RGB.NET/RGB.NET.WPF/Styles/LedVisualizer.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:controls="clr-namespace:RGB.NET.WPF.Controls"
                    xmlns:converter="clr-namespace:RGB.NET.WPF.Converter">

    <converter:ColorToSolidColorBrushConverter x:Key="ConverterColorToSolidColorBrush" />

    <ControlTemplate x:Key="ControlTemplateLedRectangle"
                     TargetType="{x:Type controls:LedVisualizer}">
        <Rectangle VerticalAlignment="Stretch"
                   HorizontalAlignment="Stretch"
                   Stroke="{TemplateBinding BorderBrush}"
                   StrokeThickness="{TemplateBinding BorderThickness}"
                   Fill="{TemplateBinding Background}" />
    </ControlTemplate>

    <ControlTemplate x:Key="ControlTemplateLedCircle"
                     TargetType="{x:Type controls:LedVisualizer}">
        <Ellipse VerticalAlignment="Stretch"
                 HorizontalAlignment="Stretch"
                 Stroke="{TemplateBinding BorderBrush}"
                 StrokeThickness="{TemplateBinding BorderThickness}"
                 Fill="{TemplateBinding Background}" />
    </ControlTemplate>

    <Style x:Key="StyleLedVisualizer"
           TargetType="{x:Type controls:LedVisualizer}">
        <Setter Property="Width" Value="{Binding Led.LedRectangle.Size.Width, RelativeSource={RelativeSource Self}}" />
        <Setter Property="Height" Value="{Binding Led.LedRectangle.Size.Height, RelativeSource={RelativeSource Self}}" />
        <Setter Property="Canvas.Left" Value="{Binding Led.LedRectangle.Location.X, RelativeSource={RelativeSource Self}}" />
        <Setter Property="Canvas.Top" Value="{Binding Led.LedRectangle.Location.Y, RelativeSource={RelativeSource Self}}" />

        <Setter Property="BorderThickness" Value="1" />
        <Setter Property="BorderBrush" Value="#202020" />
        <Setter Property="Background" Value="{Binding Led.Color, RelativeSource={RelativeSource Self}, 
                                                      Converter={StaticResource ConverterColorToSolidColorBrush}}" />
        <Setter Property="Opacity" Value="0.66" />

        <Setter Property="Template" Value="{StaticResource ControlTemplateLedRectangle}" />

        <Style.Triggers>
            <Trigger Property="IsMouseOver" Value="True">
                <Setter Property="BorderBrush" Value="#FFFFFF" />
            </Trigger>

            <DataTrigger Binding="{Binding Led.Shape, RelativeSource={RelativeSource Self}}" Value="Circle">
                <Setter Property="Template" Value="{StaticResource ControlTemplateLedCircle}" />
            </DataTrigger>
        </Style.Triggers>
    </Style>
    <Style TargetType="{x:Type controls:LedVisualizer}" BasedOn="{StaticResource StyleLedVisualizer}" />

</ResourceDictionary>