初步优化项目结构

lib/widget_system/widgets/MultiChildRenderObjectWidget/Wrap/node4_textDirection.dart

@@ -0,0 +1,77 @@
+import 'package:flutter/material.dart';
+
+/// create by 张风捷特烈 on 2020/4/30
+/// contact me by email 1981462002@qq.com
+/// 说明: 
+
+//    {
+//      "widgetId": 98,
+//      "name": 'Wrap的textDirection属性',
+//      "priority": 4,
+//      "subtitle":
+//          "【textDirection】 : 文字方向   【TextDirection】",
+//    }
+class TextDirectionWrap extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return Wrap(
+        children: TextDirection.values
+            .map((mode) => Column(children: <Widget>[
+          Container(
+              margin: EdgeInsets.all(5),
+              width: 160,
+              height: 100,
+              color: Colors.grey.withAlpha(88),
+              child: _buildItem(mode)),
+          Text(mode.toString().split('.')[1])
+        ]))
+            .toList());
+  }
+
+  final yellowBox = Container(
+    color: Colors.yellow,
+    height: 30,
+    width: 50,
+  );
+
+  final redBox = Container(
+    color: Colors.red,
+    height: 40,
+    width: 40,
+  );
+  final greenBox = Container(
+    color: Colors.green,
+    height: 40,
+    width: 20,
+  );
+  final blackBox = Container(
+    color: Colors.black,
+    height: 10,
+    width: 10,
+  );
+  final purpleBox = Container(
+    color: Colors.purple,
+    height: 20,
+    width: 20,
+  );
+  final orangeBox = Container(
+    color: Colors.orange,
+    height: 80,
+    width: 20,
+  );
+  final cyanBox = Container(
+    color: Colors.cyanAccent,
+    height: 10,
+    width: 20,
+  );
+
+  _buildItem(mode) => Wrap(
+    textDirection: mode,
+    runSpacing: 10,
+    spacing: 10,
+    children: <Widget>[
+      yellowBox, redBox, greenBox, cyanBox,
+      blackBox, purpleBox, orangeBox,
+    ],
+  );
+}