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feat(label): implement api to bind a translation tag to a label (#8948)

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Co-authored-by: Liam Howatt <30486941+liamHowatt@users.noreply.github.com>
This commit is contained in:
André Costa
2025-09-26 13:07:28 +02:00
committed by GitHub
parent 48a1ea968a
commit 2f40b98040
14 changed files with 276 additions and 61 deletions
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examples/widgets/label/index.rst
+7
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@@ -34,3 +34,10 @@ Monospace font
.. lv_example:: widgets/label/lv_example_label_6
:language: c
Assign a translation tag to a label
-----------------------------------
.. lv_example:: widgets/label/lv_example_label_7
:language: c
examples/widgets/label/lv_example_label_7.c
+59
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@@ -0,0 +1,59 @@
#include "../../lv_examples.h"
#if LV_USE_TRANSLATION && LV_USE_DROPDOWN && LV_USE_LABEL && LV_BUILD_EXAMPLES
static const char * tags[] = {"tiger", "lion", "rabbit", "elephant", NULL};
static const char * languages[] = {"English", "Deutsch", "Español", NULL};
static void add_static_translations(void)
{
static const char * 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 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);
}
/**
* Use a translation tag in labels
*/
void lv_example_label_7(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);
lv_translation_set_language("English");
/* 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());
lv_label_set_translation_tag(label, tags[i]);
}
}
#endif /*LV_USE_TRANSLATION && LV_USE_DROPDOWN && LV_USE_LABEL && LV_BUILD_EXAMPLES*/
examples/widgets/lv_example_widgets.h
+1
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@@ -98,6 +98,7 @@ void lv_example_label_3(void);
void lv_example_label_4(void);
void lv_example_label_5(void);
void lv_example_label_6(void);
void lv_example_label_7(void);
void lv_example_led_1(void);