初步优化项目结构

lib/components/permanent/code/code_widget.dart

@@ -0,0 +1,55 @@
+
+/// create by 张风捷特烈 on 2020-04-15
+/// contact me by email 1981462002@qq.com
+/// 说明: 
+
+import 'package:flutter/material.dart';
+import 'language/dart_languge.dart';
+
+import 'high_light_code.dart';
+import 'highlighter_style.dart';
+
+class CodeWidget extends StatelessWidget {
+  CodeWidget({Key? key, required this.code,required this.style, this.fontSize = 13,this.fontFamily})
+      : super(key: key);
+
+  final String code;
+  final HighlighterStyle style;
+  final double fontSize;
+  final String? fontFamily;
+
+  @override
+  Widget build(BuildContext context) {
+    Widget body;
+    if (code == null) {
+      return Container();
+    } else {
+      Widget _codeWidget;
+      try {
+        _codeWidget = RichText(
+          text: TextSpan(
+            style: TextStyle(fontSize: fontSize,fontFamily: fontFamily),
+            children: <TextSpan>[
+              CodeHighlighter(
+                style: style,
+                language: const DartLanguage()
+            ).format(code)],
+          ),
+        );
+      } catch (err) {
+        print(err);
+        _codeWidget = Text(code);
+      }
+      body = SingleChildScrollView(
+        child: Container(
+          child: _codeWidget,
+          padding: EdgeInsets.all(10),
+          decoration: BoxDecoration(
+              color: style.backgroundColor ?? Color(0xffF6F8FA),
+              borderRadius: BorderRadius.all(Radius.circular(5.0))),
+        ),
+      );
+    }
+    return body;
+  }
+}