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

   1 #include "input_mapping_dialog.h"
   2
   3 #include "ui_input_mapping.h"
   4
   5 #include <QComboBox>
   6
   7 using namespace std;
   8 using namespace std::placeholders;
   9
  10 InputMappingDialog::InputMappingDialog()
  11         : ui(new Ui::InputMappingDialog),
  12           mapping(global_mixer->get_audio_mixer()->get_input_mapping()),
  13           old_mapping(mapping),
  14           devices(global_mixer->get_audio_mixer()->get_devices())
  15 {
  16         ui->setupUi(this);
  17         ui->table->setSelectionBehavior(QAbstractItemView::SelectRows);
  18         ui->table->setSelectionMode(QAbstractItemView::SingleSelection);  // Makes implementing moving easier for now.
  19
  20         fill_ui_from_mapping(mapping);
  21         connect(ui->table, &QTableWidget::cellChanged, this, &InputMappingDialog::cell_changed);
  22         connect(ui->ok_cancel_buttons, &QDialogButtonBox::accepted, this, &InputMappingDialog::ok_clicked);
  23         connect(ui->ok_cancel_buttons, &QDialogButtonBox::rejected, this, &InputMappingDialog::cancel_clicked);
  24         connect(ui->add_button, &QPushButton::clicked, this, &InputMappingDialog::add_clicked);
  25         connect(ui->remove_button, &QPushButton::clicked, this, &InputMappingDialog::remove_clicked);
  26         connect(ui->up_button, &QPushButton::clicked, bind(&InputMappingDialog::updown_clicked, this, -1));
  27         connect(ui->down_button, &QPushButton::clicked, bind(&InputMappingDialog::updown_clicked, this, 1));
  28
  29         update_button_state();
  30         connect(ui->table, &QTableWidget::itemSelectionChanged, this, &InputMappingDialog::update_button_state);
  31 }
  32
  33 void InputMappingDialog::fill_ui_from_mapping(const InputMapping &mapping)
  34 {
  35         ui->table->verticalHeader()->hide();
  36         ui->table->horizontalHeader()->setSectionResizeMode(1, QHeaderView::ResizeToContents);
  37         ui->table->horizontalHeader()->setSectionResizeMode(2, QHeaderView::ResizeToContents);
  38         ui->table->horizontalHeader()->setSectionResizeMode(3, QHeaderView::ResizeToContents);
  39         ui->table->horizontalHeader()->setSectionsClickable(false);
  40
  41         ui->table->setRowCount(mapping.buses.size());
  42         for (unsigned row = 0; row < mapping.buses.size(); ++row) {
  43                 fill_row_from_bus(row, mapping.buses[row]);
  44         }
  45 }
  46
  47 void InputMappingDialog::fill_row_from_bus(unsigned row, const InputMapping::Bus &bus)
  48 {
  49         QString name(QString::fromStdString(bus.name));
  50         ui->table->setItem(row, 0, new QTableWidgetItem(name));
  51
  52         // Card choices.
  53         QComboBox *card_combo = new QComboBox;
  54         unsigned current_index = 0;
  55         card_combo->addItem(QString("(none)   "));
  56         for (const auto &spec_and_info : devices) {
  57                 ++current_index;
  58                 card_combo->addItem(
  59                         QString::fromStdString(spec_and_info.second.name + "   "),
  60                         qulonglong(DeviceSpec_to_key(spec_and_info.first)));
  61                 if (bus.device == spec_and_info.first) {
  62                         card_combo->setCurrentIndex(current_index);
  63                 }
  64         }
  65         connect(card_combo, static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
  66                 bind(&InputMappingDialog::card_selected, this, card_combo, row, _1));
  67         ui->table->setCellWidget(row, 1, card_combo);
  68
  69         setup_channel_choices_from_bus(row, bus);
  70 }
  71
  72 void InputMappingDialog::setup_channel_choices_from_bus(unsigned row, const InputMapping::Bus &bus)
  73 {
  74         // Left and right channel.
  75         for (unsigned channel = 0; channel < 2; ++channel) {
  76                 QComboBox *channel_combo = new QComboBox;
  77                 channel_combo->addItem(QString("(none)"));
  78                 if (bus.device.type == InputSourceType::CAPTURE_CARD ||
  79                     bus.device.type == InputSourceType::ALSA_INPUT) {
  80                         auto device_it = devices.find(bus.device);
  81                         assert(device_it != devices.end());
  82                         unsigned num_device_channels = device_it->second.num_channels;
  83                         for (unsigned source = 0; source < num_device_channels; ++source) {
  84                                 char buf[256];
  85                                 snprintf(buf, sizeof(buf), "Channel %u   ", source + 1);
  86                                 channel_combo->addItem(QString(buf));
  87                         }
  88                         channel_combo->setCurrentIndex(bus.source_channel[channel] + 1);
  89                 } else {
  90                         channel_combo->setCurrentIndex(0);
  91                 }
  92                 connect(channel_combo, static_cast<void(QComboBox::*)(int)>(&QComboBox::currentIndexChanged),
  93                         bind(&InputMappingDialog::channel_selected, this, row, channel, _1));
  94                 ui->table->setCellWidget(row, 2 + channel, channel_combo);
  95         }
  96 }
  97
  98 void InputMappingDialog::ok_clicked()
  99 {
 100         global_mixer->get_audio_mixer()->set_input_mapping(mapping);
 101         accept();
 102 }
 103
 104 void InputMappingDialog::cancel_clicked()
 105 {
 106         global_mixer->get_audio_mixer()->set_input_mapping(old_mapping);
 107         reject();
 108 }
 109
 110 void InputMappingDialog::cell_changed(int row, int column)
 111 {
 112         if (column != 0) {
 113                 // Spurious; only really the name column should fire these.
 114                 return;
 115         }
 116         mapping.buses[row].name = ui->table->item(row, column)->text().toStdString();
 117 }
 118
 119 void InputMappingDialog::card_selected(QComboBox *card_combo, unsigned row, int index)
 120 {
 121         uint64_t key = card_combo->itemData(index).toULongLong();
 122         mapping.buses[row].device = key_to_DeviceSpec(key);
 123         setup_channel_choices_from_bus(row, mapping.buses[row]);
 124 }
 125
 126 void InputMappingDialog::channel_selected(unsigned row, unsigned channel, int index)
 127 {
 128         mapping.buses[row].source_channel[channel] = index - 1;
 129 }
 130
 131 void InputMappingDialog::add_clicked()
 132 {
 133         QTableWidgetSelectionRange all(0, 0, ui->table->rowCount() - 1, ui->table->columnCount() - 1);
 134         ui->table->setRangeSelected(all, false);
 135
 136         InputMapping::Bus new_bus;
 137         new_bus.name = "New input";
 138         new_bus.device.type = InputSourceType::SILENCE;
 139         mapping.buses.push_back(new_bus);
 140         ui->table->setRowCount(mapping.buses.size());
 141
 142         unsigned row = mapping.buses.size() - 1;
 143         fill_row_from_bus(row, new_bus);
 144         ui->table->editItem(ui->table->item(row, 0));  // Start editing the name.
 145         update_button_state();
 146 }
 147
 148 void InputMappingDialog::remove_clicked()
 149 {
 150         assert(ui->table->rowCount() != 0);
 151
 152         set<int, greater<int>> rows_to_delete;  // Need to remove in reverse order.
 153         for (const QTableWidgetSelectionRange &range : ui->table->selectedRanges()) {
 154                 for (int row = range.topRow(); row <= range.bottomRow(); ++row) {
 155                         rows_to_delete.insert(row);
 156                 }
 157         }
 158         if (rows_to_delete.empty()) {
 159                 rows_to_delete.insert(ui->table->rowCount() - 1);
 160         }
 161
 162         for (int row : rows_to_delete) {
 163                 ui->table->removeRow(row);
 164                 mapping.buses.erase(mapping.buses.begin() + row);
 165         }
 166         update_button_state();
 167 }
 168
 169 void InputMappingDialog::updown_clicked(int direction)
 170 {
 171         assert(ui->table->selectedRanges().size() == 1);
 172         const QTableWidgetSelectionRange &range = ui->table->selectedRanges()[0];
 173         int a_row = range.bottomRow();
 174         int b_row = range.bottomRow() + direction;
 175
 176         swap(mapping.buses[a_row], mapping.buses[b_row]);
 177         fill_row_from_bus(a_row, mapping.buses[a_row]);
 178         fill_row_from_bus(b_row, mapping.buses[b_row]);
 179
 180         QTableWidgetSelectionRange a_sel(a_row, 0, a_row, ui->table->columnCount() - 1);
 181         QTableWidgetSelectionRange b_sel(b_row, 0, b_row, ui->table->columnCount() - 1);
 182         ui->table->setRangeSelected(a_sel, false);
 183         ui->table->setRangeSelected(b_sel, true);
 184 }
 185
 186 void InputMappingDialog::update_button_state()
 187 {
 188         ui->add_button->setDisabled(mapping.buses.size() >= MAX_BUSES);
 189         ui->remove_button->setDisabled(mapping.buses.size() == 0);
 190         ui->up_button->setDisabled(
 191                 ui->table->selectedRanges().empty() ||
 192                 ui->table->selectedRanges()[0].bottomRow() == 0);
 193         ui->down_button->setDisabled(
 194                 ui->table->selectedRanges().empty() ||
 195                 ui->table->selectedRanges()[0].bottomRow() == ui->table->rowCount() - 1);
 196 }