/*

 * 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.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 *

 */

/*

 *

 * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved

 *

 */

#ifndef __LOOKUPPROCESSOR_H

#define __LOOKUPPROCESSOR_H

#include "LETypes.h"

#include "LEFontInstance.h"

#include "OpenTypeTables.h"

class  LEFontInstance;

class  LEGlyphStorage;

class  GlyphIterator;

class  GlyphPositionAdjustments;

struct FeatureTable;

struct FeatureListTable;

struct GlyphDefinitionTableHeader;

struct LookupSubtable;

struct LookupTable;

class LookupProcessor

{

public:

    le_int32 process(LEGlyphStorage &glyphStorage,

        GlyphPositionAdjustments *glyphPositionAdjustments,

        le_bool rightToLeft, const GlyphDefinitionTableHeader *glyphDefinitionTableHeader,

        const LEFontInstance *fontInstance) const;

    le_uint32 applyLookupTable(const LookupTable *lookupTable, GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const;

    le_uint32 applySingleLookup(le_uint16 lookupTableIndex, GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const;

    virtual le_uint32 applySubtable(const LookupSubtable *lookupSubtable, le_uint16 subtableType,

        GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const = 0;

    virtual ~LookupProcessor();

protected:

    LookupProcessor(const char *baseAddress,

        Offset scriptListOffset, Offset featureListOffset, Offset lookupListOffset,

        LETag scriptTag, LETag languageTag, const FeatureMap *featureMap,

        le_int32 featureMapCount, le_bool orderFeatures);

    LookupProcessor();

    le_int32 selectLookups(const FeatureTable *featureTable, FeatureMask featureMask, le_int32 order);

    const LookupListTable   *lookupListTable;

    const FeatureListTable  *featureListTable;

    FeatureMask             *lookupSelectArray;

    le_uint16               *lookupOrderArray;

    le_uint32               lookupOrderCount;

private:

    LookupProcessor(const LookupProcessor &other); // forbid copying of this class

    LookupProcessor &operator=(const LookupProcessor &other); // forbid copying of this class

};

#endif