ContextMenu 样式和模板

本主题介绍 ContextMenu 控件的样式和模板。 可以修改默认 ControlTemplate 以赋予控件独特的外观。 有关详细信息,请参阅为控件创建模板

ContextMenu 部件

ContextMenu 控件没有任何命名部件。

ContextMenu 创建一个 ControlTemplate 时,你的模板可能在 ScrollViewer 中包含一个 ItemsPresenter。 (ItemsPresenter 显示 ContextMenu 中的每个项;ScrollViewer 支持在控件内滚动)。 如果 ItemsPresenter 不是 ScrollViewer 的直接子元素,则必须为 ItemsPresenter 指定名称 ItemsPresenter

ContextMenu 状态

下表列出了 ContextMenu 控件的可视状态。

VisualState 名称 VisualStateGroup 名称 说明
有效 ValidationStates 该控件使用 Validation 类,Validation.HasError 附加属性为 false
InvalidFocused ValidationStates 如果控件具有焦点,则 Validation.HasError 附加属性为 true
InvalidUnfocused ValidationStates Validation.HasError 附加属性是让控件不具有焦点的 true

ContextMenu ControlTemplate 示例

以下示例演示如何定义 ContextMenu 控件的 ControlTemplate

<Style TargetType="{x:Type ContextMenu}">
  <Setter Property="SnapsToDevicePixels"
          Value="True" />
  <Setter Property="OverridesDefaultStyle"
          Value="True" />
  <Setter Property="Grid.IsSharedSizeScope"
          Value="true" />
  <Setter Property="HasDropShadow"
          Value="True" />
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type ContextMenu}">
        <Border x:Name="Border"
                Background="{StaticResource MenuPopupBrush}"
                BorderThickness="1">
          <Border.BorderBrush>
            <SolidColorBrush Color="{StaticResource BorderMediumColor}" />
          </Border.BorderBrush>
          <StackPanel IsItemsHost="True"
                      KeyboardNavigation.DirectionalNavigation="Cycle" />
        </Border>
        <ControlTemplate.Triggers>
          <Trigger Property="HasDropShadow"
                   Value="true">
            <Setter TargetName="Border"
                    Property="Padding"
                    Value="0,3,0,3" />
            <Setter TargetName="Border"
                    Property="CornerRadius"
                    Value="4" />
          </Trigger>
        </ControlTemplate.Triggers>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

ControlTemplate 使用以下资源。

<!--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