WPF TreeView:如何像在资源管理器中那样使用圆角设置选定项目的样式

WPF TreeView:如何像在资源管理器中那样使用圆角设置选定项目的样式,wpf,xaml,treeview,styles,selecteditem,Wpf,Xaml,Treeview,Styles,Selecteditem,WPF树状视图中的选定项具有带“锐角”的深蓝色背景。今天看起来有点过时了: 我想将背景更改为Windows 7的资源管理器中的样子(带/不带焦点): 到目前为止,我所尝试的并没有移除原始的深蓝色背景,而是在其顶部绘制了一个圆形边框,这样您就可以看到边缘和左侧的深蓝色-难看 有趣的是,当我的版本没有焦点时,它看起来很正常: 我不想像这里或那样重新定义控件模板。我想设置所需的最小属性,以使所选项目看起来像资源管理器中的项目 备选方案:我也很乐意让聚焦的选定项目看起来像我现在没有聚焦的项目。失

WPF树状视图中的选定项具有带“锐角”的深蓝色背景。今天看起来有点过时了:

我想将背景更改为Windows 7的资源管理器中的样子(带/不带焦点):

到目前为止,我所尝试的并没有移除原始的深蓝色背景,而是在其顶部绘制了一个圆形边框,这样您就可以看到边缘和左侧的深蓝色-难看

有趣的是,当我的版本没有焦点时,它看起来很正常:

我不想像这里或那样重新定义控件模板。我想设置所需的最小属性,以使所选项目看起来像资源管理器中的项目

备选方案:我也很乐意让聚焦的选定项目看起来像我现在没有聚焦的项目。失去焦点时,颜色应从蓝色变为灰色

这是我的密码:

<TreeView 
    x:Name="TreeView"
    ItemsSource="{Binding TopLevelNodes}" 
    VirtualizingStackPanel.IsVirtualizing="True"
    VirtualizingStackPanel.VirtualizationMode="Recycling">

    <TreeView.ItemContainerStyle>
        <Style TargetType="{x:Type TreeViewItem}">
            <Setter Property="IsExpanded" Value="{Binding IsExpanded, Mode=TwoWay}" />
            <Setter Property="IsSelected" Value="{Binding IsSelected, Mode=TwoWay}" />

            <Style.Triggers>
                <Trigger Property="IsSelected" Value="True">
                    <Setter Property="BorderBrush" Value="#FF7DA2CE" />
                    <Setter Property="Background" Value="#FFCCE2FC" />
                </Trigger>
            </Style.Triggers>
        </Style>
    </TreeView.ItemContainerStyle>

    <TreeView.Resources>
        <HierarchicalDataTemplate DataType="{x:Type viewmodels:ObjectBaseViewModel}" ItemsSource="{Binding Children}">
            <Border Name="ItemBorder" CornerRadius="2" Background="{Binding Background, RelativeSource={RelativeSource AncestorType=TreeViewItem}}"
                      BorderBrush="{Binding BorderBrush, RelativeSource={RelativeSource AncestorType=TreeViewItem}}" BorderThickness="1">
                <StackPanel Orientation="Horizontal" Margin="2">
                    <Image Name="icon" Source="/ExplorerTreeView/Images/folder.png"/>
                    <TextBlock Text="{Binding Name}"/>
                </StackPanel>
            </Border>
        </HierarchicalDataTemplate>
    </TreeView.Resources>
</TreeView>


解决方案 在Sheridan和Meleak的出色回答下,我的TreeView现在在代码中看起来是这样的(这是一个我非常满意的结果,非常接近Explorer的风格):


将其添加到
树视图.ContainerStyle
中,以删除默认的
蓝色背景

<Style.Resources>
    <SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="Transparent" />
    <SolidColorBrush x:Key="{x:Static SystemColors.ControlBrushKey}" Color="Transparent" />
    <SolidColorBrush x:Key="{x:Static SystemColors.HighlightTextBrushKey}" Color="Black" />
    <SolidColorBrush x:Key="{x:Static SystemColors.ControlTextBrushKey}" Color="Black" />
</Style.Resources>

请注意,这仅在
ColorAnimation
具有
From
颜色时才起作用。当这段代码运行时,运行库将在
Border.Background
属性上查找
SolidColorBrush
集,因此必须设置一个。您可以直接从
属性设置
彩色动画。

添加到@Sheridan的答案
这不是100%的准确率,但应该可以让您非常接近(它使用的是非常接近Windows资源管理器的
GridView
中的颜色)


Windows 10树视图(和列表视图)样式 我最初正在寻找一种将Windows10颜色方案应用于TreeView项目的方法,包括

  • IsMouseOver仅适用于当前项目
  • WPF已将其应用于列表框的Windows 10颜色(非Windows资源管理器)

如果你们中的任何人正在寻找这一点,请随时采取下面的代码。我使用Helge Klein的解决方案解决IsMouseOver问题,并将Windows 10颜色应用于XAML。因此,我建议将此作为已接受答案的补充

另外,有关
列表视图
组合框
的单词,请参见下文


屏幕截图

App.xaml

<Style TargetType="{x:Type TreeView}">
    <Style.Resources>
        <SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="#CBE8F6" />
        <SolidColorBrush x:Key="{x:Static SystemColors.InactiveSelectionHighlightBrushKey}" Color="#F6F6F6" />
        <SolidColorBrush x:Key="{x:Static SystemColors.HighlightTextBrushKey}" Color="Black" />
        <SolidColorBrush x:Key="{x:Static SystemColors.ControlTextBrushKey}" Color="Black" />
    </Style.Resources>
</Style>
<Style TargetType="{x:Type TreeViewItem}">
    <Setter Property="BorderThickness" Value="1" />
    <Style.Triggers>
        <Trigger Property="IsSelected" Value="True">
            <Setter Property="BorderBrush" Value="#26A0DA" />
        </Trigger>
        <MultiTrigger>
            <MultiTrigger.Conditions>
                <Condition Property="local:TreeViewItemHelper.IsMouseDirectlyOverItem" Value="True" />
                <Condition Property="IsSelected" Value="False" />
            </MultiTrigger.Conditions>
            <Setter Property="Background" Value="#E5F3FB" />
            <Setter Property="BorderBrush" Value="#70C0E7" />
        </MultiTrigger>
        <MultiTrigger>
            <MultiTrigger.Conditions>
                <Condition Property="IsSelected" Value="True" />
                <Condition Property="IsSelectionActive" Value="False" />
            </MultiTrigger.Conditions>
            <Setter Property="BorderBrush" Value="#DADADA" />
        </MultiTrigger>
    </Style.Triggers>
</Style>
ListBox/ListView和ComboBox:在Windows 7(和8?)中,这将导致从TreeView到ListBox/ListView和ComboBox的设计有所不同。因此,如果要将此颜色方案也应用于这些控件类型,请使用以下选项:

<Style TargetType="{x:Type ListBoxItem}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type ListBoxItem}">
                <Border Name="Border" BorderThickness="1" Background="Transparent">
                    <ContentPresenter />
                </Border>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsMouseOver" Value="True">
                        <Setter TargetName="Border" Property="Background" Value="#E5F3FB" />
                        <Setter TargetName="Border" Property="BorderBrush" Value="#70C0E7" />
                    </Trigger>
                    <Trigger Property="IsSelected" Value="True">
                        <Setter TargetName="Border" Property="Background" Value="#CBE8F6" />
                        <Setter TargetName="Border" Property="BorderBrush" Value="#26A0DA" />
                    </Trigger>
                    <MultiTrigger>
                        <MultiTrigger.Conditions>
                            <Condition Property="IsSelected" Value="True" />
                            <Condition Property="Selector.IsSelectionActive" Value="False" />
                        </MultiTrigger.Conditions>
                        <Setter TargetName="Border" Property="Background" Value="#F6F6F6" />
                        <Setter TargetName="Border" Property="BorderBrush" Value="#DADADA" />
                    </MultiTrigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>
<Style TargetType="{x:Type ListViewItem}" BasedOn="{StaticResource {x:Type ListBoxItem}}" />
<Style TargetType="{x:Type ComboBoxItem}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type ComboBoxItem}">
                <Border Name="Border" BorderThickness="1" Padding="1" Background="Transparent">
                    <ContentPresenter />
                </Border>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsMouseOver" Value="True">
                        <Setter TargetName="Border" Property="Background" Value="#E5F3FB" />
                        <Setter TargetName="Border" Property="BorderBrush" Value="#70C0E7" />
                    </Trigger>
                    <Trigger Property="IsSelected" Value="True">
                        <Setter TargetName="Border" Property="Background" Value="#CBE8F6" />
                        <Setter TargetName="Border" Property="BorderBrush" Value="#26A0DA" />
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>


太棒了!它会删除难看的深蓝色背景,并将文本颜色设置为黑色。您是否也有一个技巧,当焦点移动到另一个元素或窗口时,如何将背景颜色从蓝色更改为灰色,如上面我的屏幕截图所示?谢谢您的添加。您是否知道有一个示例显示了类似的内容(使用EventTriggers在样式之间切换)?是否要对其进行注释?不加评论的否决投票是毫无意义的。你能展示TreeView_IsmouseDirectlyVeritem.IsmouseDirectlyVeritem的代码吗?谢谢-我问了一会儿才发现这一点-
<TreeView ...>
    <TreeView.Resources>
        <LinearGradientBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" EndPoint="0,1" StartPoint="0,0">
            <GradientStop Color="#FFD9F4FF" Offset="0"/>
            <GradientStop Color="#FF9BDDFB" Offset="1"/>
        </LinearGradientBrush>
        <LinearGradientBrush x:Key="{x:Static SystemColors.ControlBrushKey}" EndPoint="0,1" StartPoint="0,0">
            <GradientStop Color="#FFEEEDED" Offset="0"/>
            <GradientStop Color="#FFDDDDDD" Offset="1"/>
        </LinearGradientBrush>
        <SolidColorBrush x:Key="{x:Static SystemColors.HighlightTextBrushKey}" Color="Black" />
        <SolidColorBrush x:Key="{x:Static SystemColors.ControlTextBrushKey}" Color="Black" />
    </TreeView.Resources>
    <TreeView.ItemContainerStyle>
        <Style TargetType="{x:Type TreeViewItem}">
            <Setter Property="BorderThickness" Value="1.5"/>
            <Style.Triggers>
                <Trigger Property="IsSelected" Value="True">
                    <Setter Property="BorderBrush" Value="#adc6e5"/>
                </Trigger>
                <MultiTrigger>
                    <MultiTrigger.Conditions>
                        <Condition Property="IsSelected" Value="True"/>
                        <Condition Property="IsSelectionActive" Value="False"/>
                    </MultiTrigger.Conditions>
                    <Setter Property="BorderBrush" Value="LightGray"/>
                </MultiTrigger>
            </Style.Triggers>
            <Style.Resources>
                <Style TargetType="Border">
                    <Setter Property="CornerRadius" Value="2"/>
                </Style>
            </Style.Resources>                    
        </Style>
    </TreeView.ItemContainerStyle>
</TreeView>
<Style TargetType="{x:Type TreeView}">
    <Style.Resources>
        <SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="#CBE8F6" />
        <SolidColorBrush x:Key="{x:Static SystemColors.InactiveSelectionHighlightBrushKey}" Color="#F6F6F6" />
        <SolidColorBrush x:Key="{x:Static SystemColors.HighlightTextBrushKey}" Color="Black" />
        <SolidColorBrush x:Key="{x:Static SystemColors.ControlTextBrushKey}" Color="Black" />
    </Style.Resources>
</Style>
<Style TargetType="{x:Type TreeViewItem}">
    <Setter Property="BorderThickness" Value="1" />
    <Style.Triggers>
        <Trigger Property="IsSelected" Value="True">
            <Setter Property="BorderBrush" Value="#26A0DA" />
        </Trigger>
        <MultiTrigger>
            <MultiTrigger.Conditions>
                <Condition Property="local:TreeViewItemHelper.IsMouseDirectlyOverItem" Value="True" />
                <Condition Property="IsSelected" Value="False" />
            </MultiTrigger.Conditions>
            <Setter Property="Background" Value="#E5F3FB" />
            <Setter Property="BorderBrush" Value="#70C0E7" />
        </MultiTrigger>
        <MultiTrigger>
            <MultiTrigger.Conditions>
                <Condition Property="IsSelected" Value="True" />
                <Condition Property="IsSelectionActive" Value="False" />
            </MultiTrigger.Conditions>
            <Setter Property="BorderBrush" Value="#DADADA" />
        </MultiTrigger>
    </Style.Triggers>
</Style>
public static class TreeViewItemHelper
{
    private static TreeViewItem CurrentItem;
    private static readonly RoutedEvent UpdateOverItemEvent = EventManager.RegisterRoutedEvent("UpdateOverItem", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(TreeViewItemHelper));
    private static readonly DependencyPropertyKey IsMouseDirectlyOverItemKey = DependencyProperty.RegisterAttachedReadOnly("IsMouseDirectlyOverItem", typeof(bool), typeof(TreeViewItemHelper), new FrameworkPropertyMetadata(null, new CoerceValueCallback(CalculateIsMouseDirectlyOverItem)));
    public static readonly DependencyProperty IsMouseDirectlyOverItemProperty = IsMouseDirectlyOverItemKey.DependencyProperty;

    static TreeViewItemHelper()
    {
        EventManager.RegisterClassHandler(typeof(TreeViewItem), UIElement.MouseEnterEvent, new MouseEventHandler(OnMouseTransition), true);
        EventManager.RegisterClassHandler(typeof(TreeViewItem), UIElement.MouseLeaveEvent, new MouseEventHandler(OnMouseTransition), true);
        EventManager.RegisterClassHandler(typeof(TreeViewItem), UpdateOverItemEvent, new RoutedEventHandler(OnUpdateOverItem));
    }
    public static bool GetIsMouseDirectlyOverItem(DependencyObject obj)
    {
        return (bool)obj.GetValue(IsMouseDirectlyOverItemProperty);
    }
    private static object CalculateIsMouseDirectlyOverItem(DependencyObject item, object value)
    {
        return item == CurrentItem;
    }
    private static void OnUpdateOverItem(object sender, RoutedEventArgs e)
    {
        CurrentItem = sender as TreeViewItem;
        CurrentItem.InvalidateProperty(IsMouseDirectlyOverItemProperty);
        e.Handled = true;
    }
    private static void OnMouseTransition(object sender, MouseEventArgs e)
    {
        lock (IsMouseDirectlyOverItemProperty)
        {
            if (CurrentItem != null)
            {
                DependencyObject oldItem = CurrentItem;
                CurrentItem = null;
                oldItem.InvalidateProperty(IsMouseDirectlyOverItemProperty);
            }

            Mouse.DirectlyOver?.RaiseEvent(new RoutedEventArgs(UpdateOverItemEvent));
        }
    }
}
<Style TargetType="{x:Type ListBoxItem}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type ListBoxItem}">
                <Border Name="Border" BorderThickness="1" Background="Transparent">
                    <ContentPresenter />
                </Border>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsMouseOver" Value="True">
                        <Setter TargetName="Border" Property="Background" Value="#E5F3FB" />
                        <Setter TargetName="Border" Property="BorderBrush" Value="#70C0E7" />
                    </Trigger>
                    <Trigger Property="IsSelected" Value="True">
                        <Setter TargetName="Border" Property="Background" Value="#CBE8F6" />
                        <Setter TargetName="Border" Property="BorderBrush" Value="#26A0DA" />
                    </Trigger>
                    <MultiTrigger>
                        <MultiTrigger.Conditions>
                            <Condition Property="IsSelected" Value="True" />
                            <Condition Property="Selector.IsSelectionActive" Value="False" />
                        </MultiTrigger.Conditions>
                        <Setter TargetName="Border" Property="Background" Value="#F6F6F6" />
                        <Setter TargetName="Border" Property="BorderBrush" Value="#DADADA" />
                    </MultiTrigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>
<Style TargetType="{x:Type ListViewItem}" BasedOn="{StaticResource {x:Type ListBoxItem}}" />
<Style TargetType="{x:Type ComboBoxItem}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type ComboBoxItem}">
                <Border Name="Border" BorderThickness="1" Padding="1" Background="Transparent">
                    <ContentPresenter />
                </Border>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsMouseOver" Value="True">
                        <Setter TargetName="Border" Property="Background" Value="#E5F3FB" />
                        <Setter TargetName="Border" Property="BorderBrush" Value="#70C0E7" />
                    </Trigger>
                    <Trigger Property="IsSelected" Value="True">
                        <Setter TargetName="Border" Property="Background" Value="#CBE8F6" />
                        <Setter TargetName="Border" Property="BorderBrush" Value="#26A0DA" />
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>