public static void To(object target,
float duration,
KeyPaths properties,
object options,
EasingFormula easing,
Action onComplete)
{
CALayer layer;
if (TypeUtils.IsUIView(target))
{
layer = (target as UIView).Layer;
}
else
{
layer = target as CALayer;
}
// layer.RemoveAllAnimations(); // kill any previous animations hanging around
if (easing == null)
{
easing = Easing.EaseInSine;
}
var animations = new List <CAKeyFrameAnimation>();
var propType = properties.GetType();
foreach (var field in propType.GetFields(BindingFlags.Instance |
BindingFlags.NonPublic |
BindingFlags.Public))
{
if (field.GetValue(properties) != null)
{
var ka = new CAKeyFrameAnimation();
ka.KeyPath = LayerUtils.GetKeyPath(field.Name);
ka.BeginTime = 0;
ka.Duration = duration;
ka.TimingFunction = CAMediaTimingFunction.FromName(CAMediaTimingFunction.Linear);
var fromValue = LayerUtils.GetCurrentValue(layer, field.Name);
var toValue = Convert.ToSingle(field.GetValue(properties));
ka.Values = KeyFrameUtils.CreateKeyValues((float)fromValue, (float)toValue, easing);
if (TypeUtils.IsUIView(target))
{
setLayerProperties(layer, field.Name, toValue);
}
animations.Add(ka);
}
}
var localTime = CAAnimation.CurrentMediaTime();
var group = CAAnimationGroup.CreateAnimation();
group.BeginTime = localTime; // TODO + delay from options...
group.Duration = duration;
group.FillMode = CAFillMode.Forwards;
group.RemovedOnCompletion = false;
// group.AutoReverses = false;
// group.RepeatCount = 0;
if (onComplete != null)
{
group.AnimationStopped += (object sender, CAAnimationStateEventArgs e) => {
onComplete.Invoke();
};
}
group.Animations = animations.ToArray();
layer.AddAnimation(group, null);
}
public void CanGetKeyPathForProperty()
{
Assert.AreEqual("position.x", LayerUtils.GetKeyPath("PositionX"));
}