ZoomState

class ZoomState(@FloatRange(from = 1.0) maxScale: Float = 5.0f, contentSize: Size = Size.Zero, velocityDecay: DecayAnimationSpec<Float> = exponentialDecay())

A state object that manage scale and offset.

maxScale

The maximum scale of the content.

contentSize

Size of content (i.e. image size.) If Zero, the composable layout size will be used as content size.

velocityDecay

The decay animation spec for fling behaviour.

Constructors

constructor(@FloatRange(from = 1.0) maxScale: Float = 5.0f, contentSize: Size = Size.Zero, velocityDecay: DecayAnimationSpec<Float> = exponentialDecay())

The horizontal offset of the content.

The vertical offset of the content.

The scale of the content.

suspend fun centerByContentCoordinate(offset: Offset, scale: Float = 3.0f, animationSpec: AnimationSpec<Float> = tween(700))

Animates the centering of content by modifying the offset and scale based on content coordinates.

suspend fun centerByLayoutCoordinate(offset: Offset, scale: Float = 3.0f, animationSpec: AnimationSpec<Float> = tween(700))

Animates the centering of content by modifying the offset and scale based on layout coordinates.

suspend fun changeScale(targetScale: Float, position: Offset, animationSpec: AnimationSpec<Float> = spring()): Job

Change the scale with animation.

suspend fun reset(): Job

Reset the scale and the offsets.

Set the content size.

Set composable layout size.

suspend fun ZoomState.toggleScale(targetScale: Float, position: Offset, animationSpec: AnimationSpec<Float> = spring())

Toggle the scale between targetScale and 1.0f.