1 /**
2 * @file lv_theme.c
3 *
4 */
5
6 /*********************
7 * INCLUDES
8 *********************/
9 #include "lv_theme_private.h"
10 #include "../core/lv_obj_private.h"
11 #include "../core/lv_obj_class_private.h"
12 #include "../../lvgl.h"
13
14 /*********************
15 * DEFINES
16 *********************/
17
18 /**********************
19 * TYPEDEFS
20 **********************/
21
22 /**********************
23 * STATIC PROTOTYPES
24 **********************/
25 static void apply_theme(lv_theme_t * th, lv_obj_t * obj);
26 static void apply_theme_recursion(lv_theme_t * th, lv_obj_t * obj);
27
28 /**********************
29 * STATIC VARIABLES
30 **********************/
31
32 /**********************
33 * MACROS
34 **********************/
35
36 /**********************
37 * GLOBAL FUNCTIONS
38 **********************/
39
lv_theme_get_from_obj(lv_obj_t * obj)40 lv_theme_t * lv_theme_get_from_obj(lv_obj_t * obj)
41 {
42 lv_display_t * disp = obj ? lv_obj_get_display(obj) : lv_display_get_default();
43 return lv_display_get_theme(disp);
44 }
45
lv_theme_apply(lv_obj_t * obj)46 void lv_theme_apply(lv_obj_t * obj)
47 {
48 lv_theme_t * th = lv_theme_get_from_obj(obj);
49 if(th == NULL) return;
50
51 lv_obj_remove_style_all(obj);
52
53 apply_theme_recursion(th, obj); /*Apply the theme including the base theme(s)*/
54 }
55
lv_theme_set_parent(lv_theme_t * new_theme,lv_theme_t * base)56 void lv_theme_set_parent(lv_theme_t * new_theme, lv_theme_t * base)
57 {
58 new_theme->parent = base;
59 }
60
lv_theme_set_apply_cb(lv_theme_t * theme,lv_theme_apply_cb_t apply_cb)61 void lv_theme_set_apply_cb(lv_theme_t * theme, lv_theme_apply_cb_t apply_cb)
62 {
63 theme->apply_cb = apply_cb;
64 }
65
lv_theme_get_font_small(lv_obj_t * obj)66 const lv_font_t * lv_theme_get_font_small(lv_obj_t * obj)
67 {
68 lv_theme_t * th = lv_theme_get_from_obj(obj);
69 return th ? th->font_small : LV_FONT_DEFAULT;
70 }
71
lv_theme_get_font_normal(lv_obj_t * obj)72 const lv_font_t * lv_theme_get_font_normal(lv_obj_t * obj)
73 {
74 lv_theme_t * th = lv_theme_get_from_obj(obj);
75 return th ? th->font_normal : LV_FONT_DEFAULT;
76 }
77
lv_theme_get_font_large(lv_obj_t * obj)78 const lv_font_t * lv_theme_get_font_large(lv_obj_t * obj)
79 {
80 lv_theme_t * th = lv_theme_get_from_obj(obj);
81 return th ? th->font_large : LV_FONT_DEFAULT;
82 }
83
lv_theme_get_color_primary(lv_obj_t * obj)84 lv_color_t lv_theme_get_color_primary(lv_obj_t * obj)
85 {
86 lv_theme_t * th = lv_theme_get_from_obj(obj);
87 return th ? th->color_primary : lv_palette_main(LV_PALETTE_BLUE_GREY);
88 }
89
lv_theme_get_color_secondary(lv_obj_t * obj)90 lv_color_t lv_theme_get_color_secondary(lv_obj_t * obj)
91 {
92 lv_theme_t * th = lv_theme_get_from_obj(obj);
93 return th ? th->color_secondary : lv_palette_main(LV_PALETTE_BLUE);
94 }
95
96 /**********************
97 * STATIC FUNCTIONS
98 **********************/
99
apply_theme(lv_theme_t * th,lv_obj_t * obj)100 static void apply_theme(lv_theme_t * th, lv_obj_t * obj)
101 {
102 if(th->parent) apply_theme(th->parent, obj);
103 if(th->apply_cb) th->apply_cb(th, obj);
104 }
105
apply_theme_recursion(lv_theme_t * th,lv_obj_t * obj)106 static void apply_theme_recursion(lv_theme_t * th, lv_obj_t * obj)
107 {
108 const lv_obj_class_t * original_class_p = obj->class_p;
109
110 if(obj->class_p->base_class && obj->class_p->theme_inheritable == LV_OBJ_CLASS_THEME_INHERITABLE_TRUE) {
111 /*Apply the base class theme in obj*/
112 obj->class_p = obj->class_p->base_class;
113
114 /*apply the base first*/
115 apply_theme_recursion(th, obj);
116 }
117
118 /*Restore the original class*/
119 obj->class_p = original_class_p;
120
121 apply_theme(th, obj);
122 }
123
