PDFOffice_Windows_exe/PDF Office/CustomControl/ColorDropBox.xaml

<UserControl x:Class="PDF_Office.CustomControl.ColorDropBox"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:PDF_Office.CustomControl"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800" MinWidth="52" Background="#01000000">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"></ColumnDefinition>
            <ColumnDefinition Width="auto"  MinWidth="{DynamicResource {x:Static SystemParameters.VerticalScrollBarWidthKey}}" ></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <!--正常颜色显示模块-->
        <Border Width="16" Height="16" HorizontalAlignment="Left" BorderThickness="1" BorderBrush="#33000000" Margin="12,0,0,0"
                Visibility="{Binding ElementName=NormalColorRectControl,Path=Visibility}">
            <Rectangle  Name="NormalColorRectControl" Visibility="Collapsed"/>
        </Border>
        <!--透明颜色显示模块-->
        <Border  Width="16" Height="16" HorizontalAlignment="Left" BorderThickness="1" Margin="12,0,0,0"
                BorderBrush="#33000000" Visibility="{Binding ElementName=TransparentRectControl,Path=Visibility}">
            <Rectangle  Name="TransparentRectControl" Visibility="Collapsed">
                <Rectangle.Fill>
                    <DrawingBrush>
                        <DrawingBrush.Drawing>
                            <DrawingGroup>
                                <GeometryDrawing Brush="White">
                                    <GeometryDrawing.Pen>
                                        <Pen Thickness="1" Brush="#E2E3E6"></Pen>
                                    </GeometryDrawing.Pen>
                                    <GeometryDrawing.Geometry>
                                        <RectangleGeometry Rect="0,0,16,16"></RectangleGeometry>
                                    </GeometryDrawing.Geometry>
                                </GeometryDrawing>
                                <GeometryDrawing>
                                    <GeometryDrawing.Pen>
                                        <Pen Thickness="2" Brush="#FF3B30"></Pen>
                                    </GeometryDrawing.Pen>
                                    <GeometryDrawing.Geometry>
                                        <LineGeometry StartPoint="16,0" EndPoint="0,16"></LineGeometry>
                                    </GeometryDrawing.Geometry>
                                </GeometryDrawing>
                            </DrawingGroup>
                        </DrawingBrush.Drawing>
                    </DrawingBrush>
                </Rectangle.Fill>
            </Rectangle>
        </Border>

        <!--下拉模块-->
        <Border Grid.Column="1" BorderThickness="0" Background="Transparent" HorizontalAlignment="Right" Padding="4,0,4,0">
            <Polygon Points="13.8535156 5.85546875 13.1445312 5.14648438 8 10.2910156 2.85546875 5.14648438 2.14648438 5.85546875 8 11.7089844"
                     Fill="#000000" Width="16" Height="16"/>
        </Border>
    </Grid>
</UserControl>