1    #include "../../../lv_examples.h"
 2    #include <stdio.h>
 3    #if LV_USE_TEXTAREA
 5    lv_obj_t * ta1;
 7    static void event_handler(lv_obj_t * obj, lv_event_t event)
 9            if(event == LV_EVENT_VALUE_CHANGED) {
10                    printf("Value: %s\n", lv_textarea_get_text(obj));
11            }
12            else if(event == LV_EVENT_LONG_PRESSED_REPEAT) {
13                    /*For simple test: Long press the Text are to add the text below*/
14                    const char  * txt = "\n\nYou can scroll it if the text is long enough.\n";
15                    static uint16_t i = 0;
16                    if(txt[i] != '\0') {
17                            lv_textarea_add_char(ta1, txt[i]);
18                            i++;
19                    }
20            }
21    }
23    void lv_ex_textarea_1(void)
24    {
25            ta1 = lv_textarea_create(lv_scr_act(), NULL);
26            lv_obj_set_size(ta1, 200, 100);
27            lv_obj_align(ta1, NULL, LV_ALIGN_CENTER, 0, 0);
28            lv_textarea_set_text(ta1, "A text in a Text Area");    /*Set an initial text*/
29            lv_obj_set_event_cb(ta1, event_handler);
30    }
32    #endif
 1    #include "../../../lv_examples.h"
 2    #include <stdio.h>
 3    #if LV_USE_TEXTAREA && LV_USE_KEYBOARD
 5    static void ta_event_cb(lv_obj_t * ta, lv_event_t event);
 7    static lv_obj_t * kb;
 9    void lv_ex_textarea_2(void)
10    {
11            /* Create the password box */
12            lv_obj_t * pwd_ta = lv_textarea_create(lv_scr_act(), NULL);
13            lv_textarea_set_text(pwd_ta, "");
14            lv_textarea_set_pwd_mode(pwd_ta, true);
15            lv_textarea_set_one_line(pwd_ta, true);
16            lv_textarea_set_cursor_hidden(pwd_ta, true);
17            lv_obj_set_width(pwd_ta, LV_HOR_RES / 2 - 20);
18            lv_obj_set_pos(pwd_ta, 5, 20);
19            lv_obj_set_event_cb(pwd_ta, ta_event_cb);
21            /* Create a label and position it above the text box */
22            lv_obj_t * pwd_label = lv_label_create(lv_scr_act(), NULL);
23            lv_label_set_text(pwd_label, "Password:");
24            lv_obj_align(pwd_label, pwd_ta, LV_ALIGN_OUT_TOP_LEFT, 0, 0);
26            /* Create the one-line mode text area */
27            lv_obj_t * oneline_ta = lv_textarea_create(lv_scr_act(), pwd_ta);
28            lv_textarea_set_pwd_mode(oneline_ta, false);
29            lv_textarea_set_cursor_hidden(oneline_ta, true);
30            lv_obj_align(oneline_ta, NULL, LV_ALIGN_IN_TOP_RIGHT, -5, 20);
33            /* Create a label and position it above the text box */
34            lv_obj_t * oneline_label = lv_label_create(lv_scr_act(), NULL);
35            lv_label_set_text(oneline_label, "Text:");
36            lv_obj_align(oneline_label, oneline_ta, LV_ALIGN_OUT_TOP_LEFT, 0, 0);
38            /* Create a keyboard */
39            kb = lv_keyboard_create(lv_scr_act(), NULL);
40            lv_obj_set_size(kb,  LV_HOR_RES, LV_VER_RES / 2);
42            lv_keyboard_set_textarea(kb, pwd_ta); /* Focus it on one of the text areas to start */
43            lv_keyboard_set_cursor_manage(kb, true); /* Automatically show/hide cursors on text areas */
44    }
46    static void ta_event_cb(lv_obj_t * ta, lv_event_t event)
47    {
48            if(event == LV_EVENT_CLICKED) {
49                    /* Focus on the clicked text area */
50                    if(kb != NULL)
51                            lv_keyboard_set_textarea(kb, ta);
52            }
54            else if(event == LV_EVENT_INSERT) {
55                    const char * str = lv_event_get_data();
56                    if(str[0] == '\n') {
57                            printf("Ready\n");
58                    }
59            }
60    }
62    #endif
 1    #include "../../../lv_examples.h"
 2    #include <stdio.h>
 3    #if LV_USE_TEXTAREA && LV_USE_KEYBOARD
 5    static void ta_event_cb(lv_obj_t * ta, lv_event_t event);
 7    static lv_obj_t * kb;
 9    /**
10     * Automatically format text like a clock. E.g. "12:34"
11     * Add the ':' automatically.
12     */
13    void lv_ex_textarea_3(void)
14    {
15            /* Create the text area */
16            lv_obj_t * ta = lv_textarea_create(lv_scr_act(), NULL);
17            lv_obj_set_event_cb(ta, ta_event_cb);
18            lv_textarea_set_accepted_chars(ta, "0123456789:");
19            lv_textarea_set_max_length(ta, 5);
20            lv_textarea_set_one_line(ta, true);
21            lv_textarea_set_text(ta, "");
24            /*Create a custom map for the keyboard*/
26            static const char * kb_map[] = {
27                              "1","2", "3", " ","\n",
28                              "4", "5", "6", " ", "\n",
29                              "7", "8", "9", LV_SYMBOL_BACKSPACE ,"\n",
30                              "0",LV_SYMBOL_LEFT,LV_SYMBOL_RIGHT," ",""
31            };
33            static const lv_btnmatrix_ctrl_t kb_ctrl[] = {
34                       LV_BTNMATRIX_CTRL_NO_REPEAT, LV_BTNMATRIX_CTRL_NO_REPEAT, LV_BTNMATRIX_CTRL_NO_REPEAT, LV_BTNMATRIX_CTRL_HIDDEN,
35                       LV_BTNMATRIX_CTRL_NO_REPEAT, LV_BTNMATRIX_CTRL_NO_REPEAT, LV_BTNMATRIX_CTRL_NO_REPEAT, LV_BTNMATRIX_CTRL_HIDDEN,
36                       LV_BTNMATRIX_CTRL_NO_REPEAT, LV_BTNMATRIX_CTRL_NO_REPEAT, LV_BTNMATRIX_CTRL_NO_REPEAT, LV_BTNMATRIX_CTRL_NO_REPEAT,
37                       LV_BTNMATRIX_CTRL_NO_REPEAT, LV_BTNMATRIX_CTRL_NO_REPEAT, LV_BTNMATRIX_CTRL_NO_REPEAT, LV_BTNMATRIX_CTRL_HIDDEN,
38            };
40            /* Create a keyboard*/
41            kb = lv_keyboard_create(lv_scr_act(), NULL);
42            lv_obj_set_size(kb,  LV_HOR_RES, LV_VER_RES / 2);
43            lv_keyboard_set_mode(kb, LV_KEYBOARD_MODE_NUM);
44            lv_keyboard_set_map(kb, LV_KEYBOARD_MODE_NUM, kb_map);
45            lv_keyboard_set_ctrl_map(kb, LV_KEYBOARD_MODE_NUM,kb_ctrl);
46            lv_keyboard_set_textarea(kb, ta);
47    }
49    static void ta_event_cb(lv_obj_t * ta, lv_event_t event)
50    {
51            if(event == LV_EVENT_VALUE_CHANGED) {
52                    const char * txt = lv_textarea_get_text(ta);
53                    if(txt[3] == ':') {
54                            lv_textarea_del_char(ta);
55                    }
56                    else if(txt[0] >= '0' && txt[0] <= '9' &&
57                            txt[1] >= '0' && txt[1] <= '9' &&
58                            txt[2] != ':')
59                    {
60                            lv_textarea_set_cursor_pos(ta, 2);
61                            lv_textarea_add_char(ta, ':');
62                    }
63            }
64    }
66    #endif