jdk/src/share/native/sun/font/layout/ClassDefinitionTables.cpp

/*
 * 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. 1998-2004 - All Rights Reserved
 *
 */

#include "LETypes.h"
#include "OpenTypeTables.h"
#include "OpenTypeUtilities.h"
#include "ClassDefinitionTables.h"
#include "LESwaps.h"

le_int32 ClassDefinitionTable::getGlyphClass(LEGlyphID glyphID) const
{
    switch(SWAPW(classFormat)) {
    case 0:
        return 0;

    case 1:
    {
        const ClassDefFormat1Table *f1Table = (const ClassDefFormat1Table *) this;

        return f1Table->getGlyphClass(glyphID);
    }

    case 2:
    {
        const ClassDefFormat2Table *f2Table = (const ClassDefFormat2Table *) this;

        return f2Table->getGlyphClass(glyphID);
    }

    default:
        return 0;
    }
}

le_bool ClassDefinitionTable::hasGlyphClass(le_int32 glyphClass) const
{
    switch(SWAPW(classFormat)) {
    case 0:
        return 0;

    case 1:
    {
        const ClassDefFormat1Table *f1Table = (const ClassDefFormat1Table *) this;

        return f1Table->hasGlyphClass(glyphClass);
    }

    case 2:
    {
        const ClassDefFormat2Table *f2Table = (const ClassDefFormat2Table *) this;

        return f2Table->hasGlyphClass(glyphClass);
    }

    default:
        return 0;
    }
}

le_int32 ClassDefFormat1Table::getGlyphClass(LEGlyphID glyphID) const
{
    TTGlyphID ttGlyphID  = (TTGlyphID) LE_GET_GLYPH(glyphID);
    TTGlyphID firstGlyph = SWAPW(startGlyph);
    TTGlyphID lastGlyph  = firstGlyph + SWAPW(glyphCount);

    if (ttGlyphID > firstGlyph && ttGlyphID < lastGlyph) {
        return SWAPW(classValueArray[ttGlyphID - firstGlyph]);
    }

    return 0;
}

le_bool ClassDefFormat1Table::hasGlyphClass(le_int32 glyphClass) const
{
    le_uint16 count  = SWAPW(glyphCount);
    int i;

    for (i = 0; i < count; i += 1) {
        if (SWAPW(classValueArray[i]) == glyphClass) {
            return TRUE;
        }
    }

    return FALSE;
}

le_int32 ClassDefFormat2Table::getGlyphClass(LEGlyphID glyphID) const
{
    TTGlyphID ttGlyph    = (TTGlyphID) LE_GET_GLYPH(glyphID);
    le_uint16 rangeCount = SWAPW(classRangeCount);
    le_int32  rangeIndex =
        OpenTypeUtilities::getGlyphRangeIndex(ttGlyph, classRangeRecordArray, rangeCount);

    if (rangeIndex < 0) {
        return 0;
    }

    return SWAPW(classRangeRecordArray[rangeIndex].rangeValue);
}

le_bool ClassDefFormat2Table::hasGlyphClass(le_int32 glyphClass) const
{
    le_uint16 rangeCount = SWAPW(classRangeCount);
    int i;

    for (i = 0; i < rangeCount; i += 1) {
        if (SWAPW(classRangeRecordArray[i].rangeValue) == glyphClass) {
            return TRUE;
        }
    }

    return FALSE;
}