feat(style): add TreeView small style

src/Shared/HandyControl_Shared/Themes/Styles/Base/TreeViewBaseStyle.xaml

@@ -36,13 +36,14 @@
         <Setter Property="Background" Value="Transparent"/>
         <Setter Property="Padding" Value="10,0"/>
         <Setter Property="BorderThickness" Value="0"/>
+        <Setter Property="MinHeight" Value="{StaticResource DefaultControlHeight}"/>
         <Setter Property="Template">
             <Setter.Value>
                 <ControlTemplate TargetType="TreeViewItem">
                     <Grid>
                         <Grid.RowDefinitions>
-                            <RowDefinition MinHeight="{StaticResource DefaultControlHeight}"/>
-                            <RowDefinition/>
+                            <RowDefinition MinHeight="{TemplateBinding MinHeight}"/>
+                            <RowDefinition Height="Auto"/>
                         </Grid.RowDefinitions>
                         <Border x:Name="Bd" CornerRadius="{Binding Path=(hc:BorderElement.CornerRadius),RelativeSource={RelativeSource TemplatedParent}}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}" SnapsToDevicePixels="true">
                             <DockPanel LastChildFill="True" Margin="{Binding Converter={StaticResource TreeViewItemMarginConverter}, RelativeSource={RelativeSource TemplatedParent}}">

src/Shared/HandyControl_Shared/Themes/Styles/TreeView.xaml

@@ -1,7 +1,17 @@
-<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
+<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
 
     <Style BasedOn="{StaticResource TreeViewItemBaseStyle}" TargetType="TreeViewItem"/>
 
     <Style BasedOn="{StaticResource TreeViewBaseStyle}" TargetType="TreeView"/>
 
+    <Style x:Key="TreeViewItemBaseStyle.Small" BasedOn="{StaticResource TreeViewItemBaseStyle}" TargetType="TreeViewItem">
+        <Setter Property="Padding" Value="6,0"/>
+        <Setter Property="MinHeight" Value="24"/>
+    </Style>
+
+    <Style x:Key="TreeView.Small" BasedOn="{StaticResource TreeViewBaseStyle}" TargetType="TreeView">
+        <Setter Property="ItemContainerStyle" Value="{StaticResource TreeViewItemBaseStyle.Small}"/>
+    </Style>
+
 </ResourceDictionary>