ScrollViewer 樣式和範本

本主題說明 ScrollViewer 控件項的樣式和範本。 您可以修改預設的 ControlTemplate，為控制項提供唯一的外觀。 如需詳細資訊，請參閱為控制項建立範本。

ScrollViewer 組件

下表列出 ScrollViewer 控件項的具名組件。

部分	類型	描述
PART_ScrollContentPresenter	ScrollContentPresenter	ScrollViewer 中內容的預留位置。
PART_HorizontalScrollBar	ScrollBar	用來水平捲動內容的 ScrollBar。
PART_VerticalScrollBar	ScrollBar	用來垂直捲動內容的 ScrollBar。

ScrollViewer 狀態

下表列出 ScrollViewer 控制項的視覺物件狀態。

VisualState 名稱	VisualStateGroup 名稱	描述
有效	ValidationStates	控制項會使用 Validation 類別，且 Validation.HasError 的附加屬性為 false。
InvalidFocused	ValidationStates	Validation.HasError 附加屬性為具有焦點控制項的 true。
InvalidUnfocused	ValidationStates	Validation.HasError 附加屬性為不具有焦點控制項的 true。

ScrollViewer ControlTemplate 範例

下列範例顯示如何定義 ScrollViewer 控制項的 ControlTemplate。

<Style x:Key="LeftScrollViewer"
       TargetType="{x:Type ScrollViewer}">
  <Setter Property="OverridesDefaultStyle"
          Value="True" />
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type ScrollViewer}">
        <Grid>
          <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto" />
            <ColumnDefinition />
          </Grid.ColumnDefinitions>
          <Grid.RowDefinitions>
            <RowDefinition />
            <RowDefinition Height="Auto" />
          </Grid.RowDefinitions>
          <Border Grid.Column="1"
                  BorderThickness="0,1,1,1">
            <Border.BorderBrush>
              <SolidColorBrush Color="{DynamicResource BorderMediumColor}" />
            </Border.BorderBrush>
            <ScrollContentPresenter CanContentScroll="{TemplateBinding CanContentScroll}" />
          </Border>
          <ScrollBar x:Name="PART_VerticalScrollBar"
                     Value="{TemplateBinding VerticalOffset}"
                     Maximum="{TemplateBinding ScrollableHeight}"
                     ViewportSize="{TemplateBinding ViewportHeight}"
                     Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}"/>
          <ScrollBar x:Name="PART_HorizontalScrollBar"
                     Orientation="Horizontal"
                     Grid.Row="1"
                     Grid.Column="1"
                     Value="{TemplateBinding HorizontalOffset}"
                     Maximum="{TemplateBinding ScrollableWidth}"
                     ViewportSize="{TemplateBinding ViewportWidth}"
                     Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}"/>

        </Grid>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

上述範例使用下列一或多項資源。

<!--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>

如需完整的範例，請參閱使用 ControlTemplate 設定樣式範例。

另請參閱

• Style
• ControlTemplate
• 控制項的樣式和範本
• 控制項自訂
• 設定樣式和範本
• 建立控制項範本