1 /* 2 * Copyright (c) 1996, 2020, 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.io.ByteArrayOutputStream; 28 import java.io.OutputStreamWriter; 29 import java.io.IOException; 30 import java.nio.charset.Charset; 31 import java.nio.charset.CharsetEncoder; 32 import java.nio.charset.StandardCharsets; 33 34 public class FontDescriptor implements Cloneable { 35 36 static { 37 NativeLibLoader.loadLibraries(); 38 initIDs(); 39 } 40 41 String nativeName; 42 public CharsetEncoder encoder; 43 String charsetName; 44 private int[] exclusionRanges; 45 private final boolean defaultFont; 46 47 public FontDescriptor(String nativeName, CharsetEncoder encoder, 48 int[] exclusionRanges) { 49 this(nativeName, encoder, exclusionRanges, false); 50 } 51 52 public FontDescriptor(String nativeName, CharsetEncoder encoder, 53 int[] exclusionRanges, boolean defaultFont) { 54 55 this.nativeName = nativeName; 56 this.encoder = encoder; 57 this.exclusionRanges = exclusionRanges; 58 this.useUnicode = false; 59 this.defaultFont = defaultFont; 60 Charset cs = encoder.charset(); 61 // The following looks odd but its the only public way to get the 62 // historical name if one exists and the canonical name otherwise. 63 try { 64 OutputStreamWriter osw = new OutputStreamWriter(new ByteArrayOutputStream(), cs); 65 this.charsetName = osw.getEncoding(); 66 osw.close(); 67 } catch (IOException ioe) { 68 } 69 } 70 71 public String getNativeName() { 72 return nativeName; 73 } 74 75 public CharsetEncoder getFontCharsetEncoder() { 76 return encoder; 77 } 78 79 public String getFontCharsetName() { 80 return charsetName; 81 } 82 83 public int[] getExclusionRanges() { 84 return exclusionRanges; 85 } 86 87 /** 88 * Return true if the character is exclusion character. 89 */ 90 public boolean isExcluded(char ch){ 91 for (int i = 0; i < exclusionRanges.length; ){ 92 93 int lo = (exclusionRanges[i++]); 94 int up = (exclusionRanges[i++]); 95 96 if (ch >= lo && ch <= up){ 97 return true; 98 } 99 } 100 return false; 101 } 102 103 public String toString() { 104 return super.toString() + " [" + nativeName + "|" + encoder + "]"; 105 } 106 107 /** 108 * Initialize JNI field and method IDs 109 */ 110 private static native void initIDs(); 111 112 113 public CharsetEncoder unicodeEncoder; 114 boolean useUnicode; // set to true from native code on Unicode-based systems 115 116 public boolean useUnicode() { 117 if (useUnicode && unicodeEncoder == null) { 118 try { 119 this.unicodeEncoder = isLE? 120 StandardCharsets.UTF_16LE.newEncoder(): 121 StandardCharsets.UTF_16BE.newEncoder(); 122 } catch (IllegalArgumentException x) {} 123 } 124 return useUnicode; 125 } 126 static boolean isLE; 127 static { 128 String enc = java.security.AccessController.doPrivileged( 129 new sun.security.action.GetPropertyAction("sun.io.unicode.encoding", 130 "UnicodeBig")); 131 isLE = !"UnicodeBig".equals(enc); 132 } 133 134 public boolean isDefaultFont() { 135 return defaultFont; 136 } 137 }