FontCacheAndroid.cpp revision 8e35f3cfc7fba1d1c829dc557ebad6409cbe16a2
18e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project/* 28e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Copyright 2009, The Android Open Source Project 38e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. 48e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 58e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * Redistribution and use in source and binary forms, with or without 68e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * modification, are permitted provided that the following conditions 78e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * are met: 88e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 98e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 1. Redistributions of source code must retain the above copyright 108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * notice, this list of conditions and the following disclaimer. 118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * notice, this list of conditions and the following disclaimer in the 138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * documentation and/or other materials provided with the distribution. 148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * its contributors may be used to endorse or promote products derived 168e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * from this software without specific prior written permission. 178e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 188e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 198e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 208e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 218e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 228e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 248e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 288e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project */ 298e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 308e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "config.h" 318e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "FontCache.h" 328e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "FontPlatformData.h" 338e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "Font.h" 348e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "NotImplemented.h" 358e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "SimpleFontData.h" 368e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "SkPaint.h" 378e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "SkTypeface.h" 388e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "SkUtils.h" 398e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 408e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectnamespace WebCore { 418e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 428e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid FontCache::platformInit() 438e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 448e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 458e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 468e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectconst SimpleFontData* FontCache::getFontDataForCharacters(const Font& font, const UChar* characters, int length) 478e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 488e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // since all of our fonts logically map to the fallback, we can always claim 498e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // that each font supports all characters. 508e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return font.primaryFont(); 518e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 528e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 538e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source ProjectFontPlatformData* FontCache::getSimilarFontPlatformData(const Font& font) 548e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 558e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return 0; 568e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 578e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 588e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source ProjectFontPlatformData* FontCache::getLastResortFallbackFont(const FontDescription& font) 598e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 608e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static AtomicString str("sans-serif"); 618e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return getCachedFontPlatformData(font, str); 628e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 638e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 648e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectstatic char* AtomicStringToUTF8String(const AtomicString& utf16) 658e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 668e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project SkASSERT(sizeof(uint16_t) == sizeof(utf16.characters()[0])); 678e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project const uint16_t* uni = (uint16_t*)utf16.characters(); 688e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 698e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project size_t bytes = SkUTF16_ToUTF8(uni, utf16.length(), NULL); 708e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project char* utf8 = (char*)sk_malloc_throw(bytes + 1); 718e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 728e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project (void)SkUTF16_ToUTF8(uni, utf16.length(), utf8); 738e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project utf8[bytes] = 0; 748e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return utf8; 758e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 768e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 778e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source ProjectFontPlatformData* FontCache::createFontPlatformData(const FontDescription& fontDescription, const AtomicString& family) 788e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 798e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project char* storage = 0; 808e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project const char* name = 0; 818e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 828e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (family.length() == 0) { 838e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static const struct { 848e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FontDescription::GenericFamilyType mType; 858e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project const char* mName; 868e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } gNames[] = { 878e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { FontDescription::SerifFamily, "serif" }, 888e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { FontDescription::SansSerifFamily, "sans-serif" }, 898e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { FontDescription::MonospaceFamily, "monospace" }, 908e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { FontDescription::CursiveFamily, "cursive" }, 918e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { FontDescription::FantasyFamily, "fantasy" } 928e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project }; 938e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 948e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FontDescription::GenericFamilyType type = fontDescription.genericFamily(); 958e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project for (unsigned i = 0; i < SK_ARRAY_COUNT(gNames); i++) 968e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { 978e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (type == gNames[i].mType) 988e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { 998e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project name = gNames[i].mName; 1008e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project break; 1018e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 1028e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 1038e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // if we fall out of the loop, its ok for name to still be 0 1048e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 1058e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project else { // convert the name to utf8 1068e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project storage = AtomicStringToUTF8String(family); 1078e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project name = storage; 1088e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 1098e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project int style = SkTypeface::kNormal; 1118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (fontDescription.weight() >= FontWeightBold) 1128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project style |= SkTypeface::kBold; 1138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (fontDescription.italic()) 1148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project style |= SkTypeface::kItalic; 1158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1168e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project SkTypeface* tf = SkTypeface::Create(name, (SkTypeface::Style)style); 1178e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1188e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FontPlatformData* result = new FontPlatformData(tf, 1198e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project fontDescription.computedSize(), 1208e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project (style & SkTypeface::kBold) && !tf->isBold(), 1218e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project (style & SkTypeface::kItalic) && !tf->isItalic()); 1228e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project tf->unref(); 1238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project sk_free(storage); 1248e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return result; 1258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 1268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // new as of SVN change 36269, Sept 8, 2008 1288e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid FontCache::getTraitsInFamily(const AtomicString& familyName, Vector<unsigned>& traitsMasks) 1298e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 1308e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // Don't understand this yet, but it seems safe to leave unimplemented 1318e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 1328e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1338e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 1348e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 135