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
|
/*
* Copyright (C) 2015 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.statusbar.stack;
import android.graphics.Path;
import android.view.animation.PathInterpolator;
/**
* An interpolator specifically designed for the appear animation of heads up notifications.
*/
public class HeadsUpAppearInterpolator extends PathInterpolator {
public HeadsUpAppearInterpolator() {
super(getAppearPath());
}
private static Path getAppearPath() {
Path path = new Path();
path.moveTo(0, 0);
float x1 = 250f;
float x2 = 150f;
float x3 = 100f;
float y1 = 90f;
float y2 = 78f;
float y3 = 80f;
float xTot = (x1 + x2 + x3);
path.cubicTo(x1 * 0.9f / xTot, 0f,
x1 * 0.8f / xTot, y1 / y3,
x1 / xTot , y1 / y3);
path.cubicTo((x1 + x2 * 0.4f) / xTot, y1 / y3,
(x1 + x2 * 0.2f) / xTot, y2 / y3,
(x1 + x2) / xTot, y2 / y3);
path.cubicTo((x1 + x2 + x3 * 0.4f) / xTot, y2 / y3,
(x1 + x2 + x3 * 0.2f) / xTot, 1f,
1f, 1f);
return path;
}
}
|
