Init

inc/lvgl/src/libs/svg/lv_svg.c

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+/**
+ * @file lv_svg.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_svg.h"
+#if LV_USE_SVG
+
+#include "../../misc/lv_assert.h"
+#include "../../misc/lv_log.h"
+#include "../../stdlib/lv_mem.h"
+
+#include "lv_svg_token.h"
+#include "lv_svg_parser.h"
+
+/*********************
+*      DEFINES
+*********************/
+
+/**********************
+*      TYPEDEFS
+**********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+static void lv_svg_node_constructor(const lv_tree_class_t * class_p, lv_tree_node_t * node)
+{
+    LV_UNUSED(class_p);
+    lv_svg_node_t * t = (lv_svg_node_t *)node;
+    t->xml_id = NULL;
+    t->type = LV_SVG_TAG_INVALID;
+    lv_array_init(&t->attrs, 4, sizeof(lv_svg_attr_t));
+    t->render_obj = NULL;
+}
+
+static void lv_svg_node_destructor(const lv_tree_class_t * class_p, lv_tree_node_t * node)
+{
+    LV_UNUSED(class_p);
+    lv_svg_node_t * t = (lv_svg_node_t *)node;
+    if(t->xml_id) {
+        lv_free(t->xml_id);
+    }
+    for(uint32_t i = 0; i < lv_array_size(&t->attrs); i++) {
+        lv_svg_attr_t * attr = lv_array_at(&t->attrs, i);
+        if(attr->val_type == LV_SVG_ATTR_VALUE_PTR) {
+            lv_free(attr->value.val);
+        }
+    }
+    lv_array_deinit(&t->attrs);
+}
+
+static bool svg_token_process_cb(_lv_svg_token_t * token, void * data)
+{
+    _lv_svg_parser_t * parser = (_lv_svg_parser_t *)data;
+    return _lv_svg_parser_token(parser, token);
+}
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+const lv_tree_class_t lv_svg_node_class = {
+    .base_class = &lv_tree_node_class,
+    .instance_size = sizeof(lv_svg_node_t),
+    .constructor_cb = lv_svg_node_constructor,
+    .destructor_cb = lv_svg_node_destructor,
+};
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+lv_svg_node_t * lv_svg_load_data(const char * svg_data, uint32_t data_len)
+{
+    LV_ASSERT_NULL(svg_data);
+    LV_ASSERT(data_len > 0);
+
+    _lv_svg_parser_t parser;
+    _lv_svg_parser_init(&parser);
+
+    if(_lv_svg_tokenizer(svg_data, data_len, svg_token_process_cb, &parser)) {
+        if(_lv_svg_parser_is_finish(&parser)) {
+            lv_svg_node_t * doc = parser.doc_root;
+            parser.doc_root = NULL;
+            _lv_svg_parser_deinit(&parser);
+#if LV_USE_SVG_DEBUG
+            _lv_svg_dump_tree(doc, 0);
+#endif
+            return doc;
+        }
+        else {
+            _lv_svg_parser_deinit(&parser);
+            LV_LOG_ERROR("svg document parser raise errors!");
+            return NULL;
+        }
+    }
+    else {
+        _lv_svg_parser_deinit(&parser);
+        LV_LOG_ERROR("svg document tokenizer raise errors!");
+        return NULL;
+    }
+}
+
+lv_svg_node_t * lv_svg_node_create(lv_svg_node_t * parent)
+{
+    lv_tree_node_t * node = lv_tree_node_create(&lv_svg_node_class, (lv_tree_node_t *)parent);
+    return (lv_svg_node_t *)node;
+}
+
+void lv_svg_node_delete(lv_svg_node_t * node)
+{
+    lv_tree_node_delete((lv_tree_node_t *)node);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+#endif /*LV_USE_SVG*/