1 /*
2  * 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.keyguard.domain.interactor.FromDreamingTransitionInteractor
21 import com.android.systemui.keyguard.shared.model.Edge
22 import com.android.systemui.keyguard.shared.model.KeyguardState.DREAMING
23 import com.android.systemui.keyguard.shared.model.KeyguardState.GONE
24 import com.android.systemui.keyguard.ui.KeyguardTransitionAnimationFlow
25 import com.android.systemui.scene.shared.model.Scenes
26 import javax.inject.Inject
27 import kotlinx.coroutines.flow.Flow
28 
29 @SysUISingleton
30 class DreamingToGoneTransitionViewModel
31 @Inject
32 constructor(
33     animationFlow: KeyguardTransitionAnimationFlow,
34 ) {
35 
36     private val transitionAnimation =
37         animationFlow
38             .setup(
39                 duration = FromDreamingTransitionInteractor.TO_GONE_DURATION,
40                 edge = Edge.create(from = DREAMING, to = Scenes.Gone),
41             )
42             .setupWithoutSceneContainer(
43                 edge = Edge.create(from = DREAMING, to = GONE),
44             )
45 
46     /** Lockscreen views alpha */
47     val lockscreenAlpha: Flow<Float> = transitionAnimation.immediatelyTransitionTo(0f)
48 }
49