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| 1 | /* | ||
| 2 | * Copyright (c) 2003, 2010, 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.awt.Font; | ||
| 29 | import java.awt.font.FontRenderContext; | ||
| 30 | import java.awt.geom.AffineTransform; | ||
| 31 | import java.lang.ref.Reference; | ||
| 32 | import java.lang.ref.SoftReference; | ||
| 33 | import java.util.concurrent.ConcurrentHashMap; | ||
| 34 | import java.util.Locale; | ||
| 35 | |||
| 36 | public abstract class Font2D { | ||
| 37 | |||
| 38 | /* Note: JRE and FONT_CONFIG ranks are identical. I don't know of a reason | ||
| 39 | * to distingish these. Possibly if a user adds fonts to the JRE font | ||
| 40 | * directory that are the same font as the ones specified in the font | ||
| 41 | * configuration but that is more likely to be the legitimate intention | ||
| 42 | * than a problem. One reason why these should be the same is that on | ||
| 43 | * Linux the JRE fonts ARE the font configuration fonts, and although I | ||
| 44 | * believe all are assigned FONT_CONFIG rank, it is conceivable that if | ||
| 45 | * this were not so, that some JRE font would not be allowed to joint the | ||
| 46 | * family of its siblings which were assigned FONT_CONFIG rank. Giving | ||
| 47 | * them the same rank is the easy solution for now at least. | ||
| 48 | */ | ||
| 49 | public static final int FONT_CONFIG_RANK = 2; | ||
| 50 | public static final int JRE_RANK = 2; | ||
| 51 | public static final int TTF_RANK = 3; | ||
| 52 | public static final int TYPE1_RANK = 4; | ||
| 53 | public static final int NATIVE_RANK = 5; | ||
| 54 | public static final int UNKNOWN_RANK = 6; | ||
| 55 | public static final int DEFAULT_RANK = 4; | ||
| 56 | |||
| 57 | private static final String[] boldNames = { | ||
| 58 | "bold", "demibold", "demi-bold", "demi bold", "negreta", "demi", }; | ||
| 59 | |||
| 60 | private static final String[] italicNames = { | ||
| 61 | "italic", "cursiva", "oblique", "inclined", }; | ||
| 62 | |||
| 63 | private static final String[] boldItalicNames = { | ||
| 64 | "bolditalic", "bold-italic", "bold italic", | ||
| 65 | "boldoblique", "bold-oblique", "bold oblique", | ||
| 66 | "demibold italic", "negreta cursiva","demi oblique", }; | ||
| 67 | |||
| 68 | private static final FontRenderContext DEFAULT_FRC = | ||
| 69 | new FontRenderContext(null, false, false); | ||
| 70 | |||
| 71 | public Font2DHandle handle; | ||
| 72 | protected String familyName; /* Family font name (english) */ | ||
| 73 | protected String fullName; /* Full font name (english) */ | ||
| 74 | protected int style = Font.PLAIN; | ||
| 75 | protected FontFamily family; | ||
| 76 | protected int fontRank = DEFAULT_RANK; | ||
| 77 | |||
| 78 | /* | ||
| 79 | * A mapper can be independent of the strike. | ||
| 80 | * Perhaps the reference to the mapper ought to be held on the | ||
| 81 | * scaler, as it may be implemented via scaler functionality anyway | ||
| 82 | * and so the mapper would be useless if its native portion was | ||
| 83 | * freed when the scaler was GC'd. | ||
| 84 | */ | ||
| 85 | protected CharToGlyphMapper mapper; | ||
| 86 | |||
| 87 | /* | ||
| 88 | * The strike cache is maintained per "Font2D" as that is the | ||
| 89 | * principal object by which you look up fonts. | ||
| 90 | * It means more Hashmaps, but look ups can be quicker because | ||
| 91 | * the map will have fewer entries, and there's no need to try to | ||
| 92 | * make the Font2D part of the key. | ||
| 93 | */ | ||
| 94 | protected ConcurrentHashMap<FontStrikeDesc, Reference> | ||
| 95 | strikeCache = new ConcurrentHashMap<FontStrikeDesc, Reference>(); | ||
| 96 | |||
| 97 | /* Store the last Strike in a Reference object. | ||
| 98 | * Similarly to the strike that was stored on a C++ font object, | ||
| 99 | * this is an optimisation which helps if multiple clients (ie | ||
| 100 | * typically SunGraphics2D instances) are using the same font, then | ||
| 101 | * as may be typical of many UIs, they are probably using it in the | ||
| 102 | * same style, so it can be a win to first quickly check if the last | ||
| 103 | * strike obtained from this Font2D satifies the needs of the next | ||
| 104 | * client too. | ||
| 105 | * This pre-supposes that a FontStrike is a shareable object, which | ||
| 106 | * it should. | ||
| 107 | */ | ||
| 108 | protected Reference lastFontStrike = new SoftReference(null); | ||
| 109 | |||
| 110 | /* | ||
| 111 | * POSSIBLE OPTIMISATION: | ||
| 112 | * Array of length 1024 elements of 64 bits indicating if a font | ||
| 113 | * contains these. This kind of information can be shared between | ||
| 114 | * all point sizes. | ||
| 115 | * if corresponding bit in knownBitmaskMap is set then canDisplayBitmaskMap | ||
| 116 | * is valid. This is 16Kbytes of data per composite font style. | ||
| 117 | * What about UTF-32 and surrogates? | ||
| 118 | * REMIND: This is too much storage. Probably can only cache this | ||
| 119 | * information for latin range, although possibly OK to store all | ||
| 120 | * for just the "logical" fonts. | ||
| 121 | * Or instead store arrays of subranges of 1024 bits (128 bytes) in | ||
| 122 | * the range below surrogate pairs. | ||
| 123 | */ | ||
| 124 | // protected long[] knownBitmaskMap; | ||
| 125 | // protected long[] canDisplayBitmaskMap; | ||
| 126 | |||
| 127 | /* Returns the "real" style of this Font2D. Eg the font face | ||
| 128 | * Lucida Sans Bold" has a real style of Font.BOLD, even though | ||
| 129 | * it may be able to used to simulate bold italic | ||
| 130 | */ | ||
| 131 | public int getStyle() { | ||
| 132 | return style; | ||
| 133 | } | ||
| 134 | protected void setStyle() { | ||
| 135 | |||
| 136 | String fName = fullName.toLowerCase(); | ||
| 137 | |||
| 138 | for (int i=0; i < boldItalicNames.length; i++) { | ||
| 139 | if (fName.indexOf(boldItalicNames[i]) != -1) { | ||
| 140 | style = Font.BOLD|Font.ITALIC; | ||
| 141 | return; | ||
| 142 | } | ||
| 143 | } | ||
| 144 | |||
| 145 | for (int i=0; i < italicNames.length; i++) { | ||
| 146 | if (fName.indexOf(italicNames[i]) != -1) { | ||
| 147 | style = Font.ITALIC; | ||
| 148 | return; | ||
| 149 | } | ||
| 150 | } | ||
| 151 | |||
| 152 | for (int i=0; i < boldNames.length; i++) { | ||
| 153 | if (fName.indexOf(boldNames[i]) != -1 ) { | ||
| 154 | style = Font.BOLD; | ||
| 155 | return; | ||
| 156 | } | ||
| 157 | } | ||
| 158 | } | ||
| 159 | |||
| 160 | |||
| 161 | int getRank() { | ||
| 162 | return fontRank; | ||
| 163 | } | ||
| 164 | |||
| 165 | void setRank(int rank) { | ||
| 166 | fontRank = rank; | ||
| 167 | } | ||
| 168 | |||
| 169 | abstract CharToGlyphMapper getMapper(); | ||
| 170 | |||
| 171 | |||
| 172 | |||
| 173 | /* This isn't very efficient but its infrequently used. | ||
| 174 | * StandardGlyphVector uses it when the client assigns the glyph codes. | ||
| 175 | * These may not be valid. This validates them substituting the missing | ||
| 176 | * glyph elsewhere. | ||
| 177 | */ | ||
| 178 | protected int getValidatedGlyphCode(int glyphCode) { | ||
| 179 | if (glyphCode < 0 || glyphCode >= getMapper().getNumGlyphs()) { | ||
| 180 | glyphCode = getMapper().getMissingGlyphCode(); | ||
| 181 | } | ||
| 182 | return glyphCode; | ||
| 183 | } | ||
| 184 | |||
| 185 | /* | ||
| 186 | * Creates an appropriate strike for the Font2D subclass | ||
| 187 | */ | ||
| 188 | abstract FontStrike createStrike(FontStrikeDesc desc); | ||
| 189 | |||
| 190 | /* this may be useful for APIs like canDisplay where the answer | ||
| 191 | * is dependent on the font and its scaler, but not the strike. | ||
| 192 | * If no strike has ever been returned, then create a one that matches | ||
| 193 | * this font with the default FRC. It will become the lastStrike and | ||
| 194 | * there's a good chance that the next call will be to get exactly that | ||
| 195 | * strike. | ||
| 196 | */ | ||
| 197 | public FontStrike getStrike(Font font) { | ||
| 198 | FontStrike strike = (FontStrike)lastFontStrike.get(); | ||
| 199 | if (strike != null) { | ||
| 200 | return strike; | ||
| 201 | } else { | ||
| 202 | return getStrike(font, DEFAULT_FRC); | ||
| 203 | } | ||
| 204 | } | ||
| 205 | |||
| 206 | /* SunGraphics2D has font, tx, aa and fm. From this info | ||
| 207 | * can get a Strike object from the cache, creating it if necessary. | ||
| 208 | * This code is designed for multi-threaded access. | ||
| 209 | * For that reason it creates a local FontStrikeDesc rather than filling | ||
| 210 | * in a shared one. Up to two AffineTransforms and one FontStrikeDesc will | ||
| 211 | * be created by every lookup. This appears to perform more than | ||
| 212 | * adequately. But it may make sense to expose FontStrikeDesc | ||
| 213 | * as a parameter so a caller can use its own. | ||
| 214 | * In such a case if a FontStrikeDesc is stored as a key then | ||
| 215 | * we would need to use a private copy. | ||
| 216 | * | ||
| 217 | * Note that this code doesn't prevent two threads from creating | ||
| 218 | * two different FontStrike instances and having one of the threads | ||
| 219 | * overwrite the other in the map. This is likely to be a rare | ||
| 220 | * occurrence and the only consequence is that these callers will have | ||
| 221 | * different instances of the strike, and there'd be some duplication of | ||
| 222 | * population of the strikes. However since users of these strikes are | ||
| 223 | * transient, then the one that was overwritten would soon be freed. | ||
| 224 | * If there is any problem then a small synchronized block would be | ||
| 225 | * required with its attendant consequences for MP scaleability. | ||
| 226 | */ | ||
| 227 | public FontStrike getStrike(Font font, AffineTransform devTx, | ||
| 228 | int aa, int fm) { | ||
| 229 | |||
| 230 | /* Create the descriptor which is used to identify a strike | ||
| 231 | * in the strike cache/map. A strike is fully described by | ||
| 232 | * the attributes of this descriptor. | ||
| 233 | */ | ||
| 234 | /* REMIND: generating garbage and doing computation here in order | ||
| 235 | * to include pt size in the tx just for a lookup! Figure out a | ||
| 236 | * better way. | ||
| 237 | */ | ||
| 238 | double ptSize = font.getSize2D(); | ||
| 239 | AffineTransform glyphTx = (AffineTransform)devTx.clone(); | ||
| 240 | glyphTx.scale(ptSize, ptSize); | ||
| 241 | if (font.isTransformed()) { | ||
| 242 | glyphTx.concatenate(font.getTransform()); | ||
| 243 | } | ||
| 244 | if (glyphTx.getTranslateX() != 0 || glyphTx.getTranslateY() != 0) { | ||
| 245 | glyphTx.setTransform(glyphTx.getScaleX(), | ||
| 246 | glyphTx.getShearY(), | ||
| 247 | glyphTx.getShearX(), | ||
| 248 | glyphTx.getScaleY(), | ||
| 249 | 0.0, 0.0); | ||
| 250 | } | ||
| 251 | FontStrikeDesc desc = new FontStrikeDesc(devTx, glyphTx, | ||
| 252 | font.getStyle(), aa, fm); | ||
| 253 | return getStrike(desc, false); | ||
| 254 | } | ||
| 255 | |||
| 256 | public FontStrike getStrike(Font font, AffineTransform devTx, | ||
| 257 | AffineTransform glyphTx, | ||
| 258 | int aa, int fm) { | ||
| 259 | |||
| 260 | /* Create the descriptor which is used to identify a strike | ||
| 261 | * in the strike cache/map. A strike is fully described by | ||
| 262 | * the attributes of this descriptor. | ||
| 263 | */ | ||
| 264 | FontStrikeDesc desc = new FontStrikeDesc(devTx, glyphTx, | ||
| 265 | font.getStyle(), aa, fm); | ||
| 266 | return getStrike(desc, false); | ||
| 267 | } | ||
| 268 | |||
| 269 | public FontStrike getStrike(Font font, FontRenderContext frc) { | ||
| 270 | |||
| 271 | AffineTransform at = frc.getTransform(); | ||
| 272 | double ptSize = font.getSize2D(); | ||
| 273 | at.scale(ptSize, ptSize); | ||
| 274 | if (font.isTransformed()) { | ||
| 275 | at.concatenate(font.getTransform()); | ||
| 276 | if (at.getTranslateX() != 0 || at.getTranslateY() != 0) { | ||
| 277 | at.setTransform(at.getScaleX(), | ||
| 278 | at.getShearY(), | ||
| 279 | at.getShearX(), | ||
| 280 | at.getScaleY(), | ||
| 281 | 0.0, 0.0); | ||
| 282 | } | ||
| 283 | } | ||
| 284 | int aa = FontStrikeDesc.getAAHintIntVal(this, font, frc); | ||
| 285 | int fm = FontStrikeDesc.getFMHintIntVal(frc.getFractionalMetricsHint()); | ||
| 286 | FontStrikeDesc desc = new FontStrikeDesc(frc.getTransform(), | ||
| 287 | at, font.getStyle(), | ||
| 288 | aa, fm); | ||
| 289 | return getStrike(desc, false); | ||
| 290 | } | ||
| 291 | |||
| 292 | FontStrike getStrike(FontStrikeDesc desc) { | ||
| 293 | return getStrike(desc, true); | ||
| 294 | } | ||
| 295 | |||
| 296 | private FontStrike getStrike(FontStrikeDesc desc, boolean copy) { | ||
| 297 | /* Before looking in the map, see if the descriptor matches the | ||
| 298 | * last strike returned from this Font2D. This should often be a win | ||
| 299 | * since its common for the same font, in the same size to be | ||
| 300 | * used frequently, for example in many parts of a UI. | ||
| 301 | * | ||
| 302 | * If its not the same then we use the descriptor to locate a | ||
| 303 | * Reference to the strike. If it exists and points to a strike, | ||
| 304 | * then we update the last strike to refer to that and return it. | ||
| 305 | * | ||
| 306 | * If the key isn't in the map, or its reference object has been | ||
| 307 | * collected, then we create a new strike, put it in the map and | ||
| 308 | * set it to be the last strike. | ||
| 309 | */ | ||
| 310 | FontStrike strike = (FontStrike)lastFontStrike.get(); | ||
| 311 | if (strike != null && desc.equals(strike.desc)) { | ||
| 312 | //strike.lastlookupTime = System.currentTimeMillis(); | ||
| 313 | return strike; | ||
| 314 | } else { | ||
| 315 | Reference strikeRef = strikeCache.get(desc); | ||
| 316 | if (strikeRef != null) { | ||
| 317 | strike = (FontStrike)strikeRef.get(); | ||
| 318 | if (strike != null) { | ||
| 319 | //strike.lastlookupTime = System.currentTimeMillis(); | ||
| 320 | lastFontStrike = new SoftReference(strike); | ||
| 321 | StrikeCache.refStrike(strike); | ||
| 322 | return strike; | ||
| 323 | } | ||
| 324 | } | ||
| 325 | /* When we create a new FontStrike instance, we *must* | ||
| 326 | * ask the StrikeCache for a reference. We must then ensure | ||
| 327 | * this reference remains reachable, by storing it in the | ||
| 328 | * Font2D's strikeCache map. | ||
| 329 | * So long as the Reference is there (reachable) then if the | ||
| 330 | * reference is cleared, it will be enqueued for disposal. | ||
| 331 | * If for some reason we explicitly remove this reference, it | ||
| 332 | * must only be done when holding a strong reference to the | ||
| 333 | * referent (the FontStrike), or if the reference is cleared, | ||
| 334 | * then we must explicitly "dispose" of the native resources. | ||
| 335 | * The only place this currently happens is in this same method, | ||
| 336 | * where we find a cleared reference and need to overwrite it | ||
| 337 | * here with a new reference. | ||
| 338 | * Clearing the whilst holding a strong reference, should only | ||
| 339 | * be done if the | ||
| 340 | */ | ||
| 341 | if (copy) { | ||
| 342 | desc = new FontStrikeDesc(desc); | ||
| 343 | } | ||
| 344 | strike = createStrike(desc); | ||
| 345 | //StrikeCache.addStrike(); | ||
| 346 | /* If we are creating many strikes on this font which | ||
| 347 | * involve non-quadrant rotations, or more general | ||
| 348 | * transforms which include shears, then force the use | ||
| 349 | * of weak references rather than soft references. | ||
| 350 | * This means that it won't live much beyond the next GC, | ||
| 351 | * which is what we want for what is likely a transient strike. | ||
| 352 | */ | ||
| 353 | int txType = desc.glyphTx.getType(); | ||
| 354 | if (txType == AffineTransform.TYPE_GENERAL_TRANSFORM || | ||
| 355 | (txType & AffineTransform.TYPE_GENERAL_ROTATION) != 0 && | ||
| 356 | strikeCache.size() > 10) { | ||
| 357 | strikeRef = StrikeCache.getStrikeRef(strike, true); | ||
| 358 | } else { | ||
| 359 | strikeRef = StrikeCache.getStrikeRef(strike); | ||
| 360 | } | ||
| 361 | strikeCache.put(desc, strikeRef); | ||
| 362 | //strike.lastlookupTime = System.currentTimeMillis(); | ||
| 363 | lastFontStrike = new SoftReference(strike); | ||
| 364 | StrikeCache.refStrike(strike); | ||
| 365 | return strike; | ||
| 366 | } | ||
| 367 | } | ||
| 368 | |||
| 369 | void removeFromCache(FontStrikeDesc desc) { | ||
| 370 | Reference ref = strikeCache.get(desc); | ||
| 371 | if (ref != null) { | ||
| 372 | Object o = ref.get(); | ||
| 373 | if (o == null) { | ||
| 374 | strikeCache.remove(desc); | ||
| 375 | } | ||
| 376 | } | ||
| 377 | } | ||
| 378 | |||
| 379 | /** | ||
| 380 | * The length of the metrics array must be >= 8. This method will | ||
| 381 | * store the following elements in that array before returning: | ||
| 382 | * metrics[0]: ascent | ||
| 383 | * metrics[1]: descent | ||
| 384 | * metrics[2]: leading | ||
| 385 | * metrics[3]: max advance | ||
| 386 | * metrics[4]: strikethrough offset | ||
| 387 | * metrics[5]: strikethrough thickness | ||
| 388 | * metrics[6]: underline offset | ||
| 389 | * metrics[7]: underline thickness | ||
| 390 | */ | ||
| 391 | public void getFontMetrics(Font font, AffineTransform at, | ||
| 392 | Object aaHint, Object fmHint, | ||
| 393 | float metrics[]) { | ||
| 394 | /* This is called in just one place in Font with "at" == identity. | ||
| 395 | * Perhaps this can be eliminated. | ||
| 396 | */ | ||
| 397 | int aa = FontStrikeDesc.getAAHintIntVal(aaHint, this, font.getSize()); | ||
| 398 | int fm = FontStrikeDesc.getFMHintIntVal(fmHint); | ||
| 399 | FontStrike strike = getStrike(font, at, aa, fm); | ||
| 400 | StrikeMetrics strikeMetrics = strike.getFontMetrics(); | ||
| 401 | metrics[0] = strikeMetrics.getAscent(); | ||
| 402 | metrics[1] = strikeMetrics.getDescent(); | ||
| 403 | metrics[2] = strikeMetrics.getLeading(); | ||
| 404 | metrics[3] = strikeMetrics.getMaxAdvance(); | ||
| 405 | |||
| 406 | getStyleMetrics(font.getSize2D(), metrics, 4); | ||
| 407 | } | ||
| 408 | |||
| 409 | /** | ||
| 410 | * The length of the metrics array must be >= offset+4, and offset must be | ||
| 411 | * >= 0. Typically offset is 4. This method will | ||
| 412 | * store the following elements in that array before returning: | ||
| 413 | * metrics[off+0]: strikethrough offset | ||
| 414 | * metrics[off+1]: strikethrough thickness | ||
| 415 | * metrics[off+2]: underline offset | ||
| 416 | * metrics[off+3]: underline thickness | ||
| 417 | * | ||
| 418 | * Note that this implementation simply returns default values; | ||
| 419 | * subclasses can override this method to provide more accurate values. | ||
| 420 | */ | ||
| 421 | public void getStyleMetrics(float pointSize, float[] metrics, int offset) { | ||
| 422 | metrics[offset] = -metrics[0] / 2.5f; | ||
| 423 | metrics[offset+1] = pointSize / 12; | ||
| 424 | metrics[offset+2] = metrics[offset+1] / 1.5f; | ||
| 425 | metrics[offset+3] = metrics[offset+1]; | ||
| 426 | } | ||
| 427 | |||
| 428 | /** | ||
| 429 | * The length of the metrics array must be >= 4. This method will | ||
| 430 | * store the following elements in that array before returning: | ||
| 431 | * metrics[0]: ascent | ||
| 432 | * metrics[1]: descent | ||
| 433 | * metrics[2]: leading | ||
| 434 | * metrics[3]: max advance | ||
| 435 | */ | ||
| 436 | public void getFontMetrics(Font font, FontRenderContext frc, | ||
| 437 | float metrics[]) { | ||
| 438 | StrikeMetrics strikeMetrics = getStrike(font, frc).getFontMetrics(); | ||
| 439 | metrics[0] = strikeMetrics.getAscent(); | ||
| 440 | metrics[1] = strikeMetrics.getDescent(); | ||
| 441 | metrics[2] = strikeMetrics.getLeading(); | ||
| 442 | metrics[3] = strikeMetrics.getMaxAdvance(); | ||
| 443 | } | ||
| 444 | |||
| 445 | /* Currently the layout code calls this. May be better for layout code | ||
| 446 | * to check the font class before attempting to run, rather than needing | ||
| 447 | * to promote this method up from TrueTypeFont | ||
| 448 | */ | ||
| 449 | byte[] getTableBytes(int tag) { | ||
| 450 | return null; | ||
| 451 | } | ||
| 452 | |||
| 453 | /* for layout code */ | ||
| 454 | protected long getUnitsPerEm() { | ||
| 455 | return 2048; | ||
| 456 | } | ||
| 457 | |||
| 458 | boolean supportsEncoding(String encoding) { | ||
| 459 | return false; | ||
| 460 | } | ||
| 461 | |||
| 462 | public boolean canDoStyle(int style) { | ||
| 463 | return (style == this.style); | ||
| 464 | } | ||
| 465 | |||
| 466 | /* | ||
| 467 | * All the important subclasses override this which is principally for | ||
| 468 | * the TrueType 'gasp' table. | ||
| 469 | */ | ||
| 470 | public boolean useAAForPtSize(int ptsize) { | ||
| 471 | return true; | ||
| 472 | } | ||
| 473 | |||
| 474 | public boolean hasSupplementaryChars() { | ||
| 475 | return false; | ||
| 476 | } | ||
| 477 | |||
| 478 | /* The following methods implement public methods on java.awt.Font */ | ||
| 479 | public String getPostscriptName() { | ||
| 480 | return fullName; | ||
| 481 | } | ||
| 482 | |||
| 483 | public String getFontName(Locale l) { | ||
| 484 | return fullName; | ||
| 485 | } | ||
| 486 | |||
| 487 | public String getFamilyName(Locale l) { | ||
| 488 | return familyName; | ||
| 489 | } | ||
| 490 | |||
| 491 | public int getNumGlyphs() { | ||
| 492 | return getMapper().getNumGlyphs(); | ||
| 493 | } | ||
| 494 | |||
| 495 | public int charToGlyph(int wchar) { | ||
| 496 | return getMapper().charToGlyph(wchar); | ||
| 497 | } | ||
| 498 | |||
| 499 | public int getMissingGlyphCode() { | ||
| 500 | return getMapper().getMissingGlyphCode(); | ||
| 501 | } | ||
| 502 | |||
| 503 | public boolean canDisplay(char c) { | ||
| 504 | return getMapper().canDisplay(c); | ||
| 505 | } | ||
| 506 | |||
| 507 | public boolean canDisplay(int cp) { | ||
| 508 | return getMapper().canDisplay(cp); | ||
| 509 | } | ||
| 510 | |||
| 511 | public byte getBaselineFor(char c) { | ||
| 512 | return Font.ROMAN_BASELINE; | ||
| 513 | } | ||
| 514 | |||
| 515 | public float getItalicAngle(Font font, AffineTransform at, | ||
| 516 | Object aaHint, Object fmHint) { | ||
| 517 | /* hardwire psz=12 as that's typical and AA vs non-AA for 'gasp' mode | ||
| 518 | * isn't important for the caret slope of this rarely used API. | ||
| 519 | */ | ||
| 520 | int aa = FontStrikeDesc.getAAHintIntVal(aaHint, this, 12); | ||
| 521 | int fm = FontStrikeDesc.getFMHintIntVal(fmHint); | ||
| 522 | FontStrike strike = getStrike(font, at, aa, fm); | ||
| 523 | StrikeMetrics metrics = strike.getFontMetrics(); | ||
| 524 | if (metrics.ascentY == 0 || metrics.ascentX == 0) { | ||
| 525 | return 0f; | ||
| 526 | } else { | ||
| 527 | /* ascent is "up" from the baseline so its typically | ||
| 528 | * a negative value, so we need to compensate | ||
| 529 | */ | ||
| 530 | return metrics.ascentX/-metrics.ascentY; | ||
| 531 | } | ||
| 532 | } | ||
| 533 | |||
| 534 | } | ||