UIElement.RenderTransform property

Gets or sets transform information that affects the rendering position of a UIElement.

Syntax

public Transform RenderTransform { get; set; }

<uiElement>
  <uiElement.RenderTransform>
    singleTransform
  </uiElement.RenderTransform>
</uiElement>

XAML Values

singleTransform

Exactly one object element for an object that derives from Transform. This is typically one of the transforms: RotateTransform, ScaleTransform, SkewTransform, TranslateTransform, MatrixTransform, or TransformGroup. By using TransformGroup here, you can apply multiple transforms by defining child object elements of the TransformGroup. See the "XAML Values" section for TransformGroup. Also, custom transforms might derive from MatrixTransform.

Property value

Type: Transform

Describes the specifics of the desired render transform. The default value is null.

Remarks

You can animate a transform, if you target sub-properties of the specific transform being used that take Double values. Or you can use ObjectAnimationUsingKeyFrames to cycle through distinct transforms. Classes such as QuarticEase show some example XAML.

If you do animate RenderTransform, make sure there is an existing starting Transform value, even if it is all at default values. You can't animate a RenderTransform value that is initially null.

Examples

This XAML defines a Matrix that provides data for a MatrixTransform applied to a rectangular shape as its RenderTransform. In this case, the matrix combines an offset (OffsetX and OffsetY) and a skew (M12). Note that this same effect could have been produced by combining a TranslateTransform and a SkewTransform; whether to use a single Matrix or combinations of discrete transforms (with TransformGroup) is a matter of coding style; the results are identical.

<Rectangle Width="60" Height="60" Fill="Blue">
  <Rectangle.RenderTransform>
    <MatrixTransform>
      <MatrixTransform.Matrix >
        <!-- This matrix transforms the x,y position of the rectangle and skews it. -->
        <Matrix OffsetX="30" OffsetY="100" M12="0.5" />
      </MatrixTransform.Matrix>
    </MatrixTransform>
  </Rectangle.RenderTransform>
</Rectangle>

Requirements

See also

UIElement

TranslateTransform

XAML two-dimensional transforms sample

Build date: 1/31/2013