加入国际化（翻译）

Power_Pico/User/GUI/common/lv_i18n.h

@@ -0,0 +1,85 @@
+#ifndef LV_I18N_H
+#define LV_I18N_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <string.h>
+
+typedef enum {
+    LV_I18N_PLURAL_TYPE_ZERO,
+    LV_I18N_PLURAL_TYPE_ONE,
+    LV_I18N_PLURAL_TYPE_TWO,
+    LV_I18N_PLURAL_TYPE_FEW,
+    LV_I18N_PLURAL_TYPE_MANY,
+    LV_I18N_PLURAL_TYPE_OTHER,
+    _LV_I18N_PLURAL_TYPE_NUM,
+} lv_i18n_plural_type_t;
+
+typedef struct {
+    const char * msg_id;
+    const char * translation;
+} lv_i18n_phrase_t;
+
+typedef struct {
+    const char * locale_name;
+    lv_i18n_phrase_t * singulars;
+    lv_i18n_phrase_t * plurals[_LV_I18N_PLURAL_TYPE_NUM];
+    uint8_t (*locale_plural_fn)(int32_t num);
+} lv_i18n_lang_t;
+
+// Null-terminated list of languages. First one used as default.
+typedef const lv_i18n_lang_t * lv_i18n_language_pack_t;
+
+
+extern const lv_i18n_language_pack_t lv_i18n_language_pack[];
+
+
+/**
+ * Set the languages for internationalization
+ * @param langs pointer to the array of languages. (Last element has to be `NULL`)
+ */
+int lv_i18n_init(const lv_i18n_language_pack_t * langs);
+
+/**
+ * Change the localization (language)
+ * @param l_name name of the translation locale to use. E.g. "en_GB"
+ */
+int lv_i18n_set_locale(const char * l_name);
+
+/**
+ * Get the translation from a message ID
+ * @param msg_id message ID
+ * @return the translation of `msg_id` on the set local
+ */
+const char * lv_i18n_get_text(const char * msg_id);
+
+/**
+ * Get the translation from a message ID and apply the language's plural rule to get correct form
+ * @param msg_id message ID
+ * @param num an integer to select the correct plural form
+ * @return the translation of `msg_id` on the set local
+ */
+const char * lv_i18n_get_text_plural(const char * msg_id, int32_t num);
+
+/**
+ * Get the name of the currently used localization.
+ * @return name of the currently used localization. E.g. "en_GB"
+ */
+const char * lv_i18n_get_current_locale(void);
+
+
+void __lv_i18n_reset(void);
+
+
+#define _(text) lv_i18n_get_text(text)
+#define _p(text, num) lv_i18n_get_text_plural(text, num)
+
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /*LV_LANG_H*/