mirror of
https://github.com/suchmememanyskill/TegraExplorer.git
synced 2024-11-26 22:02:08 +00:00
112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
/**
|
|
* @file lv_theme.c
|
|
*
|
|
*/
|
|
|
|
/*********************
|
|
* INCLUDES
|
|
*********************/
|
|
#include "lv_theme.h"
|
|
#include "../lv_core/lv_obj.h"
|
|
|
|
/*********************
|
|
* DEFINES
|
|
*********************/
|
|
|
|
/**********************
|
|
* TYPEDEFS
|
|
**********************/
|
|
|
|
/**********************
|
|
* STATIC PROTOTYPES
|
|
**********************/
|
|
|
|
/**********************
|
|
* STATIC VARIABLES
|
|
**********************/
|
|
|
|
#if LV_THEME_LIVE_UPDATE == 0
|
|
static lv_theme_t * current_theme;
|
|
#else
|
|
/* If live update is used then a big `lv_style_t` array is used to store the real styles of the theme not only pointers.
|
|
* On `lv_theme_set_current` the styles of the theme are copied to this array.
|
|
* The pointers in `current_theme` are initialized to point to the styles in the array.
|
|
* This way the theme styles will always point to the same memory address even after theme is change.
|
|
* (The pointers in the theme points to the styles declared by the theme itself) */
|
|
|
|
/* Store the styles in this array.
|
|
* Can't determine the size in compile time because sizeof is not evaluated (should be `sizeof(lv_theme_t) / sizeof(lv_style_t*)`).
|
|
* Error will be generated in run time if too small.*/
|
|
static lv_style_t th_styles[120];
|
|
static bool inited = false;
|
|
static lv_theme_t current_theme;
|
|
#endif
|
|
|
|
/**********************
|
|
* MACROS
|
|
**********************/
|
|
|
|
/**********************
|
|
* GLOBAL FUNCTIONS
|
|
**********************/
|
|
|
|
/**
|
|
* Set a theme for the system.
|
|
* From now, all the created objects will use styles from this theme by default
|
|
* @param th pointer to theme (return value of: 'lv_theme_init_xxx()')
|
|
*/
|
|
void lv_theme_set_current(lv_theme_t * th)
|
|
{
|
|
#if LV_THEME_LIVE_UPDATE == 0
|
|
current_theme = th;
|
|
#else
|
|
uint32_t style_num = sizeof(lv_theme_t) / sizeof(lv_style_t *); /*Number of styles in a theme*/
|
|
|
|
if(!inited) {
|
|
/*It's not sure `th_styles` is big enough. Check it now!*/
|
|
if(style_num > sizeof(th_styles) / sizeof(lv_style_t)) {
|
|
LV_LOG_ERROR("Themes: th_styles array is too small. Increase it's size!");
|
|
while(1);
|
|
}
|
|
|
|
/*Initialize the style pointers `current_theme` to point to the `th_styles` style array */
|
|
uint16_t i;
|
|
lv_style_t ** cur_th_style_p = (lv_style_t **) ¤t_theme;
|
|
for(i = 0; i < style_num; i++) {
|
|
uintptr_t adr = (uintptr_t)&th_styles[i];
|
|
memcpy(&cur_th_style_p[i], &adr, sizeof(lv_style_t *));
|
|
}
|
|
inited = true;
|
|
}
|
|
|
|
|
|
/*Copy the styles pointed by the new theme to the `th_styles` style array*/
|
|
uint16_t i;
|
|
lv_style_t ** th_style = (lv_style_t **) th;
|
|
for(i = 0; i < style_num; i++) {
|
|
uintptr_t s = (uintptr_t)th_style[i];
|
|
if(s) memcpy(&th_styles[i], (void *)s, sizeof(lv_style_t));
|
|
}
|
|
|
|
/*Let the object know their style might change*/
|
|
lv_obj_report_style_mod(NULL);
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* Get the current system theme.
|
|
* @return pointer to the current system theme. NULL if not set.
|
|
*/
|
|
lv_theme_t * lv_theme_get_current(void)
|
|
{
|
|
#if LV_THEME_LIVE_UPDATE == 0
|
|
return current_theme;
|
|
#else
|
|
if(!inited) return NULL;
|
|
else return ¤t_theme;
|
|
#endif
|
|
}
|
|
|
|
/**********************
|
|
* STATIC FUNCTIONS
|
|
**********************/
|