FontCacheAndroid.cpp revision e03118fd5d9b776df29de3f96232ed6b5395c845
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: 8e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * * Redistributions of source code must retain the above copyright 9e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * notice, this list of conditions and the following disclaimer. 10e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * * Redistributions in binary form must reproduce the above copyright 11e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * notice, this list of conditions and the following disclaimer in the 12e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * documentation and/or other materials provided with the distribution. 138e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project * 14e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY 15e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 18e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24e03118fd5d9b776df29de3f96232ed6b5395c845Steve Block * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project */ 268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "config.h" 288e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "FontCache.h" 298e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "FontPlatformData.h" 308e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "Font.h" 318e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "NotImplemented.h" 328e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "SimpleFontData.h" 338e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "SkPaint.h" 348e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "SkTypeface.h" 358e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project#include "SkUtils.h" 368e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 378e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectnamespace WebCore { 388e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 398e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid FontCache::platformInit() 408e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 418e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 428e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 438e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectconst SimpleFontData* FontCache::getFontDataForCharacters(const Font& font, const UChar* characters, int length) 448e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 458e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // since all of our fonts logically map to the fallback, we can always claim 468e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // that each font supports all characters. 478e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return font.primaryFont(); 488e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 498e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 508e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source ProjectFontPlatformData* FontCache::getSimilarFontPlatformData(const Font& font) 518e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 528e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return 0; 538e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 548e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 558e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source ProjectFontPlatformData* FontCache::getLastResortFallbackFont(const FontDescription& font) 568e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 578e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static AtomicString str("sans-serif"); 588e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return getCachedFontPlatformData(font, str); 598e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 608e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 618e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectstatic char* AtomicStringToUTF8String(const AtomicString& utf16) 628e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 638e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project SkASSERT(sizeof(uint16_t) == sizeof(utf16.characters()[0])); 648e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project const uint16_t* uni = (uint16_t*)utf16.characters(); 658e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 668e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project size_t bytes = SkUTF16_ToUTF8(uni, utf16.length(), NULL); 678e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project char* utf8 = (char*)sk_malloc_throw(bytes + 1); 688e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 698e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project (void)SkUTF16_ToUTF8(uni, utf16.length(), utf8); 708e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project utf8[bytes] = 0; 718e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return utf8; 728e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 738e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 748e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source ProjectFontPlatformData* FontCache::createFontPlatformData(const FontDescription& fontDescription, const AtomicString& family) 758e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 768e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project char* storage = 0; 778e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project const char* name = 0; 788e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 798e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (family.length() == 0) { 808e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project static const struct { 818e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FontDescription::GenericFamilyType mType; 828e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project const char* mName; 838e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } gNames[] = { 848e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { FontDescription::SerifFamily, "serif" }, 858e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { FontDescription::SansSerifFamily, "sans-serif" }, 868e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { FontDescription::MonospaceFamily, "monospace" }, 878e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { FontDescription::CursiveFamily, "cursive" }, 888e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { FontDescription::FantasyFamily, "fantasy" } 898e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project }; 908e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 918e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FontDescription::GenericFamilyType type = fontDescription.genericFamily(); 928e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project for (unsigned i = 0; i < SK_ARRAY_COUNT(gNames); i++) 938e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { 948e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (type == gNames[i].mType) 958e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project { 968e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project name = gNames[i].mName; 978e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project break; 988e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 998e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 1008e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // if we fall out of the loop, its ok for name to still be 0 1018e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 1028e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project else { // convert the name to utf8 1038e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project storage = AtomicStringToUTF8String(family); 1048e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project name = storage; 1058e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project } 1068e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1078e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project int style = SkTypeface::kNormal; 1088e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (fontDescription.weight() >= FontWeightBold) 1098e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project style |= SkTypeface::kBold; 1108e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project if (fontDescription.italic()) 1118e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project style |= SkTypeface::kItalic; 1128e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 113635860845790a19bf50bbc51ba8fb66a96dde068The Android Open Source Project SkTypeface* tf = SkTypeface::CreateFromName(name, (SkTypeface::Style)style); 1148e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1158e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project FontPlatformData* result = new FontPlatformData(tf, 1168e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project fontDescription.computedSize(), 1178e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project (style & SkTypeface::kBold) && !tf->isBold(), 1188e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project (style & SkTypeface::kItalic) && !tf->isItalic()); 1198e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project tf->unref(); 1208e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project sk_free(storage); 1218e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project return result; 1228e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 1238e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1248e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // new as of SVN change 36269, Sept 8, 2008 1258e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Projectvoid FontCache::getTraitsInFamily(const AtomicString& familyName, Vector<unsigned>& traitsMasks) 1268e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project{ 1278e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project // Don't understand this yet, but it seems safe to leave unimplemented 1288e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 1298e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project 1308e35f3cfc7fba1d1c829dc557ebad6409cbe16a2The Android Open Source Project} 131