blob: c60b96ca76dec72507814ce0ad9847d2c3bf128e (
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
88
89
90
91
92
93
94
|
/*
* Copyright (C) 2014 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 android.view;
import android.os.Parcel;
import android.os.Parcelable;
/**
* This class contains window animation frame statistics. For example, a window
* animation is usually performed when the application is transitioning from one
* activity to another. The frame statistics are a snapshot for the time interval
* from {@link #getStartTimeNano()} to {@link #getEndTimeNano()}.
* <p>
* The key idea is that in order to provide a smooth user experience the system should
* run window animations at a specific time interval obtained by calling {@link
* #getRefreshPeriodNano()}. If the system does not render a frame every refresh
* period the user will see irregular window transitions. The time when the frame was
* actually presented on the display by calling {@link #getFramePresentedTimeNano(int)}.
*/
public final class WindowAnimationFrameStats extends FrameStats implements Parcelable {
/**
* @hide
*/
public WindowAnimationFrameStats() {
/* do nothing */
}
/**
* Initializes this isntance.
*
* @param refreshPeriodNano The display refresh period.
* @param framesPresentedTimeNano The presented frame times.
*
* @hide
*/
public void init(long refreshPeriodNano, long[] framesPresentedTimeNano) {
mRefreshPeriodNano = refreshPeriodNano;
mFramesPresentedTimeNano = framesPresentedTimeNano;
}
private WindowAnimationFrameStats(Parcel parcel) {
mRefreshPeriodNano = parcel.readLong();
mFramesPresentedTimeNano = parcel.createLongArray();
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel parcel, int flags) {
parcel.writeLong(mRefreshPeriodNano);
parcel.writeLongArray(mFramesPresentedTimeNano);
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append("WindowAnimationFrameStats[");
builder.append("frameCount:" + getFrameCount());
builder.append(", fromTimeNano:" + getStartTimeNano());
builder.append(", toTimeNano:" + getEndTimeNano());
builder.append(']');
return builder.toString();
}
public static final Creator<WindowAnimationFrameStats> CREATOR =
new Creator<WindowAnimationFrameStats>() {
@Override
public WindowAnimationFrameStats createFromParcel(Parcel parcel) {
return new WindowAnimationFrameStats(parcel);
}
@Override
public WindowAnimationFrameStats[] newArray(int size) {
return new WindowAnimationFrameStats[size];
}
};
}
|
