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hekate/bdk/libs/lvgl/lv_objx/lv_cb.c

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/**
* @file lv_cb.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_cb.h"
#if USE_LV_CB != 0
#include "../lv_core/lv_group.h"
#include "../lv_themes/lv_theme.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static bool lv_cb_design(lv_obj_t * cb, const lv_area_t * mask, lv_design_mode_t mode);
static bool lv_bullet_design(lv_obj_t * bullet, const lv_area_t * mask, lv_design_mode_t mode);
static lv_res_t lv_cb_signal(lv_obj_t * cb, lv_signal_t sign, void * param);
/**********************
* STATIC VARIABLES
**********************/
static lv_design_func_t ancestor_bg_design;
static lv_design_func_t ancestor_bullet_design;
static lv_signal_func_t ancestor_signal;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Create a check box objects
* @param par pointer to an object, it will be the parent of the new check box
* @param copy pointer to a check box object, if not NULL then the new object will be copied from it
* @return pointer to the created check box
*/
lv_obj_t * lv_cb_create(lv_obj_t * par, const lv_obj_t * copy)
{
LV_LOG_TRACE("check box create started");
/*Create the ancestor basic object*/
lv_obj_t * new_cb = lv_btn_create(par, copy);
lv_mem_assert(new_cb);
if(new_cb == NULL) return NULL;
if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_cb);
if(ancestor_bg_design == NULL) ancestor_bg_design = lv_obj_get_design_func(new_cb);
lv_cb_ext_t * ext = lv_obj_allocate_ext_attr(new_cb, sizeof(lv_cb_ext_t));
lv_mem_assert(ext);
if(ext == NULL) return NULL;
ext->bullet = NULL;
ext->label = NULL;
lv_obj_set_signal_func(new_cb, lv_cb_signal);
lv_obj_set_design_func(new_cb, lv_cb_design);
/*Init the new checkbox object*/
if(copy == NULL) {
ext->bullet = lv_btn_create(new_cb, NULL);
if(ancestor_bullet_design == NULL) ancestor_bullet_design = lv_obj_get_design_func(ext->bullet);
lv_obj_set_click(ext->bullet, false);
ext->label = lv_label_create(new_cb, NULL);
lv_cb_set_text(new_cb, "Check box");
lv_btn_set_layout(new_cb, LV_LAYOUT_ROW_M);
lv_btn_set_fit(new_cb, true, true);
lv_btn_set_toggle(new_cb, true);
lv_obj_set_protect(new_cb, LV_PROTECT_PRESS_LOST);
/*Set the default styles*/
lv_theme_t * th = lv_theme_get_current();
if(th) {
lv_cb_set_style(new_cb, LV_CB_STYLE_BG, th->cb.bg);
lv_cb_set_style(new_cb, LV_CB_STYLE_BOX_REL, th->cb.box.rel);
lv_cb_set_style(new_cb, LV_CB_STYLE_BOX_PR, th->cb.box.pr);
lv_cb_set_style(new_cb, LV_CB_STYLE_BOX_TGL_REL, th->cb.box.tgl_rel);
lv_cb_set_style(new_cb, LV_CB_STYLE_BOX_TGL_PR, th->cb.box.tgl_pr);
lv_cb_set_style(new_cb, LV_CB_STYLE_BOX_INA, th->cb.box.ina);
} else {
lv_cb_set_style(new_cb, LV_CB_STYLE_BG, &lv_style_transp);
lv_cb_set_style(new_cb, LV_CB_STYLE_BOX_REL, &lv_style_pretty);
}
} else {
lv_cb_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
ext->bullet = lv_btn_create(new_cb, copy_ext->bullet);
ext->label = lv_label_create(new_cb, copy_ext->label);
/*Refresh the style with new signal function*/
lv_obj_refresh_style(new_cb);
}
lv_obj_set_design_func(ext->bullet, lv_bullet_design);
LV_LOG_INFO("check box created");
return new_cb;
}
/*=====================
* Setter functions
*====================*/
/**
* Set the text of a check box
* @param cb pointer to a check box
* @param txt the text of the check box
*/
void lv_cb_set_text(lv_obj_t * cb, const char * txt)
{
lv_cb_ext_t * ext = lv_obj_get_ext_attr(cb);
lv_label_set_text(ext->label, txt);
}
/**
* Set a style of a check box
* @param cb pointer to check box object
* @param type which style should be set
* @param style pointer to a style
* */
void lv_cb_set_style(lv_obj_t * cb, lv_cb_style_t type, lv_style_t * style)
{
lv_cb_ext_t * ext = lv_obj_get_ext_attr(cb);
switch(type) {
case LV_CB_STYLE_BG:
lv_btn_set_style(cb, LV_BTN_STYLE_REL, style);
lv_btn_set_style(cb, LV_BTN_STYLE_PR, style);
lv_btn_set_style(cb, LV_BTN_STYLE_TGL_REL, style);
lv_btn_set_style(cb, LV_BTN_STYLE_TGL_PR, style);
lv_btn_set_style(cb, LV_BTN_STYLE_INA, style);
break;
case LV_CB_STYLE_BOX_REL:
lv_btn_set_style(ext->bullet, LV_BTN_STYLE_REL, style);
break;
case LV_CB_STYLE_BOX_PR:
lv_btn_set_style(ext->bullet, LV_BTN_STYLE_PR, style);
break;
case LV_CB_STYLE_BOX_TGL_REL:
lv_btn_set_style(ext->bullet, LV_BTN_STYLE_TGL_REL, style);
break;
case LV_CB_STYLE_BOX_TGL_PR:
lv_btn_set_style(ext->bullet, LV_BTN_STYLE_TGL_PR, style);
break;
case LV_CB_STYLE_BOX_INA:
lv_btn_set_style(ext->bullet, LV_BTN_STYLE_INA, style);
break;
}
}
/*=====================
* Getter functions
*====================*/
/**
* Get the text of a check box
* @param cb pointer to check box object
* @return pointer to the text of the check box
*/
const char * lv_cb_get_text(const lv_obj_t * cb)
{
lv_cb_ext_t * ext = lv_obj_get_ext_attr(cb);
return lv_label_get_text(ext->label);
}
/**
* Get a style of a button
* @param cb pointer to check box object
* @param type which style should be get
* @return style pointer to the style
* */
lv_style_t * lv_cb_get_style(const lv_obj_t * cb, lv_cb_style_t type)
{
lv_style_t * style = NULL;
lv_cb_ext_t * ext = lv_obj_get_ext_attr(cb);
switch(type) {
case LV_CB_STYLE_BOX_REL:
style = lv_btn_get_style(ext->bullet, LV_BTN_STYLE_REL);
break;
case LV_CB_STYLE_BOX_PR:
style = lv_btn_get_style(ext->bullet, LV_BTN_STYLE_PR);
break;
case LV_CB_STYLE_BOX_TGL_REL:
style = lv_btn_get_style(ext->bullet, LV_BTN_STYLE_TGL_REL);
break;
case LV_CB_STYLE_BOX_TGL_PR:
style = lv_btn_get_style(ext->bullet, LV_BTN_STYLE_TGL_PR);
break;
case LV_CB_STYLE_BOX_INA:
style = lv_btn_get_style(ext->bullet, LV_BTN_STYLE_INA);
break;
default:
style = NULL;
break;
}
return style;
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Handle the drawing related tasks of the check boxes
* @param cb pointer to an object
* @param mask the object will be drawn only in this area
* @param mode LV_DESIGN_COVER_CHK: only check if the object fully covers the 'mask_p' area
* (return 'true' if yes)
* LV_DESIGN_DRAW: draw the object (always return 'true')
* LV_DESIGN_DRAW_POST: drawing after every children are drawn
* @param return true/false, depends on 'mode'
*/
static bool lv_cb_design(lv_obj_t * cb, const lv_area_t * mask, lv_design_mode_t mode)
{
bool result = true;
if(mode == LV_DESIGN_COVER_CHK) {
/*Return false if the object is not covers the mask_p area*/
result = ancestor_bg_design(cb, mask, mode);
} else if(mode == LV_DESIGN_DRAW_MAIN || mode == LV_DESIGN_DRAW_POST) {
lv_cb_ext_t * cb_ext = lv_obj_get_ext_attr(cb);
lv_btn_ext_t * bullet_ext = lv_obj_get_ext_attr(cb_ext->bullet);
/*Be sure the state of the bullet is the same as the parent button*/
bullet_ext->state = cb_ext->bg_btn.state;
result = ancestor_bg_design(cb, mask, mode);
} else {
result = ancestor_bg_design(cb, mask, mode);
}
return result;
}
/**
* Handle the drawing related tasks of the check boxes
* @param bullet pointer to an object
* @param mask the object will be drawn only in this area
* @param mode LV_DESIGN_COVER_CHK: only check if the object fully covers the 'mask_p' area
* (return 'true' if yes)
* LV_DESIGN_DRAW: draw the object (always return 'true')
* LV_DESIGN_DRAW_POST: drawing after every children are drawn
* @param return true/false, depends on 'mode'
*/
static bool lv_bullet_design(lv_obj_t * bullet, const lv_area_t * mask, lv_design_mode_t mode)
{
if(mode == LV_DESIGN_COVER_CHK) {
return ancestor_bullet_design(bullet, mask, mode);
} else if(mode == LV_DESIGN_DRAW_MAIN) {
#if USE_LV_GROUP
/* If the check box is the active in a group and
* the background is not visible (transparent or empty)
* then activate the style of the bullet*/
lv_style_t * style_ori = lv_obj_get_style(bullet);
lv_obj_t * bg = lv_obj_get_parent(bullet);
lv_style_t * style_page = lv_obj_get_style(bg);
lv_group_t * g = lv_obj_get_group(bg);
if(style_page->body.empty != 0 || style_page->body.opa == LV_OPA_TRANSP) { /*Background is visible?*/
if(lv_group_get_focused(g) == bg) {
lv_style_t * style_mod;
style_mod = lv_group_mod_style(g, style_ori);
bullet->style_p = style_mod; /*Temporally change the style to the activated */
}
}
#endif
ancestor_bullet_design(bullet, mask, mode);
#if USE_LV_GROUP
bullet->style_p = style_ori; /*Revert the style*/
#endif
} else if(mode == LV_DESIGN_DRAW_POST) {
ancestor_bullet_design(bullet, mask, mode);
}
return true;
}
/**
* Signal function of the check box
* @param cb pointer to a check box 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_cb_signal(lv_obj_t * cb, lv_signal_t sign, void * param)
{
lv_res_t res;
/* Include the ancient signal function */
res = ancestor_signal(cb, sign, param);
if(res != LV_RES_OK) return res;
lv_cb_ext_t * ext = lv_obj_get_ext_attr(cb);
if(sign == LV_SIGNAL_STYLE_CHG) {
lv_style_t * label_style = lv_label_get_style(ext->label);
lv_obj_set_size(ext->bullet, lv_font_get_height(label_style->text.font), lv_font_get_height(label_style->text.font));
lv_btn_set_state(ext->bullet, lv_btn_get_state(cb));
} else if(sign == LV_SIGNAL_PRESSED ||
sign == LV_SIGNAL_RELEASED ||
sign == LV_SIGNAL_PRESS_LOST) {
lv_btn_set_state(ext->bullet, lv_btn_get_state(cb));
} else if(sign == LV_SIGNAL_CONTROLL) {
char c = *((char *)param);
if(c == LV_GROUP_KEY_RIGHT || c == LV_GROUP_KEY_DOWN ||
c == LV_GROUP_KEY_LEFT || c == LV_GROUP_KEY_UP ||
c == LV_GROUP_KEY_ENTER) {
lv_btn_set_state(ext->bullet, lv_btn_get_state(cb));
}
} 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_cb";
}
return res;
}
#endif