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.communal.util
18 
19 import android.content.Context
20 import android.graphics.Color
21 import com.android.settingslib.Utils
22 import com.android.systemui.common.ui.domain.interactor.ConfigurationInteractor
23 import com.android.systemui.dagger.SysUISingleton
24 import com.android.systemui.dagger.qualifiers.Application
25 import javax.inject.Inject
26 import kotlinx.coroutines.CoroutineScope
27 import kotlinx.coroutines.flow.SharingStarted
28 import kotlinx.coroutines.flow.StateFlow
29 import kotlinx.coroutines.flow.map
30 import kotlinx.coroutines.flow.stateIn
31 
32 /** Wrapper around colors used for the communal UI. */
33 interface CommunalColors {
34     /** The background color of the glanceable hub. */
35     val backgroundColor: StateFlow<Color>
36 }
37 
38 @SysUISingleton
39 class CommunalColorsImpl
40 @Inject
41 constructor(
42     @Application applicationScope: CoroutineScope,
43     private val context: Context,
44     configurationInteractor: ConfigurationInteractor,
45 ) : CommunalColors {
46     override val backgroundColor: StateFlow<Color> =
47         configurationInteractor.onAnyConfigurationChange
<lambda>null48             .map { loadBackgroundColor() }
49             .stateIn(
50                 scope = applicationScope,
51                 started = SharingStarted.WhileSubscribed(),
52                 initialValue = loadBackgroundColor()
53             )
54 
loadBackgroundColornull55     private fun loadBackgroundColor(): Color =
56         Color.valueOf(
57             Utils.getColorAttrDefaultColor(
58                 context,
59                 com.android.internal.R.attr.materialColorOutlineVariant
60             )
61         )
62 }
63