blob: f5cc04331f940d93be288699ab0e4b72540a957f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
/*
* Copyright (C) 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.systemui.media.controls.ui
import android.graphics.drawable.Animatable2
import android.graphics.drawable.Drawable
/**
* AnimationBindHandler is responsible for tracking the bound animation state and preventing jank
* and conflicts due to media notifications arriving at any time during an animation. It does this
* in two parts.
* - Exit animations fired as a result of user input are tracked. When these are running, any
*
* ```
* bind actions are delayed until the animation completes (and then fired in sequence).
* ```
* - Continuous animations are tracked using their rebind id. Later calls using the same
*
* ```
* rebind id will be totally ignored to prevent the continuous animation from restarting.
* ```
*/
internal class AnimationBindHandler : Animatable2.AnimationCallback() {
private val onAnimationsComplete = mutableListOf<() -> Unit>()
private val registrations = mutableListOf<Animatable2>()
private var rebindId: Int? = null
val isAnimationRunning: Boolean
get() = registrations.any { it.isRunning }
/**
* This check prevents rebinding to the action button if the identifier has not changed. A null
* value is always considered to be changed. This is used to prevent the connecting animation
* from rebinding (and restarting) if multiple buffer PlaybackStates are pushed by an
* application in a row.
*/
fun updateRebindId(newRebindId: Int?): Boolean {
if (rebindId == null || newRebindId == null || rebindId != newRebindId) {
rebindId = newRebindId
return true
}
return false
}
fun tryRegister(drawable: Drawable?) {
if (drawable is Animatable2) {
val anim = drawable as Animatable2
anim.registerAnimationCallback(this)
registrations.add(anim)
}
}
fun unregisterAll() {
registrations.forEach { it.unregisterAnimationCallback(this) }
registrations.clear()
}
fun tryExecute(action: () -> Unit) {
if (isAnimationRunning) {
onAnimationsComplete.add(action)
} else {
action()
}
}
override fun onAnimationEnd(drawable: Drawable) {
super.onAnimationEnd(drawable)
if (!isAnimationRunning) {
onAnimationsComplete.forEach { it() }
onAnimationsComplete.clear()
}
}
}
|
