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
platformInit()38 void FontCache::platformInit()
39 {
40 }
41
getFontDataForCharacters(const Font & font,const UChar * characters,int length)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
getSimilarFontPlatformData(const Font & font)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
getLastResortFallbackFont(const FontDescription & fontDescription)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
createFontPlatformData(const FontDescription & fontDescription,const AtomicString & family)96 FontPlatformData* FontCache::createFontPlatformData(const FontDescription& fontDescription, const AtomicString& family)
97 {
98 return new FontPlatformData(fontDescription,family);
99 }
100
getTraitsInFamily(const AtomicString & familyName,Vector<unsigned> & traitsMasks)101 void FontCache::getTraitsInFamily(const AtomicString& familyName, Vector<unsigned>& traitsMasks)
102 {
103 notImplemented();
104 }
105
106 }
107