[英]How to edit the Style of a Scrollbar of a ScrollViewer?
我已經知道如何通過編輯ScrollViewer模板的副本來編輯它的模板。 但是,如何編輯Scrollbar-位於ScrollViewer的樣式內?
(我想按照此答案中的建議更改其FadeOut
動畫的BeginTime
。我不想更改應用程序中所有Scrollbar的行為。)
如果有某種方法可以用代碼而不是XAML來做到這一點,那就太好了。
首先編輯滾動條的樣式模板並將其放置在頁面資源中,然后使用鍵(“ customScrollBar”)標識此資源
這是要編輯的ScrollBar樣式模板。
用適合您的開始時間進行編輯。
<Storyboard>
<FadeOutThemeAnimation BeginTime="1" TargetName="HorizontalPanningRoot" />
<FadeOutThemeAnimation BeginTime="1" TargetName="VerticalPanningRoot" />
<FadeOutThemeAnimation BeginTime="1" TargetName="HorizontalRoot" />
<FadeOutThemeAnimation BeginTime="1" TargetName="VerticalRoot" />
</Storyboard>
並添加以下scrollviewer樣式
<Style x:Key="customScrollViewer" TargetType="ScrollViewer">
<Setter Property="HorizontalScrollMode" Value="Auto" />
<Setter Property="VerticalScrollMode" Value="Auto" />
<Setter Property="IsHorizontalRailEnabled" Value="True" />
<Setter Property="IsVerticalRailEnabled" Value="True" />
<Setter Property="IsTabStop" Value="False" />
<Setter Property="ZoomMode" Value="Disabled" />
<Setter Property="HorizontalContentAlignment" Value="Left" />
<Setter Property="VerticalContentAlignment" Value="Top" />
<Setter Property="VerticalScrollBarVisibility" Value="Visible" />
<Setter Property="Padding" Value="0" />
<Setter Property="BorderThickness" Value="0" />
<Setter Property="BorderBrush" Value="Transparent" />
<Setter Property="Background" Value="Transparent" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ScrollViewer">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="ScrollingIndicatorStates">
<VisualStateGroup.Transitions>
<VisualTransition From="MouseIndicator" To="NoIndicator">
<Storyboard>
<FadeOutThemeAnimation TargetName="ScrollBarSeparator" BeginTime="0:0:3" />
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalScrollBar"
Storyboard.TargetProperty="IndicatorMode">
<DiscreteObjectKeyFrame KeyTime="0:0:3">
<DiscreteObjectKeyFrame.Value>
<ScrollingIndicatorMode>None</ScrollingIndicatorMode>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalScrollBar"
Storyboard.TargetProperty="IndicatorMode">
<DiscreteObjectKeyFrame KeyTime="0:0:3">
<DiscreteObjectKeyFrame.Value>
<ScrollingIndicatorMode>None</ScrollingIndicatorMode>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualTransition>
<VisualTransition From="TouchIndicator" To="NoIndicator">
<Storyboard>
<FadeOutThemeAnimation TargetName="ScrollBarSeparator" />
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalScrollBar"
Storyboard.TargetProperty="IndicatorMode">
<DiscreteObjectKeyFrame KeyTime="0:0:0.5">
<DiscreteObjectKeyFrame.Value>
<ScrollingIndicatorMode>None</ScrollingIndicatorMode>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalScrollBar"
Storyboard.TargetProperty="IndicatorMode">
<DiscreteObjectKeyFrame KeyTime="0:0:0.5">
<DiscreteObjectKeyFrame.Value>
<ScrollingIndicatorMode>None</ScrollingIndicatorMode>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualTransition>
</VisualStateGroup.Transitions>
<VisualState x:Name="NoIndicator">
<Storyboard>
<FadeOutThemeAnimation TargetName="ScrollBarSeparator" />
</Storyboard>
</VisualState>
<VisualState x:Name="TouchIndicator">
<Storyboard>
<FadeOutThemeAnimation TargetName="ScrollBarSeparator" />
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalScrollBar"
Storyboard.TargetProperty="IndicatorMode"
Duration="0">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<ScrollingIndicatorMode>TouchIndicator</ScrollingIndicatorMode>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalScrollBar"
Storyboard.TargetProperty="IndicatorMode"
Duration="0">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<ScrollingIndicatorMode>TouchIndicator</ScrollingIndicatorMode>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="MouseIndicator">
<Storyboard>
<FadeInThemeAnimation TargetName="ScrollBarSeparator" />
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="VerticalScrollBar"
Storyboard.TargetProperty="IndicatorMode"
Duration="0">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<ScrollingIndicatorMode>MouseIndicator</ScrollingIndicatorMode>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="HorizontalScrollBar"
Storyboard.TargetProperty="IndicatorMode"
Duration="0">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<ScrollingIndicatorMode>MouseIndicator</ScrollingIndicatorMode>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid Background="{TemplateBinding Background}">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<ScrollContentPresenter x:Name="ScrollContentPresenter"
Grid.RowSpan="2"
Grid.ColumnSpan="2"
ContentTemplate="{TemplateBinding ContentTemplate}"
Margin="{TemplateBinding Padding}" />
<ScrollBar x:Name="VerticalScrollBar" Style="{StaticResource customScrollBar}"
Grid.Column="1"
IsTabStop="False"
Maximum="{TemplateBinding ScrollableHeight}"
Orientation="Vertical"
Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}"
Value="{TemplateBinding VerticalOffset}"
ViewportSize="{TemplateBinding ViewportHeight}"
HorizontalAlignment="Right" />
<ScrollBar x:Name="HorizontalScrollBar"
IsTabStop="False"
Maximum="{TemplateBinding ScrollableWidth}"
Orientation="Horizontal"
Grid.Row="1"
Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}"
Value="{TemplateBinding HorizontalOffset}"
ViewportSize="{TemplateBinding ViewportWidth}" />
<Border x:Name="ScrollBarSeparator"
Grid.Row="1"
Grid.Column="1"
Background="{ThemeResource SystemControlPageBackgroundChromeLowBrush}" />
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
請注意我是如何在上面的ScrollViewer中添加“ customScrollBar”樣式的。
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