WPF列表视图分组标题的滚动偏移量
我对WPF列表视图有一个奇怪的问题：
背景
- 使用WPF ListView
- 使用网格视图添加列
- 虚拟化
- 使用4层分组将数据分组为分层结构的扩展器
- 绑定到window.resources中定义的
CollectionViewSource - 由于数据的缩进（数据包含在扩展器中），标头与列数据偏移，所以我使用
TranslateTransform将标头偏移少量
问题
所有内容都能正确显示，并具有完美的层次结构，但是当我向右滚动时，会出现数据不断滚动但标题停止的情况，这会导致标题和数据列之间出现偏移。
我确定这与我偏移标头以及将标头的长度与数据进行比较的方式有关，但是我似乎找不到导致此问题的原因。
列表视图滚动到偏移点之前
列表视图滚动到末尾
代码
nb。我省略了一些样式，因为此处答案的字符数有限
<!-- The main grid -->
<ListView x:Name="DataGrid"
Margin="0"
Background="{StaticResource MainBackgroundBrush}"
BorderThickness="0"
Foreground="{StaticResource LightBackgroundBrush}"
ItemsSource="{Binding Source={StaticResource DataCollectionView}}"
ScrollViewer.IsDeferredScrollingEnabled="False"
SelectionMode="Single"
VirtualizingPanel.CacheLength="1,2"
VirtualizingStackPanel.IsContainerVirtualizable="True"
VirtualizingStackPanel.IsVirtualizing="True"
VirtualizingStackPanel.IsVirtualizingWhenGrouping="True"
VirtualizingStackPanel.ScrollUnit="Pixel"
VirtualizingStackPanel.VirtualizationMode="Recycling">
<!-- Some styles and resources exclusive to this list view -->
<ListView.Resources>
<Setter Property="IsExpanded" Value="False" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Expander}">
<Border Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
SnapsToDevicePixels="true">
<DockPanel>
<ToggleButton x:Name="HeaderSite"
Width="600"
MinWidth="0"
MinHeight="0"
Margin="1"
Padding="{TemplateBinding Padding}"
HorizontalAlignment="Left"
VerticalAlignment="Center"
Background="{TemplateBinding Background}"
Content="{TemplateBinding Header}"
ContentTemplateSelector="{TemplateBinding HeaderTemplateSelector}"
DockPanel.Dock="Top"
FontFamily="{TemplateBinding FontFamily}"
FontSize="{TemplateBinding FontSize}"
FontStretch="{TemplateBinding FontStretch}"
FontStyle="{TemplateBinding FontStyle}"
FontWeight="{TemplateBinding FontWeight}"
Foreground="{TemplateBinding Foreground}"
IsChecked="{Binding IsExpanded, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}"
Template="{StaticResource AnimatedExpanderButton}" />
<ContentPresenter x:Name="ExpandSite"
Margin="{TemplateBinding Padding}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
DockPanel.Dock="Bottom"
Focusable="false"
Visibility="Collapsed" />
</DockPanel>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsExpanded" Value="true">
<Setter TargetName="ExpandSite" Property="Visibility" Value="Visible" />
</Trigger>
<Trigger Property="ExpandDirection" Value="Up">
<Setter TargetName="HeaderSite" Property="Background" Value="Red" />
<Setter TargetName="ExpandSite" Property="DockPanel.Dock" Value="Top" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<DataTrigger Binding="{Binding Name}" Value="Title">
<Setter Property="IsEnabled" Value="False" />
<Setter Property="IsExpanded" Value="True" />
</DataTrigger>
</Style.Triggers>
</Style>
<!-- Styles the column headers -->
<Style TargetType="{x:Type GridViewColumnHeader}">
<!-- Add the event handler for a right click on the header -->
<EventSetter Event="MouseRightButtonUp" Handler="GridViewColumnHeader_MouseRightButtonUp" />
<Setter Property="Background" Value="{StaticResource GradientBrush}" />
<Setter Property="ClickMode" Value="Press" />
<Setter Property="FontSize" Value="12" />
<Setter Property="FontWeight" Value="Bold" />
<Setter Property="Foreground" Value="{StaticResource LightBackgroundBrush}" />
<Setter Property="Height" Value="30" />
<Setter Property="MinWidth" Value="20" />
<!-- Offset the column headers to match the column data as the expanders will have offset the data -->
<Setter Property="RenderTransform">
<Setter.Value>
<TranslateTransform X="13" />
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GridViewColumnHeader}">
<Border BorderBrush="Black" BorderThickness="1,0,0,1">
<Grid Background="{TemplateBinding Background}">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<!-- The two column re sizers -->
<Thumb x:Name="PART_HeaderGripper"
Width="18"
Margin="0,0,-10,0"
HorizontalAlignment="Right"
Background="Black"
Cursor="SizeWE">
<Thumb.Template>
<ControlTemplate TargetType="{x:Type Thumb}">
<Border Padding="{TemplateBinding Padding}" Background="Transparent">
<Rectangle Width="1"
HorizontalAlignment="Center"
Fill="{TemplateBinding Background}" />
</Border>
</ControlTemplate>
</Thumb.Template>
</Thumb>
<!-- The main content of the header -->
<ContentPresenter Name="HeaderContent"
Grid.Column="0"
Margin="5"
HorizontalAlignment="Center"
VerticalAlignment="Center" />
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ListView.Resources>
<!-- Templates each level -->
<ListView.GroupStyle>
<!-- Style for groups at the top level. this level is equivalent to a single database -->
<GroupStyle>
<GroupStyle.ContainerStyle>
<Style TargetType="{x:Type GroupItem}">
<Setter Property="Margin" Value="0" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GroupItem}">
<Border Margin="1"
Background="{StaticResource FandFBrush}"
BorderBrush="Black"
BorderThickness="2"
CornerRadius="3">
<Expander Margin="0"
FontSize="12"
FontWeight="Bold"
Foreground="{StaticResource LightBackgroundBrush}"
Header="{Binding Name}"
IsExpanded="True">
<ItemsPresenter x:Name="IP"
Margin="0"
VirtualizingPanel.IsContainerVirtualizable="True"
VirtualizingPanel.IsVirtualizing="True"
VirtualizingPanel.IsVirtualizingWhenGrouping="True"
VirtualizingPanel.ScrollUnit="Item"
VirtualizingPanel.VirtualizationMode="Recycling" />
</Expander>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GroupStyle.ContainerStyle>
</GroupStyle>
<!-- Style for groups at the second level. this level is equivalent to a single case -->
<GroupStyle>
<GroupStyle.ContainerStyle>
<Style TargetType="{x:Type GroupItem}">
<Setter Property="Margin" Value="0" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GroupItem}">
<Border Margin="0"
Background="{StaticResource MainBackgroundBrush}"
BorderBrush="Black"
BorderThickness="2"
CornerRadius="3">
<Expander Margin="0"
FontSize="12"
FontWeight="Bold"
Foreground="{StaticResource LightBackgroundBrush}"
Header="{Binding Name}"
IsExpanded="True">
<ItemsPresenter x:Name="IP"
Margin="0"
VirtualizingPanel.IsContainerVirtualizable="True"
VirtualizingPanel.IsVirtualizing="True"
VirtualizingPanel.IsVirtualizingWhenGrouping="True"
VirtualizingPanel.ScrollUnit="Item"
VirtualizingPanel.VirtualizationMode="Recycling" />
</Expander>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GroupStyle.ContainerStyle>
</GroupStyle>
<!-- Style for groups at the third level. this level is equivalent to a single sample type -->
<GroupStyle>
<GroupStyle.ContainerStyle>
<Style TargetType="{x:Type GroupItem}">
<Setter Property="Margin" Value="0" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GroupItem}">
<Border Margin="1"
BorderBrush="Black"
BorderThickness="0"
CornerRadius="3">
<ItemsPresenter x:Name="IP"
Margin="0"
VirtualizingPanel.IsContainerVirtualizable="True"
VirtualizingPanel.IsVirtualizing="True"
VirtualizingPanel.IsVirtualizingWhenGrouping="True"
VirtualizingPanel.ScrollUnit="Item"
VirtualizingPanel.VirtualizationMode="Recycling" />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GroupStyle.ContainerStyle>
</GroupStyle>
<!-- Style for groups at the fourth level. this level is equivalent to a single sample -->
<GroupStyle>
<GroupStyle.ContainerStyle>
<Style TargetType="{x:Type GroupItem}">
<Setter Property="Margin" Value="0" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GroupItem}">
<Border Margin="0,0,0,1"
Background="Transparent"
BorderBrush="Black"
BorderThickness="2,2,2,2"
CornerRadius="3,3,0,0"
Visibility="{Binding Items[0].Fragment.Sample.IsVisible, Converter={StaticResource BooleanToVisibilityConverter}}">
<Expander Margin="0"
FontSize="12"
FontWeight="Bold"
Foreground="Black"
IsExpanded="True">
<Border Grid.Row="0"
Margin="1,0,1,1"
Background="{StaticResource MainBackgroundBrush}"
BorderBrush="Black"
BorderThickness="2,1,2,2"
CornerRadius="2">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<!-- The measurements themselves -->
<Border Grid.Row="0"
Margin="0"
Background="{StaticResource MainBackgroundBrush}"
BorderBrush="Black"
BorderThickness="0,0,0,1"
CornerRadius="0">
<ItemsPresenter x:Name="IP"
Margin="0"
VirtualizingPanel.IsContainerVirtualizable="True"
VirtualizingPanel.IsVirtualizing="True"
VirtualizingPanel.IsVirtualizingWhenGrouping="True"
VirtualizingPanel.ScrollUnit="Item"
VirtualizingPanel.VirtualizationMode="Recycling" />
</Border> </Grid>
</Border>
</Expander>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GroupStyle.ContainerStyle>
</GroupStyle>
</ListView.GroupStyle>
</ListView>
0 个答案:
没有答案
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