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我正在尝试覆盖 Pivot 标题前景主题画笔，但无论我做什么，UWP 应用程序都会忽略它。

需要明确的是，这个问题是关于 UWP Pivot 控件的，而不是关于 Win（Phone）8.1 的问题。我在 8.1 应用程序中使用了主题画笔覆盖方法，并且效果很好。但我似乎无法为 UWP Pivot 做同样的事情。

我在 generic.xaml 中查找了相应的画笔（以及在画笔 -> 系统画笔资源下的属性窗格中），它们是 UWP 应用程序中的 PivotHeaderForegroundSelectedBrush 和 PivotHeaderForegroundUnselectedBrush，并将它们添加到我在 app.xaml 中的资源字典中，但与其他系统画笔，由于某种原因，枢轴画笔没有被覆盖。

<SolidColorBrush x:Key="SystemControlForegroundAccentBrush" Color="Gray"/>
<SolidColorBrush x:Key="SystemControlBackgroundAccentBrush" Color="Gray"/>
<SolidColorBrush x:Key="SystemColorControlAccentBrush" Color="Gray"/>
<SolidColorBrush x:Key="PivotHeaderForegroundSelectedBrush" Color="Green" />
<SolidColorBrush x:Key="PivotHeaderForegroundUnselectedBrush" Color="Red"/>

我知道更改标题前景色的其他方法，但这可能涉及转换器或额外的代码，如果我能以干净的方式做到这一点，我宁愿不使用它。我尝试编辑默认的 Pivot 样式，但我看不到任何可以为默认 Pivot 样式中的标题项添加/编辑 Foreground 属性的地方。

提前致谢！:)

4

2 回答 2

31

有趣的是，控件的Foreground属性控制的是内容的PivotItemStyle前景色，而不是它的标题。并且没有办法修改样式中标题的颜色。PivotItem

你或许可以找到对应的颜色资源，修改一下来达到你想要的效果，但是这里有一种更灵活更纯粹的xaml方式——

该Pivot控件实际上有一个HeaderTemplate允许您完全自定义您的PivotItem 标题。请参阅以下代码示例，所有标题都应具有青色。 

<Grid>
    <Pivot Title="Pivot">
        <Pivot.HeaderTemplate>
            <DataTemplate>
                <Grid>
                    <TextBlock Text="{Binding}" Foreground="Teal" />
                </Grid>
            </DataTemplate>
        </Pivot.HeaderTemplate>

        <PivotItem Header="My first header">
            <Grid/>
        </PivotItem>
    </Pivot>
</Grid>

更新

所以这里有一个更好的方法。

我在Visual Studio中使用了新的Live Visual Tree工具来帮助定位实际的标题元素。这是一个名为. 事实证明，所有样式都在此控件中定义。PivotHeaderItem

然后我不得不去msdn并抓住这个控件的完整样式（Blend 不起作用）。

正如您在样式中看到的那样，该控件具有默认Foreground的{ThemeResource SystemControlForegroundBaseMediumBrush}和视觉状态，当状态变为时，这Foreground将更改为。我已将它们更改为并使它们更明显。{ThemeResource SystemControlHighlightAltBaseHighBrush}SelectedRedGreen

<Style TargetType="PivotHeaderItem">
    <Setter Property="FontSize" Value="{ThemeResource PivotHeaderItemFontSize}" />
    <Setter Property="FontFamily" Value="{ThemeResource PivotHeaderItemFontFamily}" />
    <Setter Property="FontWeight" Value="{ThemeResource PivotHeaderItemThemeFontWeight}" />
    <Setter Property="CharacterSpacing" Value="{ThemeResource PivotHeaderItemCharacterSpacing}" />
    <Setter Property="Background" Value="Transparent" />
    <Setter Property="Foreground" Value="Red" /> <!-- original value {ThemeResource SystemControlForegroundBaseMediumBrush} -->
    <Setter Property="Padding" Value="{ThemeResource PivotHeaderItemMargin}" />
    <Setter Property="Height" Value="48" />
    <Setter Property="VerticalContentAlignment" Value="Center" />
    <Setter Property="IsTabStop" Value="False" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="PivotHeaderItem">
                <Grid x:Name="Grid" Background="{TemplateBinding Background}">
                    <Grid.Resources>
                        <Style x:Key="BaseContentPresenterStyle" TargetType="ContentPresenter">
                            <Setter Property="FontFamily" Value="Segoe UI" />
                            <Setter Property="FontWeight" Value="SemiBold" />
                            <Setter Property="FontSize" Value="15" />
                            <Setter Property="TextWrapping" Value="Wrap" />
                            <Setter Property="LineStackingStrategy" Value="MaxHeight" />
                            <Setter Property="TextLineBounds" Value="Full" />
                            <Setter Property="OpticalMarginAlignment" Value="TrimSideBearings" />
                        </Style>
                        <Style x:Key="BodyContentPresenterStyle" TargetType="ContentPresenter" BasedOn="{StaticResource BaseContentPresenterStyle}">
                            <Setter Property="FontFamily" Value="{ThemeResource PivotHeaderItemFontFamily}" />
                            <Setter Property="FontWeight" Value="{ThemeResource PivotHeaderItemThemeFontWeight}" />
                            <Setter Property="FontSize" Value="{ThemeResource PivotHeaderItemFontSize}" />
                        </Style>
                    </Grid.Resources>
                    <VisualStateManager.VisualStateGroups>
                        <VisualStateGroup x:Name="SelectionStates">
                            <VisualStateGroup.Transitions>
                                <VisualTransition From="Unselected" To="UnselectedLocked" GeneratedDuration="0:0:0.33" />
                                <VisualTransition From="UnselectedLocked" To="Unselected" GeneratedDuration="0:0:0.33" />
                            </VisualStateGroup.Transitions>
                            <VisualState x:Name="Disabled">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlDisabledBaseMediumLowBrush}" />
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="Unselected" />
                            <VisualState x:Name="UnselectedLocked">
                                <Storyboard>
                                    <DoubleAnimation Storyboard.TargetName="ContentPresenterTranslateTransform" Storyboard.TargetProperty="X" Duration="0" To="{ThemeResource PivotHeaderItemLockedTranslation}" />
                                    <DoubleAnimation Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="(UIElement.Opacity)" Duration="0" To="0" />
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="Selected">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="Green" /> <!-- original value {ThemeResource SystemControlHighlightAltBaseHighBrush} -->
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Grid" Storyboard.TargetProperty="Background">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightTransparentBrush}" />
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="UnselectedPointerOver">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltBaseMediumHighBrush}" />
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Grid" Storyboard.TargetProperty="Background">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightTransparentBrush}" />
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="SelectedPointerOver">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltBaseMediumHighBrush}" />
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Grid" Storyboard.TargetProperty="Background">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightTransparentBrush}" />
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="UnselectedPressed">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltBaseMediumHighBrush}" />
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Grid" Storyboard.TargetProperty="Background">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightTransparentBrush}" />
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                            <VisualState x:Name="SelectedPressed">
                                <Storyboard>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ContentPresenter" Storyboard.TargetProperty="Foreground">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightAltBaseMediumHighBrush}" />
                                    </ObjectAnimationUsingKeyFrames>
                                    <ObjectAnimationUsingKeyFrames Storyboard.TargetName="Grid" Storyboard.TargetProperty="Background">
                                        <DiscreteObjectKeyFrame KeyTime="0" Value="{ThemeResource SystemControlHighlightTransparentBrush}" />
                                    </ObjectAnimationUsingKeyFrames>
                                </Storyboard>
                            </VisualState>
                        </VisualStateGroup>
                    </VisualStateManager.VisualStateGroups>
                    <ContentPresenter x:Name="ContentPresenter" Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}" Margin="{TemplateBinding Padding}" FontSize="{TemplateBinding FontSize}" FontFamily="{TemplateBinding FontFamily}" FontWeight="{TemplateBinding FontWeight}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}">
                        <ContentPresenter.RenderTransform>
                            <TranslateTransform x:Name="ContentPresenterTranslateTransform" />
                        </ContentPresenter.RenderTransform>
                    </ContentPresenter>
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

有了这个，您现在应该能够完全自定义您的数据透视表头！:)

于 2015-08-04T01:07:05.790 回答
1

您还可以将每个数据透视项目的标题设置为自己独特的颜色

<Pivot>
    <PivotItem>
        <PivotItem.Header>
            <PivotItemHeader Content="Header 1" Foreground="Magenta"/>
        </PivotItem.Header>
        <Grid>
            <!-- pivot item content here -->
        </Grid>
    </PivotItem>
    <PivotItem>
        <PivotItem.Header>
            <PivotItemHeader Content="Header 2" Foreground="Cyan"/>
        </PivotItem.Header>
        <Grid>
            <!-- pivot item content here -->
        </Grid>
    </PivotItem>
</Pivot>
于 2019-06-13T12:48:01.603 回答