#include <QMessageBox>
#include <QSpinBox>
+#include <algorithm>
#include <string>
using namespace google::protobuf;
ui->treeWidget->resizeColumnToContents(column_idx);
}
+ connect(ui->guess_button, &QPushButton::clicked, this, &MIDIMappingDialog::guess_clicked);
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);
}
+bool MIDIMappingDialog::eventFilter(QObject *obj, QEvent *event)
+{
+ if (event->type() == QEvent::FocusIn ||
+ event->type() == QEvent::FocusOut) {
+ // We ignore the guess button itself; it should be allowed
+ // to navigate from a spinner to focus on the button (to click it).
+ if (obj != ui->guess_button) {
+ update_guess_button_state();
+ }
+ }
+ return false;
+}
+
+void MIDIMappingDialog::guess_clicked()
+{
+ int focus_bus_idx = find_focus_bus();
+ if (focus_bus_idx == -1) {
+ // The guess button probably took the focus away from us.
+ focus_bus_idx = last_focus_bus_idx;
+ }
+ assert(focus_bus_idx != -1); // The button should have been disabled.
+ pair<int, int> bus_and_offset = guess_offset(focus_bus_idx);
+ 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;
+
+ assert(spinners[source_bus_idx].count(field_number));
+ QSpinBox *source_spinner = spinners[source_bus_idx][field_number];
+
+ if (source_spinner->value() != 0) {
+ spinner->setValue(source_spinner->value() + offset);
+ }
+ }
+}
+
void MIDIMappingDialog::ok_clicked()
{
unique_ptr<MIDIMappingProto> new_mapping = construct_mapping_proto_from_ui();
spinner->setRange(0, 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) {
assert(control_type == ControlType::BUTTON);
button_spinners.push_back(InstantiatedSpinner{ spinner, bus_idx, control.field_number });
}
+ spinners[bus_idx][control.field_number] = spinner;
+ connect(spinner, static_cast<void(QSpinBox::*)(int)>(&QSpinBox::valueChanged),
+ bind(&MIDIMappingDialog::update_guess_button_state, this));
}
}
ui->treeWidget->addTopLevelItem(heading_item);
}
}
}
+
+pair<int, int> MIDIMappingDialog::guess_offset(unsigned bus_idx)
+{
+ constexpr pair<int, int> not_found(-1, 0);
+
+ if (bus_is_empty(bus_idx)) {
+ 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)) {
+ source_bus_idx = bus_idx - 1;
+ } else if (bus_idx < num_buses - 1 && !bus_is_empty(bus_idx + 1)) {
+ 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;
+ 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;
+
+ if (spinner->value() == 0) {
+ continue;
+ }
+
+ assert(spinners[source_bus_idx].count(field_number));
+ QSpinBox *source_spinner = spinners[source_bus_idx][field_number];
+ if (source_spinner->value() == 0) {
+ // 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;
+ }
+ return make_pair(source_bus_idx, offset);
+}
+
+bool MIDIMappingDialog::bus_is_empty(unsigned bus_idx)
+{
+ for (const auto &field_number_and_spinner : spinners[bus_idx]) {
+ QSpinBox *spinner = field_number_and_spinner.second;
+ if (spinner->value() != 0) {
+ return false;
+ }
+ }
+ return true;
+}
+
+void MIDIMappingDialog::update_guess_button_state()
+{
+ int focus_bus_idx = find_focus_bus();
+ if (focus_bus_idx < 0) {
+ return;
+ }
+ pair<int, int> bus_and_offset = guess_offset(focus_bus_idx);
+ ui->guess_button->setEnabled(bus_and_offset.first != -1);
+ last_focus_bus_idx = focus_bus_idx;
+}
+
+int MIDIMappingDialog::find_focus_bus()
+{
+ for (const InstantiatedSpinner &is : controller_spinners) {
+ if (is.spinner->hasFocus()) {
+ return is.bus_idx;
+ }
+ }
+ for (const InstantiatedSpinner &is : button_spinners) {
+ if (is.spinner->hasFocus()) {
+ return is.bus_idx;
+ }
+ }
+ return -1;
+}
projects / nageru / blobdiff