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

   1 #include "input_mapping_dialog.h"
   2
   3 #include "post_to_main_thread.h"
   4 #include "ui_input_mapping.h"
   5
   6 #include <QComboBox>
   7
   8 using namespace std;
   9 using namespace std::placeholders;
  10
  11 InputMappingDialog::InputMappingDialog()
  12         : ui(new Ui::InputMappingDialog),
  13           mapping(global_audio_mixer->get_input_mapping()),
  14           old_mapping(mapping),
  15           devices(global_audio_mixer->get_devices())
  16 {
  17         ui->setupUi(this);
  18         ui->table->setSelectionBehavior(QAbstractItemView::SelectRows);
  19         ui->table->setSelectionMode(QAbstractItemView::SingleSelection);  // Makes implementing moving easier for now.
  20
  21         fill_ui_from_mapping(mapping);
  22         connect(ui->table, &QTableWidget::cellChanged, this, &InputMappingDialog::cell_changed);
  23         connect(ui->ok_cancel_buttons, &QDialogButtonBox::accepted, this, &InputMappingDialog::ok_clicked);
  24         connect(ui->ok_cancel_buttons, &QDialogButtonBox::rejected, this, &InputMappingDialog::cancel_clicked);
  25         connect(ui->add_button, &QPushButton::clicked, this, &InputMappingDialog::add_clicked);
  26         connect(ui->remove_button, &QPushButton::clicked, this, &InputMappingDialog::remove_clicked);
  27         connect(ui->up_button, &QPushButton::clicked, bind(&InputMappingDialog::updown_clicked, this, -1));
  28         connect(ui->down_button, &QPushButton::clicked, bind(&InputMappingDialog::updown_clicked, this, 1));
  29
  30         update_button_state();
  31         connect(ui->table, &QTableWidget::itemSelectionChanged, this, &InputMappingDialog::update_button_state);
  32
  33         saved_callback = global_audio_mixer->get_state_changed_callback();
  34         global_audio_mixer->set_state_changed_callback([this]{
  35                 post_to_main_thread([this]{
  36                         devices = global_audio_mixer->get_devices();
  37                         for (unsigned row = 0; row < mapping.buses.size(); ++row) {
  38                                 fill_row_from_bus(row, mapping.buses[row]);
  39                         }
  40                 });
  41         });
  42 }
  43
  44 InputMappingDialog::~InputMappingDialog()
  45 {
  46         global_audio_mixer->set_state_changed_callback(saved_callback);
  47 }
  48
  49 void InputMappingDialog::fill_ui_from_mapping(const InputMapping &mapping)
  50 {
  51         ui->table->verticalHeader()->hide();
  52         ui->table->horizontalHeader()->setSectionResizeMode(1, QHeaderView::ResizeToContents);
  53         ui->table->horizontalHeader()->setSectionResizeMode(2, QHeaderView::ResizeToContents);
  54         ui->table->horizontalHeader()->setSectionResizeMode(3, QHeaderView::ResizeToContents);
  55         ui->table->horizontalHeader()->setSectionsClickable(false);
  56
  57         ui->table->setRowCount(mapping.buses.size());
  58         for (unsigned row = 0; row < mapping.buses.size(); ++row) {
  59                 fill_row_from_bus(row, mapping.buses[row]);
  60         }
  61 }
  62
  63 void InputMappingDialog::fill_row_from_bus(unsigned row, const InputMapping::Bus &bus)
  64 {
  65         QString name(QString::fromStdString(bus.name));
  66         ui->table->setItem(row, 0, new QTableWidgetItem(name));
  67
  68         // Card choices. If there's already a combobox here, we try to modify
  69         // the elements in-place, so that the UI doesn't go away under the user's feet
  70         // if they are in the process of choosing an item.
  71         QComboBox *card_combo = static_cast<QComboBox *>(ui->table->cellWidget(row, 1));
  72         if (card_combo == nullptr) {
  73                 card_combo = new QComboBox;
  74         }
  75         unsigned current_index = 0;
  76         if (card_combo->count() == 0) {
  77                 card_combo->addItem(QString("(none)   "));
  78         }
  79         for (const auto &spec_and_info : devices) {
  80                 QString label(QString::fromStdString(spec_and_info.second.display_name));
  81                 if (spec_and_info.first.type == InputSourceType::ALSA_INPUT) {
  82                         ALSAPool::Device::State state = global_audio_mixer->get_alsa_card_state(spec_and_info.first.index);
  83                         if (state == ALSAPool::Device::State::EMPTY) {
  84                                 continue;
  85                         } else if (state == ALSAPool::Device::State::STARTING) {
  86                                 label += " (busy)";
  87                         } else if (state == ALSAPool::Device::State::DEAD) {
  88                                 label += " (dead)";
  89                         }
  90                 }
  91                 ++current_index;
  92                 if (unsigned(card_combo->count()) > current_index) {
  93                         card_combo->setItemText(current_index, label + "   ");
  94                         card_combo->setItemData(current_index, qulonglong(DeviceSpec_to_key(spec_and_info.first)));
  95                 } else {
  96                         card_combo->addItem(
  97                                 label + "   ",
  98                                 qulonglong(DeviceSpec_to_key(spec_and_info.first)));
  99                 }
 100                 if (bus.device == spec_and_info.first) {
 101                         card_combo->setCurrentIndex(current_index);
 102                 }
 103         }
 104         // Remove any excess items from earlier. (This is only for paranoia;
 105         // they should be held, so it shouldn't matter.)
 106         while (unsigned(card_combo->count()) > current_index + 1) {
 107                 card_combo->removeItem(current_index + 1);
 108         }
 109         connect(card_combo, static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
 110                 bind(&InputMappingDialog::card_selected, this, card_combo, row, _1));
 111         ui->table->setCellWidget(row, 1, card_combo);
 112
 113         setup_channel_choices_from_bus(row, bus);
 114 }
 115
 116 void InputMappingDialog::setup_channel_choices_from_bus(unsigned row, const InputMapping::Bus &bus)
 117 {
 118         // Left and right channel.
 119         // TODO: If there's already a widget here, modify it instead of creating a new one,
 120         // as we do with card choices.
 121         for (unsigned channel = 0; channel < 2; ++channel) {
 122                 QComboBox *channel_combo = new QComboBox;
 123                 channel_combo->addItem(QString("(none)"));
 124                 if (bus.device.type == InputSourceType::CAPTURE_CARD ||
 125                     bus.device.type == InputSourceType::ALSA_INPUT) {
 126                         auto device_it = devices.find(bus.device);
 127                         assert(device_it != devices.end());
 128                         unsigned num_device_channels = device_it->second.num_channels;
 129                         for (unsigned source = 0; source < num_device_channels; ++source) {
 130                                 char buf[256];
 131                                 snprintf(buf, sizeof(buf), "Channel %u   ", source + 1);
 132                                 channel_combo->addItem(QString(buf));
 133                         }
 134                         channel_combo->setCurrentIndex(bus.source_channel[channel] + 1);
 135                 } else {
 136                         channel_combo->setCurrentIndex(0);
 137                 }
 138                 connect(channel_combo, static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
 139                         bind(&InputMappingDialog::channel_selected, this, row, channel, _1));
 140                 ui->table->setCellWidget(row, 2 + channel, channel_combo);
 141         }
 142 }
 143
 144 void InputMappingDialog::ok_clicked()
 145 {
 146         global_audio_mixer->set_state_changed_callback(saved_callback);
 147         global_audio_mixer->set_input_mapping(mapping);
 148         accept();
 149 }
 150
 151 void InputMappingDialog::cancel_clicked()
 152 {
 153         global_audio_mixer->set_state_changed_callback(saved_callback);
 154         global_audio_mixer->set_input_mapping(old_mapping);
 155         reject();
 156 }
 157
 158 void InputMappingDialog::cell_changed(int row, int column)
 159 {
 160         if (column != 0) {
 161                 // Spurious; only really the name column should fire these.
 162                 return;
 163         }
 164         mapping.buses[row].name = ui->table->item(row, column)->text().toStdString();
 165 }
 166
 167 void InputMappingDialog::card_selected(QComboBox *card_combo, unsigned row, int index)
 168 {
 169         uint64_t key = card_combo->itemData(index).toULongLong();
 170         mapping.buses[row].device = key_to_DeviceSpec(key);
 171         setup_channel_choices_from_bus(row, mapping.buses[row]);
 172 }
 173
 174 void InputMappingDialog::channel_selected(unsigned row, unsigned channel, int index)
 175 {
 176         mapping.buses[row].source_channel[channel] = index - 1;
 177 }
 178
 179 void InputMappingDialog::add_clicked()
 180 {
 181         QTableWidgetSelectionRange all(0, 0, ui->table->rowCount() - 1, ui->table->columnCount() - 1);
 182         ui->table->setRangeSelected(all, false);
 183
 184         InputMapping::Bus new_bus;
 185         new_bus.name = "New input";
 186         new_bus.device.type = InputSourceType::SILENCE;
 187         mapping.buses.push_back(new_bus);
 188         ui->table->setRowCount(mapping.buses.size());
 189
 190         unsigned row = mapping.buses.size() - 1;
 191         fill_row_from_bus(row, new_bus);
 192         ui->table->editItem(ui->table->item(row, 0));  // Start editing the name.
 193         update_button_state();
 194 }
 195
 196 void InputMappingDialog::remove_clicked()
 197 {
 198         assert(ui->table->rowCount() != 0);
 199
 200         set<int, greater<int>> rows_to_delete;  // Need to remove in reverse order.
 201         for (const QTableWidgetSelectionRange &range : ui->table->selectedRanges()) {
 202                 for (int row = range.topRow(); row <= range.bottomRow(); ++row) {
 203                         rows_to_delete.insert(row);
 204                 }
 205         }
 206         if (rows_to_delete.empty()) {
 207                 rows_to_delete.insert(ui->table->rowCount() - 1);
 208         }
 209
 210         for (int row : rows_to_delete) {
 211                 ui->table->removeRow(row);
 212                 mapping.buses.erase(mapping.buses.begin() + row);
 213         }
 214         update_button_state();
 215 }
 216
 217 void InputMappingDialog::updown_clicked(int direction)
 218 {
 219         assert(ui->table->selectedRanges().size() == 1);
 220         const QTableWidgetSelectionRange &range = ui->table->selectedRanges()[0];
 221         int a_row = range.bottomRow();
 222         int b_row = range.bottomRow() + direction;
 223
 224         swap(mapping.buses[a_row], mapping.buses[b_row]);
 225         fill_row_from_bus(a_row, mapping.buses[a_row]);
 226         fill_row_from_bus(b_row, mapping.buses[b_row]);
 227
 228         QTableWidgetSelectionRange a_sel(a_row, 0, a_row, ui->table->columnCount() - 1);
 229         QTableWidgetSelectionRange b_sel(b_row, 0, b_row, ui->table->columnCount() - 1);
 230         ui->table->setRangeSelected(a_sel, false);
 231         ui->table->setRangeSelected(b_sel, true);
 232 }
 233
 234 void InputMappingDialog::update_button_state()
 235 {
 236         ui->add_button->setDisabled(mapping.buses.size() >= MAX_BUSES);
 237         ui->remove_button->setDisabled(mapping.buses.size() == 0);
 238         ui->up_button->setDisabled(
 239                 ui->table->selectedRanges().empty() ||
 240                 ui->table->selectedRanges()[0].bottomRow() == 0);
 241         ui->down_button->setDisabled(
 242                 ui->table->selectedRanges().empty() ||
 243                 ui->table->selectedRanges()[0].bottomRow() == ui->table->rowCount() - 1);
 244 }