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feat(theme):add ability to inhrit theme from base class (#3770)

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Signed-off-by: wangxuedong <wangxuedong@xiaomi.com>
This commit is contained in:
xaowang96 2022-10-29 22:39:29 +08:00 committed by GitHub
parent 6e62fcfd08
commit 532a3ebbc7
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 26 additions and 1 deletions
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6
src/core/lv_obj_class.h
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@ -41,6 +41,11 @@ typedef enum {
LV_OBJ_CLASS_GROUP_DEF_FALSE,
} lv_obj_class_group_def_t;
typedef enum {
LV_OBJ_CLASS_THEME_INHERITABLE_FALSE, /**< Do not inherit theme from base class. */
LV_OBJ_CLASS_THEME_INHERITABLE_TRUE,
} lv_obj_class_theme_inheritable_t;
typedef void (*lv_obj_class_event_cb_t)(struct _lv_obj_class_t * class_p, struct _lv_event_t * e);
/**
* Describe the common methods of every object.
@ -60,6 +65,7 @@ typedef struct _lv_obj_class_t {
uint32_t editable : 2; /**< Value from ::lv_obj_class_editable_t*/
uint32_t group_def : 2; /**< Value from ::lv_obj_class_group_def_t*/
uint32_t instance_size : 16;
uint32_t theme_inheritable : 1; /**< Value from ::lv_obj_class_theme_inheritable_t*/
} lv_obj_class_t;
/**********************

21
src/core/lv_theme.c
View File

@ -20,6 +20,7 @@
* STATIC PROTOTYPES
**********************/
static void apply_theme(lv_theme_t * th, lv_obj_t * obj);
static void apply_theme_recursion(lv_theme_t * th, lv_obj_t * obj);
/**********************
* STATIC VARIABLES
@ -51,7 +52,7 @@ void lv_theme_apply(lv_obj_t * obj)
lv_obj_remove_style_all(obj);
apply_theme(th, obj); /*Apply the theme including the base theme(s)*/
apply_theme_recursion(th, obj); /*Apply the theme including the base theme(s)*/
}
/**
@ -116,3 +117,21 @@ static void apply_theme(lv_theme_t * th, lv_obj_t * obj)
if(th->parent) apply_theme(th->parent, obj);
if(th->apply_cb) th->apply_cb(th, obj);
}
static void apply_theme_recursion(lv_theme_t * th, lv_obj_t * obj)
{
const lv_obj_class_t * original_class_p = obj->class_p;
if(obj->class_p->base_class && obj->class_p->theme_inheritable == LV_OBJ_CLASS_THEME_INHERITABLE_TRUE) {
/*Apply the base class theme in obj*/
obj->class_p = obj->class_p->base_class;
/*apply the base first*/
apply_theme_recursion(th, obj);
}
/*Restore the original class*/
obj->class_p = original_class_p;
apply_theme(th, obj);
}