/**
  * @file lv_ta.c
  *
  */
 
 /*********************
  *      INCLUDES
  *********************/
 #include "lv_textarea.h"
 #if LV_USE_TEXTAREA != 0
 
 #include <string.h>
 #include "../misc/lv_assert.h"
 #include "../core/lv_group.h"
 #include "../core/lv_refr.h"
 #include "../core/lv_indev.h"
 #include "../draw/lv_draw.h"
 #include "../misc/lv_anim.h"
 #include "../misc/lv_txt.h"
 #include "../misc/lv_math.h"
 
 /*********************
  *      DEFINES
  *********************/
 #define MY_CLASS &lv_textarea_class
 
 /*Test configuration*/
 #ifndef LV_TEXTAREA_DEF_CURSOR_BLINK_TIME
     #define LV_TEXTAREA_DEF_CURSOR_BLINK_TIME 400 /*ms*/
 #endif
 
 #ifndef LV_TEXTAREA_DEF_PWD_SHOW_TIME
     #define LV_TEXTAREA_DEF_PWD_SHOW_TIME 1500 /*ms*/
 #endif
 
 #define LV_TEXTAREA_PWD_BULLET_UNICODE      0x2022
 #define IGNORE_KERNING                      '\0'
 
 /**********************
  *      TYPEDEFS
  **********************/
 
 /**********************
  *  STATIC PROTOTYPES
  **********************/
 static void lv_textarea_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
 static void lv_textarea_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
 static void lv_textarea_event(const lv_obj_class_t * class_p, lv_event_t * e);
 static void label_event_cb(lv_event_t * e);
 static void cursor_blink_anim_cb(void * obj, int32_t show);
 static void pwd_char_hider_anim(void * obj, int32_t x);
 static void pwd_char_hider_anim_ready(lv_anim_t * a);
 static void pwd_char_hider(lv_obj_t * obj);
 static bool char_is_accepted(lv_obj_t * obj, uint32_t c);
 static void start_cursor_blink(lv_obj_t * obj);
 static void refr_cursor_area(lv_obj_t * obj);
 static void update_cursor_position_on_click(lv_event_t * e);
 static lv_res_t insert_handler(lv_obj_t * obj, const char * txt);
 static void draw_placeholder(lv_event_t * e);
 static void draw_cursor(lv_event_t * e);
 static void auto_hide_characters(lv_obj_t * obj);
 static inline bool is_valid_but_non_printable_char(const uint32_t letter);
 
 /**********************
  *  STATIC VARIABLES
  **********************/
 const lv_obj_class_t lv_textarea_class = {
     .constructor_cb = lv_textarea_constructor,
     .destructor_cb = lv_textarea_destructor,
     .event_cb = lv_textarea_event,
     .group_def = LV_OBJ_CLASS_GROUP_DEF_TRUE,
     .width_def = LV_DPI_DEF * 2,
     .height_def = LV_DPI_DEF,
     .instance_size = sizeof(lv_textarea_t),
     .base_class = &lv_obj_class
 };
 
 static const char * ta_insert_replace;
 
 /**********************
  *      MACROS
  **********************/
 
 /**********************
  *   GLOBAL FUNCTIONS
  **********************/
 
 lv_obj_t * lv_textarea_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin");
     lv_obj_t * obj = lv_obj_class_create_obj(MY_CLASS, parent);
     lv_obj_class_init_obj(obj);
     return obj;
 }
 
 /*======================
  * Add/remove functions
  *=====================*/
 
 void lv_textarea_add_char(lv_obj_t * obj, uint32_t c)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
 
     if(ta->one_line && (c == '\n' || c == '\r')) {
         LV_LOG_INFO("Text area: line break ignored in one-line mode");
         return;
     }
 
     uint32_t u32_buf[2];
     u32_buf[0] = c;
     u32_buf[1] = 0;
 
     const char * letter_buf = (char *)&u32_buf;
 
 #if LV_BIG_ENDIAN_SYSTEM
     if(c != 0) while(*letter_buf == 0) ++letter_buf;
 #endif
 
     lv_res_t res = insert_handler(obj, letter_buf);
     if(res != LV_RES_OK) return;
 
     uint32_t c_uni = _lv_txt_encoded_next((const char *)&c, NULL);
 
     if(char_is_accepted(obj, c_uni) == false) {
         LV_LOG_INFO("Character is not accepted by the text area (too long text or not in the accepted list)");
         return;
     }
 
     if(ta->pwd_mode) pwd_char_hider(obj); /*Make sure all the current text contains only '*'*/
 
     /*If the textarea is empty, invalidate it to hide the placeholder*/
     if(ta->placeholder_txt) {
         const char * txt = lv_label_get_text(ta->label);
         if(txt[0] == '\0') lv_obj_invalidate(obj);
     }
 
     lv_label_ins_text(ta->label, ta->cursor.pos, letter_buf); /*Insert the character*/
     lv_textarea_clear_selection(obj); /*Clear selection*/
 
     if(ta->pwd_mode) {
         /*+2: the new char + \0*/
         size_t realloc_size = strlen(ta->pwd_tmp) + strlen(letter_buf) + 1;
         ta->pwd_tmp = lv_mem_realloc(ta->pwd_tmp, realloc_size);
         LV_ASSERT_MALLOC(ta->pwd_tmp);
         if(ta->pwd_tmp == NULL) return;
 
         _lv_txt_ins(ta->pwd_tmp, ta->cursor.pos, (const char *)letter_buf);
 
         /*Auto hide characters*/
         auto_hide_characters(obj);
     }
 
     /*Move the cursor after the new character*/
     lv_textarea_set_cursor_pos(obj, lv_textarea_get_cursor_pos(obj) + 1);
 
     lv_event_send(obj, LV_EVENT_VALUE_CHANGED, NULL);
 }
 
 void lv_textarea_add_text(lv_obj_t * obj, const char * txt)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
     LV_ASSERT_NULL(txt);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
 
     if(ta->pwd_mode) pwd_char_hider(obj); /*Make sure all the current text contains only '*'*/
 
     /*Add the character one-by-one if not all characters are accepted or there is character limit.*/
     if(lv_textarea_get_accepted_chars(obj) || lv_textarea_get_max_length(obj)) {
         uint32_t i = 0;
         while(txt[i] != '\0') {
             uint32_t c = _lv_txt_encoded_next(txt, &i);
             lv_textarea_add_char(obj, _lv_txt_unicode_to_encoded(c));
         }
         return;
     }
 
     lv_res_t res = insert_handler(obj, txt);
     if(res != LV_RES_OK) return;
 
     /*If the textarea is empty, invalidate it to hide the placeholder*/
     if(ta->placeholder_txt) {
         const char * txt_act = lv_label_get_text(ta->label);
         if(txt_act[0] == '\0') lv_obj_invalidate(obj);
     }
 
     /*Insert the text*/
     lv_label_ins_text(ta->label, ta->cursor.pos, txt);
     lv_textarea_clear_selection(obj);
 
     if(ta->pwd_mode) {
         size_t realloc_size = strlen(ta->pwd_tmp) + strlen(txt) + 1;
         ta->pwd_tmp = lv_mem_realloc(ta->pwd_tmp, realloc_size);
         LV_ASSERT_MALLOC(ta->pwd_tmp);
         if(ta->pwd_tmp == NULL) return;
 
         _lv_txt_ins(ta->pwd_tmp, ta->cursor.pos, txt);
 
         /*Auto hide characters*/
         auto_hide_characters(obj);
     }
 
     /*Move the cursor after the new text*/
     lv_textarea_set_cursor_pos(obj, lv_textarea_get_cursor_pos(obj) + _lv_txt_get_encoded_length(txt));
 
     lv_event_send(obj, LV_EVENT_VALUE_CHANGED, NULL);
 }
 
 void lv_textarea_del_char(lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     uint32_t cur_pos  = ta->cursor.pos;
 
     if(cur_pos == 0) return;
 
     char del_buf[2]   = {LV_KEY_DEL, '\0'};
 
     lv_res_t res = insert_handler(obj, del_buf);
     if(res != LV_RES_OK) return;
 
     char * label_txt = lv_label_get_text(ta->label);
 
     /*Delete a character*/
     _lv_txt_cut(label_txt, ta->cursor.pos - 1, 1);
 
     /*Refresh the label*/
     lv_label_set_text(ta->label, label_txt);
     lv_textarea_clear_selection(obj);
 
     /*If the textarea became empty, invalidate it to hide the placeholder*/
     if(ta->placeholder_txt) {
         const char * txt = lv_label_get_text(ta->label);
         if(txt[0] == '\0') lv_obj_invalidate(obj);
     }
 
     if(ta->pwd_mode) {
         _lv_txt_cut(ta->pwd_tmp, ta->cursor.pos - 1, 1);
 
         ta->pwd_tmp = lv_mem_realloc(ta->pwd_tmp, strlen(ta->pwd_tmp) + 1);
         LV_ASSERT_MALLOC(ta->pwd_tmp);
         if(ta->pwd_tmp == NULL) return;
     }
 
     /*Move the cursor to the place of the deleted character*/
     lv_textarea_set_cursor_pos(obj, ta->cursor.pos - 1);
 
     lv_event_send(obj, LV_EVENT_VALUE_CHANGED, NULL);
 
 }
 
 void lv_textarea_del_char_forward(lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     uint32_t cp = lv_textarea_get_cursor_pos(obj);
     lv_textarea_set_cursor_pos(obj, cp + 1);
     if(cp != lv_textarea_get_cursor_pos(obj)) lv_textarea_del_char(obj);
 }
 
 /*=====================
  * Setter functions
  *====================*/
 
 void lv_textarea_set_text(lv_obj_t * obj, const char * txt)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
     LV_ASSERT_NULL(txt);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
 
     /*Clear the existing selection*/
     lv_textarea_clear_selection(obj);
 
     /*Add the character one-by-one if not all characters are accepted or there is character limit.*/
     if(lv_textarea_get_accepted_chars(obj) || lv_textarea_get_max_length(obj)) {
         lv_label_set_text(ta->label, "");
         lv_textarea_set_cursor_pos(obj, LV_TEXTAREA_CURSOR_LAST);
         if(ta->pwd_mode) {
             ta->pwd_tmp[0] = '\0'; /*Clear the password too*/
         }
         uint32_t i = 0;
         while(txt[i] != '\0') {
             uint32_t c = _lv_txt_encoded_next(txt, &i);
             lv_textarea_add_char(obj, _lv_txt_unicode_to_encoded(c));
         }
     }
     else {
         lv_label_set_text(ta->label, txt);
         lv_textarea_set_cursor_pos(obj, LV_TEXTAREA_CURSOR_LAST);
     }
 
     /*If the textarea is empty, invalidate it to hide the placeholder*/
     if(ta->placeholder_txt) {
         const char * txt_act = lv_label_get_text(ta->label);
         if(txt_act[0] == '\0') lv_obj_invalidate(obj);
     }
 
     if(ta->pwd_mode) {
         ta->pwd_tmp = lv_mem_realloc(ta->pwd_tmp, strlen(txt) + 1);
         LV_ASSERT_MALLOC(ta->pwd_tmp);
         if(ta->pwd_tmp == NULL) return;
         strcpy(ta->pwd_tmp, txt);
 
         /*Auto hide characters*/
         auto_hide_characters(obj);
     }
 
     lv_event_send(obj, LV_EVENT_VALUE_CHANGED, NULL);
 }
 
 void lv_textarea_set_placeholder_text(lv_obj_t * obj, const char * txt)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
     LV_ASSERT_NULL(txt);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
 
     size_t txt_len = strlen(txt);
     if((txt_len == 0) && (ta->placeholder_txt)) {
         lv_mem_free(ta->placeholder_txt);
         ta->placeholder_txt = NULL;
     }
     else {
         /*Allocate memory for the placeholder_txt text*/
         /*NOTE: Using special realloc behavior, malloc-like when data_p is NULL*/
         ta->placeholder_txt = lv_mem_realloc(ta->placeholder_txt, txt_len + 1);
         LV_ASSERT_MALLOC(ta->placeholder_txt);
         if(ta->placeholder_txt == NULL) {
             LV_LOG_ERROR("lv_textarea_set_placeholder_text: couldn't allocate memory for placeholder");
             return;
         }
 
         strcpy(ta->placeholder_txt, txt);
         ta->placeholder_txt[txt_len] = '\0';
     }
 
     lv_obj_invalidate(obj);
 }
 
 void lv_textarea_set_cursor_pos(lv_obj_t * obj, int32_t pos)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     if((uint32_t)ta->cursor.pos == (uint32_t)pos) return;
 
     uint32_t len = _lv_txt_get_encoded_length(lv_label_get_text(ta->label));
 
     if(pos < 0) pos = len + pos;
 
     if(pos > (int32_t)len || pos == LV_TEXTAREA_CURSOR_LAST) pos = len;
 
     ta->cursor.pos = pos;
 
     /*Position the label to make the cursor visible*/
     lv_obj_update_layout(obj);
 
     lv_point_t cur_pos;
     const lv_font_t * font = lv_obj_get_style_text_font(obj, LV_PART_MAIN);
     lv_label_get_letter_pos(ta->label, pos, &cur_pos);
 
     /*The text area needs to have it's final size to see if the cursor is out of the area or not*/
 
     /*Check the top*/
     lv_coord_t font_h = lv_font_get_line_height(font);
     if(cur_pos.y < lv_obj_get_scroll_top(obj)) {
         lv_obj_scroll_to_y(obj, cur_pos.y, LV_ANIM_ON);
     }
     /*Check the bottom*/
     lv_coord_t h = lv_obj_get_content_height(obj);
     if(cur_pos.y + font_h - lv_obj_get_scroll_top(obj) > h) {
         lv_obj_scroll_to_y(obj, cur_pos.y - h + font_h, LV_ANIM_ON);
     }
 
     /*Check the left*/
     if(cur_pos.x < lv_obj_get_scroll_left(obj)) {
         lv_obj_scroll_to_x(obj, cur_pos.x, LV_ANIM_ON);
     }
     /*Check the right*/
     lv_coord_t w = lv_obj_get_content_width(obj);
     if(cur_pos.x + font_h - lv_obj_get_scroll_left(obj) > w) {
         lv_obj_scroll_to_x(obj, cur_pos.x - w + font_h, LV_ANIM_ON);
     }
 
     ta->cursor.valid_x = cur_pos.x;
 
     start_cursor_blink(obj);
 
     refr_cursor_area(obj);
 }
 
 void lv_textarea_set_cursor_click_pos(lv_obj_t * obj, bool en)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     ta->cursor.click_pos = en ? 1U : 0U;
 }
 
 void lv_textarea_set_password_mode(lv_obj_t * obj, bool en)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     if(ta->pwd_mode == en) return;
 
     ta->pwd_mode = en ? 1U : 0U;
     /*Pwd mode is now enabled*/
     if(en) {
         char * txt = lv_label_get_text(ta->label);
         size_t len = strlen(txt);
 
         ta->pwd_tmp = lv_mem_alloc(len + 1);
         LV_ASSERT_MALLOC(ta->pwd_tmp);
         if(ta->pwd_tmp == NULL) return;
 
         strcpy(ta->pwd_tmp, txt);
 
         pwd_char_hider(obj);
 
         lv_textarea_clear_selection(obj);
     }
     /*Pwd mode is now disabled*/
     else {
         lv_textarea_clear_selection(obj);
         lv_label_set_text(ta->label, ta->pwd_tmp);
         lv_mem_free(ta->pwd_tmp);
         ta->pwd_tmp = NULL;
     }
 
     refr_cursor_area(obj);
 }
 
 void lv_textarea_set_one_line(lv_obj_t * obj, bool en)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     if(ta->one_line == en) return;
 
     ta->one_line = en ? 1U : 0U;
     lv_coord_t width = en ? LV_SIZE_CONTENT : lv_pct(100);
     lv_coord_t min_width_value = en ? lv_pct(100) : 0;
 
     lv_obj_set_width(ta->label, width);
     lv_obj_set_style_min_width(ta->label, min_width_value, 0);
 
     if(en) {
         lv_obj_set_height(obj, LV_SIZE_CONTENT);
     }
     else {
         lv_obj_remove_local_style_prop(obj, LV_STYLE_HEIGHT, LV_PART_MAIN);
     }
 
     lv_obj_scroll_to(obj, 0, 0, LV_ANIM_OFF);
 }
 
 void lv_textarea_set_accepted_chars(lv_obj_t * obj, const char * list)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
 
     ta->accepted_chars = list;
 }
 
 void lv_textarea_set_max_length(lv_obj_t * obj, uint32_t num)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
 
     ta->max_length = num;
 }
 
 void lv_textarea_set_insert_replace(lv_obj_t * obj, const char * txt)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     LV_UNUSED(obj);
     ta_insert_replace = txt;
 }
 
 void lv_textarea_set_text_selection(lv_obj_t * obj, bool en)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
 #if LV_LABEL_TEXT_SELECTION
     lv_textarea_t * ta = (lv_textarea_t *)obj;
 
     ta->text_sel_en = en;
 
     if(!en) lv_textarea_clear_selection(obj);
 #else
     LV_UNUSED(obj); /*Unused*/
     LV_UNUSED(en);  /*Unused*/
 #endif
 }
 
 void lv_textarea_set_password_show_time(lv_obj_t * obj, uint16_t time)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     ta->pwd_show_time = time;
 }
 
 void lv_textarea_set_align(lv_obj_t * obj, lv_text_align_t align)
 {
     LV_LOG_WARN("Deprecated: use the normal text_align style property instead");
     lv_obj_set_style_text_align(obj, align, 0);
 
     switch(align) {
         default:
         case LV_TEXT_ALIGN_LEFT:
             lv_obj_align(lv_textarea_get_label(obj), LV_ALIGN_TOP_LEFT, 0, 0);
             break;
         case LV_TEXT_ALIGN_RIGHT:
             lv_obj_align(lv_textarea_get_label(obj), LV_ALIGN_TOP_RIGHT, 0, 0);
             break;
         case LV_TEXT_ALIGN_CENTER:
             lv_obj_align(lv_textarea_get_label(obj), LV_ALIGN_TOP_MID, 0, 0);
             break;
     }
 }
 
 /*=====================
  * Getter functions
  *====================*/
 
 const char * lv_textarea_get_text(const lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
 
     const char * txt;
     if(ta->pwd_mode == 0) {
         txt = lv_label_get_text(ta->label);
     }
     else {
         txt = ta->pwd_tmp;
     }
 
     return txt;
 }
 
 const char * lv_textarea_get_placeholder_text(lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     if(ta->placeholder_txt) return ta->placeholder_txt;
     else return "";
 }
 
 lv_obj_t * lv_textarea_get_label(const lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     return ta->label;
 }
 
 uint32_t lv_textarea_get_cursor_pos(const lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     return ta->cursor.pos;
 }
 
 bool lv_textarea_get_cursor_click_pos(lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     return ta->cursor.click_pos ? true : false;
 }
 
 bool lv_textarea_get_password_mode(const lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     return ta->pwd_mode == 1U;
 }
 
 bool lv_textarea_get_one_line(const lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     return ta->one_line == 1U;
 }
 
 const char * lv_textarea_get_accepted_chars(lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
 
     return ta->accepted_chars;
 }
 
 uint32_t lv_textarea_get_max_length(lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     return ta->max_length;
 }
 
 bool lv_textarea_text_is_selected(const lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
 #if LV_LABEL_TEXT_SELECTION
     lv_textarea_t * ta = (lv_textarea_t *)obj;
 
     if((lv_label_get_text_selection_start(ta->label) != LV_DRAW_LABEL_NO_TXT_SEL ||
         lv_label_get_text_selection_end(ta->label) != LV_DRAW_LABEL_NO_TXT_SEL)) {
         return true;
     }
     else {
         return false;
     }
 #else
     LV_UNUSED(obj); /*Unused*/
     return false;
 #endif
 }
 
 bool lv_textarea_get_text_selection(lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
 #if LV_LABEL_TEXT_SELECTION
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     return ta->text_sel_en;
 #else
     LV_UNUSED(obj); /*Unused*/
     return false;
 #endif
 }
 
 uint16_t lv_textarea_get_password_show_time(lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
 
     return ta->pwd_show_time;
 }
 
 /*=====================
  * Other functions
  *====================*/
 
 void lv_textarea_clear_selection(lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
 #if LV_LABEL_TEXT_SELECTION
     lv_textarea_t * ta = (lv_textarea_t *)obj;
 
     if(lv_label_get_text_selection_start(ta->label) != LV_DRAW_LABEL_NO_TXT_SEL ||
        lv_label_get_text_selection_end(ta->label) != LV_DRAW_LABEL_NO_TXT_SEL) {
         lv_label_set_text_sel_start(ta->label, LV_DRAW_LABEL_NO_TXT_SEL);
         lv_label_set_text_sel_end(ta->label, LV_DRAW_LABEL_NO_TXT_SEL);
     }
 #else
     LV_UNUSED(obj); /*Unused*/
 #endif
 }
 
 void lv_textarea_cursor_right(lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     uint32_t cp = lv_textarea_get_cursor_pos(obj);
     cp++;
     lv_textarea_set_cursor_pos(obj, cp);
 }
 
 void lv_textarea_cursor_left(lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     uint32_t cp = lv_textarea_get_cursor_pos(obj);
     if(cp > 0) {
         cp--;
         lv_textarea_set_cursor_pos(obj, cp);
     }
 }
 
 void lv_textarea_cursor_down(lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     lv_point_t pos;
 
     /*Get the position of the current letter*/
     lv_label_get_letter_pos(ta->label, lv_textarea_get_cursor_pos(obj), &pos);
 
     /*Increment the y with one line and keep the valid x*/
 
     lv_coord_t line_space = lv_obj_get_style_text_line_space(obj, LV_PART_MAIN);
     const lv_font_t * font = lv_obj_get_style_text_font(obj, LV_PART_MAIN);
     lv_coord_t font_h              = lv_font_get_line_height(font);
     pos.y += font_h + line_space + 1;
     pos.x = ta->cursor.valid_x;
 
     /*Do not go below the last line*/
     if(pos.y < lv_obj_get_height(ta->label)) {
         /*Get the letter index on the new cursor position and set it*/
         uint32_t new_cur_pos = lv_label_get_letter_on(ta->label, &pos);
 
         lv_coord_t cur_valid_x_tmp = ta->cursor.valid_x; /*Cursor position set overwrites the valid position*/
         lv_textarea_set_cursor_pos(obj, new_cur_pos);
         ta->cursor.valid_x = cur_valid_x_tmp;
     }
 }
 
 void lv_textarea_cursor_up(lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, MY_CLASS);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     lv_point_t pos;
 
     /*Get the position of the current letter*/
     lv_label_get_letter_pos(ta->label, lv_textarea_get_cursor_pos(obj), &pos);
 
     /*Decrement the y with one line and keep the valid x*/
     lv_coord_t line_space = lv_obj_get_style_text_line_space(obj, LV_PART_MAIN);
     const lv_font_t * font = lv_obj_get_style_text_font(obj, LV_PART_MAIN);
     lv_coord_t font_h              = lv_font_get_line_height(font);
     pos.y -= font_h + line_space - 1;
     pos.x = ta->cursor.valid_x;
 
     /*Get the letter index on the new cursor position and set it*/
     uint32_t new_cur_pos       = lv_label_get_letter_on(ta->label, &pos);
     lv_coord_t cur_valid_x_tmp = ta->cursor.valid_x; /*Cursor position set overwrites the valid position*/
     lv_textarea_set_cursor_pos(obj, new_cur_pos);
     ta->cursor.valid_x = cur_valid_x_tmp;
 }
 
 /**********************
  *   STATIC FUNCTIONS
  **********************/
 
 static void lv_textarea_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
 {
     LV_UNUSED(class_p);
     LV_TRACE_OBJ_CREATE("begin");
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
 
     ta->pwd_mode          = 0;
     ta->pwd_tmp           = NULL;
     ta->pwd_show_time     = LV_TEXTAREA_DEF_PWD_SHOW_TIME;
     ta->accepted_chars    = NULL;
     ta->max_length        = 0;
     ta->cursor.show      = 1;
     /*It will be set to zero later (with zero value lv_textarea_set_cursor_pos(obj, 0); wouldn't do anything as there is no difference)*/
     ta->cursor.pos        = 1;
     ta->cursor.click_pos  = 1;
     ta->cursor.valid_x    = 0;
     ta->one_line          = 0;
 #if LV_LABEL_TEXT_SELECTION
     ta->text_sel_en = 0;
 #endif
     ta->label       = NULL;
     ta->placeholder_txt = NULL;
 
     ta->label = lv_label_create(obj);
     lv_obj_set_width(ta->label, lv_pct(100));
     lv_label_set_text(ta->label, "");
     lv_obj_add_event_cb(ta->label, label_event_cb, LV_EVENT_ALL, NULL);
     lv_obj_add_flag(obj, LV_OBJ_FLAG_SCROLL_ON_FOCUS);
     lv_textarea_set_cursor_pos(obj, 0);
 
     start_cursor_blink(obj);
 
     LV_TRACE_OBJ_CREATE("finished");
 }
 
 static void lv_textarea_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
 {
     LV_UNUSED(class_p);
 
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     if(ta->pwd_tmp != NULL) {
         lv_mem_free(ta->pwd_tmp);
         ta->pwd_tmp = NULL;
     }
     if(ta->placeholder_txt != NULL) {
         lv_mem_free(ta->placeholder_txt);
         ta->placeholder_txt = NULL;
     }
 }
 
 static void lv_textarea_event(const lv_obj_class_t * class_p, lv_event_t * e)
 {
     LV_UNUSED(class_p);
 
     lv_res_t res;
     /*Call the ancestor's event handler*/
     res = lv_obj_event_base(MY_CLASS, e);
     if(res != LV_RES_OK) return;
 
     lv_event_code_t code = lv_event_get_code(e);
     lv_obj_t * obj = lv_event_get_target(e);
 
     if(code == LV_EVENT_FOCUSED) {
         start_cursor_blink(obj);
     }
     else if(code == LV_EVENT_KEY) {
         uint32_t c = *((uint32_t *)lv_event_get_param(e)); /*uint32_t because can be UTF-8*/
         if(c == LV_KEY_RIGHT)
             lv_textarea_cursor_right(obj);
         else if(c == LV_KEY_LEFT)
             lv_textarea_cursor_left(obj);
         else if(c == LV_KEY_UP)
             lv_textarea_cursor_up(obj);
         else if(c == LV_KEY_DOWN)
             lv_textarea_cursor_down(obj);
         else if(c == LV_KEY_BACKSPACE)
             lv_textarea_del_char(obj);
         else if(c == LV_KEY_DEL)
             lv_textarea_del_char_forward(obj);
         else if(c == LV_KEY_HOME)
             lv_textarea_set_cursor_pos(obj, 0);
         else if(c == LV_KEY_END)
             lv_textarea_set_cursor_pos(obj, LV_TEXTAREA_CURSOR_LAST);
         else if(c == LV_KEY_ENTER && lv_textarea_get_one_line(obj))
             lv_event_send(obj, LV_EVENT_READY, NULL);
         else {
             lv_textarea_add_char(obj, c);
         }
     }
     else if(code == LV_EVENT_PRESSED || code == LV_EVENT_PRESSING || code == LV_EVENT_PRESS_LOST ||
             code == LV_EVENT_RELEASED) {
         update_cursor_position_on_click(e);
     }
     else if(code == LV_EVENT_DRAW_MAIN) {
         draw_placeholder(e);
     }
     else if(code == LV_EVENT_DRAW_POST) {
         draw_cursor(e);
     }
 }
 
 static void label_event_cb(lv_event_t * e)
 {
     lv_event_code_t code = lv_event_get_code(e);
     lv_obj_t * label = lv_event_get_target(e);
     lv_obj_t * ta = lv_obj_get_parent(label);
 
     if(code == LV_EVENT_STYLE_CHANGED || code == LV_EVENT_SIZE_CHANGED) {
         lv_label_set_text(label, NULL);
         refr_cursor_area(ta);
         start_cursor_blink(ta);
     }
 }
 
 
 
 /**
  * Called to blink the cursor
  * @param ta pointer to a text area
  * @param hide 1: hide the cursor, 0: show it
  */
 static void cursor_blink_anim_cb(void * obj, int32_t show)
 {
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     if(show != ta->cursor.show) {
         ta->cursor.show = show ? 1U : 0U;
         lv_area_t area_tmp;
         lv_area_copy(&area_tmp, &ta->cursor.area);
         area_tmp.x1 += ta->label->coords.x1;
         area_tmp.y1 += ta->label->coords.y1;
         area_tmp.x2 += ta->label->coords.x1;
         area_tmp.y2 += ta->label->coords.y1;
         lv_obj_invalidate_area(obj, &area_tmp);
     }
 }
 
 /**
  * Dummy function to animate char hiding in pwd mode.
  * Does nothing, but a function is required in car hiding anim.
  * (pwd_char_hider callback do the real job)
  * @param ta unused
  * @param x unused
  */
 static void pwd_char_hider_anim(void * obj, int32_t x)
 {
     LV_UNUSED(obj);
     LV_UNUSED(x);
 }
 
 /**
  * Call when an animation is ready to convert all characters to '*'
  * @param a pointer to the animation
  */
 static void pwd_char_hider_anim_ready(lv_anim_t * a)
 {
     lv_obj_t * obj = a->var;
     pwd_char_hider(obj);
 }
 
 /**
  * Hide all characters (convert them to '*')
  * @param ta pointer to text area object
  */
 static void pwd_char_hider(lv_obj_t * obj)
 {
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     if(ta->pwd_mode == 0) {
         return;
     }
 
     /* When ta->label is empty we get 0 back */
     char * txt = lv_label_get_text(ta->label);
     uint32_t enc_len = _lv_txt_get_encoded_length(txt);
     if(enc_len == 0) return;
 
     /*If the textarea's font has "bullet" character use it else fallback to "*"*/
     lv_font_glyph_dsc_t g;
     const char * bullet = "*";
 
     const lv_font_t * font = lv_obj_get_style_text_font(obj, LV_PART_MAIN);
     if(lv_font_get_glyph_dsc(font, &g, LV_TEXTAREA_PWD_BULLET_UNICODE, 0)) bullet = LV_SYMBOL_BULLET;
 
     const size_t bullet_len = strlen(bullet);
     char * txt_tmp = lv_mem_buf_get(enc_len * bullet_len + 1);
 
     uint32_t i;
     for(i = 0; i < enc_len; i++) {
         lv_memcpy(&txt_tmp[i * bullet_len], bullet, bullet_len);
     }
     txt_tmp[i * bullet_len] = '\0';
 
     lv_label_set_text(ta->label, txt_tmp);
     lv_mem_buf_release(txt_tmp);
 
     refr_cursor_area(obj);
 }
 
 /**
  * Test a unicode character if it is accepted or not. Checks max length and accepted char list.
  * @param ta pointer to a test area object
  * @param c a unicode character
  * @return true: accepted; false: rejected
  */
 static bool char_is_accepted(lv_obj_t * obj, uint32_t c)
 {
     lv_textarea_t * ta = (lv_textarea_t *)obj;
 
     /*Too many characters?*/
     if(ta->max_length > 0 && _lv_txt_get_encoded_length(lv_textarea_get_text(obj)) >= ta->max_length) {
         return false;
     }
 
     if(ta->accepted_chars == NULL || ta->accepted_chars[0] == '\0') return true;
     /*Accepted character?*/
     uint32_t i = 0;
 
     while(ta->accepted_chars[i] != '\0') {
         uint32_t a = _lv_txt_encoded_next(ta->accepted_chars, &i);
         if(a == c) return true; /*Accepted*/
     }
 
     return false; /*The character wasn't in the list*/
 }
 
 static void start_cursor_blink(lv_obj_t * obj)
 {
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     uint32_t blink_time = lv_obj_get_style_anim_time(obj, LV_PART_CURSOR);
     if(blink_time == 0) {
         lv_anim_del(obj, cursor_blink_anim_cb);
         ta->cursor.show = 1;
     }
     else {
         lv_anim_t a;
         lv_anim_init(&a);
         lv_anim_set_var(&a, ta);
         lv_anim_set_exec_cb(&a, cursor_blink_anim_cb);
         lv_anim_set_time(&a, blink_time);
         lv_anim_set_playback_time(&a, blink_time);
         lv_anim_set_values(&a, 1, 0);
         lv_anim_set_path_cb(&a, lv_anim_path_step);
         lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);
         lv_anim_start(&a);
     }
 }
 
 static void refr_cursor_area(lv_obj_t * obj)
 {
     lv_textarea_t * ta = (lv_textarea_t *)obj;
 
     const lv_font_t * font = lv_obj_get_style_text_font(obj, LV_PART_MAIN);
     lv_coord_t line_space = lv_obj_get_style_text_line_space(obj, LV_PART_MAIN);
 
     uint32_t cur_pos = lv_textarea_get_cursor_pos(obj);
     const char * txt = lv_label_get_text(ta->label);
 
     uint32_t byte_pos = _lv_txt_encoded_get_byte_id(txt, cur_pos);
     uint32_t letter = _lv_txt_encoded_next(&txt[byte_pos], NULL);
 
     /* Letter height and width */
     const lv_coord_t letter_h = lv_font_get_line_height(font);
     /*Set letter_w (set not 0 on non printable but valid chars)*/
     uint32_t letter_space = letter;
     if(is_valid_but_non_printable_char(letter)) {
         letter_space = ' ';
     }
     lv_coord_t letter_w = lv_font_get_glyph_width(font, letter_space, IGNORE_KERNING);
 
     lv_point_t letter_pos;
     lv_label_get_letter_pos(ta->label, cur_pos, &letter_pos);
 
     lv_text_align_t align = lv_obj_calculate_style_text_align(ta->label, LV_PART_MAIN, lv_label_get_text(ta->label));
 
     /*If the cursor is out of the text (most right) draw it to the next line*/
     if(((letter_pos.x + ta->label->coords.x1) + letter_w > ta->label->coords.x2) &&
        (ta->one_line == 0 && align != LV_TEXT_ALIGN_RIGHT)) {
 
         letter_pos.x = 0;
         letter_pos.y += letter_h + line_space;
 
         if(letter != '\0') {
             byte_pos += _lv_txt_encoded_size(&txt[byte_pos]);
             letter = _lv_txt_encoded_next(&txt[byte_pos], NULL);
         }
 
         uint32_t tmp = letter;
         if(is_valid_but_non_printable_char(letter)) {
             tmp = ' ';
         }
         letter_w = lv_font_get_glyph_width(font, tmp, IGNORE_KERNING);
     }
 
     /*Save the byte position. It is required to draw `LV_CURSOR_BLOCK`*/
     ta->cursor.txt_byte_pos = byte_pos;
 
     /*Calculate the cursor according to its type*/
     lv_coord_t border_width = lv_obj_get_style_border_width(obj, LV_PART_CURSOR);
     lv_coord_t top = lv_obj_get_style_pad_top(obj, LV_PART_CURSOR) + border_width;
     lv_coord_t bottom = lv_obj_get_style_pad_bottom(obj, LV_PART_CURSOR) + border_width;
     lv_coord_t left = lv_obj_get_style_pad_left(obj, LV_PART_CURSOR) + border_width;
     lv_coord_t right = lv_obj_get_style_pad_right(obj, LV_PART_CURSOR) + border_width;
 
     lv_area_t cur_area;
     cur_area.x1 = letter_pos.x - left;
     cur_area.y1 = letter_pos.y - top;
     cur_area.x2 = letter_pos.x + right + letter_w - 1;
     cur_area.y2 = letter_pos.y + bottom + letter_h - 1;
 
     /*Save the new area*/
     lv_area_t area_tmp;
     lv_area_copy(&area_tmp, &ta->cursor.area);
     area_tmp.x1 += ta->label->coords.x1;
     area_tmp.y1 += ta->label->coords.y1;
     area_tmp.x2 += ta->label->coords.x1;
     area_tmp.y2 += ta->label->coords.y1;
     lv_obj_invalidate_area(obj, &area_tmp);
 
     lv_area_copy(&ta->cursor.area, &cur_area);
 
     lv_area_copy(&area_tmp, &ta->cursor.area);
     area_tmp.x1 += ta->label->coords.x1;
     area_tmp.y1 += ta->label->coords.y1;
     area_tmp.x2 += ta->label->coords.x1;
     area_tmp.y2 += ta->label->coords.y1;
     lv_obj_invalidate_area(obj, &area_tmp);
 }
 
 static void update_cursor_position_on_click(lv_event_t * e)
 {
     lv_indev_t * click_source = lv_indev_get_act();
     if(click_source == NULL) return;
 
     lv_obj_t * obj = lv_event_get_target(e);
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     if(ta->cursor.click_pos == 0) return;
 
     if(lv_indev_get_type(click_source) == LV_INDEV_TYPE_KEYPAD ||
        lv_indev_get_type(click_source) == LV_INDEV_TYPE_ENCODER) {
         return;
     }
 
     lv_area_t label_coords;
     lv_obj_get_coords(ta->label, &label_coords);
 
     lv_point_t point_act, vect_act;
     lv_indev_get_point(click_source, &point_act);
     lv_indev_get_vect(click_source, &vect_act);
 
     if(point_act.x < 0 || point_act.y < 0) return; /*Ignore event from keypad*/
     lv_point_t rel_pos;
     rel_pos.x = point_act.x - label_coords.x1;
     rel_pos.y = point_act.y - label_coords.y1;
 
     const lv_event_code_t code = lv_event_get_code(e);
 
     lv_coord_t label_width = lv_obj_get_width(ta->label);
     uint16_t char_id_at_click = 0;
 
 #if LV_LABEL_TEXT_SELECTION
     lv_label_t * label_data = (lv_label_t *)ta->label;
     bool click_outside_label = false;
     /*Check if the click happened on the left side of the area outside the label*/
     if(rel_pos.x < 0) {
         char_id_at_click = 0;
         click_outside_label = true;
     }
     /*Check if the click happened on the right side of the area outside the label*/
     else if(rel_pos.x >= label_width) {
         char_id_at_click = LV_TEXTAREA_CURSOR_LAST;
         click_outside_label = true;
     }
     else {
         char_id_at_click = lv_label_get_letter_on(ta->label, &rel_pos);
         click_outside_label = !lv_label_is_char_under_pos(ta->label, &rel_pos);
     }
 
     if(ta->text_sel_en) {
         if(!ta->text_sel_in_prog && !click_outside_label && code == LV_EVENT_PRESSED) {
             /*Input device just went down. Store the selection start position*/
             ta->sel_start    = char_id_at_click;
             ta->sel_end      = LV_LABEL_TEXT_SELECTION_OFF;
             ta->text_sel_in_prog = 1;
             lv_obj_clear_flag(obj, LV_OBJ_FLAG_SCROLL_CHAIN);
         }
         else if(ta->text_sel_in_prog && code == LV_EVENT_PRESSING) {
             /*Input device may be moving. Store the end position*/
             ta->sel_end = char_id_at_click;
         }
         else if(ta->text_sel_in_prog && (code == LV_EVENT_PRESS_LOST || code == LV_EVENT_RELEASED)) {
             /*Input device is released. Check if anything was selected.*/
             lv_obj_add_flag(obj, LV_OBJ_FLAG_SCROLL_CHAIN);
         }
     }
 
     if(ta->text_sel_in_prog || code == LV_EVENT_PRESSED) lv_textarea_set_cursor_pos(obj, char_id_at_click);
 
     if(ta->text_sel_in_prog) {
         /*If the selected area has changed then update the real values and*/
 
         /*Invalidate the text area.*/
         if(ta->sel_start > ta->sel_end) {
             if(label_data->sel_start != ta->sel_end || label_data->sel_end != ta->sel_start) {
                 label_data->sel_start = ta->sel_end;
                 label_data->sel_end   = ta->sel_start;
                 lv_obj_invalidate(obj);
             }
         }
         else if(ta->sel_start < ta->sel_end) {
             if(label_data->sel_start != ta->sel_start || label_data->sel_end != ta->sel_end) {
                 label_data->sel_start = ta->sel_start;
                 label_data->sel_end   = ta->sel_end;
                 lv_obj_invalidate(obj);
             }
         }
         else {
             if(label_data->sel_start != LV_DRAW_LABEL_NO_TXT_SEL || label_data->sel_end != LV_DRAW_LABEL_NO_TXT_SEL) {
                 label_data->sel_start = LV_DRAW_LABEL_NO_TXT_SEL;
                 label_data->sel_end   = LV_DRAW_LABEL_NO_TXT_SEL;
                 lv_obj_invalidate(obj);
             }
         }
         /*Finish selection if necessary*/
         if(code == LV_EVENT_PRESS_LOST || code == LV_EVENT_RELEASED) {
             ta->text_sel_in_prog = 0;
         }
     }
 #else
     /*Check if the click happened on the left side of the area outside the label*/
     if(rel_pos.x < 0) {
         char_id_at_click = 0;
     }
     /*Check if the click happened on the right side of the area outside the label*/
     else if(rel_pos.x >= label_width) {
         char_id_at_click = LV_TEXTAREA_CURSOR_LAST;
     }
     else {
         char_id_at_click = lv_label_get_letter_on(ta->label, &rel_pos);
     }
 
     if(code == LV_EVENT_PRESSED) lv_textarea_set_cursor_pos(obj, char_id_at_click);
 #endif
 }
 
 /* Returns LV_RES_OK when no operation were performed
  * Returns LV_RES_INV when a user defined text was inserted */
 static lv_res_t insert_handler(lv_obj_t * obj, const char * txt)
 {
     ta_insert_replace = NULL;
     lv_event_send(obj, LV_EVENT_INSERT, (char *)txt);
 
     /* Drop txt if insert replace is set to '\0' */
     if(ta_insert_replace && ta_insert_replace[0] == '\0')
         return LV_RES_INV;
 
     if(ta_insert_replace) {
         /*Add the replaced text directly it's different from the original*/
         if(strcmp(ta_insert_replace, txt)) {
             lv_textarea_add_text(obj, ta_insert_replace);
             return LV_RES_INV;
         }
     }
 
     return LV_RES_OK;
 }
 
 static void draw_placeholder(lv_event_t * e)
 {
     lv_obj_t * obj = lv_event_get_target(e);
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     lv_draw_ctx_t * draw_ctx = lv_event_get_draw_ctx(e);
     const char * txt = lv_label_get_text(ta->label);
 
     /*Draw the place holder*/
     if(txt[0] == '\0' && ta->placeholder_txt && ta->placeholder_txt[0] != 0) {
         lv_draw_label_dsc_t ph_dsc;
         lv_draw_label_dsc_init(&ph_dsc);
         lv_obj_init_draw_label_dsc(obj, LV_PART_TEXTAREA_PLACEHOLDER, &ph_dsc);
 
         if(ta->one_line) ph_dsc.flag |= LV_TEXT_FLAG_EXPAND;
 
         lv_coord_t left = lv_obj_get_style_pad_left(obj, LV_PART_MAIN);
         lv_coord_t top = lv_obj_get_style_pad_top(obj, LV_PART_MAIN);
         lv_coord_t border_width = lv_obj_get_style_border_width(obj, LV_PART_MAIN);
         lv_area_t ph_coords;
         lv_area_copy(&ph_coords, &obj->coords);
         lv_area_move(&ph_coords, left + border_width, top + border_width);
         lv_draw_label(draw_ctx, &ph_dsc, &ph_coords, ta->placeholder_txt, NULL);
     }
 }
 
 static void draw_cursor(lv_event_t * e)
 {
     lv_obj_t * obj = lv_event_get_target(e);
     lv_textarea_t * ta = (lv_textarea_t *)obj;
     lv_draw_ctx_t * draw_ctx = lv_event_get_draw_ctx(e);
     const char * txt = lv_label_get_text(ta->label);
 
     if(ta->cursor.show == 0) return;
 
     lv_draw_rect_dsc_t cur_dsc;
     lv_draw_rect_dsc_init(&cur_dsc);
     lv_obj_init_draw_rect_dsc(obj, LV_PART_CURSOR, &cur_dsc);
 
     /*Draw he cursor according to the type*/
     lv_area_t cur_area;
     lv_area_copy(&cur_area, &ta->cursor.area);
 
 
     cur_area.x1 += ta->label->coords.x1;
     cur_area.y1 += ta->label->coords.y1;
     cur_area.x2 += ta->label->coords.x1;
     cur_area.y2 += ta->label->coords.y1;
 
     lv_draw_rect(draw_ctx, &cur_dsc, &cur_area);
 
     lv_coord_t border_width = lv_obj_get_style_border_width(obj, LV_PART_CURSOR);
     lv_coord_t left = lv_obj_get_style_pad_left(obj, LV_PART_CURSOR) + border_width;
     lv_coord_t top = lv_obj_get_style_pad_top(obj, LV_PART_CURSOR) + border_width;
     char letter_buf[8] = {0};
     lv_memcpy(letter_buf, &txt[ta->cursor.txt_byte_pos], _lv_txt_encoded_size(&txt[ta->cursor.txt_byte_pos]));
 
     cur_area.x1 += left;
     cur_area.y1 += top;
 
     /*Draw the letter over the cursor only if
      *the cursor has background or the letter has different color than the original.
      *Else the original letter is drawn twice which makes it look bolder*/
     lv_color_t label_color = lv_obj_get_style_text_color(ta->label, 0);
     lv_draw_label_dsc_t cur_label_dsc;
     lv_draw_label_dsc_init(&cur_label_dsc);
     lv_obj_init_draw_label_dsc(obj, LV_PART_CURSOR, &cur_label_dsc);
     if(cur_dsc.bg_opa > LV_OPA_MIN || cur_label_dsc.color.full != label_color.full) {
         lv_draw_label(draw_ctx, &cur_label_dsc, &cur_area, letter_buf, NULL);
     }
 }
 
 static void auto_hide_characters(lv_obj_t * obj)
 {
     lv_textarea_t * ta = (lv_textarea_t *) obj;
 
     if(ta->pwd_show_time == 0) {
         pwd_char_hider(obj);
     }
     else {
         lv_anim_t a;
         lv_anim_init(&a);
         lv_anim_set_var(&a, ta);
         lv_anim_set_exec_cb(&a, pwd_char_hider_anim);
         lv_anim_set_time(&a, ta->pwd_show_time);
         lv_anim_set_values(&a, 0, 1);
         lv_anim_set_path_cb(&a, lv_anim_path_step);
         lv_anim_set_ready_cb(&a, pwd_char_hider_anim_ready);
         lv_anim_start(&a);
     }
 }
 
 static inline bool is_valid_but_non_printable_char(const uint32_t letter)
 {
     if(letter == '\0' || letter == '\n' || letter == '\r') {
         return true;
     }
 
     return false;
 }
 
 #endif

© 2023 acidvegas, inc • generated with stagit