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.FromPrimaryBouncerTransitionInteractor.Companion.TO_DOZING_DURATION
22 import com.android.systemui.keyguard.shared.model.Edge
23 import com.android.systemui.keyguard.shared.model.KeyguardState.DOZING
24 import com.android.systemui.keyguard.shared.model.KeyguardState.PRIMARY_BOUNCER
25 import com.android.systemui.keyguard.ui.KeyguardTransitionAnimationFlow
26 import com.android.systemui.keyguard.ui.transitions.DeviceEntryIconTransition
27 import com.android.systemui.scene.shared.model.Scenes
28 import javax.inject.Inject
29 import kotlinx.coroutines.ExperimentalCoroutinesApi
30 import kotlinx.coroutines.flow.Flow
31 import kotlinx.coroutines.flow.emptyFlow
32 import kotlinx.coroutines.flow.flatMapLatest
33 
34 /**
35  * Breaks down PRIMARY BOUNCER->DOZING transition into discrete steps for corresponding views to
36  * consume.
37  */
38 @ExperimentalCoroutinesApi
39 @SysUISingleton
40 class PrimaryBouncerToDozingTransitionViewModel
41 @Inject
42 constructor(
43     deviceEntryUdfpsInteractor: DeviceEntryUdfpsInteractor,
44     animationFlow: KeyguardTransitionAnimationFlow,
45 ) : DeviceEntryIconTransition {
46 
47     private val transitionAnimation =
48         animationFlow
49             .setup(
50                 duration = TO_DOZING_DURATION,
51                 edge = Edge.create(from = Scenes.Bouncer, to = DOZING),
52             )
53             .setupWithoutSceneContainer(
54                 edge = Edge.create(from = PRIMARY_BOUNCER, to = DOZING),
55             )
56 
57     val deviceEntryBackgroundViewAlpha: Flow<Float> =
58         transitionAnimation.immediatelyTransitionTo(0f)
59 
60     override val deviceEntryParentViewAlpha: Flow<Float> =
61         deviceEntryUdfpsInteractor.isUdfpsEnrolledAndEnabled.flatMapLatest {
62             isUdfpsEnrolledAndEnabled ->
63             if (isUdfpsEnrolledAndEnabled) {
64                 transitionAnimation.immediatelyTransitionTo(1f)
65             } else {
66                 emptyFlow()
67             }
68         }
69 }
70