git.sesse.net Git - nageru/blob - midi_mapping_dialog.cpp

   1 #include "midi_mapping_dialog.h"
   2
   3 #include "midi_mapper.h"
   4 #include "midi_mapping.pb.h"
   5 #include "post_to_main_thread.h"
   6 #include "ui_midi_mapping.h"
   7
   8 #include <QComboBox>
   9 #include <QFileDialog>
  10 #include <QMessageBox>
  11 #include <QSpinBox>
  12
  13 #include <string>
  14
  15 using namespace google::protobuf;
  16 using namespace std;
  17
  18 vector<MIDIMappingDialog::Control> per_bus_controllers = {
  19         { "Treble",                   MIDIMappingBusProto::kTrebleFieldNumber, MIDIMappingProto::kTrebleBankFieldNumber },
  20         { "Mid",                      MIDIMappingBusProto::kMidFieldNumber,    MIDIMappingProto::kMidBankFieldNumber },
  21         { "Bass",                     MIDIMappingBusProto::kBassFieldNumber,   MIDIMappingProto::kBassBankFieldNumber },
  22         { "Gain",                     MIDIMappingBusProto::kGainFieldNumber,   MIDIMappingProto::kGainBankFieldNumber },
  23         { "Compressor threshold",     MIDIMappingBusProto::kCompressorThresholdFieldNumber,
  24                                       MIDIMappingProto::kCompressorThresholdBankFieldNumber},
  25         { "Fader",                    MIDIMappingBusProto::kFaderFieldNumber,  MIDIMappingProto::kFaderBankFieldNumber }
  26 };
  27 vector<MIDIMappingDialog::Control> per_bus_buttons = {
  28         { "Toggle locut",             MIDIMappingBusProto::kToggleLocutFieldNumber,
  29                                       MIDIMappingProto::kToggleLocutBankFieldNumber },
  30         { "Togle auto gain staging",  MIDIMappingBusProto::kToggleAutoGainStagingFieldNumber,
  31                                       MIDIMappingProto::kToggleAutoGainStagingBankFieldNumber },
  32         { "Togle compressor",         MIDIMappingBusProto::kToggleCompressorFieldNumber,
  33                                       MIDIMappingProto::kToggleCompressorBankFieldNumber },
  34         { "Clear peak",               MIDIMappingBusProto::kClearPeakFieldNumber,
  35                                       MIDIMappingProto::kClearPeakBankFieldNumber }
  36 };
  37 vector<MIDIMappingDialog::Control> global_controllers = {
  38         { "Locut cutoff",             MIDIMappingBusProto::kLocutFieldNumber,  MIDIMappingProto::kLocutBankFieldNumber },
  39         { "Limiter threshold",        MIDIMappingBusProto::kLimiterThresholdFieldNumber,
  40                                       MIDIMappingProto::kLimiterThresholdBankFieldNumber },
  41         { "Makeup gain",              MIDIMappingBusProto::kMakeupGainFieldNumber,
  42                                       MIDIMappingProto::kMakeupGainBankFieldNumber }
  43 };
  44 vector<MIDIMappingDialog::Control> global_buttons = {
  45         { "Previous bank",            MIDIMappingBusProto::kPrevBankFieldNumber, 0 },
  46         { "Next bank",                MIDIMappingBusProto::kNextBankFieldNumber, 0 },
  47         { "Select bank 1",            MIDIMappingBusProto::kSelectBank1FieldNumber, 0 },
  48         { "Select bank 2",            MIDIMappingBusProto::kSelectBank2FieldNumber, 0 },
  49         { "Select bank 3",            MIDIMappingBusProto::kSelectBank3FieldNumber, 0 },
  50         { "Select bank 4",            MIDIMappingBusProto::kSelectBank4FieldNumber, 0 },
  51         { "Select bank 5",            MIDIMappingBusProto::kSelectBank5FieldNumber, 0 }
  52 };
  53
  54 namespace {
  55
  56 int get_bank(const MIDIMappingProto &mapping_proto, int bank_field_number, int default_value)
  57 {
  58         const FieldDescriptor *bank_descriptor = mapping_proto.GetDescriptor()->FindFieldByNumber(bank_field_number);
  59         const Reflection *reflection = mapping_proto.GetReflection();
  60         if (!reflection->HasField(mapping_proto, bank_descriptor)) {
  61                 return default_value;
  62         }
  63         return reflection->GetInt32(mapping_proto, bank_descriptor);
  64 }
  65
  66 int get_controller_mapping(const MIDIMappingProto &mapping_proto, size_t bus_idx, int field_number, int default_value)
  67 {
  68         if (bus_idx >= size_t(mapping_proto.bus_mapping_size())) {
  69                 return default_value;
  70         }
  71
  72         const MIDIMappingBusProto &bus_mapping = mapping_proto.bus_mapping(bus_idx);
  73         const FieldDescriptor *descriptor = bus_mapping.GetDescriptor()->FindFieldByNumber(field_number);
  74         const Reflection *bus_reflection = bus_mapping.GetReflection();
  75         if (!bus_reflection->HasField(bus_mapping, descriptor)) {
  76                 return default_value;
  77         }
  78         const MIDIControllerProto &controller_proto =
  79                 static_cast<const MIDIControllerProto &>(bus_reflection->GetMessage(bus_mapping, descriptor));
  80         return controller_proto.controller_number();
  81 }
  82
  83 int get_button_mapping(const MIDIMappingProto &mapping_proto, size_t bus_idx, int field_number, int default_value)
  84 {
  85         if (bus_idx >= size_t(mapping_proto.bus_mapping_size())) {
  86                 return default_value;
  87         }
  88
  89         const MIDIMappingBusProto &bus_mapping = mapping_proto.bus_mapping(bus_idx);
  90         const FieldDescriptor *descriptor = bus_mapping.GetDescriptor()->FindFieldByNumber(field_number);
  91         const Reflection *bus_reflection = bus_mapping.GetReflection();
  92         if (!bus_reflection->HasField(bus_mapping, descriptor)) {
  93                 return default_value;
  94         }
  95         const MIDIButtonProto &bus_proto =
  96                 static_cast<const MIDIButtonProto &>(bus_reflection->GetMessage(bus_mapping, descriptor));
  97         return bus_proto.note_number();
  98 }
  99
 100 }  // namespace
 101
 102 MIDIMappingDialog::MIDIMappingDialog(MIDIMapper *mapper)
 103         : ui(new Ui::MIDIMappingDialog),
 104           mapper(mapper)
 105 {
 106         ui->setupUi(this);
 107
 108         const MIDIMappingProto mapping_proto = mapper->get_current_mapping();  // Take a copy.
 109
 110         QStringList labels;
 111         labels << "";
 112         labels << "Controller bank";
 113         for (unsigned bus_idx = 0; bus_idx < num_buses; ++bus_idx) {
 114                 char buf[256];
 115                 snprintf(buf, sizeof(buf), "Bus %d", bus_idx + 1);
 116                 labels << buf;
 117         }
 118         labels << "";
 119         ui->treeWidget->setColumnCount(num_buses + 3);
 120         ui->treeWidget->setHeaderLabels(labels);
 121
 122         add_controls("Per-bus controllers", ControlType::CONTROLLER, mapping_proto, per_bus_controllers);
 123         add_controls("Per-bus buttons", ControlType::BUTTON, mapping_proto, per_bus_buttons);
 124         add_controls("Global controllers", ControlType::CONTROLLER, mapping_proto, global_controllers);
 125         add_controls("Global buttons", ControlType::BUTTON, mapping_proto, global_buttons);
 126         fill_controls_from_mapping(mapping_proto);
 127
 128         // Auto-resize every column but the last.
 129         for (unsigned column_idx = 0; column_idx < num_buses + 3; ++column_idx) {
 130                 ui->treeWidget->resizeColumnToContents(column_idx);
 131         }
 132
 133         connect(ui->ok_cancel_buttons, &QDialogButtonBox::accepted, this, &MIDIMappingDialog::ok_clicked);
 134         connect(ui->ok_cancel_buttons, &QDialogButtonBox::rejected, this, &MIDIMappingDialog::cancel_clicked);
 135         connect(ui->save_button, &QPushButton::clicked, this, &MIDIMappingDialog::save_clicked);
 136         connect(ui->load_button, &QPushButton::clicked, this, &MIDIMappingDialog::load_clicked);
 137 }
 138
 139 MIDIMappingDialog::~MIDIMappingDialog()
 140 {
 141 }
 142
 143 void MIDIMappingDialog::ok_clicked()
 144 {
 145         unique_ptr<MIDIMappingProto> new_mapping = construct_mapping_proto_from_ui();
 146         mapper->set_midi_mapping(*new_mapping);
 147         accept();
 148 }
 149
 150 void MIDIMappingDialog::cancel_clicked()
 151 {
 152         reject();
 153 }
 154
 155 void MIDIMappingDialog::save_clicked()
 156 {
 157         unique_ptr<MIDIMappingProto> new_mapping = construct_mapping_proto_from_ui();
 158         QString filename = QFileDialog::getSaveFileName(this,
 159                 "Save MIDI mapping", QString(), tr("Mapping files (*.midimapping)"));
 160         if (!filename.endsWith(".midimapping")) {
 161                 filename += ".midimapping";
 162         }
 163         if (!save_midi_mapping_to_file(*new_mapping, filename.toStdString())) {
 164                 QMessageBox box;
 165                 box.setText("Could not save mapping to '" + filename + "'. Check that you have the right permissions and try again.");
 166                 box.exec();
 167         }
 168 }
 169
 170 void MIDIMappingDialog::load_clicked()
 171 {
 172         QString filename = QFileDialog::getOpenFileName(this,
 173                 "Load MIDI mapping", QString(), tr("Mapping files (*.midimapping)"));
 174         MIDIMappingProto new_mapping;
 175         if (!load_midi_mapping_from_file(filename.toStdString(), &new_mapping)) {
 176                 QMessageBox box;
 177                 box.setText("Could not load mapping from '" + filename + "'. Check that the file exists, has the right permissions and is valid.");
 178                 box.exec();
 179                 return;
 180         }
 181
 182         fill_controls_from_mapping(new_mapping);
 183 }
 184
 185 namespace {
 186
 187 template<class T>
 188 T *get_mutable_bus_message(MIDIMappingProto *mapping_proto, unsigned bus_idx, int field_number)
 189 {
 190         while (size_t(mapping_proto->bus_mapping_size()) <= bus_idx) {
 191                 mapping_proto->add_bus_mapping();
 192         }
 193
 194         MIDIMappingBusProto *bus_mapping = mapping_proto->mutable_bus_mapping(bus_idx);
 195         const FieldDescriptor *descriptor = bus_mapping->GetDescriptor()->FindFieldByNumber(field_number);
 196         const Reflection *bus_reflection = bus_mapping->GetReflection();
 197         return static_cast<T *>(bus_reflection->MutableMessage(bus_mapping, descriptor));
 198 }
 199
 200 }  // namespace
 201
 202 unique_ptr<MIDIMappingProto> MIDIMappingDialog::construct_mapping_proto_from_ui()
 203 {
 204         unique_ptr<MIDIMappingProto> mapping_proto(new MIDIMappingProto);
 205         for (const InstantiatedSpinner &is : controller_spinners) {
 206                 const int val = is.spinner->value();
 207                 if (val == 0) {
 208                         continue;
 209                 }
 210
 211                 MIDIControllerProto *controller_proto =
 212                         get_mutable_bus_message<MIDIControllerProto>(mapping_proto.get(), is.bus_idx, is.field_number);
 213                 controller_proto->set_controller_number(val);
 214         }
 215         for (const InstantiatedSpinner &is : button_spinners) {
 216                 const int val = is.spinner->value();
 217                 if (val == 0) {
 218                         continue;
 219                 }
 220
 221                 MIDIButtonProto *button_proto =
 222                         get_mutable_bus_message<MIDIButtonProto>(mapping_proto.get(), is.bus_idx, is.field_number);
 223                 button_proto->set_note_number(val);
 224         }
 225         int highest_bank_used = 0;  // 1-indexed.
 226         for (const InstantiatedComboBox &ic : bank_combo_boxes) {
 227                 const int val = ic.combo_box->currentIndex();
 228                 highest_bank_used = std::max(highest_bank_used, val);
 229                 if (val == 0) {
 230                         continue;
 231                 }
 232
 233                 const FieldDescriptor *descriptor = mapping_proto->GetDescriptor()->FindFieldByNumber(ic.field_number);
 234                 const Reflection *bus_reflection = mapping_proto->GetReflection();
 235                 bus_reflection->SetInt32(mapping_proto.get(), descriptor, val - 1);
 236         }
 237         mapping_proto->set_num_controller_banks(highest_bank_used);
 238         return mapping_proto;
 239 }
 240
 241 void MIDIMappingDialog::add_bank_selector(QTreeWidgetItem *item, const MIDIMappingProto &mapping_proto, int bank_field_number)
 242 {
 243         if (bank_field_number == 0) {
 244                 return;
 245         }
 246         QComboBox *bank_selector = new QComboBox(this);
 247         bank_selector->addItems(QStringList() << "" << "Bank 1" << "Bank 2" << "Bank 3" << "Bank 4" << "Bank 5");
 248         bank_selector->setAutoFillBackground(true);
 249
 250         bank_combo_boxes.push_back(InstantiatedComboBox{ bank_selector, bank_field_number });
 251
 252         ui->treeWidget->setItemWidget(item, 1, bank_selector);
 253 }
 254
 255 void MIDIMappingDialog::add_controls(const string &heading,
 256                                      MIDIMappingDialog::ControlType control_type,
 257                                      const MIDIMappingProto &mapping_proto,
 258                                      const vector<MIDIMappingDialog::Control> &controls)
 259 {
 260         QTreeWidgetItem *heading_item = new QTreeWidgetItem(ui->treeWidget);
 261         heading_item->setText(0, QString::fromStdString(heading));
 262         heading_item->setFirstColumnSpanned(true);
 263         heading_item->setExpanded(true);
 264         for (const Control &control : controls) {
 265                 QTreeWidgetItem *item = new QTreeWidgetItem(heading_item);
 266                 heading_item->addChild(item);
 267                 add_bank_selector(item, mapping_proto, control.bank_field_number);
 268                 item->setText(0, QString::fromStdString(control.label + "   "));
 269
 270                 for (unsigned bus_idx = 0; bus_idx < num_buses; ++bus_idx) {
 271                         QSpinBox *spinner = new QSpinBox(this);
 272                         spinner->setRange(0, 127);
 273                         spinner->setAutoFillBackground(true);
 274                         spinner->setSpecialValueText("\u200d");  // Zero-width joiner (ie., empty).
 275                         ui->treeWidget->setItemWidget(item, bus_idx + 2, spinner);
 276
 277                         if (control_type == ControlType::CONTROLLER) {
 278                                 controller_spinners.push_back(InstantiatedSpinner{ spinner, bus_idx, control.field_number });
 279                         } else {
 280                                 assert(control_type == ControlType::BUTTON);
 281                                 button_spinners.push_back(InstantiatedSpinner{ spinner, bus_idx, control.field_number });
 282                         }
 283                 }
 284         }
 285         ui->treeWidget->addTopLevelItem(heading_item);
 286 }
 287
 288 void MIDIMappingDialog::fill_controls_from_mapping(const MIDIMappingProto &mapping_proto)
 289 {
 290         for (const InstantiatedSpinner &is : controller_spinners) {
 291                 is.spinner->setValue(get_controller_mapping(mapping_proto, is.bus_idx, is.field_number, 0));
 292         }
 293         for (const InstantiatedSpinner &is : button_spinners) {
 294                 is.spinner->setValue(get_button_mapping(mapping_proto, is.bus_idx, is.field_number, 0));
 295         }
 296         for (const InstantiatedComboBox &ic : bank_combo_boxes) {
 297                 ic.combo_box->setCurrentIndex(get_bank(mapping_proto, ic.field_number, -1) + 1);
 298         }
 299 }