Is CompositeTransform used only in silverlight? - wpf

Question

CompositeTransform is only used for silverlight?. Is there anyway we can use that in WPF or any equivalent replacement?

Answer 1

There is no CompositeTransform in WPF however there is a TransformGroup. Hence an equivalent replacement is a TransformGroup containing ScaleTransform, SkewTransform, RotateTransform and TranslateTransform in that order.

Answer 2

Here is a much nicer solution if you are anal about code cleanliness:
http://www.singulink.com/CodeIndex/post/getting-rid-of-ugly-transformgroup-blocks-in-wpf
Its easy on the eyes and because it just returns a TransformGroup, you can still use the Blend designer to work with animating over the transform!
<Rectangle Width="100" Height="100" Fill="LightGreen"
RenderTransform="{data:CompositeTransform ScaleX=2.5, ScaleY=1, SkewX=-60, Rotation=145}"
RenderTransformOrigin="0.5,0.5" />
Implementation:
public class CompositeTransformExtension : MarkupExtension
{
public double CenterX
{
get { return _scale.CenterX; }
set
{
_scale.CenterX = value;
_skew.CenterX = value;
_rotate.CenterX = value;
}
}
public double CenterY
{
get { return _scale.CenterY; }
set
{
_scale.CenterY = value;
_skew.CenterY = value;
_rotate.CenterY = value;
}
}
public double ScaleX
{
get { return _scale.ScaleX; }
set { _scale.ScaleX = value; }
}
public double ScaleY
{
get { return _scale.ScaleY; }
set { _scale.ScaleY = value; }
}
public double SkewX
{
get { return _skew.AngleX; }
set { _skew.AngleX = value; }
}
public double SkewY
{
get { return _skew.AngleY; }
set { _skew.AngleY = value; }
}
public double Rotation
{
get { return _rotate.Angle; }
set { _rotate.Angle = value; }
}
public double TranslateX
{
get { return _translate.X; }
set { _translate.X = value; }
}
public double TranslateY
{
get { return _translate.Y; }
set { _translate.Y = value; }
}
private ScaleTransform _scale = new ScaleTransform();
private SkewTransform _skew = new SkewTransform();
private RotateTransform _rotate = new RotateTransform();
private TranslateTransform _translate = new TranslateTransform();
public CompositeTransformExtension()
{
}
public override object ProvideValue(IServiceProvider serviceProvider)
{
var group = new TransformGroup();
group.Children.Add(_scale);
group.Children.Add(_skew);
group.Children.Add(_rotate);
group.Children.Add(_translate);
return group;
}
}