1 #include "../../lv_examples.h"
2 #if LV_USE_TEXTAREA && LV_USE_KEYBOARD && LV_BUILD_EXAMPLES
3
4 static void ta_event_cb(lv_event_t * e);
5
6 static lv_obj_t * kb;
7
8 /**
9 * Automatically format text like a clock. E.g. "12:34"
10 * Add the ':' automatically.
11 */
lv_example_textarea_3(void)12 void lv_example_textarea_3(void)
13 {
14 /*Create the text area*/
15 lv_obj_t * ta = lv_textarea_create(lv_scr_act());
16 lv_obj_add_event_cb(ta, ta_event_cb, LV_EVENT_VALUE_CHANGED, NULL);
17 lv_textarea_set_accepted_chars(ta, "0123456789:");
18 lv_textarea_set_max_length(ta, 5);
19 lv_textarea_set_one_line(ta, true);
20 lv_textarea_set_text(ta, "");
21
22 /*Create a keyboard*/
23 kb = lv_keyboard_create(lv_scr_act());
24 lv_obj_set_size(kb, LV_HOR_RES, LV_VER_RES / 2);
25 lv_keyboard_set_mode(kb, LV_KEYBOARD_MODE_NUMBER);
26 lv_keyboard_set_textarea(kb, ta);
27 }
28
ta_event_cb(lv_event_t * e)29 static void ta_event_cb(lv_event_t * e)
30 {
31 lv_obj_t * ta = lv_event_get_target(e);
32 const char * txt = lv_textarea_get_text(ta);
33 if(txt[0] >= '0' && txt[0] <= '9' &&
34 txt[1] >= '0' && txt[1] <= '9' &&
35 txt[2] != ':') {
36 lv_textarea_set_cursor_pos(ta, 2);
37 lv_textarea_add_char(ta, ':');
38 }
39 }
40
41 #endif
42
