diff options
Diffstat (limited to 'lib/lvgl/src/widgets/lv_textarea.c')
| m--------- | lib/lvgl | 0 | ||||
| -rw-r--r-- | lib/lvgl/src/widgets/lv_textarea.c | 1370 |
2 files changed, 1370 insertions, 0 deletions
diff --git a/lib/lvgl b/lib/lvgl deleted file mode 160000 -Subproject 0732400e7b564dd0e7dc4a924619d8e19c5b23a diff --git a/lib/lvgl/src/widgets/lv_textarea.c b/lib/lvgl/src/widgets/lv_textarea.c new file mode 100644 index 00000000..4d497e66 --- /dev/null +++ b/lib/lvgl/src/widgets/lv_textarea.c @@ -0,0 +1,1370 @@ +/** + * @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_password_bullet(lv_obj_t * obj, const char * bullet) +{ + LV_ASSERT_OBJ(obj, MY_CLASS); + LV_ASSERT_NULL(bullet); + + lv_textarea_t * ta = (lv_textarea_t *)obj; + + if(!bullet && (ta->pwd_bullet)) { + lv_mem_free(ta->pwd_bullet); + ta->pwd_bullet = NULL; + } + else { + size_t txt_len = strlen(bullet); + + /*Allocate memory for the pwd_bullet text*/ + /*NOTE: Using special realloc behavior, malloc-like when data_p is NULL*/ + ta->pwd_bullet = lv_mem_realloc(ta->pwd_bullet, txt_len + 1); + LV_ASSERT_MALLOC(ta->pwd_bullet); + if(ta->pwd_bullet == NULL) { + LV_LOG_ERROR("lv_textarea_set_password_bullet: couldn't allocate memory for bullet"); + return; + } + + strcpy(ta->pwd_bullet, bullet); + ta->pwd_bullet[txt_len] = '\0'; + } + + lv_obj_invalidate(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; +} + +const char * lv_textarea_get_password_bullet(lv_obj_t * obj) +{ + LV_ASSERT_OBJ(obj, MY_CLASS); + + lv_textarea_t * ta = (lv_textarea_t *)obj; + + if(ta->pwd_bullet) return ta->pwd_bullet; + + lv_font_glyph_dsc_t g; + const lv_font_t * font = lv_obj_get_style_text_font(obj, LV_PART_MAIN); + + /*If the textarea's font has the bullet character use it else fallback to "*"*/ + if(lv_font_get_glyph_dsc(font, &g, LV_TEXTAREA_PWD_BULLET_UNICODE, 0)) + return LV_SYMBOL_BULLET; + return "*"; +} + +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_bullet = 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->pwd_bullet != NULL) { + lv_mem_free(ta->pwd_bullet); + ta->pwd_bullet = 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; + + const char * bullet = lv_textarea_get_password_bullet(obj); + 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 |