SORU
20 Mart 2009, Cuma


Vurgulamak tüm WPF çizgi TreeViewİtem

Eğer TreeViewİtem arka Plan kurdum başlığın sadece vurgular. Nasıl bütün çizgi işaretleyebilir miyim?

Bir yazı neredeyse bir problem çözme http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/b04f73e2-0b10-4d97-a6da-64df2e30c21d/ buldum

Ama bazı sorunlar var: 1. Tüm satırı vurgulayın değil 2. Ağaç Vista XP tarzı vardır. Böyle olduğu gibi Vista'da da aynı şekilde görünüyor benim olurdu. ama eğer kullanıcı teması XP için değişti eğer XP olması gerektiği şekilde. 3. Çok XAML...

Bak ben ne herhangi bir fikir?

CEVAP
23 Mart 2009, PAZARTESİ


İşte, üçüncü kez bir çekicilik. Böyle bir şey istiyorsanız.

Full Width TreeView

Bu biraz daha fazla iş alır. Bunu yapmanın pek çok yolu vardır eminim, ama bu yöntem bir Dönüştürücü Uzunluk ve Derinliği almak için TreeViewİtem uzatma yöntemi kullanır. Bunların her ikisi de sıkıca TreeViewİtem görsel ağaç bağlanır, Şablonlar ile uğraşmaya başlarsa o zaman sıkıntı olabilir. Yine, burada önemli bir parçasıdır, ve aşağıda tam kod.

<ControlTemplate TargetType="{x:Type TreeViewItem}">
  <ControlTemplate.Resources>
      <local:LeftMarginMultiplierConverter Length="19" x:Key="lengthConverter" />
  </ControlTemplate.Resources>
  <StackPanel>
        <Border Name="Bd"
          Background="{TemplateBinding Background}"
          BorderBrush="{TemplateBinding BorderBrush}"
          BorderThickness="{TemplateBinding BorderThickness}"
          Padding="{TemplateBinding Padding}">
            <Grid Margin="{Binding Converter={StaticResource lengthConverter},
                    RelativeSource={RelativeSource TemplatedParent}}">

                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="19" />
                    <ColumnDefinition />
                </Grid.ColumnDefinitions>
                <ToggleButton x:Name="Expander"
                    Style="{StaticResource ExpandCollapseToggleStyle}"
                    IsChecked="{Binding Path=IsExpanded,
                    RelativeSource={RelativeSource TemplatedParent}}"
                    ClickMode="Press"/>

                <ContentPresenter x:Name="PART_Header"
                    Grid.Column="1"
                    ContentSource="Header"
                    HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"/>
            </Grid>
      </Border>
      <ItemsPresenter x:Name="ItemsHost" />
    </StackPanel>
    <!-- Triggers -->
</ControlTemplate>

TreeViewDepth Uzantısı

public static class TreeViewItemExtensions
{
    public static int GetDepth(this TreeViewItem item)
    {
        TreeViewItem parent;
        while ((parent = GetParent(item)) != null)
        {
            return GetDepth(parent)   1;
        }
        return 0;
    }

    private static TreeViewItem GetParent(TreeViewItem item)
    {
        var parent = VisualTreeHelper.GetParent(item);
        while (!(parent is TreeViewItem || parent is TreeView))
        {
            parent = VisualTreeHelper.GetParent(parent);
        }
        return parent as TreeViewItem;
    }
}

LeftMarginMultiplierConverter

public class LeftMarginMultiplierConverter : IValueConverter
{
    public double Length { get; set; }

    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        var item = value as TreeViewItem;
        if (item == null)
            return new Thickness(0);

        return new Thickness(Length * item.GetDepth(), 0, 0, 0);
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new System.NotImplementedException();
    }
}

Kontrol

<TreeView Margin="50" HorizontalContentAlignment="Stretch">
    <TreeViewItem Header="test2"/>
    <TreeViewItem Header="test2">
        <TreeViewItem Header="sub test">
            <TreeViewItem Header="sub test1-1"/>
            <TreeViewItem Header="sub test1-2"/>
        </TreeViewItem>
        <TreeViewItem Header="sub test2"/>
    </TreeViewItem>
    <TreeViewItem Header="test3"/>
</TreeView>

Tam TreeViewİtem Tarzı

<SolidColorBrush x:Key="GlyphBrush" Color="#444" />

<!--=================================================================
     TreeViewItem
  ==================================================================-->
<Style x:Key="ExpandCollapseToggleStyle" TargetType="ToggleButton">
  <Setter Property="Focusable" Value="False"/>
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="ToggleButton">
        <Grid
          Width="15"
          Height="13"
          Background="Transparent">
          <Path x:Name="ExpandPath"
            HorizontalAlignment="Left" 
            VerticalAlignment="Center" 
            Margin="1,1,1,1"
            Fill="{StaticResource GlyphBrush}"
            Data="M 4 0 L 8 4 L 4 8 Z"/>
        </Grid>
        <ControlTemplate.Triggers>
          <Trigger Property="IsChecked"
               Value="True">
            <Setter Property="Data"
                TargetName="ExpandPath"
                Value="M 0 4 L 8 4 L 4 8 Z"/>
          </Trigger>
        </ControlTemplate.Triggers>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>
<Style x:Key="TreeViewItemFocusVisual">
  <Setter Property="Control.Template">
    <Setter.Value>
      <ControlTemplate>
        <Border>
          <Rectangle Margin="0,0,0,0"
                 StrokeThickness="5"
                 Stroke="Black"
                 StrokeDashArray="1 2"
                 Opacity="0"/>
        </Border>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>


<Style x:Key="{x:Type TreeViewItem}"
     TargetType="{x:Type TreeViewItem}">
  <Setter Property="Background"
      Value="Transparent"/>
  <Setter Property="HorizontalContentAlignment"
      Value="{Binding Path=HorizontalContentAlignment,
              RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
  <Setter Property="VerticalContentAlignment"
      Value="{Binding Path=VerticalContentAlignment,
              RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
  <Setter Property="Padding"
      Value="1,0,0,0"/>
  <Setter Property="Foreground"
      Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
  <Setter Property="FocusVisualStyle"
      Value="{StaticResource TreeViewItemFocusVisual}"/>
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="{x:Type TreeViewItem}">
        <ControlTemplate.Resources>
            <local:LeftMarginMultiplierConverter Length="19" x:Key="lengthConverter" />
        </ControlTemplate.Resources>
        <StackPanel>
        <Border Name="Bd"
              Background="{TemplateBinding Background}"
              BorderBrush="{TemplateBinding BorderBrush}"
              BorderThickness="{TemplateBinding BorderThickness}"
              Padding="{TemplateBinding Padding}">
            <Grid Margin="{Binding Converter={StaticResource lengthConverter},
                              RelativeSource={RelativeSource TemplatedParent}}">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="19" />
                <ColumnDefinition />
            </Grid.ColumnDefinitions>
          <ToggleButton x:Name="Expander"
                  Style="{StaticResource ExpandCollapseToggleStyle}"
                  IsChecked="{Binding Path=IsExpanded,
                              RelativeSource={RelativeSource TemplatedParent}}"
                  ClickMode="Press"/>

            <ContentPresenter x:Name="PART_Header"
            Grid.Column="1"
                      ContentSource="Header"
                      HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"/>
            </Grid>
          </Border>
          <ItemsPresenter x:Name="ItemsHost" />
        </StackPanel>
        <ControlTemplate.Triggers>
          <Trigger Property="IsExpanded"
               Value="false">
            <Setter TargetName="ItemsHost"
                Property="Visibility"
                Value="Collapsed"/>
          </Trigger>
          <Trigger Property="HasItems"
               Value="false">
            <Setter TargetName="Expander"
                Property="Visibility"
                Value="Hidden"/>
          </Trigger>
          <MultiTrigger>
            <MultiTrigger.Conditions>
              <Condition Property="HasHeader"
                     Value="false"/>
              <Condition Property="Width"
                     Value="Auto"/>
            </MultiTrigger.Conditions>
            <Setter TargetName="PART_Header"
                Property="MinWidth"
                Value="75"/>
          </MultiTrigger>
          <MultiTrigger>
            <MultiTrigger.Conditions>
              <Condition Property="HasHeader"
                     Value="false"/>
              <Condition Property="Height"
                     Value="Auto"/>
            </MultiTrigger.Conditions>
            <Setter TargetName="PART_Header"
                Property="MinHeight"
                Value="19"/>
          </MultiTrigger>
          <Trigger Property="IsSelected"
               Value="true">
            <Setter TargetName="Bd"
                Property="Background"
                Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}"/>
            <Setter Property="Foreground"
                Value="{DynamicResource {x:Static SystemColors.HighlightTextBrushKey}}"/>
          </Trigger>
          <MultiTrigger>
            <MultiTrigger.Conditions>
              <Condition Property="IsSelected"
                     Value="true"/>
              <Condition Property="IsSelectionActive"
                     Value="false"/>
            </MultiTrigger.Conditions>
            <Setter TargetName="Bd"
                Property="Background"
                Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/>
            <Setter Property="Foreground"
                Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
          </MultiTrigger>
          <Trigger Property="IsEnabled"
               Value="false">
            <Setter Property="Foreground"
                Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
          </Trigger>
        </ControlTemplate.Triggers>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

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