diff options
Diffstat (limited to 'WebCore/platform/graphics/win/FontPlatformDataCGWin.cpp')
-rw-r--r-- | WebCore/platform/graphics/win/FontPlatformDataCGWin.cpp | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/WebCore/platform/graphics/win/FontPlatformDataCGWin.cpp b/WebCore/platform/graphics/win/FontPlatformDataCGWin.cpp new file mode 100644 index 0000000..bbfdb9f --- /dev/null +++ b/WebCore/platform/graphics/win/FontPlatformDataCGWin.cpp @@ -0,0 +1,134 @@ +/* + * This file is part of the internal font implementation. It should not be included by anyone other than + * FontMac.cpp, FontWin.cpp and Font.cpp. + * + * Copyright (C) 2006, 2007, 2008 Apple Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + */ + +#include "config.h" +#include "FontPlatformData.h" + +#include "PlatformString.h" +#include "StringHash.h" +#include <ApplicationServices/ApplicationServices.h> +#include <wtf/HashMap.h> +#include <wtf/RetainPtr.h> +#include <wtf/Vector.h> + +using std::min; + +namespace WebCore { + +static inline USHORT readBigEndianWord(const BYTE* word) { return (word[0] << 8) | word[1]; } + +static CFStringRef getPostScriptName(CFStringRef faceName, HDC dc) +{ + const DWORD cMaxNameTableSize = 1024 * 1024; + + static HashMap<String, RetainPtr<CFStringRef> > nameMap; + + // Check our hash first. + String faceString(faceName); + RetainPtr<CFStringRef> result = nameMap.get(faceString); + if (result) + return result.get(); + + // We need to obtain the PostScript name from the name table and use it instead,. + DWORD bufferSize = GetFontData(dc, 'eman', 0, NULL, 0); // "name" backwards + if (bufferSize == 0 || bufferSize == GDI_ERROR || bufferSize > cMaxNameTableSize) + return NULL; + + Vector<BYTE> bufferVector(bufferSize); + BYTE* buffer = bufferVector.data(); + if (GetFontData(dc, 'eman', 0, buffer, bufferSize) == GDI_ERROR) + return NULL; + + if (bufferSize < 6) + return NULL; + + USHORT numberOfRecords = readBigEndianWord(buffer + 2); + UINT stringsOffset = readBigEndianWord(buffer + 4); + if (bufferSize < stringsOffset) + return NULL; + + BYTE* strings = buffer + stringsOffset; + + // Now walk each name record looking for a Mac or Windows PostScript name. + UINT offset = 6; + for (int i = 0; i < numberOfRecords; i++) { + if (bufferSize < offset + 12) + return NULL; + + USHORT platformID = readBigEndianWord(buffer + offset); + USHORT encodingID = readBigEndianWord(buffer + offset + 2); + USHORT languageID = readBigEndianWord(buffer + offset + 4); + USHORT nameID = readBigEndianWord(buffer + offset + 6); + USHORT length = readBigEndianWord(buffer + offset + 8); + USHORT nameOffset = readBigEndianWord(buffer + offset + 10); + + if (platformID == 3 && encodingID == 1 && languageID == 0x409 && nameID == 6) { + // This is a Windows PostScript name and is therefore UTF-16. + // Pass Big Endian as the encoding. + if (bufferSize < stringsOffset + nameOffset + length) + return NULL; + result.adoptCF(CFStringCreateWithBytes(NULL, strings + nameOffset, length, kCFStringEncodingUTF16BE, false)); + break; + } else if (platformID == 1 && encodingID == 0 && languageID == 0 && nameID == 6) { + // This is a Mac PostScript name and is therefore ASCII. + // See http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6name.html + if (bufferSize < stringsOffset + nameOffset + length) + return NULL; + result.adoptCF(CFStringCreateWithBytes(NULL, strings + nameOffset, length, kCFStringEncodingASCII, false)); + break; + } + + offset += 12; + } + + if (result) + nameMap.set(faceString, result); + return result.get(); +} + +void FontPlatformData::platformDataInit(HFONT font, float size, HDC hdc, WCHAR* faceName) +{ + // Try the face name first. Windows may end up localizing this name, and CG doesn't know about + // the localization. If the create fails, we'll try the PostScript name. + RetainPtr<CFStringRef> fullName(AdoptCF, CFStringCreateWithCharacters(NULL, (const UniChar*)faceName, wcslen(faceName))); + m_cgFont.adoptCF(CGFontCreateWithFontName(fullName.get())); + if (!m_cgFont) { + CFStringRef postScriptName = getPostScriptName(fullName.get(), hdc); + if (postScriptName) { + m_cgFont.adoptCF(CGFontCreateWithFontName(postScriptName)); + ASSERT(m_cgFont); + } + } +} + +FontPlatformData::FontPlatformData(HFONT hfont, CGFontRef font, float size, bool bold, bool oblique, bool useGDI) + : m_font(RefCountedHFONT::create(hfont)) + , m_size(size) + , m_cgFont(font) + , m_syntheticBold(bold) + , m_syntheticOblique(oblique) + , m_useGDI(useGDI) +{ +} + +} |