1/*
2 *
3 * (C) Copyright IBM Corp.  and others 1998-2013 - All Rights Reserved
4 *
5 */
6
7#include "LETypes.h"
8#include "LayoutEngine.h"
9#include "GXLayoutEngine2.h"
10#include "LEGlyphStorage.h"
11#include "MorphTables.h"
12
13U_NAMESPACE_BEGIN
14
15UOBJECT_DEFINE_RTTI_IMPLEMENTATION(GXLayoutEngine2)
16
17GXLayoutEngine2::GXLayoutEngine2(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, const LEReferenceTo<MorphTableHeader2> &morphTable, le_int32 typoFlags, LEErrorCode &success)
18  : LayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, success), fMorphTable(morphTable)
19{
20  // nothing else to do?
21}
22
23GXLayoutEngine2::~GXLayoutEngine2()
24{
25    reset();
26}
27
28// apply 'morx' table
29le_int32 GXLayoutEngine2::computeGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft, LEGlyphStorage &glyphStorage, LEErrorCode &success)
30{
31    if (LE_FAILURE(success)) {
32        return 0;
33    }
34
35    if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) {
36        success = LE_ILLEGAL_ARGUMENT_ERROR;
37        return 0;
38    }
39
40    mapCharsToGlyphs(chars, offset, count, rightToLeft, rightToLeft, glyphStorage, success);
41
42    if (LE_FAILURE(success)) {
43        return 0;
44    }
45
46    fMorphTable->process(fMorphTable, glyphStorage, fTypoFlags, success);
47    return count;
48}
49
50// apply positional tables
51void GXLayoutEngine2::adjustGlyphPositions(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool /*reverse*/,
52                                          LEGlyphStorage &/*glyphStorage*/, LEErrorCode &success)
53{
54    if (LE_FAILURE(success)) {
55        return;
56    }
57
58    if (chars == NULL || offset < 0 || count < 0) {
59        success = LE_ILLEGAL_ARGUMENT_ERROR;
60        return;
61    }
62
63    // FIXME: no positional processing yet...
64}
65
66U_NAMESPACE_END
67