1 /*
2 *
3 * (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved
4 *
5 */
6
7 #include "LETypes.h"
8 #include "LEGlyphFilter.h"
9 #include "OpenTypeTables.h"
10 #include "GlyphSubstitutionTables.h"
11 #include "SingleSubstitutionSubtables.h"
12 #include "GlyphIterator.h"
13 #include "LESwaps.h"
14
15 U_NAMESPACE_BEGIN
16
process(const LEReferenceTo<SingleSubstitutionSubtable> & base,GlyphIterator * glyphIterator,LEErrorCode & success,const LEGlyphFilter * filter) const17 le_uint32 SingleSubstitutionSubtable::process(const LEReferenceTo<SingleSubstitutionSubtable> &base, GlyphIterator *glyphIterator, LEErrorCode &success, const LEGlyphFilter *filter) const
18 {
19 switch(SWAPW(subtableFormat))
20 {
21 case 0:
22 return 0;
23
24 case 1:
25 {
26 const LEReferenceTo<SingleSubstitutionFormat1Subtable> subtable(base, success, (const SingleSubstitutionFormat1Subtable *) this);
27
28 return subtable->process(subtable, glyphIterator, success, filter);
29 }
30
31 case 2:
32 {
33 const LEReferenceTo<SingleSubstitutionFormat2Subtable> subtable(base, success, (const SingleSubstitutionFormat2Subtable *) this);
34
35 return subtable->process(subtable, glyphIterator, success, filter);
36 }
37
38 default:
39 return 0;
40 }
41 }
42
process(const LEReferenceTo<SingleSubstitutionFormat1Subtable> & base,GlyphIterator * glyphIterator,LEErrorCode & success,const LEGlyphFilter * filter) const43 le_uint32 SingleSubstitutionFormat1Subtable::process(const LEReferenceTo<SingleSubstitutionFormat1Subtable> &base, GlyphIterator *glyphIterator, LEErrorCode &success, const LEGlyphFilter *filter) const
44 {
45 LEGlyphID glyph = glyphIterator->getCurrGlyphID();
46 le_int32 coverageIndex = getGlyphCoverage(base, glyph, success);
47
48 if (coverageIndex >= 0) {
49 TTGlyphID substitute = ((TTGlyphID) LE_GET_GLYPH(glyph)) + SWAPW(deltaGlyphID);
50
51 if (filter == NULL || filter->accept(LE_SET_GLYPH(glyph, substitute))) {
52 glyphIterator->setCurrGlyphID(substitute);
53 }
54
55 return 1;
56 }
57
58 return 0;
59 }
60
process(const LEReferenceTo<SingleSubstitutionFormat2Subtable> & base,GlyphIterator * glyphIterator,LEErrorCode & success,const LEGlyphFilter * filter) const61 le_uint32 SingleSubstitutionFormat2Subtable::process(const LEReferenceTo<SingleSubstitutionFormat2Subtable> &base, GlyphIterator *glyphIterator, LEErrorCode &success, const LEGlyphFilter *filter) const
62 {
63 LEGlyphID glyph = glyphIterator->getCurrGlyphID();
64 le_int32 coverageIndex = getGlyphCoverage(base, glyph, success);
65
66 if (coverageIndex >= 0) {
67 TTGlyphID substitute = SWAPW(substituteArray[coverageIndex]);
68
69 if (filter == NULL || filter->accept(LE_SET_GLYPH(glyph, substitute))) {
70 glyphIterator->setCurrGlyphID(substitute);
71 }
72
73 return 1;
74 }
75
76 return 0;
77 }
78
79 U_NAMESPACE_END
80