/* * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved. * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com> * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of * its contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #import "config.h" #import "FontCache.h" #import "Font.h" #import "SimpleFontData.h" #import "FontPlatformData.h" #import "WebCoreSystemInterface.h" #import "WebFontCache.h" #include <wtf/StdLibExtras.h> #import "CharacterNames.h" #ifdef BUILDING_ON_TIGER typedef int NSInteger; #endif namespace WebCore { void FontCache::platformInit() { wkSetUpFontCache(); } static inline bool isGSFontWeightBold(NSInteger fontWeight) { return fontWeight >= FontWeight600; } const SimpleFontData* FontCache::getFontDataForCharacters(const Font& font, const UChar* characters, int length) { //printf("iPhone looks for font for unicode char %u\n", *characters); // Unlike OS X, our fallback font on iPhone is Arial Unicode, which doesn't have some apple-specific glyphs like F8FF. // Fall back to the Apple Fallback font in this case. if (length > 0 && requiresCustomFallbackFont(*characters)) return getCachedFontData(getCustomFallbackFont(*characters, font)); UChar32 c = *characters; if (length > 1 && U16_IS_LEAD(c) && U16_IS_TRAIL(characters[1])) c = U16_GET_SUPPLEMENTARY(c, characters[1]); bool useCJFont = false; bool useKoreanFont = false; bool useCyrillicFont = false; bool useArabicFont = false; bool useHebrewFont = false; bool useThaiFont = false; bool useImageFont = false; if (length > 0) { do { // This isn't a loop but a way to efficiently check for ranges of characters. // The following ranges are Korean Hangul and should be rendered by Apple Gothic // U+1100 - U+11FF // U+3130 - U+318F // U+AC00 - U+D7A3 // These are Cyrillic and should be rendered by Helvetica Neue // U+0400 - U+052F if (c < 0x400) break; if (c <= 0x52F) { useCyrillicFont = true; break; } if (c < 0x590) break; if (c < 0x600) { useHebrewFont = true; break; } if (c <= 0x6FF) { useArabicFont = true; break; } if (c < 0xE00) break; if (c <= 0xE7F) { useThaiFont = true; break; } if (c < 0x1100) break; if (c <= 0x11FF) { useKoreanFont = true; break; } if (c < 0x2E80) break; if (c < 0x3130) { useCJFont = true; break; } if (c <= 0x318F) { useKoreanFont = true; break; } if (c < 0xAC00) { useCJFont = true; break; } if (c <= 0xD7A3) { useKoreanFont = true; break; } if ( c <= 0xDFFF) { useCJFont = true; break; } if ( c < 0xE000) break; if ( c < 0xE600) { useImageFont = true; break; } if (c <= 0xF8FF) break; if (c < 0xFFF0) { useCJFont = true; break; } if (c >=0x20000 && c <= 0x2FFFF) useCJFont = true; } while (0); } FontPlatformData* platformFont = NULL; if (useCJFont) { // by default, Chinese font is preferred, fall back on Japanese enum CJKFontVariant { kCJKFontUseHiragino = 0, kCJKFontUseSTHeitiSC, kCJKFontUseSTHeitiTC, kCJKFontUseSTHeitiJ, kCJKFontUseSTHeitiK, kCJKFontsUseHKGPW3UI }; DEFINE_STATIC_LOCAL(AtomicString, plainHiragino, ("HiraKakuProN-W3")); DEFINE_STATIC_LOCAL(AtomicString, plainSTHeitiSC, ("STHeitiSC-Light")); DEFINE_STATIC_LOCAL(AtomicString, plainSTHeitiTC, ("STHeitiTC-Light")); DEFINE_STATIC_LOCAL(AtomicString, plainSTHeitiJ, ("STHeitiJ-Light")); DEFINE_STATIC_LOCAL(AtomicString, plainSTHeitiK, ("STHeitiK-Light")); DEFINE_STATIC_LOCAL(AtomicString, plainHKGPW3UI, ("HKGPW3UI")); static AtomicString* cjkPlain[] = { &plainHiragino, &plainSTHeitiSC, &plainSTHeitiTC, &plainSTHeitiJ, &plainSTHeitiK, &plainHKGPW3UI, }; DEFINE_STATIC_LOCAL(AtomicString, boldHiragino, ("HiraKakuProN-W6")); DEFINE_STATIC_LOCAL(AtomicString, boldSTHeitiSC, ("STHeitiSC-Medium")); DEFINE_STATIC_LOCAL(AtomicString, boldSTHeitiTC, ("STHeitiTC-Medium")); DEFINE_STATIC_LOCAL(AtomicString, boldSTHeitiJ, ("STHeitiJ-Medium")); DEFINE_STATIC_LOCAL(AtomicString, boldSTHeitiK, ("STHeitiK-Medium")); DEFINE_STATIC_LOCAL(AtomicString, boldHKGPW3UI, ("HKGPW3UI")); static AtomicString* cjkBold[] = { &boldHiragino, &boldSTHeitiSC, &boldSTHeitiTC, &boldSTHeitiJ, &boldSTHeitiK, &boldHKGPW3UI, }; //default below is for Simplified Chinese user: zh-Hans - note that Hiragino is the //the secondary font as we want its for Hiragana and Katakana. The other CJK fonts //do not, and should not, contain Hiragana or Katakana glyphs. static CJKFontVariant preferredCJKFont = kCJKFontUseSTHeitiSC; static CJKFontVariant secondaryCJKFont = kCJKFontsUseHKGPW3UI; static bool CJKFontInitialized = false; if (!CJKFontInitialized) { CJKFontInitialized = true; // Testing: languageName = (CFStringRef)@"ja"; NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; NSArray *languages = [defaults stringArrayForKey:@"AppleLanguages"]; if( languages ) { CFStringRef languageName = NULL; for( NSString *language in languages) { languageName = CFLocaleCreateCanonicalLanguageIdentifierFromString(NULL, (CFStringRef)language); if ( CFEqual(languageName, CFSTR("zh-Hans")) ) break; //Simplified Chinese - default settings else if ( CFEqual(languageName, CFSTR("ja")) ) { preferredCJKFont=kCJKFontUseHiragino; //japanese - prefer Hiragino and STHeiti Japanse Variant secondaryCJKFont=kCJKFontUseSTHeitiJ; break; } else if ( CFEqual(languageName, CFSTR("ko")) ) { preferredCJKFont=kCJKFontUseSTHeitiK; //korean - prefer STHeiti Korean Variant break; } else if ( CFEqual(languageName, CFSTR("zh-Hant")) ) { preferredCJKFont=kCJKFontUseSTHeitiTC; //Traditional Chinese - prefer STHeiti Traditional Variant break; } CFRelease(languageName); languageName = NULL; } if( languageName ) CFRelease(languageName); } } platformFont = getCachedFontPlatformData(font.fontDescription(), isGSFontWeightBold(font.fontDescription().weight()) ? *cjkBold[preferredCJKFont] : *cjkPlain[preferredCJKFont]); CGGlyph glyphs[2]; // CGFontGetGlyphsForUnichars takes UTF-16 buffer. Should only be 1 codepoint but since we may pass in two UTF-16 characters, // make room for 2 glyphs just to be safe. GSFontGetGlyphsForUnichars(platformFont->font(), characters, glyphs, length); if ( glyphs[0] == 0 ) platformFont = getCachedFontPlatformData(font.fontDescription(), isGSFontWeightBold(font.fontDescription().weight()) ? *cjkBold[secondaryCJKFont] : *cjkPlain[secondaryCJKFont]); } else if (useKoreanFont) { DEFINE_STATIC_LOCAL(AtomicString, koreanFont, ("AppleGothic")); platformFont = getCachedFontPlatformData(font.fontDescription(), koreanFont); } else if (useCyrillicFont) { DEFINE_STATIC_LOCAL(AtomicString, cyrillicPlain, ("HelveticaNeue")); DEFINE_STATIC_LOCAL(AtomicString, cyrillicBold, ("HelveticaNeue-Bold")); platformFont = getCachedFontPlatformData(font.fontDescription(), isGSFontWeightBold(font.fontDescription().weight()) ? cyrillicBold : cyrillicPlain); } else if (useArabicFont) { DEFINE_STATIC_LOCAL(AtomicString, arabicPlain, ("GeezaPro")); DEFINE_STATIC_LOCAL(AtomicString, arabicBold, ("GeezaPro-Bold")); platformFont = getCachedFontPlatformData(font.fontDescription(), isGSFontWeightBold(font.fontDescription().weight()) ? arabicBold : arabicPlain); } else if (useHebrewFont) { DEFINE_STATIC_LOCAL(AtomicString, hebrewPlain, ("ArialHebrew")); DEFINE_STATIC_LOCAL(AtomicString, hebrewBold, ("ArialHebrew-Bold")); platformFont = getCachedFontPlatformData(font.fontDescription(), isGSFontWeightBold(font.fontDescription().weight()) ? hebrewBold : hebrewPlain); } else if (useThaiFont) { DEFINE_STATIC_LOCAL(AtomicString, thaiPlain, ("Thonburi")); DEFINE_STATIC_LOCAL(AtomicString, thaiBold, ("Thonburi-Bold")); platformFont = getCachedFontPlatformData(font.fontDescription(), isGSFontWeightBold(font.fontDescription().weight()) ? thaiBold : thaiPlain); } else if (useImageFont) { DEFINE_STATIC_LOCAL(AtomicString, image, ("AppleWebKitImage")); platformFont = getCachedFontPlatformData(font.fontDescription(), image); } if ( platformFont != NULL ) return getCachedFontData(platformFont); return getCachedFontData(getLastResortFallbackFont(font.fontDescription())); } FontPlatformData* FontCache::getSimilarFontPlatformData(const Font& font) { // Attempt to find an appropriate font using a match based on // the presence of keywords in the the requested names. For example, we'll // match any name that contains "Arabic" to Geeza Pro. FontPlatformData* platformData = 0; const FontFamily* currFamily = &font.fontDescription().family(); while (currFamily && !platformData) { if (currFamily->family().length()) { static String* matchWords[3] = { new String("Arabic"), new String("Pashto"), new String("Urdu") }; DEFINE_STATIC_LOCAL(AtomicString, geezaPlain, ("GeezaPro")); DEFINE_STATIC_LOCAL(AtomicString, geezaBold, ("GeezaPro-Bold")); for (int j = 0; j < 3 && !platformData; ++j) if (currFamily->family().contains(*matchWords[j], false)) platformData = getCachedFontPlatformData(font.fontDescription(), isGSFontWeightBold(font.fontDescription().weight()) ? geezaBold : geezaPlain); } currFamily = currFamily->next(); } return platformData; } FontPlatformData* FontCache::getLastResortFallbackFont(const FontDescription& fontDescription) { DEFINE_STATIC_LOCAL(AtomicString, arialUnicodeMSStr, ("ArialUnicodeMS")); FontPlatformData* platformFont = getCachedFontPlatformData(fontDescription, arialUnicodeMSStr); return platformFont; } FontPlatformData* FontCache::getCustomFallbackFont(const UInt32 c, const Font& font) { assert(requiresCustomFallbackFont(c)); if (c == AppleLogo) { DEFINE_STATIC_LOCAL(AtomicString, helveticaStr, ("Helvetica")); FontPlatformData* platformFont = getCachedFontPlatformData(font.fontDescription(), helveticaStr); return platformFont; } else if (c == BigDot) { DEFINE_STATIC_LOCAL(AtomicString, lockClockStr, ("LockClock-Light")); FontPlatformData* platformFont = getCachedFontPlatformData(font.fontDescription(), lockClockStr); return platformFont; } return NULL; } inline bool FontCache::requiresCustomFallbackFont(const UInt32 c) { return (c == AppleLogo || c == BigDot); } void FontCache::getTraitsInFamily(const AtomicString& familyName, Vector<unsigned>& traitsMasks) { [WebFontCache getTraits:traitsMasks inFamily:familyName]; } FontPlatformData* FontCache::createFontPlatformData(const FontDescription& fontDescription, const AtomicString& family) { // Special case for "Courier" font. We have only an oblique variant on iPhone, // so disallow its use here. We'll fall back on "Courier New". <rdar://problem/5116477> DEFINE_STATIC_LOCAL(AtomicString, courier, ("Courier")); if (equalIgnoringCase(family, courier)) return 0; DEFINE_STATIC_LOCAL(AtomicString, image, ("AppleWebKitImage")); bool useImageFont = equalIgnoringCase(family, image); GSFontTraitMask traits = 0; if (fontDescription.italic()) traits |= GSItalicFontMask; if (isGSFontWeightBold(fontDescription.weight())) traits |= GSBoldFontMask; float size = fontDescription.computedPixelSize(); GSFontTraitMask actualTraits = 0; GSFontRef gsFont = 0; if (!useImageFont) { gsFont = [WebFontCache createFontWithFamily:family traits:traits weight:fontDescription.weight() size:size]; if (!gsFont) return 0; if (isGSFontWeightBold(fontDescription.weight()) || fontDescription.italic()) actualTraits = GSFontGetTraits(gsFont); } FontPlatformData* result = new FontPlatformData; // Use the correct font for print vs. screen. if (useImageFont) { result->m_isImageFont = true; result->m_size = size; } else result->setFont(gsFont); result->m_syntheticBold = (traits & GSBoldFontMask) && !(actualTraits & GSBoldFontMask); result->m_syntheticOblique = (traits & GSItalicFontMask) && !(actualTraits & GSItalicFontMask); return result; } } // namespace WebCore