1 /*
   2  * Copyright (c) 1996, 2014, 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 java.nio.charset.StandardCharsets;
  30 import sun.nio.cs.HistoricallyNamedCharset;
  31 
  32 public class FontDescriptor implements Cloneable {
  33 
  34     static {
  35         NativeLibLoader.loadLibraries();
  36         initIDs();
  37     }
  38 
  39     String nativeName;
  40     public CharsetEncoder encoder;
  41     String charsetName;
  42     private int[] exclusionRanges;
  43 
  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 
  59     public String getNativeName() {
  60         return nativeName;
  61     }
  62 
  63     public CharsetEncoder getFontCharsetEncoder() {
  64         return encoder;
  65     }
  66 
  67     public String getFontCharsetName() {
  68         return charsetName;
  69     }
  70 
  71     public int[] getExclusionRanges() {
  72         return exclusionRanges;
  73     }
  74 
  75     /**
  76      * Return true if the character is exclusion character.
  77      */
  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 
  91     public String toString() {
  92         return super.toString() + " [" + nativeName + "|" + encoder + "]";
  93     }
  94 
  95     /**
  96      * Initialize JNI field and method IDs
  97      */
  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 
 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 = java.security.AccessController.doPrivileged(
 117            new sun.security.action.GetPropertyAction("sun.io.unicode.encoding",
 118                                                           "UnicodeBig"));
 119         isLE = !"UnicodeBig".equals(enc);
 120     }
 121 }