layer library

Classes

EmojiLayer: A class representing a layer with emoji content.
Layer: Represents a layer with common properties for widgets.
LayerAnimation: A single animation applied to a Layer on the video timeline.
LayerKeyframe: A layer's placement at one point of its time range.
LayerKeyframeEffect: A loop animation a layer plays between two of its keyframes, see LayerKeyframe.effects.
LayerPlacement: Where a layer sits, how big it is, how far it is turned and how opaque it is at one moment, measured like Layer.offset, Layer.scale, Layer.rotation and Layer.opacity.
PaintLayer: A class representing a layer with custom paint content.
TextHighlight: A part of a TextLayer's text that is highlighted while the video plays through it, such as the word of a caption that is being spoken.
TextLayer: Represents a text layer with customizable properties.
WidgetLayer: A class representing a layer with custom widget content.
WidgetLayerExportConfigs: A class that represents the export configurations for a widget layer.

AnimationCurve: Easing curve for animation timing.
AnimationPhase: Whether the animation plays at the start, end, or both ends of the layer's time range, or repeats throughout it.
LayerAnimationType: The type of animation to apply to a Layer.
SlideDirection: Slide direction for slide animations.

kDefaultTextHighlightColor → const Color: The TextLayer.highlightColor a layer gets when none is given: a warm yellow that reads on light and dark text alike.
kLayerKeyframeTolerance → const Duration: How far apart a playback position and a keyframe may be for the keyframe to count as at that position.

layerKeyframeEffects(List<LayerKeyframe> keyframes, {required Duration origin}) → List<LayerKeyframeEffect>: The LayerKeyframe.effects of keyframes, each placed on the stretch to the next keyframe with its cycle fitted to it.
layerKeyframePlacementAt(List<LayerKeyframe> keyframes, Duration time) → LayerPlacement?: The placement keyframes give a layer time after the time they are measured from (see LayerKeyframe.time), or null when there are none.
sortLayerKeyframes(Iterable<LayerKeyframe> keyframes) → List<LayerKeyframe>: keyframes sorted by LayerKeyframe.time, as a new list.

LayerTimelineTransitionBuilder = Widget Function(Widget child, Animation<double> animation): Signature for a builder that wraps a layer widget with an animated transition driven by animation.