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A39模拟器

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liulin
2024-03-07 11:03:18 +08:00
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26
MXC-A39/lvgl/examples/widgets/textarea/index.rst Normal file
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C
^
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
MicroPython
^^^^^^^^^^^
No examples yet.

43
MXC-A39/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_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_btnmatrix_get_btn_text(obj, lv_btnmatrix_get_selected_btn(obj));
if(strcmp(txt, LV_SYMBOL_BACKSPACE) == 0) lv_textarea_del_char(ta);
else if(strcmp(txt, LV_SYMBOL_NEW_LINE) == 0) lv_event_send(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_scr_act());
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_btnmatrix_create(lv_scr_act());
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_clear_flag(btnm, LV_OBJ_FLAG_CLICK_FOCUSABLE); /*To keep the text area focused on button clicks*/
lv_btnmatrix_set_map(btnm, btnm_map);
}
#endif

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MXC-A39/lvgl/examples/widgets/textarea/lv_example_textarea_1.py Normal file
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def event_handler(obj, event):
if event == lv.EVENT.VALUE_CHANGED:
print("Value: %s" % obj.get_text())
elif event == lv.EVENT.LONG_PRESSED_REPEAT:
# For simple test: Long press the Text are to add the text below
ta1.add_text("\n\nYou can scroll it if the text is long enough.\n")
ta1 = lv.ta(lv.scr_act())
ta1.set_size(200, 100)
ta1.align(None, lv.ALIGN.CENTER, 0, 0)
ta1.set_cursor_type(lv.CURSOR.BLOCK)
ta1.set_text("A text in a Text Area") # Set an initial text
ta1.set_event_cb(event_handler)

59
MXC-A39/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_scr_act());
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_scr_act());
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_scr_act());
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_scr_act());
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_scr_act());
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*/
}
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

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MXC-A39/lvgl/examples/widgets/textarea/lv_example_textarea_2.py Normal file
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HOR_RES = lv.disp_get_hor_res(lv.disp_get_default())
def kb_event_cb(event_kb, event):
# Just call the regular event handler
event_kb.def_event_cb(event)
def ta_event_cb(ta, event):
if event == lv.EVENT.INSERT:
# get inserted value
ptr = lv.C_Pointer()
ptr.ptr_val = lv.event_get_data()
if ptr.str_val == "\n":
print("Ready")
elif event == lv.EVENT.CLICKED:
# Focus on the clicked text area
kb.set_ta(ta)
# Create the password box
pwd_ta = lv.ta(lv.scr_act())
pwd_ta.set_text("");
pwd_ta.set_pwd_mode(True)
pwd_ta.set_one_line(True)
pwd_ta.set_width(HOR_RES // 2 - 20)
pwd_ta.set_pos(5, 20)
pwd_ta.set_event_cb(ta_event_cb)
# Create a label and position it above the text box
pwd_label = lv.label(lv.scr_act())
pwd_label.set_text("Password:")
pwd_label.align(pwd_ta, lv.ALIGN.OUT_TOP_LEFT, 0, 0)
# Create the one-line mode text area
oneline_ta = lv.ta(lv.scr_act(), pwd_ta)
oneline_ta.set_pwd_mode(False)
oneline_ta.set_cursor_type(lv.CURSOR.LINE | lv.CURSOR.HIDDEN)
oneline_ta.align(None, lv.ALIGN.IN_TOP_RIGHT, -5, 20)
oneline_ta.set_event_cb(ta_event_cb)
# Create a label and position it above the text box
oneline_label = lv.label(lv.scr_act())
oneline_label.set_text("Text:")
oneline_label.align(oneline_ta, lv.ALIGN.OUT_TOP_LEFT, 0, 0)
# Create a keyboard and make it fill the width of the above text areas
kb = lv.kb(lv.scr_act())
kb.set_pos(5, 90)
kb.set_event_cb(kb_event_cb) # Setting a custom event handler stops the keyboard from closing automatically
kb.set_size(HOR_RES - 10, 140)
kb.set_ta(pwd_ta) # Focus it on one of the text areas to start
kb.set_cursor_manage(True) # Automatically show/hide cursors on text areas

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MXC-A39/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_scr_act());
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_scr_act());
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