#801 – Creating a Mirror Image Using a RenderTransform

You can flip an object horizontally, so that you get a mirror image, using a ScaleTransform with the ScaleX value of -1.  If you use a LayoutTransform, the object will be layed out as intended after doing the transformation.

You might, however, want to do a transform to get a mirror image only after laying everything out.  To do this, you use a RenderTransform.  You still set the ScaleX property to -1, but you also need to set the RenderTransformOrigin to be located in the middle of the object being transformed.

    <StackPanel RenderTransformOrigin="0.5,0.5">
        <StackPanel.RenderTransform>
            <ScaleTransform ScaleX="-1"/>
        </StackPanel.RenderTransform>

        <Label Content="Earthquake hits San Francisco!" Margin="5"
               FontSize="16" FontFamily="Constantia" />
        <StackPanel Orientation="Horizontal" HorizontalAlignment="Center">
            <DatePicker SelectedDate="4/18/1906"/>
            <Label Content="Horrible!" FontWeight="Bold"/>
        </StackPanel>
        <Button Content="Donate $$ Now" HorizontalAlignment="Center"
                Padding="10,5" Margin="15"/>
    </StackPanel>

801-001

About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

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