45 lines
1.7 KiB
C
45 lines
1.7 KiB
C
#include "../../lv_examples.h"
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#if LV_USE_TEXTAREA && LV_BUILD_EXAMPLES
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static void textarea_event_handler(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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LV_LOG_USER("Enter was pressed. The current text is: %s", lv_textarea_get_text(ta));
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}
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static void btnm_event_handler(lv_event_t * e)
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{
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lv_obj_t * obj = lv_event_get_target(e);
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lv_obj_t * ta = lv_event_get_user_data(e);
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const char * txt = lv_btnmatrix_get_btn_text(obj, lv_btnmatrix_get_selected_btn(obj));
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if(strcmp(txt, LV_SYMBOL_BACKSPACE) == 0) lv_textarea_del_char(ta);
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else if(strcmp(txt, LV_SYMBOL_NEW_LINE) == 0) lv_event_send(ta, LV_EVENT_READY, NULL);
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else lv_textarea_add_text(ta, txt);
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}
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void lv_example_textarea_1(void)
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{
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lv_obj_t * ta = lv_textarea_create(lv_scr_act());
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lv_textarea_set_one_line(ta, true);
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lv_obj_align(ta, LV_ALIGN_TOP_MID, 0, 10);
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lv_obj_add_event_cb(ta, textarea_event_handler, LV_EVENT_READY, ta);
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lv_obj_add_state(ta, LV_STATE_FOCUSED); /*To be sure the cursor is visible*/
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static const char * btnm_map[] = {"1", "2", "3", "\n",
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"4", "5", "6", "\n",
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"7", "8", "9", "\n",
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LV_SYMBOL_BACKSPACE, "0", LV_SYMBOL_NEW_LINE, ""
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};
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lv_obj_t * btnm = lv_btnmatrix_create(lv_scr_act());
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lv_obj_set_size(btnm, 200, 150);
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lv_obj_align(btnm, LV_ALIGN_BOTTOM_MID, 0, -10);
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lv_obj_add_event_cb(btnm, btnm_event_handler, LV_EVENT_VALUE_CHANGED, ta);
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lv_obj_clear_flag(btnm, LV_OBJ_FLAG_CLICK_FOCUSABLE); /*To keep the text area focused on button clicks*/
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lv_btnmatrix_set_map(btnm, btnm_map);
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}
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#endif
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