/*
* 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. 1998-2004 - All Rights Reserved
*
*/
#include "LETypes.h"
#include "LEGlyphFilter.h"
#include "OpenTypeTables.h"
#include "GlyphSubstitutionTables.h"
#include "SingleSubstitutionSubtables.h"
#include "GlyphIterator.h"
#include "LESwaps.h"
U_NAMESPACE_BEGIN
le_uint32 SingleSubstitutionSubtable::process(const LEReferenceTo<SingleSubstitutionSubtable> &base, GlyphIterator *glyphIterator, LEErrorCode &success, const LEGlyphFilter *filter) const
{
switch(SWAPW(subtableFormat))
{
case 0:
return 0;
case 1:
{
const LEReferenceTo<SingleSubstitutionFormat1Subtable> subtable(base, success, (const SingleSubstitutionFormat1Subtable *) this);
return subtable->process(subtable, glyphIterator, success, filter);
}
case 2:
{
const LEReferenceTo<SingleSubstitutionFormat2Subtable> subtable(base, success, (const SingleSubstitutionFormat2Subtable *) this);
return subtable->process(subtable, glyphIterator, success, filter);
}
default:
return 0;
}
}
le_uint32 SingleSubstitutionFormat1Subtable::process(const LEReferenceTo<SingleSubstitutionFormat1Subtable> &base, GlyphIterator *glyphIterator, LEErrorCode &success, const LEGlyphFilter *filter) const
{
LEGlyphID glyph = glyphIterator->getCurrGlyphID();
le_int32 coverageIndex = getGlyphCoverage(base, glyph, success);
if (LE_FAILURE(success)) {
return 0;
}
if (coverageIndex >= 0) {
TTGlyphID substitute = ((TTGlyphID) LE_GET_GLYPH(glyph)) + SWAPW(deltaGlyphID);
if (filter == NULL || filter->accept(LE_SET_GLYPH(glyph, substitute))) {
glyphIterator->setCurrGlyphID(substitute);
}
return 1;
}
return 0;
}
le_uint32 SingleSubstitutionFormat2Subtable::process(const LEReferenceTo<SingleSubstitutionFormat2Subtable> &base, GlyphIterator *glyphIterator, LEErrorCode &success, const LEGlyphFilter *filter) const
{
LEGlyphID glyph = glyphIterator->getCurrGlyphID();
le_int32 coverageIndex = getGlyphCoverage(base, glyph, success);
if (LE_FAILURE(success)) {
return 0;
}
if (coverageIndex >= 0) {
TTGlyphID substitute = SWAPW(substituteArray[coverageIndex]);
if (filter == NULL || filter->accept(LE_SET_GLYPH(glyph, substitute))) {
glyphIterator->setCurrGlyphID(substitute);
}
return 1;
}
return 0;
}
U_NAMESPACE_END