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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
/*
* Copyright (C) 2012 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.inputmethod.latin;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.os.Build;
import android.util.TypedValue;
import java.util.HashMap;
public final class ResourceUtils {
public static final float UNDEFINED_RATIO = -1.0f;
public static final int UNDEFINED_DIMENSION = -1;
private ResourceUtils() {
// This utility class is not publicly instantiable.
}
private static final String HARDWARE_PREFIX = Build.HARDWARE + ",";
private static final HashMap<String, String> sDeviceOverrideValueMap =
CollectionUtils.newHashMap();
public static String getDeviceOverrideValue(Resources res, int overrideResId, String defValue) {
final int orientation = res.getConfiguration().orientation;
final String key = overrideResId + "-" + orientation;
if (!sDeviceOverrideValueMap.containsKey(key)) {
String overrideValue = defValue;
for (final String element : res.getStringArray(overrideResId)) {
if (element.startsWith(HARDWARE_PREFIX)) {
overrideValue = element.substring(HARDWARE_PREFIX.length());
break;
}
}
sDeviceOverrideValueMap.put(key, overrideValue);
}
return sDeviceOverrideValueMap.get(key);
}
public static boolean isValidFraction(final float fraction) {
return fraction >= 0.0f;
}
// {@link Resources#getDimensionPixelSize(int)} returns at least one pixel size.
public static boolean isValidDimensionPixelSize(final int dimension) {
return dimension > 0;
}
// {@link Resources#getDimensionPixelOffset(int)} may return zero pixel offset.
public static boolean isValidDimensionPixelOffset(final int dimension) {
return dimension >= 0;
}
public static float getFraction(final TypedArray a, final int index, final float defValue) {
final TypedValue value = a.peekValue(index);
if (value == null || !isFractionValue(value)) {
return defValue;
}
return a.getFraction(index, 1, 1, defValue);
}
public static float getFraction(final TypedArray a, final int index) {
return getFraction(a, index, UNDEFINED_RATIO);
}
public static int getDimensionPixelSize(final TypedArray a, final int index) {
final TypedValue value = a.peekValue(index);
if (value == null || !isDimensionValue(value)) {
return ResourceUtils.UNDEFINED_DIMENSION;
}
return a.getDimensionPixelSize(index, ResourceUtils.UNDEFINED_DIMENSION);
}
public static float getDimensionOrFraction(TypedArray a, int index, int base,
float defValue) {
final TypedValue value = a.peekValue(index);
if (value == null) {
return defValue;
}
if (isFractionValue(value)) {
return a.getFraction(index, base, base, defValue);
} else if (isDimensionValue(value)) {
return a.getDimension(index, defValue);
}
return defValue;
}
public static int getEnumValue(TypedArray a, int index, int defValue) {
final TypedValue value = a.peekValue(index);
if (value == null) {
return defValue;
}
if (isIntegerValue(value)) {
return a.getInt(index, defValue);
}
return defValue;
}
public static boolean isFractionValue(TypedValue v) {
return v.type == TypedValue.TYPE_FRACTION;
}
public static boolean isDimensionValue(TypedValue v) {
return v.type == TypedValue.TYPE_DIMENSION;
}
public static boolean isIntegerValue(TypedValue v) {
return v.type >= TypedValue.TYPE_FIRST_INT && v.type <= TypedValue.TYPE_LAST_INT;
}
public static boolean isStringValue(TypedValue v) {
return v.type == TypedValue.TYPE_STRING;
}
}
|
