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1 /*
2 * (C) Copyright IBM Corp. 1998 - 2013 - All Rights Reserved
3 *
4 */
5
6 #include "LETypes.h"
7 #include "OpenTypeTables.h"
8 #include "GlyphPositioningTables.h"
9 #include "CursiveAttachmentSubtables.h"
10 #include "AnchorTables.h"
11 #include "GlyphIterator.h"
12 #include "OpenTypeUtilities.h"
13 #include "LESwaps.h"
14
15 U_NAMESPACE_BEGIN
16
17 le_uint32 CursiveAttachmentSubtable::process(const LEReferenceTo<CursiveAttachmentSubtable> &base, GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode &success) const
18 {
19 LEGlyphID glyphID = glyphIterator->getCurrGlyphID();
20 le_int32 coverageIndex = getGlyphCoverage(base, glyphID, success);
21 le_uint16 eeCount = SWAPW(entryExitCount);
22
23 if (coverageIndex < 0 || coverageIndex >= eeCount) {
24 glyphIterator->setCursiveGlyph();
25 return 0;
26 }
27
28 LEPoint entryAnchor, exitAnchor;
29 Offset entryOffset = SWAPW(entryExitRecords[coverageIndex].entryAnchor);
30 Offset exitOffset = SWAPW(entryExitRecords[coverageIndex].exitAnchor);
31
32 if (entryOffset != 0) {
33 const AnchorTable *entryAnchorTable = (const AnchorTable *) ((char *) this + entryOffset);
34
35 entryAnchorTable->getAnchor(glyphID, fontInstance, entryAnchor);
36 glyphIterator->setCursiveEntryPoint(entryAnchor);
37 } else {
38 //glyphIterator->clearCursiveEntryPoint();
39 }
40
41 if (exitOffset != 0) {
42 const AnchorTable *exitAnchorTable = (const AnchorTable *) ((char *) this + exitOffset);
43
44 exitAnchorTable->getAnchor(glyphID, fontInstance, exitAnchor);
45 glyphIterator->setCursiveExitPoint(exitAnchor);
46 } else {
47 //glyphIterator->clearCursiveExitPoint();
48 }
49
50 return 1;
51 }
52
53 U_NAMESPACE_END