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滑块样式和模板

本主题介绍 Slider 控件的样式和模板。 可以修改默认 ControlTemplate，使控件具有唯一的外观。 有关详细信息，请参阅 为控件创建模板。

滑块部件

下表列出了 Slider 控件的命名部件。

部件 类型 DESCRIPTION
PART_Track Track 用于指示Slider位置的元素的容器。
PART_SelectionRange FrameworkElement 沿Slider显示选择范围的元素。 仅当属性为true时，IsSelectionRangeEnabled选择范围才可见。

滑块状态

下表列出了 Slider 控件的视觉状态。

VisualState 名称 VisualStateGroup 名称 DESCRIPTION
正常 CommonStates 默认状态。
鼠标悬停 CommonStates 鼠标指针悬停在控件上。
禁用 CommonStates 控件已禁用。
已设定焦点 FocusStates 控件有焦点。
失去焦点 FocusStates 控件没有焦点。
有效 ValidationStates 该控件使用 Validation 类，Validation.HasError 附加属性为 false。
无效聚焦 ValidationStates 如果控件具有焦点，则 Validation.HasError 附加属性为 true。
无效未聚焦 ValidationStates 如果控件不具有焦点，则 Validation.HasError 附加属性为 true。

Slider ControlTemplate 示例

以下示例演示如何为 ControlTemplate 控件定义 Slider。

<Style x:Key="SliderButtonStyle"
       TargetType="{x:Type RepeatButton}">
  <Setter Property="SnapsToDevicePixels"
          Value="true" />
  <Setter Property="OverridesDefaultStyle"
          Value="true" />
  <Setter Property="IsTabStop"
          Value="false" />
  <Setter Property="Focusable"
          Value="false" />
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type RepeatButton}">
        <Border Background="Transparent" />
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

<Style x:Key="SliderThumbStyle"
       TargetType="{x:Type Thumb}">
  <Setter Property="SnapsToDevicePixels"
          Value="true" />
  <Setter Property="OverridesDefaultStyle"
          Value="true" />
  <Setter Property="Height"
          Value="14" />
  <Setter Property="Width"
          Value="14" />
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type Thumb}">
        <Ellipse x:Name="Ellipse"
                 StrokeThickness="1">
          <Ellipse.Stroke>
            <LinearGradientBrush StartPoint="0,0"
                                 EndPoint="0,1">
              <LinearGradientBrush.GradientStops>
                <GradientStopCollection>
                  <GradientStop Color="{DynamicResource BorderLightColor}"
                                Offset="0.0" />
                  <GradientStop Color="{DynamicResource BorderDarkColor}"
                                Offset="1.0" />
                </GradientStopCollection>
              </LinearGradientBrush.GradientStops>
            </LinearGradientBrush>
          </Ellipse.Stroke>
          <Ellipse.Fill>
            <LinearGradientBrush EndPoint="0.5,1"
                                 StartPoint="0.5,0">
              <GradientStop Color="{DynamicResource ControlMediumColor}"
                            Offset="1" />
              <GradientStop Color="{DynamicResource ControlLightColor}" />
            </LinearGradientBrush>
          </Ellipse.Fill>
          <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="CommonStates">
              <VisualState x:Name="Normal" />
              <VisualState x:Name="MouseOver">
                <Storyboard>
                  <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Fill).
                    (GradientBrush.GradientStops)[0].(GradientStop.Color)"
                                                Storyboard.TargetName="Ellipse">
                    <EasingColorKeyFrame KeyTime="0"
                                         Value="{StaticResource ControlMouseOverColor}" />
                  </ColorAnimationUsingKeyFrames>
                </Storyboard>
              </VisualState>
              <VisualState x:Name="Pressed">
                <Storyboard>
                  <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Fill).
                    (GradientBrush.GradientStops)[0].(GradientStop.Color)"
                                                Storyboard.TargetName="Ellipse">
                    <EasingColorKeyFrame KeyTime="0"
                                         Value="{StaticResource ControlPressedColor}" />
                  </ColorAnimationUsingKeyFrames>
                </Storyboard>
              </VisualState>
              <VisualState x:Name="Disabled">
                <Storyboard>
                  <ColorAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Fill).
                    (GradientBrush.GradientStops)[0].(GradientStop.Color)"
                                                Storyboard.TargetName="Ellipse">
                    <EasingColorKeyFrame KeyTime="0"
                                         Value="{StaticResource DisabledControlDarkColor}" />
                  </ColorAnimationUsingKeyFrames>
                </Storyboard>
              </VisualState>
            </VisualStateGroup>
          </VisualStateManager.VisualStateGroups>
        </Ellipse>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

<!--Template when the orientation of the Slider is Horizontal.-->
<ControlTemplate x:Key="HorizontalSlider"
                 TargetType="{x:Type Slider}">
  <Grid>
    <Grid.RowDefinitions>
      <RowDefinition Height="Auto" />
      <RowDefinition Height="Auto"
                     MinHeight="{TemplateBinding MinHeight}" />
      <RowDefinition Height="Auto" />
    </Grid.RowDefinitions>
    <TickBar x:Name="TopTick"
             SnapsToDevicePixels="True"
             Placement="Top"
             Height="4"
             Visibility="Collapsed">
      <TickBar.Fill>
        <SolidColorBrush Color="{DynamicResource GlyphColor}" />
      </TickBar.Fill>
    </TickBar>
    <Border x:Name="TrackBackground"
            Margin="0"
            CornerRadius="2"
            Height="4"
            Grid.Row="1"
            BorderThickness="1">
      <Border.BorderBrush>
        <LinearGradientBrush StartPoint="0,0"
                             EndPoint="0,1">
          <LinearGradientBrush.GradientStops>
            <GradientStopCollection>
              <GradientStop Color="{DynamicResource BorderLightColor}"
                            Offset="0.0" />
              <GradientStop Color="{DynamicResource BorderDarkColor}"
                            Offset="1.0" />
            </GradientStopCollection>
          </LinearGradientBrush.GradientStops>
        </LinearGradientBrush>
      </Border.BorderBrush>
      <Border.Background>
        <LinearGradientBrush StartPoint="0,0"
                             EndPoint="0,1">
          <LinearGradientBrush.GradientStops>
            <GradientStopCollection>
              <GradientStop Color="{DynamicResource ControlLightColor}"
                            Offset="0.0" />
              <GradientStop Color="{DynamicResource SliderTrackDarkColor}"
                            Offset="1.0" />
            </GradientStopCollection>
          </LinearGradientBrush.GradientStops>
        </LinearGradientBrush>
      </Border.Background>
    </Border>
    <Track Grid.Row="1"
           x:Name="PART_Track">
      <Track.DecreaseRepeatButton>
        <RepeatButton Style="{StaticResource SliderButtonStyle}"
                      Command="Slider.DecreaseLarge" />
      </Track.DecreaseRepeatButton>
      <Track.Thumb>
        <Thumb Style="{StaticResource SliderThumbStyle}" />
      </Track.Thumb>
      <Track.IncreaseRepeatButton>
        <RepeatButton Style="{StaticResource SliderButtonStyle}"
                      Command="Slider.IncreaseLarge" />
      </Track.IncreaseRepeatButton>
    </Track>
    <TickBar x:Name="BottomTick"
             SnapsToDevicePixels="True"
             Grid.Row="2"
             Fill="{TemplateBinding Foreground}"
             Placement="Bottom"
             Height="4"
             Visibility="Collapsed" />
  </Grid>
  <ControlTemplate.Triggers>
    <Trigger Property="TickPlacement"
             Value="TopLeft">
      <Setter TargetName="TopTick"
              Property="Visibility"
              Value="Visible" />
    </Trigger>
    <Trigger Property="TickPlacement"
             Value="BottomRight">
      <Setter TargetName="BottomTick"
              Property="Visibility"
              Value="Visible" />
    </Trigger>
    <Trigger Property="TickPlacement"
             Value="Both">
      <Setter TargetName="TopTick"
              Property="Visibility"
              Value="Visible" />
      <Setter TargetName="BottomTick"
              Property="Visibility"
              Value="Visible" />
    </Trigger>
  </ControlTemplate.Triggers>
</ControlTemplate>

<!--Template when the orientation of the Slider is Vertical.-->
<ControlTemplate x:Key="VerticalSlider"
                 TargetType="{x:Type Slider}">
  <Grid>
    <Grid.ColumnDefinitions>
      <ColumnDefinition Width="Auto" />
      <ColumnDefinition Width="Auto"
                        MinWidth="{TemplateBinding MinWidth}" />
      <ColumnDefinition Width="Auto" />
    </Grid.ColumnDefinitions>
    <TickBar x:Name="TopTick"
             SnapsToDevicePixels="True"
             Placement="Left"
             Width="4"
             Visibility="Collapsed">
      <TickBar.Fill>
        <SolidColorBrush Color="{DynamicResource GlyphColor}" />
      </TickBar.Fill>
    </TickBar>

    <Border x:Name="TrackBackground"
            Margin="0"
            CornerRadius="2"
            Width="4"
            Grid.Column="1"
            BorderThickness="1">
      <Border.BorderBrush>
        <LinearGradientBrush StartPoint="0,0"
                             EndPoint="1,0">
          <LinearGradientBrush.GradientStops>
            <GradientStopCollection>
              <GradientStop Color="{DynamicResource BorderLightColor}"
                            Offset="0.0" />
              <GradientStop Color="{DynamicResource BorderDarkColor}"
                            Offset="1.0" />
            </GradientStopCollection>
          </LinearGradientBrush.GradientStops>
        </LinearGradientBrush>

      </Border.BorderBrush>
      <Border.Background>
        <LinearGradientBrush EndPoint="1,0"
                             StartPoint="0.25,0">
          <GradientStop Color="{DynamicResource ControlLightColor}"
                        Offset="0" />
          <GradientStop Color="{DynamicResource SliderTrackDarkColor}"
                        Offset="1" />
        </LinearGradientBrush>
      </Border.Background>
    </Border>
    <Track Grid.Column="1"
           x:Name="PART_Track">
      <Track.DecreaseRepeatButton>
        <RepeatButton Style="{StaticResource SliderButtonStyle}"
                      Command="Slider.DecreaseLarge" />
      </Track.DecreaseRepeatButton>
      <Track.Thumb>
        <Thumb Style="{StaticResource SliderThumbStyle}" />
      </Track.Thumb>
      <Track.IncreaseRepeatButton>
        <RepeatButton Style="{StaticResource SliderButtonStyle}"
                      Command="Slider.IncreaseLarge" />
      </Track.IncreaseRepeatButton>
    </Track>
    <TickBar x:Name="BottomTick"
             SnapsToDevicePixels="True"
             Grid.Column="2"
             Fill="{TemplateBinding Foreground}"
             Placement="Right"
             Width="4"
             Visibility="Collapsed" />
  </Grid>
  <ControlTemplate.Triggers>
    <Trigger Property="TickPlacement"
             Value="TopLeft">
      <Setter TargetName="TopTick"
              Property="Visibility"
              Value="Visible" />
    </Trigger>
    <Trigger Property="TickPlacement"
             Value="BottomRight">
      <Setter TargetName="BottomTick"
              Property="Visibility"
              Value="Visible" />
    </Trigger>
    <Trigger Property="TickPlacement"
             Value="Both">
      <Setter TargetName="TopTick"
              Property="Visibility"
              Value="Visible" />
      <Setter TargetName="BottomTick"
              Property="Visibility"
              Value="Visible" />
    </Trigger>
  </ControlTemplate.Triggers>
</ControlTemplate>

<Style TargetType="{x:Type Slider}">
  <Setter Property="SnapsToDevicePixels"
          Value="true" />
  <Setter Property="OverridesDefaultStyle"
          Value="true" />
  <Style.Triggers>
    <Trigger Property="Orientation"
             Value="Horizontal">
      <Setter Property="MinWidth"
              Value="104" />
      <Setter Property="MinHeight"
              Value="21" />
      <Setter Property="Template"
              Value="{StaticResource HorizontalSlider}" />
    </Trigger>
    <Trigger Property="Orientation"
             Value="Vertical">
      <Setter Property="MinWidth"
              Value="21" />
      <Setter Property="MinHeight"
              Value="104" />
      <Setter Property="Template"
              Value="{StaticResource VerticalSlider}" />
    </Trigger>
  </Style.Triggers>
</Style>

前面的示例使用以下一个或多个资源。

<!--Control colors.-->
<Color x:Key="WindowColor">#FFE8EDF9</Color>
<Color x:Key="ContentAreaColorLight">#FFC5CBF9</Color>
<Color x:Key="ContentAreaColorDark">#FF7381F9</Color>

<Color x:Key="DisabledControlLightColor">#FFE8EDF9</Color>
<Color x:Key="DisabledControlDarkColor">#FFC5CBF9</Color>
<Color x:Key="DisabledForegroundColor">#FF888888</Color>

<Color x:Key="SelectedBackgroundColor">#FFC5CBF9</Color>
<Color x:Key="SelectedUnfocusedColor">#FFDDDDDD</Color>

<Color x:Key="ControlLightColor">White</Color>
<Color x:Key="ControlMediumColor">#FF7381F9</Color>
<Color x:Key="ControlDarkColor">#FF211AA9</Color>

<Color x:Key="ControlMouseOverColor">#FF3843C4</Color>
<Color x:Key="ControlPressedColor">#FF211AA9</Color>


<Color x:Key="GlyphColor">#FF444444</Color>
<Color x:Key="GlyphMouseOver">sc#1, 0.004391443, 0.002428215, 0.242281124</Color>

<!--Border colors-->
<Color x:Key="BorderLightColor">#FFCCCCCC</Color>
<Color x:Key="BorderMediumColor">#FF888888</Color>
<Color x:Key="BorderDarkColor">#FF444444</Color>

<Color x:Key="PressedBorderLightColor">#FF888888</Color>
<Color x:Key="PressedBorderDarkColor">#FF444444</Color>

<Color x:Key="DisabledBorderLightColor">#FFAAAAAA</Color>
<Color x:Key="DisabledBorderDarkColor">#FF888888</Color>

<Color x:Key="DefaultBorderBrushDarkColor">Black</Color>

<!--Control-specific resources.-->
<Color x:Key="HeaderTopColor">#FFC5CBF9</Color>
<Color x:Key="DatagridCurrentCellBorderColor">Black</Color>
<Color x:Key="SliderTrackDarkColor">#FFC5CBF9</Color>

<Color x:Key="NavButtonFrameColor">#FF3843C4</Color>

<LinearGradientBrush x:Key="MenuPopupBrush"
                     EndPoint="0.5,1"
                     StartPoint="0.5,0">
  <GradientStop Color="{DynamicResource ControlLightColor}"
                Offset="0" />
  <GradientStop Color="{DynamicResource ControlMediumColor}"
                Offset="0.5" />
  <GradientStop Color="{DynamicResource ControlLightColor}"
                Offset="1" />
</LinearGradientBrush>

<LinearGradientBrush x:Key="ProgressBarIndicatorAnimatedFill"
                     StartPoint="0,0"
                     EndPoint="1,0">
  <LinearGradientBrush.GradientStops>
    <GradientStopCollection>
      <GradientStop Color="#000000FF"
                    Offset="0" />
      <GradientStop Color="#600000FF"
                    Offset="0.4" />
      <GradientStop Color="#600000FF"
                    Offset="0.6" />
      <GradientStop Color="#000000FF"
                    Offset="1" />
    </GradientStopCollection>
  </LinearGradientBrush.GradientStops>
</LinearGradientBrush>

有关完整示例，请参阅使用 ControlTemplates 设置样式示例。

另请参阅