我有一个MultiDataTrigger,如果我的视图模型中的属性为true且TabItem上的IsMouseOver为true,则Border应显示为红色,厚度为2.5。
我无法同时使用属性和IsMouseOver,所以我只尝试了我的属性。这工作正常,但仍然有预期的问题,它将是2.5厚度的红色,直到我在标签上盘旋。所以我然后尝试取出我的视图模型属性,并将IsMouseOver检查作为一个条件。这不起作用。下面是仅包含IsMouseOver的代码。
<TabItem x:Name="TabItemNotWorking" Header="NotWorking">
<TabItem.Style>
<Style TargetType="TabItem">
<Style.Triggers>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding IsMouseOver RelativeSource={RelativeSource Self}}" Value="true" />
<!--<Condition Binding="{Binding Counter, Converter={StaticResource IntIsGreaterThanZeroToBool}}" Value="true" />-->
</MultiDataTrigger.Conditions>
<Setter Property="TabItem.BorderBrush" Value="Red"/>
<Setter Property="TabItem.BorderThickness" Value="2.5"/>
</MultiDataTrigger>
</Style.Triggers>
</Style>
</TabItem.Style>
<!--Content in here-->
</TabItem>
我使用Mike Strobel关于覆盖TabItem模板的建议修复了它。现在,只要我的ViewModel属性为true,我的红色边框就会显示,无论mouser是否悬停在TabItem上。 这是我的解决方案(我对我修改过的代码区域进行了评论):
<LinearGradientBrush x:Key="TabItemHotBackground"
StartPoint="0,0"
EndPoint="0,1">
<LinearGradientBrush.GradientStops>
<GradientStop Color="#EAF6FD"
Offset="0.15"/>
<GradientStop Color="#D9F0FC"
Offset=".5"/>
<GradientStop Color="#BEE6FD"
Offset=".5"/>
<GradientStop Color="#A7D9F5"
Offset="1"/>
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
<SolidColorBrush x:Key="TabItemSelectedBackground"
Color="#F9F9F9"/>
<SolidColorBrush x:Key="TabItemDisabledBackground"
Color="#F4F4F4"/>
<SolidColorBrush x:Key="TabItemHotBorderBrush"
Color="#3C7FB1"/>
<SolidColorBrush x:Key="TabItemDisabledBorderBrush"
Color="#FFC9C7BA"/>
<Style TargetType="{x:Type TabItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TabItem}">
<Grid SnapsToDevicePixels="true">
<Border Name="Bd"
Padding="{TemplateBinding Padding}"
BorderBrush="{TemplateBinding BorderBrush}"
Background="{TemplateBinding Background}"
BorderThickness="1,1,1,0">
<ContentPresenter Name="Content"
ContentSource="Header"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
HorizontalAlignment="{Binding Path=HorizontalContentAlignment,RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"
VerticalAlignment="{Binding Path=VerticalContentAlignment,RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"
RecognizesAccessKey="True"/>
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter TargetName="Bd" Property="Background" Value="{StaticResource TabItemHotBackground}"/>
</Trigger>
<Trigger Property="IsSelected" Value="true">
<Setter Property="Panel.ZIndex" Value="1"/>
<Setter TargetName="Bd" Property="Background" Value="{StaticResource TabItemSelectedBackground}"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected" Value="false"/>
<Condition Property="IsMouseOver" Value="true"/>
</MultiTrigger.Conditions>
<Setter TargetName="Bd" Property="BorderBrush" Value="{StaticResource TabItemHotBorderBrush}"/>
</MultiTrigger>
<!--HERE ARE THE START OF MY CHANGES-->
<DataTrigger Binding="{Binding Counter, Converter={StaticResource IntIsGreaterThanZeroToBool}}" Value="true">
<Setter TargetName="Bd" Property="BorderBrush" Value="Red"/>
<Setter TargetName="Bd" Property="BorderThickness" Value="2.5"/>
</DataTrigger>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding IsMouseOver, RelativeSource={RelativeSource AncestorType={x:Type TabItem}}}" Value="true" />
<Condition Binding="{Binding Counter, Converter={StaticResource IntIsGreaterThanZeroToBool}}" Value="true" />
</MultiDataTrigger.Conditions>
<Setter TargetName="Bd" Property="BorderBrush" Value="Red"/>
<Setter TargetName="Bd" Property="BorderThickness" Value="2.5"/>
</MultiDataTrigger>
<!--HERE ARE THE END OF MY CHANGES-->
<Trigger Property="TabStripPlacement" Value="Bottom">
<Setter TargetName="Bd" Property="BorderThickness" Value="1,0,1,1"/>
</Trigger>
<Trigger Property="TabStripPlacement" Value="Left">
<Setter TargetName="Bd" Property="BorderThickness" Value="1,1,0,1"/>
</Trigger>
<Trigger Property="TabStripPlacement" Value="Right">
<Setter TargetName="Bd" Property="BorderThickness" 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 TargetName="Content" Property="Margin" 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 TargetName="Content" Property="Margin" 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 TargetName="Content" Property="Margin" 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 TargetName="Content" Property="Margin" Value="1,0,0,0"/>
</MultiTrigger>
<Trigger Property="IsEnabled" Value="false">
<Setter TargetName="Bd" Property="Background" Value="{StaticResource TabItemDisabledBackground}"/>
<Setter TargetName="Bd" Property="BorderBrush" Value="{StaticResource TabItemDisabledBorderBrush}"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
答案 0 :(得分:1)
您会注意到以下条件有效,但仅在选中标签时才会起作用:
<Condition Binding="{Binding IsMouseOver RelativeSource={RelativeSource Self}}"
Value="true" />
原因如下:请注意Aero主题默认TabItem
模板的摘录。
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected"
Value="false"/>
<Condition Property="IsMouseOver"
Value="true"/>
</MultiTrigger.Conditions>
<Setter TargetName="Bd"
Property="BorderBrush"
Value="{StaticResource TabItemHotBorderBrush}"/>
</MultiTrigger>
当标签未被选中时,样式会覆盖鼠标悬停上的BorderBrush
,因此在这种情况下不会应用边框画笔。
由于setter使用StaticResource
来引用TabItemHotBorderBrush
,因此您无法使用自己的画笔覆盖此资源。您可能必须覆盖默认模板。