Package-level declarations
Types
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进入状态，表示页面即将进入，是Transform的开始
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从ResumeState到ExitState的中间态，用于手势过程，代表正在退出
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退出状态/结束状态；transform的结束
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类ios的Modal手势实现，在页面route时设置modal即可使用
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普通的默认手势实现，在页面route时设置normal即可使用
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显示状态
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从StopState到ResumeState的中间态,用于手势过程，代表正在暂停
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暂停状态；代表后一个页面已经显示了，当前界面已经变为前一个页面，该页面暂停
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class TransformBuilder
变换构造类，用于构造Transform
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描述界面变换的状态，以及进度。需要注意的是TransformState类簇仅描述界面变换，不代表页面生命周期。
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变换包裹层，在这里可以同时控制当前页面和前一个页面的变化。
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class TransformWrapScope
手势包裹层的作用域，该类主要是管理一些工作，比如：让页面内容也可以控制页面的手势
Functions
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fun TransformState.between(resume: Offset, exit: Offset, enter: Offset = exit, pause: Offset = resume): Offset
fun TransformState.between(resume: Rect, exit: Rect, enter: Rect = exit, pause: Rect = resume): Rect
fun TransformState.between(resume: Size, exit: Size, enter: Size = exit, pause: Size = resume): Size
fun TransformState.between(resume: Color, exit: Color, enter: Color = exit, pause: Color = resume): Color
fun TransformState.between(resume: DpOffset, exit: DpOffset, enter: DpOffset = exit, pause: DpOffset = resume): DpOffset
fun TransformState.between(resume: DpSize, exit: DpSize, enter: DpSize = exit, pause: DpSize = resume): DpSize
fun TransformState.between(resume: IntOffset, exit: IntOffset, enter: IntOffset = exit, pause: IntOffset = resume): IntOffset
fun TransformState.between(resume: IntSize, exit: IntSize, enter: IntSize = exit, pause: IntSize = resume): IntSize
fun TransformState.between(resume: Float, exit: Float, enter: Float = exit, pause: Float = resume): Float
该方法用于计算页面状态变化时各种数值的流转变化
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transform构造方法
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fun expandHorizontally(animationSpec: FiniteAnimationSpec<IntSize> = spring(
stiffness = Spring.StiffnessMediumLow,
visibilityThreshold = IntSize.VisibilityThreshold
), expandFrom: Alignment.Horizontal = Alignment.End, clip: Boolean = true, initialWidth: (fullWidth: Int) -> Int = { 0 }): EnterTransition
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fun expandIn(animationSpec: FiniteAnimationSpec<IntSize> = spring(
stiffness = Spring.StiffnessMediumLow,
visibilityThreshold = IntSize.VisibilityThreshold
), expandFrom: Alignment = Alignment.BottomEnd, clip: Boolean = true, initialSize: (fullSize: IntSize) -> IntSize = { IntSize(0, 0) }): EnterTransition
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fun expandVertically(animationSpec: FiniteAnimationSpec<IntSize> = spring(
stiffness = Spring.StiffnessMediumLow,
visibilityThreshold = IntSize.VisibilityThreshold
), expandFrom: Alignment.Vertical = Alignment.Bottom, clip: Boolean = true, initialHeight: (fullHeight: Int) -> Int = { 0 }): EnterTransition
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fun fadeIn(animationSpec: FiniteAnimationSpec<Float> = spring(stiffness = Spring.StiffnessMediumLow), initialOffset: Float = 0.0f): EnterTransition
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fun fadeOut(animationSpec: FiniteAnimationSpec<Float> = spring(stiffness = Spring.StiffnessMediumLow), targetAlpha: Float = 0.0f): ExitTransition
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普通的页面过渡动画，主要为：页面从右到左进入，上一个页面也是从右到左进入到栈内，但是幅度较小，支持从左到右滑动手势退出。
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fun <T : Any> rememberAnchoredDraggableState(any: Any, initialValue: T, anchors: DraggableAnchors<T>, animationSpec: AnimationSpec<Float> = spring(), positionalThreshold: (distance: Float) -> Float = { it * 0.5f }, velocityThreshold: () -> Float = { 10f }, confirmValueChange: (T) -> Boolean = { true }): AnchoredDraggableState<T>
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fun rememberDraggableModifier(orientation: Orientation = Orientation.Horizontal, reverseDirection: Boolean = false): Modifier
由拖拽手势生成的两个modifier，具体可参考ModalTransformWrap和NormalTransformWrap 该方法有一定的局限性，如果需要不同的手势操作请自行实现
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fun rememberDraggableState(orientation: Orientation = Orientation.Horizontal): AnchoredDraggableState<Float>
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获取变换的transition
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fun scaleIn(animationSpec: FiniteAnimationSpec<Float> = spring(stiffness = Spring.StiffnessMediumLow), initialScale: Float = 0.0f, transformOrigin: TransformOrigin = TransformOrigin.Center): EnterTransition
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fun scaleOut(animationSpec: FiniteAnimationSpec<Float> = spring(stiffness = Spring.StiffnessMediumLow), targetScale: Float = 0.0f, transformOrigin: TransformOrigin = TransformOrigin.Center): ExitTransition
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fun share(vararg keys: Any, animationSpec: FiniteAnimationSpec<Float> = spring(stiffness = Spring.StiffnessMediumLow), shareAnimationSpec: FiniteAnimationSpec<Rect> = spring(visibilityThreshold = Rect.VisibilityThreshold), gesture: SimpleGesture = normalSimpleGesture): Transform
共享元素，当需要使用共享元素动画时，需要使用该transform
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是否应该有手势
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fun shrinkHorizontally(animationSpec: FiniteAnimationSpec<IntSize> = spring(
stiffness = Spring.StiffnessMediumLow,
visibilityThreshold = IntSize.VisibilityThreshold
), shrinkTowards: Alignment.Horizontal = Alignment.End, clip: Boolean = true, targetWidth: (fullWidth: Int) -> Int = { 0 }): ExitTransition
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fun shrinkOut(animationSpec: FiniteAnimationSpec<IntSize> = spring(
stiffness = Spring.StiffnessMediumLow,
visibilityThreshold = IntSize.VisibilityThreshold
), shrinkTowards: Alignment = Alignment.BottomEnd, clip: Boolean = true, targetSize: (fullSize: IntSize) -> IntSize = { IntSize(0, 0) }): ExitTransition
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fun shrinkVertically(animationSpec: FiniteAnimationSpec<IntSize> = spring(
stiffness = Spring.StiffnessMediumLow,
visibilityThreshold = IntSize.VisibilityThreshold
), shrinkTowards: Alignment.Vertical = Alignment.Bottom, clip: Boolean = true, targetHeight: (fullHeight: Int) -> Int = { 0 }): ExitTransition
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fun slideIn(animationSpec: FiniteAnimationSpec<IntOffset> = spring(
stiffness = Spring.StiffnessMediumLow,
visibilityThreshold = IntOffset.VisibilityThreshold
), initialOffset: (fullSize: IntSize) -> IntOffset): EnterTransition
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fun slideInHorizontally(animationSpec: FiniteAnimationSpec<IntOffset> = spring(
stiffness = Spring.StiffnessMediumLow,
visibilityThreshold = IntOffset.VisibilityThreshold
), initialOffsetX: (fullWidth: Int) -> Int = { -it / 2 }): EnterTransition
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fun slideInVertically(animationSpec: FiniteAnimationSpec<IntOffset> = spring(
stiffness = Spring.StiffnessMediumLow,
visibilityThreshold = IntOffset.VisibilityThreshold
), initialOffsetY: (fullHeight: Int) -> Int = { -it / 2 }): EnterTransition
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fun slideOut(animationSpec: FiniteAnimationSpec<IntOffset> = spring(
stiffness = Spring.StiffnessMediumLow,
visibilityThreshold = IntOffset.VisibilityThreshold
), targetOffset: (fullSize: IntSize) -> IntOffset): ExitTransition
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fun slideOutHorizontally(animationSpec: FiniteAnimationSpec<IntOffset> = spring(
stiffness = Spring.StiffnessMediumLow,
visibilityThreshold = IntOffset.VisibilityThreshold
), targetOffsetX: (fullWidth: Int) -> Int = { -it / 2 }): ExitTransition
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fun slideOutVertically(animationSpec: FiniteAnimationSpec<IntOffset> = spring(
stiffness = Spring.StiffnessMediumLow,
visibilityThreshold = IntOffset.VisibilityThreshold
), targetOffsetY: (fullHeight: Int) -> Int = { -it / 2 }): ExitTransition
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更新手势进度