A cross-platform UI framework for .NET
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<UserControl xmlns="https://github.com/avaloniaui"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
x:Class="ControlCatalog.Pages.ViewboxPage">
<Grid RowDefinitions="Auto,*,*">
<StackPanel Orientation="Vertical" Spacing="4">
<TextBlock Classes="h2">A control used to scale single child.</TextBlock>
</StackPanel>
<Grid Grid.Row="1" ColumnDefinitions="*,Auto" HorizontalAlignment="Center" Margin="0,10,0,0">
<Border HorizontalAlignment="Center" Grid.Column="0" BorderThickness="1" BorderBrush="Orange" Width="200" Height="200">
<Border VerticalAlignment="Center" HorizontalAlignment="Center" Grid.Column="0" BorderThickness="1" BorderBrush="CornflowerBlue" Width="{Binding #WidthSlider.Value}" Height="{Binding #HeightSlider.Value}" >
<Viewbox
Stretch="{Binding #StretchSelector.SelectedItem.Content, FallbackValue={x:Static Stretch.Uniform}}"
StretchDirection="{Binding #StretchDirectionSelector.SelectedItem.Content, FallbackValue={x:Static StretchDirection.Both}}">
<Ellipse Width="50" Height="50" Fill="CornflowerBlue" />
</Viewbox>
</Border>
</Border>
<StackPanel HorizontalAlignment="Left" Orientation="Vertical" Grid.Column="1" Margin="8,0,0,0" Width="150">
<TextBlock Text="Width" />
<Slider Minimum="10" Maximum="200" Value="100" x:Name="WidthSlider" TickFrequency="25" TickPlacement="TopLeft" />
<TextBlock Text="Height" />
<Slider Minimum="10" Maximum="200" Value="100" x:Name="HeightSlider" TickFrequency="25" TickPlacement="TopLeft" />
<TextBlock Text="Stretch" />
<ComboBox x:Name="StretchSelector" HorizontalAlignment="Stretch" SelectedIndex="0" Margin="0,0,0,2" >
<ComboBox.Items>
<ComboBoxItem Content="{x:Static Stretch.Uniform}"/>
<ComboBoxItem Content="{x:Static Stretch.UniformToFill}"/>
<ComboBoxItem Content="{x:Static Stretch.Fill}"/>
<ComboBoxItem Content="{x:Static Stretch.None}"/>
</ComboBox.Items>
</ComboBox>
<TextBlock Text="Stretch Direction" />
<ComboBox x:Name="StretchDirectionSelector" SelectedIndex="0" HorizontalAlignment="Stretch" >
<ComboBox.Items>
<ComboBoxItem Content="{x:Static StretchDirection.Both}"/>
<ComboBoxItem Content="{x:Static StretchDirection.DownOnly}"/>
<ComboBoxItem Content="{x:Static StretchDirection.UpOnly}"/>
</ComboBox.Items>
</ComboBox>
</StackPanel>
</Grid>
</Grid>
</UserControl>