protected virtual void OnDecoratedElementChanged()
{
if (DecoratedElement == null)
{
this.ClearBinding(DecoratedCanvasTransformProperty);
this.ClearBinding(DecoratedPresenterTransformProperty);
this.ClearBinding(DecoratedPresenterTopProperty);
this.ClearBinding(DecoratedPresenterLeftProperty);
}
else
{
var decoratedCanvas = DecoratedElement.FindAncestor <Canvas>();
if (decoratedCanvas != null)
{
this.SetBinding(DecoratedCanvasTransformProperty, decoratedCanvas, RenderTransformProperty);
}
var decoratedPresenter = DecoratedElement.FindAncestor <AnimatedContentPresenter>();
if (decoratedPresenter != null)
{
this.SetBinding(DecoratedPresenterTransformProperty, decoratedPresenter, RenderTransformProperty);
this.SetBinding(DecoratedPresenterTopProperty, decoratedPresenter, Canvas.TopProperty);
this.SetBinding(DecoratedPresenterLeftProperty, decoratedPresenter, Canvas.LeftProperty);
}
}
}
private Transform CreateRenderTransform()
{
var decoratedCanvas = DecoratedElement?.FindAncestor <Canvas>();
if (decoratedCanvas == null)
{
return(Transform.Identity);
}
var transformFromDecoratedElementToCanvas = DecoratedElement.TransformToAncestor(decoratedCanvas) as Transform;
if (transformFromDecoratedElementToCanvas == null)
{
return(Transform.Identity);
}
var transformGroup = new TransformGroup();
transformGroup.Children.Add(transformFromDecoratedElementToCanvas);
transformGroup.Children.Add(DecoratedCanvasTransform);
return(transformGroup);
}
protected virtual void OnDecoratedElementChanged()
{
if (DecoratedElement == null)
{
this.ClearBinding(DecoratedCanvasTransformProperty);
this.ClearBinding(DecoratedElementTransformProperty);
this.ClearBinding(DecoratedElementTopProperty);
this.ClearBinding(DecoratedElementLeftProperty);
}
else
{
var decoratedCanvas = DecoratedElement.FindAncestor <Canvas>();
if (decoratedCanvas != null)
{
this.SetBinding(DecoratedCanvasTransformProperty, decoratedCanvas, RenderTransformProperty);
}
this.SetBinding(DecoratedElementTransformProperty, DecoratedElement, RenderTransformProperty);
this.SetBinding(DecoratedElementTopProperty, DecoratedElement, Canvas.TopProperty);
this.SetBinding(DecoratedElementLeftProperty, DecoratedElement, Canvas.LeftProperty);
}
}