1 /*
2 *
3 * (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved
4 *
5 */
6
7 #include "LETypes.h"
8 #include "OpenTypeTables.h"
9 #include "OpenTypeUtilities.h"
10 #include "ClassDefinitionTables.h"
11 #include "LESwaps.h"
12
13 U_NAMESPACE_BEGIN
14
getGlyphClass(const LETableReference & base,LEGlyphID glyphID,LEErrorCode & success) const15 le_int32 ClassDefinitionTable::getGlyphClass(const LETableReference& base, LEGlyphID glyphID, LEErrorCode &success) const
16 {
17 LEReferenceTo<ClassDefinitionTable> thisRef(base, success);
18 if (LE_FAILURE(success)) return 0;
19
20 switch(SWAPW(classFormat)) {
21 case 0:
22 return 0;
23
24 case 1:
25 {
26 const LEReferenceTo<ClassDefFormat1Table> f1Table(thisRef, success);
27 return f1Table->getGlyphClass(f1Table, glyphID, success);
28 }
29
30 case 2:
31 {
32 const LEReferenceTo<ClassDefFormat2Table> f2Table(thisRef, success);
33 return f2Table->getGlyphClass(f2Table, glyphID, success);
34 }
35
36 default:
37 return 0;
38 }
39 }
40
hasGlyphClass(const LETableReference & base,le_int32 glyphClass,LEErrorCode & success) const41 le_bool ClassDefinitionTable::hasGlyphClass(const LETableReference &base, le_int32 glyphClass, LEErrorCode &success) const
42 {
43 LEReferenceTo<ClassDefinitionTable> thisRef(base, success);
44 if (LE_FAILURE(success)) return 0;
45
46 switch(SWAPW(classFormat)) {
47 case 0:
48 return 0;
49
50 case 1:
51 {
52 const LEReferenceTo<ClassDefFormat1Table> f1Table(thisRef, success);
53 return f1Table->hasGlyphClass(f1Table, glyphClass, success);
54 }
55
56 case 2:
57 {
58 const LEReferenceTo<ClassDefFormat2Table> f2Table(thisRef, success);
59 return f2Table->hasGlyphClass(f2Table, glyphClass, success);
60 }
61
62 default:
63 return 0;
64 }
65 }
66
getGlyphClass(const LETableReference & base,LEGlyphID glyphID,LEErrorCode & success) const67 le_int32 ClassDefFormat1Table::getGlyphClass(const LETableReference& base, LEGlyphID glyphID, LEErrorCode &success) const
68 {
69 if(LE_FAILURE(success)) return 0;
70
71 le_uint16 count = SWAPW(glyphCount);
72 LEReferenceToArrayOf<le_uint16> classValueArrayRef(base, success, &classValueArray[0], count);
73 TTGlyphID ttGlyphID = (TTGlyphID) LE_GET_GLYPH(glyphID);
74 TTGlyphID firstGlyph = SWAPW(startGlyph);
75 TTGlyphID lastGlyph = firstGlyph + count;
76
77 if (LE_SUCCESS(success) && ttGlyphID >= firstGlyph && ttGlyphID < lastGlyph) {
78 return SWAPW( classValueArrayRef(ttGlyphID - firstGlyph, success) );
79 }
80
81 return 0;
82 }
83
hasGlyphClass(const LETableReference & base,le_int32 glyphClass,LEErrorCode & success) const84 le_bool ClassDefFormat1Table::hasGlyphClass(const LETableReference &base, le_int32 glyphClass, LEErrorCode &success) const
85 {
86 if(LE_FAILURE(success)) return 0;
87 le_uint16 count = SWAPW(glyphCount);
88 LEReferenceToArrayOf<le_uint16> classValueArrayRef(base, success, &classValueArray[0], count);
89 int i;
90
91 for (i = 0; LE_SUCCESS(success)&& (i < count); i += 1) {
92 if (SWAPW(classValueArrayRef(i,success)) == glyphClass) {
93 return TRUE;
94 }
95 }
96
97 return FALSE;
98 }
99
getGlyphClass(const LETableReference & base,LEGlyphID glyphID,LEErrorCode & success) const100 le_int32 ClassDefFormat2Table::getGlyphClass(const LETableReference& base, LEGlyphID glyphID, LEErrorCode &success) const
101 {
102 if(LE_FAILURE(success)) return 0;
103 TTGlyphID ttGlyph = (TTGlyphID) LE_GET_GLYPH(glyphID);
104 le_uint16 rangeCount = SWAPW(classRangeCount);
105 LEReferenceToArrayOf<GlyphRangeRecord> classRangeRecordArrayRef(base, success, &classRangeRecordArray[0], rangeCount);
106 le_int32 rangeIndex =
107 OpenTypeUtilities::getGlyphRangeIndex(ttGlyph, classRangeRecordArrayRef, success);
108
109 if (rangeIndex < 0 || LE_FAILURE(success)) {
110 return 0;
111 }
112
113 return SWAPW(classRangeRecordArrayRef(rangeIndex, success).rangeValue);
114 }
115
hasGlyphClass(const LETableReference & base,le_int32 glyphClass,LEErrorCode & success) const116 le_bool ClassDefFormat2Table::hasGlyphClass(const LETableReference &base, le_int32 glyphClass, LEErrorCode &success) const
117 {
118 if(LE_FAILURE(success)) return 0;
119 le_uint16 rangeCount = SWAPW(classRangeCount);
120 LEReferenceToArrayOf<GlyphRangeRecord> classRangeRecordArrayRef(base, success, &classRangeRecordArray[0], rangeCount);
121 int i;
122
123 for (i = 0; i < rangeCount && LE_SUCCESS(success); i += 1) {
124 if (SWAPW(classRangeRecordArrayRef(i,success).rangeValue) == glyphClass) {
125 return TRUE;
126 }
127 }
128
129 return FALSE;
130 }
131
132 U_NAMESPACE_END
133