GeekDesk/Control/Windows/PixelColorPickerWindow.xaml

<Window 
    x:Class="GeekDesk.Control.Windows.PixelColorPickerWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xml:lang="zh-CN"
    WindowStyle="None" 
    AllowsTransparency="True"
    Background="Black"
    ResizeMode="NoResize"
    PreviewMouseMove="Window_PreviewMouseMove"
    MouseLeftButtonDown="Window_MouseLeftButtonDown"
    MouseRightButtonDown="Window_MouseRightButtonDown"
    MouseWheel="Window_MouseWheel"
    Loaded="Window_Loaded"
    >
    <Window.Resources>
        <Style x:Key="TextKey" TargetType="TextBlock">
            <Setter Property="FontSize" Value="12"/>
        </Style>
        <Style x:Key="TextValue" TargetType="TextBlock">
            <Setter Property="FontSize" Value="12"/>
            <Setter Property="Margin" Value="10,0,0,0"/>
        </Style>
    </Window.Resources>
    <Grid>
        <Image x:Name="DesktopBG" RenderOptions.BitmapScalingMode="HighQuality"/>

        <Canvas HorizontalAlignment="Left" VerticalAlignment="Top" Background="Transparent">
            <Canvas x:Name="ColorCanvas" 
                        Width="185"
                        Height="160">
                <Border Background="White" 
                        CornerRadius="5"
                        >
                    <Grid>
                        <WrapPanel HorizontalAlignment="Center" Height="70" Margin="0,5,0,80">
                            <Border Width="70" Height="70" 
                                    BorderBrush="Black"
                                    BorderThickness="1">
                                <Rectangle x:Name="PixelColor" StrokeThickness="0">
                                    <Rectangle.Fill>
                                        <SolidColorBrush />
                                    </Rectangle.Fill>
                                </Rectangle>
                            </Border>
                            <Border x:Name="Pixel" 
                                    HorizontalAlignment="Center" 
                                    VerticalAlignment="Center"
                                    Width="70" 
                                    Height="70" 
                                    Background="Black"
                                    BorderBrush="Black"
                                    BorderThickness="1" 
                                    Margin="20,0,0,0"
                                    >
                                <Grid>
                                    <Rectangle x:Name="PixelBG" StrokeThickness="0">
                                        <Rectangle.Fill>
                                            <VisualBrush ViewboxUnits="Absolute" Viewbox="0,0,20,20"
                                            ViewportUnits="RelativeToBoundingBox" Viewport="0,0,1,1">
                                            </VisualBrush>
                                        </Rectangle.Fill>
                                    </Rectangle>
                                    <Border HorizontalAlignment="Center" 
                                            VerticalAlignment="Center" 
                                            Width="6" Height="6" 
                                            BorderBrush="White" BorderThickness="0.6">

                                        <Border Width="4.5" Height="4.5" BorderBrush="Black" BorderThickness="0.6"/>
                                    </Border>
                                </Grid>
                            </Border>
                        </WrapPanel>
                        <WrapPanel HorizontalAlignment="Center" Height="80" Margin="0,85,0,5">
                            <StackPanel Width="100" Height="80">
                                <TextBlock Text="RGB:" Style="{StaticResource TextKey}"/>
                                <TextBlock x:Name="PixelColor_RGB"  Style="{StaticResource TextValue}"/>

                                <TextBlock Text="HTML:" Margin="0,5,0,0" Style="{StaticResource TextKey}"/>
                                <TextBlock x:Name="PixelColor_HTML" Style="{StaticResource TextValue}"/>
                            </StackPanel>
                            <StackPanel Width="65" Height="80" Margin="10,0,0,0">
                                <TextBlock x:Name="Pixel_XY" TextAlignment="Right"/>
                            </StackPanel>
                        </WrapPanel>
                    </Grid>
                </Border>
            </Canvas>
        </Canvas>

    </Grid>
</Window>