1 /* 2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include "config.h" 30 #include "FontCache.h" 31 #include "Font.h" 32 #include "FontPlatformData.h" 33 #include "NotImplemented.h" 34 #include "SimpleFontData.h" 35 36 namespace WebCore { 37 38 void FontCache::platformInit() 39 { 40 } 41 42 const SimpleFontData* FontCache::getFontDataForCharacters(const Font& font, const UChar* characters, int length) 43 { 44 SimpleFontData* fontData = 0; 45 fontData = getCachedFontData(font.fontDescription(), font.family().family()); 46 if (!fontData->containsCharacters(characters, length)) 47 fontData = getSimilarFontPlatformData(font); 48 if (!fontData->containsCharacters(characters, length)) 49 fontData = getLastResortFallbackFont(font.fontDescription()); 50 51 ASSERT(fontData); 52 return fontData; 53 } 54 55 SimpleFontData* FontCache::getSimilarFontPlatformData(const Font& font) 56 { 57 SimpleFontData* simpleFontData = 0; 58 #if OS(DARWIN) 59 // Attempt to find an appropriate font using a match based on 60 // the presence of keywords in the the requested names. For example, we'll 61 // match any name that contains "Arabic" to Geeza Pro. 62 const FontFamily* currFamily = &font.fontDescription().family(); 63 while (currFamily && !simpleFontData) { 64 if (currFamily->family().length()) { 65 static String* matchWords[3] = { new String("Arabic"), new String("Pashto"), new String("Urdu") }; 66 DEFINE_STATIC_LOCAL(AtomicString, geezaStr, ("Geeza Pro")); 67 for (int j = 0; j < 3 && !simpleFontData; ++j) 68 if (currFamily->family().contains(*matchWords[j], false)) 69 simpleFontData = getCachedFontData(font.fontDescription(), geezaStr); 70 } 71 currFamily = currFamily->next(); 72 } 73 #endif 74 if (!simpleFontData) 75 simpleFontData = getCachedFontData(font.fontDescription(), font.family().family()); 76 77 return simpleFontData; 78 } 79 80 SimpleFontData* FontCache::getLastResortFallbackFont(const FontDescription& fontDescription) 81 { 82 // FIXME: Would be even better to somehow get the user's default font here. For now we'll pick 83 // the default that the user would get without changing any prefs. 84 SimpleFontData* fallback = 0; 85 #if OS(WINDOWS) 86 static AtomicString fallbackName("Arial Unicode MS"); 87 #else 88 static AtomicString fallbackName("Times New Roman"); 89 #endif 90 fallback = getCachedFontData(fontDescription, fallbackName); 91 ASSERT(fallback); 92 93 return fallback; 94 } 95 96 FontPlatformData* FontCache::createFontPlatformData(const FontDescription& fontDescription, const AtomicString& family) 97 { 98 return new FontPlatformData(fontDescription,family); 99 } 100 101 void FontCache::getTraitsInFamily(const AtomicString& familyName, Vector<unsigned>& traitsMasks) 102 { 103 notImplemented(); 104 } 105 106 } 107