LazyListMeasureResult.kt
/*
* Copyright 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.compose.foundation.lazy
/**
* The result of the measure pass for lazy list layout.
*/
internal class LazyListMeasureResult(
/** Calculated size for the main axis.*/
val mainAxisSize: Int,
/** Calculated size for the cross axis.*/
val crossAxisSize: Int,
/** The list of items to be placed during the layout pass.*/
val items: List<LazyMeasuredItem>,
/** The main axis offset to be used for the first item in the [items] list.*/
val itemsScrollOffset: Int,
/** The new value for [LazyListState.firstVisibleItemIndex].*/
val firstVisibleItemIndex: DataIndex,
/** The new value for [LazyListState.firstVisibleItemScrollOffset].*/
val firstVisibleItemScrollOffset: Int,
/** True if there is some space available to continue scrolling in the forward direction.*/
val canScrollForward: Boolean,
/** The amount of scroll consumed during the measure pass.*/
val consumedScroll: Float,
/** The composed MeasuredItem which we are not going to place as they are out of screen.*/
val notUsedButComposedItems: MutableList<LazyMeasuredItem>?,
override val viewportStartOffset: Int,
override val viewportEndOffset: Int,
override val totalItemsCount: Int
) : LazyListLayoutInfo {
override val visibleItemsInfo: List<LazyListItemInfo> get() = items
}