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.biometrics.ui.viewmodel
18 
19 import com.android.keyguard.logging.DeviceEntryIconLogger
20 import com.android.systemui.bouncer.domain.interactor.AlternateBouncerInteractor
21 import com.android.systemui.keyguard.ui.viewmodel.DeviceEntryIconViewModel
22 import com.android.systemui.statusbar.phone.SystemUIDialogManager
23 import com.android.systemui.statusbar.phone.hideAffordancesRequest
24 import javax.inject.Inject
25 import kotlinx.coroutines.ExperimentalCoroutinesApi
26 import kotlinx.coroutines.flow.Flow
27 import kotlinx.coroutines.flow.combine
28 import kotlinx.coroutines.flow.distinctUntilChanged
29 import kotlinx.coroutines.flow.map
30 
31 /**
32  * View model for the UdfpsTouchOverlay for when UDFPS is being requested for device entry. Handles
33  * touches as long as the device entry view is visible (the lockscreen or the alternate bouncer
34  * view).
35  */
36 @ExperimentalCoroutinesApi
37 class DeviceEntryUdfpsTouchOverlayViewModel
38 @Inject
39 constructor(
40     deviceEntryIconViewModel: DeviceEntryIconViewModel,
41     alternateBouncerInteractor: AlternateBouncerInteractor,
42     systemUIDialogManager: SystemUIDialogManager,
43     logger: DeviceEntryIconLogger,
44 ) : UdfpsTouchOverlayViewModel {
45     private val deviceEntryViewAlphaIsMostlyVisible: Flow<Boolean> =
46         deviceEntryIconViewModel.deviceEntryViewAlpha
47             .map { it > ALLOW_TOUCH_ALPHA_THRESHOLD }
48             .distinctUntilChanged()
49     override val shouldHandleTouches: Flow<Boolean> =
50         combine(
51                 deviceEntryViewAlphaIsMostlyVisible,
52                 alternateBouncerInteractor.isVisible,
53                 systemUIDialogManager.hideAffordancesRequest,
54             ) { canTouchDeviceEntryViewAlpha, alternateBouncerVisible, hideAffordancesRequest ->
55                 val shouldHandleTouches =
56                     (canTouchDeviceEntryViewAlpha && !hideAffordancesRequest) ||
57                         alternateBouncerVisible
58                 logger.logDeviceEntryUdfpsTouchOverlayShouldHandleTouches(
59                     shouldHandleTouches,
60                     canTouchDeviceEntryViewAlpha,
61                     alternateBouncerVisible,
62                     hideAffordancesRequest
63                 )
64                 shouldHandleTouches
65             }
66             .distinctUntilChanged()
67 
68     companion object {
69         // only allow touches if the view is still mostly visible
70         const val ALLOW_TOUCH_ALPHA_THRESHOLD = .9f
71     }
72 }
73