author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 24 Sep 2009 12:53:48 +0300 | |
changeset 11 | c8a366e56285 |
parent 0 | dd21522fd290 |
permissions | -rw-r--r-- |
0
dd21522fd290
Revision: 200911
Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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1 |
/* |
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* Copyright (C) 2006, 2007 Apple Inc. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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7 |
* |
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8 |
* 1. Redistributions of source code must retain the above copyright |
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9 |
* notice, this list of conditions and the following disclaimer. |
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10 |
* 2. Redistributions in binary form must reproduce the above copyright |
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11 |
* notice, this list of conditions and the following disclaimer in the |
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12 |
* documentation and/or other materials provided with the distribution. |
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13 |
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
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14 |
* its contributors may be used to endorse or promote products derived |
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15 |
* from this software without specific prior written permission. |
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16 |
* |
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY |
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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19 |
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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|
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#import "config.h" |
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#import "FontCache.h" |
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|
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#import "Font.h" |
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#import "FontData.h" |
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#import "FontPlatformData.h" |
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#import "WebCoreSystemInterface.h" |
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#import "WebFontCache.h" |
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|
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namespace WebCore { |
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|
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static bool getAppDefaultValue(CFStringRef key, int *v) |
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{ |
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CFPropertyListRef value; |
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43 |
|
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value = CFPreferencesCopyValue(key, kCFPreferencesCurrentApplication, |
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kCFPreferencesAnyUser, |
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kCFPreferencesAnyHost); |
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if (value == 0) { |
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value = CFPreferencesCopyValue(key, kCFPreferencesCurrentApplication, |
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kCFPreferencesCurrentUser, |
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kCFPreferencesAnyHost); |
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if (value == 0) |
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return false; |
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} |
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54 |
|
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if (CFGetTypeID(value) == CFNumberGetTypeID()) { |
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if (v != 0) |
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CFNumberGetValue((const CFNumberRef)value, kCFNumberIntType, v); |
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} else if (CFGetTypeID(value) == CFStringGetTypeID()) { |
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if (v != 0) |
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*v = CFStringGetIntValue((const CFStringRef)value); |
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} else { |
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CFRelease(value); |
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return false; |
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64 |
} |
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65 |
|
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CFRelease(value); |
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return true; |
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68 |
} |
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69 |
|
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static bool getUserDefaultValue(CFStringRef key, int *v) |
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71 |
{ |
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CFPropertyListRef value; |
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73 |
|
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value = CFPreferencesCopyValue(key, kCFPreferencesAnyApplication, |
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kCFPreferencesCurrentUser, |
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kCFPreferencesCurrentHost); |
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77 |
if (value == 0) |
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78 |
return false; |
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79 |
|
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80 |
if (CFGetTypeID(value) == CFNumberGetTypeID()) { |
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81 |
if (v != 0) |
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CFNumberGetValue((const CFNumberRef)value, kCFNumberIntType, v); |
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} else if (CFGetTypeID(value) == CFStringGetTypeID()) { |
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84 |
if (v != 0) |
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85 |
*v = CFStringGetIntValue((const CFStringRef)value); |
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86 |
} else { |
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87 |
CFRelease(value); |
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88 |
return false; |
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89 |
} |
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90 |
|
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91 |
CFRelease(value); |
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92 |
return true; |
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93 |
} |
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94 |
|
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95 |
static int getLCDScaleParameters(void) |
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96 |
{ |
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97 |
int mode; |
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98 |
CFStringRef key; |
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99 |
|
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100 |
key = CFSTR("AppleFontSmoothing"); |
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101 |
if (!getAppDefaultValue(key, &mode)) { |
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102 |
if (!getUserDefaultValue(key, &mode)) |
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103 |
return 1; |
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104 |
} |
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105 |
|
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106 |
if (wkFontSmoothingModeIsLCD(mode)) |
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107 |
return 4; |
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108 |
return 1; |
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} |
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110 |
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#define MINIMUM_GLYPH_CACHE_SIZE 1536 * 1024 |
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112 |
|
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void FontCache::platformInit() |
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114 |
{ |
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size_t s = MINIMUM_GLYPH_CACHE_SIZE*getLCDScaleParameters(); |
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116 |
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wkSetUpFontCache(s); |
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} |
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119 |
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const FontData* FontCache::getFontDataForCharacters(const Font& font, const UChar* characters, int length) |
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{ |
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const FontPlatformData& platformData = font.primaryFont()->platformData(); |
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NSFont *nsFont = platformData.font(); |
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124 |
|
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NSString *string = [[NSString alloc] initWithCharactersNoCopy:const_cast<UChar*>(characters) |
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length:length freeWhenDone:NO]; |
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NSFont *substituteFont = wkGetFontInLanguageForRange(nsFont, string, NSMakeRange(0, length)); |
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[string release]; |
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129 |
|
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if (!substituteFont && length == 1) |
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substituteFont = wkGetFontInLanguageForCharacter(nsFont, characters[0]); |
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if (!substituteFont) |
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return 0; |
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134 |
|
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// Use the family name from the AppKit-supplied substitute font, requesting the |
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// traits, weight, and size we want. One way this does better than the original |
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// AppKit request is that it takes synthetic bold and oblique into account. |
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// But it does create the possibility that we could end up with a font that |
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// doesn't actually cover the characters we need. |
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140 |
|
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NSFontManager *manager = [NSFontManager sharedFontManager]; |
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142 |
|
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NSFontTraitMask traits = [manager traitsOfFont:nsFont]; |
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if (platformData.syntheticBold) |
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traits |= NSBoldFontMask; |
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if (platformData.syntheticOblique) |
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traits |= NSItalicFontMask; |
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148 |
|
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NSFont *bestVariation = [manager fontWithFamily:[substituteFont familyName] |
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traits:traits |
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weight:[manager weightOfFont:nsFont] |
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size:[nsFont pointSize]]; |
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if (bestVariation) |
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substituteFont = bestVariation; |
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155 |
|
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substituteFont = font.fontDescription().usePrinterFont() |
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? [substituteFont printerFont] : [substituteFont screenFont]; |
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158 |
|
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NSFontTraitMask substituteFontTraits = [manager traitsOfFont:substituteFont]; |
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160 |
|
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FontPlatformData alternateFont(substituteFont, |
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!font.isPlatformFont() && (traits & NSBoldFontMask) && !(substituteFontTraits & NSBoldFontMask), |
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!font.isPlatformFont() && (traits & NSItalicFontMask) && !(substituteFontTraits & NSItalicFontMask)); |
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return getCachedFontData(&alternateFont); |
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} |
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166 |
|
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FontPlatformData* FontCache::getSimilarFontPlatformData(const Font& font) |
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{ |
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// Attempt to find an appropriate font using a match based on |
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// the presence of keywords in the the requested names. For example, we'll |
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// match any name that contains "Arabic" to Geeza Pro. |
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FontPlatformData* platformData = 0; |
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const FontFamily* currFamily = &font.fontDescription().family(); |
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while (currFamily && !platformData) { |
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if (currFamily->family().length()) { |
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static String matchWords[3] = { String("Arabic"), String("Pashto"), String("Urdu") }; |
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static AtomicString geezaStr("Geeza Pro"); |
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for (int j = 0; j < 3 && !platformData; ++j) |
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if (currFamily->family().contains(matchWords[j], false)) |
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platformData = getCachedFontPlatformData(font.fontDescription(), geezaStr); |
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181 |
} |
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currFamily = currFamily->next(); |
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183 |
} |
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184 |
|
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return platformData; |
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} |
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187 |
|
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FontPlatformData* FontCache::getLastResortFallbackFont(const Font& font) |
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189 |
{ |
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static AtomicString timesStr("Times"); |
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static AtomicString lucidaGrandeStr("Lucida Grande"); |
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192 |
|
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// FIXME: Would be even better to somehow get the user's default font here. For now we'll pick |
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// the default that the user would get without changing any prefs. |
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FontPlatformData* platformFont = getCachedFontPlatformData(font.fontDescription(), timesStr); |
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196 |
if (!platformFont) |
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197 |
// The Times fallback will almost always work, but in the highly unusual case where |
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// the user doesn't have it, we fall back on Lucida Grande because that's |
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199 |
// guaranteed to be there, according to Nathan Taylor. This is good enough |
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200 |
// to avoid a crash at least. |
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201 |
platformFont = getCachedFontPlatformData(font.fontDescription(), lucidaGrandeStr); |
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202 |
|
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return platformFont; |
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204 |
} |
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205 |
|
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206 |
FontPlatformData* FontCache::createFontPlatformData(const FontDescription& fontDescription, const AtomicString& family) |
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207 |
{ |
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NSFontTraitMask traits = 0; |
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209 |
if (fontDescription.italic()) |
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traits |= NSItalicFontMask; |
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211 |
if (fontDescription.bold()) |
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traits |= NSBoldFontMask; |
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213 |
float size = fontDescription.computedPixelSize(); |
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214 |
|
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NSFont* nsFont = [WebFontCache fontWithFamily:family traits:traits size:size]; |
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if (!nsFont) |
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return 0; |
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|
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NSFontTraitMask actualTraits = 0; |
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if (fontDescription.bold() || fontDescription.italic()) |
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actualTraits = [[NSFontManager sharedFontManager] traitsOfFont:nsFont]; |
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|
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FontPlatformData* result = new FontPlatformData; |
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|
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// Use the correct font for print vs. screen. |
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result->setFont(fontDescription.usePrinterFont() ? [nsFont printerFont] : [nsFont screenFont]); |
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result->syntheticBold = (traits & NSBoldFontMask) && !(actualTraits & NSBoldFontMask); |
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result->syntheticOblique = (traits & NSItalicFontMask) && !(actualTraits & NSItalicFontMask); |
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return result; |
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} |
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|
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} // namespace WebCore |