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hekate/nyx/nyx_gui/libs/lvgl/lv_objx/lv_kb.c
ctcaer@gmail.com c41f98039c [Nyx] Introducing hekate GUI, named Nyx! 
Version 0.8.0.

Expect dragons!
2019-06-30 04:03:00 +03:00

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/**
* @file lv_kb.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_kb.h"
#if USE_LV_KB != 0
#include "lv_ta.h"
#include "../lv_themes/lv_theme.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static lv_res_t lv_kb_signal(lv_obj_t * kb, lv_signal_t sign, void * param);
static lv_res_t lv_kb_def_action(lv_obj_t * kb, const char * txt);
/**********************
* STATIC VARIABLES
**********************/
static lv_signal_func_t ancestor_signal;
static const char * kb_map_lc[] = {
"\2051#", "\204q", "\204w", "\204e", "\204r", "\204t", "\204y", "\204u", "\204i", "\204o", "\204p", "\207Bksp", "\n",
"\226ABC", "\203a", "\203s", "\203d", "\203f", "\203g", "\203h", "\203j", "\203k", "\203l", "\207Enter", "\n",
"_", "-", "z", "x", "c", "v", "b", "n", "m", ".", ",", ":", "\n",
"\202"SYMBOL_CLOSE, "\202"SYMBOL_LEFT, "\206 ", "\202"SYMBOL_RIGHT, "\202"SYMBOL_OK, ""
};
static const char * kb_map_uc[] = {
"\2051#", "\204Q", "\204W", "\204E", "\204R", "\204T", "\204Y", "\204U", "\204I", "\204O", "\204P", "\207Bksp", "\n",
"\226abc", "\203A", "\203S", "\203D", "\203F", "\203G", "\203H", "\203J", "\203K", "\203L", "\207Enter", "\n",
"_", "-", "Z", "X", "C", "V", "B", "N", "M", ".", ",", ":", "\n",
"\202"SYMBOL_CLOSE, "\202"SYMBOL_LEFT, "\206 ", "\202"SYMBOL_RIGHT, "\202"SYMBOL_OK, ""
};
static const char * kb_map_spec[] = {
"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "\202Bksp", "\n",
"\222abc", "+", "-", "/", "*", "=", "%", "!", "?", "#", "<", ">", "\n",
"\\", "@", "$", "(", ")", "{", "}", "[", "]", ";", "\"", "'", "\n",
"\202"SYMBOL_CLOSE, "\202"SYMBOL_LEFT, "\206 ", "\202"SYMBOL_RIGHT, "\202"SYMBOL_OK, ""
};
static const char * kb_map_num[] = {
"1", "2", "3", "\202"SYMBOL_CLOSE, "\n",
"4", "5", "6", "\202"SYMBOL_OK, "\n",
"7", "8", "9", "\202Bksp", "\n",
"+/-", "0", ".", SYMBOL_LEFT, SYMBOL_RIGHT, ""
};
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Create a keyboard objects
* @param par pointer to an object, it will be the parent of the new keyboard
* @param copy pointer to a keyboard object, if not NULL then the new object will be copied from it
* @return pointer to the created keyboard
*/
lv_obj_t * lv_kb_create(lv_obj_t * par, const lv_obj_t * copy)
{
LV_LOG_TRACE("keyboard create started");
/*Create the ancestor of keyboard*/
lv_obj_t * new_kb = lv_btnm_create(par, copy);
lv_mem_assert(new_kb);
if(new_kb == NULL) return NULL;
if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_kb);
/*Allocate the keyboard type specific extended data*/
lv_kb_ext_t * ext = lv_obj_allocate_ext_attr(new_kb, sizeof(lv_kb_ext_t));
lv_mem_assert(ext);
if(ext == NULL) return NULL;
/*Initialize the allocated 'ext' */
ext->ta = NULL;
ext->mode = LV_KB_MODE_TEXT;
ext->cursor_mng = 0;
ext->hide_action = NULL;
ext->ok_action = NULL;
/*The signal and design functions are not copied so set them here*/
lv_obj_set_signal_func(new_kb, lv_kb_signal);
/*Init the new keyboard keyboard*/
if(copy == NULL) {
lv_obj_set_size(new_kb, LV_HOR_RES, LV_VER_RES / 2);
lv_obj_align(new_kb, NULL, LV_ALIGN_IN_BOTTOM_MID, 0, 0);
lv_btnm_set_action(new_kb, lv_kb_def_action);
lv_btnm_set_map(new_kb, kb_map_lc);
/*Set the default styles*/
lv_theme_t * th = lv_theme_get_current();
if(th) {
lv_kb_set_style(new_kb, LV_KB_STYLE_BG, th->kb.bg);
lv_kb_set_style(new_kb, LV_KB_STYLE_BTN_REL, th->kb.btn.rel);
lv_kb_set_style(new_kb, LV_KB_STYLE_BTN_PR, th->kb.btn.pr);
lv_kb_set_style(new_kb, LV_KB_STYLE_BTN_TGL_REL, th->kb.btn.tgl_rel);
lv_kb_set_style(new_kb, LV_KB_STYLE_BTN_TGL_PR, th->kb.btn.tgl_pr);
lv_kb_set_style(new_kb, LV_KB_STYLE_BTN_INA, th->kb.btn.ina);
} else {
/*Let the button matrix's styles*/
}
}
/*Copy an existing keyboard*/
else {
lv_kb_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
ext->ta = NULL;
ext->ta = copy_ext->ta;
ext->mode = copy_ext->mode;
ext->cursor_mng = copy_ext->cursor_mng;
ext->hide_action = copy_ext->hide_action;
ext->ok_action = copy_ext->ok_action;
/*Refresh the style with new signal function*/
lv_obj_refresh_style(new_kb);
}
LV_LOG_INFO("keyboard created");
return new_kb;
}
/*=====================
* Setter functions
*====================*/
/**
* Assign a Text Area to the Keyboard. The pressed characters will be put there.
* @param kb pointer to a Keyboard object
* @param ta pointer to a Text Area object to write there
*/
void lv_kb_set_ta(lv_obj_t * kb, lv_obj_t * ta)
{
lv_kb_ext_t * ext = lv_obj_get_ext_attr(kb);
lv_cursor_type_t cur_type;
/*Hide the cursor of the old Text area if cursor management is enabled*/
if(ext->ta && ext->cursor_mng) {
cur_type = lv_ta_get_cursor_type(ext->ta);
lv_ta_set_cursor_type(ext->ta, cur_type | LV_CURSOR_HIDDEN);
}
ext->ta = ta;
/*Show the cursor of the new Text area if cursor management is enabled*/
if(ext->ta && ext->cursor_mng) {
cur_type = lv_ta_get_cursor_type(ext->ta);
lv_ta_set_cursor_type(ext->ta, cur_type & (~LV_CURSOR_HIDDEN));
}
}
/**
* Set a new a mode (text or number map)
* @param kb pointer to a Keyboard object
* @param mode the mode from 'lv_kb_mode_t'
*/
void lv_kb_set_mode(lv_obj_t * kb, lv_kb_mode_t mode)
{
lv_kb_ext_t * ext = lv_obj_get_ext_attr(kb);
if(ext->mode == mode) return;
ext->mode = mode;
if(mode == LV_KB_MODE_TEXT) lv_btnm_set_map(kb, kb_map_lc);
else if(mode == LV_KB_MODE_NUM) lv_btnm_set_map(kb, kb_map_num);
}
/**
* Automatically hide or show the cursor of Text Area
* @param kb pointer to a Keyboard object
* @param en true: show cursor on the current text area, false: hide cursor
*/
void lv_kb_set_cursor_manage(lv_obj_t * kb, bool en)
{
lv_kb_ext_t * ext = lv_obj_get_ext_attr(kb);
if(ext->cursor_mng == en) return;
ext->cursor_mng = en == false ? 0 : 1;
if(ext->ta) {
lv_cursor_type_t cur_type;
cur_type = lv_ta_get_cursor_type(ext->ta);
if(ext->cursor_mng) {
lv_ta_set_cursor_type(ext->ta, cur_type & (~LV_CURSOR_HIDDEN));
} else {
lv_ta_set_cursor_type(ext->ta, cur_type | LV_CURSOR_HIDDEN);
}
}
}
/**
* Set call back to call when the "Ok" button is pressed
* @param kb pointer to Keyboard object
* @param action a callback with 'lv_action_t' type
*/
void lv_kb_set_ok_action(lv_obj_t * kb, lv_action_t action)
{
lv_kb_ext_t * ext = lv_obj_get_ext_attr(kb);
ext->ok_action = action;
}
/**
* Set call back to call when the "Hide" button is pressed
* @param kb pointer to Keyboard object
* @param action a callback with 'lv_action_t' type
*/
void lv_kb_set_hide_action(lv_obj_t * kb, lv_action_t action)
{
lv_kb_ext_t * ext = lv_obj_get_ext_attr(kb);
ext->hide_action = action;
}
/**
* Set a style of a keyboard
* @param kb pointer to a keyboard object
* @param type which style should be set
* @param style pointer to a style
*/
void lv_kb_set_style(lv_obj_t * kb, lv_kb_style_t type, lv_style_t * style)
{
switch(type) {
case LV_KB_STYLE_BG:
lv_btnm_set_style(kb, LV_BTNM_STYLE_BG, style);
break;
case LV_KB_STYLE_BTN_REL:
lv_btnm_set_style(kb, LV_BTNM_STYLE_BTN_REL, style);
break;
case LV_KB_STYLE_BTN_PR:
lv_btnm_set_style(kb, LV_BTNM_STYLE_BTN_PR, style);
break;
case LV_KB_STYLE_BTN_TGL_REL:
lv_btnm_set_style(kb, LV_BTNM_STYLE_BTN_TGL_REL, style);
break;
case LV_KB_STYLE_BTN_TGL_PR:
lv_btnm_set_style(kb, LV_BTNM_STYLE_BTN_TGL_PR, style);
break;
case LV_KB_STYLE_BTN_INA:
lv_btnm_set_style(kb, LV_BTNM_STYLE_BTN_INA, style);
break;
}
}
/*=====================
* Getter functions
*====================*/
/**
* Assign a Text Area to the Keyboard. The pressed characters will be put there.
* @param kb pointer to a Keyboard object
* @return pointer to the assigned Text Area object
*/
lv_obj_t * lv_kb_get_ta(const lv_obj_t * kb)
{
lv_kb_ext_t * ext = lv_obj_get_ext_attr(kb);
return ext->ta;
}
/**
* Set a new a mode (text or number map)
* @param kb pointer to a Keyboard object
* @return the current mode from 'lv_kb_mode_t'
*/
lv_kb_mode_t lv_kb_get_mode(const lv_obj_t * kb)
{
lv_kb_ext_t * ext = lv_obj_get_ext_attr(kb);
return ext->mode;
}
/**
* Get the current cursor manage mode.
* @param kb pointer to a Keyboard object
* @return true: show cursor on the current text area, false: hide cursor
*/
bool lv_kb_get_cursor_manage(const lv_obj_t * kb)
{
lv_kb_ext_t * ext = lv_obj_get_ext_attr(kb);
return ext->cursor_mng == 0 ? false : true;
}
/**
* Get the callback to call when the "Ok" button is pressed
* @param kb pointer to Keyboard object
* @return the ok callback
*/
lv_action_t lv_kb_get_ok_action(const lv_obj_t * kb)
{
lv_kb_ext_t * ext = lv_obj_get_ext_attr(kb);
return ext->ok_action;
}
/**
* Get the callback to call when the "Hide" button is pressed
* @param kb pointer to Keyboard object
* @return the close callback
*/
lv_action_t lv_kb_get_hide_action(const lv_obj_t * kb)
{
lv_kb_ext_t * ext = lv_obj_get_ext_attr(kb);
return ext->hide_action;
}
/**
* Get a style of a keyboard
* @param kb pointer to a keyboard object
* @param type which style should be get
* @return style pointer to a style
*/
lv_style_t * lv_kb_get_style(const lv_obj_t * kb, lv_kb_style_t type)
{
lv_style_t * style = NULL;
switch(type) {
case LV_KB_STYLE_BG:
style = lv_btnm_get_style(kb, LV_BTNM_STYLE_BG);
break;
case LV_KB_STYLE_BTN_REL:
style = lv_btnm_get_style(kb, LV_BTNM_STYLE_BTN_REL);
break;
case LV_KB_STYLE_BTN_PR:
style = lv_btnm_get_style(kb, LV_BTNM_STYLE_BTN_PR);
break;
case LV_KB_STYLE_BTN_TGL_REL:
style = lv_btnm_get_style(kb, LV_BTNM_STYLE_BTN_TGL_REL);
break;
case LV_KB_STYLE_BTN_TGL_PR:
style = lv_btnm_get_style(kb, LV_BTNM_STYLE_BTN_TGL_PR);
break;
case LV_KB_STYLE_BTN_INA:
style = lv_btnm_get_style(kb, LV_BTNM_STYLE_BTN_INA);
break;
default:
style = NULL;
break;
}
return style;
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Signal function of the keyboard
* @param kb pointer to a keyboard object
* @param sign a signal type from lv_signal_t enum
* @param param pointer to a signal specific variable
* @return LV_RES_OK: the object is not deleted in the function; LV_RES_INV: the object is deleted
*/
static lv_res_t lv_kb_signal(lv_obj_t * kb, lv_signal_t sign, void * param)
{
lv_res_t res;
/* Include the ancient signal function */
res = ancestor_signal(kb, sign, param);
if(res != LV_RES_OK) return res;
if(sign == LV_SIGNAL_CLEANUP) {
/*Nothing to cleanup. (No dynamically allocated memory in 'ext')*/
} else if(sign == LV_SIGNAL_GET_TYPE) {
lv_obj_type_t * buf = param;
uint8_t i;
for(i = 0; i < LV_MAX_ANCESTOR_NUM - 1; i++) { /*Find the last set data*/
if(buf->type[i] == NULL) break;
}
buf->type[i] = "lv_kb";
}
return res;
}
/**
* Called when a button of 'kb_btnm' is released
* @param btnm pointer to 'kb_btnm'
* @param i the index of the released button from the current btnm map
* @return LV_ACTION_RES_INV if the btnm is deleted else LV_ACTION_RES_OK
*/
static lv_res_t lv_kb_def_action(lv_obj_t * kb, const char * txt)
{
lv_kb_ext_t * ext = lv_obj_get_ext_attr(kb);
lv_res_t res = LV_RES_OK;
/*Do the corresponding action according to the text of the button*/
if(strcmp(txt, "abc") == 0) {
lv_btnm_set_map(kb, kb_map_lc);
return LV_RES_OK;
} else if(strcmp(txt, "ABC") == 0) {
lv_btnm_set_map(kb, kb_map_uc);
return LV_RES_OK;
} else if(strcmp(txt, "1#") == 0) {
lv_btnm_set_map(kb, kb_map_spec);
return LV_RES_OK;
} else if(strcmp(txt, SYMBOL_CLOSE) == 0) {
if(ext->hide_action) res = ext->hide_action(kb);
else {
lv_kb_set_ta(kb, NULL); /*De-assign the text area to hide it cursor if needed*/
lv_obj_del(kb);
}
return res;
} else if(strcmp(txt, SYMBOL_OK) == 0) {
if(ext->ok_action) res = ext->ok_action(kb);
else {
lv_kb_set_ta(kb, NULL); /*De-assign the text area to hide it cursor if needed*/
res = lv_obj_del(kb);
}
return res;
}
if(res != LV_RES_OK) return res; /*The keyboard might be deleted in the actions*/
/*Add the characters to the text area if set*/
if(ext->ta == NULL) return res;
if(strcmp(txt, "Enter") == 0)lv_ta_add_char(ext->ta, '\n');
else if(strcmp(txt, SYMBOL_LEFT) == 0) lv_ta_cursor_left(ext->ta);
else if(strcmp(txt, SYMBOL_RIGHT) == 0) lv_ta_cursor_right(ext->ta);
else if(strcmp(txt, "Bksp") == 0) lv_ta_del_char(ext->ta);
else if(strcmp(txt, "+/-") == 0) {
uint16_t cur = lv_ta_get_cursor_pos(ext->ta);
const char * ta_txt = lv_ta_get_text(ext->ta);
if(ta_txt[0] == '-') {
lv_ta_set_cursor_pos(ext->ta, 1);
lv_ta_del_char(ext->ta);
lv_ta_add_char(ext->ta, '+');
lv_ta_set_cursor_pos(ext->ta, cur);
} else if(ta_txt[0] == '+') {
lv_ta_set_cursor_pos(ext->ta, 1);
lv_ta_del_char(ext->ta);
lv_ta_add_char(ext->ta, '-');
lv_ta_set_cursor_pos(ext->ta, cur);
} else {
lv_ta_set_cursor_pos(ext->ta, 0);
lv_ta_add_char(ext->ta, '-');
lv_ta_set_cursor_pos(ext->ta, cur + 1);
}
} else {
lv_ta_add_text(ext->ta, txt);
}
return LV_RES_OK;
}
#endif
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