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/*
* 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)
{
}
}
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