Add Beta Localization Support for HDZERO Goggles Firmware

.devcontainer/Dockerfile

@@ -2,4 +2,5 @@ FROM --platform=linux/x86_64 mcr.microsoft.com/devcontainers/base:ubuntu
 
 RUN export DEBIAN_FRONTEND=noninteractive && \
     apt-get update && \
-    apt-get -y install --no-install-recommends cmake build-essential ninja-build libsdl2-dev
+    apt-get -y install --no-install-recommends cmake build-essential ninja-build libsdl2-dev nodejs npm && \
+    npm i lv_i18n -g

.gitignore

@@ -14,3 +14,6 @@ media.tar.gz
 /tmp
 /.vscode/settings.json
 .DS_Store
+/node_modules
+package-lock.json
+package.json

.vscode/settings.json

@@ -1,3 +1,8 @@
 {
-    "editor.formatOnSave": true
+    "editor.formatOnSave": true,
+    "files.associations": {
+        "ui_osd_element_pos.h": "c",
+        "msp_displayport.h": "c",
+        "complex": "c"
+    }
 }

CMakeLists.txt

@@ -65,6 +65,7 @@ file(GLOB SRC_FILES_CORE   "src/core/*.c" "src/core/*.h")
 file(GLOB SRC_FILES_DRIVER "src/driver/*.c" "src/driver/*.h")
 file(GLOB SRC_FILES_FONTS  "src/fonts/*.c" "src/fonts/*.h")
 file(GLOB SRC_FILES_IMAGE  "src/image/*.c" "src/image/*.h")
+file(GLOB SRC_FIELS_LV_I18N "src/lv_i18n/*.c" "src/lv_i18n/*.h")
 file(GLOB SRC_FILES_UI   "src/ui/*.c" "src/ui/*.h")
 file(GLOB SRC_FILES_BMI   "src/bmi270/*.c" "src/bmi270/*.h")
 file(GLOB SRC_FILES_UTIL "src/util/*.c" "src/util/*.h")
@@ -76,6 +77,7 @@ set(SRC_FILES
 	${SRC_FILES_DRIVER}
 	${SRC_FILES_FONTS}
 	${SRC_FILES_IMAGE}
+	${SRC_FIELS_LV_I18N}
 	${SRC_FILES_UI}
 	${SRC_FILES_BMI}
 	${SRC_FILES_UTIL}

lib/lvgl/lv_conf.h

@@ -391,10 +391,10 @@
 /*Optionally declare custom fonts here.
  *You can use these fonts as default font too and they will be available globally.
  *E.g. #define LV_FONT_CUSTOM_DECLARE   LV_FONT_DECLARE(my_font_1) LV_FONT_DECLARE(my_font_2)*/
-#define LV_FONT_CUSTOM_DECLARE
+#define LV_FONT_CUSTOM_DECLARE  LV_FONT_DECLARE(montserrat_16) LV_FONT_DECLARE(montserrat_18) LV_FONT_DECLARE(montserrat_20)LV_FONT_DECLARE(montserrat_26) LV_FONT_DECLARE(montserrat_40)
 
 /*Always set a default font*/
-#define LV_FONT_DEFAULT &lv_font_montserrat_26
+#define LV_FONT_DEFAULT &montserrat_26
 
 /*Enable handling large font and/or fonts with a lot of characters.
  *The limit depends on the font size, font face and bpp.

mkapp/app/setting.ini

@@ -64,6 +64,9 @@ sta_passwd=MyPassword
 [osd]
 embedded_mode=0
 
+[language]
+lang=en-US
+
 #### OSD elements ####
 # top fan speed
 element_topfan_speed_show=true

src/core/main.c

@@ -40,6 +40,7 @@ SDL_mutex *global_sdl_mutex;
 #include "driver/mcp3021.h"
 #include "driver/oled.h"
 #include "driver/rtc.h"
+#include "lv_i18n/lv_i18n.h"
 #include "ui/page_power.h"
 #include "ui/page_scannow.h"
 #include "ui/page_source.h"
@@ -140,6 +141,9 @@ void lvgl_init() {
                                               false, LV_FONT_DEFAULT);
     lv_disp_set_theme(dispp, theme);
     lv_obj_set_style_bg_color(lv_scr_act(), lv_color_make(64, 64, 64), 0);
+
+    lv_i18n_init(lv_i18n_language_pack);
+    lv_i18n_set_locale(g_setting.language.lang);
 }
 
 int main(int argc, char *argv[]) {

src/core/settings.c

@@ -218,6 +218,9 @@ const setting_t g_setting_defaults = {
         .hdzero_band = SETTING_SOURCES_HDZERO_BAND_RACEBAND,
         .hdzero_bw = SETTING_SOURCES_HDZERO_BW_WIDE,
     },
+    .language = {
+        .lang = "en-GB",
+    },
 };
 
 int settings_put_osd_element_shown(bool show, char *config_name) {
@@ -449,6 +452,9 @@ void settings_load(void) {
     ini_gets("wifi", "root_pw", g_setting_defaults.wifi.root_pw, g_setting.wifi.root_pw, WIFI_PASSWD_MAX, SETTING_INI);
     g_setting.wifi.ssh = settings_get_bool("wifi", "ssh", g_setting_defaults.wifi.ssh);
 
+    // language
+    ini_gets("language", "lang", g_setting_defaults.language.lang, g_setting.language.lang, 6, SETTING_INI);
+
     //  no dial under video mode
     g_setting.ease.no_dial = fs_file_exists(NO_DIAL_FILE);
 

src/core/settings.h

@@ -222,6 +222,10 @@ typedef struct {
     bool ssh;
 } wifi_t;
 
+typedef struct {
+    char lang[6];
+} setting_language_t;
+
 typedef struct {
     uint8_t no_dial; // 1=disable turning channels under video mode
 } ease_use_t;
@@ -270,6 +274,7 @@ typedef struct {
     setting_head_tracker_t ht;
     setting_elrs_t elrs;
     wifi_t wifi;
+    setting_language_t language;
     setting_osd_t osd;
     setting_clock_t clock;
     setting_inputs_t inputs;