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
95
96
97
|
/*
* Copyright (C) 2017 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.launcher3.folder;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.ValueAnimator;
import com.android.launcher3.LauncherAnimUtils;
/**
* Animates a Folder preview item.
*/
class FolderPreviewItemAnim {
private static PreviewItemDrawingParams sTmpParams = new PreviewItemDrawingParams(0, 0, 0, 0);
private ValueAnimator mValueAnimator;
float finalScale;
float finalTransX;
float finalTransY;
/**
* @param params layout params to animate
* @param index0 original index of the item to be animated
* @param items0 original number of items in the preview
* @param index1 new index of the item to be animated
* @param items1 new number of items in the preview
* @param duration duration in ms of the animation
* @param onCompleteRunnable runnable to execute upon animation completion
*/
FolderPreviewItemAnim(final PreviewItemManager previewItemManager,
final PreviewItemDrawingParams params, int index0, int items0, int index1, int items1,
int duration, final Runnable onCompleteRunnable) {
previewItemManager.computePreviewItemDrawingParams(index1, items1, sTmpParams);
finalScale = sTmpParams.scale;
finalTransX = sTmpParams.transX;
finalTransY = sTmpParams.transY;
previewItemManager.computePreviewItemDrawingParams(index0, items0, sTmpParams);
final float scale0 = sTmpParams.scale;
final float transX0 = sTmpParams.transX;
final float transY0 = sTmpParams.transY;
mValueAnimator = LauncherAnimUtils.ofFloat(0f, 1.0f);
mValueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener(){
public void onAnimationUpdate(ValueAnimator animation) {
float progress = animation.getAnimatedFraction();
params.transX = transX0 + progress * (finalTransX - transX0);
params.transY = transY0 + progress * (finalTransY - transY0);
params.scale = scale0 + progress * (finalScale - scale0);
previewItemManager.onParamsChanged();
}
});
mValueAnimator.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
if (onCompleteRunnable != null) {
onCompleteRunnable.run();
}
params.anim = null;
}
});
mValueAnimator.setDuration(duration);
}
public void start() {
mValueAnimator.start();
}
public void cancel() {
mValueAnimator.cancel();
}
public boolean hasEqualFinalState(FolderPreviewItemAnim anim) {
return finalTransY == anim.finalTransY && finalTransX == anim.finalTransX &&
finalScale == anim.finalScale;
}
}
|
