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
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/* |
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* This file is part of the internal font implementation. It should not be included by anyone other than |
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* FontMac.cpp, FontWin.cpp and Font.cpp. |
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* |
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* Copyright (C) 2006, 2007 Apple Inc. |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Library General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public License |
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* along with this library; see the file COPYING.LIB. If not, write to |
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
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* Boston, MA 02110-1301, USA. |
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* |
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*/ |
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|
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#include "config.h" |
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#include "FontPlatformData.h" |
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|
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#include "PlatformString.h" |
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#include "StringHash.h" |
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#include <ApplicationServices/ApplicationServices.h> |
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#include <wtf/HashMap.h> |
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#include <wtf/RetainPtr.h> |
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#include <wtf/Vector.h> |
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|
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using std::min; |
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namespace WebCore { |
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static const int Bold = (1 << 0); |
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static const int Italic = (1 << 1); |
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static const int BoldOblique = (1 << 2); |
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static inline USHORT readBigEndianWord(const BYTE* word) { return (word[0] << 8) | word[1]; } |
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static CFStringRef getPostScriptName(CFStringRef faceName, HDC dc) |
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{ |
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const DWORD cMaxNameTableSize = 1024 * 1024; |
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static HashMap<String, RetainPtr<CFStringRef> > nameMap; |
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|
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// Check our hash first. |
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String faceString(faceName); |
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RetainPtr<CFStringRef> result = nameMap.get(faceString); |
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if (result) |
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return result.get(); |
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|
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// We need to obtain the PostScript name from the name table and use it instead,. |
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DWORD bufferSize = GetFontData(dc, 'eman', 0, NULL, 0); // "name" backwards |
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if (bufferSize == 0 || bufferSize == GDI_ERROR || bufferSize > cMaxNameTableSize) |
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return NULL; |
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|
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Vector<BYTE> bufferVector(bufferSize); |
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BYTE* buffer = bufferVector.data(); |
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if (GetFontData(dc, 'eman', 0, buffer, bufferSize) == GDI_ERROR) |
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return NULL; |
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if (bufferSize < 6) |
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return NULL; |
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|
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USHORT numberOfRecords = readBigEndianWord(buffer + 2); |
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UINT stringsOffset = readBigEndianWord(buffer + 4); |
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if (bufferSize < stringsOffset) |
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return NULL; |
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|
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BYTE* strings = buffer + stringsOffset; |
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|
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// Now walk each name record looking for a Mac or Windows PostScript name. |
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UINT offset = 6; |
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for (int i = 0; i < numberOfRecords; i++) { |
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if (bufferSize < offset + 12) |
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return NULL; |
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|
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USHORT platformID = readBigEndianWord(buffer + offset); |
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USHORT encodingID = readBigEndianWord(buffer + offset + 2); |
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USHORT languageID = readBigEndianWord(buffer + offset + 4); |
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USHORT nameID = readBigEndianWord(buffer + offset + 6); |
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USHORT length = readBigEndianWord(buffer + offset + 8); |
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USHORT nameOffset = readBigEndianWord(buffer + offset + 10); |
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88 |
|
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if (platformID == 3 && encodingID == 1 && languageID == 0x409 && nameID == 6) { |
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// This is a Windows PostScript name and is therefore UTF-16. |
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// Pass Big Endian as the encoding. |
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if (bufferSize < stringsOffset + nameOffset + length) |
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return NULL; |
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result.adoptCF(CFStringCreateWithBytes(NULL, strings + nameOffset, length, kCFStringEncodingUTF16BE, false)); |
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95 |
break; |
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96 |
} else if (platformID == 1 && encodingID == 0 && languageID == 0 && nameID == 6) { |
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// This is a Mac PostScript name and is therefore ASCII. |
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// See http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6name.html |
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if (bufferSize < stringsOffset + nameOffset + length) |
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100 |
return NULL; |
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result.adoptCF(CFStringCreateWithBytes(NULL, strings + nameOffset, length, kCFStringEncodingASCII, false)); |
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102 |
break; |
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103 |
} |
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104 |
|
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105 |
offset += 12; |
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106 |
} |
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107 |
|
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108 |
if (result) |
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109 |
nameMap.set(faceString, result); |
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return result.get(); |
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111 |
} |
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112 |
|
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static int CALLBACK enumStylesCallback(const LOGFONT* logFont, const TEXTMETRIC* metrics, DWORD fontType, LPARAM lParam) |
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114 |
{ |
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int *style = reinterpret_cast<int*>(lParam); |
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116 |
|
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// FIXME: In order to accommodate Lucida we go ahead and consider a weight of 600 to be bold. |
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// This does mean we'll consider demibold and semibold fonts on windows to also be bold. This |
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// is rare enough that it seems like an ok hack for now. |
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if (logFont->lfWeight >= 600) { |
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if (logFont->lfItalic) |
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*style |= BoldOblique; |
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123 |
else |
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*style |= Bold; |
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} else if (logFont->lfItalic) |
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*style |= Italic; |
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127 |
|
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return 1; |
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129 |
} |
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130 |
|
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FontPlatformData::FontPlatformData(HFONT font, int size, bool bold, bool oblique) |
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: m_font(font) |
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, m_size(size) |
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, m_cgFont(0) |
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, m_syntheticBold(false) |
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, m_syntheticOblique(false) |
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137 |
{ |
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HDC hdc = GetDC(0); |
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SaveDC(hdc); |
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140 |
|
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141 |
SelectObject(hdc, font); |
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UINT bufferSize = GetOutlineTextMetrics(hdc, 0, NULL); |
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143 |
|
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ASSERT_WITH_MESSAGE(bufferSize != 0, "Bitmap fonts not supported with CoreGraphics."); |
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145 |
|
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146 |
if (bufferSize != 0) { |
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OUTLINETEXTMETRICW* metrics = (OUTLINETEXTMETRICW*)malloc(bufferSize); |
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148 |
|
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GetOutlineTextMetricsW(hdc, bufferSize, metrics); |
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WCHAR* faceName = (WCHAR*)((uintptr_t)metrics + (uintptr_t)metrics->otmpFaceName); |
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151 |
|
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152 |
if (bold || oblique) { |
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153 |
LOGFONT logFont; |
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154 |
|
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int len = min((int)wcslen(faceName), LF_FACESIZE - 1); |
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memcpy(logFont.lfFaceName, faceName, len * sizeof(WORD)); |
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157 |
logFont.lfFaceName[len] = '\0'; |
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158 |
logFont.lfCharSet = metrics->otmTextMetrics.tmCharSet; |
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159 |
logFont.lfPitchAndFamily = 0; |
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160 |
|
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161 |
int styles = 0; |
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162 |
EnumFontFamiliesEx(hdc, &logFont, enumStylesCallback, reinterpret_cast<LPARAM>(&styles), 0); |
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|
163 |
|
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164 |
// Check if we need to synthesize bold or oblique. The rule that complicates things here |
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165 |
// is that if the requested font is bold and oblique, and both a bold font and an oblique font |
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166 |
// exist, the bold font should be used, and oblique synthesized. |
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|
167 |
if (bold && oblique) { |
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|
168 |
if (styles == 0) { |
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169 |
m_syntheticBold = true; |
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170 |
m_syntheticOblique = true; |
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171 |
} else if (styles & Bold) |
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172 |
m_syntheticOblique = true; |
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173 |
else if (styles & Italic) |
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|
174 |
m_syntheticBold = true; |
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175 |
} else if (bold && (!(styles & Bold))) |
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176 |
m_syntheticBold = true; |
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177 |
else if (oblique && !(styles & Italic)) |
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178 |
m_syntheticOblique = true; |
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179 |
} |
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|
180 |
|
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|
181 |
// Try the face name first. Windows may end up localizing this name, and CG doesn't know about |
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182 |
// the localization. If the create fails, we'll try the PostScript name. |
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|
183 |
RetainPtr<CFStringRef> fullName(AdoptCF, CFStringCreateWithCharacters(NULL, (const UniChar*)faceName, wcslen(faceName))); |
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184 |
m_cgFont = CGFontCreateWithFontName(fullName.get()); |
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185 |
if (!m_cgFont) { |
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|
186 |
CFStringRef postScriptName = getPostScriptName(fullName.get(), hdc); |
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187 |
if (postScriptName) { |
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188 |
m_cgFont = CGFontCreateWithFontName(postScriptName); |
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189 |
ASSERT(m_cgFont); |
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190 |
} |
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|
191 |
} |
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192 |
free(metrics); |
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|
193 |
} |
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|
194 |
|
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195 |
RestoreDC(hdc, -1); |
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196 |
ReleaseDC(0, hdc); |
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|
197 |
} |
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|
198 |
|
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199 |
FontPlatformData::~FontPlatformData() |
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200 |
{ |
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|
201 |
} |
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|
202 |
|
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203 |
} |