1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/*
*
* (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
|
