Mercurial > hg > openjdk > jigsaw > jdk
view src/share/native/sun/font/layout/ExtensionSubtables.cpp @ 7317:32778f4f945f
8001031: Better font processing
Reviewed-by: srl, vadim
author | prr |
---|---|
date | Thu, 07 Mar 2013 10:02:20 -0800 |
parents | 1d4340015b85 |
children |
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/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ /* * * * (C) Copyright IBM Corp. 2002 - All Rights Reserved * */ #include "LETypes.h" #include "OpenTypeTables.h" #include "GlyphSubstitutionTables.h" #include "LookupProcessor.h" #include "ExtensionSubtables.h" #include "GlyphIterator.h" #include "LESwaps.h" U_NAMESPACE_BEGIN // read a 32-bit value that might only be 16-bit-aligned in memory #define READ_LONG(code) (le_uint32)((SWAPW(*(le_uint16*)&code) << 16) + SWAPW(*(((le_uint16*)&code) + 1))) // FIXME: should look at the format too... maybe have a sub-class for it? le_uint32 ExtensionSubtable::process(const LookupProcessor *lookupProcessor, le_uint16 lookupType, GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode& success) const { const LEReferenceTo<ExtensionSubtable> thisRef(lookupProcessor->getReference(), success); // create a reference to this if (LE_FAILURE(success)) { return 0; } le_uint16 elt = SWAPW(extensionLookupType); if (elt != lookupType) { le_uint32 extOffset = READ_LONG(extensionOffset); LEReferenceTo<LookupSubtable> subtable(thisRef, success, extOffset); if(LE_SUCCESS(success)) { return lookupProcessor->applySubtable(subtable, elt, glyphIterator, fontInstance, success); } } return 0; } U_NAMESPACE_END