--- /dev/null
+#include "midi_mapping_dialog.h"
+
+#include <assert.h>
+#include <google/protobuf/descriptor.h>
+#include <google/protobuf/message.h>
+#include <QComboBox>
+#include <QDialogButtonBox>
+#include <QFileDialog>
+#include <QMessageBox>
+#include <QPushButton>
+#include <QSpinBox>
+#include <QStringList>
+#include <QTreeWidget>
+#include <stdio.h>
+#include <algorithm>
+#include <cstddef>
+#include <functional>
+#include <limits>
+#include <string>
+
+#include "midi_mapper.h"
+#include "midi_mapping.pb.h"
+#include "post_to_main_thread.h"
+#include "ui_midi_mapping.h"
+
+class QObject;
+
+using namespace google::protobuf;
+using namespace std;
+
+vector<MIDIMappingDialog::Control> per_bus_controllers = {
+ { "Stereo width", MIDIMappingBusProto::kStereoWidthFieldNumber,
+ MIDIMappingProto::kStereoWidthBankFieldNumber },
+ { "Treble", MIDIMappingBusProto::kTrebleFieldNumber, MIDIMappingProto::kTrebleBankFieldNumber },
+ { "Mid", MIDIMappingBusProto::kMidFieldNumber, MIDIMappingProto::kMidBankFieldNumber },
+ { "Bass", MIDIMappingBusProto::kBassFieldNumber, MIDIMappingProto::kBassBankFieldNumber },
+ { "Gain", MIDIMappingBusProto::kGainFieldNumber, MIDIMappingProto::kGainBankFieldNumber },
+ { "Compressor threshold", MIDIMappingBusProto::kCompressorThresholdFieldNumber,
+ MIDIMappingProto::kCompressorThresholdBankFieldNumber},
+ { "Fader", MIDIMappingBusProto::kFaderFieldNumber, MIDIMappingProto::kFaderBankFieldNumber }
+};
+vector<MIDIMappingDialog::Control> per_bus_buttons = {
+ { "Toggle mute", MIDIMappingBusProto::kToggleMuteFieldNumber,
+ MIDIMappingProto::kToggleMuteBankFieldNumber },
+ { "Toggle locut", MIDIMappingBusProto::kToggleLocutFieldNumber,
+ MIDIMappingProto::kToggleLocutBankFieldNumber },
+ { "Togle auto gain staging", MIDIMappingBusProto::kToggleAutoGainStagingFieldNumber,
+ MIDIMappingProto::kToggleAutoGainStagingBankFieldNumber },
+ { "Togle compressor", MIDIMappingBusProto::kToggleCompressorFieldNumber,
+ MIDIMappingProto::kToggleCompressorBankFieldNumber },
+ { "Clear peak", MIDIMappingBusProto::kClearPeakFieldNumber,
+ MIDIMappingProto::kClearPeakBankFieldNumber }
+};
+vector<MIDIMappingDialog::Control> per_bus_lights = {
+ { "Is muted", MIDIMappingBusProto::kIsMutedFieldNumber, 0 },
+ { "Locut is on", MIDIMappingBusProto::kLocutIsOnFieldNumber, 0 },
+ { "Auto gain staging is on", MIDIMappingBusProto::kAutoGainStagingIsOnFieldNumber, 0 },
+ { "Compressor is on", MIDIMappingBusProto::kCompressorIsOnFieldNumber, 0 },
+ { "Bus has peaked", MIDIMappingBusProto::kHasPeakedFieldNumber, 0 }
+};
+vector<MIDIMappingDialog::Control> global_controllers = {
+ { "Locut cutoff", MIDIMappingBusProto::kLocutFieldNumber, MIDIMappingProto::kLocutBankFieldNumber },
+ { "Limiter threshold", MIDIMappingBusProto::kLimiterThresholdFieldNumber,
+ MIDIMappingProto::kLimiterThresholdBankFieldNumber },
+ { "Makeup gain", MIDIMappingBusProto::kMakeupGainFieldNumber,
+ MIDIMappingProto::kMakeupGainBankFieldNumber }
+};
+vector<MIDIMappingDialog::Control> global_buttons = {
+ { "Previous bank", MIDIMappingBusProto::kPrevBankFieldNumber, 0 },
+ { "Next bank", MIDIMappingBusProto::kNextBankFieldNumber, 0 },
+ { "Select bank 1", MIDIMappingBusProto::kSelectBank1FieldNumber, 0 },
+ { "Select bank 2", MIDIMappingBusProto::kSelectBank2FieldNumber, 0 },
+ { "Select bank 3", MIDIMappingBusProto::kSelectBank3FieldNumber, 0 },
+ { "Select bank 4", MIDIMappingBusProto::kSelectBank4FieldNumber, 0 },
+ { "Select bank 5", MIDIMappingBusProto::kSelectBank5FieldNumber, 0 },
+ { "Toggle limiter", MIDIMappingBusProto::kToggleLimiterFieldNumber, MIDIMappingProto::kToggleLimiterBankFieldNumber },
+ { "Toggle auto makeup gain", MIDIMappingBusProto::kToggleAutoMakeupGainFieldNumber, MIDIMappingProto::kToggleAutoMakeupGainBankFieldNumber }
+};
+vector<MIDIMappingDialog::Control> global_lights = {
+ { "Bank 1 is selected", MIDIMappingBusProto::kBank1IsSelectedFieldNumber, 0 },
+ { "Bank 2 is selected", MIDIMappingBusProto::kBank2IsSelectedFieldNumber, 0 },
+ { "Bank 3 is selected", MIDIMappingBusProto::kBank3IsSelectedFieldNumber, 0 },
+ { "Bank 4 is selected", MIDIMappingBusProto::kBank4IsSelectedFieldNumber, 0 },
+ { "Bank 5 is selected", MIDIMappingBusProto::kBank5IsSelectedFieldNumber, 0 },
+ { "Limiter is on", MIDIMappingBusProto::kLimiterIsOnFieldNumber, 0 },
+ { "Auto makeup gain is on", MIDIMappingBusProto::kAutoMakeupGainIsOnFieldNumber, 0 },
+};
+
+namespace {
+
+int get_bank(const MIDIMappingProto &mapping_proto, int bank_field_number, int default_value)
+{
+ const FieldDescriptor *bank_descriptor = mapping_proto.GetDescriptor()->FindFieldByNumber(bank_field_number);
+ const Reflection *reflection = mapping_proto.GetReflection();
+ if (!reflection->HasField(mapping_proto, bank_descriptor)) {
+ return default_value;
+ }
+ return reflection->GetInt32(mapping_proto, bank_descriptor);
+}
+
+int get_controller_mapping(const MIDIMappingProto &mapping_proto, size_t bus_idx, int field_number, int default_value)
+{
+ if (bus_idx >= size_t(mapping_proto.bus_mapping_size())) {
+ return default_value;
+ }
+
+ const MIDIMappingBusProto &bus_mapping = mapping_proto.bus_mapping(bus_idx);
+ const FieldDescriptor *descriptor = bus_mapping.GetDescriptor()->FindFieldByNumber(field_number);
+ const Reflection *bus_reflection = bus_mapping.GetReflection();
+ if (!bus_reflection->HasField(bus_mapping, descriptor)) {
+ return default_value;
+ }
+ const MIDIControllerProto &controller_proto =
+ static_cast<const MIDIControllerProto &>(bus_reflection->GetMessage(bus_mapping, descriptor));
+ return controller_proto.controller_number();
+}
+
+int get_button_mapping(const MIDIMappingProto &mapping_proto, size_t bus_idx, int field_number, int default_value)
+{
+ if (bus_idx >= size_t(mapping_proto.bus_mapping_size())) {
+ return default_value;
+ }
+
+ const MIDIMappingBusProto &bus_mapping = mapping_proto.bus_mapping(bus_idx);
+ const FieldDescriptor *descriptor = bus_mapping.GetDescriptor()->FindFieldByNumber(field_number);
+ const Reflection *bus_reflection = bus_mapping.GetReflection();
+ if (!bus_reflection->HasField(bus_mapping, descriptor)) {
+ return default_value;
+ }
+ const MIDIButtonProto &bus_proto =
+ static_cast<const MIDIButtonProto &>(bus_reflection->GetMessage(bus_mapping, descriptor));
+ return bus_proto.note_number();
+}
+
+int get_light_mapping(const MIDIMappingProto &mapping_proto, size_t bus_idx, int field_number, int default_value)
+{
+ if (bus_idx >= size_t(mapping_proto.bus_mapping_size())) {
+ return default_value;
+ }
+
+ const MIDIMappingBusProto &bus_mapping = mapping_proto.bus_mapping(bus_idx);
+ const FieldDescriptor *descriptor = bus_mapping.GetDescriptor()->FindFieldByNumber(field_number);
+ const Reflection *bus_reflection = bus_mapping.GetReflection();
+ if (!bus_reflection->HasField(bus_mapping, descriptor)) {
+ return default_value;
+ }
+ const MIDILightProto &bus_proto =
+ static_cast<const MIDILightProto &>(bus_reflection->GetMessage(bus_mapping, descriptor));
+ return bus_proto.note_number();
+}
+
+} // namespace
+
+MIDIMappingDialog::MIDIMappingDialog(MIDIMapper *mapper)
+ : ui(new Ui::MIDIMappingDialog),
+ mapper(mapper)
+{
+ ui->setupUi(this);
+
+ const MIDIMappingProto mapping_proto = mapper->get_current_mapping(); // Take a copy.
+ old_receiver = mapper->set_receiver(this);
+
+ QStringList labels;
+ labels << "";
+ labels << "Controller bank";
+ for (unsigned bus_idx = 0; bus_idx < num_buses; ++bus_idx) {
+ char buf[256];
+ snprintf(buf, sizeof(buf), "Bus %d", bus_idx + 1);
+ labels << buf;
+ }
+ labels << "";
+ ui->treeWidget->setColumnCount(num_buses + 3);
+ ui->treeWidget->setHeaderLabels(labels);
+
+ add_controls("Per-bus controllers", ControlType::CONTROLLER, SpinnerGroup::PER_BUS_CONTROLLERS, mapping_proto, per_bus_controllers);
+ add_controls("Per-bus buttons", ControlType::BUTTON, SpinnerGroup::PER_BUS_BUTTONS, mapping_proto, per_bus_buttons);
+ add_controls("Per-bus lights", ControlType::LIGHT, SpinnerGroup::PER_BUS_LIGHTS, mapping_proto, per_bus_lights);
+ add_controls("Global controllers", ControlType::CONTROLLER, SpinnerGroup::GLOBAL_CONTROLLERS, mapping_proto, global_controllers);
+ add_controls("Global buttons", ControlType::BUTTON, SpinnerGroup::GLOBAL_BUTTONS, mapping_proto, global_buttons);
+ add_controls("Global lights", ControlType::LIGHT, SpinnerGroup::GLOBAL_LIGHTS, mapping_proto, global_lights);
+ fill_controls_from_mapping(mapping_proto);
+
+ // Auto-resize every column but the last.
+ for (unsigned column_idx = 0; column_idx < num_buses + 3; ++column_idx) {
+ ui->treeWidget->resizeColumnToContents(column_idx);
+ }
+
+ connect(ui->guess_bus_button, &QPushButton::clicked,
+ bind(&MIDIMappingDialog::guess_clicked, this, false));
+ connect(ui->guess_group_button, &QPushButton::clicked,
+ bind(&MIDIMappingDialog::guess_clicked, this, true));
+ connect(ui->ok_cancel_buttons, &QDialogButtonBox::accepted, this, &MIDIMappingDialog::ok_clicked);
+ connect(ui->ok_cancel_buttons, &QDialogButtonBox::rejected, this, &MIDIMappingDialog::cancel_clicked);
+ connect(ui->save_button, &QPushButton::clicked, this, &MIDIMappingDialog::save_clicked);
+ connect(ui->load_button, &QPushButton::clicked, this, &MIDIMappingDialog::load_clicked);
+
+ update_guess_button_state();
+}
+
+MIDIMappingDialog::~MIDIMappingDialog()
+{
+ mapper->set_receiver(old_receiver);
+ mapper->refresh_highlights();
+}
+
+bool MIDIMappingDialog::eventFilter(QObject *obj, QEvent *event)
+{
+ if (event->type() == QEvent::FocusIn ||
+ event->type() == QEvent::FocusOut) {
+ // We ignore the guess buttons themselves; it should be allowed
+ // to navigate from a spinner to focus on a button (to click it).
+ if (obj != ui->guess_bus_button && obj != ui->guess_group_button) {
+ update_guess_button_state();
+ }
+ }
+ return false;
+}
+
+void MIDIMappingDialog::guess_clicked(bool limit_to_group)
+{
+ FocusInfo focus = find_focus();
+ if (focus.bus_idx == -1) {
+ // The guess button probably took the focus away from us.
+ focus = last_focus;
+ }
+ assert(focus.bus_idx != -1); // The button should have been disabled.
+ pair<int, int> bus_and_offset = guess_offset(focus.bus_idx, limit_to_group ? focus.spinner_group : SpinnerGroup::ALL_GROUPS);
+ const int source_bus_idx = bus_and_offset.first;
+ const int offset = bus_and_offset.second;
+ assert(source_bus_idx != -1); // The button should have been disabled.
+
+ for (const auto &field_number_and_spinner : spinners[focus.bus_idx]) {
+ int field_number = field_number_and_spinner.first;
+ QSpinBox *spinner = field_number_and_spinner.second.spinner;
+ SpinnerGroup this_spinner_group = field_number_and_spinner.second.group;
+
+ if (limit_to_group && this_spinner_group != focus.spinner_group) {
+ continue;
+ }
+
+ assert(spinners[source_bus_idx].count(field_number));
+ QSpinBox *source_spinner = spinners[source_bus_idx][field_number].spinner;
+ assert(spinners[source_bus_idx][field_number].group == this_spinner_group);
+
+ if (source_spinner->value() != -1) {
+ spinner->setValue(source_spinner->value() + offset);
+ }
+ }
+
+ // See if we can find a “next” bus to move the focus to.
+ const int next_bus_idx = focus.bus_idx + (focus.bus_idx - source_bus_idx); // Note: Could become e.g. -1.
+ for (const InstantiatedSpinner &is : controller_spinners) {
+ if (int(is.bus_idx) == next_bus_idx && is.field_number == focus.field_number) {
+ is.spinner->setFocus();
+ }
+ }
+ for (const InstantiatedSpinner &is : button_spinners) {
+ if (int(is.bus_idx) == next_bus_idx && is.field_number == focus.field_number) {
+ is.spinner->setFocus();
+ }
+ }
+ for (const InstantiatedSpinner &is : light_spinners) {
+ if (int(is.bus_idx) == next_bus_idx && is.field_number == focus.field_number) {
+ is.spinner->setFocus();
+ }
+ }
+}
+
+void MIDIMappingDialog::ok_clicked()
+{
+ unique_ptr<MIDIMappingProto> new_mapping = construct_mapping_proto_from_ui();
+ mapper->set_midi_mapping(*new_mapping);
+ mapper->set_receiver(old_receiver);
+ accept();
+}
+
+void MIDIMappingDialog::cancel_clicked()
+{
+ mapper->set_receiver(old_receiver);
+ reject();
+}
+
+void MIDIMappingDialog::save_clicked()
+{
+#if HAVE_CEF
+ // The native file dialog uses GTK+, which interferes with CEF's use of the GLib main loop.
+ QFileDialog::Options options(QFileDialog::DontUseNativeDialog);
+#else
+ QFileDialog::Options options;
+#endif
+ unique_ptr<MIDIMappingProto> new_mapping = construct_mapping_proto_from_ui();
+ QString filename = QFileDialog::getSaveFileName(this,
+ "Save MIDI mapping", QString(), tr("Mapping files (*.midimapping)"), /*selectedFilter=*/nullptr, options);
+ if (!filename.endsWith(".midimapping")) {
+ filename += ".midimapping";
+ }
+ if (!save_midi_mapping_to_file(*new_mapping, filename.toStdString())) {
+ QMessageBox box;
+ box.setText("Could not save mapping to '" + filename + "'. Check that you have the right permissions and try again.");
+ box.exec();
+ }
+}
+
+void MIDIMappingDialog::load_clicked()
+{
+#if HAVE_CEF
+ // The native file dialog uses GTK+, which interferes with CEF's use of the GLib main loop.
+ QFileDialog::Options options(QFileDialog::DontUseNativeDialog);
+#else
+ QFileDialog::Options options;
+#endif
+ QString filename = QFileDialog::getOpenFileName(this,
+ "Load MIDI mapping", QString(), tr("Mapping files (*.midimapping)"), /*selectedFilter=*/nullptr, options);
+ MIDIMappingProto new_mapping;
+ if (!load_midi_mapping_from_file(filename.toStdString(), &new_mapping)) {
+ QMessageBox box;
+ box.setText("Could not load mapping from '" + filename + "'. Check that the file exists, has the right permissions and is valid.");
+ box.exec();
+ return;
+ }
+
+ fill_controls_from_mapping(new_mapping);
+}
+
+namespace {
+
+template<class T>
+T *get_mutable_bus_message(MIDIMappingProto *mapping_proto, unsigned bus_idx, int field_number)
+{
+ while (size_t(mapping_proto->bus_mapping_size()) <= bus_idx) {
+ mapping_proto->add_bus_mapping();
+ }
+
+ MIDIMappingBusProto *bus_mapping = mapping_proto->mutable_bus_mapping(bus_idx);
+ const FieldDescriptor *descriptor = bus_mapping->GetDescriptor()->FindFieldByNumber(field_number);
+ const Reflection *bus_reflection = bus_mapping->GetReflection();
+ return static_cast<T *>(bus_reflection->MutableMessage(bus_mapping, descriptor));
+}
+
+} // namespace
+
+unique_ptr<MIDIMappingProto> MIDIMappingDialog::construct_mapping_proto_from_ui()
+{
+ unique_ptr<MIDIMappingProto> mapping_proto(new MIDIMappingProto);
+ for (const InstantiatedSpinner &is : controller_spinners) {
+ const int val = is.spinner->value();
+ if (val == -1) {
+ continue;
+ }
+
+ MIDIControllerProto *controller_proto =
+ get_mutable_bus_message<MIDIControllerProto>(mapping_proto.get(), is.bus_idx, is.field_number);
+ controller_proto->set_controller_number(val);
+ }
+ for (const InstantiatedSpinner &is : button_spinners) {
+ const int val = is.spinner->value();
+ if (val == -1) {
+ continue;
+ }
+
+ MIDIButtonProto *button_proto =
+ get_mutable_bus_message<MIDIButtonProto>(mapping_proto.get(), is.bus_idx, is.field_number);
+ button_proto->set_note_number(val);
+ }
+ for (const InstantiatedSpinner &is : light_spinners) {
+ const int val = is.spinner->value();
+ if (val == -1) {
+ continue;
+ }
+
+ MIDILightProto *light_proto =
+ get_mutable_bus_message<MIDILightProto>(mapping_proto.get(), is.bus_idx, is.field_number);
+ light_proto->set_note_number(val);
+ }
+ int highest_bank_used = 0; // 1-indexed.
+ for (const InstantiatedComboBox &ic : bank_combo_boxes) {
+ const int val = ic.combo_box->currentIndex();
+ highest_bank_used = std::max(highest_bank_used, val);
+ if (val == 0) {
+ continue;
+ }
+
+ const FieldDescriptor *descriptor = mapping_proto->GetDescriptor()->FindFieldByNumber(ic.field_number);
+ const Reflection *bus_reflection = mapping_proto->GetReflection();
+ bus_reflection->SetInt32(mapping_proto.get(), descriptor, val - 1);
+ }
+ mapping_proto->set_num_controller_banks(highest_bank_used);
+ return mapping_proto;
+}
+
+void MIDIMappingDialog::add_bank_selector(QTreeWidgetItem *item, const MIDIMappingProto &mapping_proto, int bank_field_number)
+{
+ if (bank_field_number == 0) {
+ return;
+ }
+ QComboBox *bank_selector = new QComboBox(this);
+ bank_selector->addItems(QStringList() << "" << "Bank 1" << "Bank 2" << "Bank 3" << "Bank 4" << "Bank 5");
+ bank_selector->setAutoFillBackground(true);
+
+ bank_combo_boxes.push_back(InstantiatedComboBox{ bank_selector, bank_field_number });
+
+ ui->treeWidget->setItemWidget(item, 1, bank_selector);
+}
+
+void MIDIMappingDialog::add_controls(const string &heading,
+ MIDIMappingDialog::ControlType control_type,
+ MIDIMappingDialog::SpinnerGroup spinner_group,
+ const MIDIMappingProto &mapping_proto,
+ const vector<MIDIMappingDialog::Control> &controls)
+{
+ QTreeWidgetItem *heading_item = new QTreeWidgetItem(ui->treeWidget);
+ heading_item->setText(0, QString::fromStdString(heading));
+ heading_item->setFirstColumnSpanned(true);
+ heading_item->setExpanded(true);
+ for (const Control &control : controls) {
+ QTreeWidgetItem *item = new QTreeWidgetItem(heading_item);
+ heading_item->addChild(item);
+ add_bank_selector(item, mapping_proto, control.bank_field_number);
+ item->setText(0, QString::fromStdString(control.label + " "));
+
+ for (unsigned bus_idx = 0; bus_idx < num_buses; ++bus_idx) {
+ QSpinBox *spinner = new QSpinBox(this);
+ spinner->setRange(-1, 127);
+ spinner->setAutoFillBackground(true);
+ spinner->setSpecialValueText("\u200d"); // Zero-width joiner (ie., empty).
+ spinner->installEventFilter(this); // So we know when the focus changes.
+ ui->treeWidget->setItemWidget(item, bus_idx + 2, spinner);
+
+ if (control_type == ControlType::CONTROLLER) {
+ controller_spinners.push_back(InstantiatedSpinner{ spinner, bus_idx, spinner_group, control.field_number });
+ } else if (control_type == ControlType::BUTTON) {
+ button_spinners.push_back(InstantiatedSpinner{ spinner, bus_idx, spinner_group, control.field_number });
+ } else {
+ assert(control_type == ControlType::LIGHT);
+ light_spinners.push_back(InstantiatedSpinner{ spinner, bus_idx, spinner_group, control.field_number });
+ }
+ spinners[bus_idx][control.field_number] = SpinnerAndGroup{ spinner, spinner_group };
+ connect(spinner, static_cast<void(QSpinBox::*)(int)>(&QSpinBox::valueChanged),
+ bind(&MIDIMappingDialog::update_guess_button_state, this));
+ }
+ }
+ ui->treeWidget->addTopLevelItem(heading_item);
+}
+
+void MIDIMappingDialog::fill_controls_from_mapping(const MIDIMappingProto &mapping_proto)
+{
+ for (const InstantiatedSpinner &is : controller_spinners) {
+ is.spinner->setValue(get_controller_mapping(mapping_proto, is.bus_idx, is.field_number, -1));
+ }
+ for (const InstantiatedSpinner &is : button_spinners) {
+ is.spinner->setValue(get_button_mapping(mapping_proto, is.bus_idx, is.field_number, -1));
+ }
+ for (const InstantiatedSpinner &is : light_spinners) {
+ is.spinner->setValue(get_light_mapping(mapping_proto, is.bus_idx, is.field_number, -1));
+ }
+ for (const InstantiatedComboBox &ic : bank_combo_boxes) {
+ ic.combo_box->setCurrentIndex(get_bank(mapping_proto, ic.field_number, -1) + 1);
+ }
+}
+
+void MIDIMappingDialog::controller_changed(unsigned controller)
+{
+ post_to_main_thread([=]{
+ for (const InstantiatedSpinner &is : controller_spinners) {
+ if (is.spinner->hasFocus()) {
+ is.spinner->setValue(controller);
+ is.spinner->selectAll();
+ }
+ }
+ });
+}
+
+void MIDIMappingDialog::note_on(unsigned note)
+{
+ post_to_main_thread([=]{
+ for (const InstantiatedSpinner &is : button_spinners) {
+ if (is.spinner->hasFocus()) {
+ is.spinner->setValue(note);
+ is.spinner->selectAll();
+ }
+ }
+ for (const InstantiatedSpinner &is : light_spinners) {
+ if (is.spinner->hasFocus()) {
+ is.spinner->setValue(note);
+ is.spinner->selectAll();
+ }
+ }
+ });
+}
+
+pair<int, int> MIDIMappingDialog::guess_offset(unsigned bus_idx, MIDIMappingDialog::SpinnerGroup spinner_group)
+{
+ constexpr pair<int, int> not_found(-1, 0);
+
+ if (bus_is_empty(bus_idx, spinner_group)) {
+ return not_found;
+ }
+
+ // See if we can find a non-empty bus to source from (prefer from the left).
+ unsigned source_bus_idx;
+ if (bus_idx > 0 && !bus_is_empty(bus_idx - 1, spinner_group)) {
+ source_bus_idx = bus_idx - 1;
+ } else if (bus_idx < num_buses - 1 && !bus_is_empty(bus_idx + 1, spinner_group)) {
+ source_bus_idx = bus_idx + 1;
+ } else {
+ return not_found;
+ }
+
+ // See if we can find a consistent offset.
+ bool found_offset = false;
+ int offset = 0;
+ int minimum_allowed_offset = numeric_limits<int>::min();
+ int maximum_allowed_offset = numeric_limits<int>::max();
+ for (const auto &field_number_and_spinner : spinners[bus_idx]) {
+ int field_number = field_number_and_spinner.first;
+ QSpinBox *spinner = field_number_and_spinner.second.spinner;
+ SpinnerGroup this_spinner_group = field_number_and_spinner.second.group;
+ assert(spinners[source_bus_idx].count(field_number));
+ QSpinBox *source_spinner = spinners[source_bus_idx][field_number].spinner;
+ assert(spinners[source_bus_idx][field_number].group == this_spinner_group);
+
+ if (spinner_group != SpinnerGroup::ALL_GROUPS &&
+ spinner_group != this_spinner_group) {
+ continue;
+ }
+ if (spinner->value() == -1) {
+ if (source_spinner->value() != -1) {
+ // If the source value is e.g. 3, offset can't be less than -2 or larger than 124.
+ // Otherwise, we'd extrapolate values outside [1..127].
+ minimum_allowed_offset = max(minimum_allowed_offset, 1 - source_spinner->value());
+ maximum_allowed_offset = min(maximum_allowed_offset, 127 - source_spinner->value());
+ }
+ continue;
+ }
+ if (source_spinner->value() == -1) {
+ // The bus has a controller set that the source bus doesn't set.
+ return not_found;
+ }
+
+ int candidate_offset = spinner->value() - source_spinner->value();
+ if (!found_offset) {
+ offset = candidate_offset;
+ found_offset = true;
+ } else if (candidate_offset != offset) {
+ return not_found;
+ }
+ }
+
+ if (!found_offset) {
+ // Given that the bus wasn't empty, this shouldn't happen.
+ assert(false);
+ return not_found;
+ }
+
+ if (offset < minimum_allowed_offset || offset > maximum_allowed_offset) {
+ return not_found;
+ }
+ return make_pair(source_bus_idx, offset);
+}
+
+bool MIDIMappingDialog::bus_is_empty(unsigned bus_idx, SpinnerGroup spinner_group)
+{
+ for (const auto &field_number_and_spinner : spinners[bus_idx]) {
+ QSpinBox *spinner = field_number_and_spinner.second.spinner;
+ SpinnerGroup this_spinner_group = field_number_and_spinner.second.group;
+ if (spinner_group != SpinnerGroup::ALL_GROUPS &&
+ spinner_group != this_spinner_group) {
+ continue;
+ }
+ if (spinner->value() != -1) {
+ return false;
+ }
+ }
+ return true;
+}
+
+void MIDIMappingDialog::update_guess_button_state()
+{
+ FocusInfo focus = find_focus();
+ if (focus.bus_idx < 0) {
+ return;
+ }
+ {
+ pair<int, int> bus_and_offset = guess_offset(focus.bus_idx, SpinnerGroup::ALL_GROUPS);
+ ui->guess_bus_button->setEnabled(bus_and_offset.first != -1);
+ }
+ {
+ pair<int, int> bus_and_offset = guess_offset(focus.bus_idx, focus.spinner_group);
+ ui->guess_group_button->setEnabled(bus_and_offset.first != -1);
+ }
+ last_focus = focus;
+}
+
+MIDIMappingDialog::FocusInfo MIDIMappingDialog::find_focus() const
+{
+ for (const InstantiatedSpinner &is : controller_spinners) {
+ if (is.spinner->hasFocus()) {
+ return FocusInfo{ int(is.bus_idx), is.spinner_group, is.field_number };
+ }
+ }
+ for (const InstantiatedSpinner &is : button_spinners) {
+ if (is.spinner->hasFocus()) {
+ return FocusInfo{ int(is.bus_idx), is.spinner_group, is.field_number };
+ }
+ }
+ for (const InstantiatedSpinner &is : light_spinners) {
+ if (is.spinner->hasFocus()) {
+ return FocusInfo{ int(is.bus_idx), is.spinner_group, is.field_number };
+ }
+ }
+ return FocusInfo{ -1, SpinnerGroup::ALL_GROUPS, -1 };
+}
projects / nageru / blobdiff