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
|
/*
* Copyright (C) 2010 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.gallery3d.ui;
import android.graphics.Rect;
import android.view.View.MeasureSpec;
class MeasureHelper {
private static MeasureHelper sInstance = new MeasureHelper(null);
private GLView mComponent;
private int mPreferredWidth;
private int mPreferredHeight;
private MeasureHelper(GLView component) {
mComponent = component;
}
public static MeasureHelper getInstance(GLView component) {
sInstance.mComponent = component;
return sInstance;
}
public MeasureHelper setPreferredContentSize(int width, int height) {
mPreferredWidth = width;
mPreferredHeight = height;
return this;
}
public void measure(int widthSpec, int heightSpec) {
Rect p = mComponent.getPaddings();
setMeasuredSize(
getLength(widthSpec, mPreferredWidth + p.left + p.right),
getLength(heightSpec, mPreferredHeight + p.top + p.bottom));
}
private static int getLength(int measureSpec, int prefered) {
int specLength = MeasureSpec.getSize(measureSpec);
switch(MeasureSpec.getMode(measureSpec)) {
case MeasureSpec.EXACTLY: return specLength;
case MeasureSpec.AT_MOST: return Math.min(prefered, specLength);
default: return prefered;
}
}
protected void setMeasuredSize(int width, int height) {
mComponent.setMeasuredSize(width, height);
}
}
|
