rg_gui: Allow targets to override default language and font

Maybe I should put all default values for all settings together and allow targets to override any of them?

Author: ducalex

components/retro-go/config.h

@@ -158,3 +158,11 @@
 #ifndef RG_SCREEN_VISIBLE_AREA
 #define RG_SCREEN_VISIBLE_AREA {0, 0, 0, 0}
 #endif
+
+#ifndef RG_LANG_DEFAULT
+#define RG_LANG_DEFAULT RG_LANG_EN
+#endif
+
+#ifndef RG_FONT_DEFAULT
+#define RG_FONT_DEFAULT RG_FONT_VERA_11
+#endif

components/retro-go/fonts/fonts.h

@@ -20,8 +20,6 @@ enum {
     RG_FONT_VERA_11,
     RG_FONT_VERA_14,
     RG_FONT_MAX,
-
-    RG_FONT_DEFAULT = RG_FONT_VERA_11,
 };
 
 static const rg_font_t *fonts[RG_FONT_MAX] = {

components/retro-go/rg_gui.c

@@ -109,8 +109,8 @@ void rg_gui_init(void)
     gui.margins = (__typeof__(gui.margins))RG_SCREEN_SAFE_AREA;
     gui.draw_buffer = get_draw_buffer(gui.screen_width, 18, C_BLACK);
     gui.show_clock = rg_settings_get_boolean(NS_GLOBAL, SETTING_CLOCK, false);
-    if (!rg_gui_set_language_id(rg_settings_get_number(NS_GLOBAL, SETTING_LANGUAGE, RG_LANG_EN)))
-        rg_gui_set_language_id(RG_LANG_EN);
+    if (!rg_gui_set_language_id(rg_settings_get_number(NS_GLOBAL, SETTING_LANGUAGE, RG_LANG_DEFAULT)))
+        rg_gui_set_language_id(0);
     if (!rg_gui_set_font(rg_settings_get_number(NS_GLOBAL, SETTING_FONTTYPE, RG_FONT_DEFAULT)))
         rg_gui_set_font(0);
     rg_gui_set_theme(rg_settings_get_string(NS_GLOBAL, SETTING_THEME, NULL));