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Commit | Line | Data |
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b75a7d8f | 1 | /* |
b75a7d8f | 2 | * |
729e4ab9 | 3 | * (C) Copyright IBM Corp. 1998-2010 - All Rights Reserved |
b75a7d8f A |
4 | * |
5 | */ | |
6 | ||
7 | #include "LETypes.h" | |
8 | #include "LEGlyphFilter.h" | |
9 | #include "LEFontInstance.h" | |
10 | #include "OpenTypeTables.h" | |
729e4ab9 | 11 | #include "ICUFeatures.h" |
b75a7d8f A |
12 | #include "Lookups.h" |
13 | #include "ScriptAndLanguage.h" | |
14 | #include "GlyphDefinitionTables.h" | |
15 | #include "GlyphSubstitutionTables.h" | |
16 | #include "SingleSubstitutionSubtables.h" | |
17 | #include "MultipleSubstSubtables.h" | |
18 | #include "AlternateSubstSubtables.h" | |
19 | #include "LigatureSubstSubtables.h" | |
20 | #include "ContextualSubstSubtables.h" | |
21 | #include "ExtensionSubtables.h" | |
22 | #include "LookupProcessor.h" | |
23 | #include "GlyphSubstLookupProc.h" | |
24 | #include "LESwaps.h" | |
25 | ||
26 | U_NAMESPACE_BEGIN | |
27 | ||
28 | GlyphSubstitutionLookupProcessor::GlyphSubstitutionLookupProcessor( | |
29 | const GlyphSubstitutionTableHeader *glyphSubstitutionTableHeader, | |
729e4ab9 A |
30 | LETag scriptTag, |
31 | LETag languageTag, | |
32 | const LEGlyphFilter *filter, | |
33 | const FeatureMap *featureMap, | |
34 | le_int32 featureMapCount, | |
35 | le_bool featureOrder, | |
36 | LEErrorCode& success) | |
b75a7d8f A |
37 | : LookupProcessor( |
38 | (char *) glyphSubstitutionTableHeader, | |
39 | SWAPW(glyphSubstitutionTableHeader->scriptListOffset), | |
40 | SWAPW(glyphSubstitutionTableHeader->featureListOffset), | |
41 | SWAPW(glyphSubstitutionTableHeader->lookupListOffset), | |
729e4ab9 | 42 | scriptTag, languageTag, featureMap, featureMapCount, featureOrder, success), fFilter(filter) |
b75a7d8f A |
43 | { |
44 | // anything? | |
45 | } | |
46 | ||
47 | GlyphSubstitutionLookupProcessor::GlyphSubstitutionLookupProcessor() | |
48 | { | |
49 | } | |
50 | ||
51 | le_uint32 GlyphSubstitutionLookupProcessor::applySubtable(const LookupSubtable *lookupSubtable, le_uint16 lookupType, | |
729e4ab9 | 52 | GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode& success) const |
b75a7d8f | 53 | { |
729e4ab9 A |
54 | if (LE_FAILURE(success)) { |
55 | return 0; | |
56 | } | |
57 | ||
b75a7d8f A |
58 | le_uint32 delta = 0; |
59 | ||
60 | switch(lookupType) | |
61 | { | |
62 | case 0: | |
63 | break; | |
64 | ||
65 | case gsstSingle: | |
66 | { | |
67 | const SingleSubstitutionSubtable *subtable = (const SingleSubstitutionSubtable *) lookupSubtable; | |
68 | ||
69 | delta = subtable->process(glyphIterator, fFilter); | |
70 | break; | |
71 | } | |
72 | ||
73 | case gsstMultiple: | |
74 | { | |
75 | const MultipleSubstitutionSubtable *subtable = (const MultipleSubstitutionSubtable *) lookupSubtable; | |
76 | ||
729e4ab9 | 77 | delta = subtable->process(glyphIterator, success, fFilter); |
b75a7d8f A |
78 | break; |
79 | } | |
80 | ||
81 | case gsstAlternate: | |
82 | { | |
83 | const AlternateSubstitutionSubtable *subtable = (const AlternateSubstitutionSubtable *) lookupSubtable; | |
84 | ||
85 | delta = subtable->process(glyphIterator, fFilter); | |
86 | break; | |
87 | } | |
88 | ||
89 | case gsstLigature: | |
90 | { | |
91 | const LigatureSubstitutionSubtable *subtable = (const LigatureSubstitutionSubtable *) lookupSubtable; | |
92 | ||
93 | delta = subtable->process(glyphIterator, fFilter); | |
94 | break; | |
95 | } | |
96 | ||
97 | case gsstContext: | |
98 | { | |
99 | const ContextualSubstitutionSubtable *subtable = (const ContextualSubstitutionSubtable *) lookupSubtable; | |
100 | ||
729e4ab9 | 101 | delta = subtable->process(this, glyphIterator, fontInstance, success); |
b75a7d8f A |
102 | break; |
103 | } | |
104 | ||
105 | case gsstChainingContext: | |
106 | { | |
107 | const ChainingContextualSubstitutionSubtable *subtable = (const ChainingContextualSubstitutionSubtable *) lookupSubtable; | |
108 | ||
729e4ab9 | 109 | delta = subtable->process(this, glyphIterator, fontInstance, success); |
b75a7d8f A |
110 | break; |
111 | } | |
112 | ||
113 | case gsstExtension: | |
114 | { | |
115 | const ExtensionSubtable *subtable = (const ExtensionSubtable *) lookupSubtable; | |
116 | ||
729e4ab9 | 117 | delta = subtable->process(this, lookupType, glyphIterator, fontInstance, success); |
b75a7d8f A |
118 | break; |
119 | } | |
120 | ||
121 | default: | |
122 | break; | |
123 | } | |
124 | ||
125 | return delta; | |
126 | } | |
127 | ||
128 | GlyphSubstitutionLookupProcessor::~GlyphSubstitutionLookupProcessor() | |
129 | { | |
130 | } | |
131 | ||
132 | U_NAMESPACE_END |