LVGL 库提交

2026-08-30 08:57:07 +08:00
parent 26c9098630
commit e2f199c6bf
1056 changed files with 556743 additions and 45 deletions
@@ -0,0 +1,122 @@
+/**
+ * @file lv_theme.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_theme_private.h"
+#include "../core/lv_obj_private.h"
+#include "../core/lv_obj_class_private.h"
+#include "../../lvgl.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+static void apply_theme(lv_theme_t * th, lv_obj_t * obj);
+static void apply_theme_recursion(lv_theme_t * th, lv_obj_t * obj);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+lv_theme_t  * lv_theme_get_from_obj(lv_obj_t * obj)
+{
+    lv_display_t * disp = obj ? lv_obj_get_display(obj) : lv_display_get_default();
+    return lv_display_get_theme(disp);
+}
+
+void lv_theme_apply(lv_obj_t * obj)
+{
+    lv_theme_t * th = lv_theme_get_from_obj(obj);
+    if(th == NULL) return;
+
+    lv_obj_remove_style_all(obj);
+
+    apply_theme_recursion(th, obj);    /*Apply the theme including the base theme(s)*/
+}
+
+void lv_theme_set_parent(lv_theme_t * new_theme, lv_theme_t * base)
+{
+    new_theme->parent = base;
+}
+
+void lv_theme_set_apply_cb(lv_theme_t * theme, lv_theme_apply_cb_t apply_cb)
+{
+    theme->apply_cb = apply_cb;
+}
+
+const lv_font_t * lv_theme_get_font_small(lv_obj_t * obj)
+{
+    lv_theme_t * th = lv_theme_get_from_obj(obj);
+    return th ? th->font_small : LV_FONT_DEFAULT;
+}
+
+const lv_font_t * lv_theme_get_font_normal(lv_obj_t * obj)
+{
+    lv_theme_t * th = lv_theme_get_from_obj(obj);
+    return th ? th->font_normal : LV_FONT_DEFAULT;
+}
+
+const lv_font_t * lv_theme_get_font_large(lv_obj_t * obj)
+{
+    lv_theme_t * th = lv_theme_get_from_obj(obj);
+    return th ? th->font_large : LV_FONT_DEFAULT;
+}
+
+lv_color_t lv_theme_get_color_primary(lv_obj_t * obj)
+{
+    lv_theme_t * th = lv_theme_get_from_obj(obj);
+    return th ? th->color_primary : lv_palette_main(LV_PALETTE_BLUE_GREY);
+}
+
+lv_color_t lv_theme_get_color_secondary(lv_obj_t * obj)
+{
+    lv_theme_t * th = lv_theme_get_from_obj(obj);
+    return th ? th->color_secondary : lv_palette_main(LV_PALETTE_BLUE);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+static void apply_theme(lv_theme_t * th, lv_obj_t * obj)
+{
+    if(th->parent) apply_theme(th->parent, obj);
+    if(th->apply_cb) th->apply_cb(th, obj);
+}
+
+static void apply_theme_recursion(lv_theme_t * th, lv_obj_t * obj)
+{
+    const lv_obj_class_t * original_class_p = obj->class_p;
+
+    if(obj->class_p->base_class && obj->class_p->theme_inheritable == LV_OBJ_CLASS_THEME_INHERITABLE_TRUE) {
+        /*Apply the base class theme in obj*/
+        obj->class_p = obj->class_p->base_class;
+
+        /*apply the base first*/
+        apply_theme_recursion(th, obj);
+    }
+
+    /*Restore the original class*/
+    obj->class_p = original_class_p;
+
+    apply_theme(th, obj);
+}