15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (c) 2011 Google Inc. All rights reserved. 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Redistribution and use in source and binary forms, with or without 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modification, are permitted provided that the following conditions are 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * met: 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * * Redistributions of source code must retain the above copyright 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer. 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * * Redistributions in binary form must reproduce the above 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * copyright notice, this list of conditions and the following disclaimer 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * in the documentation and/or other materials provided with the 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * distribution. 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * * Neither the name of Google Inc. nor the names of its 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * contributors may be used to endorse or promote products derived from 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * this software without specific prior written permission. 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include "config.h" 32a854de003a23bf3c7f95ec0f8154ada64092ff5cTorne (Richard Coles)#include "platform/fonts/FontCache.h" 335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 347242dc3dbeb210b5e876a3c42d1ec1a667fc621aPrimiano Tucci#include "platform/Language.h" 35a854de003a23bf3c7f95ec0f8154ada64092ff5cTorne (Richard Coles)#include "platform/fonts/SimpleFontData.h" 36f79f16f17ddc4f842d7b7a38603e280e94be826aTorne (Richard Coles)#include "platform/fonts/FontDescription.h" 37197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch#include "platform/fonts/FontFaceCreationParams.h" 38e38fbeeb576b5094e34e038ab88d9d6a5c5c2214Torne (Richard Coles)#include "third_party/skia/include/core/SkTypeface.h" 39e38fbeeb576b5094e34e038ab88d9d6a5c5c2214Torne (Richard Coles)#include "third_party/skia/include/ports/SkFontMgr.h" 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 41c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)namespace blink { 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 437242dc3dbeb210b5e876a3c42d1ec1a667fc621aPrimiano Tuccistatic AtomicString getFamilyNameForCharacter(UChar32 c, const FontDescription& fontDescription) 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 45e38fbeeb576b5094e34e038ab88d9d6a5c5c2214Torne (Richard Coles) RefPtr<SkFontMgr> fm = adoptRef(SkFontMgr::RefDefault()); 46fdbb120d0a4a87db74bcb608de226c85a7d1c920Ben Murdoch const char* bcp47Locales[2]; 47fdbb120d0a4a87db74bcb608de226c85a7d1c920Ben Murdoch int localeCount = 0; 48fdbb120d0a4a87db74bcb608de226c85a7d1c920Ben Murdoch CString defaultLocale = defaultLanguage().ascii(); 49fdbb120d0a4a87db74bcb608de226c85a7d1c920Ben Murdoch bcp47Locales[localeCount++] = defaultLocale.data(); 50fdbb120d0a4a87db74bcb608de226c85a7d1c920Ben Murdoch CString fontLocale; 51fdbb120d0a4a87db74bcb608de226c85a7d1c920Ben Murdoch if (!fontDescription.locale().isEmpty()) { 52fdbb120d0a4a87db74bcb608de226c85a7d1c920Ben Murdoch fontLocale = fontDescription.locale().ascii(); 53fdbb120d0a4a87db74bcb608de226c85a7d1c920Ben Murdoch bcp47Locales[localeCount++] = fontLocale.data(); 54fdbb120d0a4a87db74bcb608de226c85a7d1c920Ben Murdoch } 55fdbb120d0a4a87db74bcb608de226c85a7d1c920Ben Murdoch RefPtr<SkTypeface> typeface = adoptRef(fm->matchFamilyStyleCharacter(0, SkFontStyle(), bcp47Locales, localeCount, c)); 56e38fbeeb576b5094e34e038ab88d9d6a5c5c2214Torne (Richard Coles) if (!typeface) 57d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) return emptyAtom; 58d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) 59e38fbeeb576b5094e34e038ab88d9d6a5c5c2214Torne (Richard Coles) SkString skiaFamilyName; 60e38fbeeb576b5094e34e038ab88d9d6a5c5c2214Torne (Richard Coles) typeface->getFamilyName(&skiaFamilyName); 611e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) return skiaFamilyName.c_str(); 621e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles)} 631e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) 645d92fedcae5e801a8b224de090094f2d9df0b54aTorne (Richard Coles)PassRefPtr<SimpleFontData> FontCache::fallbackFontForCharacter(const FontDescription& fontDescription, UChar32 c, const SimpleFontData*) 651e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles){ 667242dc3dbeb210b5e876a3c42d1ec1a667fc621aPrimiano Tucci AtomicString familyName = getFamilyNameForCharacter(c, fontDescription); 671e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) if (familyName.isEmpty()) 68d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) return getLastResortFallbackFont(fontDescription, DoNotRetain); 69197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch return fontDataFromFontPlatformData(getFontPlatformData(fontDescription, FontFaceCreationParams(familyName)), DoNotRetain); 701e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles)} 711e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) 721e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles)// static 737242dc3dbeb210b5e876a3c42d1ec1a667fc621aPrimiano TucciAtomicString FontCache::getGenericFamilyNameForScript(const AtomicString& familyName, const FontDescription& fontDescription) 741e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles){ 751e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) // This is a hack to use the preferred font for CJK scripts. 761e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) // FIXME: Use new Skia API once Android system supports per-family and per-script fallback fonts. 771e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) UChar32 examplerChar; 787242dc3dbeb210b5e876a3c42d1ec1a667fc621aPrimiano Tucci switch (fontDescription.script()) { 791e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) case USCRIPT_SIMPLIFIED_HAN: 801e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) case USCRIPT_TRADITIONAL_HAN: 811e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) case USCRIPT_KATAKANA_OR_HIRAGANA: 821e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) examplerChar = 0x4E00; // A common character in Japanese and Chinese. 831e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) break; 841e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) case USCRIPT_HANGUL: 851e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) examplerChar = 0xAC00; 861e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) break; 871e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) default: 881e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) // For other scripts, use the default generic family mapping logic. 891e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) return familyName; 901e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) } 911e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) 927242dc3dbeb210b5e876a3c42d1ec1a667fc621aPrimiano Tucci return getFamilyNameForCharacter(examplerChar, fontDescription); 935c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 945c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 95c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)} // namespace blink 96