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include/liblvgl/core/lv_obj_class.h

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+/**
+ * @file lv_obj_class.h
+ *
+ */
+
+#ifndef LV_OBJ_CLASS_H
+#define LV_OBJ_CLASS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include <stdint.h>
+#include <stdbool.h>
+
+/*********************
+ *      DEFINES
+ *********************/
+
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+struct _lv_obj_t;
+struct _lv_obj_class_t;
+struct _lv_event_t;
+
+typedef enum {
+    LV_OBJ_CLASS_EDITABLE_INHERIT,      /**< Check the base class. Must have 0 value to let zero initialized class inherit*/
+    LV_OBJ_CLASS_EDITABLE_TRUE,
+    LV_OBJ_CLASS_EDITABLE_FALSE,
+} lv_obj_class_editable_t;
+
+typedef enum {
+    LV_OBJ_CLASS_GROUP_DEF_INHERIT,      /**< Check the base class. Must have 0 value to let zero initialized class inherit*/
+    LV_OBJ_CLASS_GROUP_DEF_TRUE,
+    LV_OBJ_CLASS_GROUP_DEF_FALSE,
+} lv_obj_class_group_def_t;
+
+typedef void (*lv_obj_class_event_cb_t)(struct _lv_obj_class_t * class_p, struct _lv_event_t * e);
+/**
+ * Describe the common methods of every object.
+ * Similar to a C++ class.
+ */
+typedef struct _lv_obj_class_t {
+    const struct _lv_obj_class_t * base_class;
+    void (*constructor_cb)(const struct _lv_obj_class_t * class_p, struct _lv_obj_t * obj);
+    void (*destructor_cb)(const struct _lv_obj_class_t * class_p, struct _lv_obj_t * obj);
+#if LV_USE_USER_DATA
+    void * user_data;
+#endif
+    void (*event_cb)(const struct _lv_obj_class_t * class_p,
+                     struct _lv_event_t * e);  /**< Widget type specific event function*/
+    lv_coord_t width_def;
+    lv_coord_t height_def;
+    uint32_t editable : 2;             /**< Value from ::lv_obj_class_editable_t*/
+    uint32_t group_def : 2;            /**< Value from ::lv_obj_class_group_def_t*/
+    uint32_t instance_size : 16;
+} lv_obj_class_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Create an object form a class descriptor
+ * @param class_p   pointer to a class
+ * @param parent    pointer to an object where the new object should be created
+ * @return          pointer to the created object
+ */
+struct _lv_obj_t * lv_obj_class_create_obj(const struct _lv_obj_class_t * class_p, struct _lv_obj_t * parent);
+
+void lv_obj_class_init_obj(struct _lv_obj_t * obj);
+
+void _lv_obj_destruct(struct _lv_obj_t * obj);
+
+bool lv_obj_is_editable(struct _lv_obj_t * obj);
+
+bool lv_obj_is_group_def(struct _lv_obj_t * obj);
+
+/**********************
+ *      MACROS
+ **********************/
+
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_OBJ_CLASS_H*/