/// <inheritdoc/>
public override IDisposable Apply(Animation animation, Animatable control, IClock clock, IObservable <bool> obsMatch, Action onComplete)
{
var ctrl = (Visual)control;
// Check if the Target Property is Transform derived.
if (typeof(Transform).IsAssignableFrom(Property.OwnerType))
{
if (ctrl.RenderTransform == null)
{
var normalTransform = new TransformGroup();
// Add the transforms according to MS Expression Blend's
// default RenderTransform order.
normalTransform.Children.Add(new ScaleTransform());
normalTransform.Children.Add(new SkewTransform());
normalTransform.Children.Add(new RotateTransform());
normalTransform.Children.Add(new TranslateTransform());
ctrl.RenderTransform = normalTransform;
}
var renderTransformType = ctrl.RenderTransform.GetType();
if (_doubleAnimator == null)
{
_doubleAnimator = new DoubleAnimator();
foreach (AnimatorKeyFrame keyframe in this)
{
_doubleAnimator.Add(keyframe);
}
_doubleAnimator.Property = Property;
}
// It's a transform object so let's target that.
if (renderTransformType == Property.OwnerType)
{
return(_doubleAnimator.Apply(animation, ctrl.RenderTransform, clock ?? control.Clock, obsMatch, onComplete));
}
// It's a TransformGroup and try finding the target there.
else if (renderTransformType == typeof(TransformGroup))
{
foreach (Transform transform in ((TransformGroup)ctrl.RenderTransform).Children)
{
if (transform.GetType() == Property.OwnerType)
{
return(_doubleAnimator.Apply(animation, transform, clock ?? control.Clock, obsMatch, onComplete));
}
}
}
Logger.Warning(
LogArea.Animations,
control,
$"Cannot find the appropriate transform: \"{Property.OwnerType}\" in {control}.");
}
else
{
Logger.Error(
LogArea.Animations,
control,
$"Cannot apply animation: Target property owner {Property.OwnerType} is not a Transform object.");
}
return(null);
}