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WPF图像拉伸(stretch)填充不会拉伸(stretch)到它的 parent 的边界

转载 作者:行者123 更新时间:2023-12-04 13:29:07 39 4
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这是我的 XAML 及其外观:

<Window x:Class="GameLenseWpf.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="450" Width="350" MinHeight="450" MinWidth="350">

<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="0.15*" />
<RowDefinition />
</Grid.RowDefinitions>
<Image Grid.Row="0" Stretch="Fill" Source="Image/topBarBg.png" />
<StackPanel Orientation="Horizontal" Grid.Row="0">
<TextBlock Text="Platform"
Foreground="White"
FontFamily="Georgia"
FontSize="15"
Margin="10"
HorizontalAlignment="Center"
VerticalAlignment="Center"/>
<ComboBox x:Name="cmbPlatform"
Margin="10"
FontFamily="Georgia"
FontSize="15"
MinHeight="30"
MinWidth="140"
VerticalAlignment="Center"
VerticalContentAlignment="Center" SelectionChanged="cmbPlatform_SelectionChanged">
<ComboBoxItem>All Platforms</ComboBoxItem>
<ComboBoxItem>Playstation 3</ComboBoxItem>
<ComboBoxItem>XBox 360</ComboBoxItem>
<ComboBoxItem>Wii</ComboBoxItem>
<ComboBoxItem>PSP</ComboBoxItem>
<ComboBoxItem>DS</ComboBoxItem>
</ComboBox>
</StackPanel>
<Image x:Name="imgAbout" Grid.Row="0" Source="Image/about.png"
Height="16" HorizontalAlignment="Right"
VerticalAlignment="Center"
Margin="0 0 10 0" />
<ListBox Grid.Row="1" x:Name="lstGames" Background="#343434" Padding="5"
ScrollViewer.HorizontalScrollBarVisibility="Disabled"
HorizontalContentAlignment="Stretch">
<ListBox.Resources>
<Style TargetType="ListBoxItem">
<Style.Resources>
<!-- SelectedItem with focus -->
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}"
Color="Transparent" />
<!-- SelectedItem without focus -->
<SolidColorBrush x:Key="{x:Static SystemColors.ControlBrushKey}"
Color="Transparent" />
<!-- SelectedItem text foreground -->
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightTextBrushKey}"
Color="Black" />
</Style.Resources>
<Setter Property="FocusVisualStyle" Value="{x:Null}" />
</Style>
</ListBox.Resources>
<ListBox.ItemTemplate>
<DataTemplate>
<Grid Height="120" Margin="0 10" >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="90"/>
<ColumnDefinition />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition />
</Grid.RowDefinitions>

<Border BorderBrush="#202020" BorderThickness="5" CornerRadius="4" Panel.ZIndex="0">
<Canvas Grid.Row="0" Grid.Column="0" >
<Image Source="{Binding ImageUrl}" Canvas.Left="0" Canvas.Top="0" Stretch="UniformToFill"/>
<Image Source="Image/youtube.png" Canvas.Bottom="0" Canvas.Right="0" Height="20" Width="20" />
</Canvas>
</Border>

<StackPanel Grid.Row="0" Grid.Column="1" Margin="12 0 0 0">
<StackPanel Orientation="Horizontal">
<TextBlock Text="Title:" FontFamily="Arial" Foreground="White"/>
<TextBlock Text="{Binding Title}" FontFamily="Arial" Foreground="White" />
</StackPanel>
<StackPanel Orientation="Horizontal">
<TextBlock Text="Release Date:" FontFamily="Arial" Foreground="White" />
<TextBlock Text="{Binding ReleaseDate}" FontFamily="Arial" Foreground="White" />
</StackPanel>
<TextBlock Text="Synopsis" FontFamily="Arial" Foreground="White" />
<TextBox Background="#454545" Foreground="White" TextWrapping="Wrap" Text="{Binding Synopsis}" MaxHeight="73" />
</StackPanel>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Grid>
</Window>

enter image description here

我只想拉伸(stretch)游戏图像以填充 Canvas 边界, Canvas 边界位于更圆的边界内。

为什么不这样做?

最佳答案

问题是您在 Canvas 中有图像。基本上,任何时候你在 Canvas 面板中放置一个元素,你都忽略了整个布局系统。 Canvas 中的元素根本不参与布局。您要做的是用普通的 Grid 元素替换 Canvas 元素(您不需要定义行或列,它将默认为单行/列。)

编辑

实际上,更仔细地查看您正在尝试做的事情,您需要进行一些细微的调整。试试这个。

<Border BorderBrush="#202020" BorderThickness="5" CornerRadius="4">
<Grid>
<Image Source="{Binding ImageUrl}" Stretch="UniformToFill"/>
<Image Source="Image/youtube.png" HorizontalAlignment="Right" VerticalAlignment="Bottom" Height="20" Width="20" />
</Grid>
</Border>

关于WPF图像拉伸(stretch)填充不会拉伸(stretch)到它的 parent 的边界,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/6010187/

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