ShrlAlgoToolkit/NeuWPF/NeoUI/Controls/DatePickerStyle.xaml

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:svd="clr-namespace:NeoUI.Controls.Decorations"
    xmlns:sve="clr-namespace:NeoUI.Effects"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary Source="CalendarStyle.xaml" />
    </ResourceDictionary.MergedDictionaries>

    <Style TargetType="{x:Type DatePickerTextBox}" x:Key="DatePickerTextBoxDefault">
        <Setter Property="Foreground" Value="{DynamicResource TextPrimaryBrush}" />
        <Setter Property="Background" Value="{DynamicResource BackgroundFloatingBrush}" />
        <Setter Property="Padding" Value="3" />
        <Setter Property="ScrollViewer.PanningMode" Value="VerticalFirst" />
        <Setter Property="Stylus.IsFlicksEnabled" Value="False" />
        <Setter Property="FontSize" Value="14" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type DatePickerTextBox}">
                    <ControlTemplate.Resources>
                        <!--  聚焦对象  -->
                        <Storyboard x:Key="TextBox.FocusEffect">
                            <DoubleAnimation
                                Duration="0:0:0.2"
                                Storyboard.TargetName="Border"
                                Storyboard.TargetProperty="Intensity"
                                To="0.5" />
                        </Storyboard>
                        <!--  取消聚焦对象  -->
                        <Storyboard x:Key="TextBox.LeaveEffect">
                            <DoubleAnimation
                                Duration="0:0:0.2"
                                Storyboard.TargetName="Border"
                                Storyboard.TargetProperty="Intensity"
                                To="0.2" />
                        </Storyboard>
                    </ControlTemplate.Resources>
                    <Grid>
                        <Grid>
                            <svd:SlotBorder
                                Background="{TemplateBinding Background}"
                                BorderBrush="{TemplateBinding BorderBrush}"
                                BorderThickness="{TemplateBinding BorderThickness}"
                                Intensity="0.4"
                                Padding="{TemplateBinding Padding}"
                                x:Name="Border">

                                <ContentControl
                                    Focusable="False"
                                    HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                    IsHitTestVisible="False"
                                    Margin="5,0,0,0"
                                    Opacity="0"
                                    VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                                    x:Name="PART_Watermark" />

                            </svd:SlotBorder>
                            <ScrollViewer
                                HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
                                VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
                                x:Name="PART_ContentHost" />
                        </Grid>
                        <VisualStateManager.VisualStateGroups>
                            <!--  占位符显示  -->
                            <!--  https://learn.microsoft.com/en-us/dotnet/desktop/wpf/controls/datepicker-styles-and-templates  -->
                            <!--  DataPicker自带有这个状态，所以可以直接生效  -->
                            <VisualStateGroup x:Name="WatermarkStates">
                                <VisualStateGroup.Transitions>
                                    <VisualTransition GeneratedDuration="0" />
                                </VisualStateGroup.Transitions>
                                <VisualState x:Name="Unwatermarked" />
                                <VisualState x:Name="Watermarked">
                                    <Storyboard>
                                        <DoubleAnimation
                                            Duration="0"
                                            Storyboard.TargetName="PART_Watermark"
                                            Storyboard.TargetProperty="Opacity"
                                            To="1" />
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                        </VisualStateManager.VisualStateGroups>
                    </Grid>
                    <ControlTemplate.Triggers>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsMouseOver" Value="false" />
                                <Condition Property="IsKeyboardFocused" Value="false" />
                            </MultiTrigger.Conditions>
                            <MultiTrigger.EnterActions>
                                <BeginStoryboard Storyboard="{StaticResource TextBox.LeaveEffect}" />
                            </MultiTrigger.EnterActions>
                            <MultiTrigger.ExitActions>
                                <BeginStoryboard Storyboard="{StaticResource TextBox.FocusEffect}" />
                            </MultiTrigger.ExitActions>
                        </MultiTrigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <Style BasedOn="{StaticResource DatePickerTextBoxDefault}" TargetType="{x:Type DatePickerTextBox}" />

    <Style TargetType="{x:Type DatePicker}">
        <Setter Property="Foreground" Value="{DynamicResource TextPrimaryBrush}" />
        <Setter Property="IsTodayHighlighted" Value="True" />
        <Setter Property="SelectedDateFormat" Value="Short" />
        <Setter Property="Background" Value="{DynamicResource BackgroundContainerBrush}" />
        <Setter Property="Padding" Value="0" />
        <!--<Setter Property="Margin" Value="0"/>-->
        <Setter Property="CalendarStyle" Value="{StaticResource PickerCalendarStyle}" />
        <Setter Property="BorderThickness" Value="1" />
        <Setter Property="MinWidth" Value="150" />
        <Setter Property="BorderBrush" Value="Transparent" />
        <Setter Property="BorderThickness" Value="1" />
        <Setter Property="HorizontalContentAlignment" Value="Stretch" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type DatePicker}">
                    <ControlTemplate.Resources>
                        <Style TargetType="{x:Type Button}" x:Key="CalendarPickerButton">
                            <Setter Property="Template">
                                <Setter.Value>
                                    <ControlTemplate TargetType="{x:Type Button}">
                                        <Grid x:Name="IconBox">
                                            <Grid.RowDefinitions>
                                                <RowDefinition Height="*" />
                                                <RowDefinition Height="2*" />
                                            </Grid.RowDefinitions>
                                            <Border
                                                Background="{DynamicResource PrimaryGradientBrush}"
                                                CornerRadius="3,3,0,0"
                                                Grid.Row="0" />
                                            <Border
                                                Background="{DynamicResource BackgroundLayoutBrush}"
                                                CornerRadius="0,0,3,3"
                                                Grid.Row="1" />
                                            <Path
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                                                Fill="{DynamicResource TextSecondaryBrush}"
                                                Grid.Row="1"
                                                SnapsToDevicePixels="True"
                                                Stretch="Uniform"
                                                Width="12" />
                                            <Path
                                                Data="M353.62,210.77V141.62l-14.84,69.15H318.36l-14.85-69.15v69.15                                                       H283.23V114.66h31l14.3,70.52,14.29-70.52h31.45v96.11Zm75.31,0-3.26-21.92                                                       H407.83l-3.4,21.92H381.69l19.47-96.11h31l19.46,96.11Zm-12-80.86-6.53,42.75                                                       h12.93ZM492.53,177v33.76H469.8V177l-22.88-62.35H469.8                                                       l11.7,42.48,11.71-42.48h23.28Zm0,0"
                                                Fill="{DynamicResource BackgroundLayoutBrush}"
                                                Grid.Row="0"
                                                SnapsToDevicePixels="True"
                                                Stretch="Uniform"
                                                Width="12" />
                                            <Grid.Effect>
                                                <DropShadowEffect
                                                    BlurRadius="4"
                                                    Color="{DynamicResource DarkShadowColor}"
                                                    Opacity="0.6"
                                                    ShadowDepth="1" />
                                            </Grid.Effect>
                                        </Grid>
                                        <ControlTemplate.Triggers>
                                            <Trigger Property="IsMouseOver" Value="True">
                                                <Setter Property="Effect">
                                                    <Setter.Value>
                                                        <sve:BrightnessContrastEffect Brightness="0.08" />
                                                    </Setter.Value>
                                                </Setter>
                                                <Setter Property="Effect" TargetName="IconBox">
                                                    <Setter.Value>
                                                        <DropShadowEffect
                                                            BlurRadius="4"
                                                            Color="{DynamicResource DarkShadowColor}"
                                                            Opacity="0.4"
                                                            ShadowDepth="1" />
                                                    </Setter.Value>
                                                </Setter>
                                            </Trigger>
                                            <Trigger Property="IsPressed" Value="True">
                                                <Setter Property="Effect">
                                                    <Setter.Value>
                                                        <sve:BrightnessContrastEffect Brightness="0.06" />
                                                    </Setter.Value>
                                                </Setter>
                                            </Trigger>
                                        </ControlTemplate.Triggers>
                                    </ControlTemplate>
                                </Setter.Value>
                            </Setter>
                        </Style>

                    </ControlTemplate.Resources>

                    <Grid
                        HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                        Margin="{TemplateBinding Padding}"
                        SnapsToDevicePixels="True"
                        VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                        x:Name="PART_Root">
                        <DatePickerTextBox
                            Background="{TemplateBinding Background}"
                            BorderBrush="{TemplateBinding BorderBrush}"
                            BorderThickness="{TemplateBinding BorderThickness}"
                            Focusable="{TemplateBinding Focusable}"
                            Grid.Column="0"
                            Grid.Row="0"
                            HorizontalContentAlignment="Left"
                            Style="{StaticResource DatePickerTextBoxDefault}"
                            VerticalContentAlignment="Center"
                            x:Name="PART_TextBox" />
                        <Border
                            Background="Transparent"
                            HorizontalAlignment="Right"
                            Width="40" />
                        <Button
                            HorizontalAlignment="Right"
                            Margin="5"
                            Style="{StaticResource CalendarPickerButton}"
                            Width="28"
                            x:Name="PART_Button" />

                        <!--  Disabled Mask  -->
                        <Border
                            Background="{DynamicResource BackgroundLayoutBrush}"
                            CornerRadius="4"
                            IsHitTestVisible="False"
                            Margin="4"
                            Opacity="0"
                            x:Name="DisabledMask" />
                        <Popup
                            AllowsTransparency="True"
                            Placement="Bottom"
                            PlacementTarget="{Binding ElementName=PART_Button}"
                            StaysOpen="False"
                            x:Name="PART_Popup" />
                    </Grid>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsEnabled" Value="False">
                            <Setter Property="Opacity" TargetName="DisabledMask" Value="0.6" />
                        </Trigger>
                        <DataTrigger Binding="{Binding Source={x:Static SystemParameters.HighContrast}}" Value="false">
                            <Setter Property="Foreground" TargetName="PART_TextBox" Value="{Binding Foreground, RelativeSource={RelativeSource TemplatedParent}}" />
                        </DataTrigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

</ResourceDictionary>