1/*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.  Oracle designates this
7 * particular file as subject to the "Classpath" exception as provided
8 * by Oracle in the LICENSE file that accompanied this code.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26/*
27 *
28 * (C) Copyright IBM Corp.  and others 1998-2013 - All Rights Reserved
29 *
30 */
31
32#include "LETypes.h"
33#include "LayoutEngine.h"
34#include "GXLayoutEngine2.h"
35#include "LEGlyphStorage.h"
36#include "MorphTables.h"
37
38U_NAMESPACE_BEGIN
39
40UOBJECT_DEFINE_RTTI_IMPLEMENTATION(GXLayoutEngine2)
41
42GXLayoutEngine2::GXLayoutEngine2(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 languageCode, const LEReferenceTo<MorphTableHeader2> &morphTable, le_int32 typoFlags, LEErrorCode &success)
43  : LayoutEngine(fontInstance, scriptCode, languageCode, typoFlags, success), fMorphTable(morphTable)
44{
45  // nothing else to do?
46}
47
48GXLayoutEngine2::~GXLayoutEngine2()
49{
50    reset();
51}
52
53// apply 'morx' table
54le_int32 GXLayoutEngine2::computeGlyphs(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft, LEGlyphStorage &glyphStorage, LEErrorCode &success)
55{
56    if (LE_FAILURE(success)) {
57        return 0;
58    }
59
60    if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) {
61        success = LE_ILLEGAL_ARGUMENT_ERROR;
62        return 0;
63    }
64
65    mapCharsToGlyphs(chars, offset, count, rightToLeft, rightToLeft, glyphStorage, success);
66
67    if (LE_FAILURE(success)) {
68        return 0;
69    }
70
71    fMorphTable->process(fMorphTable, glyphStorage, fTypoFlags, success);
72    return glyphStorage.getGlyphCount();
73}
74
75// apply positional tables
76void GXLayoutEngine2::adjustGlyphPositions(const LEUnicode chars[], le_int32 offset, le_int32 count, le_bool /*reverse*/,
77                                          LEGlyphStorage &/*glyphStorage*/, LEErrorCode &success)
78{
79    if (LE_FAILURE(success)) {
80        return;
81    }
82
83    if (chars == NULL || offset < 0 || count < 0) {
84        success = LE_ILLEGAL_ARGUMENT_ERROR;
85        return;
86    }
87
88    // FIXME: no positional processing yet...
89}
90
91U_NAMESPACE_END
92