@ExperimentalDeferredTransitionApi
public class MutableTransform(
internal var veilMatchParentSize: Boolean = false,
internal var offsetVelocityProvider: (() -> Offset)? = null,
internal var block: (TransformScope.(fullSize: IntSize) -> Unit)? = null,
)An object that allows manual manipulation of the visual transformations (alpha, scale, offset, etc.) of content during the deferred phase (initiated by DeferredTransitionState.defer) of a DeferredTransition (e.g., for predictive back gestures).
Manual transformations defined in this object are applied on top of the transition's initial state.
This object provides an invoke operator that accepts a TransformScope lambda. This lambda is evaluated repeatedly to ensure that state reads (e.g., from gesture progress) are deferred to the layout phase, preventing unnecessary composition churn while keeping Draw-phase operations performant.
Values set in this object are seamlessly handed off to the automatic transition animation when the deferred phase ends.
Parameters
| veilMatchParentSize | Whether the veil should match the size of the parent. |
| offsetVelocityProvider | The velocity of the offset change in pixels/sec. The offsetVelocityProvider lambda is evaluated exactly once when the deferred phase ends to ensure a seamless handoff to the automatic transition. |
| block | A lambda that applies transformations to the provided TransformScope. This block executes dynamically to reflect state changes. |
Functions
invoke
public operator fun invoke(block: TransformScope.(fullSize: IntSize) -> Unit)Define the manual transformation to apply during the deferred phase.
Parameters
| block | A lambda that applies transformations to the provided TransformScope. This block executes dynamically to reflect state changes. |
