Ursa.Avalonia/src/Ursa.Themes.Semi/Controls/Drawer.axaml

<ResourceDictionary xmlns="https://github.com/avaloniaui"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:u="https://irihi.tech/ursa">
    <ControlTheme TargetType="u:CustomDrawerControl" x:Key="{x:Type u:CustomDrawerControl}">
        <Setter Property="VerticalAlignment" Value="Stretch"></Setter>
        <Setter Property="HorizontalAlignment" Value="Stretch"></Setter>
        <Setter Property="Template">
            <ControlTemplate TargetType="u:CustomDrawerControl">
                <Border Name="PART_Root" 
                        Margin="8 -1 -1 -1"
                        Padding="0"
                        HorizontalAlignment="Stretch"
                        VerticalAlignment="Stretch"
                        Classes="Shadow"
                        ClipToBounds="False"
                        CornerRadius="12 0 0 12"
                        BorderThickness="1 0 0 0"
                        IsHitTestVisible="True"
                        Theme="{DynamicResource CardBorder}">
                    <Border ClipToBounds="True" CornerRadius="{Binding #PART_Root.CornerRadius}">
                        <Grid RowDefinitions="Auto, *">
                            <ContentPresenter
                                Name="PART_ContentPresenter"
                                Grid.Row="0"
                                Grid.RowSpan="2"
                                Content="{TemplateBinding Content}" />
                            <Grid Grid.Row="0" ColumnDefinitions="*, Auto">
                                <Panel
                                    Name="{x:Static u:DialogControlBase.PART_TitleArea}"
                                    Grid.Column="0"
                                    Grid.ColumnSpan="2"
                                    Background="Transparent" />
                                <Button
                                    Name="{x:Static u:MessageBoxWindow.PART_CloseButton}"
                                    Grid.Column="1"
                                    Margin="0,24,24,0"
                                    DockPanel.Dock="Right"
                                    Theme="{DynamicResource CloseButton}" />
                            </Grid>
                        </Grid>
                    </Border>
                </Border>
            </ControlTemplate>
        </Setter>
        <Style Selector="^[Position=Right] /template/ Border#PART_Root">
            <Setter Property="Margin" Value="8 0 0 0" />
            <Setter Property="CornerRadius" Value="12 0 0  12" />
            <Setter Property="BorderThickness" Value="1 0 0 0" />
        </Style>
        <Style Selector="^[Position=Left] /template/ Border#PART_Root">
            <Setter Property="Margin" Value="0 0 8 0" />
            <Setter Property="CornerRadius" Value="0 12 12 0" />
            <Setter Property="BorderThickness" Value="0 0 1 0" />
        </Style>
        <Style Selector="^[Position=Top] /template/ Border#PART_Root">
            <Setter Property="Margin" Value="0 0 0 8" />
            <Setter Property="CornerRadius" Value="0 0 12 12" />
            <Setter Property="BorderThickness" Value="0 0 0 1" />
        </Style>
        <Style Selector="^[Position=Bottom] /template/ Border#PART_Root">
            <Setter Property="Margin" Value="0 8 0 0" />
            <Setter Property="CornerRadius" Value="12 12 0 0" />
            <Setter Property="BorderThickness" Value="0 1 0 0" />
        </Style>
    </ControlTheme>
    
    <ControlTheme x:Key="{x:Type u:DefaultDrawerControl}" TargetType="u:DefaultDrawerControl">
        <Setter Property="VerticalAlignment" Value="Stretch"></Setter>
        <Setter Property="HorizontalAlignment" Value="Stretch"></Setter>
        <Setter Property="Template">
            <ControlTemplate TargetType="u:DefaultDrawerControl">
                <Border Name="PART_Root" 
                        Margin="8 -1 -1 -1"
                        Padding="0"
                        HorizontalAlignment="Stretch"
                        VerticalAlignment="Stretch"
                        Classes="Shadow"
                        ClipToBounds="False"
                        CornerRadius="12 0 0 12"
                        BorderThickness="1 0 0 0"
                        IsHitTestVisible="True"
                        Theme="{DynamicResource CardBorder}">
                    <Border ClipToBounds="True" CornerRadius="{Binding #PART_Root.CornerRadius}">
                        <Grid RowDefinitions="Auto, *, Auto">
                            <ScrollViewer Grid.Row="1">
                                <ContentPresenter
                                    Name="PART_ContentPresenter"
                                    Grid.Row="1"
                                    Margin="24,8"
                                    Content="{TemplateBinding Content}" />
                            </ScrollViewer>
                            <Grid Grid.Row="0" ColumnDefinitions=" *, Auto">
                                <TextBlock
                                    Name="PART_Title"
                                    Grid.Column="0"
                                    Margin="24,24,0,0"
                                    VerticalAlignment="Center"
                                    FontSize="16"
                                    FontWeight="Bold"
                                    IsHitTestVisible="False"
                                    IsVisible="{TemplateBinding Title,
                                                                Converter={x:Static ObjectConverters.IsNotNull}}"
                                    Text="{TemplateBinding Title}"
                                    TextWrapping="Wrap" />
                                <Button
                                    Name="{x:Static u:DrawerControlBase.PART_CloseButton}"
                                    Grid.Column="1"
                                    Margin="0,24,24,0"
                                    DockPanel.Dock="Right"
                                    Theme="{DynamicResource CloseButton}" />
                            </Grid>
                            <StackPanel
                                Grid.Row="2"
                                Margin="24,0,24,24"
                                HorizontalAlignment="Right"
                                Orientation="Horizontal">
                                <Button
                                    Name="{x:Static u:DefaultDialogControl.PART_CancelButton}"
                                    Margin="8,0,0,0"
                                    Classes="Tertiary"
                                    Content="{DynamicResource STRING_MENU_DIALOG_CANCEL}" />
                                <Button
                                    Name="{x:Static u:DefaultDialogControl.PART_NoButton}"
                                    Margin="8,0,0,0"
                                    Classes="Danger"
                                    Content="{DynamicResource STRING_MENU_DIALOG_NO}"
                                    Theme="{DynamicResource SolidButton}" />
                                <Button
                                    Name="{x:Static u:DefaultDialogControl.PART_YesButton}"
                                    Margin="8,0,0,0"
                                    Classes="Primary"
                                    Content="{DynamicResource STRING_MENU_DIALOG_YES}"
                                    Theme="{DynamicResource SolidButton}" />
                                <Button
                                    Name="{x:Static u:DefaultDialogControl.PART_OKButton}"
                                    Margin="8,0,0,0"
                                    Classes="Primary"
                                    Content="{DynamicResource STRING_MENU_DIALOG_OK}"
                                    Theme="{DynamicResource SolidButton}" />
                            </StackPanel>
                        </Grid>
                    </Border>
                </Border>
            </ControlTemplate>
        </Setter>
        <Style Selector="^[Position=Right] /template/ Border#PART_Root">
            <Setter Property="Margin" Value="8 0 0 0" />
            <Setter Property="CornerRadius" Value="12 0 0  12" />
            <Setter Property="BorderThickness" Value="1 0 0 0" />
        </Style>
        <Style Selector="^[Position=Left] /template/ Border#PART_Root">
            <Setter Property="Margin" Value="0 0 8 0" />
            <Setter Property="CornerRadius" Value="0 12 12 0" />
            <Setter Property="BorderThickness" Value="0 0 1 0" />
        </Style>
        <Style Selector="^[Position=Top] /template/ Border#PART_Root">
            <Setter Property="Margin" Value="0 0 0 8" />
            <Setter Property="CornerRadius" Value="0 0 12 12" />
            <Setter Property="BorderThickness" Value="0 0 0 1" />
        </Style>
        <Style Selector="^[Position=Bottom] /template/ Border#PART_Root">
            <Setter Property="Margin" Value="0 8 0 0" />
            <Setter Property="CornerRadius" Value="12 12 0 0" />
            <Setter Property="BorderThickness" Value="0 1 0 0" />
        </Style>
    </ControlTheme>
</ResourceDictionary>