Merge branch 'ysz' into test

Author: wanwusangzhi

assets/imgs/avatar.png

@@ -1 +1,50 @@
-## **文档完善中**
+## **Drawer**
+> 抽屉式组件，从Scaffold边缘水平滑出左侧菜单，也可通过Scaffold.of(context).openDrawer()显示左侧菜单。关闭页面通过Navigator.pop(context)。
+
+### 构造函数
+```
+Drawer({
+  Key key,
+  double elevation: 16.0,
+  Widget child,
+  String semanticLabel
+})
+```
+
+### 属性介绍
+- child: 菜单内容
+- elevation：导航栏底部阴影
+
+### 高级用法
+- 关闭菜单
+> Navigator.pop(context)
+- 打开菜单
+> 方法一： Scaffold.of(context).openDrawer()
+```
+使用context变量时，需要注意在scaffold中增加Builder来获取到context，该context才是scaffold中的上下文对象，而Build build(BuildContext context)是外层类的上下文，没法操作菜单
+Builder(
+  builder: (context) {
+    return RaisedButton(
+      onPressed: () {
+        Scaffold.of(context).openDrawer();
+      },
+      child: Text("点击滑出左侧菜单"),
+    );
+  },
+),
+```
+
+> 方法二： static GlobalKey<ScaffoldState> _globalKey= new GlobalKey();
+```
+定义globalKey
+
+static GlobalKey<ScaffoldState> _globalKey= new GlobalKey();
+...
+Scaffold(
+    key: _globalKey , //设置key
+    ...  
+)
+
+通过globalkey操作菜单状态
+_globalKey.currentState.openDrawer()
+```

assets/nothing.png

@@ -12,12 +12,12 @@ class Index extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     Size size = MediaQuery.of(context).size;
-    double _dp = 1.4;
+    double _dp = 1.5;
     return Store.connect(
       builder: (context, child, MainStateModel model) {
         return Center(
           child: Container(
-            width: size.width / _dp,
+            width: size.width,
             height: size.height / _dp,
             margin: EdgeInsets.all(30 / _dp),
             decoration: BoxDecoration(

docs/widget/navigator/drawer/index.md

@@ -18,7 +18,70 @@ class _IndexState extends State<Index> {
         title: Text('Drawer'),
       ),
       body: Center(
-        child: Text('更新中'),
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            Builder(
+              builder: (context) {
+                return RaisedButton(
+                  onPressed: () {
+                    Scaffold.of(context).openDrawer();
+                  },
+                  child: Text("点击滑出左侧菜单"),
+                );
+              },
+            ),
+            Text('从左侧中滑出菜单组件'),
+          ],
+        ),
+      ),
+      drawer: Drawer(
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: <Widget>[
+            Padding(
+              padding: const EdgeInsets.only(top: 38.0),
+              child: Row(
+                children: <Widget>[
+                  Padding(
+                    padding: const EdgeInsets.symmetric(horizontal: 16.0),
+                    child: ClipOval(
+                      child: Image.asset(
+                        "assets/imgs/avatar.png",
+                        width: 80,
+                      ),
+                    ),
+                  ),
+                  Text(
+                    "Guest",
+                    style: TextStyle(fontWeight: FontWeight.bold),
+                  )
+                ],
+              ),
+            ),
+            Expanded(
+              child: ListView(
+                children: <Widget>[
+                  ListTile(
+                    leading: Icon(Icons.account_circle),
+                    title: Text('Change Account'),
+                  ),
+                  ListTile(
+                    leading: Icon(Icons.settings),
+                    title: Text('Setting'),
+                  ),
+                  ListTile(
+                    leading: Icon(Icons.close),
+                    title: Text('点击关闭菜单'),
+                    onTap: () {
+                      Navigator.pop(context);
+                    },
+                  ),
+                ],
+              ),
+            ),
+          ],
+        ),
       ),
     );
   }

lib/components/exampleComp.dart

@@ -58,6 +58,7 @@ flutter:
   assets:
       - locale/
       - assets/
+      - assets/imgs/
       - docs/widget/scrollview/customscrollview/
       - docs/widget/scrollview/gridview/
       - docs/widget/scrollview/listview/