WPF-我可以在不使用模板的情况下在触发 IsMouseOver 时更改 MenuItem 和 SubMenuItem 的背景颜色吗?
WPF- Can I Change Background Color of MenuItem and SubMenuItem When IsMouseOver Triggered Without Using Template?
我想在不使用模板的情况下在触发 IsMouseOver 时更改 MenuItem 的背景颜色。
这会发生吗?
或者在 IsMouseOver 触发时使用 Template 改变 MenuItem 的背景颜色。
编辑:
我尝试按照 dhilmathy 的建议添加 ControlTemplate,现在我可以在触发 IsMouseOver 时更改 header 的背景,但是如何更改 MenuItem 的背景?菜单项现在消失了。
XAML 下面为:
<Menu Grid.Column="0" Background="#000d18" BorderBrush="#000d18" Cursor="Hand" Margin="28,0,0,0">
<MenuItem Header="Test1" Width="72" Height="42" Foreground="#d8d8d8" FontSize="16">
<MenuItem Header="Content1" Style="{StaticResource MenuItemStyle}"/>
<MenuItem Header="Content2" Style="{StaticResource MenuItemStyle}"/>
<MenuItem Header="Content3" Style="{StaticResource MenuItemStyle}"/>
<MenuItem Header="Content4" Style="{StaticResource MenuItemStyle}"/>
<MenuItem Header="Content5" Style="{StaticResource MenuItemStyle}"/>
<MenuItem Header="Content6" Style="{StaticResource MenuItemStyle}"/>
</MenuItem>
<MenuItem Header="Test2" Width="72" Height="42" Foreground="#d8d8d8" FontSize="16">
<MenuItem.Style>
<Style TargetType="MenuItem">
<Style.Setters>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type MenuItem}">
<Border Width="72" Height="42" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
<ContentPresenter x:Name="ContentPresenter" Content="{TemplateBinding Header}" ContentSource="Header" Margin="{TemplateBinding Padding}" VerticalAlignment="Center"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="#1271C8"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style.Setters>
</Style>
</MenuItem.Style>
<MenuItem Header="Content1" Style="{StaticResource MenuItemStyle}"/>
<MenuItem Header="Content2" Style="{StaticResource MenuItemStyle}"/>
<MenuItem Header="Content3" Style="{StaticResource MenuItemStyle}"/>
</MenuItem>
<MenuItem Header="Test3" Width="72" Height="42" Foreground="#d8d8d8" FontSize="16"></MenuItem>
</Menu>
菜单项样式:
<Style x:Key="MenuItemStyle" TargetType="{x:Type MenuItem}">
<Setter Property="Foreground" Value="#d8d8d8"/>
<Setter Property="Background" Value="#414141"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="BorderBrush" Value="#414141"/>
<Setter Property="Cursor" Value="Hand"/>
<Setter Property="FontSize" Value="16"/>
<Setter Property="FontFamily" Value="Arial"/>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Foreground" Value="#011627"/>
<!--<Setter Property="Background" Value="#1271C8"/>-->
</Trigger>
</Style.Triggers>
</Style>
您需要修改 MenuItem
的默认值 ControlTemplate
才能实现此目的。您可以从 Visual Studio,
创建现有 Template
的副本
默认模板:
<ControlTemplate x:Key="MenuItemControlTemplate1" TargetType="{x:Type MenuItem}">
<Border x:Name="templateRoot" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
<Grid Margin="-1">
<Grid.ColumnDefinitions>
<ColumnDefinition MinWidth="22" SharedSizeGroup="MenuItemIconColumnGroup" Width="Auto"/>
<ColumnDefinition Width="13"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="30"/>
<ColumnDefinition SharedSizeGroup="MenuItemIGTColumnGroup" Width="Auto"/>
<ColumnDefinition Width="20"/>
</Grid.ColumnDefinitions>
<ContentPresenter x:Name="Icon" Content="{TemplateBinding Icon}" ContentSource="Icon" HorizontalAlignment="Center" Height="16" Margin="3" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center" Width="16"/>
<Border x:Name="GlyphPanel" BorderBrush="#FF26A0DA" BorderThickness="1" Background="#3D26A0DA" ClipToBounds="False" HorizontalAlignment="Center" Height="22" Margin="-1,0,0,0" Visibility="Hidden" VerticalAlignment="Center" Width="22">
<Path x:Name="Glyph" Data="F1M10,1.2L4.7,9.1 4.5,9.1 0,5.2 1.3,3.5 4.3,6.1 8.3,0 10,1.2z" Fill="#FF212121" FlowDirection="LeftToRight" Height="11" Width="10"/>
</Border>
<ContentPresenter x:Name="menuHeaderContainer" ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}" Grid.Column="2" ContentStringFormat="{TemplateBinding HeaderStringFormat}" ContentSource="Header" HorizontalAlignment="Left" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center"/>
<TextBlock x:Name="menuGestureText" Grid.Column="4" Margin="{TemplateBinding Padding}" Opacity="0.7" Text="{TemplateBinding InputGestureText}" VerticalAlignment="Center"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="Icon" Value="{x:Null}">
<Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
</Trigger>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Visibility" TargetName="GlyphPanel" Value="Visible"/>
<Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
</Trigger>
<Trigger Property="IsHighlighted" Value="True">
<Setter Property="Background" TargetName="templateRoot" Value="#3D26A0DA"/>
<Setter Property="BorderBrush" TargetName="templateRoot" Value="#FF26A0DA"/>
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="TextElement.Foreground" TargetName="templateRoot" Value="#FF707070"/>
<Setter Property="Fill" TargetName="Glyph" Value="#FF707070"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsHighlighted" Value="True"/>
<Condition Property="IsEnabled" Value="False"/>
</MultiTrigger.Conditions>
<Setter Property="Background" TargetName="templateRoot" Value="#0A000000"/>
<Setter Property="BorderBrush" TargetName="templateRoot" Value="#21000000"/>
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
您需要编辑 IsHighlighted
Trigger
以满足您的要求。
我的问题已经解决了
要更改 MenuItem 的背景,必须使用模板。
MenuItem 样式如下:
<Style x:Key="TopLevelHeaderStyle" TargetType="{x:Type MenuItem}">
<Setter Property="Background" Value="#000d18"/>
<Setter Property="Foreground" Value="#d8d8d8"/>
<Setter Property="Width" Value="72"/>
<Setter Property="Height" Value="42"/>
<Setter Property="FontSize" Value="16"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type MenuItem}">
<Border x:Name="MenuItemBorder" Width="72" Height="42" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
<Grid VerticalAlignment="Center">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<ContentPresenter Content="{TemplateBinding Header}" ContentSource="Header" Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
<Popup AllowsTransparency="True" IsOpen="{Binding IsSubmenuOpen, RelativeSource={RelativeSource TemplatedParent}}" Placement="Bottom" PlacementTarget="{Binding ElementName=MenuItemBorder}"
HorizontalOffset="1" VerticalOffset="-1">
<Border BorderBrush="#414141" Background="#414141">
<ScrollViewer Style="{DynamicResource {ComponentResourceKey ResourceId=MenuScrollViewer, TypeInTargetAssembly={x:Type FrameworkElement}}}">
<ItemsPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</ScrollViewer>
</Border>
</Popup>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsHighlighted" Value="True">
<Setter Property="Background" Value="#1271C8"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
设置Template修改原来的模板,使用ContentPresenter显示内容,使用Popup显示SubMenuItem,其ItemsPresenter可以显示subMenuItem内容。调整Popup的样式达到预期。
此外,Trigger IsHighlighted可以改变MenuItem的背景,直到点击其他位置。
SubMenuItem的样式可以使用其他自定义样式来改变。
新样式:
我想在不使用模板的情况下在触发 IsMouseOver 时更改 MenuItem 的背景颜色。
这会发生吗?
或者在 IsMouseOver 触发时使用 Template 改变 MenuItem 的背景颜色。
编辑:
我尝试按照 dhilmathy 的建议添加 ControlTemplate,现在我可以在触发 IsMouseOver 时更改 header 的背景,但是如何更改 MenuItem 的背景?菜单项现在消失了。
XAML 下面为:
<Menu Grid.Column="0" Background="#000d18" BorderBrush="#000d18" Cursor="Hand" Margin="28,0,0,0">
<MenuItem Header="Test1" Width="72" Height="42" Foreground="#d8d8d8" FontSize="16">
<MenuItem Header="Content1" Style="{StaticResource MenuItemStyle}"/>
<MenuItem Header="Content2" Style="{StaticResource MenuItemStyle}"/>
<MenuItem Header="Content3" Style="{StaticResource MenuItemStyle}"/>
<MenuItem Header="Content4" Style="{StaticResource MenuItemStyle}"/>
<MenuItem Header="Content5" Style="{StaticResource MenuItemStyle}"/>
<MenuItem Header="Content6" Style="{StaticResource MenuItemStyle}"/>
</MenuItem>
<MenuItem Header="Test2" Width="72" Height="42" Foreground="#d8d8d8" FontSize="16">
<MenuItem.Style>
<Style TargetType="MenuItem">
<Style.Setters>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type MenuItem}">
<Border Width="72" Height="42" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
<ContentPresenter x:Name="ContentPresenter" Content="{TemplateBinding Header}" ContentSource="Header" Margin="{TemplateBinding Padding}" VerticalAlignment="Center"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="#1271C8"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style.Setters>
</Style>
</MenuItem.Style>
<MenuItem Header="Content1" Style="{StaticResource MenuItemStyle}"/>
<MenuItem Header="Content2" Style="{StaticResource MenuItemStyle}"/>
<MenuItem Header="Content3" Style="{StaticResource MenuItemStyle}"/>
</MenuItem>
<MenuItem Header="Test3" Width="72" Height="42" Foreground="#d8d8d8" FontSize="16"></MenuItem>
</Menu>
菜单项样式:
<Style x:Key="MenuItemStyle" TargetType="{x:Type MenuItem}">
<Setter Property="Foreground" Value="#d8d8d8"/>
<Setter Property="Background" Value="#414141"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="BorderBrush" Value="#414141"/>
<Setter Property="Cursor" Value="Hand"/>
<Setter Property="FontSize" Value="16"/>
<Setter Property="FontFamily" Value="Arial"/>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Foreground" Value="#011627"/>
<!--<Setter Property="Background" Value="#1271C8"/>-->
</Trigger>
</Style.Triggers>
</Style>
您需要修改 MenuItem
的默认值 ControlTemplate
才能实现此目的。您可以从 Visual Studio,
Template
的副本
默认模板:
<ControlTemplate x:Key="MenuItemControlTemplate1" TargetType="{x:Type MenuItem}">
<Border x:Name="templateRoot" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
<Grid Margin="-1">
<Grid.ColumnDefinitions>
<ColumnDefinition MinWidth="22" SharedSizeGroup="MenuItemIconColumnGroup" Width="Auto"/>
<ColumnDefinition Width="13"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="30"/>
<ColumnDefinition SharedSizeGroup="MenuItemIGTColumnGroup" Width="Auto"/>
<ColumnDefinition Width="20"/>
</Grid.ColumnDefinitions>
<ContentPresenter x:Name="Icon" Content="{TemplateBinding Icon}" ContentSource="Icon" HorizontalAlignment="Center" Height="16" Margin="3" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center" Width="16"/>
<Border x:Name="GlyphPanel" BorderBrush="#FF26A0DA" BorderThickness="1" Background="#3D26A0DA" ClipToBounds="False" HorizontalAlignment="Center" Height="22" Margin="-1,0,0,0" Visibility="Hidden" VerticalAlignment="Center" Width="22">
<Path x:Name="Glyph" Data="F1M10,1.2L4.7,9.1 4.5,9.1 0,5.2 1.3,3.5 4.3,6.1 8.3,0 10,1.2z" Fill="#FF212121" FlowDirection="LeftToRight" Height="11" Width="10"/>
</Border>
<ContentPresenter x:Name="menuHeaderContainer" ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}" Grid.Column="2" ContentStringFormat="{TemplateBinding HeaderStringFormat}" ContentSource="Header" HorizontalAlignment="Left" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center"/>
<TextBlock x:Name="menuGestureText" Grid.Column="4" Margin="{TemplateBinding Padding}" Opacity="0.7" Text="{TemplateBinding InputGestureText}" VerticalAlignment="Center"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="Icon" Value="{x:Null}">
<Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
</Trigger>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Visibility" TargetName="GlyphPanel" Value="Visible"/>
<Setter Property="Visibility" TargetName="Icon" Value="Collapsed"/>
</Trigger>
<Trigger Property="IsHighlighted" Value="True">
<Setter Property="Background" TargetName="templateRoot" Value="#3D26A0DA"/>
<Setter Property="BorderBrush" TargetName="templateRoot" Value="#FF26A0DA"/>
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="TextElement.Foreground" TargetName="templateRoot" Value="#FF707070"/>
<Setter Property="Fill" TargetName="Glyph" Value="#FF707070"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsHighlighted" Value="True"/>
<Condition Property="IsEnabled" Value="False"/>
</MultiTrigger.Conditions>
<Setter Property="Background" TargetName="templateRoot" Value="#0A000000"/>
<Setter Property="BorderBrush" TargetName="templateRoot" Value="#21000000"/>
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
您需要编辑 IsHighlighted
Trigger
以满足您的要求。
我的问题已经解决了
要更改 MenuItem 的背景,必须使用模板。
MenuItem 样式如下:
<Style x:Key="TopLevelHeaderStyle" TargetType="{x:Type MenuItem}">
<Setter Property="Background" Value="#000d18"/>
<Setter Property="Foreground" Value="#d8d8d8"/>
<Setter Property="Width" Value="72"/>
<Setter Property="Height" Value="42"/>
<Setter Property="FontSize" Value="16"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type MenuItem}">
<Border x:Name="MenuItemBorder" Width="72" Height="42" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
<Grid VerticalAlignment="Center">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<ContentPresenter Content="{TemplateBinding Header}" ContentSource="Header" Margin="{TemplateBinding Padding}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
<Popup AllowsTransparency="True" IsOpen="{Binding IsSubmenuOpen, RelativeSource={RelativeSource TemplatedParent}}" Placement="Bottom" PlacementTarget="{Binding ElementName=MenuItemBorder}"
HorizontalOffset="1" VerticalOffset="-1">
<Border BorderBrush="#414141" Background="#414141">
<ScrollViewer Style="{DynamicResource {ComponentResourceKey ResourceId=MenuScrollViewer, TypeInTargetAssembly={x:Type FrameworkElement}}}">
<ItemsPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</ScrollViewer>
</Border>
</Popup>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsHighlighted" Value="True">
<Setter Property="Background" Value="#1271C8"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
设置Template修改原来的模板,使用ContentPresenter显示内容,使用Popup显示SubMenuItem,其ItemsPresenter可以显示subMenuItem内容。调整Popup的样式达到预期。
此外,Trigger IsHighlighted可以改变MenuItem的背景,直到点击其他位置。
SubMenuItem的样式可以使用其他自定义样式来改变。
新样式: