1/* 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. Oracle designates this 7 * particular file as subject to the "Classpath" exception as provided 8 * by Oracle in the LICENSE file that accompanied this code. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26/* 27 * 28 * (C) Copyright IBM Corp. 1998-2004 - All Rights Reserved 29 * 30 */ 31 32#include "LETypes.h" 33#include "LEGlyphFilter.h" 34#include "OpenTypeTables.h" 35#include "GlyphSubstitutionTables.h" 36#include "SingleSubstitutionSubtables.h" 37#include "GlyphIterator.h" 38#include "LESwaps.h" 39 40U_NAMESPACE_BEGIN 41 42le_uint32 SingleSubstitutionSubtable::process(const LEReferenceTo<SingleSubstitutionSubtable> &base, GlyphIterator *glyphIterator, LEErrorCode &success, const LEGlyphFilter *filter) const 43{ 44 switch(SWAPW(subtableFormat)) 45 { 46 case 0: 47 return 0; 48 49 case 1: 50 { 51 const LEReferenceTo<SingleSubstitutionFormat1Subtable> subtable(base, success, (const SingleSubstitutionFormat1Subtable *) this); 52 53 return subtable->process(subtable, glyphIterator, success, filter); 54 } 55 56 case 2: 57 { 58 const LEReferenceTo<SingleSubstitutionFormat2Subtable> subtable(base, success, (const SingleSubstitutionFormat2Subtable *) this); 59 60 return subtable->process(subtable, glyphIterator, success, filter); 61 } 62 63 default: 64 return 0; 65 } 66} 67 68le_uint32 SingleSubstitutionFormat1Subtable::process(const LEReferenceTo<SingleSubstitutionFormat1Subtable> &base, GlyphIterator *glyphIterator, LEErrorCode &success, const LEGlyphFilter *filter) const 69{ 70 LEGlyphID glyph = glyphIterator->getCurrGlyphID(); 71 le_int32 coverageIndex = getGlyphCoverage(base, glyph, success); 72 if (LE_FAILURE(success)) { 73 return 0; 74 } 75 76 if (coverageIndex >= 0) { 77 TTGlyphID substitute = ((TTGlyphID) LE_GET_GLYPH(glyph)) + SWAPW(deltaGlyphID); 78 79 if (filter == NULL || filter->accept(LE_SET_GLYPH(glyph, substitute), success)) { 80 glyphIterator->setCurrGlyphID(substitute); 81 } 82 83 return 1; 84 } 85 86 return 0; 87} 88 89le_uint32 SingleSubstitutionFormat2Subtable::process(const LEReferenceTo<SingleSubstitutionFormat2Subtable> &base, GlyphIterator *glyphIterator, LEErrorCode &success, const LEGlyphFilter *filter) const 90{ 91 LEGlyphID glyph = glyphIterator->getCurrGlyphID(); 92 le_int32 coverageIndex = getGlyphCoverage(base, glyph, success); 93 if (LE_FAILURE(success)) { 94 return 0; 95 } 96 97 LEReferenceToArrayOf<TTGlyphID> substituteArrayRef(base, success, substituteArray, SWAPW(glyphCount)); 98 99 if (coverageIndex >= 0 && LE_SUCCESS(success) && coverageIndex < substituteArrayRef.getCount()) { 100 TTGlyphID substitute = SWAPW(substituteArray[coverageIndex]); 101 102 if (filter == NULL || filter->accept(LE_SET_GLYPH(glyph, substitute), success)) { 103 glyphIterator->setCurrGlyphID(substitute); 104 } 105 106 return 1; 107 } 108 109 return 0; 110} 111 112U_NAMESPACE_END 113