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
|
/*
* ConnectBot: simple, powerful, open-source SSH client for Android
* Copyright 2007 Kenny Root, Jeffrey Sharkey
*
* 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 org.connectbot.util;
import android.annotation.TargetApi;
import android.graphics.Paint;
import android.text.AndroidCharacter;
/**
* @author Kenny Root
*
*/
public abstract class EastAsianWidth {
public static EastAsianWidth getInstance() {
if (PreferenceConstants.PRE_FROYO)
return PreFroyo.Holder.sInstance;
else
return FroyoAndBeyond.Holder.sInstance;
}
/**
* @param charArray
* @param i
* @param position
* @param wideAttribute
*/
public abstract void measure(char[] charArray, int start, int end,
byte[] wideAttribute, Paint paint, int charWidth);
private static class PreFroyo extends EastAsianWidth {
private static final int BUFFER_SIZE = 4096;
private float[] mWidths = new float[BUFFER_SIZE];
private static class Holder {
private static final PreFroyo sInstance = new PreFroyo();
}
@Override
public void measure(char[] charArray, int start, int end,
byte[] wideAttribute, Paint paint, int charWidth) {
paint.getTextWidths(charArray, start, end, mWidths);
final int N = end - start;
for (int i = 0; i < N; i++)
wideAttribute[i] = (byte) (((int) mWidths[i] != charWidth) ?
AndroidCharacter.EAST_ASIAN_WIDTH_WIDE :
AndroidCharacter.EAST_ASIAN_WIDTH_NARROW);
}
}
@TargetApi(8)
private static class FroyoAndBeyond extends EastAsianWidth {
private static class Holder {
private static final FroyoAndBeyond sInstance = new FroyoAndBeyond();
}
@Override
public void measure(char[] charArray, int start, int end,
byte[] wideAttribute, Paint paint, int charWidth) {
AndroidCharacter.getEastAsianWidths(charArray, start, end - start, wideAttribute);
}
}
}
|
