1 /*
2  * Copyright (C) 2021 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.unfold
18 
19 import com.android.systemui.unfold.UnfoldTransitionProgressProvider.TransitionProgressListener
20 import com.android.systemui.util.WallpaperController
21 import javax.inject.Inject
22 
23 @SysUIUnfoldScope
24 class UnfoldTransitionWallpaperController @Inject constructor(
25     private val unfoldTransitionProgressProvider: UnfoldTransitionProgressProvider,
26     private val wallpaperController: WallpaperController
27 ) {
28 
29     fun init() {
30         unfoldTransitionProgressProvider.addCallback(TransitionListener())
31     }
32 
33     private inner class TransitionListener : TransitionProgressListener {
34         override fun onTransitionProgress(progress: Float) {
35             // Fully zoomed in when fully unfolded
36             wallpaperController.setUnfoldTransitionZoom(1 - progress)
37         }
38 
39         override fun onTransitionFinished() {
40             // Resets wallpaper zoom-out to 0f when fully folded
41             // When fully unfolded it is set to 0f by onTransitionProgress
42             wallpaperController.setUnfoldTransitionZoom(0f)
43         }
44     }
45 }
46