add RelativePanel, Rate, RunningBlock and ScrollViewer docs

doc/source/handycontrol/extend_controls/rate/index.md

@@ -1,5 +1,55 @@
 ---
-title: 建设中
+title: Rate 评分
 ---
 
-建设中
+当对评价进行展示或对事物进行快速的评级操作时，可使用评分控件.
+
+```cs
+[DefaultProperty("Items")]
+[ContentProperty("Items")]
+[TemplatePart(Name = ElementPanel, Type = typeof(Panel))]
+public class SimpleItemsControl : Control
+```
+
+```cs
+public class RegularItemsControl : SimpleItemsControl
+```
+
+```cs
+public class Rate : RegularItemsControl
+```
+
+# 属性
+
+|属性|描述|默认值|备注|
+|-|-|-|-|
+|AllowHalf|是否允许半选|false||
+|AllowClear|是否允许再次点击后清除|true||
+|Icon|图标|||
+|Count|star 总数|5||
+|DefaultValue|默认值|0||
+|Value|当前评分|0||
+|Text|评分文字|||
+|ShowText|是否显示评分文字|false||
+|IsReadOnly|是否只读|false||
+|Value|当前评分|0|||
+
+# 事件
+
+|名称|说明|
+|-|-|
+| ValueChanged | 评分改变时触发 |
+
+# 案例
+
+```xml
+<StackPanel Width="170">
+    <hc:Rate Value="2"/>
+    <hc:Rate Value="5" Count="6" Margin="0,16,0,0" Foreground="{DynamicResource SuccessBrush}"/>
+    <hc:Rate DefaultValue="3" IsReadOnly="True" AllowHalf="True" Margin="0,16,0,0" Foreground="{DynamicResource WarningBrush}"/>
+    <hc:Rate DefaultValue="1" AllowClear="False" AllowHalf="True" Margin="0,16,0,0" Foreground="{DynamicResource DangerBrush}" Icon="{StaticResource LoveGeometry}"/>
+    <hc:Rate Value="4.5" AllowHalf="True" ShowText="True" Margin="0,16,0,0" Foreground="{DynamicResource DangerBrush}" Icon="{StaticResource LoveGeometry}"/>
+</StackPanel>
+```
+
+![Rate](https://raw.githubusercontent.com/HandyOrg/HandyOrgResource/master/HandyControl/Resources/Rate.png)