Write up the new input modes to NVS and settings

src/drivers/nvs.cpp

@@ -31,6 +31,7 @@ static constexpr char kKeyBrightness[] = "bright";
 static constexpr char kKeyAmpMaxVolume[] = "hp_vol_max";
 static constexpr char kKeyAmpCurrentVolume[] = "hp_vol";
 static constexpr char kKeyOnboarded[] = "intro";
+static constexpr char kKeyPrimaryInput[] = "in_pri";
 
 auto NvsStorage::OpenSync() -> NvsStorage* {
   esp_err_t err = nvs_flash_init();
@@ -166,4 +167,27 @@ auto NvsStorage::HasShownOnboarding(bool val) -> bool {
   return nvs_commit(handle_) == ESP_OK;
 }
 
+auto NvsStorage::PrimaryInput() -> InputModes {
+  uint8_t out = 3;
+  nvs_get_u8(handle_, kKeyPrimaryInput, &out);
+  switch (out) {
+    case static_cast<uint8_t>(InputModes::kButtonsOnly):
+      return InputModes::kButtonsOnly;
+    case static_cast<uint8_t>(InputModes::kButtonsWithWheel):
+      return InputModes::kButtonsWithWheel;
+    case static_cast<uint8_t>(InputModes::kDirectionalWheel):
+      return InputModes::kDirectionalWheel;
+    case static_cast<uint8_t>(InputModes::kRotatingWheel):
+      return InputModes::kRotatingWheel;
+    default:
+      return InputModes::kRotatingWheel;
+  }
+}
+
+auto NvsStorage::PrimaryInput(InputModes mode) -> bool {
+  uint8_t as_int = static_cast<uint8_t>(mode);
+  nvs_set_u8(handle_, kKeyPrimaryInput, as_int);
+  return nvs_commit(handle_) == ESP_OK;
+}
+
 }  // namespace drivers

src/ui/encoder_input.cpp

@@ -40,7 +40,8 @@ EncoderInput::EncoderInput(drivers::IGpios& gpios, drivers::TouchWheel& wheel)
       raw_wheel_(wheel),
       relative_wheel_(std::make_unique<drivers::RelativeWheel>(wheel)),
       scroller_(std::make_unique<Scroller>()),
-      mode_(drivers::NvsStorage::InputModes::kRotatingWheel) {
+      mode_(drivers::NvsStorage::InputModes::kRotatingWheel),
+      is_locked_(false) {
   lv_indev_drv_init(&driver_);
   driver_.type = LV_INDEV_TYPE_ENCODER;
   driver_.read_cb = encoder_read;
@@ -50,6 +51,10 @@ EncoderInput::EncoderInput(drivers::IGpios& gpios, drivers::TouchWheel& wheel)
 }
 
 auto EncoderInput::Read(lv_indev_data_t* data) -> void {
+  if (is_locked_) {
+    return;
+  }
+
   raw_wheel_.Update();
   relative_wheel_->Update();
   // GPIOs updating is handled by system_fsm.

src/ui/include/screen_settings.hpp

@@ -89,7 +89,10 @@ class Appearance : public MenuScreen {
 
 class InputMethod : public MenuScreen {
  public:
-  InputMethod(models::TopBar&);
+  InputMethod(models::TopBar&, drivers::NvsStorage& nvs);
+
+ private:
+  drivers::NvsStorage& nvs_;
 };
 
 class Storage : public MenuScreen {

src/ui/include/ui_events.hpp

@@ -36,6 +36,8 @@ struct IndexSelected : tinyfsm::Event {
   database::IndexInfo index;
 };
 
+struct ControlSchemeChanged : tinyfsm::Event {};
+
 struct BackPressed : tinyfsm::Event {};
 struct ShowNowPlaying : tinyfsm::Event {};
 struct ShowSettingsPage : tinyfsm::Event {

src/ui/include/ui_fsm.hpp

@@ -74,6 +74,7 @@ class UiState : public tinyfsm::Fsm<UiState> {
     sCurrentModal.reset();
   }
   virtual void react(const internal::OnboardingNavigate&) {}
+  void react(const internal::ControlSchemeChanged&);
 
   virtual void react(const system_fsm::DisplayReady&) {}
   virtual void react(const system_fsm::BootComplete&) {}

src/ui/screen_settings.cpp

@@ -422,19 +422,40 @@ auto Appearance::CommitBrightness() -> void {
   nvs_.ScreenBrightness(current_brightness_);
 }
 
-InputMethod::InputMethod(models::TopBar& bar)
-    : MenuScreen(bar, "Input Method") {
-  lv_obj_t* wheel_label = lv_label_create(content_);
-  lv_label_set_text(wheel_label, "What does the wheel do?");
-  lv_obj_t* wheel_dropdown = lv_dropdown_create(content_);
-  lv_dropdown_set_options(wheel_dropdown, "Scroll\nDirectional\nBig Button");
-  lv_group_add_obj(group_, wheel_dropdown);
-
-  lv_obj_t* buttons_label = lv_label_create(content_);
-  lv_label_set_text(buttons_label, "What do the buttons do?");
-  lv_obj_t* buttons_dropdown = lv_dropdown_create(content_);
-  lv_dropdown_set_options(buttons_dropdown, "Volume\nScroll");
-  lv_group_add_obj(group_, buttons_dropdown);
+InputMethod::InputMethod(models::TopBar& bar, drivers::NvsStorage& nvs)
+    : MenuScreen(bar, "Input Method"), nvs_(nvs) {
+  lv_obj_t* primary_label = lv_label_create(content_);
+  lv_label_set_text(primary_label, "Control scheme");
+  lv_obj_t* primary_dropdown = lv_dropdown_create(content_);
+  lv_dropdown_set_options(
+      primary_dropdown,
+      "Side buttons only\nButtons and touch\nD-Pad\nClickwheel");
+  lv_group_add_obj(group_, primary_dropdown);
+
+  lv_dropdown_set_selected(primary_dropdown,
+                           static_cast<uint16_t>(nvs.PrimaryInput()));
+
+  lv_bind(primary_dropdown, LV_EVENT_VALUE_CHANGED, [this](lv_obj_t* obj) {
+    drivers::NvsStorage::InputModes mode;
+    switch (lv_dropdown_get_selected(obj)) {
+      case 0:
+        mode = drivers::NvsStorage::InputModes::kButtonsOnly;
+        break;
+      case 1:
+        mode = drivers::NvsStorage::InputModes::kButtonsWithWheel;
+        break;
+      case 2:
+        mode = drivers::NvsStorage::InputModes::kDirectionalWheel;
+        break;
+      case 3:
+        mode = drivers::NvsStorage::InputModes::kRotatingWheel;
+        break;
+      default:
+        return;
+    }
+    nvs_.PrimaryInput(mode);
+    events::Ui().Dispatch(internal::ControlSchemeChanged{});
+  });
 }
 
 Storage::Storage(models::TopBar& bar) : MenuScreen(bar, "Storage") {

src/ui/ui_fsm.cpp

@@ -114,6 +114,13 @@ void UiState::react(const audio::QueueUpdate&) {
   sPlaybackModel.upcoming_tracks.set(queue.GetUpcoming(10));
 }
 
+void UiState::react(const internal::ControlSchemeChanged&) {
+  if (!sInput) {
+    return;
+  }
+  sInput->mode(sServices->nvs().PrimaryInput());
+}
+
 namespace states {
 
 void Splash::exit() {
@@ -138,6 +145,7 @@ void Splash::react(const system_fsm::BootComplete& ev) {
   auto touchwheel = sServices->touchwheel();
   if (touchwheel) {
     sInput = std::make_shared<EncoderInput>(sServices->gpios(), **touchwheel);
+    sInput->mode(sServices->nvs().PrimaryInput());
     sTask->input(sInput);
   } else {
     ESP_LOGE(kTag, "no input devices initialised!");
@@ -252,7 +260,7 @@ void Browse::react(const internal::ShowSettingsPage& ev) {
           new screens::Appearance(sTopBarModel, sServices->nvs(), *sDisplay));
       break;
     case internal::ShowSettingsPage::Page::kInput:
-      screen.reset(new screens::InputMethod(sTopBarModel));
+      screen.reset(new screens::InputMethod(sTopBarModel, sServices->nvs()));
       break;
     case internal::ShowSettingsPage::Page::kStorage:
       screen.reset(new screens::Storage(sTopBarModel));