Shrlalgo.RvKits/WPFluent/Controls/CheckBox/CheckBox.xaml

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:controls="clr-namespace:WPFluent.Controls"
    xmlns:system="clr-namespace:System;assembly=mscorlib"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <Thickness x:Key="CheckBoxPadding">11,5,11,6</Thickness>
    <Thickness x:Key="CheckBoxBorderThemeThickness">1</Thickness>
    <Thickness x:Key="CheckBoxContentMargin">8,0,0,0</Thickness>
    <system:Double x:Key="CheckBoxIconSize">14</system:Double>
    <system:Double x:Key="CheckBoxHeight">22</system:Double>
    <system:Double x:Key="CheckBoxWidth">22</system:Double>

    <Style TargetType="{x:Type CheckBox}" x:Key="DefaultCheckBoxStyle">
        <!--  Universal WPF UI focus  -->
        <Setter Property="FocusVisualStyle" Value="{DynamicResource DefaultControlFocusVisualStyle}" />
        <!--  Universal WPF UI focus  -->
        <Setter Property="Background" Value="{DynamicResource ControlAltFillColorSecondaryBrush}" />
        <Setter Property="Foreground" Value="{DynamicResource TextFillColorPrimaryBrush}" />
        <Setter Property="BorderBrush" Value="{DynamicResource ControlStrongStrokeColorDefaultBrush}" />
        <Setter Property="BorderThickness" Value="{StaticResource CheckBoxBorderThemeThickness}" />
        <Setter Property="Padding" Value="{StaticResource CheckBoxPadding}" />
        <Setter Property="Border.CornerRadius" Value="{DynamicResource ControlCornerRadius}" />
        <Setter Property="HorizontalAlignment" Value="Left" />
        <Setter Property="VerticalAlignment" Value="Center" />
        <Setter Property="HorizontalContentAlignment" Value="Left" />
        <Setter Property="VerticalContentAlignment" Value="Center" />
        <Setter Property="Cursor" Value="Hand" />
        <Setter Property="FontSize" Value="{DynamicResource ControlContentThemeFontSize}" />
        <Setter Property="FontWeight" Value="Normal" />
        <Setter Property="KeyboardNavigation.IsTabStop" Value="True" />
        <Setter Property="Focusable" Value="True" />
        <Setter Property="MinWidth" Value="120" />
        <Setter Property="MinHeight" Value="32" />
        <Setter Property="SnapsToDevicePixels" Value="True" />
        <Setter Property="OverridesDefaultStyle" Value="True" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type CheckBox}">
                    <BulletDecorator
                        Background="Transparent"
                        HorizontalAlignment="{TemplateBinding HorizontalAlignment}"
                        VerticalAlignment="{TemplateBinding VerticalAlignment}">
                        <BulletDecorator.Bullet>
                            <Border
                                Background="{TemplateBinding Background}"
                                CornerRadius="{TemplateBinding Border.CornerRadius}"
                                Height="{StaticResource CheckBoxWidth}"
                                HorizontalAlignment="Left"
                                VerticalAlignment="Center"
                                Width="{StaticResource CheckBoxHeight}"
                                x:Name="ControlBorderIconPresenter">
                                <Border
                                    BorderBrush="{TemplateBinding BorderBrush}"
                                    BorderThickness="{TemplateBinding BorderThickness}"
                                    CornerRadius="{TemplateBinding Border.CornerRadius}"
                                    x:Name="StrokeBorder">
                                    <Grid>
                                        <controls:SymbolIcon
                                            FontSize="{StaticResource CheckBoxIconSize}"
                                            FontWeight="Bold"
                                            Foreground="{DynamicResource TextOnAccentFillColorPrimaryBrush}"
                                            HorizontalAlignment="Center"
                                            Margin="0"
                                            Symbol="Checkmark48"
                                            VerticalAlignment="Center"
                                            Visibility="Collapsed"
                                            x:Name="ControlIcon" />
                                    </Grid>
                                </Border>
                            </Border>
                        </BulletDecorator.Bullet>
                        <ContentPresenter
                            HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                            Margin="{StaticResource CheckBoxContentMargin}"
                            RecognizesAccessKey="True"
                            VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                            x:Name="ContentPresenter" />
                    </BulletDecorator>
                    <ControlTemplate.Triggers>
                        <Trigger Property="Content" Value="{x:Null}">
                            <Setter Property="Margin" TargetName="ContentPresenter" Value="0" />
                            <Setter Property="MinWidth" Value="30" />
                        </Trigger>
                        <Trigger Property="Content" Value="">
                            <Setter Property="Margin" TargetName="ContentPresenter" Value="0" />
                            <Setter Property="MinWidth" Value="30" />
                        </Trigger>
                        <Trigger Property="IsChecked" Value="{x:Null}">
                            <Setter Property="Symbol" TargetName="ControlIcon" Value="Subtract16" />
                            <Setter Property="Visibility" TargetName="ControlIcon" Value="Visible" />
                            <Setter Property="Background" TargetName="ControlBorderIconPresenter" Value="{DynamicResource SystemFillColorAttentionBrush}" />
                            <Setter Property="BorderBrush" TargetName="StrokeBorder" Value="{DynamicResource SubtleFillColorTransparentBrush}" />
                        </Trigger>
                        <Trigger Property="IsChecked" Value="True">
                            <Setter Property="Visibility" TargetName="ControlIcon" Value="Visible" />
                            <Setter Property="Background" TargetName="ControlBorderIconPresenter" Value="{DynamicResource SystemFillColorAttentionBrush}" />
                            <Setter Property="BorderBrush" TargetName="StrokeBorder" Value="{DynamicResource SubtleFillColorTransparentBrush}" />
                        </Trigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsMouseOver" Value="True" />
                                <Condition Property="IsChecked" Value="False" />
                            </MultiTrigger.Conditions>
                            <Setter Property="Background" TargetName="StrokeBorder" Value="{DynamicResource ControlAltFillColorTertiaryBrush}" />
                        </MultiTrigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsMouseOver" Value="True" />
                                <Condition Property="IsChecked" Value="{x:Null}" />
                            </MultiTrigger.Conditions>
                            <Setter Property="Background" TargetName="ControlBorderIconPresenter" Value="{DynamicResource SystemFillColorAttentionBrush}" />
                            <Setter Property="BorderBrush" TargetName="StrokeBorder" Value="{DynamicResource SubtleFillColorTransparentBrush}" />
                        </MultiTrigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsMouseOver" Value="True" />
                                <Condition Property="IsChecked" Value="True" />
                            </MultiTrigger.Conditions>
                            <Setter Property="Background" TargetName="ControlBorderIconPresenter" Value="{DynamicResource SystemFillColorAttentionBrush}" />
                            <Setter Property="BorderBrush" TargetName="StrokeBorder" Value="{DynamicResource SubtleFillColorTransparentBrush}" />
                        </MultiTrigger>
                        <Trigger Property="IsEnabled" Value="False">
                            <Setter Property="Background" TargetName="ControlBorderIconPresenter" Value="{DynamicResource ControlAltFillColorDisabledBrush}" />
                            <Setter Property="BorderBrush" TargetName="StrokeBorder" Value="{DynamicResource ControlStrongStrokeColorDisabledBrush}" />
                            <Setter Property="Foreground" TargetName="ControlIcon" Value="{DynamicResource TextFillColorDisabledBrush}" />
                            <Setter Property="Foreground" Value="{DynamicResource TextFillColorDisabledBrush}" />
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <Style BasedOn="{StaticResource DefaultCheckBoxStyle}" TargetType="{x:Type CheckBox}" />

</ResourceDictionary>