StabilityMatrix/StabilityMatrix.Avalonia/Styles/ControlThemes/HyperlinkIconButtonStyles.axaml

<ResourceDictionary
    xmlns="https://github.com/avaloniaui"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:controls="clr-namespace:StabilityMatrix.Avalonia.Controls"
    xmlns:fluentIcons="clr-namespace:FluentIcons.FluentAvalonia;assembly=FluentIcons.FluentAvalonia"
    xmlns:ui="using:FluentAvalonia.UI.Controls">

    <Design.PreviewWith>
        <StackPanel Margin="8" Spacing="6">
            <controls:HyperlinkIconButton Content="Link"/>
            <controls:HyperlinkIconButton Content="Disabled" IsEnabled="False"/>
            <controls:HyperlinkIconButton Content="File" Icon="Open"/>
        </StackPanel>
    </Design.PreviewWith>
    
    <!-- ReSharper disable once Xaml.StaticResourceNotResolved -->
    <ControlTheme
        x:Key="{x:Type controls:HyperlinkIconButton}"
        TargetType="controls:HyperlinkIconButton">
        
        <Setter Property="Background" Value="{DynamicResource HyperlinkButtonBackground}" />
        <Setter Property="Foreground" Value="{DynamicResource HyperlinkButtonForeground}" />
        <Setter Property="BorderBrush" Value="{DynamicResource HyperlinkButtonBorderBrush}" />
        <Setter Property="BorderThickness" Value="{DynamicResource HyperlinkButtonBorderThemeThickness}" />
        <Setter Property="Padding" Value="{DynamicResource ButtonPadding}" />
        <Setter Property="HorizontalAlignment" Value="Left" />
        <Setter Property="VerticalAlignment" Value="Center" />
        <Setter Property="FontFamily" Value="{DynamicResource ContentControlThemeFontFamily}" />
        <Setter Property="FontSize" Value="{DynamicResource ControlContentThemeFontSize}" />
        <Setter Property="Cursor" Value="Hand" />
        <Setter Property="CornerRadius" Value="{DynamicResource ControlCornerRadius}" />
        
        <Setter Property="Icon" Value="Link"/>
        
        <Setter Property="ContentTemplate">
            <DataTemplate DataType="x:String">
                <StackPanel Orientation="Horizontal">
                    <fluentIcons:SymbolIcon
                        VerticalAlignment="Center"
                        Margin="0,1,4,0"
                        FontSize="15"
                        Foreground="{DynamicResource HyperlinkButtonForeground}"
                        Symbol="{Binding $parent[controls:HyperlinkIconButton].Icon}" />
                    <TextBlock 
                        Foreground="{DynamicResource HyperlinkButtonForeground}" Text="{Binding}" />
                </StackPanel>                
            </DataTemplate>
        </Setter>
        
        <!-- Override template to not set Underline TextDecoration -->
        <Setter Property="Template">
            <ControlTemplate>
                <ContentPresenter Name="ContentPresenter"
                                  Background="{TemplateBinding Background}"
                                  BorderBrush="{TemplateBinding BorderBrush}"
                                  BorderThickness="{TemplateBinding BorderThickness}"
                                  Content="{TemplateBinding Content}"
                                  ContentTemplate="{TemplateBinding ContentTemplate}"
                                  Padding="{TemplateBinding Padding}"
                                  CornerRadius="{TemplateBinding CornerRadius}"
                                  HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
                                  VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
                                  Foreground="{TemplateBinding Foreground}">
                </ContentPresenter>
            </ControlTemplate>
        </Setter>
        
        <Style Selector="^:pointerover /template/ ContentPresenter#ContentPresenter">
            <Setter Property="Foreground" Value="{DynamicResource HyperlinkButtonForegroundPointerOver}" />
            <Setter Property="Background" Value="{DynamicResource HyperlinkButtonBackgroundPointerOver}" />
            <Setter Property="BorderBrush" Value="{DynamicResource HyperlinkButtonBorderBrushPointerOver}" />
        </Style>
        <Style Selector="^:pressed /template/ ContentPresenter#ContentPresenter">
            <Setter Property="Foreground" Value="{DynamicResource HyperlinkButtonForegroundPressed}" />
            <Setter Property="Background" Value="{DynamicResource HyperlinkButtonBackgroundPressed}" />
            <Setter Property="BorderBrush" Value="{DynamicResource HyperlinkButtonBorderBrushPressed}" />
        </Style>
        <Style Selector="^:disabled /template/ ContentPresenter#ContentPresenter">
            <Setter Property="Foreground" Value="{DynamicResource HyperlinkButtonForegroundDisabled}" />
            <Setter Property="Background" Value="{DynamicResource HyperlinkButtonBackgroundDisabled}" />
            <Setter Property="BorderBrush" Value="{DynamicResource HyperlinkButtonBorderBrushDisabled}" />
        </Style>
        
    </ControlTheme>

</ResourceDictionary>