Control the height of MaterialDesignDataGridColumnHeader

[xhuan8]

The height of DataGridColumnHeader is larger than expected, when try to set Height and Padding, none of them working.

<Style TargetType="DataGridColumnHeader" BasedOn="{StaticResource MaterialDesignDataGridColumnHeader}">
    <Setter Property="Padding" Value="2"/>
    <Setter Property="Height" Value="30"/>
</Style>

<Style x:Key="MaterialDesignDataGridColumnHeader" TargetType="{x:Type DataGridColumnHeader}">
    <Setter Property="BorderBrush" Value="{Binding HorizontalGridLinesBrush , RelativeSource={RelativeSource AncestorType=DataGrid}}" />
    <Setter Property="BorderThickness" Value="{Binding GridLinesVisibility , RelativeSource={RelativeSource AncestorType=DataGrid}, Converter={StaticResource GridLinesVisibilityBorderToThicknessConverter}}" />
    <Setter Property="Foreground" Value="{DynamicResource MaterialDesign.Brush.Header.Foreground}" />
    <Setter Property="Padding" Value="{Binding RelativeSource={RelativeSource Self}, Path=(wpf:DataGridAssist.ColumnHeaderPadding)}" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type DataGridColumnHeader}">
                <ControlTemplate.Resources>
                    <Storyboard AllowsTransparency="GoToVisible">
                        <DoubleAnimationUsingKeyFrames TargetName="SortDirectionIndicator" TargetProperty="Width">
                            <EasingDoubleKeyFrame KeyTime="0:0:0.0" Value="0" />
                            <EasingDoubleKeyFrame KeyTime="0:0:0.2" Value="12" />
                        </DoubleAnimationUsingKeyFrames>
                    </Storyboard>
                    <Storyboard AllowsTransparency="GoToHidden">
                        <DoubleAnimationUsingKeyFrames TargetName="SortDirectionIndicator" TargetProperty="Width">
                            <EasingDoubleKeyFrame KeyTime="0:0:0.0" Value="12" />
                            <EasingDoubleKeyFrame KeyTime="0:0:0.2" Value="0" />
                        </DoubleAnimationUsingKeyFrames>
                    </Storyboard>
                </ControlTemplate.Resources>
                <ControlTemplate.Triggers>
                    <Trigger Property="UIElement.IsMouseOver" Value="True">
                        <Setter Value="{DynamicResource MaterialDesign.Brush.Foreground}" Property="Foreground" />
                    </Trigger>
                    <Trigger Property="DataGridColumnHeader.SortDirection" Value="Ascending">
                        <Setter Value="{DynamicResource MaterialDesign.Brush.Foreground}" Property="Foreground" />
                    </Trigger>
                    <Trigger Property="DataGridColumnHeader.SortDirection" Value="Descending">
                        <Setter Value="{DynamicResource MaterialDesign.Brush.Foreground}" Property="Foreground" />
                    </Trigger>
                    <Trigger SourceName="SortDirectionIndicator" Property="wpf:ListSortDirectionIndicator.IsNeutral" Value="False">
                        <Trigger.EnterActions>
                            <BeginStoryboard Name="GoToVisible" Storyboard="{StaticResource GoToVisible}" />
                        </Trigger.EnterActions>
                        <Trigger.ExitActions>
                            <RemoveStoryboard BeginStoryboardName="GoToVisible" />
                            <BeginStoryboard Storyboard="{StaticResource GoToHidden}" />
                        </Trigger.ExitActions>
                    </Trigger>
                </ControlTemplate.Triggers>
                <Grid Background="Transparent">
                    <Border Padding="{TemplateBinding Padding}" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}">
                        <Grid HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}">
                            <wpf:ListSortDirectionIndicator Name="SortDirectionIndicator" Width="0" Height="12" Margin="-16,0,0,0" HorizontalAlignment="Left" IsTabStop="False" ListSortDirection="{TemplateBinding SortDirection}" Opacity="0.45" Visibility="{Binding CanUserSortColumns , RelativeSource={RelativeSource AncestorType=DataGrid}, Converter={StaticResource BooleanToVisibilityConverter}}" />
                            <ContentPresenter VerticalAlignment="{TemplateBinding VerticalContentAlignment}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}">
                                <ContentPresenter.Resources>
                                    <Style TargetType="{x:Type TextBlock}">
                                        <Setter x:Key="{x:Type TextBlock}" Property="TextTrimming" Value="WordEllipsis" />
                                        <Setter Property="wpf:TextBlockAssist.AutoToolTip" Value="True" />
                                    </Style>
                                </ContentPresenter.Resources>
                            </ContentPresenter>
                        </Grid>
                    </Border>
                    <Thumb Name="PART_LeftHeaderGripper" HorizontalAlignment="Left" Style="{StaticResource MaterialDesignGridColumnHeaderGripper}" />
                    <Thumb Name="PART_RightHeaderGripper" HorizontalAlignment="Right" Style="{StaticResource MaterialDesignGridColumnHeaderGripper}" />
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
    <Setter Property="TextBlock.FontWeight" Value="Medium" />
    <Setter Property="VerticalContentAlignment" Value="Center" />
</Style>