Showing the changes to java/pkg/sun/font/TrueTypeGlyphMapper.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,269 @@ | |||
| 1 | /* | ||
| 2 | * Copyright (c) 2003, 2006, 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 | |||
| 26 | package sun.font; | ||
| 27 | |||
| 28 | import java.nio.ByteBuffer; | ||
| 29 | import java.util.Locale; | ||
| 30 | |||
| 31 | public class TrueTypeGlyphMapper extends CharToGlyphMapper { | ||
| 32 | |||
| 33 | static final char REVERSE_SOLIDUS = 0x005c; // the backslash char. | ||
| 34 | static final char JA_YEN = 0x00a5; | ||
| 35 | static final char JA_FULLWIDTH_TILDE_CHAR = 0xff5e; | ||
| 36 | static final char JA_WAVE_DASH_CHAR = 0x301c; | ||
| 37 | |||
| 38 | /* if running on Solaris and default Locale is ja_JP then | ||
| 39 | * we map need to remap reverse solidus (backslash) to Yen as | ||
| 40 | * apparently expected there. | ||
| 41 | */ | ||
| 42 | static final boolean isJAlocale = Locale.JAPAN.equals(Locale.getDefault()); | ||
| 43 | private final boolean needsJAremapping; | ||
| 44 | private boolean remapJAWaveDash; | ||
| 45 | |||
| 46 | TrueTypeFont font; | ||
| 47 | CMap cmap; | ||
| 48 | int numGlyphs; | ||
| 49 | |||
| 50 | public TrueTypeGlyphMapper(TrueTypeFont font) { | ||
| 51 | this.font = font; | ||
| 52 | try { | ||
| 53 | cmap = CMap.initialize(font); | ||
| 54 | } catch (Exception e) { | ||
| 55 | cmap = null; | ||
| 56 | } | ||
| 57 | if (cmap == null) { | ||
| 58 | handleBadCMAP(); | ||
| 59 | } | ||
| 60 | missingGlyph = 0; /* standard for TrueType fonts */ | ||
| 61 | ByteBuffer buffer = font.getTableBuffer(TrueTypeFont.maxpTag); | ||
| 62 | numGlyphs = buffer.getChar(4); // offset 4 bytes in MAXP table. | ||
| 63 | if (FontUtilities.isSolaris && isJAlocale && font.supportsJA()) { | ||
| 64 | needsJAremapping = true; | ||
| 65 | if (FontUtilities.isSolaris8 && | ||
| 66 | getGlyphFromCMAP(JA_WAVE_DASH_CHAR) == missingGlyph) { | ||
| 67 | remapJAWaveDash = true; | ||
| 68 | } | ||
| 69 | } else { | ||
| 70 | needsJAremapping = false; | ||
| 71 | } | ||
| 72 | } | ||
| 73 | |||
| 74 | public int getNumGlyphs() { | ||
| 75 | return numGlyphs; | ||
| 76 | } | ||
| 77 | |||
| 78 | private char getGlyphFromCMAP(int charCode) { | ||
| 79 | try { | ||
| 80 | char glyphCode = cmap.getGlyph(charCode); | ||
| 81 | if (glyphCode < numGlyphs || | ||
| 82 | glyphCode >= FileFontStrike.INVISIBLE_GLYPHS) { | ||
| 83 | return glyphCode; | ||
| 84 | } else { | ||
| 85 | if (FontUtilities.isLogging()) { | ||
| 86 | FontUtilities.getLogger().warning | ||
| 87 | (font + " out of range glyph id=" + | ||
| 88 | Integer.toHexString((int)glyphCode) + | ||
| 89 | " for char " + Integer.toHexString(charCode)); | ||
| 90 | } | ||
| 91 | return (char)missingGlyph; | ||
| 92 | } | ||
| 93 | } catch(Exception e) { | ||
| 94 | handleBadCMAP(); | ||
| 95 | return (char) missingGlyph; | ||
| 96 | } | ||
| 97 | } | ||
| 98 | |||
| 99 | private void handleBadCMAP() { | ||
| 100 | if (FontUtilities.isLogging()) { | ||
| 101 | FontUtilities.getLogger().severe("Null Cmap for " + font + | ||
| 102 | "substituting for this font"); | ||
| 103 | } | ||
| 104 | SunFontManager.getInstance().deRegisterBadFont(font); | ||
| 105 | /* The next line is not really a solution, but might | ||
| 106 | * reduce the exceptions until references to this font2D | ||
| 107 | * are gone. | ||
| 108 | */ | ||
| 109 | cmap = CMap.theNullCmap; | ||
| 110 | } | ||
| 111 | |||
| 112 | private final char remapJAChar(char unicode) { | ||
| 113 | switch (unicode) { | ||
| 114 | case REVERSE_SOLIDUS: | ||
| 115 | return JA_YEN; | ||
| 116 | /* This is a workaround for bug 4533422. | ||
| 117 | * Japanese wave dash missing from Solaris JA TrueType fonts. | ||
| 118 | */ | ||
| 119 | case JA_WAVE_DASH_CHAR: | ||
| 120 | if (remapJAWaveDash) { | ||
| 121 | return JA_FULLWIDTH_TILDE_CHAR; | ||
| 122 | } | ||
| 123 | default: return unicode; | ||
| 124 | } | ||
| 125 | } | ||
| 126 | private final int remapJAIntChar(int unicode) { | ||
| 127 | switch (unicode) { | ||
| 128 | case REVERSE_SOLIDUS: | ||
| 129 | return JA_YEN; | ||
| 130 | /* This is a workaround for bug 4533422. | ||
| 131 | * Japanese wave dash missing from Solaris JA TrueType fonts. | ||
| 132 | */ | ||
| 133 | case JA_WAVE_DASH_CHAR: | ||
| 134 | if (remapJAWaveDash) { | ||
| 135 | return JA_FULLWIDTH_TILDE_CHAR; | ||
| 136 | } | ||
| 137 | default: return unicode; | ||
| 138 | } | ||
| 139 | } | ||
| 140 | |||
| 141 | public int charToGlyph(char unicode) { | ||
| 142 | if (needsJAremapping) { | ||
| 143 | unicode = remapJAChar(unicode); | ||
| 144 | } | ||
| 145 | int glyph = getGlyphFromCMAP(unicode); | ||
| 146 | if (font.checkUseNatives() && glyph < font.glyphToCharMap.length) { | ||
| 147 | font.glyphToCharMap[glyph] = unicode; | ||
| 148 | } | ||
| 149 | return glyph; | ||
| 150 | } | ||
| 151 | |||
| 152 | public int charToGlyph(int unicode) { | ||
| 153 | if (needsJAremapping) { | ||
| 154 | unicode = remapJAIntChar(unicode); | ||
| 155 | } | ||
| 156 | int glyph = getGlyphFromCMAP(unicode); | ||
| 157 | if (font.checkUseNatives() && glyph < font.glyphToCharMap.length) { | ||
| 158 | font.glyphToCharMap[glyph] = (char)unicode; | ||
| 159 | } | ||
| 160 | return glyph; | ||
| 161 | } | ||
| 162 | |||
| 163 | public void charsToGlyphs(int count, int[] unicodes, int[] glyphs) { | ||
| 164 | for (int i=0;i<count;i++) { | ||
| 165 | if (needsJAremapping) { | ||
| 166 | glyphs[i] = getGlyphFromCMAP(remapJAIntChar(unicodes[i])); | ||
| 167 | } else { | ||
| 168 | glyphs[i] = getGlyphFromCMAP(unicodes[i]); | ||
| 169 | } | ||
| 170 | if (font.checkUseNatives() && | ||
| 171 | glyphs[i] < font.glyphToCharMap.length) { | ||
| 172 | font.glyphToCharMap[glyphs[i]] = (char)unicodes[i]; | ||
| 173 | } | ||
| 174 | } | ||
| 175 | } | ||
| 176 | |||
| 177 | public void charsToGlyphs(int count, char[] unicodes, int[] glyphs) { | ||
| 178 | |||
| 179 | for (int i=0; i<count; i++) { | ||
| 180 | int code; | ||
| 181 | if (needsJAremapping) { | ||
| 182 | code = remapJAChar(unicodes[i]); | ||
| 183 | } else { | ||
| 184 | code = unicodes[i]; // char is unsigned. | ||
| 185 | } | ||
| 186 | |||
| 187 | if (code >= HI_SURROGATE_START && | ||
| 188 | code <= HI_SURROGATE_END && i < count - 1) { | ||
| 189 | char low = unicodes[i + 1]; | ||
| 190 | |||
| 191 | if (low >= LO_SURROGATE_START && | ||
| 192 | low <= LO_SURROGATE_END) { | ||
| 193 | code = (code - HI_SURROGATE_START) * | ||
| 194 | 0x400 + low - LO_SURROGATE_START + 0x10000; | ||
| 195 | |||
| 196 | glyphs[i] = getGlyphFromCMAP(code); | ||
| 197 | i += 1; // Empty glyph slot after surrogate | ||
| 198 | glyphs[i] = INVISIBLE_GLYPH_ID; | ||
| 199 | continue; | ||
| 200 | } | ||
| 201 | } | ||
| 202 | glyphs[i] = getGlyphFromCMAP(code); | ||
| 203 | |||
| 204 | if (font.checkUseNatives() && | ||
| 205 | glyphs[i] < font.glyphToCharMap.length) { | ||
| 206 | font.glyphToCharMap[glyphs[i]] = (char)code; | ||
| 207 | } | ||
| 208 | |||
| 209 | } | ||
| 210 | } | ||
| 211 | |||
| 212 | /* This variant checks if shaping is needed and immediately | ||
| 213 | * returns true if it does. A caller of this method should be expecting | ||
| 214 | * to check the return type because it needs to know how to handle | ||
| 215 | * the character data for display. | ||
| 216 | */ | ||
| 217 | public boolean charsToGlyphsNS(int count, char[] unicodes, int[] glyphs) { | ||
| 218 | |||
| 219 | for (int i=0; i<count; i++) { | ||
| 220 | int code; | ||
| 221 | if (needsJAremapping) { | ||
| 222 | code = remapJAChar(unicodes[i]); | ||
| 223 | } else { | ||
| 224 | code = unicodes[i]; // char is unsigned. | ||
| 225 | } | ||
| 226 | |||
| 227 | if (code >= HI_SURROGATE_START && | ||
| 228 | code <= HI_SURROGATE_END && i < count - 1) { | ||
| 229 | char low = unicodes[i + 1]; | ||
| 230 | |||
| 231 | if (low >= LO_SURROGATE_START && | ||
| 232 | low <= LO_SURROGATE_END) { | ||
| 233 | code = (code - HI_SURROGATE_START) * | ||
| 234 | 0x400 + low - LO_SURROGATE_START + 0x10000; | ||
| 235 | glyphs[i + 1] = INVISIBLE_GLYPH_ID; | ||
| 236 | } | ||
| 237 | } | ||
| 238 | |||
| 239 | glyphs[i] = getGlyphFromCMAP(code); | ||
| 240 | if (font.checkUseNatives() && | ||
| 241 | glyphs[i] < font.glyphToCharMap.length) { | ||
| 242 | font.glyphToCharMap[glyphs[i]] = (char)code; | ||
| 243 | } | ||
| 244 | |||
| 245 | if (code < FontUtilities.MIN_LAYOUT_CHARCODE) { | ||
| 246 | continue; | ||
| 247 | } | ||
| 248 | else if (FontUtilities.isComplexCharCode(code)) { | ||
| 249 | return true; | ||
| 250 | } | ||
| 251 | else if (code >= 0x10000) { | ||
| 252 | i += 1; // Empty glyph slot after surrogate | ||
| 253 | continue; | ||
| 254 | } | ||
| 255 | } | ||
| 256 | |||
| 257 | return false; | ||
| 258 | } | ||
| 259 | |||
| 260 | /* A pretty good heuristic is that the cmap we are using | ||
| 261 | * supports 32 bit character codes. | ||
| 262 | */ | ||
| 263 | boolean hasSupplementaryChars() { | ||
| 264 | return | ||
| 265 | cmap instanceof CMap.CMapFormat8 || | ||
| 266 | cmap instanceof CMap.CMapFormat10 || | ||
| 267 | cmap instanceof CMap.CMapFormat12; | ||
| 268 | } | ||
| 269 | } | ||