public AnimationLayerCollection()
{
defaultLayer = new AnimationLayer();
defaultLayer.ClockInvalidated += OnAnimationLayerClockInvalidated;
layers = new Dictionary<AnimationLayerKey, AnimationLayer>();
}
internal static void ApplyAnimationClocksToLayer(
DependencyObject d,
DependencyProperty dp,
IList<AnimationClock> animationClocks,
HandoffBehavior handoffBehavior,
Int64 propertyTriggerLayerIndex)
{
if( propertyTriggerLayerIndex == 1 )
{
// Layer 1 is a special layer, where it gets treated as if there
// was no layer specification at all.
ApplyAnimationClocks( d, dp, animationClocks, handoffBehavior );
return;
}
Debug.Assert(animationClocks != null);
Debug.Assert(!animationClocks.Contains(null));
Debug.Assert(HandoffBehaviorEnum.IsDefined(handoffBehavior),
"Public API caller of this internal method is responsible for validating that the HandoffBehavior value is valid.");
AnimationStorage storage = GetStorage(d, dp);
if (storage == null)
{
storage = CreateStorage(d, dp);
}
SortedList<Int64, AnimationLayer> propertyTriggerLayers = storage._propertyTriggerLayers;
if (propertyTriggerLayers == null)
{
propertyTriggerLayers = new SortedList<Int64, AnimationLayer>(1);
storage._propertyTriggerLayers = propertyTriggerLayers;
}
AnimationLayer layer;
if (propertyTriggerLayers.ContainsKey(propertyTriggerLayerIndex))
{
layer = propertyTriggerLayers[propertyTriggerLayerIndex];
}
else
{
layer = new AnimationLayer(storage);
propertyTriggerLayers[propertyTriggerLayerIndex] = layer;
}
object defaultDestinationValue = DependencyProperty.UnsetValue;
if (handoffBehavior == HandoffBehavior.SnapshotAndReplace)
{
//
defaultDestinationValue = ((IAnimatable)d).GetAnimationBaseValue(dp);
int count = propertyTriggerLayers.Count;
if (count > 1)
{
IList<Int64> keys = propertyTriggerLayers.Keys;
for (int i = 0; i < count && keys[i] < propertyTriggerLayerIndex; i++)
{
AnimationLayer currentLayer;
propertyTriggerLayers.TryGetValue(keys[i], out currentLayer);
defaultDestinationValue = currentLayer.GetCurrentValue(defaultDestinationValue);
}
}
}
layer.ApplyAnimationClocks(
animationClocks,
handoffBehavior,
defaultDestinationValue);
storage.WritePostscript();
}
/// <summary>
///
/// </summary>
/// <param name="layer"></param>
internal void RemoveLayer(AnimationLayer layer)
{
Debug.Assert(_propertyTriggerLayers != null);
Debug.Assert(_propertyTriggerLayers.ContainsValue(layer));
int index = _propertyTriggerLayers.IndexOfValue(layer);
Debug.Assert(index >= 0);
_propertyTriggerLayers.RemoveAt(index);
if (_propertyTriggerLayers.Count == 0)
{
_propertyTriggerLayers = null;
}
}
internal static void ApplyAnimationClocksToLayer(
DependencyObject d,
DependencyProperty dp,
IList <AnimationClock> animationClocks,
HandoffBehavior handoffBehavior,
Int64 propertyTriggerLayerIndex)
{
if (propertyTriggerLayerIndex == 1)
{
// Layer 1 is a special layer, where it gets treated as if there
// was no layer specification at all.
ApplyAnimationClocks(d, dp, animationClocks, handoffBehavior);
return;
}
Debug.Assert(animationClocks != null);
Debug.Assert(!animationClocks.Contains(null));
Debug.Assert(HandoffBehaviorEnum.IsDefined(handoffBehavior),
"Public API caller of this internal method is responsible for validating that the HandoffBehavior value is valid.");
AnimationStorage storage = GetStorage(d, dp);
if (storage == null)
{
storage = CreateStorage(d, dp);
}
SortedList <Int64, AnimationLayer> propertyTriggerLayers = storage._propertyTriggerLayers;
if (propertyTriggerLayers == null)
{
propertyTriggerLayers = new SortedList <Int64, AnimationLayer>(1);
storage._propertyTriggerLayers = propertyTriggerLayers;
}
AnimationLayer layer;
if (propertyTriggerLayers.ContainsKey(propertyTriggerLayerIndex))
{
layer = propertyTriggerLayers[propertyTriggerLayerIndex];
}
else
{
layer = new AnimationLayer(storage);
propertyTriggerLayers[propertyTriggerLayerIndex] = layer;
}
object defaultDestinationValue = DependencyProperty.UnsetValue;
if (handoffBehavior == HandoffBehavior.SnapshotAndReplace)
{
//
defaultDestinationValue = ((IAnimatable)d).GetAnimationBaseValue(dp);
int count = propertyTriggerLayers.Count;
if (count > 1)
{
IList <Int64> keys = propertyTriggerLayers.Keys;
for (int i = 0; i < count && keys[i] < propertyTriggerLayerIndex; i++)
{
AnimationLayer currentLayer;
propertyTriggerLayers.TryGetValue(keys[i], out currentLayer);
defaultDestinationValue = currentLayer.GetCurrentValue(defaultDestinationValue);
}
}
}
layer.ApplyAnimationClocks(
animationClocks,
handoffBehavior,
defaultDestinationValue);
storage.WritePostscript();
}
private AnimationLayer GetAnimationLayer(AnimationLayerKey key)
{
if (key == AnimationLayerKey.Default)
{
return defaultLayer;
}
AnimationLayer layer;
if (!layers.TryGetValue(key, out layer))
{
layer = new AnimationLayer();
layer.ClockInvalidated += OnAnimationLayerClockInvalidated;
layers.Add(key, layer);
}
return layer;
}