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
|
/*
* 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.animation;
import android.graphics.Rect;
/**
* An animation that controls the clip of an object. See the
* {@link android.view.animation full package} description for details and
* sample code.
*
* @hide
*/
public class ClipRectAnimation extends Animation {
protected Rect mFromRect = new Rect();
protected Rect mToRect = new Rect();
/**
* Constructor to use when building a ClipRectAnimation from code
*
* @param fromClip the clip rect to animate from
* @param toClip the clip rect to animate to
*/
public ClipRectAnimation(Rect fromClip, Rect toClip) {
if (fromClip == null || toClip == null) {
throw new RuntimeException("Expected non-null animation clip rects");
}
mFromRect.set(fromClip);
mToRect.set(toClip);
}
/**
* Constructor to use when building a ClipRectAnimation from code
*/
public ClipRectAnimation(int fromL, int fromT, int fromR, int fromB,
int toL, int toT, int toR, int toB) {
mFromRect.set(fromL, fromT, fromR, fromB);
mToRect.set(toL, toT, toR, toB);
}
@Override
protected void applyTransformation(float it, Transformation tr) {
int l = mFromRect.left + (int) ((mToRect.left - mFromRect.left) * it);
int t = mFromRect.top + (int) ((mToRect.top - mFromRect.top) * it);
int r = mFromRect.right + (int) ((mToRect.right - mFromRect.right) * it);
int b = mFromRect.bottom + (int) ((mToRect.bottom - mFromRect.bottom) * it);
tr.setClipRect(l, t, r, b);
}
@Override
public boolean willChangeTransformationMatrix() {
return false;
}
}
|