/*

 * 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

 *

 */

#include "LETypes.h"

#include "LayoutEngine.h"

#include "GXLayoutEngine.h"

#include "LEGlyphStorage.h"

#include "MorphTables.h"

GXLayoutEngine::GXLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode,

    le_int32 languageCode, const MorphTableHeader *morphTable)

    : LayoutEngine(fontInstance, scriptCode, languageCode, 0), fMorphTable(morphTable)

{

    // nothing else to do?

}

GXLayoutEngine::~GXLayoutEngine()

{

    reset();

}

// apply 'mort' table

le_int32 GXLayoutEngine::computeGlyphs(const LEUnicode chars[], le_int32 offset,

    le_int32 count, le_int32 max, le_bool rightToLeft, LEGlyphStorage &glyphStorage,

    LEErrorCode &success)

{

    if (LE_FAILURE(success)) {

        return 0;

    }

    if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) {

        success = LE_ILLEGAL_ARGUMENT_ERROR;

        return 0;

    }

    mapCharsToGlyphs(chars, offset, count, FALSE, rightToLeft, glyphStorage, success);

    if (LE_FAILURE(success)) {

        return 0;

    }

    fMorphTable->process(glyphStorage);

    return count;

}

// apply positional tables

void GXLayoutEngine::adjustGlyphPositions(const LEUnicode chars[],

    le_int32 offset, le_int32 count, le_bool /*reverse*/,

    LEGlyphStorage &/*glyphStorage*/, LEErrorCode &success)

{

    if (LE_FAILURE(success)) {

        return;

    }

    if (chars == NULL || offset < 0 || count < 0) {

        success = LE_ILLEGAL_ARGUMENT_ERROR;

        return;

    }

    // FIXME: no positional processing yet...

}