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commandironcommandiron
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AnimatableLazyColumn.kt
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+180
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‎animatable-compose/src/main/java/com/commandiron/animatable_compose/AnimatableLazyColumn.kt‎

Lines changed: 141 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,141 @@
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package com.commandiron.animatable_compose
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import androidx.compose.foundation.gestures.FlingBehavior
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import androidx.compose.foundation.gestures.ScrollableDefaults
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import androidx.compose.foundation.layout.*
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import androidx.compose.foundation.lazy.LazyColumn
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import androidx.compose.foundation.lazy.LazyListScope
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import androidx.compose.foundation.lazy.LazyListState
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import androidx.compose.foundation.lazy.rememberLazyListState
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import androidx.compose.runtime.Composable
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import androidx.compose.ui.Alignment
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import androidx.compose.ui.Modifier
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import androidx.compose.ui.unit.Dp
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import androidx.compose.ui.unit.DpOffset
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import androidx.compose.ui.unit.DpSize
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import androidx.compose.ui.unit.dp
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import com.commandiron.animatable_compose.state.AnimatableState
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import com.commandiron.animatable_compose.state.AnimatableStateTag
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import com.commandiron.animatable_compose.state.SharedAnimatableState
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@Composable
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fun AnimatableLazyColumn(
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modifier: Modifier = Modifier,
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lazyListState: LazyListState = rememberLazyListState(),
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contentPadding: PaddingValues = PaddingValues(0.dp),
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reverseLayout: Boolean = false,
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verticalArrangement: Arrangement.Vertical =
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if (!reverseLayout) Arrangement.Top else Arrangement.Bottom,
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horizontalAlignment: Alignment.Horizontal = Alignment.Start,
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flingBehavior: FlingBehavior = ScrollableDefaults.flingBehavior(),
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userScrollEnabled: Boolean = true,
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state: AnimatableState,
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fixedWidth: Dp = Dp.Unspecified,
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fixedHeight: Dp = Dp.Unspecified,
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fixedOffset: DpOffset = DpOffset.Unspecified,
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content: LazyListScope.() -> Unit
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) {
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LazyColumn(
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modifier = Modifier
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.width(
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when (fixedWidth) {
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Dp.Unspecified -> if (state.animatedSize == DpSize.Unspecified) {
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Dp.Unspecified
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} else state.animatedSize.width
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Dp.Infinity -> state.screenWidth
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else -> fixedWidth
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}
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)
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.height(
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when (fixedHeight) {
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Dp.Unspecified -> if (state.animatedSize == DpSize.Unspecified) {
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Dp.Unspecified
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} else state.animatedSize.height
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Dp.Infinity -> state.screenHeight
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else -> fixedHeight
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}
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)
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.offset(
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x = when (fixedOffset) {
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DpOffset.Unspecified -> state.animatedOffset.x
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else -> fixedOffset.x
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},
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y = when (fixedOffset) {
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DpOffset.Unspecified -> state.animatedOffset.y
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else -> fixedOffset.y
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}
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)
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.then(modifier),
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state = lazyListState,
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contentPadding = contentPadding,
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reverseLayout = reverseLayout,
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verticalArrangement = verticalArrangement,
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horizontalAlignment = horizontalAlignment,
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flingBehavior = flingBehavior,
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userScrollEnabled = userScrollEnabled,
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content = content
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)
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}
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@Composable
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fun AnimatableLazyColumn(
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modifier: Modifier = Modifier,
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lazyListState: LazyListState = rememberLazyListState(),
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contentPadding: PaddingValues = PaddingValues(0.dp),
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reverseLayout: Boolean = false,
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verticalArrangement: Arrangement.Vertical =
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if (!reverseLayout) Arrangement.Top else Arrangement.Bottom,
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horizontalAlignment: Alignment.Horizontal = Alignment.Start,
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flingBehavior: FlingBehavior = ScrollableDefaults.flingBehavior(),
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userScrollEnabled: Boolean = true,
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state: SharedAnimatableState,
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stateIndex: Int = 0,
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fixedWidth: Dp = Dp.Unspecified,
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fixedHeight: Dp = Dp.Unspecified,
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fixedOffset: DpOffset = DpOffset.Unspecified,
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content: LazyListScope.() -> Unit
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) {
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val stateIn = state.getState(AnimatableStateTag.LAZY_COLUMN, stateIndex) ?: throw (
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IllegalArgumentException("no animatableState has this index: $stateIndex")
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)
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LazyColumn(
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modifier = Modifier
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.width(
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when (fixedWidth) {
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Dp.Unspecified -> if (stateIn.animatedSize == DpSize.Unspecified) {
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Dp.Unspecified
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} else stateIn.animatedSize.width
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Dp.Infinity -> stateIn.screenWidth
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else -> fixedWidth
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}
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)
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.height(
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when (fixedHeight) {
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Dp.Unspecified -> if (stateIn.animatedSize == DpSize.Unspecified) {
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Dp.Unspecified
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} else stateIn.animatedSize.height
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Dp.Infinity -> stateIn.screenHeight
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else -> fixedHeight
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}
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)
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.offset(
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x = when (fixedOffset) {
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DpOffset.Unspecified -> stateIn.animatedOffset.x
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else -> fixedOffset.x
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},
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y = when (fixedOffset) {
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DpOffset.Unspecified -> stateIn.animatedOffset.y
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else -> fixedOffset.y
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}
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)
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.then(modifier),
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state = lazyListState,
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contentPadding = contentPadding,
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reverseLayout = reverseLayout,
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verticalArrangement = verticalArrangement,
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horizontalAlignment = horizontalAlignment,
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flingBehavior = flingBehavior,
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userScrollEnabled = userScrollEnabled,
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content = content
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)
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}

‎animatable-compose/src/main/java/com/commandiron/animatable_compose/state/AnimatableState.kt‎

Lines changed: 39 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -907,7 +907,7 @@ enum class AnimationState {
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}
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enum class AnimatableStateTag {
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SPACER, TEXT, BOX, CARD, ICON, LAZY_ROW,
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SPACER, TEXT, BOX, CARD, ICON, LAZY_ROW, LAZY_COLUMN,
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}
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@Composable
@@ -1200,4 +1200,42 @@ fun rememberAnimatableLazyRowState(
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onAnimation = onAnimation
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)
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}
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}
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@Composable
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fun rememberAnimatableLazyColumnState(
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index: Int = 0,
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initialSize: DpSize? = null,
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targetSize: DpSize? = null,
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toTargetSizeAnimationSpec: AnimationSpec<Size>? = null,
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toInitialSizeAnimationSpec: AnimationSpec<Size>? = null,
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onSizeAnimation: (AnimationState) -> Unit = {},
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initialOffset: DpOffset? = null,
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targetOffset: DpOffset? = null,
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toTargetOffsetAnimationSpec: AnimationSpec<Size>? = null,
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toInitialOffsetAnimationSpec: AnimationSpec<Size>? = null,
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onOffsetAnimation: (AnimationState) -> Unit = {},
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toTargetAnimationSpec: AnimationSpec<Float>? = tween(500),
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toInitialAnimationSpec: AnimationSpec<Float>? = tween(500),
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onAnimation: (AnimationState) -> Unit = {}
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): AnimatableState {
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return remember {
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AnimatableState(
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animatableStateTag = AnimatableStateTag.LAZY_COLUMN,
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index = index,
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initialSize = initialSize,
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targetSize = targetSize,
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toTargetSizeAnimationSpec = toTargetSizeAnimationSpec,
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toInitialSizeAnimationSpec = toInitialSizeAnimationSpec,
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onSizeAnimation = onSizeAnimation,
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initialOffset = initialOffset,
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targetOffset = targetOffset,
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toTargetOffsetAnimationSpec = toTargetOffsetAnimationSpec,
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toInitialOffsetAnimationSpec = toInitialOffsetAnimationSpec,
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onOffsetAnimation = onOffsetAnimation,
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toTargetAnimationSpec = toTargetAnimationSpec,
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toInitialAnimationSpec = toInitialAnimationSpec,
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onAnimation = onAnimation
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)
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}
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}

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