jdk/src/share/native/sun/font/layout/GlyphLookupTables.cpp
author duke
Sat, 01 Dec 2007 00:00:00 +0000
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/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Sun designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Sun in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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/*
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 *
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 * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved
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 *
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 */
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#include "LETypes.h"
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#include "OpenTypeTables.h"
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#include "ScriptAndLanguage.h"
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#include "GlyphLookupTables.h"
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#include "LESwaps.h"
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le_bool GlyphLookupTableHeader::coversScript(LETag scriptTag) const
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{
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    const ScriptListTable *scriptListTable = (const ScriptListTable *) ((char *)this + SWAPW(scriptListOffset));
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    return scriptListOffset != 0 && scriptListTable->findScript(scriptTag) != NULL;
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}
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le_bool GlyphLookupTableHeader::coversScriptAndLanguage(LETag scriptTag, LETag languageTag, le_bool exactMatch) const
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{
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    const ScriptListTable *scriptListTable = (const ScriptListTable *) ((char *)this + SWAPW(scriptListOffset));
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    const LangSysTable    *langSysTable    = scriptListTable->findLanguage(scriptTag, languageTag, exactMatch);
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    // FIXME: could check featureListOffset, lookupListOffset, and lookup count...
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    // Note: don't have to SWAPW langSysTable->featureCount to check for non-zero.
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    return langSysTable != NULL && langSysTable->featureCount != 0;
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}