1/*
2 *
3 * (C) Copyright IBM Corp. 1998-2013 - All Rights Reserved
4 *
5 */
6
7#include "LETypes.h"
8#include "MorphTables.h"
9#include "SubtableProcessor.h"
10#include "NonContextualGlyphSubst.h"
11#include "NonContextualGlyphSubstProc.h"
12#include "SegmentArrayProcessor.h"
13#include "LEGlyphStorage.h"
14#include "LESwaps.h"
15
16U_NAMESPACE_BEGIN
17
18UOBJECT_DEFINE_RTTI_IMPLEMENTATION(SegmentArrayProcessor)
19
20SegmentArrayProcessor::SegmentArrayProcessor()
21{
22}
23
24SegmentArrayProcessor::SegmentArrayProcessor(const LEReferenceTo<MorphSubtableHeader> &morphSubtableHeader, LEErrorCode &success)
25  : NonContextualGlyphSubstitutionProcessor(morphSubtableHeader, success)
26{
27  LEReferenceTo<NonContextualGlyphSubstitutionHeader> header(morphSubtableHeader, success);
28  segmentArrayLookupTable = LEReferenceTo<SegmentArrayLookupTable>(morphSubtableHeader, success, (const SegmentArrayLookupTable*)&header->table);
29}
30
31SegmentArrayProcessor::~SegmentArrayProcessor()
32{
33}
34
35void SegmentArrayProcessor::process(LEGlyphStorage &glyphStorage, LEErrorCode &success)
36{
37    const LookupSegment *segments = segmentArrayLookupTable->segments;
38    le_int32 glyphCount = glyphStorage.getGlyphCount();
39    le_int32 glyph;
40
41    for (glyph = 0; glyph < glyphCount; glyph += 1) {
42        LEGlyphID thisGlyph = glyphStorage[glyph];
43        const LookupSegment *lookupSegment = segmentArrayLookupTable->lookupSegment(segmentArrayLookupTable, segments, thisGlyph, success);
44
45        if (lookupSegment != NULL)  {
46            TTGlyphID firstGlyph = SWAPW(lookupSegment->firstGlyph);
47            le_int16  offset = SWAPW(lookupSegment->value);
48
49            if (offset != 0) {
50              LEReferenceToArrayOf<TTGlyphID> glyphArray(subtableHeader, success, offset, LE_UNBOUNDED_ARRAY);
51              TTGlyphID   newGlyph   = SWAPW(glyphArray(LE_GET_GLYPH(thisGlyph) - firstGlyph, success));
52              glyphStorage[glyph] = LE_SET_GLYPH(thisGlyph, newGlyph);
53            }
54        }
55    }
56}
57
58U_NAMESPACE_END
59