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 android.util.MathUtils 20 import com.android.systemui.dagger.SysUISingleton 21 import com.android.systemui.deviceentry.domain.interactor.DeviceEntryUdfpsInteractor 22 import com.android.systemui.keyguard.domain.interactor.FromAlternateBouncerTransitionInteractor 23 import com.android.systemui.keyguard.shared.model.Edge 24 import com.android.systemui.keyguard.shared.model.KeyguardState.ALTERNATE_BOUNCER 25 import com.android.systemui.keyguard.shared.model.KeyguardState.AOD 26 import com.android.systemui.keyguard.ui.KeyguardTransitionAnimationFlow 27 import com.android.systemui.keyguard.ui.transitions.DeviceEntryIconTransition 28 import javax.inject.Inject 29 import kotlinx.coroutines.flow.Flow 30 import kotlinx.coroutines.flow.flatMapLatest 31 32 /** 33 * Breaks down ALTERNATE BOUNCER->AOD transition into discrete steps for corresponding views to 34 * consume. 35 */ 36 @SysUISingleton 37 class AlternateBouncerToAodTransitionViewModel 38 @Inject 39 constructor( 40 deviceEntryUdfpsInteractor: DeviceEntryUdfpsInteractor, 41 animationFlow: KeyguardTransitionAnimationFlow, 42 ) : DeviceEntryIconTransition { 43 private val transitionAnimation = 44 animationFlow.setup( 45 duration = FromAlternateBouncerTransitionInteractor.TO_AOD_DURATION, 46 edge = Edge.create(from = ALTERNATE_BOUNCER, to = AOD), 47 ) 48 49 fun lockscreenAlpha(viewState: ViewStateAccessor): Flow<Float> { 50 var startAlpha = 1f 51 return transitionAnimation.sharedFlow( 52 duration = FromAlternateBouncerTransitionInteractor.TO_AOD_DURATION, 53 onStart = { startAlpha = viewState.alpha() }, 54 onStep = { MathUtils.lerp(startAlpha, 1f, it) }, 55 ) 56 } 57 58 val deviceEntryBackgroundViewAlpha: Flow<Float> = 59 transitionAnimation.sharedFlow( 60 duration = FromAlternateBouncerTransitionInteractor.TO_AOD_DURATION, 61 onStep = { 1 - it }, 62 onCancel = { 0f }, 63 onFinish = { 0f }, 64 ) 65 66 override val deviceEntryParentViewAlpha: Flow<Float> = 67 deviceEntryUdfpsInteractor.isUdfpsEnrolledAndEnabled.flatMapLatest { udfpsEnrolledAndEnabled 68 -> 69 if (udfpsEnrolledAndEnabled) { 70 transitionAnimation.immediatelyTransitionTo(1f) 71 } else { 72 transitionAnimation.immediatelyTransitionTo(0f) 73 } 74 } 75 } 76