1 /*
<lambda>null2  * Copyright (C) 2024 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.FromAlternateBouncerTransitionInteractor
22 import com.android.systemui.keyguard.shared.model.Edge
23 import com.android.systemui.keyguard.shared.model.KeyguardState.ALTERNATE_BOUNCER
24 import com.android.systemui.keyguard.shared.model.KeyguardState.DOZING
25 import com.android.systemui.keyguard.ui.KeyguardTransitionAnimationFlow
26 import com.android.systemui.keyguard.ui.transitions.DeviceEntryIconTransition
27 import javax.inject.Inject
28 import kotlinx.coroutines.ExperimentalCoroutinesApi
29 import kotlinx.coroutines.flow.Flow
30 import kotlinx.coroutines.flow.flatMapLatest
31 
32 /**
33  * Breaks down ALTERNATE BOUNCER->DOZING transition into discrete steps for corresponding views to
34  * consume.
35  */
36 @ExperimentalCoroutinesApi
37 @SysUISingleton
38 class AlternateBouncerToDozingTransitionViewModel
39 @Inject
40 constructor(
41     deviceEntryUdfpsInteractor: DeviceEntryUdfpsInteractor,
42     animationFlow: KeyguardTransitionAnimationFlow,
43 ) : DeviceEntryIconTransition {
44     private val transitionAnimation =
45         animationFlow.setup(
46             duration = FromAlternateBouncerTransitionInteractor.TO_DOZING_DURATION,
47             edge = Edge.create(from = ALTERNATE_BOUNCER, to = DOZING),
48         )
49 
50     val deviceEntryBackgroundViewAlpha: Flow<Float> =
51         transitionAnimation.immediatelyTransitionTo(0f)
52 
53     override val deviceEntryParentViewAlpha: Flow<Float> =
54         deviceEntryUdfpsInteractor.isUdfpsEnrolledAndEnabled.flatMapLatest { udfpsEnrolledAndEnabled
55             ->
56             if (udfpsEnrolledAndEnabled) {
57                 transitionAnimation.immediatelyTransitionTo(1f)
58             } else {
59                 transitionAnimation.immediatelyTransitionTo(0f)
60             }
61         }
62 }
63