1 /*
   2  * Copyright (c) 1996, 2005, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  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).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package sun.awt;
  26 
  27 import java.nio.charset.Charset;
  28 import java.nio.charset.CharsetEncoder;
  29 import sun.nio.cs.HistoricallyNamedCharset;
  30 
  31 public class FontDescriptor implements Cloneable {
  32 
  33     static {
  34         NativeLibLoader.loadLibraries();
  35         initIDs();
  36     }
  37 
  38     String nativeName;
  39     public CharsetEncoder encoder;
  40     String charsetName;
  41     private int[] exclusionRanges;
  42 
  43     public FontDescriptor(String nativeName, CharsetEncoder encoder,
  44                           int[] exclusionRanges){
  45 
  46         this.nativeName = nativeName;
  47         this.encoder = encoder;
  48         this.exclusionRanges = exclusionRanges;
  49         this.useUnicode = false;
  50         Charset cs = encoder.charset();
  51         if (cs instanceof HistoricallyNamedCharset)
  52             this.charsetName = ((HistoricallyNamedCharset)cs).historicalName();
  53         else
  54             this.charsetName = cs.name();
  55 
  56     }
  57 
  58     public String getNativeName() {
  59         return nativeName;
  60     }
  61 
  62     public CharsetEncoder getFontCharsetEncoder() {
  63         return encoder;
  64     }
  65 
  66     public String getFontCharsetName() {
  67         return charsetName;
  68     }
  69 
  70     public int[] getExclusionRanges() {
  71         return exclusionRanges;
  72     }
  73 
  74     /**
  75      * Return true if the character is exclusion character.
  76      */
  77     public boolean isExcluded(char ch){
  78         for (int i = 0; i < exclusionRanges.length; ){
  79 
  80             int lo = (exclusionRanges[i++]);
  81             int up = (exclusionRanges[i++]);
  82 
  83             if (ch >= lo && ch <= up){
  84                 return true;
  85             }
  86         }
  87         return false;
  88     }
  89 
  90     public String toString() {
  91         return super.toString() + " [" + nativeName + "|" + encoder + "]";
  92     }
  93 
  94     /**
  95      * Initialize JNI field and method IDs
  96      */
  97     private static native void initIDs();
  98 
  99 
 100     public CharsetEncoder unicodeEncoder;
 101     boolean useUnicode; // set to true from native code on Unicode-based systems
 102 
 103     public boolean useUnicode() {
 104         if (useUnicode && unicodeEncoder == null) {
 105             try {
 106                 this.unicodeEncoder = isLE?
 107                     Charset.forName("UTF_16LE").newEncoder():
 108                     Charset.forName("UTF_16BE").newEncoder();
 109             } catch (IllegalArgumentException x) {}
 110         }
 111         return useUnicode;
 112     }
 113     static boolean isLE;
 114     static {
 115         String enc = (String) java.security.AccessController.doPrivileged(
 116            new sun.security.action.GetPropertyAction("sun.io.unicode.encoding",
 117                                                           "UnicodeBig"));
 118         isLE = !"UnicodeBig".equals(enc);
 119     }
 120 }