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.FromAlternateBouncerTransitionInteractor.Companion.TO_OCCLUDED_DURATION 21 import com.android.systemui.keyguard.shared.model.Edge 22 import com.android.systemui.keyguard.shared.model.KeyguardState.ALTERNATE_BOUNCER 23 import com.android.systemui.keyguard.shared.model.KeyguardState.OCCLUDED 24 import com.android.systemui.keyguard.ui.KeyguardTransitionAnimationFlow 25 import com.android.systemui.keyguard.ui.transitions.DeviceEntryIconTransition 26 import javax.inject.Inject 27 import kotlinx.coroutines.flow.Flow 28 29 /** 30 * Breaks down ALTERNATE_BOUNCER->OCCLUDED transition into discrete steps for corresponding views to 31 * consume. 32 */ 33 @SysUISingleton 34 class AlternateBouncerToOccludedTransitionViewModel 35 @Inject 36 constructor(animationFlow: KeyguardTransitionAnimationFlow) : DeviceEntryIconTransition { 37 private val transitionAnimation = 38 animationFlow.setup( 39 duration = TO_OCCLUDED_DURATION, 40 edge = Edge.create(from = ALTERNATE_BOUNCER, to = OCCLUDED), 41 ) 42 43 val lockscreenAlpha: Flow<Float> = transitionAnimation.immediatelyTransitionTo(0f) 44 45 override val deviceEntryParentViewAlpha: Flow<Float> = 46 transitionAnimation.immediatelyTransitionTo(0f) 47 } 48