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="RenderDemo.Pages.ClippingPage">
<Grid ColumnDefinitions="Auto" RowDefinitions="Auto,Auto">
<Grid.Styles>
<Styles>
<Style Selector="Border#clipped:pointerover">
<Setter Property="Border.Background" Value="Crimson"/>
</Style>
<Style Selector="Border#clipChild">
<Style.Animations>
<Animation Duration="0:0:2" IterationCount="Infinite">
<KeyFrame Cue="100%">
<Setter Property="RotateTransform.Angle" Value="360"/>
</KeyFrame>
</Animation>
</Style.Animations>
</Style>
</Styles>
</Grid.Styles>
<Border Name="clipped"
Background="Yellow"
Width="100"
Height="100"
Classes.clip="{Binding #useMask.IsChecked}">
<Border.Styles>
<Style Selector="Border.clip">
<Setter Property="Clip"
Value="M 58.625 0.07421875
C 50.305778 0.26687364 42.411858 7.0346526 41.806641 15.595703
C 42.446442 22.063923 39.707425 13.710754 36.982422 12.683594
C 29.348395 6.1821635 16.419398 8.4359222 11.480469 17.195312
C 6.0935256 25.476803 9.8118851 37.71125 18.8125 41.6875
C 9.1554771 40.62945 -0.070876925 49.146842 0.21679688 58.857422
C 0.21545578 60.872512 0.56758794 62.88911 1.2617188 64.78125
C 4.3821886 74.16708 16.298268 78.921772 25.03125 74.326172
C 28.266843 72.062552 26.298191 74.214838 25.414062 76.398438
C 21.407348 85.589198 27.295992 97.294293 37.097656 99.501953
C 46.864883 102.3541 57.82177 94.726518 58.539062 84.580078
C 58.142158 79.498998 59.307538 83.392694 61.207031 85.433594
C 67.532324 93.056874 80.440232 93.192029 86.882812 85.630859
C 93.836392 78.456939 92.396838 65.538666 84.115234 60.009766
C 79.783641 57.904836 83.569793 58.802369 86.375 58.193359
C 96.383335 56.457569 102.87506 44.824101 99.083984 35.394531
C 95.963498 26.008711 84.047451 21.254079 75.314453 25.849609
C 72.078834 28.113269 74.047517 25.960974 74.931641 23.777344
C 78.93827 14.586564 73.049722 2.8815081 63.248047 0.67382812
C 61.721916 0.22817968 60.165597 0.038541919 58.625 0.07421875 z " />
</Style>
</Border.Styles>
<Border Name="clipChild" Background="Red" Margin="4">
<!-- Setting opacity puts the TextBox on a new layer -->
<TextBox Text="Avalonia" Opacity="0.9" VerticalAlignment="Center"/>
<Border.RenderTransform>
<RotateTransform/>
</Border.RenderTransform>
</Border>
</Border>
<CheckBox Name="useMask" IsChecked="True" Grid.Row="1">Apply Geometry Clip</CheckBox>
</Grid>
</UserControl>