104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/**
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* @file lv_theme_empty.c
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*
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*/
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/*********************
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* INCLUDES
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*********************/
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#include "../../lvgl.h" /*To see all the widgets*/
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#if LV_USE_THEME_EMPTY
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#include "../lv_misc/lv_gc.h"
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/*********************
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* DEFINES
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*********************/
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/**********************
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* TYPEDEFS
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**********************/
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typedef struct {
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lv_style_t opa_cover;
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} theme_styles_t;
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static void theme_apply(lv_theme_t * th, lv_obj_t * obj, lv_theme_style_t name);
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/**********************
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* STATIC VARIABLES
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**********************/
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static lv_theme_t theme;
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static theme_styles_t * styles;
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/**********************
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* MACROS
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**********************/
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/**********************
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* STATIC FUNCTIONS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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/**
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* Initialize the default
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* @param color_primary the primary color of the theme
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* @param color_secondary the secondary color for the theme
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* @param flags ORed flags starting with `LV_THEME_DEF_FLAG_...`
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* @param font_small pointer to a small font
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* @param font_normal pointer to a normal font
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* @param font_subtitle pointer to a large font
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* @param font_title pointer to a extra large font
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* @return a pointer to reference this theme later
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*/
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lv_theme_t * lv_theme_empty_init(lv_color_t color_primary, lv_color_t color_secondary, uint32_t flags,
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const lv_font_t * font_small, const lv_font_t * font_normal, const lv_font_t * font_subtitle,
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const lv_font_t * font_title)
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{
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/* This trick is required only to avoid the garbage collection of
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* styles' data if LVGL is used in a binding (e.g. Micropython)
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* In a general case styles could be simple `static lv_style_t my style` variables*/
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if(styles == NULL) {
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styles = lv_mem_alloc(sizeof(theme_styles_t));
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if(styles == NULL) return NULL;
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_lv_memset_00(styles, sizeof(theme_styles_t));
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LV_GC_ROOT(_lv_theme_empty_styles) = styles;
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}
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theme.color_primary = color_primary;
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theme.color_secondary = color_secondary;
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theme.font_small = font_small;
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theme.font_normal = font_normal;
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theme.font_subtitle = font_subtitle;
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theme.font_title = font_title;
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theme.flags = flags;
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lv_style_reset(&styles->opa_cover);
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lv_style_set_bg_opa(&styles->opa_cover, LV_STATE_DEFAULT, LV_OPA_COVER);
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theme.apply_xcb = NULL;
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theme.apply_cb = theme_apply;
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return &theme;
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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static void theme_apply(lv_theme_t * th, lv_obj_t * obj, lv_theme_style_t name)
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{
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LV_UNUSED(th);
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if(name == LV_THEME_SCR) {
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lv_obj_add_style(obj, LV_OBJ_PART_MAIN, &styles->opa_cover);
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lv_obj_refresh_style(obj, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
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}
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}
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#endif
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