First commit with working display

managed_components/lvgl__lvgl/examples/others/translation/index.rst

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+Simple translation example
+---------------------------
+
+.. lv_example:: others/translation/lv_example_translation_1
+  :language: c
+
+Dynamic language selection
+--------------------------
+
+.. lv_example:: others/translation/lv_example_translation_2
+  :language: c
+
+

managed_components/lvgl__lvgl/examples/others/translation/lv_example_translation.h

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+/**
+ * @file lv_example_translation.h
+ *
+ */
+
+#ifndef LV_EXAMPLE_TRANSLATION_H
+#define LV_EXAMPLE_TRANSLATION_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+void lv_example_translation_1(void);
+void lv_example_translation_2(void);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_EXAMPLE_TRANSLATION_H*/

managed_components/lvgl__lvgl/examples/others/translation/lv_example_translation_1.c

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+#include "../../lv_examples.h"
+#if LV_USE_TRANSLATION && LV_BUILD_EXAMPLES
+
+static void add_static(void)
+{
+    /* Arrays are defined `const` to place them in program space instead of RAM. */
+    static const char * const languages[] = {"en", "de", "es", NULL};
+    static const char * const tags[] = {"tiger", "lion", "rabbit", "elephant", NULL};
+    static const char * const translations[] = {
+        "The Tiger", "Der Tiger", "El Tigre",
+        "The Lion", "Der Löwe", "El León",
+        "The Rabbit", "Das Kaninchen", "El Conejo",
+        "The Elephant", "Der Elefant", "El Elefante",
+    };
+
+    lv_translation_add_static(languages, tags, translations);
+}
+
+static void add_dynamic(void)
+{
+    lv_translation_pack_t * pack = lv_translation_add_dynamic();
+    lv_translation_add_language(pack, "en");
+    lv_translation_add_language(pack, "de");
+
+    lv_translation_tag_dsc_t * tag;
+    tag = lv_translation_add_tag(pack, "table");
+    lv_translation_set_tag_translation(pack, tag, 0, "It's a table");
+    lv_translation_set_tag_translation(pack, tag, 1, "Das is ein Tish");
+
+    tag = lv_translation_add_tag(pack, "chair");
+    lv_translation_set_tag_translation(pack, tag, 0, "It's a chair");
+    lv_translation_set_tag_translation(pack, tag, 1, "Das ist ein Stuhl");
+}
+
+/**
+ * Create and use translations
+ */
+void lv_example_translation_1(void)
+{
+    add_static();
+    add_dynamic();
+
+    lv_translation_set_language("de");
+
+    lv_obj_t * label;
+
+    label = lv_label_create(lv_screen_active());
+    lv_label_set_text(label, lv_tr("tiger"));
+
+    label = lv_label_create(lv_screen_active());
+    lv_label_set_text(label, lv_tr("chair"));
+    lv_obj_set_y(label, 50);
+}
+
+#endif /*LV_USE_TRANSLATION && LV_BUILD_EXAMPLES*/

managed_components/lvgl__lvgl/examples/others/translation/lv_example_translation_2.c

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+#include "../../lv_examples.h"
+
+#if LV_USE_TRANSLATION && LV_USE_DROPDOWN && LV_USE_LABEL && LV_BUILD_EXAMPLES
+
+/* Arrays are defined `const` to place them in program space instead of RAM. */
+static const char * const tags[] = {"tiger", "lion", "rabbit", "elephant", NULL};
+static const char * const languages[] = {"English", "Deutsch", "Español", NULL};
+
+static void add_static_translations(void)
+{
+    static const char * const translations[] = {
+        "The Tiger",    "Der Tiger",     "El Tigre",
+        "The Lion",     "Der Löwe",      "El León",
+        "The Rabbit",   "Das Kaninchen", "El Conejo",
+        "The Elephant", "Der Elefant",   "El Elefante",
+    };
+
+    lv_translation_add_static(languages, tags, translations);
+}
+
+static void on_language_change(lv_event_t * e)
+{
+    lv_obj_t * label      = lv_event_get_target_obj(e);
+    const char * tag      = (const char *) lv_event_get_user_data(e);
+    /* You can get the new language with `lv_event_get_param`*/
+    const char * language = (const char *) lv_event_get_param(e);
+    LV_UNUSED(language);
+
+    lv_label_set_text(label, lv_tr(tag));
+}
+
+static void language_change_cb(lv_event_t * e)
+{
+    static char selected_lang[20];
+
+    lv_obj_t * dropdown = lv_event_get_target_obj(e);
+    lv_dropdown_get_selected_str(dropdown, selected_lang, sizeof(selected_lang));
+    lv_translation_set_language(selected_lang);
+}
+
+/**
+ * Change label text when the translation language changes
+ */
+void lv_example_translation_2(void)
+{
+    lv_obj_set_flex_flow(lv_screen_active(), LV_FLEX_FLOW_COLUMN);
+    lv_obj_set_flex_align(lv_screen_active(), LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
+
+    add_static_translations();
+    const size_t tag_count = sizeof(tags) / sizeof(tags[0]) - 1;
+    const size_t lang_count = sizeof(languages) / sizeof(languages[0]) - 1;
+
+    /* Create a dropdown to be able to select the language */
+    lv_obj_t * language_dropdown = lv_dropdown_create(lv_screen_active());
+    lv_dropdown_clear_options(language_dropdown);
+
+    for(size_t i = 0; i < lang_count; ++i) {
+        lv_dropdown_add_option(language_dropdown, languages[i], i);
+    }
+
+    lv_obj_add_event_cb(language_dropdown, language_change_cb, LV_EVENT_VALUE_CHANGED, NULL);
+
+    /* Create a label for each tag */
+    for(size_t i = 0; i < tag_count; ++i) {
+        lv_obj_t * label = lv_label_create(lv_screen_active());
+
+        /* Bind to the language change event so that we can change the label when the language changes */
+        lv_obj_add_event_cb(label, on_language_change, LV_EVENT_TRANSLATION_LANGUAGE_CHANGED, (void *)tags[i]);
+    }
+
+    lv_translation_set_language("English");
+}
+
+#endif /*LV_USE_TRANSLATION && LV_USE_DROPDOWN && LV_USE_LABEL && LV_BUILD_EXAMPLES*/