HandyControl/src/Avalonia/HandyControl_Avalonia/Themes/Styles/Button.axaml

<ResourceDictionary xmlns="https://github.com/avaloniaui"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    x:ClassModifier="internal"
                    xmlns:hc="clr-namespace:HandyControl.Controls">
    <ControlTheme x:Key="ButtonBaseStyle"
                  TargetType="Button">
        <Setter Property="Height"
                Value="{StaticResource DefaultControlHeight}" />
        <Setter Property="Padding"
                Value="{StaticResource DefaultControlPadding}" />
        <Setter Property="HorizontalAlignment"
                Value="Center" />
        <Setter Property="VerticalAlignment"
                Value="Center" />
        <Setter Property="HorizontalContentAlignment"
                Value="Center" />
        <Setter Property="VerticalContentAlignment"
                Value="Center" />
        <Setter Property="Background"
                Value="{DynamicResource RegionBrush}" />
        <Setter Property="Foreground"
                Value="{DynamicResource TextIconBrush}" />
        <Setter Property="BorderBrush"
                Value="{DynamicResource BorderBrush}" />
        <Setter Property="BorderThickness"
                Value="1" />
        <Setter Property="hc:BorderElement.CornerRadius"
                Value="{StaticResource DefaultCornerRadius}" />
        <Setter Property="CornerRadius"
                Value="{Binding $self.(hc:BorderElement.CornerRadius)}" />
        <Setter Property="Template">
            <ControlTemplate>
                <Panel>
                    <Border Background="{TemplateBinding Background}"
                            CornerRadius="{TemplateBinding CornerRadius}" />
                    <Border BorderThickness="{TemplateBinding BorderThickness}"
                            BorderBrush="{TemplateBinding BorderBrush}"
                            CornerRadius="{TemplateBinding CornerRadius}">
                        <StackPanel Orientation="Horizontal"
                                    HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                    VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                                    Margin="{TemplateBinding Padding}">
                            <Path Width="{TemplateBinding hc:IconElement.Width}"
                                  Height="{TemplateBinding hc:IconElement.Height}"
                                  Fill="{TemplateBinding Foreground}"
                                  IsVisible="{Binding Path=(hc:IconElement.Geometry), RelativeSource={RelativeSource TemplatedParent}, Converter={x:Static ObjectConverters.IsNotNull}}"
                                  Stretch="Uniform"
                                  Data="{TemplateBinding hc:IconElement.Geometry}" />
                            <ContentPresenter RecognizesAccessKey="True"
                                              VerticalAlignment="Center"
                                              Content="{TemplateBinding Content}"
                                              ContentTemplate="{TemplateBinding ContentTemplate}"
                                              IsVisible="{Binding $self.Content, Converter={x:Static ObjectConverters.IsNotNull}}"
                                              Margin="{Binding Path=(hc:IconElement.Geometry), RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource GeometrySpacingConverter}, ConverterParameter='6,0,0,0'}" />
                        </StackPanel>
                    </Border>
                </Panel>
            </ControlTemplate>
        </Setter>

        <Style Selector="^:pointerover">
            <Setter Property="Opacity"
                    Value="0.9" />
        </Style>

        <Style Selector="^:pressed">
            <Setter Property="Opacity"
                    Value="0.6" />
        </Style>

        <Style Selector="^:disabled">
            <Setter Property="Opacity"
                    Value="0.4" />
        </Style>
    </ControlTheme>

    <ControlTheme x:Key="ButtonDefault"
                  BasedOn="{StaticResource ButtonBaseStyle}"
                  TargetType="Button">
        <Setter Property="Foreground"
                Value="{DynamicResource PrimaryTextBrush}" />

        <Style Selector="^:pointerover">
            <Setter Property="Background"
                    Value="{DynamicResource SecondaryRegionBrush}" />
        </Style>

        <Style Selector="^:pressed">
            <Setter Property="Background"
                    Value="{DynamicResource BorderBrush}" />
        </Style>
    </ControlTheme>

    <ControlTheme x:Key="ButtonDefault.Small"
                  BasedOn="{StaticResource ButtonDefault}"
                  TargetType="Button">
        <Setter Property="Height"
                Value="20" />
        <Setter Property="Padding"
                Value="6,1" />
        <Setter Property="hc:IconElement.Height"
                Value="12" />
    </ControlTheme>

    <ControlTheme x:Key="{x:Type Button}"
                  BasedOn="{StaticResource ButtonDefault}"
                  TargetType="Button" />

    <ControlTheme x:Key="ButtonPrimary"
                  BasedOn="{StaticResource ButtonBaseStyle}"
                  TargetType="Button">
        <Setter Property="Background"
                Value="{DynamicResource PrimaryBrush}" />
        <Setter Property="BorderBrush"
                Value="{DynamicResource PrimaryBrush}" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonPrimary.Small"
                  BasedOn="{StaticResource ButtonPrimary}"
                  TargetType="Button">
        <Setter Property="Height"
                Value="20" />
        <Setter Property="Padding"
                Value="6,1" />
        <Setter Property="hc:IconElement.Height"
                Value="12" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonSuccess"
                  BasedOn="{StaticResource ButtonBaseStyle}"
                  TargetType="Button">
        <Setter Property="Background"
                Value="{DynamicResource SuccessBrush}" />
        <Setter Property="BorderBrush"
                Value="{DynamicResource SuccessBrush}" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonSuccess.Small"
                  BasedOn="{StaticResource ButtonSuccess}"
                  TargetType="Button">
        <Setter Property="Height"
                Value="20" />
        <Setter Property="Padding"
                Value="6,1" />
        <Setter Property="hc:IconElement.Height"
                Value="12" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonInfo"
                  BasedOn="{StaticResource ButtonBaseStyle}"
                  TargetType="Button">
        <Setter Property="Background"
                Value="{DynamicResource InfoBrush}" />
        <Setter Property="BorderBrush"
                Value="{DynamicResource InfoBrush}" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonInfo.Small"
                  BasedOn="{StaticResource ButtonInfo}"
                  TargetType="Button">
        <Setter Property="Height"
                Value="20" />
        <Setter Property="Padding"
                Value="6,1" />
        <Setter Property="hc:IconElement.Height"
                Value="12" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonWarning"
                  BasedOn="{StaticResource ButtonBaseStyle}"
                  TargetType="Button">
        <Setter Property="Background"
                Value="{DynamicResource WarningBrush}" />
        <Setter Property="BorderBrush"
                Value="{DynamicResource WarningBrush}" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonWarning.Small"
                  BasedOn="{StaticResource ButtonWarning}"
                  TargetType="Button">
        <Setter Property="Height"
                Value="20" />
        <Setter Property="Padding"
                Value="6,1" />
        <Setter Property="hc:IconElement.Height"
                Value="12" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonDanger"
                  BasedOn="{StaticResource ButtonBaseStyle}"
                  TargetType="Button">
        <Setter Property="Background"
                Value="{DynamicResource DangerBrush}" />
        <Setter Property="BorderBrush"
                Value="{DynamicResource DangerBrush}" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonDanger.Small"
                  BasedOn="{StaticResource ButtonDanger}"
                  TargetType="Button">
        <Setter Property="Height"
                Value="20" />
        <Setter Property="Padding"
                Value="6,1" />
        <Setter Property="hc:IconElement.Height"
                Value="12" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonDashedBaseStyle"
                  BasedOn="{StaticResource ButtonBaseStyle}"
                  TargetType="Button">
        <Setter Property="Background"
                Value="Transparent" />
        <Setter Property="Template">
            <ControlTemplate TargetType="Button">
                <hc:DashedBorder BorderDashArray="3,2"
                                 Background="Transparent"
                                 BorderThickness="{TemplateBinding BorderThickness}"
                                 BorderBrush="{TemplateBinding BorderBrush}"
                                 CornerRadius="{TemplateBinding CornerRadius}">
                    <StackPanel Orientation="Horizontal"
                                HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                                Margin="{TemplateBinding Padding}">
                        <Path Width="{TemplateBinding hc:IconElement.Width}"
                              Height="{TemplateBinding hc:IconElement.Height}"
                              Fill="{TemplateBinding Foreground}"
                              IsVisible="{Binding Path=(hc:IconElement.Geometry), RelativeSource={RelativeSource TemplatedParent}, Converter={x:Static ObjectConverters.IsNotNull}}"
                              Stretch="Uniform"
                              Data="{TemplateBinding hc:IconElement.Geometry}" />
                        <ContentPresenter RecognizesAccessKey="True"
                                          VerticalAlignment="Center"
                                          Content="{TemplateBinding Content}"
                                          ContentTemplate="{TemplateBinding ContentTemplate}"
                                          IsVisible="{Binding $self.Content, Converter={x:Static ObjectConverters.IsNotNull}}"
                                          Margin="{Binding Path=(hc:IconElement.Geometry), RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource GeometrySpacingConverter}, ConverterParameter='6,0,0,0'}" />
                    </StackPanel>
                </hc:DashedBorder>
            </ControlTemplate>
        </Setter>
    </ControlTheme>

    <ControlTheme x:Key="ButtonDashed"
                  BasedOn="{StaticResource ButtonDashedBaseStyle}"
                  TargetType="Button">
        <Setter Property="Foreground"
                Value="{DynamicResource PrimaryTextBrush}" />

        <Style Selector="^:pointerover">
            <Setter Property="Foreground"
                    Value="{DynamicResource PrimaryBrush}" />
            <Setter Property="BorderBrush"
                    Value="{DynamicResource PrimaryBrush}" />
        </Style>
    </ControlTheme>

    <ControlTheme x:Key="ButtonDashed.Small"
                  BasedOn="{StaticResource ButtonDashed}"
                  TargetType="Button">
        <Setter Property="Height"
                Value="20" />
        <Setter Property="Padding"
                Value="6,1" />
        <Setter Property="hc:IconElement.Height"
                Value="12" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonDashedPrimary"
                  BasedOn="{StaticResource ButtonDashedBaseStyle}"
                  TargetType="Button">
        <Setter Property="Foreground"
                Value="{DynamicResource PrimaryBrush}" />
        <Setter Property="BorderBrush"
                Value="{DynamicResource PrimaryBrush}" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonDashedPrimary.Small"
                  BasedOn="{StaticResource ButtonDashedPrimary}"
                  TargetType="Button">
        <Setter Property="Height"
                Value="20" />
        <Setter Property="Padding"
                Value="6,1" />
        <Setter Property="hc:IconElement.Height"
                Value="12" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonDashedSuccess"
                  BasedOn="{StaticResource ButtonDashedBaseStyle}"
                  TargetType="Button">
        <Setter Property="Foreground"
                Value="{DynamicResource SuccessBrush}" />
        <Setter Property="BorderBrush"
                Value="{DynamicResource SuccessBrush}" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonDashedSuccess.Small"
                  BasedOn="{StaticResource ButtonDashedSuccess}"
                  TargetType="Button">
        <Setter Property="Height"
                Value="20" />
        <Setter Property="Padding"
                Value="6,1" />
        <Setter Property="hc:IconElement.Height"
                Value="12" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonDashedInfo"
                  BasedOn="{StaticResource ButtonDashedBaseStyle}"
                  TargetType="Button">
        <Setter Property="Foreground"
                Value="{DynamicResource InfoBrush}" />
        <Setter Property="BorderBrush"
                Value="{DynamicResource InfoBrush}" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonDashedInfo.Small"
                  BasedOn="{StaticResource ButtonDashedInfo}"
                  TargetType="Button">
        <Setter Property="Height"
                Value="20" />
        <Setter Property="Padding"
                Value="6,1" />
        <Setter Property="hc:IconElement.Height"
                Value="12" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonDashedWarning"
                  BasedOn="{StaticResource ButtonDashedBaseStyle}"
                  TargetType="Button">
        <Setter Property="Foreground"
                Value="{DynamicResource WarningBrush}" />
        <Setter Property="BorderBrush"
                Value="{DynamicResource WarningBrush}" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonDashedWarning.Small"
                  BasedOn="{StaticResource ButtonDashedWarning}"
                  TargetType="Button">
        <Setter Property="Height"
                Value="20" />
        <Setter Property="Padding"
                Value="6,1" />
        <Setter Property="hc:IconElement.Height"
                Value="12" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonDashedDanger"
                  BasedOn="{StaticResource ButtonDashedBaseStyle}"
                  TargetType="Button">
        <Setter Property="Foreground"
                Value="{DynamicResource DangerBrush}" />
        <Setter Property="BorderBrush"
                Value="{DynamicResource DangerBrush}" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonDashedDanger.Small"
                  BasedOn="{StaticResource ButtonDashedDanger}"
                  TargetType="Button">
        <Setter Property="Height"
                Value="20" />
        <Setter Property="Padding"
                Value="6,1" />
        <Setter Property="hc:IconElement.Height"
                Value="12" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonIcon"
                  BasedOn="{StaticResource ButtonBaseStyle}"
                  TargetType="Button">
        <Setter Property="Background"
                Value="Transparent" />
        <Setter Property="BorderBrush"
                Value="Transparent" />
        <Setter Property="Foreground"
                Value="{DynamicResource PrimaryTextBrush}" />
        <Setter Property="hc:BorderElement.CornerRadius"
                Value="0" />
        <Setter Property="CornerRadius"
                Value="{Binding $self.(hc:BorderElement.CornerRadius)}" />
        <Setter Property="Template">
            <ControlTemplate>
                <Border BorderThickness="{TemplateBinding BorderThickness}"
                        Background="{TemplateBinding Background}"
                        BorderBrush="{TemplateBinding BorderBrush}"
                        CornerRadius="{TemplateBinding CornerRadius}">
                    <ContentControl HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                    VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                                    Margin="{TemplateBinding Padding}">
                        <Path Fill="{TemplateBinding Foreground}"
                              Stretch="Uniform"
                              Width="{TemplateBinding hc:IconElement.Width}"
                              Height="{TemplateBinding hc:IconElement.Height}"
                              Data="{TemplateBinding hc:IconElement.Geometry}" />
                    </ContentControl>
                </Border>
            </ControlTemplate>
        </Setter>
    </ControlTheme>

    <ControlTheme x:Key="ButtonIcon.Small"
                  BasedOn="{StaticResource ButtonIcon}"
                  TargetType="Button">
        <Setter Property="Height"
                Value="20" />
        <Setter Property="Padding"
                Value="6,1" />
        <Setter Property="hc:IconElement.Height"
                Value="12" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonIconCircular"
                  BasedOn="{StaticResource ButtonBaseStyle}"
                  TargetType="Button">
        <Setter Property="Width"
                Value="{StaticResource DefaultControlHeight}" />
        <Setter Property="Foreground"
                Value="{DynamicResource PrimaryTextBrush}" />
        <Setter Property="hc:BorderElement.CornerRadius"
                Value="0" />
        <Setter Property="CornerRadius"
                Value="{Binding $self.(hc:BorderElement.CornerRadius)}" />
        <Setter Property="Padding"
                Value="6" />
        <Setter Property="Template">
            <ControlTemplate>
                <Border Theme="{StaticResource BorderCircular}"
                        BorderThickness="{TemplateBinding BorderThickness}"
                        Background="{TemplateBinding Background}"
                        BorderBrush="{TemplateBinding BorderBrush}">
                    <ContentControl HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                    VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                                    Margin="{TemplateBinding Padding}">
                        <Path Fill="{TemplateBinding Foreground}"
                              Stretch="Uniform"
                              Width="{TemplateBinding hc:IconElement.Width}"
                              Height="{TemplateBinding hc:IconElement.Height}"
                              Data="{TemplateBinding hc:IconElement.Geometry}" />
                    </ContentControl>
                </Border>
            </ControlTemplate>
        </Setter>
    </ControlTheme>

    <ControlTheme x:Key="ButtonIconCircular.Small"
                  BasedOn="{StaticResource ButtonIconCircular}"
                  TargetType="Button">
        <Setter Property="Width"
                Value="20" />
        <Setter Property="Height"
                Value="20" />
        <Setter Property="Padding"
                Value="1" />
        <Setter Property="hc:IconElement.Height"
                Value="12" />
    </ControlTheme>

    <ControlTheme x:Key="ButtonCustom"
                  TargetType="Button">
        <Setter Property="Foreground"
                Value="{DynamicResource PrimaryTextBrush}" />
        <Setter Property="Background"
                Value="{x:Null}" />
        <Setter Property="HorizontalContentAlignment"
                Value="Center" />
        <Setter Property="VerticalContentAlignment"
                Value="Center" />
        <Setter Property="Padding"
                Value="0" />
        <Setter Property="BorderThickness"
                Value="0" />
        <Setter Property="hc:BorderElement.CornerRadius"
                Value="{StaticResource DefaultCornerRadius}" />
        <Setter Property="CornerRadius"
                Value="{Binding $self.(hc:BorderElement.CornerRadius)}" />
        <Setter Property="Template">
            <ControlTemplate TargetType="Button">
                <ContentPresenter Padding="{TemplateBinding Padding}"
                                  HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
                                  VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
                                  CornerRadius="{TemplateBinding CornerRadius}"
                                  BorderThickness="{TemplateBinding BorderThickness}"
                                  BorderBrush="{TemplateBinding BorderBrush}"
                                  Background="{TemplateBinding Background}"
                                  Content="{TemplateBinding Content}"
                                  ContentTemplate="{TemplateBinding ContentTemplate}"
                                  RecognizesAccessKey="True" />
            </ControlTemplate>
        </Setter>

        <Style Selector="^:pointerover /template/ ContentPresenter">
            <Setter Property="Opacity"
                    Value="0.9" />
            <Setter Property="Background"
                    Value="{Binding $self.(hc:BackgroundSwitchElement.MouseHoverBackground)}" />
        </Style>

        <Style Selector="^:pressed /template/ ContentPresenter">
            <Setter Property="Opacity"
                    Value="0.6" />
            <Setter Property="Background"
                    Value="{Binding $self.(hc:BackgroundSwitchElement.MouseDownBackground)}" />
        </Style>

        <Style Selector="^:disabled">
            <Setter Property="Opacity"
                    Value="0.4" />
        </Style>
    </ControlTheme>
</ResourceDictionary>