acid-drop/lib/lvgl/examples/widgets/keyboard/lv_example_keyboard_1.c

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2024-05-23 22:42:03 +00:00
#include "../../lv_examples.h"
#if LV_USE_KEYBOARD && LV_BUILD_EXAMPLES
static void ta_event_cb(lv_event_t * e)
{
lv_event_code_t code = lv_event_get_code(e);
lv_obj_t * ta = lv_event_get_target(e);
lv_obj_t * kb = lv_event_get_user_data(e);
if(code == LV_EVENT_FOCUSED) {
lv_keyboard_set_textarea(kb, ta);
lv_obj_clear_flag(kb, LV_OBJ_FLAG_HIDDEN);
}
if(code == LV_EVENT_DEFOCUSED) {
lv_keyboard_set_textarea(kb, NULL);
lv_obj_add_flag(kb, LV_OBJ_FLAG_HIDDEN);
}
}
void lv_example_keyboard_1(void)
{
/*Create a keyboard to use it with an of the text areas*/
lv_obj_t * kb = lv_keyboard_create(lv_scr_act());
/*Create a text area. The keyboard will write here*/
lv_obj_t * ta;
ta = lv_textarea_create(lv_scr_act());
lv_obj_align(ta, LV_ALIGN_TOP_LEFT, 10, 10);
lv_obj_add_event_cb(ta, ta_event_cb, LV_EVENT_ALL, kb);
lv_textarea_set_placeholder_text(ta, "Hello");
lv_obj_set_size(ta, 140, 80);
ta = lv_textarea_create(lv_scr_act());
lv_obj_align(ta, LV_ALIGN_TOP_RIGHT, -10, 10);
lv_obj_add_event_cb(ta, ta_event_cb, LV_EVENT_ALL, kb);
lv_obj_set_size(ta, 140, 80);
lv_keyboard_set_textarea(kb, ta);
}
#endif