BrightSharp.Toolkit/BrightSharp.NET/Themes/Diagrams/DesignerItem.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:s="clr-namespace:BrightSharp.Diagrams">

    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="SizeChrome.xaml"/>
        <ResourceDictionary Source="ResizeRotateChrome.xaml"/>
    </ResourceDictionary.MergedDictionaries>

    <ControlTemplate x:Key="MoveThumbTemplate"  TargetType="{x:Type s:MoveThumb}">
        <Rectangle Fill="Transparent"/>
    </ControlTemplate>

    <Style x:Key="DesignerItemStyle" TargetType="ContentControl">
        <Setter Property="MinHeight" Value="26"/>
        <Setter Property="MinWidth" Value="30"/>
        <Setter Property="RenderTransformOrigin" Value="0.5,0.5"/>
        <Setter Property="SnapsToDevicePixels" Value="true"/>
        <Setter Property="Focusable" Value="False" />
        <Setter Property="MaxHeight" Value="900" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="ContentControl">
                    <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
                        <Grid DataContext="{Binding RelativeSource={RelativeSource TemplatedParent}}">
                            <s:MoveThumb Focusable="False" Cursor="SizeAll" Template="{StaticResource MoveThumbTemplate}" />
                            <ContentPresenter Content="{TemplateBinding ContentControl.Content}"
                              Margin="{TemplateBinding Padding}"/>
                            <s:DesignerItemDecorator x:Name="ItemDecorator" Focusable="False"/>
                        </Grid>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="Selector.IsSelected" Value="True">
                            <Setter TargetName="ItemDecorator" Property="ShowDecorator" Value="True" />
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>


</ResourceDictionary>