/* * * (C) Copyright IBM Corp. and others 1998-2013 - All Rights Reserved * */ #include "LETypes.h" #include "MorphTables.h" #include "StateTables.h" #include "MorphStateTables.h" #include "SubtableProcessor2.h" #include "StateTableProcessor2.h" #include "ContextualGlyphInsertionProc2.h" #include "LEGlyphStorage.h" #include "LESwaps.h" U_NAMESPACE_BEGIN UOBJECT_DEFINE_RTTI_IMPLEMENTATION(ContextualGlyphInsertionProcessor2) ContextualGlyphInsertionProcessor2::ContextualGlyphInsertionProcessor2( const LEReferenceTo<MorphSubtableHeader2> &morphSubtableHeader, LEErrorCode &success) : StateTableProcessor2(morphSubtableHeader, success) { contextualGlyphHeader = LEReferenceTo<ContextualGlyphInsertionHeader2>(morphSubtableHeader, success); if(LE_FAILURE(success) || !contextualGlyphHeader.isValid()) return; le_uint32 insertionTableOffset = SWAPL(contextualGlyphHeader->insertionTableOffset); insertionTable = LEReferenceToArrayOf<le_uint16>(stHeader, success, insertionTableOffset, LE_UNBOUNDED_ARRAY); entryTable = LEReferenceToArrayOf<ContextualGlyphInsertionStateEntry2>(stHeader, success, entryTableOffset, LE_UNBOUNDED_ARRAY); } ContextualGlyphInsertionProcessor2::~ContextualGlyphInsertionProcessor2() { } void ContextualGlyphInsertionProcessor2::beginStateTable() { markGlyph = 0; } void ContextualGlyphInsertionProcessor2::doInsertion(LEGlyphStorage &glyphStorage, le_int16 atGlyph, le_int16 &index, le_int16 count, le_bool /* isKashidaLike */, le_bool isBefore, LEErrorCode &success) { LEGlyphID *insertGlyphs = glyphStorage.insertGlyphs(atGlyph, count + 1, success); if(LE_FAILURE(success) || insertGlyphs==NULL) { return; } // Note: Kashida vs Split Vowel seems to only affect selection and highlighting. // We note the flag, but do not layout different. // https://developer.apple.com/fonts/TTRefMan/RM06/Chap6mort.html le_int16 targetIndex = 0; if(isBefore) { // insert at beginning insertGlyphs[targetIndex++] = glyphStorage[atGlyph]; } else { // insert at end insertGlyphs[count] = glyphStorage[atGlyph]; } while(count--) { insertGlyphs[targetIndex++] = insertionTable.getObject(index++, success); } glyphStorage.applyInsertions(); } le_uint16 ContextualGlyphInsertionProcessor2::processStateEntry(LEGlyphStorage &glyphStorage, le_int32 &currGlyph, EntryTableIndex2 index, LEErrorCode &success) { const ContextualGlyphInsertionStateEntry2 *entry = entryTable.getAlias(index, success); if(LE_FAILURE(success)) return 0; // TODO- which state? le_uint16 newState = SWAPW(entry->newStateIndex); le_uint16 flags = SWAPW(entry->flags); le_int16 markIndex = SWAPW(entry->markedInsertionListIndex); if (markIndex > 0) { le_int16 count = (flags & cgiMarkedInsertCountMask) >> 5; le_bool isKashidaLike = (flags & cgiMarkedIsKashidaLike); le_bool isBefore = (flags & cgiMarkInsertBefore); doInsertion(glyphStorage, markGlyph, markIndex, count, isKashidaLike, isBefore, success); } le_int16 currIndex = SWAPW(entry->currentInsertionListIndex); if (currIndex > 0) { le_int16 count = flags & cgiCurrentInsertCountMask; le_bool isKashidaLike = (flags & cgiCurrentIsKashidaLike); le_bool isBefore = (flags & cgiCurrentInsertBefore); doInsertion(glyphStorage, currGlyph, currIndex, count, isKashidaLike, isBefore, success); } if (flags & cgiSetMark) { markGlyph = currGlyph; } if (!(flags & cgiDontAdvance)) { currGlyph += dir; } return newState; } void ContextualGlyphInsertionProcessor2::endStateTable() { } U_NAMESPACE_END