| /* |
| * 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 - 2005 - All Rights Reserved |
| * |
| */ |
| |
| #include "LETypes.h" |
| #include "LEFontInstance.h" |
| #include "OpenTypeTables.h" |
| #include "ICUFeatures.h" |
| #include "Lookups.h" |
| #include "ScriptAndLanguage.h" |
| #include "GlyphDefinitionTables.h" |
| #include "GlyphPositioningTables.h" |
| #include "SinglePositioningSubtables.h" |
| #include "PairPositioningSubtables.h" |
| #include "CursiveAttachmentSubtables.h" |
| #include "MarkToBasePosnSubtables.h" |
| #include "MarkToLigaturePosnSubtables.h" |
| #include "MarkToMarkPosnSubtables.h" |
| //#include "ContextualPositioningSubtables.h" |
| #include "ContextualSubstSubtables.h" |
| #include "ExtensionSubtables.h" |
| #include "LookupProcessor.h" |
| #include "GlyphPosnLookupProc.h" |
| #include "LESwaps.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| // Aside from the names, the contextual positioning subtables are |
| // the same as the contextual substitution subtables. |
| typedef ContextualSubstitutionSubtable ContextualPositioningSubtable; |
| typedef ChainingContextualSubstitutionSubtable ChainingContextualPositioningSubtable; |
| |
| GlyphPositioningLookupProcessor::GlyphPositioningLookupProcessor( |
| const LEReferenceTo<GlyphPositioningTableHeader> &glyphPositioningTableHeader, |
| LETag scriptTag, |
| LETag languageTag, |
| const FeatureMap *featureMap, |
| le_int32 featureMapCount, |
| le_bool featureOrder, |
| LEErrorCode& success) |
| : LookupProcessor( |
| glyphPositioningTableHeader, |
| SWAPW(glyphPositioningTableHeader->scriptListOffset), |
| SWAPW(glyphPositioningTableHeader->featureListOffset), |
| SWAPW(glyphPositioningTableHeader->lookupListOffset), |
| scriptTag, |
| languageTag, |
| featureMap, |
| featureMapCount, |
| featureOrder, |
| success |
| ) |
| { |
| // anything? |
| } |
| |
| GlyphPositioningLookupProcessor::GlyphPositioningLookupProcessor() |
| { |
| } |
| |
| le_uint32 GlyphPositioningLookupProcessor::applySubtable(const LEReferenceTo<LookupSubtable> &lookupSubtable, le_uint16 lookupType, |
| GlyphIterator *glyphIterator, |
| const LEFontInstance *fontInstance, |
| LEErrorCode& success) const |
| { |
| if (LE_FAILURE(success)) { |
| return 0; |
| } |
| |
| le_uint32 delta = 0; |
| |
| //_LETRACE("attempting lookupType #%d", lookupType); |
| |
| switch(lookupType) |
| { |
| case 0: |
| break; |
| |
| case gpstSingle: |
| { |
| LEReferenceTo<SinglePositioningSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(subtable, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| case gpstPair: |
| { |
| LEReferenceTo<PairPositioningSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(subtable, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| case gpstCursive: |
| { |
| LEReferenceTo<CursiveAttachmentSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(subtable, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| case gpstMarkToBase: |
| { |
| LEReferenceTo<MarkToBasePositioningSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(subtable, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| case gpstMarkToLigature: |
| { |
| LEReferenceTo<MarkToLigaturePositioningSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(subtable, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| case gpstMarkToMark: |
| { |
| LEReferenceTo<MarkToMarkPositioningSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(subtable, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| case gpstContext: |
| { |
| LEReferenceTo<ContextualPositioningSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(subtable, this , glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| case gpstChainedContext: |
| { |
| const LEReferenceTo<ChainingContextualPositioningSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(subtable, this, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| case gpstExtension: |
| { |
| const LEReferenceTo<ExtensionSubtable> subtable(lookupSubtable, success); |
| |
| delta = subtable->process(subtable, this, lookupType, glyphIterator, fontInstance, success); |
| break; |
| } |
| |
| default: |
| break; |
| } |
| |
| #if LE_TRACE |
| if(delta != 0) { |
| _LETRACE("GlyphPositioningLookupProcessor applied #%d -> delta %d @ %d", lookupType, delta, glyphIterator->getCurrStreamPosition()); |
| } |
| #endif |
| |
| return delta; |
| } |
| |
| GlyphPositioningLookupProcessor::~GlyphPositioningLookupProcessor() |
| { |
| } |
| |
| U_NAMESPACE_END |