loader info

src/display/display_setup.cpp

@@ -135,7 +135,7 @@ void display_init() {
 
     lv_init();
     lv_display_gfx = lv_display_create(Theme::SCREEN_W, Theme::SCREEN_H);
-    lv_display_set_color_format(lv_display_gfx, LV_COLOR_FORMAT_RGB565_SWAPPED);
+    lv_display_set_color_format(lv_display_gfx, LV_COLOR_FORMAT_RGB565);
     lv_display_set_buffers(lv_display_gfx, lvgl_buf1, lvgl_buf2,
                            sizeof(lv_color_t) * LVGL_BUF_PIXELS,
                            LV_DISPLAY_RENDER_MODE_PARTIAL);

src/ui/home_screen.cpp

@@ -152,10 +152,14 @@ void homeScreen_refresh(Screen &) {
     updateWidgets();
 }
 
-void homeScreen_tick(Screen &) {
+void homeScreen_tick(Screen &s) {
     if (lastFetchMs == 0 || millis() - lastFetchMs >= REFRESH_INTERVAL_MS) {
+        s.showLoading(true);
+        lv_timer_handler();
         doFetch();
         updateWidgets();
+        s.showLoading(false);
+        lv_timer_handler();
     }
 }
 

src/ui/mvg_screen.cpp

@@ -95,10 +95,14 @@ void mvgScreen_refresh(Screen &) {
     buildList();
 }
 
-void mvgScreen_tick(Screen &) {
+void mvgScreen_tick(Screen &s) {
     if (lastFetchMs == 0 || millis() - lastFetchMs >= REFRESH_INTERVAL_MS) {
+        s.showLoading(true);
+        lv_timer_handler();
         doFetch();
         buildList();
+        s.showLoading(false);
+        lv_timer_handler();
     }
 }
 

src/ui/screen_base.h

@@ -1,5 +1,6 @@
 #pragma once
 #include <lvgl.h>
+#include <theme.h>
 
 enum class ScreenId {
     HOME,
@@ -14,13 +15,11 @@ enum class ScreenId {
 // every loop iteration for periodic refresh checks.
 struct Screen {
     lv_obj_t *root = nullptr;
+    lv_obj_t *loadingLabel = nullptr;
     bool created = false;
 
-    // Build the screen object tree (hidden). Called once at startup.
     void (*create_fn)(Screen &) = nullptr;
-    // Re-fetch data and update widgets.
     void (*refresh_fn)(Screen &) = nullptr;
-    // Per-loop tick: check refresh timers / inactivity.
     void (*tick_fn)(Screen &) = nullptr;
 
     void create() {
@@ -32,14 +31,40 @@ struct Screen {
         lv_obj_set_style_pad_all(root, 0, 0);
         lv_obj_clear_flag(root, LV_OBJ_FLAG_SCROLLABLE);
         create_fn(*this);
+
+        loadingLabel = lv_label_create(root);
+        lv_label_set_text(loadingLabel, LV_SYMBOL_REFRESH " Lädt...");
+        lv_obj_set_style_text_color(loadingLabel, Theme::text(), 0);
+        lv_obj_set_style_bg_color(loadingLabel, Theme::bg(), 0);
+        lv_obj_set_style_bg_opa(loadingLabel, LV_OPA_COVER, 0);
+        lv_obj_set_style_radius(loadingLabel, 8, 0);
+        lv_obj_set_style_pad_all(loadingLabel, 8, 0);
+        lv_obj_set_align(loadingLabel, LV_ALIGN_BOTTOM_RIGHT);
+        lv_obj_align(loadingLabel, LV_ALIGN_BOTTOM_RIGHT, -12, -12);
+        lv_obj_add_flag(loadingLabel, LV_OBJ_FLAG_HIDDEN);
+
         created = true;
     }
 
+    void showLoading(bool visible) {
+        if (!loadingLabel) return;
+        if (visible) {
+            lv_obj_clear_flag(loadingLabel, LV_OBJ_FLAG_HIDDEN);
+            lv_obj_move_foreground(loadingLabel);
+        } else {
+            lv_obj_add_flag(loadingLabel, LV_OBJ_FLAG_HIDDEN);
+        }
+    }
+
     void show() {
         if (!created) create();
         lv_screen_load(root);
         lv_indev_reset(NULL, root);
+        showLoading(true);
+        lv_timer_handler();
         refresh();
+        showLoading(false);
+        lv_timer_handler();
     }
 
     void hide() {}