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add lv_obj_get_type

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This commit is contained in:
Gabor Kiss-Vamosi
2018-02-28 15:37:41 +01:00
parent e4b677be3d
commit 05fe9b6b81
26 changed files with 254 additions and 13 deletions
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55
lv_core/lv_obj.c
View File

@@ -1353,6 +1353,34 @@ void * lv_obj_get_ext_attr(lv_obj_t * obj)
return obj->ext_attr;
}
/**
* Get object's and its ancestors type. Put their name in `type_buf` starting with the current type.
* E.g. buf.type[0]="lv_btn", buf.type[1]="lv_cont", buf.type[2]="lv_obj"
* @param obj pointer to an object which type should be get
* @param buf pointer to an `lv_obj_type_t` buffer to store the types
*/
void lv_obj_get_type(lv_obj_t * obj, lv_obj_type_t * buf)
{
lv_obj_type_t tmp;
memset(buf, 0, sizeof(lv_obj_type_t));
memset(&tmp, 0, sizeof(lv_obj_type_t));
obj->signal_func(obj, LV_SIGNAL_GET_TYPE, &tmp);
uint8_t cnt;
for(cnt = 0; cnt < LV_MAX_ANCESTOR_NUM; cnt++) {
if(tmp.type[cnt] == NULL) break;
}
/*Swap the order. The real type comes first*/
uint8_t i;
for(i = 0; i < cnt; i++) {
buf->type[i] = tmp.type[cnt - 1 - i];
}
}
#ifdef LV_OBJ_FREE_NUM_TYPE
/**
* Get the free number
@@ -1377,6 +1405,7 @@ void * lv_obj_get_free_ptr(lv_obj_t * obj)
}
#endif
#if USE_LV_GROUP
/**
* Get the group of the object
@@ -1451,19 +1480,19 @@ static lv_res_t lv_obj_signal(lv_obj_t * obj, lv_signal_t sign, void * param)
lv_res_t res = LV_RES_OK;
lv_style_t * style = lv_obj_get_style(obj);
switch(sign) {
case LV_SIGNAL_CHILD_CHG:
/*Return 'invalid' if the child change signal is not enabled*/
if(lv_obj_is_protected(obj, LV_PROTECT_CHILD_CHG) != false) res = LV_RES_INV;
break;
case LV_SIGNAL_REFR_EXT_SIZE:
if(style->body.shadow.width > obj->ext_size) obj->ext_size = style->body.shadow.width;
break;
case LV_SIGNAL_STYLE_CHG:
lv_obj_refresh_ext_size(obj);
break;
default:
break;
if(sign == LV_SIGNAL_CHILD_CHG) {
/*Return 'invalid' if the child change signal is not enabled*/
if(lv_obj_is_protected(obj, LV_PROTECT_CHILD_CHG) != false) res = LV_RES_INV;
}
else if(sign == LV_SIGNAL_REFR_EXT_SIZE) {
if(style->body.shadow.width > obj->ext_size) obj->ext_size = style->body.shadow.width;
}
else if(sign == LV_SIGNAL_STYLE_CHG) {
lv_obj_refresh_ext_size(obj);
}
else if(sign == LV_SIGNAL_GET_TYPE) {
lv_obj_type_t * buf = param;
buf->type[0] = "lv_obj";
}
return res;

16
lv_core/lv_obj.h
View File

@@ -52,6 +52,7 @@ extern "C" {
#define LV_ANIM_OUT 0x80 /*Animation to hide an object. 'OR' it with lv_anim_builtin_t*/
#define LV_ANIM_DIR_MASK 0x80 /*ANIM_IN/ANIM_OUT mask*/
#define LV_MAX_ANCESTOR_NUM 8
/**********************
* TYPEDEFS
**********************/
@@ -81,6 +82,7 @@ typedef enum
LV_SIGNAL_CORD_CHG,
LV_SIGNAL_STYLE_CHG,
LV_SIGNAL_REFR_EXT_SIZE,
LV_SIGNAL_GET_TYPE,
/*Input device related*/
LV_SIGNAL_PRESSED,
@@ -151,6 +153,12 @@ typedef enum
LV_PROTECT_PRESS_LOST= 0x10, /*TODO */
}lv_protect_t;
/*Used by `lv_obj_get_type()`. The object's and its ancestor types are stored here*/
typedef struct {
const char * type[LV_MAX_ANCESTOR_NUM]; /*[0]: the actual type, [1]: ancestor, [2] #1's ancestor ... [x]: "lv_obj" */
}lv_obj_type_t;
typedef enum
{
LV_ALIGN_CENTER = 0,
@@ -677,6 +685,14 @@ lv_design_func_t lv_obj_get_design_func(lv_obj_t * obj);
*/
void * lv_obj_get_ext_attr(lv_obj_t * obj);
/**
* Get object's and its ancestors type. Put their name in `type_buf` starting with the current type.
* E.g. buf.type[0]="lv_btn", buf.type[1]="lv_cont", buf.type[2]="lv_obj"
* @param obj pointer to an object which type should be get
* @param buf pointer to an `lv_obj_type_t` buffer to store the types
*/
void lv_obj_get_type(lv_obj_t * obj, lv_obj_type_t * buf);
#ifdef LV_OBJ_FREE_NUM_TYPE
/**
* Get the free number