ||
196 event->type() == QEvent::FocusOut) {
197 // We ignore the guess buttons themselves; it should be allowed
198 // to navigate from a spinner to focus on a button (to click it).
199 if (obj != ui->guess_bus_button && obj != ui->guess_group_button) {
200 update_guess_button_state();
206 void MIDIMappingDialog::guess_clicked(bool limit_to_group)
208 FocusInfo focus = find_focus();
209 if (focus.bus_idx == -1) {
210 // The guess button probably took the focus away from us.
213 assert(focus.bus_idx != -1); // The button should have been disabled.
214 pair<int, int> bus_and_offset = guess_offset(focus.bus_idx, limit_to_group ? focus.spinner_group : SpinnerGroup::ALL_GROUPS);
215 const int source_bus_idx = bus_and_offset.first;
216 const int offset = bus_and_offset.second;
217 assert(source_bus_idx != -1); // The button should have been disabled.
219 for (const auto &field_number_and_spinner : spinners[focus.bus_idx]) {
220 int field_number = field_number_and_spinner.first;
221 QSpinBox *spinner = field_number_and_spinner.second.spinner;
222 SpinnerGroup this_spinner_group = field_number_and_spinner.second.group;
224 if (limit_to_group && this_spinner_group != focus.spinner_group) {
228 assert(spinners[source_bus_idx].count(field_number));
229 QSpinBox *source_spinner = spinners[source_bus_idx][field_number].spinner;
230 assert(spinners[source_bus_idx][field_number].group == this_spinner_group);
232 if (source_spinner->value() != -1) {
233 spinner->setValue(source_spinner->value() + offset);
237 // See if we can find a “next” bus to move the focus to.
238 const int next_bus_idx = focus.bus_idx + (focus.bus_idx - source_bus_idx); // Note: Could become e.g. -1.
239 for (const InstantiatedSpinner &is : controller_spinners) {
240 if (int(is.bus_idx) == next_bus_idx && is.field_number == focus.field_number) {
241 is.spinner->setFocus();
244 for (const InstantiatedSpinner &is : button_spinners) {
245 if (int(is.bus_idx) == next_bus_idx && is.field_number == focus.field_number) {
246 is.spinner->setFocus();
249 for (const InstantiatedSpinner &is : light_spinners) {
250 if (int(is.bus_idx) == next_bus_idx && is.field_number == focus.field_number) {
251 is.spinner->setFocus();
256 void MIDIMappingDialog::ok_clicked()
258 unique_ptr<MIDIMappingProto> new_mapping = construct_mapping_proto_from_ui();
259 mapper->set_midi_mapping(*new_mapping);
260 mapper->set_receiver(old_receiver);
264 void MIDIMappingDialog::cancel_clicked()
266 mapper->set_receiver(old_receiver);
270 void MIDIMappingDialog::save_clicked()
273 // The native file dialog uses GTK+, which interferes with CEF's use of the GLib main loop.
274 QFileDialog::Options options(QFileDialog::DontUseNativeDialog);
276 QFileDialog::Options options;
278 unique_ptr<MIDIMappingProto> new_mapping = construct_mapping_proto_from_ui();
279 QString filename = QFileDialog::getSaveFileName(this,
280 "Save MIDI mapping", QString(), tr("Mapping files (*.midimapping)"), /*selectedFilter=*/nullptr, options);
281 if (!filename.endsWith(".midimapping")) {
282 filename += ".midimapping";
284 if (!save_midi_mapping_to_file(*new_mapping, filename.toStdString())) {
286 box.setText("Could not save mapping to '" + filename + "'. Check that you have the right permissions and try again.");
291 void MIDIMappingDialog::load_clicked()
294 // The native file dialog uses GTK+, which interferes with CEF's use of the GLib main loop.
295 QFileDialog::Options options(QFileDialog::DontUseNativeDialog);
297 QFileDialog::Options options;
299 QString filename = QFileDialog::getOpenFileName(this,
300 "Load MIDI mapping", QString(), tr("Mapping files (*.midimapping)"), /*selectedFilter=*/nullptr, options);
301 MIDIMappingProto new_mapping;
302 if (!load_midi_mapping_from_file(filename.toStdString(), &new_mapping)) {
304 box.setText("Could not load mapping from '" + filename + "'. Check that the file exists, has the right permissions and is valid.");
309 fill_controls_from_mapping(new_mapping);
315 T *get_mutable_bus_message(MIDIMappingProto *mapping_proto, unsigned bus_idx, int field_number)
317 while (size_t(mapping_proto->bus_mapping_size()) <= bus_idx) {
318 mapping_proto->add_bus_mapping();
321 MIDIMappingBusProto *bus_mapping = mapping_proto->mutable_bus_mapping(bus_idx);
322 const FieldDescriptor *descriptor = bus_mapping->GetDescriptor()->FindFieldByNumber(field_number);
323 const Reflection *bus_reflection = bus_mapping->GetReflection();
324 return static_cast<T *>(bus_reflection->MutableMessage(bus_mapping, descriptor));
329 unique_ptr<MIDIMappingProto> MIDIMappingDialog::construct_mapping_proto_from_ui()
331 unique_ptr<MIDIMappingProto> mapping_proto(new MIDIMappingProto);
332 for (const InstantiatedSpinner &is : controller_spinners) {
333 const int val = is.spinner->value();
338 MIDIControllerProto *controller_proto =
339 get_mutable_bus_message<MIDIControllerProto>(mapping_proto.get(), is.bus_idx, is.field_number);
340 controller_proto->set_controller_number(val);
342 for (const InstantiatedSpinner &is : button_spinners) {
343 const int val = is.spinner->value();
348 MIDIButtonProto *button_proto =
349 get_mutable_bus_message<MIDIButtonProto>(mapping_proto.get(), is.bus_idx, is.field_number);
350 button_proto->set_note_number(val);
352 for (const InstantiatedSpinner &is : light_spinners) {
353 const int val = is.spinner->value();
358 MIDILightProto *light_proto =
359 get_mutable_bus_message<MIDILightProto>(mapping_proto.get(), is.bus_idx, is.field_number);
360 light_proto->set_note_number(val);
362 int highest_bank_used = 0; // 1-indexed.
363 for (const InstantiatedComboBox &ic : bank_combo_boxes) {
364 const int val = ic.combo_box->currentIndex();
365 highest_bank_used = std::max(highest_bank_used, val);
370 const FieldDescriptor *descriptor = mapping_proto->GetDescriptor()->FindFieldByNumber(ic.field_number);
371 const Reflection *bus_reflection = mapping_proto->GetReflection();
372 bus_reflection->SetInt32(mapping_proto.get(), descriptor, val - 1);
374 mapping_proto->set_num_controller_banks(highest_bank_used);
375 return mapping_proto;
378 void MIDIMappingDialog::add_bank_selector(QTreeWidgetItem *item, const MIDIMappingProto &mapping_proto, int bank_field_number)
380 if (bank_field_number == 0) {
383 QComboBox *bank_selector = new QComboBox(this);
384 bank_selector->addItems(QStringList() << "" << "Bank 1" << "Bank 2" << "Bank 3" << "Bank 4" << "Bank 5");
385 bank_selector->setAutoFillBackground(true);
387 bank_combo_boxes.push_back(InstantiatedComboBox{ bank_selector, bank_field_number });
389 ui->treeWidget->setItemWidget(item, 1, bank_selector);
392 void MIDIMappingDialog::add_controls(const string &heading,
393 MIDIMappingDialog::ControlType control_type,
394 MIDIMappingDialog::SpinnerGroup spinner_group,
395 const MIDIMappingProto &mapping_proto,
396 const vector<MIDIMappingDialog::Control> &controls)
398 QTreeWidgetItem *heading_item = new QTreeWidgetItem(ui->treeWidget);
399 heading_item->setText(0, QString::fromStdString(heading));
400 heading_item->setFirstColumnSpanned(true);
401 heading_item->setExpanded(true);
402 for (const Control &control : controls) {
403 QTreeWidgetItem *item = new QTreeWidgetItem(heading_item);
404 heading_item->addChild(item);
405 add_bank_selector(item, mapping_proto, control.bank_field_number);
406 item->setText(0, QString::fromStdString(control.label + " "));
408 for (unsigned bus_idx = 0; bus_idx < num_buses; ++bus_idx) {
410 if (control_type == ControlType::CONTROLLER) {
411 spinner = new ControllerSpinBox(this);
412 spinner->setRange(-1, 128); // 128 for pitch bend.
414 spinner = new QSpinBox(this);
415 spinner->setRange(-1, 127);
417 spinner->setAutoFillBackground(true);
418 spinner->setSpecialValueText("\u200d"); // Zero-width joiner (ie., empty).
419 spinner->installEventFilter(this); // So we know when the focus changes.
420 ui->treeWidget->setItemWidget(item, bus_idx + 2, spinner);
422 if (control_type == ControlType::CONTROLLER) {
423 controller_spinners.push_back(InstantiatedSpinner{ spinner, bus_idx, spinner_group, control.field_number });
424 } else if (control_type == ControlType::BUTTON) {
425 button_spinners.push_back(InstantiatedSpinner{ spinner, bus_idx, spinner_group, control.field_number });
427 assert(control_type == ControlType::LIGHT);
428 light_spinners.push_back(InstantiatedSpinner{ spinner, bus_idx, spinner_group, control.field_number });
430 spinners[bus_idx][control.field_number] = SpinnerAndGroup{ spinner, spinner_group };
431 connect(spinner, static_cast<void(QSpinBox::*)(int)>(&QSpinBox::valueChanged),
432 bind(&MIDIMappingDialog::update_guess_button_state, this));
435 ui->treeWidget->addTopLevelItem(heading_item);
438 void MIDIMappingDialog::fill_controls_from_mapping(const MIDIMappingProto &mapping_proto)
440 for (const InstantiatedSpinner &is : controller_spinners) {
441 is.spinner->setValue(get_controller_mapping(mapping_proto, is.bus_idx, is.field_number, -1));
443 for (const InstantiatedSpinner &is : button_spinners) {
444 is.spinner->setValue(get_button_mapping(mapping_proto, is.bus_idx, is.field_number, -1));
446 for (const InstantiatedSpinner &is : light_spinners) {
447 is.spinner->setValue(get_light_mapping(mapping_proto, is.bus_idx, is.field_number, -1));
449 for (const InstantiatedComboBox &ic : bank_combo_boxes) {
450 ic.combo_box->setCurrentIndex(get_bank(mapping_proto, ic.field_number, -1) + 1);
454 void MIDIMappingDialog::controller_changed(unsigned controller)
456 post_to_main_thread([=]{
457 for (const InstantiatedSpinner &is : controller_spinners) {
458 if (is.spinner->hasFocus()) {
459 is.spinner->setValue(controller);
460 is.spinner->selectAll();
466 void MIDIMappingDialog::note_on(unsigned note)
468 post_to_main_thread([=]{
469 for (const InstantiatedSpinner &is : button_spinners) {
470 if (is.spinner->hasFocus()) {
471 is.spinner->setValue(note);
472 is.spinner->selectAll();
475 for (const InstantiatedSpinner &is : light_spinners) {
476 if (is.spinner->hasFocus()) {
477 is.spinner->setValue(note);
478 is.spinner->selectAll();
484 pair<int, int> MIDIMappingDialog::guess_offset(unsigned bus_idx, MIDIMappingDialog::SpinnerGroup spinner_group)
486 constexpr pair<int, int> not_found(-1, 0);
488 if (bus_is_empty(bus_idx, spinner_group)) {
492 // See if we can find a non-empty bus to source from (prefer from the left).
493 unsigned source_bus_idx;
494 if (bus_idx > 0 && !bus_is_empty(bus_idx - 1, spinner_group)) {
495 source_bus_idx = bus_idx - 1;
496 } else if (bus_idx < num_buses - 1 && !bus_is_empty(bus_idx + 1, spinner_group)) {
497 source_bus_idx = bus_idx + 1;
502 // See if we can find a consistent offset.
503 bool found_offset = false;
505 int minimum_allowed_offset = numeric_limits<int>::min();
506 int maximum_allowed_offset = numeric_limits<int>::max();
507 for (const auto &field_number_and_spinner : spinners[bus_idx]) {
508 int field_number = field_number_and_spinner.first;
509 QSpinBox *spinner = field_number_and_spinner.second.spinner;
510 SpinnerGroup this_spinner_group = field_number_and_spinner.second.group;
511 assert(spinners[source_bus_idx].count(field_number));
512 QSpinBox *source_spinner = spinners[source_bus_idx][field_number].spinner;
513 assert(spinners[source_bus_idx][field_number].group == this_spinner_group);
515 if (spinner_group != SpinnerGroup::ALL_GROUPS &&
516 spinner_group != this_spinner_group) {
519 if (spinner->value() == -1) {
520 if (source_spinner->value() != -1) {
521 // If the source value is e.g. 3, offset can't be less than -2 or larger than 124.
522 // Otherwise, we'd extrapolate values outside [1..127].
523 minimum_allowed_offset = max(minimum_allowed_offset, 1 - source_spinner->value());
524 maximum_allowed_offset = min(maximum_allowed_offset, 127 - source_spinner->value());
528 if (source_spinner->value() == -1) {
529 // The bus has a controller set that the source bus doesn't set.
532 if (source_spinner->value() == MIDIReceiver::PITCH_BEND_CONTROLLER) {
533 // It's impossible to interpolate across the pitch bend.
537 int candidate_offset = spinner->value() - source_spinner->value();
539 offset = candidate_offset;
541 } else if (candidate_offset != offset) {
547 // Given that the bus wasn't empty, this shouldn't happen.
552 if (offset < minimum_allowed_offset || offset > maximum_allowed_offset) {
555 return make_pair(source_bus_idx, offset);
558 bool MIDIMappingDialog::bus_is_empty(unsigned bus_idx, SpinnerGroup spinner_group)
560 for (const auto &field_number_and_spinner : spinners[bus_idx]) {
561 QSpinBox *spinner = field_number_and_spinner.second.spinner;
562 SpinnerGroup this_spinner_group = field_number_and_spinner.second.group;
563 if (spinner_group != SpinnerGroup::ALL_GROUPS &&
564 spinner_group != this_spinner_group) {
567 if (spinner->value() != -1) {
574 void MIDIMappingDialog::update_guess_button_state()
576 FocusInfo focus = find_focus();
577 if (focus.bus_idx < 0) {
581 pair<int, int> bus_and_offset = guess_offset(focus.bus_idx, SpinnerGroup::ALL_GROUPS);
582 ui->guess_bus_button->setEnabled(bus_and_offset.first != -1);
585 pair<int, int> bus_and_offset = guess_offset(focus.bus_idx, focus.spinner_group);
586 ui->guess_group_button->setEnabled(bus_and_offset.first != -1);
591 MIDIMappingDialog::FocusInfo MIDIMappingDialog::find_focus() const
593 for (const InstantiatedSpinner &is : controller_spinners) {
594 if (is.spinner->hasFocus()) {
595 return FocusInfo{ int(is.bus_idx), is.spinner_group, is.field_number };
598 for (const InstantiatedSpinner &is : button_spinners) {
599 if (is.spinner->hasFocus()) {
600 return FocusInfo{ int(is.bus_idx), is.spinner_group, is.field_number };
603 for (const InstantiatedSpinner &is : light_spinners) {
604 if (is.spinner->hasFocus()) {
605 return FocusInfo{ int(is.bus_idx), is.spinner_group, is.field_number };
608 return FocusInfo{ -1, SpinnerGroup::ALL_GROUPS, -1 };