我正在学习 WPF,我正在尝试通过此处所述的 ListBox 创建图形。
一切都按预期工作,除了图表(ItemsPanel)没有按应有的方式旋转 90 度。
DataContext 只是一个ObservableCollection<KeyValuePair<double, int>>
.
这是我的 XAML:
<Window x:Class="XNM.GUI.Graph"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="XNM" MinHeight="400" MinWidth="600" Height="400" Width="600"
Icon="..\Resources\XNM2.ico"
Style="{DynamicResource SkinWindowStyle}">
<Border BorderBrush="Black" BorderThickness="5" Margin="10" Padding="5"
CornerRadius="5">
<Grid>
<ListBox ItemsSource="{Binding}"
ItemTemplate="{DynamicResource BarChartItemTemplate}"
ItemsPanel="{DynamicResource BarChartItemsPanel}" />
</Grid>
</Border>
<Window.Resources>
<DataTemplate x:Key="BarChartItemTemplate">
<Border Width="200" Height="50">
<Grid>
<Rectangle Fill="Red" StrokeThickness="0"
Height="40" Width="{Binding Value}" Margin="3"
HorizontalAlignment="Right"
VerticalAlignment="Bottom">
<Rectangle.LayoutTransform>
<ScaleTransform ScaleX="20" />
</Rectangle.LayoutTransform>
</Rectangle>
<TextBlock Margin="20" FontWeight="Bold"
HorizontalAlignment="Right" VerticalAlignment="Center"
Text="{Binding Key}">
<TextBlock.LayoutTransform>
<ScaleTransform ScaleX="-1" ScaleY="1" />
</TextBlock.LayoutTransform>
</TextBlock>
</Grid>
</Border>
</DataTemplate>
<ItemsPanelTemplate x:Key="BarChartItemsPanel">
<VirtualizingStackPanel IsItemsHost="True">
<VirtualizingStackPanel.LayoutTransform>
<TransformGroup>
<RotateTransform Angle="90" />
<ScaleTransform ScaleX="-1" ScaleY="1" />
</TransformGroup>
</VirtualizingStackPanel.LayoutTransform>
</VirtualizingStackPanel>
</ItemsPanelTemplate>
</Window.Resources>
这是完整性背后的代码:
public partial class Graph : Window
{
private ObservableCollection<SensorData> _sensorData;
public Graph(ObservableCollection<SensorData> sensorData)
{
InitializeComponent();
this._sensorData = sensorData;
CreateGraph();
}
private void CreateGraph()
{
if (this._sensorData.Any())
{
this.DataContext = this._sensorData[0].CollatedResults;
}
}
}
有人可以在这里指出可能导致问题的原因。每当我以前使用模板时,我都没有遇到过这种问题,所以我有点难过。
谢谢。
更新
我发现这是导致问题的一种样式,尤其是ControlTemplate
下面的 XAML 部分:
<Style TargetType="{x:Type ListBox}">
<Setter Property="SnapsToDevicePixels" Value="true" />
<Setter Property="Background" Value="{StaticResource ControlBackgroundBrush}" />
<Setter Property="BorderBrush">
<Setter.Value>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FFA3AEB9" Offset="0" />
<GradientStop Color="#FF8399A9" Offset="0.375" />
<GradientStop Color="#FF718597" Offset="0.375" />
<GradientStop Color="#FF617584" Offset="1" />
</LinearGradientBrush>
</Setter.Value>
</Setter>
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto" />
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto" />
<Setter Property="ScrollViewer.CanContentScroll" Value="True" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListBox}">
<Grid>
<Border x:Name="Border" BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
CornerRadius="2"
Background="{DynamicResource ControlBackgroundBrush}" />
<ScrollViewer Margin="1"
Style="{DynamicResource NuclearScrollViewer}"
Focusable="false" Background="{x:Null}">
<StackPanel Margin="1,1,1,1" IsItemsHost="true" />
</ScrollViewer>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Background"
Value="{DynamicResource DisabledBackgroundBrush}"
TargetName="Border" />
<Setter Property="BorderBrush"
Value="{DynamicResource DisabledBorderBrush}"
TargetName="Border" />
</Trigger>
<Trigger Property="IsGrouping" Value="true">
<Setter Property="ScrollViewer.CanContentScroll" Value="false" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
现在由于我对样式缺乏了解,我不确定为什么会产生这种效果,但是当我注释掉该ControlTemplate
部分时,它可以按预期工作,诚然其他 ListBox 存在明显的样式问题。
有谁知道为什么这会导致我遇到的结果?希望我自己能弄明白,但我认为我需要一段时间才能理解这种程度的风格!
谢谢