42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
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#include "../../lv_examples.h"
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#if LV_USE_TEXTAREA && LV_USE_KEYBOARD && LV_BUILD_EXAMPLES
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static void ta_event_cb(lv_event_t * e);
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static lv_obj_t * kb;
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/**
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* Automatically format text like a clock. E.g. "12:34"
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* Add the ':' automatically.
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*/
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void lv_example_textarea_3(void)
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{
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/*Create the text area*/
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lv_obj_t * ta = lv_textarea_create(lv_scr_act());
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lv_obj_add_event_cb(ta, ta_event_cb, LV_EVENT_VALUE_CHANGED, NULL);
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lv_textarea_set_accepted_chars(ta, "0123456789:");
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lv_textarea_set_max_length(ta, 5);
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lv_textarea_set_one_line(ta, true);
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lv_textarea_set_text(ta, "");
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/*Create a keyboard*/
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kb = lv_keyboard_create(lv_scr_act());
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lv_obj_set_size(kb, LV_HOR_RES, LV_VER_RES / 2);
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lv_keyboard_set_mode(kb, LV_KEYBOARD_MODE_NUMBER);
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lv_keyboard_set_textarea(kb, ta);
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}
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static void ta_event_cb(lv_event_t * e)
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{
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lv_obj_t * ta = lv_event_get_target(e);
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const char * txt = lv_textarea_get_text(ta);
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if(txt[0] >= '0' && txt[0] <= '9' &&
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txt[1] >= '0' && txt[1] <= '9' &&
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txt[2] != ':') {
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lv_textarea_set_cursor_pos(ta, 2);
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lv_textarea_add_char(ta, ':');
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}
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}
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#endif
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