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This commit is contained in:
Daniel Stoppek
2024-12-09 19:47:18 +01:00
parent b55a8cd2bc
commit 528e862838
3471 changed files with 1105029 additions and 0 deletions
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20
libraries/lvgl/examples/widgets/textarea/index.rst Normal file
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Simple Text area
----------------
.. lv_example:: widgets/textarea/lv_example_textarea_1
:language: c
Text area with password field
-----------------------------
.. lv_example:: widgets/textarea/lv_example_textarea_2
:language: c
Text auto-formatting
--------------------
.. lv_example:: widgets/textarea/lv_example_textarea_3
:language: c

45
libraries/lvgl/examples/widgets/textarea/lv_example_textarea_1.c Normal file
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#include "../../lv_examples.h"
#if LV_USE_TEXTAREA && LV_BUILD_EXAMPLES
static void textarea_event_handler(lv_event_t * e)
{
lv_obj_t * ta = lv_event_get_target(e);
LV_UNUSED(ta);
LV_LOG_USER("Enter was pressed. The current text is: %s", lv_textarea_get_text(ta));
}
static void btnm_event_handler(lv_event_t * e)
{
lv_obj_t * obj = lv_event_get_target(e);
lv_obj_t * ta = lv_event_get_user_data(e);
const char * txt = lv_buttonmatrix_get_button_text(obj, lv_buttonmatrix_get_selected_button(obj));
if(lv_strcmp(txt, LV_SYMBOL_BACKSPACE) == 0) lv_textarea_delete_char(ta);
else if(lv_strcmp(txt, LV_SYMBOL_NEW_LINE) == 0) lv_obj_send_event(ta, LV_EVENT_READY, NULL);
else lv_textarea_add_text(ta, txt);
}
void lv_example_textarea_1(void)
{
lv_obj_t * ta = lv_textarea_create(lv_screen_active());
lv_textarea_set_one_line(ta, true);
lv_obj_align(ta, LV_ALIGN_TOP_MID, 0, 10);
lv_obj_add_event_cb(ta, textarea_event_handler, LV_EVENT_READY, ta);
lv_obj_add_state(ta, LV_STATE_FOCUSED); /*To be sure the cursor is visible*/
static const char * btnm_map[] = {"1", "2", "3", "\n",
"4", "5", "6", "\n",
"7", "8", "9", "\n",
LV_SYMBOL_BACKSPACE, "0", LV_SYMBOL_NEW_LINE, ""
};
lv_obj_t * btnm = lv_buttonmatrix_create(lv_screen_active());
lv_obj_set_size(btnm, 200, 150);
lv_obj_align(btnm, LV_ALIGN_BOTTOM_MID, 0, -10);
lv_obj_add_event_cb(btnm, btnm_event_handler, LV_EVENT_VALUE_CHANGED, ta);
lv_obj_remove_flag(btnm, LV_OBJ_FLAG_CLICK_FOCUSABLE); /*To keep the text area focused on button clicks*/
lv_buttonmatrix_set_map(btnm, btnm_map);
}
#endif

66
libraries/lvgl/examples/widgets/textarea/lv_example_textarea_2.c Normal file
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#include "../../lv_examples.h"
#if LV_USE_TEXTAREA && LV_USE_KEYBOARD && LV_BUILD_EXAMPLES
static void ta_event_cb(lv_event_t * e);
static lv_obj_t * kb;
void lv_example_textarea_2(void)
{
/*Create the password box*/
lv_obj_t * pwd_ta = lv_textarea_create(lv_screen_active());
lv_textarea_set_text(pwd_ta, "");
lv_textarea_set_password_mode(pwd_ta, true);
lv_textarea_set_one_line(pwd_ta, true);
lv_obj_set_width(pwd_ta, lv_pct(40));
lv_obj_set_pos(pwd_ta, 5, 20);
lv_obj_add_event_cb(pwd_ta, ta_event_cb, LV_EVENT_ALL, NULL);
/*Create a label and position it above the text box*/
lv_obj_t * pwd_label = lv_label_create(lv_screen_active());
lv_label_set_text(pwd_label, "Password:");
lv_obj_align_to(pwd_label, pwd_ta, LV_ALIGN_OUT_TOP_LEFT, 0, 0);
/*Create the one-line mode text area*/
lv_obj_t * text_ta = lv_textarea_create(lv_screen_active());
lv_textarea_set_one_line(text_ta, true);
lv_textarea_set_password_mode(text_ta, false);
lv_obj_set_width(text_ta, lv_pct(40));
lv_obj_add_event_cb(text_ta, ta_event_cb, LV_EVENT_ALL, NULL);
lv_obj_align(text_ta, LV_ALIGN_TOP_RIGHT, -5, 20);
/*Create a label and position it above the text box*/
lv_obj_t * oneline_label = lv_label_create(lv_screen_active());
lv_label_set_text(oneline_label, "Text:");
lv_obj_align_to(oneline_label, text_ta, LV_ALIGN_OUT_TOP_LEFT, 0, 0);
/*Create a keyboard*/
kb = lv_keyboard_create(lv_screen_active());
lv_obj_set_size(kb, LV_HOR_RES, LV_VER_RES / 2);
lv_keyboard_set_textarea(kb, pwd_ta); /*Focus it on one of the text areas to start*/
/*The keyboard will show Arabic characters if they are enabled */
#if LV_USE_ARABIC_PERSIAN_CHARS && LV_FONT_DEJAVU_16_PERSIAN_HEBREW
lv_obj_set_style_text_font(kb, &lv_font_dejavu_16_persian_hebrew, 0);
lv_obj_set_style_text_font(text_ta, &lv_font_dejavu_16_persian_hebrew, 0);
lv_obj_set_style_text_font(pwd_ta, &lv_font_dejavu_16_persian_hebrew, 0);
#endif
}
static void ta_event_cb(lv_event_t * e)
{
lv_event_code_t code = lv_event_get_code(e);
lv_obj_t * ta = lv_event_get_target(e);
if(code == LV_EVENT_CLICKED || code == LV_EVENT_FOCUSED) {
/*Focus on the clicked text area*/
if(kb != NULL) lv_keyboard_set_textarea(kb, ta);
}
else if(code == LV_EVENT_READY) {
LV_LOG_USER("Ready, current text: %s", lv_textarea_get_text(ta));
}
}
#endif

41
libraries/lvgl/examples/widgets/textarea/lv_example_textarea_3.c Normal file
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#include "../../lv_examples.h"
#if LV_USE_TEXTAREA && LV_USE_KEYBOARD && LV_BUILD_EXAMPLES
static void ta_event_cb(lv_event_t * e);
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_screen_active());
lv_obj_add_event_cb(ta, ta_event_cb, LV_EVENT_VALUE_CHANGED, NULL);
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_screen_active());
lv_obj_set_size(kb, LV_HOR_RES, LV_VER_RES / 2);
lv_keyboard_set_mode(kb, LV_KEYBOARD_MODE_NUMBER);
lv_keyboard_set_textarea(kb, ta);
}
static void ta_event_cb(lv_event_t * e)
{
lv_obj_t * ta = lv_event_get_target(e);
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