How to get TranslateTransform without x:Name RSS

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  ryanvs

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  How to get TranslateTransform without x:Name

  Aug 22, 2008 07:39 AM | LINK

  Is it possible to a refernce in code for a TranslateTransform if it doesn't have an x:Name attribute after the UserControl has loaded? For example:

  <Ellipse x:Name="Ellipse01" 
    Height="25" Width="25"
    Canvas.Left="0" Canvas.Top="0"
    Fill="#FFEE3131" Stroke="#FF000000"
    RenderTransformOrigin="0.5,0.5">
    <Ellipse.RenderTransform>
      <TransformGroup>
        <ScaleTransform/>
        <SkewTransform/>
        <RotateTransform/>
        <TranslateTransform 
  	    x:Name="Ellipse01_Translate"
  		X="50" Y="50"/>
      </TransformGroup>
    </Ellipse.RenderTransform>
  </Ellipse>
  

  In this case I assigned a x:Name of "Ellipse01_Translate", but how can I get a reference without the x:Name? So far, I've only been able to get a reference if I assign an x:Name attribute. Otherwise the runtime Transform properties of the Shape only have the matrix transform and not the TransformGroup. All I have been able to use is FindName such as the following:

  TranslateTransform translate = (TranslateTransform) Ellipse01.FindName("Ellipse01_Translate");

  The idea is that I will pass the Shape to another class so I won't know the name of the transform and I may use multiple transforms such as rotation and scale. Thanks.

  FindName TranslateTransform

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  robhouweling

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  Re: How to get TranslateTransform without x:Name

  Aug 22, 2008 07:51 AM | LINK

  Try this:

  TranslateTransform translate;
  var renderTransform = Ellipse01.RenderTransform;
  if (renderTransform is TransformGroup)
  {
      TransformGroup transformGroup = (TransformGroup)renderTransform;
      foreach (Transform transform in transformGroup.Children)
      {
          if (transform is TranslateTransform)
          {
              translate = (TranslateTransform)transform;
          }
      }
  }

  (If this has answered your question, please click on mark as answer on this post)
  
  
  
  Cheers!
  
  Rob Houweling
  
  
  
  
  
  My blog
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  robhouweling

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  Re: How to get TranslateTransform without x:Name

  Aug 22, 2008 08:25 AM | LINK

  You could also create an extension method for this.
  Not tested thoroughly, but here's one that works in your situation:

  public static T GetTransformation<T>(this UIElement Element)
  {
      T translate = default(T);
      var renderTransform = Element.RenderTransform;
      if (renderTransform is TransformGroup)
      {
          TransformGroup transformGroup = (TransformGroup)renderTransform;
          foreach (var transform in transformGroup.Children)
          {
              if (transform is T)
              {
                  translate = (T)(object)transform;
              }
          }
      }
      return translate;
  }

  (If this has answered your question, please click on mark as answer on this post)
  
  
  
  Cheers!
  
  Rob Houweling
  
  
  
  
  
  My blog
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  ryanvs

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  Re: How to get TranslateTransform without x:Name

  Aug 22, 2008 08:33 AM | LINK

  Excellent. That is awesome. Thanks.