1/* 2 * This file is part of the internal font implementation. It should not be included by anyone other than 3 * FontMac.cpp, FontWin.cpp and Font.cpp. 4 * 5 * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Library General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Library General Public License for more details. 16 * 17 * You should have received a copy of the GNU Library General Public License 18 * along with this library; see the file COPYING.LIB. If not, write to 19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 * 22 */ 23 24#include "config.h" 25#include "FontPlatformData.h" 26 27#include "SharedGDIObject.h" 28#include <ApplicationServices/ApplicationServices.h> 29#include <WebKitSystemInterface/WebKitSystemInterface.h> 30#include <wtf/HashMap.h> 31#include <wtf/RetainPtr.h> 32#include <wtf/Vector.h> 33#include <wtf/text/StringHash.h> 34#include <wtf/text/WTFString.h> 35 36using std::min; 37 38namespace WebCore { 39 40static inline USHORT readBigEndianWord(const BYTE* word) { return (word[0] << 8) | word[1]; } 41 42static CFStringRef getPostScriptName(CFStringRef faceName, HDC dc) 43{ 44 const DWORD cMaxNameTableSize = 1024 * 1024; 45 46 static HashMap<String, RetainPtr<CFStringRef> > nameMap; 47 48 // Check our hash first. 49 String faceString(faceName); 50 RetainPtr<CFStringRef> result = nameMap.get(faceString); 51 if (result) 52 return result.get(); 53 54 // We need to obtain the PostScript name from the name table and use it instead,. 55 DWORD bufferSize = GetFontData(dc, 'eman', 0, NULL, 0); // "name" backwards 56 if (bufferSize == 0 || bufferSize == GDI_ERROR || bufferSize > cMaxNameTableSize) 57 return NULL; 58 59 Vector<BYTE> bufferVector(bufferSize); 60 BYTE* buffer = bufferVector.data(); 61 if (GetFontData(dc, 'eman', 0, buffer, bufferSize) == GDI_ERROR) 62 return NULL; 63 64 if (bufferSize < 6) 65 return NULL; 66 67 USHORT numberOfRecords = readBigEndianWord(buffer + 2); 68 UINT stringsOffset = readBigEndianWord(buffer + 4); 69 if (bufferSize < stringsOffset) 70 return NULL; 71 72 BYTE* strings = buffer + stringsOffset; 73 74 // Now walk each name record looking for a Mac or Windows PostScript name. 75 UINT offset = 6; 76 for (int i = 0; i < numberOfRecords; i++) { 77 if (bufferSize < offset + 12) 78 return NULL; 79 80 USHORT platformID = readBigEndianWord(buffer + offset); 81 USHORT encodingID = readBigEndianWord(buffer + offset + 2); 82 USHORT languageID = readBigEndianWord(buffer + offset + 4); 83 USHORT nameID = readBigEndianWord(buffer + offset + 6); 84 USHORT length = readBigEndianWord(buffer + offset + 8); 85 USHORT nameOffset = readBigEndianWord(buffer + offset + 10); 86 87 if (platformID == 3 && encodingID == 1 && languageID == 0x409 && nameID == 6) { 88 // This is a Windows PostScript name and is therefore UTF-16. 89 // Pass Big Endian as the encoding. 90 if (bufferSize < stringsOffset + nameOffset + length) 91 return NULL; 92 result = adoptCF(CFStringCreateWithBytes(NULL, strings + nameOffset, length, kCFStringEncodingUTF16BE, false)); 93 break; 94 } else if (platformID == 1 && encodingID == 0 && languageID == 0 && nameID == 6) { 95 // This is a Mac PostScript name and is therefore ASCII. 96 // See http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6name.html 97 if (bufferSize < stringsOffset + nameOffset + length) 98 return NULL; 99 result = adoptCF(CFStringCreateWithBytes(NULL, strings + nameOffset, length, kCFStringEncodingASCII, false)); 100 break; 101 } 102 103 offset += 12; 104 } 105 106 if (result) 107 nameMap.set(faceString, result); 108 return result.get(); 109} 110 111void FontPlatformData::platformDataInit(HFONT font, float size, HDC hdc, WCHAR* faceName) 112{ 113 LOGFONT logfont; 114 GetObject(font, sizeof(logfont), &logfont); 115 m_cgFont = adoptCF(CGFontCreateWithPlatformFont(&logfont)); 116} 117 118FontPlatformData::FontPlatformData(GDIObject<HFONT> hfont, CGFontRef font, float size, bool bold, bool oblique, bool useGDI) 119 : m_syntheticBold(bold) 120 , m_syntheticOblique(oblique) 121 , m_orientation(Horizontal) 122 , m_size(size) 123 , m_widthVariant(RegularWidth) 124 , m_font(SharedGDIObject<HFONT>::create(WTF::move(hfont))) 125 , m_cgFont(font) 126 , m_isColorBitmapFont(false) 127 , m_isCompositeFontReference(false) 128 , m_useGDI(useGDI) 129{ 130} 131 132FontPlatformData::~FontPlatformData() 133{ 134} 135 136void FontPlatformData::platformDataInit(const FontPlatformData& source) 137{ 138 m_font = source.m_font; 139 m_cgFont = source.m_cgFont; 140 m_useGDI = source.m_useGDI; 141} 142 143const FontPlatformData& FontPlatformData::platformDataAssign(const FontPlatformData& other) 144{ 145 m_font = other.m_font; 146 m_cgFont = other.m_cgFont; 147 m_useGDI = other.m_useGDI; 148 149 return *this; 150} 151 152bool FontPlatformData::platformIsEqual(const FontPlatformData& other) const 153{ 154 return m_font == other.m_font 155 && m_cgFont == other.m_cgFont 156 && m_useGDI == other.m_useGDI; 157} 158 159} 160