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1/*
2 * %W% %W%
3 *
57a6839d 4 * (C) Copyright IBM Corp. 1998 - 2013 - All Rights Reserved
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5 *
6 */
7
8
9#include "LETypes.h"
10#include "LayoutTables.h"
11#include "MorphTables.h"
12#include "SubtableProcessor.h"
13#include "IndicRearrangementProcessor.h"
14#include "ContextualGlyphSubstProc.h"
15#include "LigatureSubstProc.h"
16#include "NonContextualGlyphSubstProc.h"
17//#include "ContextualGlyphInsertionProcessor.h"
374ca955 18#include "LEGlyphStorage.h"
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19#include "LESwaps.h"
20
21U_NAMESPACE_BEGIN
22
57a6839d 23void MorphTableHeader::process(const LETableReference &base, LEGlyphStorage &glyphStorage, LEErrorCode &success) const
b75a7d8f 24{
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25 le_uint32 chainCount = SWAPL(this->nChains);
26 LEReferenceTo<ChainHeader> chainHeader(base, success, chains); // moving header
27 LEReferenceToArrayOf<ChainHeader> chainHeaderArray(base, success, chains, chainCount);
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28 le_uint32 chain;
29
57a6839d 30 for (chain = 0; LE_SUCCESS(success) && (chain < chainCount); chain += 1) {
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31 FeatureFlags defaultFlags = SWAPL(chainHeader->defaultFlags);
32 le_uint32 chainLength = SWAPL(chainHeader->chainLength);
33 le_int16 nFeatureEntries = SWAPW(chainHeader->nFeatureEntries);
34 le_int16 nSubtables = SWAPW(chainHeader->nSubtables);
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35 LEReferenceTo<MorphSubtableHeader> subtableHeader =
36 LEReferenceTo<MorphSubtableHeader>(chainHeader,success, &(chainHeader->featureTable[nFeatureEntries]));
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37 le_int16 subtable;
38
57a6839d 39 for (subtable = 0; LE_SUCCESS(success) && (subtable < nSubtables); subtable += 1) {
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40 le_int16 length = SWAPW(subtableHeader->length);
41 SubtableCoverage coverage = SWAPW(subtableHeader->coverage);
42 FeatureFlags subtableFeatures = SWAPL(subtableHeader->subtableFeatures);
43
44 // should check coverage more carefully...
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45 if ((coverage & scfVertical) == 0 && (subtableFeatures & defaultFlags) != 0 && LE_SUCCESS(success)) {
46 subtableHeader->process(subtableHeader, glyphStorage, success);
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47 }
48
57a6839d 49 subtableHeader.addOffset(length, success);
b75a7d8f 50 }
57a6839d 51 chainHeader.addOffset(chainLength, success);
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52 }
53}
54
57a6839d 55void MorphSubtableHeader::process(const LEReferenceTo<MorphSubtableHeader> &base, LEGlyphStorage &glyphStorage, LEErrorCode &success) const
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56{
57 SubtableProcessor *processor = NULL;
58
59 switch (SWAPW(coverage) & scfTypeMask)
60 {
61 case mstIndicRearrangement:
57a6839d 62 processor = new IndicRearrangementProcessor(base, success);
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63 break;
64
65 case mstContextualGlyphSubstitution:
57a6839d 66 processor = new ContextualGlyphSubstitutionProcessor(base, success);
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67 break;
68
69 case mstLigatureSubstitution:
57a6839d 70 processor = new LigatureSubstitutionProcessor(base, success);
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71 break;
72
73 case mstReservedUnused:
74 break;
75
76 case mstNonContextualGlyphSubstitution:
57a6839d 77 processor = NonContextualGlyphSubstitutionProcessor::createInstance(base, success);
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78 break;
79
80 /*
81 case mstContextualGlyphInsertion:
82 processor = new ContextualGlyphInsertionProcessor(this);
83 break;
84 */
85
86 default:
87 break;
88 }
89
90 if (processor != NULL) {
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91 if(LE_SUCCESS(success)) {
92 processor->process(glyphStorage, success);
93 }
94 delete processor;
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95 }
96}
97
98U_NAMESPACE_END