MotionLayoutScope

fun customColor(id: String, name: String): Color

Return the current Color value of the custom property name, of the id layout.

Returns Color.Unspecified if the property does not exist.

This is a short version of: customProperties(id).color(name).

fun customDistance(id: String, name: String): Dp

Return the current Dp value of the custom property name, of the id layout.

Returns Dp.Unspecified if the property does not exist.

This is a short version of: customProperties(id).distance(name).

fun customFloat(id: String, name: String): Float

Return the current Color value of the custom property name, of the id layout.

Returns Color.Unspecified if the property does not exist.

This is a short version of: customProperties(id).float(name).

fun customFontSize(id: String, name: String): TextUnit

Return the current TextUnit value of the custom property name, of the id layout.

Returns TextUnit.Unspecified if the property does not exist.

This is a short version of: customProperties(id).fontSize(name).

fun customInt(id: String, name: String): Int

Return the current Int value of the custom property name, of the id layout.

Returns 0 if the property does not exist.

This is a short version of: customProperties(id).int(name).

fun customProperties(id: String): MotionLayoutScope.CustomProperties

Returns a CustomProperties instance to access the values of custom properties defined for id in different return types: Color, Float, Int, Dp, TextUnit.

Note that there are no type guarantees when setting or getting custom properties, so be mindful of the value type used for it in the MotionScene.

fun Modifier.onStartEndBoundsChanged(
    layoutId: Any,
    onBoundsChanged: (startBounds: Rect, endBounds: Rect) -> Unit
): Modifier

Invokes onBoundsChanged whenever the Start or End bounds may have changed for the Composable corresponding to the given layoutId during positioning. This may happen if the current Transition for MotionLayout changes.

onBoundsChanged will be invoked at least once when the content is placed the first time.

Use this Modifier instead of onGloballyPositioned if you wish to keep track of Composable bounds while ignoring their positioning during animation. Such as when implementing DragAndDrop logic.