| /* |
| * 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 "AlternateSubstSubtables.h" |
| #include "GlyphIterator.h" |
| #include "LESwaps.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| le_uint32 AlternateSubstitutionSubtable::process(GlyphIterator *glyphIterator, const LEGlyphFilter *filter) const |
| { |
| // NOTE: For now, we'll just pick the first alternative... |
| LEGlyphID glyph = glyphIterator->getCurrGlyphID(); |
| le_int32 coverageIndex = getGlyphCoverage(glyph); |
| |
| if (coverageIndex >= 0) { |
| le_uint16 altSetCount = SWAPW(alternateSetCount); |
| |
| if (coverageIndex < altSetCount) { |
| Offset alternateSetTableOffset = SWAPW(alternateSetTableOffsetArray[coverageIndex]); |
| const AlternateSetTable *alternateSetTable = |
| (const AlternateSetTable *) ((char *) this + alternateSetTableOffset); |
| TTGlyphID alternate = SWAPW(alternateSetTable->alternateArray[0]); |
| |
| if (filter == NULL || filter->accept(LE_SET_GLYPH(glyph, alternate))) { |
| glyphIterator->setCurrGlyphID(SWAPW(alternateSetTable->alternateArray[0])); |
| } |
| |
| return 1; |
| } |
| |
| // XXXX If we get here, the table's mal-formed... |
| } |
| |
| return 0; |
| } |
| |
| U_NAMESPACE_END |
