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
|
/*
* 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.packageinstaller.permission.ui;
import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
public class ManualLayoutFrame extends ViewGroup {
private int mContentBottom;
private int mWidth;
public ManualLayoutFrame(Context context, AttributeSet attrs) {
super(context, attrs);
}
public void onConfigurationChanged() {
mContentBottom = 0;
mWidth = 0;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (mWidth != 0) {
int newWidth = mWidth;
final int widthMode = MeasureSpec.getMode(widthMeasureSpec);
switch (widthMode) {
case MeasureSpec.AT_MOST: {
newWidth = Math.min(mWidth, MeasureSpec.getSize(widthMeasureSpec));
} break;
case MeasureSpec.EXACTLY: {
newWidth = MeasureSpec.getSize(widthMeasureSpec);
} break;
}
if (newWidth != mWidth) {
mWidth = newWidth;
}
widthMeasureSpec = MeasureSpec.makeMeasureSpec(mWidth, MeasureSpec.EXACTLY);
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
if (mWidth == 0) {
mWidth = getMeasuredWidth();
}
measureChild(getChildAt(0), widthMeasureSpec, heightMeasureSpec);
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
View content = getChildAt(0);
if (mContentBottom == 0) {
mContentBottom = (getMeasuredHeight() + content.getMeasuredHeight()) / 2;
}
final int contentLeft = (getMeasuredWidth() - content.getMeasuredWidth()) / 2;
final int contentTop = mContentBottom - content.getMeasuredHeight();
final int contentRight = contentLeft + content.getMeasuredWidth();
content.layout(contentLeft, contentTop, contentRight, mContentBottom);
}
}
|
