use classes for ui

src/main.cpp

@@ -28,7 +28,9 @@ void setup()
   lv_i18n_set_locale("de-DE");
 
   lv_begin();
-  ui_LaunchScreen_open();
+
+  LaunchScreen launchScreen;
+  launchScreen.show();
 }
 
 void loop()

src/ui/launch_screen.cpp

@@ -16,25 +16,30 @@
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //
 //----------------------------------------------------------------------------
-#include "ui/launch_screen.h"
+#include "launch_screen.h"
 
 #include <lvgl.h>
 #include "lv_i18n/lv_i18n.h"
 
-void ui_LaunchScreen_open()
+lv_obj_t *screen;
+
+LaunchScreen::LaunchScreen()
 {
-    auto ui_SplashScreen = lv_obj_create(NULL);
+    screen = lv_obj_create(NULL);
-    lv_obj_clear_flag(ui_SplashScreen, LV_OBJ_FLAG_SCROLLABLE);
+    lv_obj_clear_flag(screen, LV_OBJ_FLAG_SCROLLABLE);
-    lv_obj_set_style_bg_color(ui_SplashScreen, lv_color_make(0x78, 0x94, 0xa7), 0);
+    lv_obj_set_style_bg_color(screen, lv_color_make(0x78, 0x94, 0xa7), 0);
 
     LV_IMG_DECLARE(os_railway_icon_lvgl);
-    auto *img = lv_img_create(ui_SplashScreen);
+    auto *logo = lv_img_create(screen);
-    lv_img_set_src(img, &os_railway_icon_lvgl);
+    lv_img_set_src(logo, &os_railway_icon_lvgl);
-    lv_obj_align(img, LV_ALIGN_CENTER, 0, 0);
+    lv_obj_align(logo, LV_ALIGN_CENTER, 0, 0);
 
-    auto *label = lv_label_create(ui_SplashScreen);
+    auto *label = lv_label_create(screen);
     lv_label_set_text(label, _("appName"));
     lv_obj_align(label, LV_ALIGN_BOTTOM_MID, 0, -25);
-
+}
-    lv_disp_load_scr(ui_SplashScreen);
+
+void LaunchScreen::show()
+{
+    lv_disp_load_scr(screen);
 }

src/ui/launch_screen.h

@@ -18,4 +18,9 @@
 //----------------------------------------------------------------------------
 #pragma once
 
-void ui_LaunchScreen_open();
+class LaunchScreen
+{
+public:
+    LaunchScreen();
+    void show();
+};