| /* |
| * Copyright 2021 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.tv.foundation.lazy.list |
| |
| import androidx.compose.animation.core.FiniteAnimationSpec |
| import androidx.compose.foundation.ExperimentalFoundationApi |
| import androidx.compose.foundation.layout.height |
| import androidx.compose.foundation.layout.size |
| import androidx.compose.foundation.layout.width |
| import androidx.compose.runtime.getValue |
| import androidx.compose.runtime.mutableStateOf |
| import androidx.compose.runtime.setValue |
| import androidx.compose.ui.Modifier |
| import androidx.compose.ui.layout.ParentDataModifier |
| import androidx.compose.ui.platform.InspectorInfo |
| import androidx.compose.ui.platform.InspectorValueInfo |
| import androidx.compose.ui.platform.debugInspectorInfo |
| import androidx.compose.ui.unit.Density |
| import androidx.compose.ui.unit.Dp |
| import androidx.compose.ui.unit.IntOffset |
| |
| internal class TvLazyListItemScopeImpl : TvLazyListItemScope { |
| |
| var maxWidth: Dp by mutableStateOf(Dp.Unspecified) |
| var maxHeight: Dp by mutableStateOf(Dp.Unspecified) |
| |
| override fun Modifier.fillParentMaxSize(fraction: Float) = size( |
| maxWidth * fraction, |
| maxHeight * fraction |
| ) |
| |
| override fun Modifier.fillParentMaxWidth(fraction: Float) = |
| width(maxWidth * fraction) |
| |
| override fun Modifier.fillParentMaxHeight(fraction: Float) = |
| height(maxHeight * fraction) |
| |
| @Suppress("IllegalExperimentalApiUsage") // TODO(b/233188423): Address before moving to beta |
| @ExperimentalFoundationApi |
| override fun Modifier.animateItemPlacement(animationSpec: FiniteAnimationSpec<IntOffset>) = |
| this.then(AnimateItemPlacementModifier(animationSpec, debugInspectorInfo { |
| name = "animateItemPlacement" |
| value = animationSpec |
| })) |
| } |
| |
| private class AnimateItemPlacementModifier( |
| val animationSpec: FiniteAnimationSpec<IntOffset>, |
| inspectorInfo: InspectorInfo.() -> Unit, |
| ) : ParentDataModifier, InspectorValueInfo(inspectorInfo) { |
| override fun Density.modifyParentData(parentData: Any?): Any = animationSpec |
| |
| override fun equals(other: Any?): Boolean { |
| if (this === other) return true |
| if (other !is AnimateItemPlacementModifier) return false |
| return animationSpec != other.animationSpec |
| } |
| |
| override fun hashCode(): Int { |
| return animationSpec.hashCode() |
| } |
| } |