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| 1 | |
| 2 /* | |
| 3 * Copyright 2013 The Android Open Source Project | |
| 4 * | |
| 5 * Use of this source code is governed by a BSD-style license that can be | |
| 6 * found in the LICENSE file. | |
| 7 */ | |
| 8 | |
| 9 #include "SkFontConfigInterface.h" | |
| 10 #include "SkTypeface_android.h" | |
| 11 | |
| 12 #include "SkFontConfigParser_android.h" | |
| 13 #include "SkFontConfigTypeface.h" | |
| 14 #include "SkFontHost_FreeType_common.h" | |
| 15 #include "SkFontMgr.h" | |
| 16 #include "SkGlyphCache.h" | |
| 17 #include "SkPaint.h" | |
| 18 #include "SkString.h" | |
| 19 #include "SkStream.h" | |
| 20 #include "SkThread.h" | |
| 21 #include "SkTypefaceCache.h" | |
| 22 #include "SkTArray.h" | |
| 23 #include "SkTDict.h" | |
| 24 #include "SkTSearch.h" | |
| 25 | |
| 26 #include <stdio.h> | |
| 27 #include <string.h> | |
| 28 | |
| 29 #ifndef SK_DEBUG_FONTS | |
| 30 #define SK_DEBUG_FONTS 0 | |
| 31 #endif | |
| 32 | |
| 33 #if SK_DEBUG_FONTS | |
| 34 #define DEBUG_FONT(args) SkDebugf args | |
| 35 #else | |
| 36 #define DEBUG_FONT(args) | |
| 37 #endif | |
| 38 | |
| 39 /////////////////////////////////////////////////////////////////////////////// | |
| 40 | |
| 41 // For test only. | |
| 42 static const char* gTestMainConfigFile = NULL; | |
| 43 static const char* gTestFallbackConfigFile = NULL; | |
| 44 static const char* gTestFontFilePrefix = NULL; | |
| 45 | |
| 46 /////////////////////////////////////////////////////////////////////////////// | |
| 47 | |
| 48 typedef int32_t FontRecID; | |
| 49 #define INVALID_FONT_REC_ID -1 | |
| 50 | |
| 51 typedef int32_t FamilyRecID; | |
| 52 #define INVALID_FAMILY_REC_ID -1 | |
| 53 | |
| 54 // used to record our notion of the pre-existing fonts | |
| 55 struct FontRec { | |
| 56 SkAutoTUnref<SkTypeface> fTypeface; | |
| 57 SkString fFileName; | |
| 58 SkTypeface::Style fStyle; | |
| 59 bool fIsValid; | |
| 60 FamilyRecID fFamilyRecID; | |
| 61 }; | |
| 62 | |
| 63 struct FamilyRec { | |
| 64 FamilyRec() { | |
| 65 memset(fFontRecID, INVALID_FONT_REC_ID, sizeof(fFontRecID)); | |
| 66 } | |
| 67 | |
| 68 static const int FONT_STYLE_COUNT = 4; | |
| 69 FontRecID fFontRecID[FONT_STYLE_COUNT]; | |
| 70 bool fIsFallbackFont; | |
| 71 SkString fFallbackName; | |
| 72 SkPaintOptionsAndroid fPaintOptions; | |
| 73 }; | |
| 74 | |
| 75 | |
| 76 typedef SkTDArray<FamilyRecID> FallbackFontList; | |
| 77 | |
| 78 class SkFontConfigInterfaceAndroid : public SkFontConfigInterface { | |
| 79 public: | |
| 80 SkFontConfigInterfaceAndroid(SkTDArray<FontFamily*>& fontFamilies); | |
| 81 virtual ~SkFontConfigInterfaceAndroid(); | |
| 82 | |
| 83 virtual bool matchFamilyName(const char familyName[], | |
| 84 SkTypeface::Style requested, | |
| 85 FontIdentity* outFontIdentifier, | |
| 86 SkString* outFamilyName, | |
| 87 SkTypeface::Style* outStyle) SK_OVERRIDE; | |
| 88 virtual SkStream* openStream(const FontIdentity&) SK_OVERRIDE; | |
| 89 | |
| 90 // new APIs | |
| 91 virtual SkDataTable* getFamilyNames() SK_OVERRIDE; | |
| 92 virtual bool matchFamilySet(const char inFamilyName[], | |
| 93 SkString* outFamilyName, | |
| 94 SkTArray<FontIdentity>*) SK_OVERRIDE; | |
| 95 | |
| 96 /** | |
| 97 * Get the family name of the font in the default fallback font list that | |
| 98 * contains the specified chararacter. if no font is found, returns false. | |
| 99 */ | |
| 100 bool getFallbackFamilyNameForChar(SkUnichar uni, const char* lang, SkString* name); | |
| 101 | |
| 102 private: | |
| 103 void addFallbackFamily(FamilyRecID fontRecID); | |
| 104 SkTypeface* getTypefaceForFontRec(FontRecID fontRecID); | |
| 105 FallbackFontList* getCurrentLocaleFallbackFontList(); | |
| 106 FallbackFontList* findFallbackFontList(const SkLanguage& lang, bool isOrigin al = true); | |
| 107 | |
| 108 SkTArray<FontRec, true> fFonts; | |
| 109 SkTArray<FamilyRec, true> fFontFamilies; | |
| 110 SkTDict<FamilyRecID> fFamilyNameDict; | |
| 111 FamilyRecID fDefaultFamilyRecID; | |
| 112 | |
| 113 // (SkLanguage)<->(fallback chain index) translation | |
| 114 SkTDict<FallbackFontList*> fFallbackFontDict; | |
| 115 SkTDict<FallbackFontList*> fFallbackFontAliasDict; | |
| 116 FallbackFontList fDefaultFallbackList; | |
| 117 | |
| 118 // fallback info for current locale | |
| 119 SkString fCachedLocale; | |
| 120 FallbackFontList* fLocaleFallbackFontList; | |
| 121 }; | |
| 122 | |
| 123 /////////////////////////////////////////////////////////////////////////////// | |
| 124 | |
| 125 SK_DECLARE_STATIC_MUTEX(gGetSingletonInterfaceMutex); | |
| 126 static SkFontConfigInterfaceAndroid* getSingletonInterface() { | |
| 127 static SkFontConfigInterfaceAndroid* gFontConfigInterface; | |
| 128 | |
| 129 SkAutoMutexAcquire ac(gGetSingletonInterfaceMutex); | |
| 130 if (NULL == gFontConfigInterface) { | |
| 131 // load info from a configuration file that we can use to populate the | |
| 132 // system/fallback font structures | |
| 133 SkTDArray<FontFamily*> fontFamilies; | |
| 134 if (!gTestMainConfigFile) { | |
| 135 SkFontConfigParser::GetFontFamilies(fontFamilies); | |
| 136 } else { | |
| 137 SkFontConfigParser::GetTestFontFamilies(fontFamilies, gTestMainConfi gFile, | |
| 138 gTestFallbackConfigFile); | |
| 139 } | |
| 140 | |
| 141 gFontConfigInterface = new SkFontConfigInterfaceAndroid(fontFamilies); | |
| 142 | |
| 143 // cleanup the data we received from the parser | |
| 144 fontFamilies.deleteAll(); | |
| 145 } | |
| 146 return gFontConfigInterface; | |
| 147 } | |
| 148 | |
| 149 SkFontConfigInterface* SkFontConfigInterface::GetSingletonDirectInterface(SkBase Mutex*) { | |
| 150 // Doesn't need passed-in mutex because getSingletonInterface() uses one | |
| 151 return getSingletonInterface(); | |
| 152 } | |
| 153 | |
| 154 /////////////////////////////////////////////////////////////////////////////// | |
| 155 | |
| 156 static bool has_font(const SkTArray<FontRec, true>& array, const SkString& filen ame) { | |
| 157 for (int i = 0; i < array.count(); i++) { | |
| 158 if (array[i].fFileName == filename) { | |
| 159 return true; | |
| 160 } | |
| 161 } | |
| 162 return false; | |
| 163 } | |
| 164 | |
| 165 #ifndef SK_FONT_FILE_PREFIX | |
| 166 #define SK_FONT_FILE_PREFIX "/fonts/" | |
| 167 #endif | |
| 168 | |
| 169 static void get_path_for_sys_fonts(SkString* full, const SkString& name) { | |
| 170 if (gTestFontFilePrefix) { | |
| 171 full->set(gTestFontFilePrefix); | |
| 172 } else { | |
| 173 full->set(getenv("ANDROID_ROOT")); | |
| 174 full->append(SK_FONT_FILE_PREFIX); | |
| 175 } | |
| 176 full->append(name); | |
| 177 } | |
| 178 | |
| 179 static void insert_into_name_dict(SkTDict<FamilyRecID>& familyNameDict, | |
| 180 const char* name, FamilyRecID familyRecID) { | |
| 181 SkAutoAsciiToLC tolc(name); | |
| 182 if (familyNameDict.find(tolc.lc())) { | |
| 183 SkDebugf("---- system font attempting to use a the same name [%s] for" | |
| 184 "multiple families. skipping subsequent occurrences", tolc.lc() ); | |
| 185 } else { | |
| 186 familyNameDict.set(tolc.lc(), familyRecID); | |
| 187 } | |
| 188 } | |
| 189 | |
| 190 /////////////////////////////////////////////////////////////////////////////// | |
| 191 | |
| 192 SkFontConfigInterfaceAndroid::SkFontConfigInterfaceAndroid(SkTDArray<FontFamily* >& fontFamilies) : | |
| 193 fFonts(fontFamilies.count()), | |
| 194 fFontFamilies(fontFamilies.count() / FamilyRec::FONT_STYLE_COUNT), | |
| 195 fFamilyNameDict(1024), | |
| 196 fDefaultFamilyRecID(INVALID_FAMILY_REC_ID), | |
| 197 fFallbackFontDict(128), | |
| 198 fFallbackFontAliasDict(128), | |
| 199 fLocaleFallbackFontList(NULL) { | |
| 200 | |
| 201 for (int i = 0; i < fontFamilies.count(); ++i) { | |
| 202 FontFamily* family = fontFamilies[i]; | |
| 203 | |
| 204 // defer initializing the familyRec until we can be sure that at least | |
| 205 // one of it's children contains a valid font file | |
| 206 FamilyRec* familyRec = NULL; | |
| 207 FamilyRecID familyRecID = INVALID_FAMILY_REC_ID; | |
| 208 | |
| 209 for (int j = 0; j < family->fFontFiles.count(); ++j) { | |
| 210 SkString filename; | |
| 211 get_path_for_sys_fonts(&filename, family->fFontFiles[j].fFileName); | |
| 212 | |
| 213 if (has_font(fFonts, filename)) { | |
| 214 SkDebugf("---- system font and fallback font files specify a dup licate " | |
| 215 "font %s, skipping the second occurrence", filename.c_st r()); | |
| 216 continue; | |
| 217 } | |
| 218 | |
| 219 FontRec& fontRec = fFonts.push_back(); | |
| 220 fontRec.fFileName = filename; | |
| 221 fontRec.fStyle = SkTypeface::kNormal; | |
| 222 fontRec.fIsValid = false; | |
| 223 fontRec.fFamilyRecID = familyRecID; | |
| 224 | |
| 225 const FontRecID fontRecID = fFonts.count() - 1; | |
| 226 | |
| 227 SkAutoTUnref<SkStream> stream(SkStream::NewFromFile(filename.c_str() )); | |
| 228 if (stream.get() != NULL) { | |
| 229 bool isFixedWidth; | |
| 230 SkString name; | |
| 231 fontRec.fIsValid = SkTypeface_FreeType::ScanFont(stream.get(), 0 , | |
| 232 &name, &fontRec .fStyle, | |
| 233 &isFixedWidth); | |
| 234 } else { | |
| 235 if (!family->fIsFallbackFont) { | |
| 236 SkDebugf("---- failed to open <%s> as a font\n", filename.c_ str()); | |
| 237 } | |
| 238 } | |
| 239 | |
| 240 if (fontRec.fIsValid) { | |
| 241 DEBUG_FONT(("---- SystemFonts[%d][%d] fallback=%d file=%s", | |
| 242 i, fFonts.count() - 1, family->fIsFallbackFont, filen ame.c_str())); | |
| 243 } else { | |
| 244 DEBUG_FONT(("---- SystemFonts[%d][%d] fallback=%d file=%s (INVAL ID)", | |
| 245 i, fFonts.count() - 1, family->fIsFallbackFont, filen ame.c_str())); | |
| 246 continue; | |
| 247 } | |
| 248 | |
| 249 // create a familyRec now that we know that at least one font in | |
| 250 // the family is valid | |
| 251 if (familyRec == NULL) { | |
| 252 familyRec = &fFontFamilies.push_back(); | |
| 253 familyRecID = fFontFamilies.count() - 1; | |
| 254 fontRec.fFamilyRecID = familyRecID; | |
| 255 | |
| 256 familyRec->fIsFallbackFont = family->fIsFallbackFont; | |
| 257 familyRec->fPaintOptions = family->fFontFiles[j].fPaintOptions; | |
| 258 | |
| 259 } else if (familyRec->fPaintOptions != family->fFontFiles[j].fPaintO ptions) { | |
| 260 SkDebugf("Every font file within a family must have identical" | |
| 261 "language and variant attributes"); | |
| 262 sk_throw(); | |
| 263 } | |
| 264 | |
| 265 // add this font to the current familyRec | |
| 266 if (INVALID_FONT_REC_ID != familyRec->fFontRecID[fontRec.fStyle]) { | |
| 267 DEBUG_FONT(("Overwriting familyRec for style[%d] old,new:(%d,%d) ", | |
| 268 fontRec.fStyle, familyRec->fFontRecID[fontRec.fStyle ], | |
| 269 fontRecID)); | |
| 270 } | |
| 271 familyRec->fFontRecID[fontRec.fStyle] = fontRecID; | |
| 272 } | |
| 273 | |
| 274 if (familyRec) { | |
| 275 if (familyRec->fIsFallbackFont) { | |
| 276 // add the font to the appropriate fallback chains and also inse rt a | |
| 277 // unique name into the familyNameDict for internal usage | |
| 278 addFallbackFamily(familyRecID); | |
| 279 } else { | |
| 280 // add the names that map to this family to the dictionary for e asy lookup | |
| 281 const SkTArray<SkString>& names = family->fNames; | |
| 282 if (names.empty()) { | |
| 283 SkDEBUGFAIL("ERROR: non-fallback font with no name"); | |
| 284 continue; | |
| 285 } | |
| 286 | |
| 287 for (int i = 0; i < names.count(); i++) { | |
| 288 insert_into_name_dict(fFamilyNameDict, names[i].c_str(), fam ilyRecID); | |
| 289 } | |
| 290 } | |
| 291 } | |
| 292 } | |
| 293 | |
| 294 DEBUG_FONT(("---- We have %d system fonts", fFonts.count())); | |
| 295 | |
| 296 if (fFontFamilies.count() > 0) { | |
| 297 fDefaultFamilyRecID = 0; | |
| 298 } | |
| 299 | |
| 300 // scans the default fallback font chain, adding every entry to every other | |
| 301 // fallback font chain to which it does not belong. this results in every | |
| 302 // language-specific fallback font chain having all of its fallback fonts at | |
| 303 // the front of the chain, and everything else at the end. | |
| 304 FallbackFontList* fallbackList; | |
| 305 SkTDict<FallbackFontList*>::Iter iter(fFallbackFontDict); | |
| 306 const char* fallbackLang = iter.next(&fallbackList); | |
| 307 while(fallbackLang != NULL) { | |
| 308 for (int i = 0; i < fDefaultFallbackList.count(); i++) { | |
| 309 FamilyRecID familyRecID = fDefaultFallbackList[i]; | |
| 310 const SkString& fontLang = fFontFamilies[familyRecID].fPaintOptions. getLanguage().getTag(); | |
| 311 if (strcmp(fallbackLang, fontLang.c_str()) != 0) { | |
| 312 fallbackList->push(familyRecID); | |
| 313 } | |
| 314 } | |
| 315 // move to the next fallback list in the dictionary | |
| 316 fallbackLang = iter.next(&fallbackList); | |
| 317 } | |
| 318 } | |
| 319 | |
| 320 SkFontConfigInterfaceAndroid::~SkFontConfigInterfaceAndroid() { | |
| 321 // iterate through and cleanup fFallbackFontDict | |
| 322 SkTDict<FallbackFontList*>::Iter iter(fFallbackFontDict); | |
| 323 FallbackFontList* fallbackList; | |
| 324 while(iter.next(&fallbackList) != NULL) { | |
| 325 SkDELETE(fallbackList); | |
| 326 } | |
| 327 } | |
| 328 | |
| 329 void SkFontConfigInterfaceAndroid::addFallbackFamily(FamilyRecID familyRecID) { | |
| 330 SkASSERT(familyRecID < fFontFamilies.count()); | |
| 331 FamilyRec& familyRec = fFontFamilies[familyRecID]; | |
| 332 SkASSERT(familyRec.fIsFallbackFont); | |
| 333 | |
| 334 // add the fallback family to the name dictionary. This is | |
| 335 // needed by getFallbackFamilyNameForChar() so that fallback | |
| 336 // families can be identified by a unique name. The unique | |
| 337 // identifier that we've chosen is the familyID in hex (e.g. '0F##fallback') . | |
| 338 familyRec.fFallbackName.printf("%.2x##fallback", familyRecID); | |
| 339 insert_into_name_dict(fFamilyNameDict, familyRec.fFallbackName.c_str(), fami lyRecID); | |
| 340 | |
| 341 // add to the default fallback list | |
| 342 fDefaultFallbackList.push(familyRecID); | |
| 343 | |
| 344 // stop here if it is the default language tag | |
| 345 const SkString& languageTag = familyRec.fPaintOptions.getLanguage().getTag() ; | |
| 346 if (languageTag.isEmpty()) { | |
| 347 return; | |
| 348 } | |
| 349 | |
| 350 // add to the appropriate language's custom fallback list | |
| 351 FallbackFontList* customList = NULL; | |
| 352 if (!fFallbackFontDict.find(languageTag.c_str(), &customList)) { | |
| 353 DEBUG_FONT(("---- Created fallback list for \"%s\"", languageTag.c_str( ))); | |
| 354 customList = SkNEW(FallbackFontList); | |
| 355 fFallbackFontDict.set(languageTag.c_str(), customList); | |
| 356 } | |
| 357 SkASSERT(customList != NULL); | |
| 358 customList->push(familyRecID); | |
| 359 } | |
| 360 | |
| 361 | |
| 362 static FontRecID find_best_style(const FamilyRec& family, SkTypeface::Style styl e) { | |
| 363 | |
| 364 const FontRecID* fontRecIDs = family.fFontRecID; | |
| 365 | |
| 366 if (fontRecIDs[style] != INVALID_FONT_REC_ID) { // exact match | |
| 367 return fontRecIDs[style]; | |
| 368 } | |
| 369 // look for a matching bold | |
| 370 style = (SkTypeface::Style)(style ^ SkTypeface::kItalic); | |
| 371 if (fontRecIDs[style] != INVALID_FONT_REC_ID) { | |
| 372 return fontRecIDs[style]; | |
| 373 } | |
| 374 // look for the plain | |
| 375 if (fontRecIDs[SkTypeface::kNormal] != INVALID_FONT_REC_ID) { | |
| 376 return fontRecIDs[SkTypeface::kNormal]; | |
| 377 } | |
| 378 // look for anything | |
| 379 for (int i = 0; i < FamilyRec::FONT_STYLE_COUNT; i++) { | |
| 380 if (fontRecIDs[i] != INVALID_FONT_REC_ID) { | |
| 381 return fontRecIDs[i]; | |
| 382 } | |
| 383 } | |
| 384 // should never get here, since the fontRecID list should not be empty | |
| 385 SkDEBUGFAIL("No valid fonts exist for this family"); | |
| 386 return -1; | |
| 387 } | |
| 388 | |
| 389 bool SkFontConfigInterfaceAndroid::matchFamilyName(const char familyName[], | |
| 390 SkTypeface::Style style, | |
| 391 FontIdentity* outFontIdentifi er, | |
| 392 SkString* outFamilyName, | |
| 393 SkTypeface::Style* outStyle) { | |
| 394 // clip to legal style bits | |
| 395 style = (SkTypeface::Style)(style & SkTypeface::kBoldItalic); | |
| 396 | |
| 397 bool exactNameMatch = false; | |
| 398 | |
| 399 FamilyRecID familyRecID = INVALID_FAMILY_REC_ID; | |
| 400 if (NULL != familyName) { | |
| 401 SkAutoAsciiToLC tolc(familyName); | |
| 402 if (fFamilyNameDict.find(tolc.lc(), &familyRecID)) { | |
| 403 exactNameMatch = true; | |
| 404 } | |
| 405 } else { | |
| 406 familyRecID = fDefaultFamilyRecID; | |
| 407 | |
| 408 } | |
| 409 | |
| 410 // If no matching family name is found then return false. This allows client s | |
| 411 // to be able to search for other fonts instead of forcing them to use the | |
| 412 // default font. | |
| 413 if (INVALID_FAMILY_REC_ID == familyRecID) { | |
| 414 return false; | |
| 415 } | |
| 416 | |
| 417 FontRecID fontRecID = find_best_style(fFontFamilies[familyRecID], style); | |
| 418 FontRec& fontRec = fFonts[fontRecID]; | |
| 419 | |
| 420 if (NULL != outFontIdentifier) { | |
| 421 outFontIdentifier->fID = fontRecID; | |
| 422 outFontIdentifier->fTTCIndex = 0; | |
| 423 outFontIdentifier->fString.set(fontRec.fFileName); | |
| 424 // outFontIdentifier->fStyle = fontRec.fStyle; | |
| 425 } | |
| 426 | |
| 427 if (NULL != outFamilyName) { | |
| 428 if (exactNameMatch) { | |
| 429 outFamilyName->set(familyName); | |
| 430 } else { | |
| 431 // find familyName from list of names | |
| 432 const char* familyName = NULL; | |
| 433 SkAssertResult(fFamilyNameDict.findKey(familyRecID, &familyName)); | |
| 434 SkASSERT(familyName); | |
| 435 outFamilyName->set(familyName); | |
| 436 } | |
| 437 } | |
| 438 | |
| 439 if (NULL != outStyle) { | |
| 440 *outStyle = fontRec.fStyle; | |
| 441 } | |
| 442 | |
| 443 return true; | |
| 444 } | |
| 445 | |
| 446 SkStream* SkFontConfigInterfaceAndroid::openStream(const FontIdentity& identity) { | |
| 447 return SkStream::NewFromFile(identity.fString.c_str()); | |
| 448 } | |
| 449 | |
| 450 SkDataTable* SkFontConfigInterfaceAndroid::getFamilyNames() { | |
| 451 SkTDArray<const char*> names; | |
| 452 SkTDArray<size_t> sizes; | |
| 453 | |
| 454 SkTDict<FamilyRecID>::Iter iter(fFamilyNameDict); | |
| 455 const char* familyName = iter.next(NULL); | |
| 456 while(familyName != NULL) { | |
| 457 *names.append() = familyName; | |
| 458 *sizes.append() = strlen(familyName) + 1; | |
| 459 | |
| 460 // move to the next familyName in the dictionary | |
| 461 familyName = iter.next(NULL); | |
| 462 } | |
| 463 | |
| 464 return SkDataTable::NewCopyArrays((const void*const*)names.begin(), | |
| 465 sizes.begin(), names.count()); | |
| 466 } | |
| 467 | |
| 468 bool SkFontConfigInterfaceAndroid::matchFamilySet(const char inFamilyName[], | |
| 469 SkString* outFamilyName, | |
| 470 SkTArray<FontIdentity>*) { | |
| 471 return false; | |
| 472 } | |
| 473 | |
| 474 static bool find_proc(SkTypeface* face, SkTypeface::Style style, void* ctx) { | |
| 475 const FontRecID* fontRecID = (const FontRecID*)ctx; | |
| 476 FontRecID currFontRecID = ((FontConfigTypeface*)face)->getIdentity().fID; | |
| 477 return currFontRecID == *fontRecID; | |
| 478 } | |
| 479 | |
| 480 SkTypeface* SkFontConfigInterfaceAndroid::getTypefaceForFontRec(FontRecID fontRe cID) { | |
| 481 FontRec& fontRec = fFonts[fontRecID]; | |
| 482 SkTypeface* face = fontRec.fTypeface.get(); | |
| 483 if (!face) { | |
| 484 // look for it in the typeface cache | |
| 485 face = SkTypefaceCache::FindByProcAndRef(find_proc, &fontRecID); | |
| 486 | |
| 487 // if it is not in the cache then create it | |
| 488 if (!face) { | |
| 489 const char* familyName = NULL; | |
| 490 SkAssertResult(fFamilyNameDict.findKey(fontRec.fFamilyRecID, &family Name)); | |
| 491 SkASSERT(familyName); | |
| 492 face = SkTypeface::CreateFromName(familyName, fontRec.fStyle); | |
| 493 } | |
| 494 | |
| 495 // store the result for subsequent lookups | |
| 496 fontRec.fTypeface.reset(face); | |
| 497 } | |
| 498 SkASSERT(face); | |
| 499 return face; | |
| 500 } | |
| 501 | |
| 502 bool SkFontConfigInterfaceAndroid::getFallbackFamilyNameForChar(SkUnichar uni, | |
| 503 const char* lang , | |
| 504 SkString* name) { | |
| 505 FallbackFontList* fallbackFontList = NULL; | |
| 506 const SkString langTag(lang); | |
| 507 if (langTag.isEmpty()) { | |
| 508 fallbackFontList = this->getCurrentLocaleFallbackFontList(); | |
| 509 } else { | |
| 510 fallbackFontList = this->findFallbackFontList(langTag); | |
| 511 } | |
| 512 | |
| 513 for (int i = 0; i < fallbackFontList->count(); i++) { | |
| 514 FamilyRecID familyRecID = fallbackFontList->getAt(i); | |
| 515 | |
| 516 // if it is not one of the accepted variants then move to the next famil y | |
| 517 int32_t acceptedVariants = SkPaintOptionsAndroid::kDefault_Variant | | |
| 518 SkPaintOptionsAndroid::kElegant_Variant; | |
| 519 if (!(fFontFamilies[familyRecID].fPaintOptions.getFontVariant() & accept edVariants)) { | |
| 520 continue; | |
| 521 } | |
| 522 | |
| 523 FontRecID fontRecID = find_best_style(fFontFamilies[familyRecID], SkType face::kNormal); | |
| 524 SkTypeface* face = this->getTypefaceForFontRec(fontRecID); | |
| 525 | |
| 526 SkPaint paint; | |
| 527 paint.setTypeface(face); | |
| 528 paint.setTextEncoding(SkPaint::kUTF32_TextEncoding); | |
| 529 | |
| 530 uint16_t glyphID; | |
| 531 paint.textToGlyphs(&uni, sizeof(uni), &glyphID); | |
| 532 if (glyphID != 0) { | |
| 533 name->set(fFontFamilies[familyRecID].fFallbackName); | |
| 534 return true; | |
| 535 } | |
| 536 } | |
| 537 return false; | |
| 538 } | |
| 539 | |
| 540 FallbackFontList* SkFontConfigInterfaceAndroid::getCurrentLocaleFallbackFontList () { | |
| 541 SkString locale = SkFontConfigParser::GetLocale(); | |
| 542 if (NULL == fLocaleFallbackFontList || locale != fCachedLocale) { | |
| 543 fCachedLocale = locale; | |
| 544 fLocaleFallbackFontList = this->findFallbackFontList(locale); | |
| 545 } | |
| 546 return fLocaleFallbackFontList; | |
| 547 } | |
| 548 | |
| 549 FallbackFontList* SkFontConfigInterfaceAndroid::findFallbackFontList(const SkLan guage& lang, | |
| 550 bool isOrig inal) { | |
| 551 const SkString& langTag = lang.getTag(); | |
| 552 if (langTag.isEmpty()) { | |
| 553 return &fDefaultFallbackList; | |
| 554 } | |
| 555 | |
| 556 FallbackFontList* fallbackFontList; | |
| 557 if (fFallbackFontDict.find(langTag.c_str(), langTag.size(), &fallbackFontLis t) || | |
| 558 fFallbackFontAliasDict.find(langTag.c_str(), langTag.size(), &fallbackFo ntList)) { | |
| 559 return fallbackFontList; | |
| 560 } | |
| 561 | |
| 562 // attempt a recursive fuzzy match | |
| 563 SkLanguage parent = lang.getParent(); | |
| 564 fallbackFontList = findFallbackFontList(parent, false); | |
| 565 | |
| 566 // cache the original lang so we don't have to do the recursion again. | |
| 567 if (isOriginal) { | |
| 568 DEBUG_FONT(("---- Created fallback list alias for \"%s\"", langTag.c_st r())); | |
| 569 fFallbackFontAliasDict.set(langTag.c_str(), fallbackFontList); | |
| 570 } | |
| 571 return fallbackFontList; | |
| 572 } | |
| 573 | |
| 574 /////////////////////////////////////////////////////////////////////////////// | |
| 575 | |
| 576 bool SkGetFallbackFamilyNameForChar(SkUnichar uni, const char* lang, SkString* n ame) { | |
|
bungeman-skia
2014/08/06 20:29:43
Clank still needs this until it switches, is it sa
djsollen
2014/08/07 14:03:42
It is not safe yet, as we will need your chromium
| |
| 577 SkFontConfigInterfaceAndroid* fontConfig = getSingletonInterface(); | |
| 578 return fontConfig->getFallbackFamilyNameForChar(uni, lang, name); | |
| 579 } | |
| 580 | |
| 581 void SkUseTestFontConfigFile(const char* mainconf, const char* fallbackconf, | |
| 582 const char* fontsdir) { | |
| 583 gTestMainConfigFile = mainconf; | |
| 584 gTestFallbackConfigFile = fallbackconf; | |
| 585 gTestFontFilePrefix = fontsdir; | |
| 586 SkASSERT(gTestMainConfigFile); | |
| 587 SkASSERT(gTestFallbackConfigFile); | |
| 588 SkASSERT(gTestFontFilePrefix); | |
| 589 SkDEBUGF(("Use Test Config File Main %s, Fallback %s, Font Dir %s", | |
| 590 gTestMainConfigFile, gTestFallbackConfigFile, gTestFontFilePrefix) ); | |
| 591 } | |
| OLD | NEW |