1 /* <lambda>null2 * Copyright (C) 2023 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.systemui.keyguard.ui.viewmodel 18 19 import com.android.systemui.dagger.SysUISingleton 20 import com.android.systemui.deviceentry.domain.interactor.DeviceEntryUdfpsInteractor 21 import com.android.systemui.keyguard.domain.interactor.FromOccludedTransitionInteractor 22 import com.android.systemui.keyguard.shared.model.Edge 23 import com.android.systemui.keyguard.shared.model.KeyguardState.AOD 24 import com.android.systemui.keyguard.shared.model.KeyguardState.OCCLUDED 25 import com.android.systemui.keyguard.ui.KeyguardTransitionAnimationFlow 26 import com.android.systemui.keyguard.ui.transitions.DeviceEntryIconTransition 27 import javax.inject.Inject 28 import kotlin.time.Duration.Companion.milliseconds 29 import kotlinx.coroutines.flow.Flow 30 import kotlinx.coroutines.flow.emptyFlow 31 import kotlinx.coroutines.flow.flatMapLatest 32 33 /** Breaks down OCCLUDED->AOD transition into discrete steps for corresponding views to consume. */ 34 @SysUISingleton 35 class OccludedToAodTransitionViewModel 36 @Inject 37 constructor( 38 deviceEntryUdfpsInteractor: DeviceEntryUdfpsInteractor, 39 animationFlow: KeyguardTransitionAnimationFlow, 40 ) : DeviceEntryIconTransition { 41 private val transitionAnimation = 42 animationFlow.setup( 43 duration = FromOccludedTransitionInteractor.TO_AOD_DURATION, 44 edge = Edge.create(from = OCCLUDED, to = AOD), 45 ) 46 47 val deviceEntryBackgroundViewAlpha: Flow<Float> = 48 transitionAnimation.immediatelyTransitionTo(0f) 49 50 /** Lockscreen views alpha */ 51 val lockscreenAlpha: Flow<Float> = 52 transitionAnimation.sharedFlow( 53 startTime = 233.milliseconds, 54 duration = 250.milliseconds, 55 onStep = { it }, 56 ) 57 58 override val deviceEntryParentViewAlpha: Flow<Float> = 59 deviceEntryUdfpsInteractor.isUdfpsEnrolledAndEnabled.flatMapLatest { udfpsEnrolledAndEnabled 60 -> 61 if (udfpsEnrolledAndEnabled) { 62 transitionAnimation.immediatelyTransitionTo(1f) 63 } else { 64 emptyFlow() 65 } 66 } 67 } 68