<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
x:Class="Microsoft.Samples.Graphics.RectangleExample"
WindowTitle="Example">
<Canvas>
<Rectangle Grid.Row="1" RenderTransformOrigin="1,0.5">
<Rectangle.Fill>
<VisualBrush Visual="{Binding ElementName=txt}"></VisualBrush>
</Rectangle.Fill>
<Rectangle.OpacityMask>
<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
<GradientStop Offset="0.3" Color="Transparent"></GradientStop>
<GradientStop Offset="1" Color="#44000000"></GradientStop>
</LinearGradientBrush>
</Rectangle.OpacityMask>
<Rectangle.RenderTransform>
<ScaleTransform ScaleY="-1"></ScaleTransform>
</Rectangle.RenderTransform>
</Rectangle>
</Canvas>
</Page>