update asserts

examples/widgets/textarea/lv_example_textarea_3.c

@@ -0,0 +1,44 @@
+//#include "../../../lvgl.h"
+//#include <stdio.h>
+//#if LV_USE_TEXTAREA && LV_USE_KEYBOARD
+//
+//static void ta_event_cb(lv_obj_t * ta, lv_event_t event);
+//
+//static lv_obj_t * kb;
+//
+///**
+// * Automatically format text like a clock. E.g. "12:34"
+// * Add the ':' automatically.
+// */
+//void lv_example_textarea_3(void)
+//{
+//    /* Create the text area */
+//    lv_obj_t * ta = lv_textarea_create(lv_scr_act(), NULL);
+//    lv_obj_set_event_cb(ta, ta_event_cb);
+//    lv_textarea_set_accepted_chars(ta, "0123456789:");
+//    lv_textarea_set_max_length(ta, 5);
+//    lv_textarea_set_one_line(ta, true);
+//    lv_textarea_set_text(ta, "");
+//
+//    /* Create a keyboard*/
+//    kb = lv_keyboard_create(lv_scr_act(), NULL);
+//    lv_obj_set_size(kb,  LV_HOR_RES, LV_VER_RES / 2);
+//    lv_keyboard_set_mode(kb, LV_KEYBOARD_MODE_NUM);
+//    lv_keyboard_set_textarea(kb, ta);
+//}
+//
+//static void ta_event_cb(lv_obj_t * ta, lv_event_t event)
+//{
+//    if(event == LV_EVENT_VALUE_CHANGED) {
+//        const char * txt = lv_textarea_get_text(ta);
+//        if(txt[0] >= '0' && txt[0] <= '9' &&
+//            txt[1] >= '0' && txt[1] <= '9' &&
+//            txt[2] != ':')
+//        {
+//            lv_textarea_set_cursor_pos(ta, 2);
+//            lv_textarea_add_char(ta, ':');
+//        }
+//    }
+//}
+//
+//#endif