J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 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. Sun designates this |
| 7 | * particular file as subject to the "Classpath" exception as provided |
| 8 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 21 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 22 | * have any questions. |
| 23 | * |
| 24 | */ |
| 25 | |
| 26 | /* |
| 27 | * |
| 28 | * (C) Copyright IBM Corp. 1998-2005 - All Rights Reserved |
| 29 | * |
| 30 | */ |
| 31 | |
| 32 | #include "LETypes.h" |
| 33 | #include "LEGlyphFilter.h" |
| 34 | #include "LEFontInstance.h" |
| 35 | #include "OpenTypeTables.h" |
| 36 | #include "Features.h" |
| 37 | #include "Lookups.h" |
| 38 | #include "ScriptAndLanguage.h" |
| 39 | #include "GlyphDefinitionTables.h" |
| 40 | #include "GlyphSubstitutionTables.h" |
| 41 | #include "SingleSubstitutionSubtables.h" |
| 42 | #include "MultipleSubstSubtables.h" |
| 43 | #include "AlternateSubstSubtables.h" |
| 44 | #include "LigatureSubstSubtables.h" |
| 45 | #include "ContextualSubstSubtables.h" |
| 46 | #include "ExtensionSubtables.h" |
| 47 | #include "LookupProcessor.h" |
| 48 | #include "GlyphSubstLookupProc.h" |
| 49 | #include "LESwaps.h" |
| 50 | |
| 51 | GlyphSubstitutionLookupProcessor::GlyphSubstitutionLookupProcessor( |
| 52 | const GlyphSubstitutionTableHeader *glyphSubstitutionTableHeader, |
| 53 | LETag scriptTag, LETag languageTag, const LEGlyphFilter *filter, |
| 54 | const FeatureMap *featureMap, le_int32 featureMapCount, le_bool featureOrder) |
| 55 | : LookupProcessor( |
| 56 | (char *) glyphSubstitutionTableHeader, |
| 57 | SWAPW(glyphSubstitutionTableHeader->scriptListOffset), |
| 58 | SWAPW(glyphSubstitutionTableHeader->featureListOffset), |
| 59 | SWAPW(glyphSubstitutionTableHeader->lookupListOffset), |
| 60 | scriptTag, languageTag, featureMap, featureMapCount, featureOrder) |
| 61 | , fFilter(filter) |
| 62 | { |
| 63 | // anything? |
| 64 | } |
| 65 | |
| 66 | GlyphSubstitutionLookupProcessor::GlyphSubstitutionLookupProcessor() |
| 67 | { |
| 68 | } |
| 69 | |
| 70 | le_uint32 GlyphSubstitutionLookupProcessor::applySubtable(const LookupSubtable *lookupSubtable, le_uint16 lookupType, |
| 71 | GlyphIterator *glyphIterator, const LEFontInstance *fontInstance) const |
| 72 | { |
| 73 | le_uint32 delta = 0; |
| 74 | |
| 75 | switch(lookupType) |
| 76 | { |
| 77 | case 0: |
| 78 | break; |
| 79 | |
| 80 | case gsstSingle: |
| 81 | { |
| 82 | const SingleSubstitutionSubtable *subtable = (const SingleSubstitutionSubtable *) lookupSubtable; |
| 83 | |
| 84 | delta = subtable->process(glyphIterator, fFilter); |
| 85 | break; |
| 86 | } |
| 87 | |
| 88 | case gsstMultiple: |
| 89 | { |
| 90 | const MultipleSubstitutionSubtable *subtable = (const MultipleSubstitutionSubtable *) lookupSubtable; |
| 91 | |
| 92 | delta = subtable->process(glyphIterator, fFilter); |
| 93 | break; |
| 94 | } |
| 95 | |
| 96 | case gsstAlternate: |
| 97 | { |
| 98 | const AlternateSubstitutionSubtable *subtable = (const AlternateSubstitutionSubtable *) lookupSubtable; |
| 99 | |
| 100 | delta = subtable->process(glyphIterator, fFilter); |
| 101 | break; |
| 102 | } |
| 103 | |
| 104 | case gsstLigature: |
| 105 | { |
| 106 | const LigatureSubstitutionSubtable *subtable = (const LigatureSubstitutionSubtable *) lookupSubtable; |
| 107 | |
| 108 | delta = subtable->process(glyphIterator, fFilter); |
| 109 | break; |
| 110 | } |
| 111 | |
| 112 | case gsstContext: |
| 113 | { |
| 114 | const ContextualSubstitutionSubtable *subtable = (const ContextualSubstitutionSubtable *) lookupSubtable; |
| 115 | |
| 116 | delta = subtable->process(this, glyphIterator, fontInstance); |
| 117 | break; |
| 118 | } |
| 119 | |
| 120 | case gsstChainingContext: |
| 121 | { |
| 122 | const ChainingContextualSubstitutionSubtable *subtable = (const ChainingContextualSubstitutionSubtable *) lookupSubtable; |
| 123 | |
| 124 | delta = subtable->process(this, glyphIterator, fontInstance); |
| 125 | break; |
| 126 | } |
| 127 | |
| 128 | case gsstExtension: |
| 129 | { |
| 130 | const ExtensionSubtable *subtable = (const ExtensionSubtable *) lookupSubtable; |
| 131 | |
| 132 | delta = subtable->process(this, lookupType, glyphIterator, fontInstance); |
| 133 | break; |
| 134 | } |
| 135 | |
| 136 | default: |
| 137 | break; |
| 138 | } |
| 139 | |
| 140 | return delta; |
| 141 | } |
| 142 | |
| 143 | GlyphSubstitutionLookupProcessor::~GlyphSubstitutionLookupProcessor() |
| 144 | { |
| 145 | } |