设置WPF TabControl非活动选项卡的背景颜色

Question

有没有一种简单的方法来设置WPF TabControl中所有非活动选项卡的背景画笔？我想在TabControl上模拟VS 2010的外观 - 控件的非活动选项卡的背景颜色应该与TabControl所在的窗口的背景颜色相匹配,这样您只能看到选项卡的文本,而不是标签本身.

我知道需要一个ControlTemplate才能做到; 我想弄清楚要放在控件模板中的内容.换句话说,如何指定特定画笔应该应用于所有非活动标签？谢谢你的帮助.

Answer 1

这是解决方案:正如斯蒂芬所说,向控件模板添加一个触发器.它实际上是一个属性触发器,只需要设置为非活动状态.所以我们设置IsSelected = false的触发器.我们将边框(Bd在a的默认控件模板中TabItem)作为目标TabItem,并将其设置Background为我们想要的颜色(我RelativeSource FindAncestor用来匹配放置标签的网格).然后我们将Bd's 设置BorderThickness为0,我们就完成了:

<Trigger Property="IsSelected" Value="false">
    <Setter Property="Background" TargetName="Bd" Value="{Binding Path=Background, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Grid}}}"/>
    <Setter Property="BorderThickness" TargetName="Bd" Value="0" />
</Trigger>

我将触发器放在默认模板中,就在IsSelected = true触发器的正下方.

请注意,触发器是硬编码的,以搜索Grid祖先作为非活动选项卡背景颜色(AncestorType={x:Type Grid})的来源.那是因为我将视图背景设置Grid为我用作布局根的视图背景.AncestorType如果使用其他布局根控件,或者在其他位置(例如<Window>标签中)设置视图背景颜色,则需要更改.

顺便说一句,您还可以使用IsSelected = true触发器来更改Background活动标签页眉从白色,以匹配TabControl背景颜色:

<Trigger Property="IsSelected" Value="true">
    <Setter Property="Panel.ZIndex" Value="1"/>
    <Setter Property="Background" TargetName="Bd" Value="{Binding Path=Background, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type TabControl}}}"/>
</Trigger>

对于那些喜欢这种视觉表示的人来说,这是完整的控制模板.它将自动应用于TabControl其范围内的任何内容.只需将此标记添加到XAML窗口的部分(或从a中导入ResourceDictionary),您TabControl将获得VS 2010外观.请记住更改FindAncestorproeprty,以便模板找到正确的背景颜色.

<!-- Styles for FS TabItem Control Template-->
<Style x:Key="TabItemFocusVisual">
    <Setter Property="Control.Template">
        <Setter.Value>
            <ControlTemplate>
                <Rectangle Stroke="Black" StrokeDashArray="1 2" StrokeThickness="1" Margin="3,3,3,1" SnapsToDevicePixels="true"/>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>
<SolidColorBrush x:Key="TabControlNormalBorderBrush" Color="#8C8E94"/>
<LinearGradientBrush x:Key="ButtonNormalBackground" EndPoint="0,1" StartPoint="0,0">
    <GradientStop Color="#F3F3F3" Offset="0"/>
    <GradientStop Color="#EBEBEB" Offset="0.5"/>
    <GradientStop Color="#DDDDDD" Offset="0.5"/>
    <GradientStop Color="#CDCDCD" Offset="1"/>
</LinearGradientBrush>
<LinearGradientBrush x:Key="TabItemHotBackground" EndPoint="0,1" StartPoint="0,0">
    <GradientStop Color="#EAF6FD" Offset="0.15"/>
    <GradientStop Color="#D9F0FC" Offset=".5"/>
    <GradientStop Color="#BEE6FD" Offset=".5"/>
    <GradientStop Color="#A7D9F5" Offset="1"/>
</LinearGradientBrush>
<SolidColorBrush x:Key="TabItemSelectedBackground" Color="#F9F9F9"/>
<SolidColorBrush x:Key="TabItemHotBorderBrush" Color="#3C7FB1"/>
<SolidColorBrush x:Key="TabItemDisabledBackground" Color="#F4F4F4"/>
<SolidColorBrush x:Key="TabItemDisabledBorderBrush" Color="#FFC9C7BA"/>

<!-- FS TabItem Control Template-->
<Style TargetType="{x:Type TabItem}">
    <Setter Property="FocusVisualStyle" Value="{StaticResource TabItemFocusVisual}"/>
    <Setter Property="Foreground" Value="Black"/>
    <Setter Property="Padding" Value="6,1,6,1"/>
    <Setter Property="BorderBrush" Value="{StaticResource TabControlNormalBorderBrush}"/>
    <Setter Property="Background" Value="{StaticResource ButtonNormalBackground}"/>
    <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
    <Setter Property="VerticalContentAlignment" Value="Stretch"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type TabItem}">
                <Grid SnapsToDevicePixels="true">
                    <Border x:Name="Bd" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="1,1,1,0" Padding="{TemplateBinding Padding}">
                        <ContentPresenter x:Name="Content" HorizontalAlignment="{Binding HorizontalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}" VerticalAlignment="{Binding VerticalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" ContentSource="Header" RecognizesAccessKey="True"/>
                    </Border>
                </Grid>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsMouseOver" Value="true">
                        <Setter Property="Background" TargetName="Bd" Value="{StaticResource TabItemHotBackground}"/>
                    </Trigger>
                    <Trigger Property="IsSelected" Value="true">
                        <Setter Property="Panel.ZIndex" Value="1"/>
                        <Setter Property="Background" TargetName="Bd" Value="{Binding Path=Background, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type TabControl}}}"/>
                    </Trigger>
                    <Trigger Property="IsSelected" Value="false">
                        <Setter Property="Background" TargetName="Bd" Value="{Binding Path=Background, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Grid}}}"/>
                        <Setter Property="BorderThickness" TargetName="Bd" Value="0" />
                    </Trigger>
                    <MultiTrigger>
                        <MultiTrigger.Conditions>
                            <Condition Property="IsSelected" Value="false"/>
                            <Condition Property="IsMouseOver" Value="true"/>
                        </MultiTrigger.Conditions>
                        <Setter Property="BorderBrush" TargetName="Bd" Value="{StaticResource TabItemHotBorderBrush}"/>
                    </MultiTrigger>
                    <Trigger Property="TabStripPlacement" Value="Bottom">
                        <Setter Property="BorderThickness" TargetName="Bd" Value="1,0,1,1"/>
                    </Trigger>
                    <Trigger Property="TabStripPlacement" Value="Left">
                        <Setter Property="BorderThickness" TargetName="Bd" Value="1,1,0,1"/>
                    </Trigger>
                    <Trigger Property="TabStripPlacement" Value="Right">
                        <Setter Property="BorderThickness" TargetName="Bd" Value="0,1,1,1"/>
                    </Trigger>
                    <MultiTrigger>
                        <MultiTrigger.Conditions>
                            <Condition Property="IsSelected" Value="true"/>
                            <Condition Property="TabStripPlacement" Value="Top"/>
                        </MultiTrigger.Conditions>
                        <Setter Property="Margin" Value="-2,-2,-2,-1"/>
                        <Setter Property="Margin" TargetName="Content" Value="0,0,0,1"/>
                    </MultiTrigger>
                    <MultiTrigger>
                        <MultiTrigger.Conditions>
                            <Condition Property="IsSelected" Value="true"/>
                            <Condition Property="TabStripPlacement" Value="Bottom"/>
                        </MultiTrigger.Conditions>
                        <Setter Property="Margin" Value="-2,-1,-2,-2"/>
                        <Setter Property="Margin" TargetName="Content" Value="0,1,0,0"/>
                    </MultiTrigger>
                    <MultiTrigger>
                        <MultiTrigger.Conditions>
                            <Condition Property="IsSelected" Value="true"/>
                            <Condition Property="TabStripPlacement" Value="Left"/>
                        </MultiTrigger.Conditions>
                        <Setter Property="Margin" Value="-2,-2,-1,-2"/>
                        <Setter Property="Margin" TargetName="Content" Value="0,0,1,0"/>
                    </MultiTrigger>
                    <MultiTrigger>
                        <MultiTrigger.Conditions>
                            <Condition Property="IsSelected" Value="true"/>
                            <Condition Property="TabStripPlacement" Value="Right"/>
                        </MultiTrigger.Conditions>
                        <Setter Property="Margin" Value="-1,-2,-2,-2"/>
                        <Setter Property="Margin" TargetName="Content" Value="1,0,0,0"/>
                    </MultiTrigger>
                    <Trigger Property="IsEnabled" Value="false">
                        <Setter Property="Background" TargetName="Bd" Value="{StaticResource TabItemDisabledBackground}"/>
                        <Setter Property="BorderBrush" TargetName="Bd" Value="{StaticResource TabItemDisabledBorderBrush}"/>
                        <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>