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| 1 /* | |
| 2 * This file is part of the internal font implementation. It should not be inclu
ded 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 <ApplicationServices/ApplicationServices.h> | |
| 28 #include <WebKitSystemInterface/WebKitSystemInterface.h> | |
| 29 #include <wtf/HashMap.h> | |
| 30 #include <wtf/RetainPtr.h> | |
| 31 #include <wtf/Vector.h> | |
| 32 #include <wtf/text/StringHash.h> | |
| 33 #include <wtf/text/WTFString.h> | |
| 34 | |
| 35 using std::min; | |
| 36 | |
| 37 namespace WebCore { | |
| 38 | |
| 39 static inline USHORT readBigEndianWord(const BYTE* word) { return (word[0] << 8)
| word[1]; } | |
| 40 | |
| 41 static CFStringRef getPostScriptName(CFStringRef faceName, HDC dc) | |
| 42 { | |
| 43 const DWORD cMaxNameTableSize = 1024 * 1024; | |
| 44 | |
| 45 static HashMap<String, RetainPtr<CFStringRef> > nameMap; | |
| 46 | |
| 47 // Check our hash first. | |
| 48 String faceString(faceName); | |
| 49 RetainPtr<CFStringRef> result = nameMap.get(faceString); | |
| 50 if (result) | |
| 51 return result.get(); | |
| 52 | |
| 53 // We need to obtain the PostScript name from the name table and use it inst
ead,. | |
| 54 DWORD bufferSize = GetFontData(dc, 'eman', 0, NULL, 0); // "name" backwards | |
| 55 if (bufferSize == 0 || bufferSize == GDI_ERROR || bufferSize > cMaxNameTable
Size) | |
| 56 return NULL; | |
| 57 | |
| 58 Vector<BYTE> bufferVector(bufferSize); | |
| 59 BYTE* buffer = bufferVector.data(); | |
| 60 if (GetFontData(dc, 'eman', 0, buffer, bufferSize) == GDI_ERROR) | |
| 61 return NULL; | |
| 62 | |
| 63 if (bufferSize < 6) | |
| 64 return NULL; | |
| 65 | |
| 66 USHORT numberOfRecords = readBigEndianWord(buffer + 2); | |
| 67 UINT stringsOffset = readBigEndianWord(buffer + 4); | |
| 68 if (bufferSize < stringsOffset) | |
| 69 return NULL; | |
| 70 | |
| 71 BYTE* strings = buffer + stringsOffset; | |
| 72 | |
| 73 // Now walk each name record looking for a Mac or Windows PostScript name. | |
| 74 UINT offset = 6; | |
| 75 for (int i = 0; i < numberOfRecords; i++) { | |
| 76 if (bufferSize < offset + 12) | |
| 77 return NULL; | |
| 78 | |
| 79 USHORT platformID = readBigEndianWord(buffer + offset); | |
| 80 USHORT encodingID = readBigEndianWord(buffer + offset + 2); | |
| 81 USHORT languageID = readBigEndianWord(buffer + offset + 4); | |
| 82 USHORT nameID = readBigEndianWord(buffer + offset + 6); | |
| 83 USHORT length = readBigEndianWord(buffer + offset + 8); | |
| 84 USHORT nameOffset = readBigEndianWord(buffer + offset + 10); | |
| 85 | |
| 86 if (platformID == 3 && encodingID == 1 && languageID == 0x409 && nameID
== 6) { | |
| 87 // This is a Windows PostScript name and is therefore UTF-16. | |
| 88 // Pass Big Endian as the encoding. | |
| 89 if (bufferSize < stringsOffset + nameOffset + length) | |
| 90 return NULL; | |
| 91 result.adoptCF(CFStringCreateWithBytes(NULL, strings + nameOffset, l
ength, kCFStringEncodingUTF16BE, false)); | |
| 92 break; | |
| 93 } else if (platformID == 1 && encodingID == 0 && languageID == 0 && name
ID == 6) { | |
| 94 // This is a Mac PostScript name and is therefore ASCII. | |
| 95 // See http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6name.
html | |
| 96 if (bufferSize < stringsOffset + nameOffset + length) | |
| 97 return NULL; | |
| 98 result.adoptCF(CFStringCreateWithBytes(NULL, strings + nameOffset, l
ength, kCFStringEncodingASCII, false)); | |
| 99 break; | |
| 100 } | |
| 101 | |
| 102 offset += 12; | |
| 103 } | |
| 104 | |
| 105 if (result) | |
| 106 nameMap.set(faceString, result); | |
| 107 return result.get(); | |
| 108 } | |
| 109 | |
| 110 void FontPlatformData::platformDataInit(HFONT font, float size, HDC hdc, WCHAR*
faceName) | |
| 111 { | |
| 112 LOGFONT logfont; | |
| 113 GetObject(font, sizeof(logfont), &logfont); | |
| 114 m_cgFont.adoptCF(CGFontCreateWithPlatformFont(&logfont)); | |
| 115 } | |
| 116 | |
| 117 FontPlatformData::FontPlatformData(HFONT hfont, CGFontRef font, float size, bool
bold, bool oblique, bool useGDI) | |
| 118 : m_syntheticBold(bold) | |
| 119 , m_syntheticOblique(oblique) | |
| 120 , m_orientation(Horizontal) | |
| 121 , m_size(size) | |
| 122 , m_widthVariant(RegularWidth) | |
| 123 , m_font(RefCountedGDIHandle<HFONT>::create(hfont)) | |
| 124 , m_cgFont(font) | |
| 125 , m_isColorBitmapFont(false) | |
| 126 , m_useGDI(useGDI) | |
| 127 { | |
| 128 } | |
| 129 | |
| 130 FontPlatformData::~FontPlatformData() | |
| 131 { | |
| 132 } | |
| 133 | |
| 134 void FontPlatformData::platformDataInit(const FontPlatformData& source) | |
| 135 { | |
| 136 m_font = source.m_font; | |
| 137 m_cgFont = source.m_cgFont; | |
| 138 m_useGDI = source.m_useGDI; | |
| 139 } | |
| 140 | |
| 141 const FontPlatformData& FontPlatformData::platformDataAssign(const FontPlatformD
ata& other) | |
| 142 { | |
| 143 m_font = other.m_font; | |
| 144 m_cgFont = other.m_cgFont; | |
| 145 m_useGDI = other.m_useGDI; | |
| 146 | |
| 147 return *this; | |
| 148 } | |
| 149 | |
| 150 bool FontPlatformData::platformIsEqual(const FontPlatformData& other) const | |
| 151 { | |
| 152 return m_font == other.m_font | |
| 153 && m_cgFont == other.m_cgFont | |
| 154 && m_useGDI == other.m_useGDI; | |
| 155 } | |
| 156 | |
| 157 } | |
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