1 /**
2 * @file lv_theme_empty.c
3 *
4 */
5
6 /*********************
7 * INCLUDES
8 *********************/
9 #include <stdint.h>
10 #include "../../lvgl.h" /*To see all the widgets*/
11
12 #if LV_USE_THEME_EMPTY
13
14 #include "../lv_misc/lv_gc.h"
15
16 #if defined(LV_GC_INCLUDE)
17 #include LV_GC_INCLUDE
18 #endif /* LV_ENABLE_GC */
19
20 /*********************
21 * DEFINES
22 *********************/
23
24 /**********************
25 * TYPEDEFS
26 **********************/
27 typedef struct {
28 lv_style_t opa_cover;
29 } theme_styles_t;
30
31 /**********************
32 * STATIC PROTOTYPES
33 **********************/
34 static void theme_apply(lv_theme_t * th, lv_obj_t * obj, lv_theme_style_t name);
35 static void style_init_reset(lv_style_t * style);
36
37 /**********************
38 * STATIC VARIABLES
39 **********************/
40 static lv_theme_t theme;
41 static theme_styles_t * styles;
42
43 static bool inited;
44
45 /**********************
46 * MACROS
47 **********************/
48
49 /**********************
50 * STATIC FUNCTIONS
51 **********************/
52
53 /**********************
54 * GLOBAL FUNCTIONS
55 **********************/
56
57 /**
58 * Initialize the default
59 * @param color_primary the primary color of the theme
60 * @param color_secondary the secondary color for the theme
61 * @param flags ORed flags starting with `LV_THEME_DEF_FLAG_...`
62 * @param font_small pointer to a small font
63 * @param font_normal pointer to a normal font
64 * @param font_subtitle pointer to a large font
65 * @param font_title pointer to a extra large font
66 * @return a pointer to reference this theme later
67 */
lv_theme_empty_init(lv_color_t color_primary,lv_color_t color_secondary,uint32_t flags,const lv_font_t * font_small,const lv_font_t * font_normal,const lv_font_t * font_subtitle,const lv_font_t * font_title)68 lv_theme_t * lv_theme_empty_init(lv_color_t color_primary, lv_color_t color_secondary, uint32_t flags,
69 const lv_font_t * font_small, const lv_font_t * font_normal, const lv_font_t * font_subtitle,
70 const lv_font_t * font_title)
71 {
72 /* This trick is required only to avoid the garbage collection of
73 * styles' data if LVGL is used in a binding (e.g. Micropython)
74 * In a general case styles could be simple `static lv_style_t my style` variables*/
75 if(!inited) {
76 LV_GC_ROOT(_lv_theme_empty_styles) = lv_mem_alloc(sizeof(theme_styles_t));
77 styles = (theme_styles_t *)LV_GC_ROOT(_lv_theme_empty_styles);
78 }
79
80
81 theme.color_primary = color_primary;
82 theme.color_secondary = color_secondary;
83 theme.font_small = font_small;
84 theme.font_normal = font_normal;
85 theme.font_subtitle = font_subtitle;
86 theme.font_title = font_title;
87 theme.flags = flags;
88
89 style_init_reset(&styles->opa_cover);
90 lv_style_set_bg_opa(&styles->opa_cover, LV_STATE_DEFAULT, LV_OPA_COVER);
91
92 theme.apply_xcb = NULL;
93 theme.apply_cb = theme_apply;
94 return &theme;
95 }
96
97
theme_apply(lv_theme_t * th,lv_obj_t * obj,lv_theme_style_t name)98 static void theme_apply(lv_theme_t * th, lv_obj_t * obj, lv_theme_style_t name)
99 {
100 LV_UNUSED(th);
101 if(name == LV_THEME_SCR) {
102 lv_obj_clean_style_list(obj, LV_OBJ_PART_MAIN);
103 lv_obj_add_style(obj, LV_OBJ_PART_MAIN, &styles->opa_cover);
104 }
105 }
106
107 /**********************
108 * STATIC FUNCTIONS
109 **********************/
110
style_init_reset(lv_style_t * style)111 static void style_init_reset(lv_style_t * style)
112 {
113 if(inited) lv_style_reset(style);
114 else lv_style_init(style);
115 }
116
117 #endif
118
