lv_theme.h

lv_theme_set_parent

Set a base theme for a theme. The styles from the base them will be added before the styles of the current theme. Arbitrary long chain of themes can be created by setting base themes.

void lv_theme_set_parent(lv_theme_t *theme, lv_theme_t *parent)

lv_theme_set_apply_cb

Set an apply callback for a theme. The apply callback is used to add styles to different objects

void lv_theme_set_apply_cb(lv_theme_t *theme, lv_theme_apply_cb_t apply_cb)

lv_theme_set_user_data

Set the user_data field of the theme

void lv_theme_set_user_data(lv_theme_t *theme, void *user_data)

lv_theme_set_external_data

Attaches external user data and destructor callback to the theme.

Associates custom user data with an LVGL theme and specifies a destructor function that will be automatically invoked when the theme is deleted to properly clean up the associated resources.

void lv_theme_set_external_data(lv_theme_t *theme, void *user_data, void(*free_cb)(void *data))

lv_theme_get_from_obj

Get the theme assigned to the display of the object

lv_theme_t * lv_theme_get_from_obj(lv_obj_t *obj)

Returns: lv_theme_t * — the theme of the object's display (can be NULL)

lv_theme_get_font_small

Get the small font of the theme

const lv_font_t * lv_theme_get_font_small(lv_obj_t *obj)

Returns: const lv_font_t * — pointer to the font

lv_theme_get_font_normal

Get the normal font of the theme

const lv_font_t * lv_theme_get_font_normal(lv_obj_t *obj)

Returns: const lv_font_t * — pointer to the font

lv_theme_get_font_large

Get the subtitle font of the theme

const lv_font_t * lv_theme_get_font_large(lv_obj_t *obj)

Returns: const lv_font_t * — pointer to the font

lv_theme_get_color_primary

Get the primary color of the theme

lv_color_t lv_theme_get_color_primary(lv_obj_t *obj)

Returns: lv_color_t — the color

lv_theme_get_color_secondary

Get the secondary color of the theme

lv_color_t lv_theme_get_color_secondary(lv_obj_t *obj)

Returns: lv_color_t — the color

lv_theme_get_user_data

Get the user_data field of the theme

void * lv_theme_get_user_data(const lv_theme_t *theme)

Returns: void * — the pointer to the user_data of the theme (can be NULL if not set)

lv_theme_create

Creates a new theme

lv_theme_t * lv_theme_create(void)

Returns: lv_theme_t * — the new theme or NULL if allocation failed

lv_theme_copy

Copy 'src' theme into 'dst'

void lv_theme_copy(lv_theme_t *dst, const lv_theme_t *src)

lv_theme_apply

Apply the active theme on an object

void lv_theme_apply(lv_obj_t *obj)

lv_theme_delete

Delete a theme

void lv_theme_delete(lv_theme_t *theme)