Added "Saving Changes" screen when reboot is needed

src/graphics/niche/InkHUD/Applets/System/Logo/LogoApplet.cpp

@@ -155,6 +155,18 @@ void InkHUD::LogoApplet::onShutdown()
     // This is then drawn by InkHUD::Events::onShutdown, with a blocking FULL update, after InkHUD's flash write is complete
 }
 
+void InkHUD::LogoApplet::onApplyingChanges()
+{
+    bringToForeground();
+
+    textLeft = "";
+    textRight = "";
+    textTitle = "Applying changes";
+    fontTitle = fontSmall;
+
+    inkhud->forceUpdate(Drivers::EInk::FAST, false);
+}
+
 void InkHUD::LogoApplet::onReboot()
 {
     bringToForeground();

src/graphics/niche/InkHUD/Applets/System/Logo/LogoApplet.h

@@ -26,6 +26,7 @@ class LogoApplet : public SystemApplet, public concurrency::OSThread
     void onBackground() override;
     void onShutdown() override;
     void onReboot() override;
+    void onApplyingChanges();
 
   protected:
     int32_t runOnce() override;

src/graphics/niche/InkHUD/Applets/System/Menu/MenuApplet.cpp

@@ -210,7 +210,8 @@ static void applyLoRaRegion(meshtastic_Config_LoRaConfig_RegionCode region)
         sprintf(moduleConfig.mqtt.root, "%s/%s", default_mqtt_root, myRegion->name);
         changes |= SEGMENT_MODULECONFIG;
     }
-
+    // Notify UI that changes are being applied
+    InkHUD::InkHUD::getInstance()->notifyApplyingChanges();
     service->reloadConfig(changes);
 
     rebootAtMsec = millis() + DEFAULT_REBOOT_SECONDS * 1000;
@@ -227,6 +228,9 @@ static void applyDeviceRole(meshtastic_Config_DeviceConfig_Role role)
 
     service->reloadConfig(SEGMENT_CONFIG);
 
+    // Notify UI that changes are being applied
+    InkHUD::InkHUD::getInstance()->notifyApplyingChanges();
+
     rebootAtMsec = millis() + DEFAULT_REBOOT_SECONDS * 1000;
 }
 
@@ -241,6 +245,9 @@ static void applyLoRaPreset(meshtastic_Config_LoRaConfig_ModemPreset preset)
     nodeDB->saveToDisk(SEGMENT_CONFIG);
     service->reloadConfig(SEGMENT_CONFIG);
 
+    // Notify UI that changes are being applied
+    InkHUD::InkHUD::getInstance()->notifyApplyingChanges();
+
     rebootAtMsec = millis() + DEFAULT_REBOOT_SECONDS * 1000;
 }
 
@@ -442,6 +449,7 @@ void InkHUD::MenuApplet::execute(MenuItem item)
         config.network.wifi_enabled = false;
         config.bluetooth.enabled = true;
         nodeDB->saveToDisk(SEGMENT_CONFIG);
+        InkHUD::InkHUD::getInstance()->notifyApplyingChanges();
         rebootAtMsec = millis() + 2000;
         break;
 
@@ -450,6 +458,7 @@ void InkHUD::MenuApplet::execute(MenuItem item)
     case TOGGLE_POWER_SAVE:
         config.power.is_power_saving = !config.power.is_power_saving;
         nodeDB->saveToDisk(SEGMENT_CONFIG);
+        InkHUD::InkHUD::getInstance()->notifyApplyingChanges();
         rebootAtMsec = millis() + DEFAULT_REBOOT_SECONDS * 1000;
         break;
 
@@ -462,6 +471,7 @@ void InkHUD::MenuApplet::execute(MenuItem item)
         }
 
         nodeDB->saveToDisk(SEGMENT_CONFIG);
+        InkHUD::InkHUD::getInstance()->notifyApplyingChanges();
         rebootAtMsec = millis() + DEFAULT_REBOOT_SECONDS * 1000;
         break;
 #endif
@@ -486,6 +496,7 @@ void InkHUD::MenuApplet::execute(MenuItem item)
         }
 
         nodeDB->saveToDisk(SEGMENT_CONFIG);
+        InkHUD::InkHUD::getInstance()->notifyApplyingChanges();
         rebootAtMsec = millis() + DEFAULT_REBOOT_SECONDS * 1000;
         break;
 

src/graphics/niche/InkHUD/Events.cpp

@@ -121,6 +121,15 @@ int InkHUD::Events::beforeDeepSleep(void *unused)
     return 0; // We agree: deep sleep now
 }
 
+// Display an intermediate screen while configuration changes are applied
+void InkHUD::Events::applyingChanges()
+{
+    // Bring the logo applet forward with a temporary message
+    for (SystemApplet *sa : inkhud->systemApplets) {
+        sa->onApplyingChanges();
+    }
+}
+
 // Callback for rebootObserver
 // Same as shutdown, without drawing the logoApplet
 // Makes sure we don't lose message history / InkHUD config

src/graphics/niche/InkHUD/Events.h

@@ -29,6 +29,7 @@ class Events
 
     void onButtonShort(); // User button: short press
     void onButtonLong();  // User button: long press
+    void applyingChanges();
 
     int beforeDeepSleep(void *unused);                             // Prepare for shutdown
     int beforeReboot(void *unused);                                // Prepare for reboot

src/graphics/niche/InkHUD/InkHUD.cpp

@@ -53,6 +53,14 @@ void InkHUD::InkHUD::addApplet(const char *name, Applet *a, bool defaultActive,
     windowManager->addApplet(name, a, defaultActive, defaultAutoshow, onTile);
 }
 
+
+void InkHUD::InkHUD::notifyApplyingChanges()
+{
+    if (events) {
+        events->applyingChanges();
+    }
+}
+
 // Start InkHUD!
 // Call this only after you have configured InkHUD
 void InkHUD::InkHUD::begin()

src/graphics/niche/InkHUD/InkHUD.h

@@ -47,6 +47,7 @@ class InkHUD
     void setDriver(Drivers::EInk *driver);
     void setDisplayResilience(uint8_t fastPerFull = 5, float stressMultiplier = 2.0);
     void addApplet(const char *name, Applet *a, bool defaultActive = false, bool defaultAutoshow = false, uint8_t onTile = -1);
+    void notifyApplyingChanges();
 
     void begin();
 

src/graphics/niche/InkHUD/SystemApplet.h

@@ -27,6 +27,7 @@ class SystemApplet : public Applet
     bool lockRequests = false;  // - prevent other applets from triggering display updates
 
     virtual void onReboot() { onShutdown(); } // - handle reboot specially
+    virtual void onApplyingChanges() {}
 
     // Other system applets may take precedence over our own system applet though
     // The order an applet is passed to WindowManager::addSystemApplet determines this hierarchy (added earlier = higher rank)