1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
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8  * particular file as subject to the "Classpath" exception as provided
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11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
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17  * You should have received a copy of the GNU General Public License version
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24  */
25 package sun.awt;
26 
27 import java.nio.charset.Charset;
28 import java.nio.charset.CharsetEncoder;
29 import java.nio.charset.StandardCharsets;
30 import sun.nio.cs.HistoricallyNamedCharset;
31 
32 public class FontDescriptor implements Cloneable {
33 
34     static {
NativeLibLoader.loadLibraries()35         NativeLibLoader.loadLibraries();
initIDs()36         initIDs();
37     }
38 
39     String nativeName;
40     public CharsetEncoder encoder;
41     String charsetName;
42     private int[] exclusionRanges;
43 
FontDescriptor(String nativeName, CharsetEncoder encoder, int[] exclusionRanges)44     public FontDescriptor(String nativeName, CharsetEncoder encoder,
45                           int[] exclusionRanges){
46 
47         this.nativeName = nativeName;
48         this.encoder = encoder;
49         this.exclusionRanges = exclusionRanges;
50         this.useUnicode = false;
51         Charset cs = encoder.charset();
52         if (cs instanceof HistoricallyNamedCharset)
53             this.charsetName = ((HistoricallyNamedCharset)cs).historicalName();
54         else
55             this.charsetName = cs.name();
56 
57     }
58 
getNativeName()59     public String getNativeName() {
60         return nativeName;
61     }
62 
getFontCharsetEncoder()63     public CharsetEncoder getFontCharsetEncoder() {
64         return encoder;
65     }
66 
getFontCharsetName()67     public String getFontCharsetName() {
68         return charsetName;
69     }
70 
getExclusionRanges()71     public int[] getExclusionRanges() {
72         return exclusionRanges;
73     }
74 
75     /**
76      * Return true if the character is exclusion character.
77      */
isExcluded(char ch)78     public boolean isExcluded(char ch){
79         for (int i = 0; i < exclusionRanges.length; ){
80 
81             int lo = (exclusionRanges[i++]);
82             int up = (exclusionRanges[i++]);
83 
84             if (ch >= lo && ch <= up){
85                 return true;
86             }
87         }
88         return false;
89     }
90 
toString()91     public String toString() {
92         return super.toString() + " [" + nativeName + "|" + encoder + "]";
93     }
94 
95     /**
96      * Initialize JNI field and method IDs
97      */
initIDs()98     private static native void initIDs();
99 
100 
101     public CharsetEncoder unicodeEncoder;
102     boolean useUnicode; // set to true from native code on Unicode-based systems
103 
useUnicode()104     public boolean useUnicode() {
105         if (useUnicode && unicodeEncoder == null) {
106             try {
107                 this.unicodeEncoder = isLE?
108                     StandardCharsets.UTF_16LE.newEncoder():
109                     StandardCharsets.UTF_16BE.newEncoder();
110             } catch (IllegalArgumentException x) {}
111         }
112         return useUnicode;
113     }
114     static boolean isLE;
115     static {
116         String enc = (String) java.security.AccessController.doPrivileged(
117            new sun.security.action.GetPropertyAction("sun.io.unicode.encoding",
118                                                           "UnicodeBig"));
119         isLE = !"UnicodeBig".equals(enc);
120     }
121 }
122